Class / Patent application number | Description | Number of patent applications / Date published |
423500000 | Elemental halogen | 78 |
20080199391 | Method for circuits inspection and the method of the same - A method for circuit inspection comprises steps of providing a substrate having a conductive line; and forming a metal layer on at least the conductive layer to increase a contrast between the conductive layer and adjacent area for the circuit inspection. The method further comprising removing the metal layer. The metal layer is removed by a mixture of nitric acid, hydrogen peroxide and fluoride boric acid. The metal includes Silver, Nickel or Tin. The deposit metal can be removed by inter diffusion and form intermetallic compounds (for example Cu | 08-21-2008 |
20090060828 | Fluorine Extraction Process For Fluoro-Refractory Coatings And Articles Manufactured According To Said Process - A process for extracting fluorine from a fluoro-refractory coating includes the steps of providing an article having a fluoro-refractory coating; treating hydrothermally the fluoro-refractory coating at a temperature and for a period time sufficient to liberate a quantity of fluoride from the fluoro-refractory coating; and drying a hydrothermally treated article. | 03-05-2009 |
20100074836 | IODINE RECOVERY SYSTEMS AND METHODS - Systems and methods for the recovery of iodine are described. In particular, recovery systems and methods produce an iodine complex from an aqueous brine containing iodide. A head tank for maintains a supply of the brine, a pH controller acidifies brine received from the head tank and an oxidizer converts iodide in the acidified brine to elemental iodine. At least one activated carbon contactor module is removably inserted into a stream of the oxidized brine provided by the oxidizer and binds the molecular iodine to form the iodine complex. A container may enclose the head tank, the pH controller and the oxidizer in order to facilitate transportation of the system and performance of the methods and processes in proximity to a brine source. The brine may be employed or associated with oilfield operations. | 03-25-2010 |
20100290980 | FLUORINE EXTRACTION SYSTEMS AND ASSOCIATED PROCESSES - Fluorine extraction systems and associated processes are described herein. In one embodiment, a fluorine extraction process can include loading a mixture containing a uranium fluoride (U | 11-18-2010 |
20110110845 | IN-LINE MIXING APPARATUS FOR IODINE EXTRACTION - An in-line mixing apparatus is especially useful for iodine extraction from brine. Three fluids (brine, an oxidant such as sodium hypochlorite, and an acid such as HCl) are mixed in the apparatus. The apparatus includes an inner tube and an outer tube. Openings are present in the sidewall of the inner tube to connect the interior volume of the inner tube with the annular volume between the inner tube and the outer tube. Fluid is passed into the inner tube and flows through the openings into the annular volume, causing immediate and vigorous mixing and chemical reaction to obtain elemental iodine. | 05-12-2011 |
20110268648 | PROCESS AND SYSTEM FOR PRODUCTION OF DICHLORINE - The present disclosure provides a process and a system for producing dichlorine (Cl | 11-03-2011 |
20130156681 | Processes and Systems for Oxidizing Aqueous Metal Bromide Salts - Processes and systems that include use of a packed wet oxidation reactor for oxidizing aqueous metal bromide salts in a bromine-based process for converting lower molecular weight alkanes to higher molecular weight hydrocarbons. A stream comprising a dissolved metal bromide salt may be oxidized in a wet oxidation reactor comprising a packed section to produce at least a partially oxidized liquid stream comprising oxidized products of the metal bromide salt and a gaseous bromine stream comprising elemental bromine. | 06-20-2013 |
20150321915 | PROCESS AND SYSTEM FOR PRODUCTION OF DICHLORINE - The present disclosure provides a process and a system for producing dichlorine (Cl | 11-12-2015 |
20160102382 | PROCESS FOR THE REMOVAL OF METAL OR IMPURITIES FROM ELECTRIC ARC FURNACE DUST - A method for preparing Electric Arc Furnace dust (EAFD) for metal recovery, comprising: a) mixing the EAFD comprising zinc oxide or lead oxide, or a mixture of both, with a liquid and a binder to produce an EAFD mixture; b) producing a shaped EAFD pellet; and c) drying the shaped EAFD pellet is disclosed. A method for recovering zinc from Electric Arc Furnace dust (EAFD), comprising: a) heating the EAFD comprising at least one metal comprising zinc in an inert gas atmosphere at a temperature ranging from 700° C. to 1100° C.; and b) evaporating the at least one metal comprising zinc from the EAFD and collecting the at least one metal is also disclosed. A method for recovering an impurity from Electric Arc Furnace dust (EAFD), comprising: a) heating the EAFD comprising an impurity in an inert gas atmosphere at a temperature ranging from 700° C. to 1100° C.; and b) evaporating the impurity from the EAFD and collecting the impurity is also disclosed. A method for recovering iron oxide from Electric Arc Furnace dust (EAFD), comprising: a) heating the EAFD comprising iron oxide and at least one metal in an inert gas atmosphere at a temperature ranging from 700° C. to 1100° C.; and b) separating the iron oxide by evaporating the at least one metal from the EAFD and leaving the iron oxide as a residue is also disclosed. | 04-14-2016 |
20180022606 | RECOVERING BROMINE FROM SOLID WASTE CONTAINING BROMINE COMPOUNDS, AND APPLICATIONS THEREOF | 01-25-2018 |
423501000 | Ion exchanging or liquid-liquid extracting | 4 |
20100119438 | IODINE RECOVERY SYSTEM - Methods for recovering iodine from an aqueous solution containing sodium chloride and iodide are disclosed. In particular, sodium hypochlorite is generated from the aqueous solution itself, and the sodium hypochlorite is used to oxidize the iodide into iodine. The iodine is then recovered from the aqueous solution. | 05-13-2010 |
20100196254 | METHOD FOR THE DIRECT ELUTION OF REACTIVE 18F FLUORIDE FROM AN ANION EXCHANGE RESIN IN AN ORGANIC MEDIUM SUITABLE FOR RADIOLABELLING WITHOUT ANY EVAPORATION STEP BY THE USE OF STRONG ORGANIC BASES - A method to extract out of an aqueous solution, concentrate and/or reformulate [18F] fluorides without any evaporation step wherein the eluting solution is a organic solution having a water content <3%. The solution contains at least: an organic solvent suitable for the subsequent radiolabelling reaction; a first compound (A) which is a molecule containing at least one acidic hydrogen and a second compound (B) which is an organic base sufficiently strong to be able to tear off the acidic hydrogen of the first compound (A) in an acid-base reaction leading to the formation of an organic salt (S). | 08-05-2010 |
20110110846 | PORTABLE SYSTEM FOR ON-SITE IODINE EXTRACTION FROM AN AQUEOUS SOLUTION - A portable system for extracting iodine from brine on-site is disclosed. The portable system includes a mobile platform containing a treatment unit for oxidizing iodine ions into elemental iodine, an adsorption unit capable of binding iodine, and may also have an electrolytic cell and/or a gas-liquid separator. The treatment unit and the adsorption unit may be located in the same or different portable operating devices. When transported to a field site containing natural gas wells, the natural gas wells provide a fluid stream containing natural gas and brine. The separators can separate the natural gas from the brine, and the brine is then run through the treatment unit and the adsorption unit to bind iodine present in the brine. The brine is then returned to the natural gas well. Upon saturation, the portable operating device is transported to a second location, where iodine is extracted from the adsorption unit. | 05-12-2011 |
20120034152 | PORTABLE SYSTEM FOR ON-SITE IODINE EXTRACTION FROM AN AQUEOUS SOLUTION - A portable system for extracting iodine from brine on-site is disclosed. The portable system includes a mobile platform containing a treatment unit for oxidizing iodine ions into elemental iodine, an adsorption unit capable of binding iodine, and may also have an electrolytic cell and/or a gas-liquid separator. The treatment unit and the adsorption unit may be located in the same or different portable operating devices. When transported to a field site containing natural gas wells, the natural gas wells provide a fluid stream containing natural gas and brine. The separators can separate the natural gas from the brine, and the brine is then run through the treatment unit and the adsorption unit to bind iodine present in the brine. The brine is then returned to the natural gas well. Upon saturation, the portable operating device is transported to a second location, where iodine is extracted from the adsorption unit. | 02-09-2012 |
423502000 | Oxidizing catalytically | 56 |
20080233043 | Method For the Production of Chlorine By Means of Gas Phase Oxidation of Hydrogen Chloride - A process for preparing chlorine by gas-phase oxidation of hydrogen chloride by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst, wherein the process is carried out in a reactor ( | 09-25-2008 |
20080247941 | Mechanically Stable Catalyst Based on Alpha-Alumina - A catalyst for gas-phase reactions which has high mechanical stability and comprises one or more active metals on a support comprising aluminum oxide as support material, wherein the aluminum oxide in the support consists essentially of alpha-aluminum oxide. | 10-09-2008 |
20080260619 | PROCESSES FOR THE OXIDATION OF HYDROGEN CHLORIDE - A process for carrying out an optionally catalyst-assisted hydrogen chloride oxidation process by means of oxygen is described. The process comprises single- or multi-stage cooling of the process gases and separating off of unreacted hydrogen chloride and water of reaction from the process gas, drying of the product gases, separating off of chlorine from the mixture and recycling of the unreacted oxygen into the hydrogen chloride oxidation process, at least some of the heat content of the product gases being used for recovery of heat and at least some of the coldest gas streams being used for cooling in the process. | 10-23-2008 |
20080267857 | RUTHENIUM CATALYSTS HAVING ENHANCED LONG-TERM STABILITY AND ACTIVITY - Oxidation catalysts comprising one or more ruthenium compounds and one or more promoters selected from the group consisting of zirconium halides, alkali metal halides, alkaline earth metal halides and lanthanum compounds, wherein the molar ratio of promoter to ruthenium is in the range of from 1:100 to 1:1; as well as processes for their preparation and use. | 10-30-2008 |
20080299032 | Process For Producing Supported Ruthenium and Process For Producing Chlorine - The present invention provides a process for producing supported ruthenium, which comprises recovering a ruthenium compound from supported ruthenium used as a catalyst in production of chlorine by oxidation of hydrogen chloride with oxygen, and supporting the ruthenium compound on a carrier; and a process for producing chlorine, which comprises producing a supported ruthenium catalyst by the process mentioned above and oxidizing hydrogen chloride with oxygen in the presence of the supported ruthenium. | 12-04-2008 |
20090028780 | METHOD AND DEVICE FOR PRODUCING CHLORINE BY GAS PHASE OXIDATION IN A COOL WALL REACTOR - The present invention relates to a process and an apparatus for preparing chlorine by gas-phase oxidation of hydrogen chloride by means of an oxygen-containing gas stream, wherein the catalyst required for the reaction is applied to the interior wall of one or more externally cooled reaction channels. | 01-29-2009 |
20090068087 | HYDROGEN CHLORIDE OXIDATION REACTION APPARATUS AND HYDROGEN CHLORIDE OXIDATION REACTION METHOD - Provided is a hydrogen chloride oxidation reaction apparatus for producing chlorine by oxidizing hydrogen chloride through a contact gas phase reaction in the presence of a catalyst by using hydrogen chloride and oxygen as major raw materials, wherein the hydrogen chloride oxidation reaction apparatus includes a mixing portion for mixing the raw material gases and a transfer piping portion for transferring the mixed raw material gases from the mixing portion to a reactor for a contact gas phase reaction, and wherein a gas contact surface of the mixing portion and/or a part of a gas contact surface of the transfer piping is made of or covered with tantalum or a tantalum-tungsten alloy, as well as a hydrogen chloride oxidation reaction method using the same. | 03-12-2009 |
20090269270 | PROCESS FOR PREPARING CHLORINE IN A FLUIDIZED-BED REACTOR - A process for preparing chlorine in a fluidized-bed reactor, in which a gaseous reaction mixture comprising hydrogen chloride and oxygen flows from the bottom upward through a heterogeneous particulate catalyst forming a fluidized bed, wherein the fluidized bed is provided with internals which divide the fluidized bed into a plurality of cells arranged horizontally in the fluidized-bed reactor and a plurality of cells arranged vertically in the fluidized-bed reactor, with the cells having cell walls which are permeable to gas and have openings which ensure an exchange number of the heterogeneous, particulate catalyst in the vertical direction in the range from 1 to 100 liters/hour per liter of reactor volume, is proposed. | 10-29-2009 |
20090274612 | PROCESS FOR PRODUCING SUPPORTED RUTHENIUM OXIDE AND PROCESS FOR PRODUCING CHLORINE - The present invention provides a process for producing supported ruthenium oxide comprising a step of supporting a ruthenium compound on a carrier and then calcining it in an oxygen-containing gas atmosphere, wherein the ruthenium compound has a total of each content of sodium, calcium, magnesium, iron, silicon, aluminum, copper and zinc of 500 weight ppm or less based on the amount of ruthenium. | 11-05-2009 |
20090304572 | METHOD FOR THE PRODUCTION OF CHLORINE - Process for preparing chlorine from hydrogen chloride, which comprises the steps:
| 12-10-2009 |
20090304573 | PROCESSES AND APPARATUS FOR THE PRODUCTION OF CHLORINE BY GAS PHASE OXIDATION - The present invention provides a process for producing chlorine by the catalytic gas phase oxidation of hydrogen chloride with oxygen, wherein the reaction is performed on at least two catalyst beds under adiabatic conditions, as well as a reactor system for performing the process. | 12-10-2009 |
20100015034 | PROCESSES FOR OXIDIZING HYDROGEN BROMIDE TO PRODUCE ELEMENTAL BROMINE - Processes are provided for catalytic oxidation of bromide to bromine by use of oxygen at temperatures of at least about 315° C. in the presence of a cerium-containing compound, such as a cerium bromide catalyst, wherein the produced stream comprising Br | 01-21-2010 |
20100061921 | PROCESS FOR THE PRODUCTION OF HYDROGEN - The present invention provides a process for the production of hydrogen from the catalytic partial oxidation of a hydrocarbonaceous feedstock ( | 03-11-2010 |
20100068126 | PROCESS FOR PRODUCING RUTHENIUM OXIDE-SUPPORTED MATERIAL AND PROCESS FOR PRODUCING CHLORINE - There are disclosed a process for producing a ruthenium oxide-supported material, characterized in that a ruthenium compound is supported on a titania carrier in which silica is supported on titania, and the obtained material is then calcined under an atmosphere of an oxidizing gas; and a process for producing chlorine by oxidizing hydrogen chloride with oxygen in the presence of the ruthenium oxide-supported material produced by the above-described process. | 03-18-2010 |
20100086473 | Process for Producing Chlorine from HCL - A process is described for the production of chlorine by a catalysed gas-phase oxidation of hydrogen chloride with an oxygen-containing gas stream. | 04-08-2010 |
20100092373 | Processes for Removing Carbon Monoxide from a Crude HCl Gas, and HCl Oxidation Processes Using Purified HCl Gas Obtained Thereby - The present invention relates to a process for removing gases comprising carbon monoxide from a crude HCl gas which comprises at least carbon monoxide with or without nitrogen, consisting at least of the process steps of:
| 04-15-2010 |
20100098616 | CATALYST AND PROCESS FOR PREPARING CHLORINE BY GAS PHASE OXIDATION - Catalyst compositions comprising a support material and a catalytically active material, wherein the support material comprises magnesium fluoride, and wherein the catalytically active material comprises a ruthenium-containing compound; and processes for preparing chlorine by catalytic gas phase oxidation of hydrogen chloride with oxygen, in which the catalyst comprises magnesium fluoride and at least one ruthenium compound. | 04-22-2010 |
20100183498 | THERMALLY STABLE CATALYST FOR HYDROGEN CHLORIDE GAS PHASE OXIDATION - The present invention relates to a catalyst for oxidation reactions which comprises at least one constituent active in the catalysis of hydrogen chloride oxidation and support therefor, characterized in that the support is based on uranium oxide. The catalyst is notable for a high stability and activity. | 07-22-2010 |
20100183499 | METHOD FOR ACTIVATING CATALYST FOR CHLORINE PRODUCTION - A catalyst having decreased activity is subjected to a contact treatment with a reducing gas containing carbon monoxide and/or hydrogen. Also, the catalyst can be effectively activated by being treated by contacting with an oxidizing gas after having been treated by contacting with the reducing gas. As the catalyst for production of chlorine, a ruthenium catalyst, particularly a catalyst containing ruthenium oxide is suitably activated. | 07-22-2010 |
20100189633 | METHOD FOR PRODUCING CHLORINE BY GAS PHASE OXIDATION - The present invention relates to a process for preparing chlorine by catalytic gas phase oxidation of hydrogen chloride with oxygen, by reacting the process gas mixture in a reactor in at least two separate reaction zones under adiabatic conditions over catalyst beds, and by passing the process gas mixture leaving at least one reaction zone subsequently through a heat exchanger connected downstream of the particular reaction zone. It further relates to a reactor system for preparing chlorine by catalytic gas phase oxidation of hydrogen chloride with oxygen by means of the process according to the invention. | 07-29-2010 |
20100196255 | CATALYST AND PRODUCTION PROCESS THEREOF, AND CHLORINE PRODUCTION USING THE CATALYST - A catalyst has high activity and is suitable for use in producing chlorine by oxidizing hydrogen chloride with oxygen. The catalyst includes copper, an alkali metal and a rare earth and has pores of which pores having a diameter of 5 to 15 nm have a pore volume of 0.4 to 2.0 ml/g. | 08-05-2010 |
20100202959 | CATALYST AND PROCESS FOR PREPARING CHLORINE BY GAS PHASE OXIDATION OF HYDROGEN CHLORIDE - The present invention relates to a catalyst and to a process for preparing chlorine by catalytic oxidation of hydrogen chloride. The catalyst comprises an active component and a support material, said active component comprising at least uranium or a uranium compound. The catalyst is notable for a high stability and activity at a lower cost compared to the noble metals. | 08-12-2010 |
20100260660 | METHOD FOR PRODUCING CHLORINE BY MULTI STEP ADIABATIC GAS PHASE OXIDATION - The present invention relates to a process for preparing chlorine by catalytic gas phase oxidation of hydrogen chloride with oxygen, in which the reaction is carried out over 18 to 60 catalyst beds connected in series under adiabatic conditions, and to a reactor system for performing the process. | 10-14-2010 |
20100266481 | PROCESSES FOR THE OXIDATION OF A GAS CONTAINING HYDROGEN CHLORIDE - Processes for the production of chlorine from a gas containing hydrogen chloride and carbon monoxide, which comprise the catalysed oxidation of the carbon monoxide as well as optionally further oxidizable constituents, with oxygen to form carbon dioxide in an upstream reactor under adiabatic conditions. | 10-21-2010 |
20100296998 | REACTOR FOR PRODUCING CHLORINE AND PROCESS FOR PRODUCING CHLORINE - A rector for producing chlorine according to the present invention is a multi-tubular heat exchanger type reactor for use in producing chlorine by oxidizing hydrogen chloride with oxygen, characterized in that | 11-25-2010 |
20100303710 | PROCESS FOR PRODUCING CHLORINE - Disclosed is a process for producing chlorine by oxidation of hydrogen chloride through a catalytic gas-phase reaction in the presence of a catalyst, wherein hydrogen chloride as a raw material is a by-product of synthesis of isocyanate by reacting phosgene and primary amine and oxidizing the hydrogen chloride through a catalytic gas phase reaction in the presence of a catalyst. The process is characterized by adjusting the sulfur content in carbon monoxide which is a raw material for the phosgene to 2000 vol. ppb or less. | 12-02-2010 |
20110014114 | MECHANICALLY STABLE CATALYST BASED ON ALPHA-ALUMINA - A catalyst for gas-phase reactions which has high mechanical stability and comprises one or more active metals on a support comprising aluminum oxide as support material, wherein the aluminum oxide in the support consists essentially of alpha-aluminum oxide. | 01-20-2011 |
20110150749 | METHOD FOR PRODUCING CHLORINE AND CATALYST - A method for producing chlorine by oxidizing hydrogen chloride with oxygen in the presence of a catalyst, wherein the catalyst satisfies the following conditions (i) and (ii): (i) the BET specific surface area is from 1 to 250 m | 06-23-2011 |
20110158897 | PROCESS FOR PRODUCING CHLORINE - There is disclosed a process for producing chlorine by feeding hydrogen chloride and oxygen into catalyst beds which are formed in the reaction tubes of a fixed-bed multitubular reactor and which contain catalysts for use in oxidation of hydrochloric acid, and this process is characterized in that
| 06-30-2011 |
20110182801 | MULTI-STAGE METHOD FOR THE PRODUCTION OF CHLORINE - The present invention relates to a multistage process for preparing chlorine by catalytic gas phase oxidation of hydrogen chloride with oxygen, in which the conversion is performed over at least two different catalyst beds under adiabatic conditions, and to a reactor system for performing the process. | 07-28-2011 |
20110189079 | PROCESS FOR PRODUCING CHLORINE - Disclosed is a process for producing chlorine, which makes it possible to successfully continue an oxidation reaction, even if sulfur component-containing hydrogen chloride is used. This process comprises a step of feeding sulfur component-containing hydrogen chloride and oxygen into a reaction tube | 08-04-2011 |
20110243833 | METHOD FOR PRODUCING CHLORINE - An object of the present invention is to provide a novel method for producing chlorine with improved efficiency, which can remove impurities other than hydrogen chloride contained in a raw material gas and can recover unreacted hydrogen chloride after an oxidation reaction efficiently. The method of the present invention for producing chlorine includes an oxidation step of oxidizing hydrogen chloride in a raw material gas containing hydrogen chloride and impurities with oxygen, thereby obtaining a gas containing chlorine, and an absorption step of bringing the gas containing chlorine obtained in the oxidation step into contact with water or aqueous hydrochloric acid to form a solution containing hydrogen chloride and water as main components, thereby recovering unreacted hydrogen chloride and simultaneously obtaining a gas containing chlorine and oxygen as main components, wherein the above-mentioned raw material gas contains a gas obtained in at least one step of a first stripping step and a second stripping step, and the above-mentioned raw material gas passes through a step of removing moisture and a step of performing compression after at least one step of the first stripping step and the second stripping step and before being subjected to the oxidation step. | 10-06-2011 |
20110256050 | METHOD FOR PRODUCING CHLORINE - An object of the present invention is to provide a novel method for producing chlorine, by which it is possible to remove impurities contained with hydrogen chloride in a raw material gas and further to recover unreacted hydrogen chloride after an oxidation reaction efficiently in a method for producing chlorine by oxidizing hydrogen chloride. The method of the present invention for producing chlorine includes [1] an oxidation step of oxidizing hydrogen chloride in a raw material gas containing the hydrogen chloride and impurities with a gas containing oxygen, thereby obtaining a gas containing chlorine, water, unreacted hydrogen chloride, and unreacted oxygen; [2] an absorption step of bringing the gas containing chlorine, water, unreacted hydrogen chloride, and unreacted oxygen obtained in the oxidation step into contact with an absorbent liquid including water or aqueous hydrochloric acid or cooling the gas, thereby recovering unreacted hydrogen chloride in the form of a solution containing hydrogen chloride and water as main components and simultaneously obtaining a gas containing chlorine and unreacted oxygen as main components; and [3] a stripping step of distilling the solution obtained in the absorption step, thereby obtaining a gas containing hydrogen chloride as a main component, wherein the gas obtained in the stripping step, which contains hydrogen chloride as a main component and contains 5 to 50% by volume of water, is recovered and mixed with the raw material gas. | 10-20-2011 |
20110268649 | CATALYST COMPRISING RUTHENIUM AND NICKEL FOR THE OXIDATION OF HYDROGEN CHLORIDE - Catalyst for gas-phase reactions which has a high mechanical stability and comprises one or more active metals on a support comprising aluminum oxide as support material, wherein the aluminum oxide component of the support consists essentially of alpha-aluminum oxide. | 11-03-2011 |
20110274613 | PROCESS FOR REGENERATING A CATALYST COMPRISING RUTHENIUM OXIDE FOR THE OXIDATION OF HYDROGEN CHLORIDE - The invention relates to a process for regenerating a hydrogen chloride oxidation catalyst comprising ruthenium oxide on a support material, which comprises the steps
| 11-10-2011 |
20110318259 | PROCESS FOR PREPARING CHLORINE - A process for preparing chlorine by oxidation of hydrogen chloride in the presence of a heterogeneous particulate catalyst by the Deacon process in a fluidized-bed reactor ( | 12-29-2011 |
20120009117 | CHLORINE PRODUCTION CATALYST AND CHLORINE PRODUCTION PROCESS USING THE CATALYST - The invention provides a chlorine production catalyst that shows excellent reaction activity in the oxidation reaction of hydrogen chloride with oxygen into chlorine, is inexpensive and can be supplied stably, and is suited for use in a fluidized-bed reactor. The invention also provides a chlorine production process using the catalyst. The chlorine production catalyst of the invention includes spherical particles containing copper element (A), an alkali metal element (B) and a lanthanoid element (C) and having an average sphericity of not less than 0.80. The lanthanoid element (C) has a bond dissociation energy with oxygen at 298 K of 100 to 185 kcal/mol. The content of the copper element (A) in the catalyst is 0.3 wt % to 4.5 wt %. | 01-12-2012 |
20120027665 | CATALYST COMPRISING RUTHENIUM AND SILVER AND/OR CALCIUM FOR THE OXIDATION OF HYDROGEN CHLORIDE - Catalyst comprising ruthenium on a support for the catalytic oxidation of hydrogen chloride by means of oxygen to form chlorine, wherein the catalyst comprises from 0.01 to 10% by weight of silver and/or calcium as dopant. | 02-02-2012 |
20120045386 | URANIUM CATALYST ON A SUBSTRATE HAVING A SPECIFIC PORE SIZE DISTRIBUTION, METHOD FOR THE PRODUCTION THEREOF AND USE THEREOF - The present invention relates to a novel uranium catalyst on a support of particular pore size distribution, to a process for preparation thereof, and to the use thereof in the course of processes for preparing chlorine from hydrogen chloride. | 02-23-2012 |
20120076719 | METHOD FOR ACTIVATING CATALYST FOR CHLORINE PRODUCTION AND METHOD FOR PRODUCING CHLORINE - A method for activating a catalyst for chlorine production used in a reaction for oxidizing hydrogen chloride with oxygen, including the step of bringing a catalyst for chlorine production having decreased activity into contact with a basic liquid, and a method for producing chlorine by oxidizing hydrogen chloride with oxygen in the presence of a catalyst for chlorine production activated by the above method are provided. The basic liquid used preferably has a pH of 8 or more, and is preferably an aqueous solution in which an inorganic base is dissolved. The catalyst for chlorine production is preferably a catalyst containing ruthenium oxide. | 03-29-2012 |
20120087855 | PROCESS FOR THE OXIDATION OF HYDROGEN CHLORIDE OVER A CATALYST HAVING A LOW SURFACE ROUGHNESS - The invention relates to a process for the catalytic oxidation of hydrogen chloride by means of oxygen to form chlorine in a fluidized-bed process in the presence of a catalyst comprising ruthenium on a particulate support composed of alpha-aluminum oxide having an average particle size of from 10 to 200 μm, wherein the catalyst support has a low surface roughness and can be obtained from a used catalyst which has been used in a fluidized-bed process for at least 500 hours of operation. | 04-12-2012 |
20120093711 | PROCESS FOR PREPARING CHLORINE FROM HCI - Process for preparing chlorine by oxidation of hydrogen chloride by means of oxygen in the presence of a particulate catalyst in a fluidized-bed reactor, where the heat of reaction of the exothermic oxidation of hydrogen chloride is removed by means of water which circulates in the tubes of a shell-and-tube heat exchanger, where (i) the fluidized-bed reactor is heated up to an operating temperature in the range from 350 to 420° C. in a heating-up phase and (ii) hydrogen chloride is reacted with oxygen in an operating phase at the operating temperature, wherein
| 04-19-2012 |
20120128575 | METHOD FOR ACTIVATING CATALYST FOR CHLORINE PRODUCTION - A catalyst having decreased activity is subjected to a contact treatment with a reducing gas containing carbon monoxide and/or hydrogen. Also, the catalyst can be effectively activated by being treated by contacting with an oxidizing gas after having been treated by contacting with the reducing gas. As the catalyst for production of chlorine, a ruthenium catalyst, particularly a catalyst containing ruthenium oxide is suitably activated. | 05-24-2012 |
20120134913 | METHOD FOR PRODUCING CHLORINE BY GAS PHASE OXIDATION OF HYDROGEN CHLORIDE IN A FLUIDIZED-BED REACTOR - A process for preparing chlorine by gas-phase oxidation of hydrogen chloride over a heterogeneous, particulate catalyst in a fluidized-bed reactor to give a product gas mixture which is freed of entrained catalyst particles in cyclones ( | 05-31-2012 |
20120148478 | PROCESS FOR THE PREPARATION OF CHLORINE BY GAS PHASE OXIDATION ON NANOSTRUCTURED SUPPORTED RUTHENIUM CATALYSTS - The present invention relates to a process for the preparation of chlorine by gas phase oxidation using a supported catalyst based on ruthenium, characterised in that the catalyst support has a plurality of pores having a pore diameter>50 nm and carries nanoparticles containing ruthenium and/or ruthenium compounds as catalytically active components. | 06-14-2012 |
20120213692 | DISTILLATION PROCESS FOR SEPARATING CHLORINE FROM GAS STREAMS COMPRISING OXYGEN AND CHLORINE - The invention relates to a process for separating chlorine from a gas stream I comprising oxygen and chlorine, in which the gas stream I is fed into a lower part of a column K | 08-23-2012 |
20120213693 | USE OF LIQUID HYDROGEN CHLORIDE AS REFRIGERANT IN PROCESSES FOR PREPARING CHLORINE - This invention relates to a process for preparing chlorine from HCl and a method of using liquid HCl to cool and optionally liquefy chlorine in the process. The process involves introducing at least one HCl-containing stream and an oxygen-containing stream into an oxidation zone and catalytically oxidizing the HCl to chlorine, contacting the chlorine with aqueous HCl with partial separation of water and HCl to yield a gas stream, drying the gas stream to yield an essentially water-free gas stream, which is compressed and cooled to give an at least partially liquefied stream, and separating the liquefied stream into a gas stream and a liquid stream which is separated into a chlorine stream, such that cooling and partial liquefaction of the gas stream is effected by indirect heat exchange with a liquid HCl stream, resulting in some of the liquid HCl stream vaporizing to form a gaseous HCl stream. | 08-23-2012 |
20130039842 | METHOD FOR PRODUCING CHLORINE USING FIXED BED REACTOR - The present invention is a method of producing chlorine where it is possible to inhibit the degradation of a catalyst, the corrosion of an apparatus material caused by raw material hydrogen chloride and/or generated chlorine, and a runaway reaction by preventing hot spot generation in a catalyst layer, wherein the method includes a reaction of oxidizing hydrogen chloride in a gas containing the hydrogen chloride using a gas containing oxygen by a fixed bed reactor having a reaction region composed of a catalyst layer and the catalyst layer has an effective thermal conductivity of 0.30 W/(Km) or more, based on a catalyst-filled layer, measured at 350° C. in an air atmosphere. | 02-14-2013 |
20130177494 | CATALYST AND METHOD FOR THE PRODUCTION OF CHLORINE BY GAS PHASE OXIDATION - The present invention relates to a catalyst for preparation of chlorine by catalytic gas phase oxidation of hydrogen chloride with oxygen, in which the catalyst comprises at least tin dioxide as a support material and at least one ruthenium-containing compound as a catalytically active material, and comprises, as an additional secondary constituent, a compound of an element or an element selected from the group of: Nb, V, Ta, Cr, Mo, Au, In, Sc, Y and lanthanoids, especially La and Ce. | 07-11-2013 |
20130216470 | CATALYST AND METHOD FOR THE PRODUCTION OF CHLORINE BY GAS PHASE OXIDATION - The present invention relates to a catalyst for preparation of chlorine by catalytic gas phase oxidation of hydrogen chloride with oxygen, in which the catalyst comprises calcined tin dioxide as a support and at least one halogen-containing ruthenium compound, and to the use thereof. | 08-22-2013 |
20140205533 | PROCESS FOR THE PRODUCTION OF CHLORINE USING A CERIUM OXIDE CATALYST IN AN ADIABATIC REACTION CASCADE - A process for the production of chlorine by thermo-catalytic gas phase oxidation of hydrogen chloride and oxygen is described, the process comprising at least (1) a cerium oxide catalyst and (2) an adiabatic reaction cascade, containing at least two adiabatic stages connected in series with intermediate cooling, wherein the molar O | 07-24-2014 |
20140241976 | PROCESS FOR THE PRODUCTION OF CHLORINE USING A CERIUM OXIDE CATALYST IN AN ISOTHERMIC REACTOR - A process for the production of chlorine by thermo-catalytic gas phase oxidation of hydrogen chloride gas with oxygen, in the presence of a catalyst, and separation of the chlorine from the reaction products comprising chlorine, hydrogen chloride, oxygen and water, characterized in that
| 08-28-2014 |
20140248208 | CATALYST AND METHOD FOR PRODUCING CHLORINE BY MEANS OF A GAS-PHASE OXIDATION - A catalyst material for producing chlorine by the catalytic gas-phase oxidation of hydrogen chloride, wherein the catalyst comprises oxide compounds of cerium as active component components and zirconium dioxide as supporting component and the catalyst h as a particularly high space-time yield with respect to the reactor volume | 09-04-2014 |
20140335012 | PROCESS FOR PRODUCING SUPPORTED RUTHENIUM ON SILICA MODIFIED TITANIA AND PROCESS FOR PRODUCING CHLORINE - An object of the invention is to provide a process for producing a supported ruthenium oxide in which silica can be efficiently supported on a titania carrier and a supported ruthenium oxide superior in thermal stability and catalyst lifetime is obtained. Another object of the present invention is to provide a process for stably producing chlorine for a longer time, by using the supported ruthenium oxide obtained by the above-described process. The invention relates to a process for producing a supported ruthenium oxide in which ruthenium oxide and silica are supported on a titania carrier, wherein a titania carrier is brought into contact with an alkoxysilane compound, followed by being dried under a stream of a water vapor-containing gas, then is subjected to a first calcination under an atmosphere of an oxidizing gas, followed by being brought into contact with a ruthenium compound, and then is subjected to a second calcination under an atmosphere of an oxidizing gas. Chlorine is produced by oxidizing hydrogen chloride with oxygen in the presence of the supported ruthenium oxide thus produced, as a catalyst. | 11-13-2014 |
20150037243 | Process of Producing Chlorine Gas by Catalytic Oxidation of Hydrogen Chloride - A process of producing chlorine gas by catalytic oxidation of hydrogen chloride including: incorporating an oxidizing agent such as ozone, hydrogen peroxide solution etc. into a gas stream of hydrogen chloride containing impurities, conducting oxidation pretreatment of the gas stream under the action of ultrasonic wave, such that the impurities contained in the gas stream are oxidized; wherein the oxidizing agent does not generate additional or new impurities in the reaction system, where the gas stream obtained after the oxidation pretreatment is allowed to pass through a separating device wherein the oxidized impurities in the form of liquid and/or the oxidized impurities in the form of solid are removed from the gas stream so as to obtain a purified gas stream of hydrogen chloride, and thereafter the purified gas stream of hydrogen chloride is well mixed with a gas stream containing molecular oxygen, the resultant gas mixture is preheated to a reaction temperature, and then catalytically oxidized to produce chlorine gas, thus by means of oxidation pretreatment and separation, the process can remove efficiently the sulfur-containing impurities, the halogen-containing impurities, hydrocarbon impurities and the like from the gas stream of hydrogen chloride, and does not generate additional impurities. | 02-05-2015 |
20150315021 | METHOD FOR PRODUCING CHLORINE - To provide a method for producing chlorine in which catalytic activity can be retained stably over a long period of time even when hydrogen chloride and oxygen both containing a sulfur component are used, thus satisfactorily enabling continuous oxidation reaction. The method for producing chlorine includes bringing a mixed gas containing hydrogen chloride, oxygen, and a sulfur component into contact with a supported ruthenium oxide including ruthenium oxide and silica supported on a titania carrier to thereby oxidize hydrogen chloride in the mixed gas with oxygen, wherein the supported ruthenium oxide is obtained by performing a contact treatment of the titania carrier with an alkoxysilane compound, drying in a steam-containing gas flow, performing first calcination in an oxidizing gas atmosphere, performing a contact treatment of the sold including silica supported on the titania carrier with a ruthenium compound, and performing second calcination in an oxidizing gas atmosphere. | 11-05-2015 |
423503000 | Sorbing | 3 |
20090041655 | Method for recovering iodine - An object of the present invention is to provide a method for recovering iodine, which can be carried out simply and economically without practicing mixing processing operation of iodine-containing material, an alkali metal compound and a solvent in advance before introducing to a combustion furnace. The object of the present invention can be attained by a method for recovering iodine which comprises feeding an iodine-containing solution containing iodine and/or iodine compound, a basic alkali metal compound solution and/or a basic alkaline earth metal compound solution separately to a roasting furnace, oxidatively decomposing a combustible material by heat treatment, and absorbing iodine and/or iodine salt contained in a component at heat treatment exit with water or an aqueous solution. | 02-12-2009 |
20130243684 | SYSTEMS, METHODS, AND APPARATUS FOR IODINE REMOVAL FROM HIGH VOLUME DILUTE BRINE - This disclosure describes systems, methods, and apparatus for recovery and purification of iodine from strong brine solutions having low concentrations of iodine. This can involve acidifying and oxidizing the strong brine solution to produce a solution of processed brine and elemental iodine. This solution can then be passed through a countercurrent sorber causing the elemental iodine to adsorb onto a solid sorbent such as GAC. The iodine-loaded sorbent is separated and regenerated, for instance via heating, producing regenerated sorbent and iodine vapor. The vapor can be condensed thus leaving solid elemental iodine. | 09-19-2013 |
20140286853 | Processes and Systems for Recovering Bromine Using Bromide Liquids - Processes and systems for recovering bromine. A process may comprise contacting a gas stream comprising bromine with a liquid bromide stream comprising bromide anions to produce at least an off-gas stream that is substantially bromine free and a liquid stream comprising bromine anionic complexes; and heating at least a portion of the liquid stream to produce at least bromine from at least a portion of the bromine anionic complexes. | 09-25-2014 |
423504000 | From mixture containing alkali metal or alkaline earth metal | 2 |
20120070365 | PROCESS AND APPARATUS FOR PREPARING MOLECULAR BROMINE - A process for preparing gaseous elemental bromine and transferring it to a site of its intended use, comprising feeding a bromide (Br—) source, an oxidant and an acid into a reaction vessel to form an acidic aqueous reaction mixture, oxidizing the bromide at a temperature in the range between 59 C and the boiling point of said reaction mixture, thereby forming elemental bromine in a gaseous state, passing a stream of air through the reaction vessel and transferring metered amounts of the resultant mixture of air and bromine vapors to said site of use. The invention also provides an apparatus for carrying out the process. | 03-22-2012 |
20130101499 | METHODS FOR ELECTROCHEMICAL DECHLORINATION OF ANOLYTE BRINE FROM NaCl ELECTROLYSIS - Methods for the reductive post-treatment of NaCl-containing solutions, wherein such methods comprise: providing a NaCl-containing solution obtained from an anode side of an NaCl electrolysis cell, the solution comprising reducible components; and subjecting the solution to cathodic electrochemical reduction. | 04-25-2013 |
423507000 | By reacting hydrogen halide or ammonium halide | 3 |
20100028248 | START-UP METHOD - A start-up method of a process for producing chlorine from hydrogen chloride has a mixed gas producing step (S | 02-04-2010 |
20110223096 | CATALYST FOR OXIDATION REACTIONS IN THE PRESENCE OF HYDROGEN CHLORIDE AND/OR CHLORINE AND METHOD FOR THE PRODUCTION THEREOF, AND THE USE THEREOF - Thermally stable catalyst for heterogeneously catalyzed oxidation in the presence of hydrogen chloride and/or chlorine, comprising nanoparticulate core of a ruthenium compound with surrounding gas- and liquid-pervious shell of zirconium oxide or titanium oxide. | 09-15-2011 |
20120251435 | PROCESS FOR PREPARING ISOCYANATES - A process is proposed for preparing isocyanates by phosgenating the corresponding amines in the gas phase, which comprises
| 10-04-2012 |