Patent application number | Description | Published |
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 |
20080293836 | Method for the Recovery of Ruthenium From Used Ruthenium Oxide-Containing Catalysts - The invention relates to a process for recovering ruthenium from a used ruthenium-comprising catalyst which comprises ruthenium as ruthenium oxide on a support material which is sparingly soluble in mineral acid, which comprises the steps:
| 11-27-2008 |
20080295688 | Process for Extracting (Chlorinated) Hydrocarbon-Free Hydrogen Chloride and Phosgene-Free (Chlorinated) Hydrocarbons from a Hydrogen Chloride Stream Containing (Chlorinated) Hydrocarbons and Phosgene - Process for recovering (chloro)hydrocarbon-free hydrogen chloride and phosgene-free (chloro)hydrocarbons from a hydrogen chloride stream comprising (chloro)hydrocarbons and phosgene, which comprises
| 12-04-2008 |
20090112017 | METHOD FOR PRODUCING POLYISOCYANATES - The invention relates to a process for preparing polyisocyanates by reacting primary amines with phosgene in the presence of a solvent, wherein ionic liquids are used as solvents. | 04-30-2009 |
20090112018 | METHOD FOR PRODUCING POLYISOCYANATES - The invention provides a process for preparing isocyanates by reacting the corresponding amines with phosgene in the presence of solvents, wherein compounds which form salt melts with hydrogen chloride are used as solvents. | 04-30-2009 |
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 |
20090304572 | METHOD FOR THE PRODUCTION OF CHLORINE - Process for preparing chlorine from hydrogen chloride, which comprises the steps:
| 12-10-2009 |
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 |
20110021836 | METHOD FOR TREATING RESIDUES FROM THE PRODUCTION OF ISOCYANATES - The invention relates to a process for the work-up of residues from the production of isocyanates, which comprises the steps:
| 01-27-2011 |
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 |
20110286898 | PROCESS FOR RECOVERING RUTHENIUM FROM USED RUTHENIUM OXIDE-COMPRISING CATALYSTS - The invention relates to a process for recovering ruthenium from a used ruthenium-comprising catalyst which comprises ruthenium as ruthenium oxide on a support material which is not readily soluble in mineral acid, which comprises the steps: | 11-24-2011 |
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 |
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 |
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 |
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 |