| Patent application number | Description | Published |
|---|
| 20080233027 | Processes for Separating Chlorine from Chlorine-Containing Gas Streams - Processes comprising: providing a gas stream comprising chlorine and at least one secondary component selected from the group consisting of carbon dioxide, nitrogen and oxygen; pressurizing the gas stream in a first stage to an elevated or enhanced pressure, preferably at least about 10 bar; cooling the pressurized gas stream in a second stage comprising a condensation zone and a gas/liquid contact zone disposed below the condensation zone, such that at least a portion of the chlorine is condensed and contacted countercurrently in the gas/liquid contact zone with the pressurized gas stream entering the second stage to form a condensate; and separating the condensate in a third stage comprising a rectifying column to provide a chlorine-rich sump stream and a low-chlorine head stream. | 09-25-2008 |
| 20080250924 | REGENERATIVE ADSORPTION PROCESSES FOR REMOVING ORGANIC COMPONENTS FROM GAS STREAMS - Processes are described comprising: providing a crude gas stream having a temperature not exceeding 40° C., the crude gas stream comprising at least one organic impurity; condensing at least a portion of the at least one organic impurity from the crude gas stream at a temperature not exceeding 0° C. to form a prepurified gas stream; and subjecting (at least a portion, preferably substantially all, and more preferably the entirety, of) the prepurified gas stream to adsorption on a first adsorption medium to provide a purified gas stream; wherein the first adsorption medium is subjected to a regeneration comprising: (i) providing a circulating inert gas stream having a temperature of at least 100° C.; (ii) passing the circulating inert gas stream over the first adsorption medium to form an organic impurity-loaded inert gas stream; (iii) cooling the loaded inert gas stream to a temperature not exceeding 40° C.; (iv) condensing at least a portion of the organic impurity from the cooled, loaded inert gas stream to provide a prepurified circulating inert gas stream; subjecting (at least a portion, preferably substantially all, and more preferably the entirety, of) the prepurified circulating inert gas stream to adsorption on a second adsorption medium to provide a purified circulating inert gas stream; and recycling the purified circulating inert gas stream to the circulating inert gas stream. | 10-16-2008 |
| 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 |
| 20080264253 | PROCESSES FOR REMOVING ORGANIC COMPONENTS FROM GASES CONTAINING HYDROGEN CHLORIDE - Processes comprising: providing a crude gas stream having a temperature not exceeding 40° C., the crude gas stream comprising hydrogen chloride and at least one organic impurity; condensing at least a portion of the at least one organic impurity from the crude gas stream at a temperature not exceeding 0° C. to form a prepurified gas stream and a condensate comprising condensed organic impurity; subjecting at least a portion of the prepurified gas stream to adsorption on an adsorption medium to provide a purified gas stream; and separating the condensate into at least a head gas stream comprising residual hydrogen chloride and a sump stream comprising at least a portion of the condensed organic impurity. | 10-30-2008 |
| 20080264255 | PROCESSES FOR REMOVING SOx AND SULFURIC ACID AEROSOLS FROM CHLORINE-CONTAINING PROCESS GASES - Processes comprising: providing a gas comprising chlorine and at least one sulfur-containing component; and countercurrently contacting the gas with circulating chlorine-containing water in a column such that the at least one sulfur-containing component is oxidized with chlorine in the chlorine-containing water to form sulfate and chloride and a portion of the chlorine from the gas is absorbed by the water to an equilibrium. | 10-30-2008 |
| 20080267846 | PROCESSES FOR THE PURIFICATION AND OXIDATION OF A HYDROGEN CHLORIDE-CONTAINING GAS WHICH ALSO CONTAINS SULFUR COMPOUND(S) - Processes comprising: providing a crude gas comprising hydrogen chloride and at least one sulfur compound; and passing the crude gas across a sacrificial material such that at least a portion of the at least one sulfur compound is oxidized and precipitated as sulfate onto the sacrificial material to provide a hydrogen chloride product gas. | 10-30-2008 |
| 20090020478 | PROCESSES FOR THE REGENERATION OF AN ANION EXCHANGER LOADED WITH HEXACHLOROSTANNATE - Processes comprising: providing an anion exchanger at least partially loaded with hexachlorostannate; and contacting the at least partially loaded anion exchanger with a 1 to 10 wt. % hydrochloric acid solution to regenerate the anion exchanger. | 01-22-2009 |
| 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 |
| 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 |
