| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 423222000 | Reacting mixture with sulfur dioxide, sulfite, or bisulfite | 12 |
| 20080213146 | TECHNICAL AND ECONOMIC OPTIMIZATION OF COMBUSTION, NITROGEN OXIDES, SULFUR DIOXIDE, MERCURY, CARBON DIOXIDE, COAL ASH AND SLAG AND COAL SLURRY USE IN COAL FIRED FURNACES/BOILERS - Improvements in methods by which new or used coal fired boilers whether designed for coal or oil or natural gas firing can substantially improve their technical operation and reduce their capital and operating costs by implementing process steps that (a) minimize the adverse impacts of coal ash and slag on boiler surfaces and particulate emissions, which will improve coal combustion efficiency and facilitate the use of oil or gas designed boilers for coal firing, (b) drastically reduce the loss of water used to transport coal in slurry form to power plants, (c) minimize the combined total nitrogen oxides (NO | 09-04-2008 |
| 20080213147 | Process for treating a gas stream - Processes for selectively removing sulfur-containing compounds from a gas are described herein. The processes generally include contacting a first gas including carbon dioxide and hydrogen sulfide with a scrub solution including ammonium bisulfite and ammonium sulfite in a first contact zone to produce a first contact zone effluent liquid including ammonium thiosulfate and a first contact zone overhead gas in which the concentration of hydrogen sulfide is substantially reduced. | 09-04-2008 |
| 20100310439 | PROCESS FOR REMOVAL OF HYDROGEN SULPHIDE AND CARBON DIOXIDE FROM AN ACID GAS STREAM - A process for removal of H | 12-09-2010 |
| 20110274604 | PROCESS FOR THE SELECTIVE OXIDATION OF HYDROGEN SULPHIDE - The present invention provides a process for the selective oxidation of hydrogen sulphide contained in a hydrogen sulphide-containing hydrocarbon feed gas to elemental sulphur. The hydrogen sulphide-containing hydrocarbon feed gas and a sulphur dioxide-containing gas are supplied to a reaction zone containing a TiO | 11-10-2011 |
| 20120027655 | Method and Apparatus for Adjustably Treating a Sour Gas - A feed gas comprising CO | 02-02-2012 |
| 20120027656 | Method and Apparatus for Treating a Sour Gas - A feed gas comprising CO | 02-02-2012 |
| 20120177552 | Process for Production of Hydrogen and Carbon Dioxide Capture - A process for removing CO | 07-12-2012 |
| 20130183217 | PROCESS FOR SELECTIVE OXIDATION OF HYDROGEN SULPHIDE - The present invention provides a process for the selective oxidation of hydrogen sulphide in a hydrogen sulphide-containing hydrocarbon and/or hydrogen feed gas to elemental sulphur in a reaction zone containing a Claus catalyst, comprising the steps of: i) reacting in the reaction zone the hydrogen sulphide in the hydrogen sulphide-containing hydrocarbon and/or hydrogen feed gas with sulphur dioxide at a pressure in the range of from 4 to 200 bar (absolute) and a temperature in the range of from 120 and 160° C., such that the elemental sulphur formed is essentially in liquid form; ii) contacting the catalyst with a reducing atmosphere at elevated temperatures. | 07-18-2013 |
| 20130330260 | ALUMINA-BASED SULFUR RECOVERY CATALYST AND PREPARATION METHOD FOR THE SAME - Provided is an alumina-based sulfur recovery catalyst as well as its preparation method, characterized in that the catalyst has a specific surface area of at least about 350 m | 12-12-2013 |
| 20140086812 | Sulfur Recovery Process - A process for removing sulfur compounds, particularly hydrogen sulfide, from a waste gas wherein sulfur dioxide is introduced into the process gas at multiple process locations. Quantities of sulfur dioxide are introduced into the process gas stream at one or more locations preceding catalytic reaction. The process of the present invention may be practiced for Claus processes involving initial thermal reactions, and may be practiced without necessity of preliminary thermal reaction. In an embodiment of the invention, one of the injection locations of sulfur dioxide is the thermal reactor. | 03-27-2014 |
| 20140377155 | PROCESS FOR IN-SITU PRODUCTION OF LOW DISSOLVED HYDROGEN SULFIDE, DEGASSED, SULFUR FROM CLAUS SULFUR RECOVERY - A process of producing degassed liquid sulfur within a vertical sulfur condenser may include providing a plurality of condenser tubes within an external casing; submerging exit ends of the plurality of condenser tubes within a liquid reservoir resulting in submerged exit ends of the plurality of condenser tubes; passing the Claus process gas into an inlet end of the plurality of condenser tubes; condensing the Claus process gas within the condenser tubes to produce condensed Claus process gas within the plurality of condenser tubes; and collecting the condensed Claus process gas in the liquid reservoir upon exiting of the condensed Claus process gas at an exit end of the plurality of condenser tubes. The process may further include converting hydrogen sulfide by the Claus reaction 2H | 12-25-2014 |
| 20150362188 | SULPHUR-ASSISTED CARBON CAPTURE AND STORAGE (CCS) PROCESSES AND SYSTEMS - A system for carbon capture includes an oxy-fuel combustor for combusting a hydrocarbon with pure oxygen to produce heat energy and carbon dioxide, a COS converter for converting the carbon dioxide to COS, a transport means for transporting the COS, a sulphur recovery unit for recovering sulphur from the COS and an adjunct sulphur-burning power plant for combusting the sulphur to generate energy for powering one or more carbon capture and storage processes. | 12-17-2015 |
