| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 423242200 | Utilizing reactant having organic portion to remove or modify sulfur or sulfur containing component | 16 |
| 20080279742 | Method and Device For Desulfating a NOx Storage Catalyst - The desulfation of a NOx storage catalytic converter takes place in two phases. In a first phase, the NOx storage catalytic converter is alternately exposed to rich and lean exhaust gas. In a subsequent second phase, the NOx storage catalytic converter is operated using rich exhaust gas. This method permits the quantity of hydrogen sulfide that occurs during the desulfation process to be minimized and achieves at the same time an efficient removal of sulfate from the deep-seated layers of the NOx storage catalytic converter. | 11-13-2008 |
| 20090148372 | COMPLEXATION AND REMOVAL OF HEAVY METALS FROM FLUE GAS DESULFURIZATION SYSTEMS - A method for the reduction of the emission of mercury into the environment from the burning of fossil fuels with the use of polydithiocarbamic compounds. The polydithiocarbamic compounds are used for the capture of mercury from the resulting flue gases using a flue gas desulfrization systems or scrubbers. The method uses polydithiocarbamic compounds in conjunction with a scrubber to capture mercury and reduce its emission and/or re-emission with stack gases. The method is a unique process of reducing the toxic levels of mercury, which allows for the use of coal as a clean and environmentally friendlier fuel source | 06-11-2009 |
| 20100028232 | METHOD AND COMPOSITION FOR REMOVAL OF MERCAPTANS FROM GAS STREAMS - A composition for removing mercaptan from a gas stream containing at least one acid gas in addition to a mercaptan, the composition comprising a physical and/or chemical solvent for H | 02-04-2010 |
| 20100104492 | CARBON OXIDE AND/OR SULFUR OXIDE CAPTURE IN A LIQUID ENVIRONMENT - The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants) and, in particular to a new and useful method and apparatus designed to remove and/or capture carbon oxides (e.g., CO | 04-29-2010 |
| 20100196240 | PROCESS AND DEVICE FOR DESULFURIZATION OF A GAS, COMPRISING A STAGE FOR ELIMINATION OF SULFUR BY COOLING A GAS STREAM - The invention has as its object a process for the treatment of a gas that contains hydrogen sulfide and sulfurous anhydride, in which:
| 08-05-2010 |
| 20120107209 | REGENERATIVE RECOVERY OF SULFUR DIOXIDE FROM EFFLUENT GASES - This invention relates to processes for selective removal of contaminants from effluent gases. A sulfur dioxide absorption/desorption process for selective removal and recovery of sulfur dioxide from effluent gases utilizes a buffered aqueous absorption solution comprising weak inorganic or organic acids or salts thereof, to selectively absorb sulfur dioxide from the effluent gas. Absorbed sulfur dioxide is subsequently stripped to regenerate the absorption solution and produce a sulfur dioxide-enriched gas. A process for simultaneous removal of sulfur dioxide and nitrogen oxides (NO | 05-03-2012 |
| 20130272943 | Agglomeration-Resistant Desulfurizing Product - Disclosed herein is an agglomeration-resistant desulfurizing product for removing contaminants from a fluid stream. The agglomeration-resistant desulfurizing product comprising a metal oxide composition for reacting with contaminants and a polymeric crystallization inhibitor for reducing the agglomeration of the desulfurizing product resulting from using the desulfurizing product. A method to produce the agglomeration-resistant desulfurizing product and a method to treat a fluid stream is also disclosed. | 10-17-2013 |
| 20140363360 | Systems and Methods for Removal of Organic Sulfides and Hydrogen Sulfide Contaminants from Mixed Gas Streams - A method of removing gaseous organic sulfide contaminants from gaseous mixtures is provided where the method includes dissolving the organic sulfide contaminants in a solution of an acid-based catalyst to permit cleavage of the sulfur atom from the organic sulfide molecule, such that the cleaved sulfur atom can be further reduced electrochemically to elemental sulfur or alkali metal polysulfides. | 12-11-2014 |
| 423242300 | Organic acid | 1 |
| 20190143262 | USE OF MORPHOLINE-BASED HINDERED AMINE COMPOUNDS FOR SELECTIVE REMOVAL OF HYDROGEN SULFIDE | 05-16-2019 |
| 423242400 | Alcohol, arylhydroxide, or polyol | 3 |
| 20090047201 | Process for removing mercaptans from a gas stream comprising natural gas or an inert gas - The invention provides a process for removing mercaptans from a gas stream comprising natural gas or inert gas and mercaptans, the process comprising the steps of: (a) contacting a first gas stream comprising natural gas or inert gas and mercaptans with a hydrodesulphurisation catalyst in the presence of hydrogen in a hydrodesulphurisation unit to obtain a second gas stream comprising natural gas or inert gas, which is depleted of mercaptans and enriched in H | 02-19-2009 |
| 20110104030 | COMPOSITION AND METHOD FOR REMOVAL OF CARBONYL SULFIDE FROM ACID GAS CONTAINING SAME - Novel solvent composition for selective removal of COS from a gas stream containing same, said composition comprising
| 05-05-2011 |
| 20140369916 | PROCESS FOR CONTROLLING THE EMISSION OF FLUE GASES - Provided is a process for controlling heavy metal (e.g., mercury) emission in S0 | 12-18-2014 |
| 423242600 | Heterocyclic | 2 |
| 20130039829 | ACID GAS RECOVERY UTILIZING ORGANIC ACID SALTED DIAMINE - A process for the capture of sulfur dioxide from a gaseous stream utilizing a regenerable diamine absorbent comprising a diamine and a weak organic acid. | 02-14-2013 |
| 20150314234 | PROCESS FOR CONTROLLING THE EMISSION OF FLUE GASES - The invention is a process for absorbing sulfur dioxide from a gaseous stream with the aid of an ionic liquid, followed by the release of sulfur dioxide from the ionic liquid on addition of a polar solvent and the regeneration of the ionic liquid. | 11-05-2015 |
| 423242700 | Amine | 2 |
| 20090155155 | Cupola Flue Gas Treatment - An additive and method of use for treating flue gas of a coke-fired cupola following removal of the blast air during shutdown to adjust the charge and reduce acid buildup in the condensate and corrosion in downstream equipment by injecting into the flue gas a finely divided spray comprising an additive containing a volatile amine mixed with an antistatic agent that creates a positive static charge in the additive, and elevates the pH of the condensate by reducing the formation of sulfuric acid from entrained sulfur-containing compounds. | 06-18-2009 |
| 20130259789 | REMOVING SULPHUR OXIDES FROM A FLUID STREAM - A process for removing sulphur oxides from a fluid stream, such as flue gas, that comprises a) providing a non-aqueous absorption liquid containing at least one hydrophobic amine, the non-aqueous absorption liquid being incompletely miscible with water: b) treating the fluid stream in an absorption zone with the non-aqueous absorption liquid to transfer at least part of the sulphur oxides into the non-aqueous absorption liquid and to form a sulphur oxide-hydrophobic amine-complex: c) causing the non-aqueous absorption liquid to be in liquid-liquid contact with an aqueous liquid whereby at least part of the sulphur oxide-hydrophobic amine-complex is hydrolyzed to release the hydrophobic amine and sulphurous hydrolysis products, and at least part of the sulphurous hydrolysis products is transferred into the aqueous liquid; d) separating the aqueous liquid from the non-aqueous absorption liquid. The process mitigates absorbent degradation problems caused by sulphur dioxide and oxygen in flue gas. | 10-03-2013 |
