Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 7901655 | Process for producing a gas stream depleted of hydrogen sulphide A process for treating a gas stream comprising H2S that includes the step of selectively oxidizing the H2S of the gas stream within a catalytic zone containing an oxidation catalyst and in the presence of an inert liquid medium and molecular oxygen to form elemental... | 03/08/2011 |
| 7727507 | Process for producing a gas stream depleted of hydrogen sulphide A process for treating a gas stream comprising H2S that includes the step of selectively oxidizing the H2S of the gas stream within a catalytic zone containing an oxidation catalyst and in the presence of an inert liquid medium and molecular ox... | 06/01/2010 |
| 7645437 | Integrated boiler, superheater, and decomposer for sulfuric acid decomposition A method and apparatus, constructed of ceramics and other corrosion resistant materials, for decomposing sulfuric acid into sulfur dioxide, oxygen and water using an integrated boiler, superheater, and decomposer unit comprising a bayonet-type, dual-tube, counter-fl... | 01/12/2010 |
| 7572429 | Cyclic pre-reformer/desulphurization unit A combined desulphurization and pre-reforming processing unit converts logistic fuels such as JP-5, JP-8, gasoline, and diesel with high sulfur content levels, into a mixture of hydrogen, methane, carbon monoxide, carbon dioxide, and water without any sulfur or high... | 08/11/2009 |
| 7332057 | Method of vaporizing liquids by microwave heating This invention is directed to a method for vaporizing a liquid by slowly evaporating the liquid from a liquid phase to a vapor phase below the boiling point of the liquid; and applying an effective amount of microwave power to maintain the slow evaporation of the li... | 02/19/2008 |
| 7323036 | Maximizing regulatory credits in controlling air pollution A controller directs the operation of an air pollution control (APC) system having one or more controllable operating parameters and a defined operating limit representing a regulatory limit on an allowed amount of pollutant to be emitted by the APC system. An inter... | 01/29/2008 |
| 7311891 | Process for the recovery of sulfur from Claus tail gas streams Recovering sulfur from a gas stream containing hydrogen sulfide by oxidizing the gas stream to convert the hydrogen sulfide in the gas stream to sulfur oxide, and thus form a sulfur oxide enriched gas stream. The sulfur oxide enriched gas stream is contacted with a ... | 12/25/2007 |
| 7261874 | Gas phase electrolyzer process for producing hydrogen The invention provides a method for a sulfur based hydrogen production cycle wherein the sulfur products are maintained in a gaseous state throughout the cycle. The cycle includes a decomposition of a gaseous phase sulfur trioxide to sulfur dioxide and water in a de... | 08/28/2007 |
| 7060233 | Process for the simultaneous removal of sulfur and mercury A process for removing hydrogen sulfide, other sulfur-containing compounds and/or sulfur and mercury from a gas stream contaminated with mercury, hydrogen sulfide or both. The method comprises the step of selective oxidation of hydrogen sulfide (H2S) in a... | 06/13/2006 |
| 7056482 | Method for recovery of CO2 from gas streams A process for recovering CO2 from a feed gas stream comprises treating the feed gas stream with a regenerated absorbent comprising at least one tertiary amine absorbent having a pKa for the amino function of from about 6.5 to about 9 in the pre... | 06/06/2006 |
| 6887452 | System and method for precipitating salts A system and method for producing salts using a crystallizer with an integrated column is disclosed. In the column, liquid, containing one reactant, absorbs a second reactant, from the gas stream. The second reactant reacts with the first reactant to produce salt. L... | 05/03/2005 |
| 6689326 | Method and apparatus for introducing sulphur dioxide into aqueous solutions This invention presents a sulphurous acid generator which employs a combination of novel blending, contact and mixing mechanisms which injects sulphur gases into aqueous solution or which maximize the efficiency and duration of contact between sulphur dio... | 02/10/2004 |
| 6594553 | Process for enhancing the sulfur capture capability of an alkaline earth material The present invention provides, according to one aspect thereof, a computer controlled process for reducing SO2 from a flue gas. The process includes the basic steps of providing an aqueous treatment solution containing an inorganic salt and a ... | 07/15/2003 |
| 6521196 | Process and catalyst/sorber for treating sulfur compound containing effluent A process for adjusting the ratio of sulfur dioxide to hydrogen disulfide from the regeneration of a catalytic system of a structured support for example a monolith coated with: (i) a metal oxide sorber component selected from the group consisting of Ti, ... | 02/18/2003 |
| 6497855 | Process for the production of hydrogen from hydrogen sulfide A process is provided for the production of hydrogen from hydrogen sulfide by reacting carbon monoxide with hydrogen sulfide to produce hydrogen and carbonyl sulfide, and then reacting the carbonyl sulfide with oxygen to produce carbon monoxide and sulfur... | 12/24/2002 |
| 6471934 | Disproportionation of sulfuryl chloride fluoride A method of preparing sulfuryl fluoride by disproportionation of sulfuryl chloride fluoride in the gas phase on activated carbon.... | 10/29/2002 |
| 6399040 | Process for generating recoverable sulfur containing compounds from a spent acid stream This invention relates to a process for generating recoverable sulfur containing compounds, e.g., sulfur dioxide, from a spent sulfuric acid stream by combusting and/or thermally decomposing the spent sulfuric acid stream in a furnace. The spent sulfuric ... | 06/04/2002 |
| 6395246 | Preparation of calcium silicate and sulfur dioxide Nascent hydrogen and nascent oxygen are used to convert calcium sulfate and silicon dioxide to calcium silicate and sulfur dioxide.... | 05/28/2002 |
| 6045770 | Sulfur dioxide generation using granulated or emulsoid sulfur feedstock A flue gas conditioning system (FGC) for conditioning the flue gas flowing in a flue from a boiler to an electrostatic precipitator by injecting sulfur trioxide into the flue gas upstream of the electrostatic precipitator. The FGC has a source (52) of gra... | 04/04/2000 |
| 5824277 | Plasma oxidation of an exhaust gas stream from chlorinating titanium-containing material A process is disclosed for treating an exhaust gas stream containing COS and CO arising from chlorinating titanium-containing material with a cold plasma wherein oxygen is present and selectively oxidizing COS.... | 10/20/1998 |
| 5798087 | Method of producing gypsum After hydrogenation and desulfurization treatment of raw fuel in the desulfurization unit 1, the product is separated in the acidic gas separator 2 into fuel and a hydrogen sulfide-containing gas, and the hydrogen sulfide-containing gas is subjected to co... | 08/25/1998 |
| 5791268 | SO3 flue gas conditioning system with catalytic converter temperature control by injection of water An improved method and system for cooling the sulfur dioxide gas stream flowing from a sulfur furnace to a catalytic converter in a sulfur trioxide flue gas conditioning system. Water is injected into the sulfur dioxide gas stream upstream of the catalyti... | 08/11/1998 |
| 5780000 | Use of Z-Sorb process as catalytic incinerator for tail gas from sulfur plants An apparatus and process for removing and incinerating sulfur from tail gas being emitted from a Claus Recovery Sulfur Unit (SRU) or a Tail Gas Clean-up Unit (TGCU) is provided. The gas is processed in a Z-Sorb™ type sulfur absorber wherein the off-gas,... | 07/14/1998 |
| 5639435 | Method for producing sulfur hexafluoride The present invention is directed to methods for preparing sulfur hexafluoride by reacting sulfur tetrafluoride with oxygen. The sulfur tetrafluoride is prepared by contacting molten sulfur with a metal fluoride to produce sulfur tetrafluoride and a metal... | 06/17/1997 |
| 5609841 | Method and apparatus for treating a flow of gas containing oxidized sulphur compounds A method of treating a flow of gas containing oxidized sulphur compounds, such as an exhaust gas from coal combustion, comprising the steps of (i) treating the flow of gas to obtain a first component flow containing at least 30% of the total oxidized sulp... | 03/11/1997 |
| 5609845 | Catalytic production of hydrogen from hydrogen sulfide and carbon monoxide There is provided a process for the catalytic production of hydrogen from the reaction of hydrogen sulfide and carbon monoxide with the elimination of the carbonyl sulfide and/or sulfur dioxide by-products. The carbonyl sulfide and the sulfur dioxide are ... | 03/11/1997 |
| 5458861 | Desulfurizing a gas stream A multi-bed process of removing sulfur oxides and/or other combustible sulfur-containing compounds from a gas stream including combusting the other combustible sulfur-compounds when present in the gas stream with air or oxygen to convert such sulfur-conta... | 10/17/1995 |
| 5441716 | Method and apparatus for achieving high reaction rates A chemisorption reaction process is carried out under conditions in which the volumetric expansion of the complex compound reaction product is restricted, and at half-cycle reaction periods of less than 30 minutes each, and/or in a reaction chamber having... | 08/15/1995 |
| 5366716 | Method for recovering sulphur dioxide from the chemical circulation of a sulphate pulp mill Sulphur dioxide is separated from the flue gases of a cellulose pulp mill by absorbing it into a sodium sulphite solution. Sulphur dioxide is regenerated from the sodium bisulphite solution produced by an evaporation-crystallization method utilizing therm... | 11/22/1994 |
| 5308456 | Molten carbonate fuel cell sulfur scrubber and method using same Sulfur compounds poison catalysts, such as the anode catalysts and reformer catalysts within molten carbonate fuel cell systems. This poisoning is eliminated using a sulfur scrubber 29 located prior to the inlet of the cathode chamber 13. Anode exhaust 19... | 05/03/1994 |
| 5298231 | Method for achieving high reaction rates in solid-gas reactor systems Reaction rates in chemisorption reactions involving solid reactants and gaseous ligands are improved by maintaining optimized solid density throughout the reaction. Methods and apparatus which restrict volumetric solid expansion, compression of the solid ... | 03/29/1994 |
| 5266296 | Cocurrent flow process for the manufacture of sodium sulfite and bisulfite solutions Sodium (bi)sulfites are produced by the steps of: (a) introducing a stream of aqueous sodium carbonate into the top end of a main packed column reactor; (b) introducing a stream of sulfur dioxide gas into the top end of the main packed column reactor concurren... | 11/30/1993 |
| 5226934 | Recovery of elemental sulfur from gases A process for the separation of elemental sulfur from a gas comprises contacting the gas with molten sulfur whereby to extract the sulfur from the gas.... | 07/13/1993 |
| 5204082 | Sulfur dioxide generation by submerged combustion and reduced thermal cycling by use of a hot recycle of sulfur A method of making high purity sulfur dioxide by submerged combustion is disclosed. Sulfur is combusted in a first liquid pool with an oxygen-containing gas and the vapor effluent is removed and cooled in a first cooling zone to a temperature above approx... | 04/20/1993 |
| 5171551 | Zirconium dioxide gas desulfurization catalyst Solid catalyst substrates based on zirconium dioxide and, optionally, titanium dioxide and/or cerium dioxide, e.g., honeycombs or monoliths, are well adapted for the desulfurization and catalytic conversion of industrial gases containing contaminating amo... | 12/15/1992 |
| 5066474 | Method for sulfur dioxide production from calcium sulfate by entrained high-temperature slagging reduction A method for production of sulfur dioxide from calcium sulfate by high temperature thermal reduction. Calcium sulfate, preferably in the form of calcined phosphogypsum, is desulfurized using a fossil fuel as a heat source, the combustion products resultin... | 11/19/1991 |
| 4995945 | Counter-current gas-liquid contacting device A counter-current contacting device which includes a number of features which increase the efficiency and/or increase the pressure differential across the device is disclosed. Systems for reducing the alcohol content of an alcohol containing beverage or w... | 02/26/1991 |
| 4966757 | Sulfur dioxide generator An improved apparatus for burning sulfur to sulfur dioxide and generating sulfurous acid comprising a primary sulfur-burning chamber, a sulfur feed tank closely coupled to the primary chamber, a secondary sulfur burning chamber, and an absorption tower, A... | 10/30/1990 |
| 4946658 | Addition of pyritic materials to feed mix for desulfurization of phosphogypsum A pelletized mixture of gypsum, carbonaceous material and pyrite is charged to a travelling grate where the charge is heated under suitable conditions to produce a solid sintered material which has a broad spectrum of applications due to its chemical and ... | 08/07/1990 |
| 4943423 | Process for recovering boron trifluoride from an impure gaseous boron trifluoride residue The present invention provides a process for recovering boron trifluoride from an impure gaseous boron trifluoride residue. The process comprises: (a) feeding an impure gaseous boron trifluoride residue containing sulfur dioxide as an impurity into a mixt... | 07/24/1990 |
