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| Number | Title | Issue Date |
| 7374734 | Absorbing agent and method for eliminating acid gases from fluids The disclosure relates to an absorbent for removing acid gases from fluids. The absorbent contains at least one tertiary amine, an amine which is selected from hydroxyethylpiperazine, bis(hydroxyethylpiperazine) or a mixture of these and piperazine. The absorbent ma... | 05/20/2008 |
| 7371358 | Catalyst for treatment and control of post-combustion emissions The present invention utilizes two precious metals with two to five different metal-oxides in a layered matrix to convert CO, HCs, and NOx to CO2, and N2 by oxidation of two components and reduction of the other in a moderately high temperature... | 05/13/2008 |
| 7361209 | Apparatus and process for preparing sorbents for mercury control at the point of use A system for treating a contaminated gas stream is provided that includes a comminution device 204 operable to effect size reduction of a plurality of sorbent particles and form a plurality of comminuted particles, a plurality of nozzles 224 distribute... | 04/22/2008 |
| 7326346 | High capacity regenerable sorbent for removal of arsenic and other toxic ions from drinking water The present invention is directed to a sorbent comprising a disordered polyvalent metal oxide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate suc... | 02/05/2008 |
| 7312251 | Synthesis of stable solutions of rare earth tris (organophosphate) in hydrocarbon solvents Stable rare earth tris (organophosphate) solutions comprise a rare earth tris (organophosphate) and a hydrocarbon solvent. From about 2% to about 10% rare earth element, preferably from about 3% to about 8%, is present in the solutions. The rare earth tris (organoph... | 12/25/2007 |
| 7267811 | Fuel reformer catalyst and absorbent materials Materials that are useful for absorption enhanced reforming (AER) of a fuel, including absorbent materials and catalyst materials, and methods for using such materials for the conversion of carbon-based fuels to a H2-rich product gas. The materials can be... | 09/11/2007 |
| 7264788 | Fuel reformer catalyst and absorbent materials Materials that are useful for absorption enhanced reforming (AER) of a fuel, including absorbent materials and catalyst materials and methods for using the materials. The materials can be fabricated by spray processing. The use of the materials in AER can produce a ... | 09/04/2007 |
| 7183235 | High capacity regenerable sorbent for removing arsenic and other toxic ions from drinking water The present invention is directed to a sorbent comprising a disordered polyvalent metal oxide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered silicate suc... | 02/27/2007 |
| 7135127 | Laminated pressed articles A disk-shaped wafer is described which is based on an inorganic sorbent and a binder, with a thickness of less than 700 microns, which can be obtained by pressing a mixture of the inorganic sorbent, about 20 to 60% by weight of the binder and about 10 to 15% by weig... | 11/14/2006 |
| 7115215 | Method and composition for removing sulfides from hydrocarbon streams A method and composition for reducing the levels of hydrogen sulphide and mercaptans in hydrocarbon streams. The method comprises contacting the gas stream with a composition comprising the reaction product of mixing monoethanolamine, diglycolamine and formaldehyde.... | 10/03/2006 |
| 7094820 | Polymer additive compositions comprising highly versatile thermoplastic nucleators Bicyclic nucleator compounds that provide highly versatile nucleation benefits for different polyolefins are provided. Such nucleator compounds provide very high peak crystallization temperatures and significantly reduced crystallization cycle time for certain therm... | 08/22/2006 |
| 7074308 | Transition metal complexes with (pyridyl)imidazole ligands Novel transition metal complexes of iron, cobalt, ruthenium, osmium, and vanadium are described. The transition metal complexes can be used as redox mediators in enzyme-based electrochemical sensors. The transition metal complexes include substituted or unsubstitute... | 07/11/2006 |
| 7048778 | Apparatus and method for separating gases An apparatus and method to separate a mixture of gases, such as carbon dioxide and methane, by a ceramic membrane having a ceramic support and a silica layer. The invention can efficiently separate the gaseous mixture and can also cope with the extreme conditions fo... | 05/23/2006 |
| 7048781 | Chemically-impregnated silicate agents for mercury control The present invention is directed to a contaminant removal agent comprising a polyvalent metal sulfide on the surface of an inert substrate. The substrate can be a layered silicate, such as vermiculite, an aluminosilicate such as montmorillonite, or a nonlayered sil... | 05/23/2006 |
| 6949226 | Sodium-based dechlorinating agent and waste treatment equipment A sodium-based dechlorinating agent is added to a flue gas; hydrogen chloride contained in this flue gas is removed as residue of dechlorination; the thus removed residue of dechlorination is dissolved by adding water; water-insoluble constituents are separated from... | 09/27/2005 |
| 6942840 | Method for removal and stabilization of mercury in mercury-containing gas streams The present invention is directed to a process and apparatus for removing and stabilizing mercury from mercury-containing gas streams. A gas stream containing vapor phase elemental and/or speciated mercury is contacted with reagent, such as an oxygen-containing oxid... | 09/13/2005 |
| 6939393 | Method for neutralizing a stream of fluid, and washing liquid for use in one such method A description is given of the use of an alkylenediamine of the type R1HN—X—NHR2, where X is an alkylene radical having from 2 to 9 carbons, R1 is a hydrocarbon radical having from 1 to 6 carbons and R2 is a hydrocarbon... | 09/06/2005 |
| 6924315 | Gemini glycidyl ether adducts of polyhydroxyalkyl alkylenediamines The present invention provides compounds useful as surfactants having formula (1), including isomers thereof: wherein a and b are integers independently selected from about 3 to about 6; x is an integer from about 1 to... | 08/02/2005 |
| 6911570 | Method for fixating sludges and soils contaminated with mercury and other heavy metals The invention relates to a method, composition and apparatus for stabilizing mercury and other heavy metals present in a particulate material such that the metals will not leach from the particulate material. The method generally involves the application of a metal ... | 06/28/2005 |
| 6767927 | Synthesis of stable solutions of rare earth tris (organophosphate) in hydrocarbon solvents Stable rare earth tris (organophosphate) solutions comprise a rare earth tris (organophosphate) and a hydrocarbon solvent. From about 2% to about 10% rare earth element, preferably from about 3% to about 8%, is present in the solutions. The rare earth tris (organoph... | 07/27/2004 |
| 6746623 | Alkyl glycidyl ether-capped diamine foam controlling agent The present invention pertains to a method for controlling the foaming of a waterborne composition or in an industrial process utilizing a waterborne composition by the incorporation of a foam controlling agent in an amount effective for controlling foam. The method... | 06/08/2004 |
| 6627110 | Hydrogen sulfide removal process Hydrogen sulfide is removed from gas streams by reaction with sulfur dioxide to produce sulfur. The reaction is effected in a reaction medium comprising a non-aqueous Lewis base with a pKb value of about 6 to about 11. The reaction medium posse... | 09/30/2003 |
| 6602443 | Composition and method for acid gas treatment An improved composition and method for acid gas treatment, comprising an effective amount of tetraethylene glycol dimethyl ether, optionally in combination with other alkyl ethers of alkylene glycols. Utilization of a predominance of tetraethylene glycol ... | 08/05/2003 |
| 6592779 | Composition and method for acid gas treatment An improved composition and method for acid gas treatment, comprising an effective amount of tetraethylene glycol dimethyl ether, optionally in combination with other alkyl ethers of alkylene glycols. Utilization of a predominance of tetraethylene glycol ... | 07/15/2003 |
| 6582574 | pK-matched running buffers for gel electrophoresis pK-matched buffers, each containing two effective buffering components: one weak base and one weak acid which have similar pKa at 25° C. (within 0.3 pK units On agarose gels, the buffers in various concentrations were tested for separation of ... | 06/24/2003 |
| 6436311 | Sampling material for a carbonyl compound in a gas A sampling material for a carbonyl compound in a gas comprising a reagent capable of converting a carbonyl compound to a derivative thereof supported on a cation exchanger; and a sampling cartridge for a carbonyl compound in a gas wherein a sampling mater... | 08/20/2002 |
| 6352653 | Acid component-removing agent, method for producing it and method for removing acid components An acid component-removing agent which comprises sodium hydrogencarbonate having a volume-based mean particle diameter of from 1 to 9 μm as measured by a laser diffraction and scattering method.... | 03/05/2002 |
| 6342169 | Safe storage and transportation of sulfur dioxide The invention relates to a method of confining sulfur dioxide for storage or transportation under safe conditions. The method of the invention comprises the steps of (a) contacting a sulfur dioxide-containing gas stream with an absorbing medium comprising... | 01/29/2002 |
| 6337059 | Absorbent compositions for the removal of acid gases from gas streams An absorbent composition for the removal of acid gases, such as CO2, H2 S and COS, from gas streams is provided. The absorbent composition comprises an aqueous solution comprising: 1) greater than 1 mole piperazine per liter of aqueo... | 01/08/2002 |
| 6309618 | Method for treating exhaust gas containing fluorine-containing interhalogen compound, and treating agent and treating apparatus A treating method comprising contacting a fluorine-containing interhalogen compound first with a treating agent for the fluorine component and then with a treating agent for the halogen component, treating agents therefor, and a method for treating exhaus... | 10/30/2001 |
| 6267939 | Absorbent composition for purifying gases which contain acidic components An absorbent composition for purifying gases which contain acidic components. The composition contains at least one compound of formula (I), wherein n is 2-6, p is 1-3, the R1 groups may be the same or different and represent hydrogen or C... | 07/31/2001 |
| 6207121 | Composition and process for removal of acid gases Alkanolamines of the formula R--NHCH2 CH(OH)CH2 CH3 (I) or mixtures thereof wherein R is H, --CH2 CH(OH)CH2 CH3, an alkyl group having from 1 to 6 carbon atoms, an aryl group having from 6 to 1... | 03/27/2001 |
| 6203722 | Stabilized liquid lime dispersion for sewage treatment A stabilized lime slurry for treatment of biological solids in sewage. The composition preferably includes 30-36% calcium hydroxide, 10-16% potassium hydroxide, 2-4% potassium chloride, 2-4% magnesium hydroxide, all on a dry basis, and the balance in wate... | 03/20/2001 |
| 6165432 | Composition and process for removal of acid gases Aqueous compositions comprising a mixture of a tertiary alkanolamine and a primary alkanolamine of the formula R--CH(NH2)--CH2 --OH (I) or mixtures thereof wherein R is H, or an alkyl group having from 1 to 8 a... | 12/26/2000 |
| 6103252 | Method for reducing deflagration of azinphos-methyl The present invention relates to a stable azinphos-methyl wettable powder formulation. The composition of the present invention contains an insecticide powder formulation and a magnesium sulfate heptahydrate. The magnesium sulfate heptahydrate is added to... | 08/15/2000 |
| 6051161 | Method for the removal of carbon dioxide present in gases and absorbent This invention provides a method for the removal of carbon dioxide present in gases which comprises bringing a CO2 -containing gas into contact with an aqueous solution containing at least one amine compound of the general formula ##STR1##... | 04/18/2000 |
| 6004477 | Oxygen absorption composition An oxygen absorption composition without requiring moisture in oxygen absorption which comprises an oxygen absorbent comprising, as a principal component, an oligomer in liquid form having an unsaturated group, a number-average molecular weight in the ran... | 12/21/1999 |
| 5980845 | Regeneration of hydrogen sulfide scavengers The present invention generally provides sulfide scavenger solutions and processes that have high sulfide scavenging capacity, provide a reduction or elimination of solids formation and avoid the use of chemicals that pose environmental concerns. The inve... | 11/09/1999 |
| 5951909 | Composition for the detection of electrophilic gases and methods of use thereof There is provided a method for the detection of leaks of an electrophilic gas from a system, such as chlorodifluoromethane or carbon dioxide, which comprises applying to an exterior surface of the system a gel consisting essentially of a Lewis base capabl... | 09/14/1999 |
| 5783110 | Composition for the detection of electrophilic gases and methods of use thereof There is provided a composition for the detection of an electrophilic gas, such as chlorodifluoromethane or carbon dioxide, which comprises a Lewis base capable of removing a proton from the gas or reacting therewith in a similar electrophilic manner; a d... | 07/21/1998 |
