Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 8168149 | Promoter enhanced chilled ammonia based system and method for removal of COfrom flue gas stream A method and system for CO2 capture from flue gas uses an absorber vessel in which a flue gas stream containing CO2 is contacted with an ammoniated solution to remove CO2 from the flue gas, and a regenerator vessel in which CO2 ... | 05/01/2012 |
| 8158091 | Sulfide scavenging processes Processes directed to the removal of sulfurous compounds from air are presented herein. The compositions and processes may be able to treat air with H2S concentrations of at least 1000 ppm. The processes are used to remove sulfurous compounds from air ass... | 04/17/2012 |
| 7931882 | Sulfide scavenging media and associated methods Compositions and associated methods directed to the removal of sulfurous compounds from air are presented herein. The compositions and methods may be able to treat air with H2S concentrations of at least 1000 ppm. The compositions and associated methods a... | 04/26/2011 |
| 7910078 | Method of capturing carbon dioxide from gas streams The present invention relates to a method for removing carbon dioxide (CO2) from a gas stream. Particularly, the present invention relates to a method for removing CO2 from a gas stream by a liquid absorbent having an amino alcohol derived from... | 03/22/2011 |
| 7862788 | Promoter enhanced chilled ammonia based system and method for removal of COfrom flue gas stream A chilled ammonia based CO2 capture system and method is provided. A promoter is used to help accelerate certain capture reactions that occur substantially coincident to and/or as a result of contacting a chilled ammonia based ionic solution with a gas st... | 01/04/2011 |
| 7829049 | Method for recovery of high purity carbon dioxide from a gaseous source comprising nitrogen compounds The present invention describes a method for recovery of high purity carbon dioxide, which is substantially free of nitrogen oxides. The present invention also discloses a plant for recovery of said high purity carbon dioxide comprising an absorption column, a flash... | 11/09/2010 |
| 7695702 | Optimization of amine regeneration system start-up using flash tank pressurization A system for optimizing operation of an amine regeneration system comprising a flash tank, a rich/lean heat exchanger, a still, a reflux condenser, a reflux accumulator, a pump, a reboiler, and a flash tank pressurization assembly. ... | 04/13/2010 |
| 7687048 | Amine treatment in light olefin processing Processing schemes and arrangements for the amine treatment of high olefin content (e.g., ethylene-rich) carbon dioxide-containing streams such as for the effective separation and removal of carbon dioxide therefrom are provided. Corresponding or associated processi... | 03/30/2010 |
| 7645433 | Optimization of reflux accumulator start-up in amine regeneration system A system for optimizing start-up of an amine regeneration system comprising a rich/lean heat exchanger, a still, a reflux condenser, a reflux accumulator, a pump, a reboiler, and a reflux accumulator fill line assembly. ... | 01/12/2010 |
| 7601315 | Process for the recovery of carbon dioxide from a gas stream A process for removing acid gas from a gas stream utilizes a low viscosity absorbent comprising a solution of at least one selected amine. The absorbent may include (1) at least one polyamine in the absence of an effective amount of tertiary amine functionalities ha... | 10/13/2009 |
| 7442233 | Integrated heavy hydrocarbon removal, amine treating and dehydration The present invention is directed to an improved integrated process for the removal of heavy hydrocarbons, carbon dioxide, hydrogen sulfide, and water from a raw natural gas feed stream. More specifically, the integrated process of the present invention comprises a ... | 10/28/2008 |
| 7425314 | Process for removing sulphur compounds including hydrogen sulphide and mercaptans from gas streams A process for the removal of hydrogen sulfide and mercaptans from a gas stream containing a high ratio of mercaptans to hydrogen sulfide, wherein the first step removes hydrogen sulfide by washing the gas stream with an aqueous washing solution comprising water, a p... | 09/16/2008 |
| 7419646 | Method of deacidizing a gas with a fractional regeneration absorbent solution The gaseous effluent flowing in through line 1 is contacted in absorption zone ZA with the liquid absorbent solution flowing in through line 9. The gaseous effluent depleted in acid compounds is discharged through line 2. The absorbent solution ... | 09/02/2008 |
| 7396388 | Integrated heavy hydrocarbon removal, amine treating and dehydration The present invention is directed to an improved integrated process for the removal of heavy hydrocarbons, carbon dioxide, hydrogen sulfide, and water from a raw natural gas feed stream. More specifically, the integrated process of the present invention comprises a ... | 07/08/2008 |
| 7387768 | Method for purifying gases The invention relates to the use of an absorption liquid for purifying gases from gaseous acidic contaminants, the absorption liquid comprising A) 0.1 to 100% by weight of one or more amines of the formula I ... | 06/17/2008 |
| 7384611 | Configurations and methods for effluent gas treatment Methods and configurations are drawn to a plant in which an effluent gas with a sulfur dioxide content of more than 1.5% is mixed with a substantially sulfur dioxide free offgas from a contactor to form a mixed feed gas for a hydrogenation reactor, wherein the mixed... | 06/10/2008 |
| 7384616 | Waste gas treatment process including removal of mercury A process for removing contaminants from a waste gas stream comprises treating the waste gas stream to remove at least one of SO2 and NOx and to obtain a lean stream having a reduced level of at least one of SO2 and NOx an... | 06/10/2008 |
| 7384617 | Process and equipment for treating refinary gases containing hydrogen sulphide A process for the abatement of hydrogen sulphide in refinery gases by means of a liquid-ring compressor (10) uses, as service liquid, an aqueous solution of amines already available in the refinery itself. The process also comprises a stage of washing of the ... | 06/10/2008 |
| 7377967 | Split flow process and apparatus An acid gas removal plant includes an absorber that provides a rich solvent to two regenerators that independently generate a lean and a semi-lean solvent, wherein the semi-lean solvent is produced in one of the regenerators using heat and/or steam derived from the ... | 05/27/2008 |
| 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 |
| 7323600 | Process for improving the conversion of oxazolidones to alkanolamines There is provided a regeneration process for converting oxazolidones such as hydroxypropyloxazolidone (HPOZD) to alkanolamines such as di-isopropanolamine (DIPA) and CO2. An amine stream containing HPOZD joins a stream that includes a caustic solution. Th... | 01/29/2008 |
| 7316737 | Amine recovery apparatus and decarbonation apparatus having same An amine recovery apparatus includes a carbon dioxide absorption section and plural water washing sections. The carbon dioxide absorption section brings the exhaust gas into vapor-liquid contact with an absorbing solution containing an amine compound and produces de... | 01/08/2008 |
| 7311758 | Method of purifying a natural gas by mercaptan adsorption The raw natural gas is deacidized and dehydrated in units DA and DH. The treated gas is then purified by adsorption of the mercaptans in first enclosure A1. Part of the purified gas is heated in E1, then fed into second enclosure A2 so as to dis... | 12/25/2007 |
| 7309382 | Use of a two-phase turbine in a gas treating process The gas to be processed, flowing in through line 10, contains impurities. This gas is contacted in column C1 with a solvent flowing in through line 18. The scrubbed gas is discharged through line 19. The impurity-laden solvent recovered t... | 12/18/2007 |
| 7288136 | High capacity immobilized amine sorbents A method is provided for making low-cost CO2 sorbents that can be used in large-scale gas-solid processes. The improved method entails treating an amine to increase the number of secondary amine groups and impregnating the amine in a porous solid support.... | 10/30/2007 |
| 7288234 | Glycols as an adjuvant in treating wastes using the Molten Salt Oxidation process An improved system and method for using polyethylene glycol (PEG) as a processing fluid additive for safely and effectively treating water-wet hogout propellant as well as any other water-wet propellants, explosives and hazardous wastes (solids and liquids) to make ... | 10/30/2007 |
| 7282189 | Production of hydrogen and removal and sequestration of carbon dioxide from coal-fired furnaces and boilers Methods for reducing and eliminating carbon dioxide from the emissions of solid fuel fired power plants, particularly coal fired power plants, and to sequester the carbon dioxide, typically by using existing equipment. In some embodiments, the methods involve pyroly... | 10/16/2007 |
| 7264786 | Method of scavenging hydrogen sulfide and/or mercaptans from fluid and gas streams Hydrogen sulfide and mercaptans may be removed from a fluid or gaseous stream by reacting the hydrogen sulfide and mercaptans in the stream with a scavenger selected from a: (i.) 1,3,5-trisalkanylamino hexahydro-1,3,5-triazine deri... | 09/04/2007 |
| 7264231 | Diffused gas aeration apparatus An aeration apparatus including a cylindrical passage tube, a static mixer positioned in the passage tube adjacent an upper end of the tube and including a plurality of perforated blades and an opening between the blades along a central axis of the tube, a pneumatic... | 09/04/2007 |
| 7252703 | Direct contact liquid air contaminant control system The direct contact liquid air contaminant control system and method to revitalize air by removal of carbon dioxide and other trace gas contaminants use a direct contact air, liquid scrubber element and stripper element. The scrubber element has two rotor elements ro... | 08/07/2007 |
| 7214358 | Low energy regenerable SOscrubbing process Sulphur dioxide is removed from gas streams by contacting the gas stream with an absorbing medium containing an amine capable of forming an amine salt, heat stable salt and sulfite. The level of heat stable salt is selected such that during the regeneration process ... | 05/08/2007 |
| 7211128 | Method of purifying a natural gas by mercaptan adsorption The raw natural gas is pretreated in treating unit 30. The treated gas is then purified by adsorption of the mercaptans in first enclosure 31. The various cuts that make up the purified gas are separated in fractionating unit 34. Part of the met... | 05/01/2007 |
| 7211665 | Sulfide scavenger 1,3,5-(2H2,4H2,6H2) tripropanediamine N,N,N′,N′,N″,N″ hexamethyl is used to scavenge sulfur compounds from hydrocarbons. A novel method of making the triazine comprises autocondensing (CH3)2NCH2 | 05/01/2007 |
| 7189282 | Method for eliminating mercaptan from crude gas This invention relates to a process for cleaning gas, in particular hydrocarbonaceous gas such as e.g. natural gas, which is contaminated with sulfur in the form of H2S and mercaptans as well as CO2. To remove the undesired sulfur-contai... | 03/13/2007 |
| 7175820 | Natural gas deacidizing and dehydration method The natural gas is deacidized by contacting in zone 3 with a solvent containing amine in aqueous solution. The gas is then dehydrated by contacting in zone 4 with a solvent very rich in amine. After the contacting operations, the solvent containing H | 02/13/2007 |
| 7157070 | Method for purifying gas containing hydrocarbons A hydrocarbon gas containing H2S, mercaptans and CO2 is fed to an absorption plant operated at a pressure of 20 to 80 bar and supplied with a selective solvent, a solvent stream loaded with H2S and a roughly desulfurized gas stream a... | 01/02/2007 |
| 7152430 | Method of separating COfrom hydrocarbon gas A method of separating CO2 from a hydrocarbon gas inlet stream that is within predetermined pressure and temperature ranges including the steps of subjecting the inlet stream to fractional distillation providing a bottom product stream and a distillation ... | 12/26/2006 |
| 7147691 | Acid gas enrichment process The arrangements described herein are based upon a theory of selective absorption of hydrogen sulphide over carbon dioxide from gas based on countercurrent contact between gas and tertiary or other amines which exhibit preferential affinity for H2S over C... | 12/12/2006 |
| 7147783 | Method for reducing hydrogen sulfide emissions from wastewater A cost-effective method for reducing the dissolved sulfide content in a wastewater stream and thereby hydrogen sulfide emissions therefrom involving the steps of adding a transition metal salt to the wastewater stream at the upper reaches of a wastewater collection ... | 12/12/2006 |
| 7134941 | Methods for residue removal and corrosion prevention in a post-metal etch process A method of plasma assisted CO2 cleaning for dry removal of residual photoresist and sidewall polymer with an etch gas mixture comprising fluorine containing gas, oxygen and hydrogen in N2 or H2O. The process removes polymer residues... | 11/14/2006 |
