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 |
| 8105420 | Method for inhibiting amine degradation during COcapture from a gas stream The present application includes a method for inhibiting amine degradation during CO2 capture from flue gas streams. Particularly, the present disclosure relates to a method of inhibiting O2- and/or SO2-induced degradation of amines ... | 01/31/2012 |
| 8070856 | Polyamine/alkali salt blends for carbon dioxide removal from gas streams Novel solvents and methods of use for the removal of CO2 from flue gas, natural gas, hydrogen gas, synthesis gas, and other process and waste gas streams are provided. The solvent contains an alkali salt such as potassium carbonate and a polyamine such as... | 12/06/2011 |
| 8034166 | Carbon dioxide absorbent requiring less regeneration energy A description is given of an absorption medium for removing carbon dioxide from a gas stream, which comprises an aqueous solution of at least one amine and at least one aminocarboxylic acid and/or aminosulfonic acid. The concomitant use of an aminocarboxylic acid or... | 10/11/2011 |
| 7887620 | Removal of carbon dioxide from flue gases A description is given of a process for removing carbon dioxide from gas streams in which the partial pressure of the carbon dioxide is less than 200 mbar, in particular flue gases, the gas stream being contacted with a liquid absorption medium which comprises an aq... | 02/15/2011 |
| 7789945 | Maintaining low carbon monoxide levels in product carbon dioxide A process for maintaining a low carbon monoxide content in a carbon dioxide product that is made in a synthesis gas purification process is disclosed. More particularly, the invention involves an improved process in which a portion of a loaded solvent is sent throug... | 09/07/2010 |
| 7740689 | COabsorption solution Disclosed is a formulation for the absorption of CO2, which comprises water, at least one CO2 absorption compound and a carbonic anhydrase as an activator to enhance the absorption capacity of the CO2 absorption compound. The inventi... | 06/22/2010 |
| 7699910 | COabsorption solution Disclosed is a formulation for the absorption of CO2, which comprises water, at least one CO2 absorption compound and a carbonic anhydrase as an activator to enhance the absorption capacity of the CO2 absorption compound. The inventi... | 04/20/2010 |
| 7699909 | Systems and methods for extraction of carbon dioxide from air The present invention describes methods and systems for extracting, capturing, reducing, storing, sequestering, or disposing of carbon dioxide (C02), particularly from the air. The CO2 extraction methods and systems involve the use of chemical ... | 04/20/2010 |
| 7559977 | Purification works for thermal power plant A method for separation of CO2 from the combustion gas from a thermal power plant fired with fossil fuel, wherein the combustion gas from the thermal power plant is used as cooled, compressed and reheated by combustion of natural gas in a combustion chamb... | 07/14/2009 |
| 7424808 | Configurations and methods of acid gas removal A plant includes an absorber (105) that receives a feed gas (10) at a pressure of at least 400 psig and comprising at least 5 mol % carbon dioxide, wherein the absorber (105) is operated at an isothermal or decreasing top-to-bottom thermal gradi... | 09/16/2008 |
| 7407532 | Process for separating NH, and optionally also COand HO, from a mixture containing NH, COand HO The invention relates to a process for separating NH3 from a mixture containing NH3, CO2 and H2O which comprises an NH3 rectification step carried out in a NH3 separation device to which one or more s... | 08/05/2008 |
| 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 |
| 7318854 | System and method for selective separation of gaseous mixtures using hollow fibers A system and method for separation of a gas, e.g., carbon dioxide, from a gaseous mixture using a hollow fiber membrane module. The module contains an absorbent solution that is effective in absorbing the gas for an extended period, e.g., eight hours, without regene... | 01/15/2008 |
| 7309440 | Method for desalination of water and removal of carbon dioxide from exhaust gases This invention relates to a method for desalination of seawater (5, 30) and separation of CO2 from exhaust (77) from a gas turbine (7). LNG (4) is fed into a heat exchanger (6) in which it receives heat from seawater ( | 12/18/2007 |
| 7273513 | Acid gas removal The use of turbulent contactors to simultaneously absorb selected acid gas components from a gas stream and flash off hydrocarbons entrained in a liquid stream which include a solvent or reagent for the selected gas component. In particular, the method comprises fee... | 09/25/2007 |
| 7204867 | High pressure gas processing configurations and methods Contemplated plants comprise an acid gas removal unit that receives a compressed gas from an injection gas compressor, wherein acid gas is removed from the compressed gas in the acid gas removal unit at a pressure approximately above pipeline pressure. ... | 04/17/2007 |
| 7192468 | Configurations and method for improved gas removal A plant includes an absorber (103) that operates in a gas phase supercritical region and removes an acid gas from a feed stream (9) at high recovery of the feed stream (10) while producing a high purity acid gas stream (36). Particularly ... | 03/20/2007 |
| 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 |
| 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 |
| 7128777 | Methods and systems for selectively separating COfrom a multicomponent gaseous stream to produce a high pressure COproduct Methods are provided for the selective removal of CO2 from a multicomponent gaseous stream to provide a CO2 depleted gaseous stream. In practicing the subject methods, an initial multicomponent gaseous stream is contacted with an aqueous fluid ... | 10/31/2006 |
| 7083662 | Generation of elevated pressure gas mixtures by absorption and stripping Method of making a product gas mixture comprising providing a first gas mixture, contacting the first gas mixture with a lean absorber liquid at a first pressure and absorbing a portion of the first gas mixture in the lean absorber liquid to provide a rich absorber ... | 08/01/2006 |
| 7078011 | Method of storing and supplying hydrogen to a pipeline A method of storing and supplying a gaseous hydrogen product to a pipeline under a product purity specification in which a hydrogen stream made up of gaseous hydrogen is compressed to form a compressed hydrogen stream and introduced into a salt cavern for storage. A... | 07/18/2006 |
| 7018451 | Fluid separation system A method of removing acid gas components from a gas mixture. Certain embodiments of the method involve bringing the gas mixture into contact with a liquid solvent or reagent for the acid gases in a first turbulent contactor and subjecting the gas mixture and liquid ... | 03/28/2006 |
| 7004997 | Method for removal of acid gases from a gas flow A process is described for removing acid gases from a gas stream in which an acid-gas-containing gas stream in which the sum of the partial pressures of the acid gases does not exceed 1,500 mbar is brought into contact with an aqueous absorbent in an absorption step... | 02/28/2006 |
| 6977007 | Method for separating a gas mixture with a permeation membrane unit A method of separating a gas mixture using a permeation membrane unit, wherein the gas mixture, containing primarily hydrogen and carbon monoxide, is first treated to reduce the level of secondary components to lower than 100 molar ppm. ... | 12/20/2005 |
| 6969418 | Phase enhanced gas-liquid absorption method A phase enhanced gas-liquid absorption method is disclosed. By adding an organic mixture or compound into a conventional gas-liquid system, the organic mixture forms a layer between the gas mixture and the liquid carrier. In this modified system, the absorption rate... | 11/29/2005 |
| 6946017 | Process for separating carbon dioxide and methane A process for separation of carbon dioxide and methane in which a gas mixture comprising carbon dioxide and methane is brought into contact with a methane hydrate solid material disposed in a reactor vessel, whereby the methane hydrate is displaced by carbon dioxide... | 09/20/2005 |
| 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 |
| 6929680 | CO2 separator method and apparatus A process for concentrating and recovering methane and carbon dioxide from landfill gas includes absorption of commonly occurring pollutants using a carbon dioxide absorbent which itself may be in situ recoverable constituent. Separated methane is concentrated into ... | 08/16/2005 |
| 6881244 | Method and device for preventing deposits in steam systems The present invention relates to a method for preventing the deposition of contaminants in steam systems. In a method of this type, deposits are prevented in a simple and economic manner by metering an additive into the steam, which additive adheres to the steam-sid... | 04/19/2005 |
| 6852144 | Method for removing COS from a stream of hydrocarbon fluid and wash liquid for use in a method of this type COS is selectively removed with respect to CO2 from a hydrocarbonaceous fluid stream which contains CO2 and COS. Examples of the fluid stream include a gas stream, for example natural gas, synthesis gas from heavy oil or heavy residues or refin... | 02/08/2005 |
| 6821317 | Wet-process gas treatment method and wet-process gas treatment apparatus In a wet-process gas treatment method of treating an acid gas by using at least two treating columns connected in series, a ratio of the concentration of an acid gas at an outlet to a concentration of the acid gas at an inlet of a first treating column is set higher... | 11/23/2004 |
| 6797039 | Methods and systems for selectively separating CO2 from a multicomponent gaseous stream Methods are provided for the selective removal of CO2 from a multicomponent gaseous stream to provide a CO2 depleted gaseous stream. In practicing the subject methods, an initial multicomponent gaseous stream that includes a gaseous CO2 | 09/28/2004 |
| 6793712 | Heat integration system for natural gas liquefaction A pretreatment system for natural gas liquefaction employing heat integration for more efficient and effective natural gas temperature control. The pretreatment system expands the natural gas prior to acid gas removal. After acid gas removal, the natural gas is cool... | 09/21/2004 |
| 6764530 | Exhaust heat utilization method for carbon dioxide recovery process An exhaust heat utilization method for a carbon dioxide recovery process comprises heating returning hot water by at least one heat exchange selected from heat exchange with the regenerated absorbing liquid after heat exchange, heat exchange with carbon dioxide exha... | 07/20/2004 |
| 6735979 | Process for pretreating a natural gas containing acid gases A process for pretreating a very acid natural gas containing a substantial amount of hydrogen sulfide (H2S), possibly combined with carbon dioxide (CO2), includes at least a stage wherein the initial natural gas is contacted in a distillation c... | 05/18/2004 |
| 6666908 | Process for deacidizing a gas with washing of the hydrocarbons desorbed upon regeneration of the solvent Within the scope of a process using two absorption sections for treating a natural gas containing CO2 and/or H2 S, as well as mercaptans, COS and/or CS2, the present invention aims to wash the gaseous hydrocarbons desorbed... | 12/23/2003 |
| 6645272 | Process for deacidizing a gas by absorption in a solvent with temperature control In a process for treating a gas containing acid gases, the gas is contacted with a methanol-containing aqueous phase and is then contacted in an absorption column with a mixture of solvents including mehtanol, water and a solvent heavier than methanol. Th... | 11/11/2003 |
| 6638342 | Process and facility for removing metal contaminants from fertilizer streams A process and system for producing fertilizers with reduced levels of contaminants, and particularly a flue gas scrubbing process and facility that produce a fertilizer byproduct which is treated to remove heavy metals originally present in the scrubbed f... | 10/28/2003 |
| 6620091 | Underwater scrubbing of CO2 from CO2-containing hydrocarbon resources A method for removing CO2 from a CO2 -containing hydrocarbon asset. The process includes contacting a CO2 -containing hydrocarbon asset with an aqueous liquid stream at an underwater location so that at least a portion of ... | 09/16/2003 |
