Gas Technology Institute

Gas Research Institute

Medical University of South Carolina

University of Louisville Research Foundation, Inc.

Howard S Meyer

Shaojun Zhou

Dennis Leppin

Shiguang Li

Arunabha Basu

Anthony L Lee

Vern L Hill

Terry L Marker

Benjamin Bikson

Aqil Jamal

Martin Brendan Linck

Larry Gordon Felix

Yong Ding

Iosif K Rabovitser

Scott D Lynn

Miao Yu

Nagaraju Palla

Bruce G Bryan

Moises Abraham Carreon

John M Pratapas

James R Wangerow

Naomi Klinghoffer

Timothy Tamale

Dmitri Boulanov

Travis Pyrzynski

John J Lewnard

Dennis Rocha

Scott Lynn

Processes and systems for the capture of COfrom a CO-containing gas stream are provided. The CO-containing gas stream is passed to a membrane contactor absorber wherein the CO-containing gas contacts or passes a first side of a membrane element while a COselective solvent with a viscosity between 0.2 and 7 cP contacts, passes or flows on second side of the membrane, opposed to the first side. The COpermeates through the hollow fiber membrane pores and is chemically absorbed into the solvent.

Membrane absorption process for COcapture

A multi-stage process for recovering acid gas from natural gas having high acid gas contents utilizes two or more membrane absorption contactors arranged in series. The first membrane absorption contactor uses a physical solvent to remove a high volume of acid gas transferred across a membrane, and to reduce the acid gas content in the natural gas to a lower level that can be managed using chemical solvents. The second and, if needed, subsequent membrane absorption contactors can use a chemical solvent to remove acid gas transferred across the respective membranes and reduce the acid gas content in the natural gas to very low levels, if needed, depending on product specifications.

Method and apparatus for removing high concentration acid gas from natural gas

A process for removing carbon dioxide from a carbon dioxide-loaded solvent uses two stages of flash apparatus. Carbon dioxide is flashed from the solvent at a higher temperature and pressure in the first stage, and a lower temperature and pressure in the second stage, and is fed to a multi-stage compression train for high pressure liquefaction. Because some of the carbon dioxide fed to the compression train is already under pressure, less energy is required to further compress the carbon dioxide to a liquid state, compared to conventional processes.

Energy efficient solvent regeneration process for carbon dioxide capture

Adsorbent pellets coated with an outer nano-porous layer can be loaded with gas at loading pressures of 250 bar or greater, enabling a much higher loading than can be achieved at low pressures. The nano-porous layer provides nano-valves which can be sealed with an adsorbate such as ethanol or a hydrocarbon to close the nano-valves. The closed nano-valves maintain the high loading pressure inside the adsorbent pellets, and thus maintain the gas loading, during storage of the loaded nano-valved adsorbent pellets at much lower pressure. To release the gas, the nano-porous layer can be heated to a temperature sufficient to vaporize the adsorbate and open the nano-valves.

Method for loading and storing gas in nano-valved sorbents

A method of processing synthesis gas improves the quality of the synthesis gas by using a water gas shift reaction to increase the molar ratio of hydrogen to carbon monoxide (H:CO) in an efficient manner. A first steam of hot natural gas-based synthesis gas having a first higher molar ratio of H:CO is combined with a second stream of quenched synthesis gas having a second lower molar ratio of H:CO to provide a blend of synthesis gas having a third molar ratio of H:CO that is between the first and second molar ratios. A non-catalytic water gas shift reaction increases the molar ratio of H:CO to a fourth molar ratio that is higher than the third molar ratio, and can be about equal to or greater than the first molar ratio without supplying external heat.

Process using natural gas partial oxidation to condition syngas from gasification of other fuels

An exemplary embodiment can be a process for sweetening natural gas to liquefied natural gas specifications. The process can include providing a membrane contactor having a lumen side and a shell side. A feed natural gas is introduced to the lumen side of the membrane contactor. An absorption solvent is introduced to the shell side of the membrane contactor. COand HS are removed with the absorption solvent from the feed natural gas resulting in a sweetened natural gas containing less than 50 ppmv COand less than 4 ppmv HS. Corresponding or associated systems for such sweetening of natural gas are also provided.

Sweetening of natural gas

A method for desorption of one or more gases from a liquid stream in which a liquid stream containing at least one gas is provided to the feed side of a porous membrane and a trans-membrane pressure drop from the feed side to the opposite gas side of the membrane is created, resulting in a portion of the liquid stream filling at least a portion of the pores of the porous membrane and desorption of at least a portion of the at least one gas from the liquid stream to the gas side of the porous membrane.

Method and apparatus for desorption using a microporous membrane operated in wetted mode

A multi-stage method and apparatus for producing methane from biomass in which the biomass is hydropyrolyzed in a reactor vessel containing molecular hydrogen and a deoxygenating catalyst, the output of which is hydrogenated using a hydroconversion catalyst. The output from the hydroconversion step is provided to a water-gas-shift process providing a mixture of HO and product gases including CO, H, and methane. The mixture components are separated, resulting in a product stream comprising substantially only methane.

Method for producing methane from biomass

A method and system for co-production of electric power, fuel, and chemicals in which a synthesis gas at a first pressure is expanded using a stand-alone mechanical expander or a partial oxidation gas turbine, simultaneously producing electric power and an expanded synthesis gas at a second pressure after which the expanded synthesis gas is converted to a fuel and/or a chemical.

Co-production of fuels, chemicals and electric power using gas turbines

A multi-stage UCSRP process and system for removal of sulfur from a gaseous stream in which the gaseous stream, which contains a first amount of HS, is provided to a first stage UCSRP reactor vessel operating in an excess SOmode at a first amount of SO, producing an effluent gas having a reduced amount of SO, and in which the effluent gas is provided to a second stage UCSRP reactor vessel operating in an excess HS mode, producing a product gas having an amount of HS less than said first amount of HS.

Process and system for removing sulfur from sulfur-containing gaseous streams

A method and apparatus for separation of Hgas from a gaseous mixture utilizing an Hgas permeable metallic membrane supported directly on a porous substrate made up of at least one porous polymeric hollow fiber. In accordance with one preferred embodiment, the porous substrate is made up of a plurality of porous polymeric hollow fibers, forming a porous hollow fiber membrane. In accordance with one embodiment, a cooling fluid is disposed in contact with the hollow fiber, thereby enabling advantageous operation of the Hgas separation process at elevated temperatures in the range of about 200&#xb0; F. to about 800&#xb0; F.

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A method for recovering sulfur from a sulfur-bearing process gas stream in which a process gas stream comprising HS and/or SOis contacted with a lean mixture of a lean UCSRP solution and a catalyst for promotion of a reaction between HS and SOin anon-UCSRP vessel at a temperature below which HS and SOreact, whereby at least a portion of the HS and/or SOis absorbed by the lean UCSRP solution, forming a rich mixture of a rich UCSRP solution and the catalyst. The rich mixture is introduced into a UCSRP vessel and heated to a reaction temperature greater than or equal to a melting temperature of sulfur, forming elemental sulfur and HO.

Sulfur recovery process

A method for contacting a liquid with a gas in which the gas is introduced into a vessel containing at least one hollow fiber membrane having a plurality of porous hollow fibers. The liquid is introduced into a lumen of at least a portion of the plurality of porous hollow fibers at a liquid pressure sufficient to overcome a resistance to wetting of the porous hollow fibers, thereby covering at least a portion of an outer surface of the plurality of porous hollow fibers with the liquid and providing intimate contact between the gas and the liquid.

Method for creating a gas-liquid contact area

A mixed-solid solution tri-metallic oxide/sulfide catalyst having the formula:

Growing community of inventors

Hoffman Estates, IL, United States of America

Howard S Meyer