Abstract: Methods of producing a hydrogen-enriched product and recovering CO2 are described. A synthesis gas stream from a hydrogen production process unit is separated in a hydrogen pressure swing adsorption unit into a high-pressure hydrogen stream and a hydrogen depleted tail gas stream, and the hydrogen depleted tail gas stream is compressed. The compressed tail gas stream is separated in a CO2 fractionation system into a CO2-enriched product stream and an overhead stream. The overhead stream is separated in an overhead hydrogen PSA system into a second high-pressure hydrogen stream and a low-pressure tail gas stream. The first and second high-pressure hydrogen streams and the CO2-enriched product stream are recovered. The low-pressure tail gas stream from the overhead hydrogen PSA system is combusted with oxygen to produce steam, electricity, or both.

Abstract: A Fischer-Tropsch (FT) process with a hybrid membrane/PSA configuration provides high component recoveries from FT off gas with minimum power consumption. Synthesis gas from a synthesis gas production zone is reacted in an FT reaction zone forming a liquid stream and an off gas stream. The off gas from the FT reaction zone, which contains hydrogen, carbon monoxide, and methane reactants, is recycled to the synthesis gas production zone. A purge stream from the recycle loop is sent to a membrane separation unit where it is separated into a permeate stream and a residue stream. The residue stream is separated in a pressure swing adsorption (PSA) unit into a fuel gas stream and a second stream. The second stream can be compressed and recycled to the synthesis gas production zone.

Abstract: A Fischer-Tropsch (FT) process with a hybrid membrane/PSA configuration provides high component recoveries from FT off gas with minimum power consumption. Synthesis gas from a synthesis gas production zone is reacted in an FT reaction zone forming a liquid stream and an off gas stream. The off gas from the FT reaction zone, which contains hydrogen, carbon monoxide, and methane reactants, is recycled to the synthesis gas production zone. A purge stream from the recycle loop is sent to a membrane separation unit where it is separated into a permeate stream and a residue stream. The residue stream is separated in a pressure swing adsorption (PSA) unit into a fuel gas stream and a second stream. The second stream can be compressed and recycled to the synthesis gas production zone.

Abstract: Processes for producing a hydrogen-enriched gas stream are described. A hydrocarbon containing feed is processed in a hydrogen production process unit, and the synthesis gas formed is subjected to a water gas shift reaction. The shifted synthesis gas is sent for processing to recover hydrogen and carbon dioxide. The hydrogen and carbon dioxide recovery processes involve separating a purified hydrogen product stream and a purified carbon dioxide stream from the shifted synthesis stream and recycling synthesis gas to the reforming feed after recovery of CO2 and H2, thereby avoiding carbon slip from the process and lowering the overall carbon intensity.

Abstract: A process and apparatus for producing a hydrogen-enriched product and recovering CO2 from an effluent stream from a hydrogen production process unit are described. The process utilizes a CO2 recovery system integrated with a PSA system that produces at least two product streams to recover additional hydrogen and CO2 from the tail gas stream of a hydrogen PSA unit in the hydrogen production process.

Abstract: A process and apparatus for producing a hydrogen-enriched product and recovering CO2 from an effluent stream from a hydrogen production unit are described. The effluent from the hydrogen production unit, which comprises a mixture of gases comprising hydrogen, carbon dioxide, water, and at least one of methane, carbon monoxide, nitrogen, and argon, is sent to a PSA system that produces at least two product streams for separation. The PSA system that produces at least two product streams separates the gas mixture into a high-pressure hydrogen stream enriched in hydrogen, optionally a second gas stream containing the majority of the impurities, and a low-pressure tail gas stream enriched in CO2 and some impurities. The CO2-rich tail gas stream is compressed and sent to a CO2 recovery unit, where a CO2-enriched stream is recovered. The CO2-depleted overhead gas stream is recycled to the PSA system that produces at least two product streams.

Abstract: A bio-renewable conversion process for making fuel from bio-renewable feedstocks is combined with a hydrogen production process that includes recovery of CO2. The integrated process uses a purge gas stream comprising hydrogen from the bio-renewable hydrocarbon production process in the hydrogen production process.

Abstract: A bio-renewable conversion process for making fuel from bio-renewable feedstocks is combined with a hydrogen production process that includes recovery of CO2. The integrated process uses a purge gas stream comprising hydrogen from the bio-renewable hydrocarbon production process in the hydrogen production process.

Abstract: Processes for reducing carbon monoxide levels in a carbon dioxide rich gaseous stream. The carbon dioxide rich stream is passed to a preferential oxidation zone to selectively convert carbon monoxide to carbon dioxide. Excess oxygen is consumed by reacting with hydrogen, which may be added or controlled based on PSA operating conditions upstream of the preferential oxidation zone. The preferential oxidation zone may be contained within a bed of a dryer.

Abstract: Processes and apparatuses for operating a centrifugal gas compressor. A storage tank containing a liquid buffer material is provided and used to offset density fluctuations in the gas stream passed to the compressor. The storage tank may contain a component of the high-pressure gas stream provided by the compressor, such as carbon dioxide.

Abstract: Methods for producing hydrogen from ammonia are described. The methods involve the use of a two-stage hydrogen PSA configuration. The effluent stream from the ammonia cracking reaction zone is sent to the first hydrogen PSA unit where it is separated into a high purity, high-pressure hydrogen stream and a low-pressure tail gas stream. The high-pressure hydrogen stream can be recovered. The low-pressure tail gas stream is compressed and sent to the second hydrogen PSA unit where it is separated into a second high-pressure stream and a second low-pressure tail gas stream. The second high-pressure hydrogen stream can be recycled to the first hydrogen PSA unit for further separation.

Abstract: Processes for reducing carbon monoxide levels in a carbon dioxide rich gaseous stream. The carbon dioxide rich stream is passed to a preferential oxidation zone to selectively convert carbon monoxide to carbon dioxide. Excess oxygen is consumed by reacting with hydrogen, which may be added or controlled based on PSA operating conditions upstream of the preferential oxidation zone. The preferential oxidation zone may be contained within a bed of a dryer.

Abstract: Processes and apparatuses for recovering a high purity carbon dioxide stream. A first separation zone that may include a cryogenic fractionation column provides the high-purity CO2 stream. A vapor stream from the cryogenic fractionation column is passed to a second separation zone to separate the CO2 from the other components. The second separation zone may include a pressure swing adsorption unit or a solvent separation unit. The second separation zone provides a hydrogen enriched gas stream that may be used in a gas turbine. The second stream from the second separation zone includes carbon dioxide and, after a pressure increase in a compressor, may be recycled to the first separation zone.

Abstract: Various embodiments described herein provide a label configured for thermal conductivity and configured to pass over an edge of a printed circuit board (PCB) and attached to both sides of the printed circuit board. The label can be used with a printed circuit board that is associated with a memory sub-system, such as a memory module (e.g., solid state drive, SSD module).

Abstract: A bio-renewable conversion process for making fuel from bio-renewable feedstocks is combined with a hydrogen production process that includes recovery of CO2. The integrated process uses a purge gas stream comprising hydrogen from the bio-renewable hydrocarbon production process in the hydrogen production process.

Abstract: A process and apparatus for producing a hydrogen-enriched product and recovering CO2 from an effluent stream from a hydrogen production process unit are described. The process utilizes a CO2 recovery system integrated with a PSA system that produces at least two product streams to recover additional hydrogen and CO2 from the tail gas stream of a hydrogen PSA unit in the hydrogen production process.

Abstract: A process and apparatus for producing a hydrogen-enriched product and recovering CO2 from an effluent stream from a hydrogen production unit are described. The effluent from the hydrogen production unit, which comprises a mixture of gases comprising hydrogen, carbon dioxide, water, and at least one of methane, carbon monoxide, nitrogen, and argon, is sent to a PSA system that produces at least two product streams for separation. The PSA system that produces at least two product streams separates the gas mixture into a high-pressure hydrogen stream enriched in hydrogen, optionally a second gas stream containing the majority of the impurities, and a low-pressure tail gas stream enriched in CO2 and some impurities. The CO2-rich tail gas stream is compressed and sent to a CO2 recovery unit, where a CO2-enriched stream is recovered. The CO2-depleted overhead gas stream is recycled to the PSA system that produces at least two product streams.

Abstract: A three-product PSA system which produces three product streams from a feed gas mixture comprising a light key component, at least one heavy key component, and at least one intermediate key component is described. The three-product PSA system produces a high pressure product stream enriched in the light key component, a low pressure tail gas stream enriched in the at least one heavy key component, and an intermediate pressure vent gas stream enriched in the at least one intermediate key component.

Abstract: A stop log slot/guide cleaning method and apparatus is disclosed as a frame with attached scraping or scrubbing devices attached in locations that will contact and shear off attached marine life or debris. A flushing system that using water or compressed air or both attached and located on the frame pushes the removed or loose debris off of the stop log slot/guide seating surfaces as the frame is lowered into or removed from the slot leaving clean flat sealing surfaces for the stop log seals to seal against.

Abstract: Apparatus and process are provided to enable rapid start up of hydrogen generator (1) that use partial oxidation reforming. In the start up processes, a heated oxygen containing gas (110) is passed through the reformer (106) and at least one downstream unit operation (108) to achieve a first temperature regime. Then a heated steam containing gas is used to raise the temperatures of the reformer (106) and at least one downstream unit operation (108) to a second temperature regime at which partial oxidation reforming can be initiated.