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公开(公告)号：US20230119784A1
公开(公告)日：2023-04-20
申请号：US17905448
申请日：2021-02-23
发明人： Torkild R. Reinertsen , Stein Bernhardsen , Erling Rytter , Dag Schanke , Dag Vareide , Mohammad Ostadi
摘要： Disclosed herein is a method of producing hydrogen, the method comprising: receiving a feed gas comprising hydrocarbons; performing one or more reforming processes on the feed gas so as to generate a reformed gas comprising hydrogen and carbon monoxide; performing a water-gas-shift process on the reformed gas so as to generate a shifted gas comprising hydrogen and carbon dioxide; performing a hydrogen separation process and a carbon dioxide separation process on the shifted gas to thereby generate separate streams of hydrogen, carbon dioxide and a rest gas; and the method further comprises recycling at least part of the rest gas by feeding at least part of the rest gas back into one or more of the one or more reforming processes, the water-gas-shift process, the hydrogen separation process and the carbon dioxide separation process; wherein the portion of the rest gas that is recycled is at least 50%, preferably at least 80%, and more preferably at least 90%.
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公开(公告)号：US11629050B2
公开(公告)日：2023-04-18
申请号：US17377592
申请日：2021-07-16
摘要： A method for decreasing the SFFC of a steam reforming plant, including establishing a base operating mode. Then modifying the base operating mode by introducing the shift gas stream into a solvent based, non-cryogenic separator prior to introduction into the pressure swing adsorption and introducing the compressed hydrogen depleted off-gas stream in a membrane separation unit, wherein the membrane is configured to produce the hydrogen enriched permeate stream at a suitable pressure to allow the hydrogen enriched permeate stream to be combined with carbon dioxide lean shift gas stream, prior to introduction into the pressure swing adsorption unit without requiring additional compression. Thereby establishing a modified operating mode. Wherein said pressure swing adsorption unit has a modified overall hydrogen recovery. Wherein said modified operating mode has a modified hydrogen production, a modified hydrogen production unit firing duty, a modified SCO2e, and a modified SFFC.
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3.发明授权公开(公告)号：US11618676B2
公开(公告)日：2023-04-04
申请号：US17079312
申请日：2020-10-23
申请人： H2 PowerTech, LLC
摘要： Hydrogen-producing fuel processing systems and related methods. The systems include a hydrogen-producing region configured to produce a mixed gas stream from a feedstock stream, a hydrogen-separation membrane module having at least one hydrogen-selective membrane and configured to separate the mixed gas stream into a product hydrogen stream and a byproduct stream, and an oxidant delivery system configured to deliver an oxidant-containing stream to the hydrogen-separation membrane module in situ to increase hydrogen permeance of the hydrogen-selective membrane. The methods include operating a hydrogen-producing fuel processing system in a hydrogen-producing regime, and subsequently operating the hydrogen-producing fuel processing system in a restoration regime, in which an oxidant-containing stream is delivered to the hydrogen-separation membrane module in situ to expose the at least one hydrogen-selective membrane to the oxidant-containing stream to increase the hydrogen permeance of the at least one hydrogen-selective membrane.
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公开(公告)号：US20230101158A1
公开(公告)日：2023-03-30
申请号：US17533301
申请日：2021-11-23
发明人： Shoubin YU
IPC分类号： C01B3/04 , H01M8/0606 , H01M8/0662 , C01B3/50 , B01D53/86 , B01D53/26 , H05H1/48
摘要： A module for fueling a hydrogen cell is provided including a hydrogen production device, a hydrogen purification device and a hydrogen cell power generation system. The hydrogen production device comprises: a housing, a cavity being formed in the housing, and a first opening, a second opening and a third opening which all communicate with the cavity being formed in the housing; a plasma generating unit contained in the cavity and comprising a first electrode and a second electrode, the first electrode being close to the first opening, and the second electrode being close to the second opening; a voltage supply unit, a power supply end of the voltage supply unit being electrically connected to the first electrode and the second electrode, and a potential difference exists between the first electrode and the second electrode to generate plasma; a feeding unit communicating with the first opening; and an exhaust unit.
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公开(公告)号：US11590449B2
公开(公告)日：2023-02-28
申请号：US17403538
申请日：2021-08-16
申请人： Element 1 Corp.
IPC分类号： B01D53/22 , B01D71/02 , C01B3/50 , B23K20/22 , B23K20/02 , B23K20/16 , B01D63/08 , B23K103/08
摘要： Hydrogen purification devices and their components are disclosed. In some embodiments, the devices may include at least one foil-microscreen assembly disposed between and secured to first and second end frames. The at least one foil-microscreen assembly may include at least one hydrogen-selective membrane and at least one microscreen structure including a non-porous planar sheet having a plurality of apertures forming a plurality of fluid passages. The planar sheet may include generally opposed planar surfaces configured to provide support to the permeate side. The plurality of fluid passages may extend between the opposed surfaces. The at least one hydrogen-selective membrane may be metallurgically bonded to the at least one microscreen structure. In some embodiments, the devices may include a permeate frame having at least one membrane support structure that spans at least a substantial portion of an open region and that is configured to support at least one foil-microscreen assembly.
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公开(公告)号：US11583824B2
公开(公告)日：2023-02-21
申请号：US16905798
申请日：2020-06-18
发明人： Aadesh Harale , Aqil Jamal , Stephen N. Paglieri , Henk van Veen , Francesco Sebastiani , Gerard de Jong , Jaap Vente
摘要： A system and method for producing hydrogen from hydrocarbon and steam, including a membrane reformer with multiple membrane reactors each having a tubular membrane. The bore of the tubular membrane is the permeate side for the hydrogen. The region external to the tubular membrane is the retentate side for carbon dioxide. A sweep gas flows through the bore to displace hydrogen in a direction countercurrent to flow of hydrocarbon and steam in the region external to the tubular membrane. The method includes discharging hydrogen as permeate with the sweep gas from the bore, and discharging carbon dioxide in the region external to the tubular membrane as retentate from the membrane reactor.
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公开(公告)号：US11560308B2
公开(公告)日：2023-01-24
申请号：US16467605
申请日：2017-11-20
IPC分类号： C01B3/52 , B01D53/14 , C01B3/34 , C10J3/82 , C10K1/00 , F25J3/02 , C01B3/38 , C01B3/50 , F25J3/04 , B01D53/00
摘要： Method and plant for generating a synthesis gas which consists mainly of carbon monoxide and hydrogen and has been freed of acid gases, proceeding from a hydrocarbonaceous fuel, and air and steam, wherein low-temperature fractionation separates air into an oxygen stream, a tail gas stream and a nitrogen stream, wherein the tail gas stream and the nitrogen stream are at ambient temperature and the nitrogen stream is at elevated pressure, wherein the hydrocarbonaceous fuel, having been mixed with the oxygen stream and steam at elevated temperature and elevated pressure, is converted to a synthesis gas by a method known to those skilled in the art, and wherein acid gas is subsequently separated therefrom by low-temperature absorption in an absorption column, wherein the nitrogen stream generated in the fractionation of air is passed through and simultaneously cooled in an expansion turbine and then used to cool either the absorbent or the coolant circulating in the coolant circuit of the compression refrigeration plant.
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公开(公告)号：US11554955B2
公开(公告)日：2023-01-17
申请号：US16765588
申请日：2018-11-08
发明人： Jean-Pierre Tranier
IPC分类号： C01B3/48 , C01B32/50 , B01D53/047 , B01D53/22 , B01J19/00 , B01J19/24 , C01B3/50 , C01B3/56 , F25J3/02
摘要： The invention relates to a process for the combined production of hydrogen and carbon dioxide from a hydrocarbon mixture, in which the residual gas of a PSA H2 (12) is separated by permeation in order to reduce the hydrocarbon content thereof and the hydrocarbon-purified gas is separated at a low temperature to produce a carbon dioxide-rich liquid (22).
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9.发明申请公开(公告)号：US20220396479A1
公开(公告)日：2022-12-15
申请号：US17577625
申请日：2022-01-18
摘要： The invention relates to the chemical industry and can be used for processing methane and other volatile, liquid, solid fusible hydrocarbons when producing hydrogen, soot, and other flammable gases. The invention relates to a method for the pyrolytic decomposition of hydrocarbons, in which a pyrolysis reactor arranged in a space bounded by a lining is heated by flue gases generated by combusting a hydrogen-enriched mixture of air and gaseous hydrocarbons, while ensuring a maximum decrease in CO2 emissions into the atmosphere. The invention also relates to a unit for the pyrolytic decomposition of hydrocarbons. The technical result is a high degree of separation of hydrogen and carbon by fast high-temperature pyrolysis at atmospheric pressure without oxygen supply and without CO2 production.
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公开(公告)号：US11486636B2
公开(公告)日：2022-11-01
申请号：US14400213
申请日：2013-05-10
发明人： Jose Lourenco , MacKenzie Millar
摘要： A method to recover olefins and C2+ fractions from refineries gas streams. The traditional recovery methods employed at refineries are absorption with solvents and cryogenic technology using compression and expansion aided by external refrigeration systems. In contrast to known methods, there is provided first a pre-cooling heat exchanger on a feed line feeding the gas stream to a in-line mixer, secondly by injecting and mixing a stream of LNG to condense the C2+ fractions upstream of the fractionator. The temperature of the gas stream entering the fractionator is monitored downstream of the in-line mixer. A LNG stream is temperature controlled to flow through the injection inlet and mix with the feed gas at a temperature which results in the condensation of the C2+ fractions before entering the fractionator. A LNG reflux stream is temperature controlled to maintain fractionator overhead temperature. The fractionator bottoms temperature is controlled by a circulating reboiler stream.
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