摘要:
Higher molecular weight hydrocarbon compounds or oxygenates are produced from a gas comprising methane in a process comprising the steps of generating synthesis gas (“syngas”) comprising carbon monoxide and hydrogen by reaction of a gas comprising methane with steam and/or an oxidant gas comprising oxygen, producing higher molecular weight hydrocarbon compounds or oxygenates in a syngas conversion process, removing offgas comprising unreacted hydrogen and unreacted carbon monoxide from said syngas conversion process and separating cryogenically unreacted hydrogen from said offgas or from a gas derived therefrom to produce separated hydrogen product that is substantially free of unreacted carbon monoxide and a first cryogenic liquid comprising unreacted carbon monoxide. The unreacted hydrogen is preferably separated from the offgas in a liquid methane wash column.
摘要:
Higher molecular weight hydrocarbon compounds or oxygenates are produced from a gas comprising methane in a process comprising the steps of generating synthesis gas (“syngas”) comprising carbon monoxide and hydrogen by reaction of a gas comprising methane with steam and/or an oxidant gas comprising oxygen, producing higher molecular weight hydrocarbon compounds or oxygenates in a syngas conversion process, removing offgas comprising unreacted hydrogen and unreacted carbon monoxide from said syngas conversion process and separating cryogenically unreacted hydrogen from said offgas or from a gas derived therefrom to produce separated hydrogen product that is substantially free of unreacted carbon monoxide and a first cryogenic liquid comprising unreacted carbon monoxide. The unreacted hydrogen is preferably separated from the offgas in a liquid methane wash column.
摘要:
Higher molecular weight hydrocarbon compounds or oxygenates are produced from a gas comprising methane in a process comprising the steps of generating synthesis gas (“syngas”) comprising carbon monoxide and hydrogen by reaction of a gas comprising methane with steam and/or an oxidant gas comprising oxygen, producing higher molecular weight hydrocarbon compounds or oxygenates in a syngas conversion process, removing offgas comprising unreacted hydrogen and unreacted carbon monoxide from said syngas conversion process and separating cryogenically unreacted hydrogen from said offgas or from a gas derived therefrom to produce separated hydrogen product that is substantially free of unreacted carbon monoxide and a first cryogenic liquid comprising unreacted carbon monoxide. The unreacted hydrogen is preferably separated from the offgas in a liquid methane wash column. Two advantages of this process are that this cryogenic separation process is more efficient than known pressure swing absorption techniques and that the concentration of carbon monoxide in the separated hydrogen product is sufficiently small that the separated hydrogen product may be used in the hydrogenation of a wax fraction of the higher molecular weight hydrocarbon compounds without further purification or processing.
摘要:
Hydrogen (H2) gas and crude carbon dioxide (CO2) gas are separated from a gaseous mixture thereof. Combustible gas(es) in the crude CO2 gas are combusted to produce heat, at least a portion of which is recovered by indirect heat exchange with at least a portion of the separated H2 gas or a gas derived therefrom. The invention may be integrated with coal-fired power stations to reduce or eliminate emission of harmful components into the atmosphere.
摘要翻译:氢气(H 2 H 2)气体和粗二氧化碳(CO 2 H 2)气体与其气体混合物分离。 在粗CO 2气体中的可燃气体被燃烧以产生热量,其中至少一部分气体通过与分离的H 2 CO 2的至少一部分进行间接热交换而被回收, 气体或由其衍生的气体。 本发明可以与燃煤发电站相结合,以减少或消除有害成分向大气中的排放。
摘要:
Higher molecular weight hydrocarbon compounds or oxygenates are produced from a gas comprising methane in a process comprising the steps of generating synthesis gas (“syngas”) comprising carbon monoxide and hydrogen by reaction of a gas comprising methane with steam and/or an oxidant gas comprising oxygen, producing higher molecular weight hydrocarbon compounds or oxygenates in a syngas conversion process, removing offgas comprising unreacted hydrogen and unreacted carbon monoxide from said syngas conversion process and separating cryogenically unreacted hydrogen from said offgas or from a gas derived therefrom to produce separated hydrogen product that is is substantially free of unreacted carbon monoxide and a first cryogenic liquid comprising unreacted carbon monoxide. The unreacted hydrogen is preferably separated from the offgas in a liquid methane wash column. Two advantages of this process are that this cryogenic separation process is more efficient than known pressure swing absorption techniques and that the concentration of carbon monoxide in the separated hydrogen product is sufficiently small that the separated hydrogen product may be used in the hydrogenation of a wax fraction of the higher molecular weight hydrocarbon compounds without further purification or processing.
摘要:
SO2 and/or NOx are removed from gaseous CO2 at elevated pressure(s) in the presence of molecular oxygen and water and, when SO2 is to be removed, NOx, to convert SO2 to sulfuric acid and/or NOx to nitric acid. The sulfuric acid and/or nitric acid is/are then removed from the gaseous carbon dioxide to produce SO2-free, NOx-lean carbon dioxide gas. The invention has particular application in the removal of SO2 and/or NOx from carbon dioxide flue gas produced in an oxyfuel combustion process, for example, in a pulverized coal fired power station.
摘要翻译:在分子氧和水的存在下,在升高的压力下从气态CO 2 2中除去SO 2和/或NO x x, 当要除去SO 2的情况下,将SO 2 SO 2转化为硫酸和/或NO 2 x N 2 >硝酸。 然后从气态二氧化碳中除去硫酸和/或硝酸以产生无SO 2,无水二氧化碳气体。 本发明特别适用于在氧燃料燃烧过程中产生的二氧化碳烟道气中除去SO 2和/或NO x 2,例如在粉煤燃烧 发电厂。
摘要:
Hydrogen is liquefied by a process comprising pre-cooling hydrogen feed gas by indirect heat exchange against pressurized liquefied natural gas (“LNG”) to produce pre-cooled hydrogen feed gas and pressurized natural gas, further cooling at least a portion of said pre-cooled hydrogen feed gas by indirect heat exchange against at least one refrigerant to produce condensable hydrogen gas and expanding at least a portion of said condensable hydrogen gas to produce at least partially condensed hydrogen. One advantage of such a process is that the power consumed during liquefaction is significantly less than that consumed in existing hydrogen liquefaction processes which pre-cool hydrogen feed gas by indirect heat exchange against other refrigerants, e.g. liquid nitrogen.