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Autothermal reactor and reforming exchanger arrangement for hydrogen production
Autothermal reactor and reforming exchanger arrangement for hydrogen production
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机译：用于制氢的自热反应器和重整交换器装置
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摘要
Low-energy, low-capital hydrogen production is disclosed. A reforming exchanger is placed in parallel with an autothermal reformer (ATR) to which are supplied a preheated steam-hydrocarbon mixture. An air-steam mixture is supplied to the burner/mixer of the ATR to obtain a syngas effluent at 650 DEG -1050 DEG C. The effluent from the ATR is used to heat the reforming exchanger, and combined reformer effluent is shift converted and separated into a mixed gas stream and a hydrogen-rich product stream by membrane separation. High capital cost equipment such as steam-methane reformer and air separation plant are not required. The process for producing hydrogen, particularly comprises: catalytically reforming a first hydrocarbon portion with steam and air in an autothermal reactor to produce a first syngas effluent at a temperaturefrom 650 DEG -1050 DEG C; supplying the first syngas effluent to a reforming exchanger; passing a second hydrocarbon portion with steam through a catalyst zone in the reforming exchanger to form a second syngas effluent; discharging the second syngas effluent from the catalyst zone adjacent the inlet to form a syngas admixture with the first syngas effluent; passing the admixture across the catalyst zone in indirect heat exchange therewith to cool the admixture and heat the catalyst zone; collecting the cooled admixture from an outlet of thereforming exchanger; shift converting the admixture to obtain a carbon dioxide-rich gas stream lean in carbon monoxide; and separating the carbon dioxide-rich gas stream to form a hydrogen-lean, mixed gas stream comprising nitrogen and carbon dioxide and a hydrogen-rich product stream.
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