Method and system for producing carbon dioxide, purified hydrogen and electricity from a reformed process gas feed

문헌번호

US 10297849 B2 (2019.05.21)

출원번호

15/119866 (2015.02.19)

출원인

EZ-ENERGIES GMBH

발명자

Stefan Diethelm | Alberto Ravagni | Olivier Bucheli

Current IPC

(Main)

H01M-008/06

우선권번호

-

요약

Method and system for producing CO2, purified hydrogen and electricity from a reformed process gas feed using a solid oxide fuel cell. The method having the steps of: introducing the reformed process gas into the solid oxide fuel cell; converting hydrogen and CO of the reformed process gas in combination with oxygen into an anode off-gas including steam, CO2 and unconverted process gas; introducing the anode off-gas into a high temperature water gas shift reactor; in the high temperature water-gas shift reactor, converting CO and steam into CO2 and hydrogen, introducing the gas exiting the high temperature water-gas shift reactor into a low temperature water-gas shift membrane reactor, in the low temperature water-gas shift membrane reactor, converting CO and steam into CO2 and hydrogen, whereby the low temperature water-gas shift membrane reactor comprises a hydrogen pump producing purified hydrogen on a permeate side, while removing hydrogen from a feed side.

대표청구항

1. A method for producing carbon dioxide, purified hydrogen and electricity from a reformed process gas feed using a solid oxide fuel cell SOFC, the method comprising the steps of: introducing the reformed process gas into an anode side of the solid oxide fuel cell;in the solid oxide fuel cell, introducing air into a cathode side of the solid oxide fuel cell and in the anode side converting hydrogen and carbon monoxide of the reformed process gas in combination with oxygen into an anode off-gas comprising steam, carbon dioxide and unconverted process gas;wherein:introducing the anode off-gas into a high temperature water gas shift reactor;in the high temperature water-gas shift reactor, converting carbon monoxide and steam into carbon dioxide and hydrogen,introducing the gas exiting the high temperature water-gas shift reactor into a low temperature water-gas shift membrane reactor, andin the low temperature water-gas shift membrane reactor, converting carbon monoxide and steam into carbon dioxide and hydrogen, whereby the low temperature water-gas shift membrane reactor comprises a hydrogen pump that produces purified hydrogen on a permeate side which is supplied to a purified hydrogen outlet, while removing hydrogen from a feed side, so that the anode off-gas is depleted of hydrogen and carbon monoxide to create a carbon dioxide rich gas stream comprising mainly carbon dioxide and steam;wherein the solid oxide fuel cell SOFC is controlled to operate with a fuel utilization (FU) in the range of 0% to 90%, depending on a demanded amount of purified hydrogen and carbon dioxide to be produced.

WIPS 패밀리

AU2015220747B2 | CA2946939A1 | CN106463743B | EP3108532B1 | PL3108532T3 | RU0002661930C2 | US10297849B2 | WOWO2015-124183A1 | WOWO2015-124700A1