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US 9,802,820 B2Granted
Plant for hydrogen production
AssigneeStamicarbon B.V.
InventorsGaetano Iaquaniello, Barbara Cucchiella, Elena Antonetti
Life of this patent
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Abstract
The present invention relates to a plant for performing a method for hydrogen production or for performing a method of hydrogen and/or carbon dioxide production from syngas. The method comprises the steps of: (i) providing a gas stream comprising hydrogen and carbon monoxide, (ii) separating at least part of hydrogen from the stream yielding a hydrogen-depleted stream, (iii) subjecting the hydrogen-depleted stream to a water-gas shift reaction, and (iv) separating hydrogen from the stream resulting from step (iii).
Claims10
An industrial plant configured to produce hydrogen according to the method comprising
- (i) providing a gas stream comprising hydrogen and carbon monoxide;
- (ii) separating at least 70 vol. % of hydrogen from the stream by membrane separation wherein said separating comprises applying the said stream to a thin palladium-based membrane having a thickness of 1-3 μm and applying an inert sweep gas downstream of the membrane, yielding a hydrogen-depleted stream;
- (iii) subjecting the hydrogen-depleted stream to a water-gas shift reaction to obtain a resultant stream;
- and
- (iv) directly separating hydrogen from the resultant stream from step (iii);
- said plant comprising a reactor 110 for the production of syngas from hydrocarbons, wherein an outlet of the reactor 110 is connected to an inlet of a first separation module 101 which conducts the syngas past said palladium-based membrane of 1-3 μm thickness and supplies sweep gas downstream of the membrane for hydrogen separation said separation module having an outlet for hydrogen and an outlet for a hydrogen-depleted stream, wherein the outlet for the hydrogen-depleted stream is connected to an inlet of a shift reactor 103 for water gas shift reaction,
- wherein an outlet of the shift reactor 103 is directly connected to a pressure swing absorption unit 104 for hydrogen separation, and
- wherein the first separation module 101 has an outlet 12 for hydrogen permeate to a hydrogen compressor 106 and the hydrogen compressor 106 has an outlet for compressed hydrogen to the pressure swing absorption unit (PSA) 104 and the PSA 104 has an outlet 14 for hydrogen product and an outlet 15 for purge gas connected to an inlet to provide fuel to said reactor,
- wherein said method effects reduced emission of carbon oxide gases and produces hydrogen with decreased caloric value.
6 more elements
An industrial plant configured to produce hydrogen according to the method comprising
- (i) providing a gas stream comprising hydrogen and carbon monoxide;
- (ii) separating at least 70 vol. % of hydrogen from the stream by membrane separation wherein said separating comprises applying the said stream to a thin palladium-based membrane having a thickness of 1-3 μm and applying an inert sweep gas downstream of the membrane, yielding a hydrogen-depleted stream;
- (iii) subjecting the hydrogen-depleted stream to a water-gas shift reaction to obtain a resultant stream;
- and
- (iv) directly subjecting the resultant stream from step (iii) to removal of CO2;
- said plant comprising a reactor 110 for the production of syngas from hydrocarbons, wherein an outlet of reactor 110 is connected to an inlet of a first separation module 101A which conducts the syngas past a palladium-based membrane of 1-3 μm thickness and supplies sweep gas downstream of the membrane for hydrogen separation said first separation module having an outlet 12 for hydrogen and an outlet 11 for a hydrogen-depleted stream, wherein the outlet for the hydrogen-depleted stream is connected to an inlet of a shift reactor 103 for water gas shift reaction,
- wherein an outlet 13 of the shift reactor 103 is connected to a CO2 removal unit 105, provided with an outlet 19 for carbon dioxide and an outlet 15 for off-gases, and
- wherein said outlet 12 for hydrogen permeate provides said permeate to a hydrogen compressor 106, the hydrogen compressor 106 has an outlet 18 for compressed hydrogen to a pressure swing absorption unit (PSA) 107, and the PSA 107 has an outlet 14 for hydrogen product and an outlet 16 for purge gas connected to an inlet to the reactor,
- wherein said method effects reduced emission of carbon oxide gases and produces hydrogen with decreased caloric value.
6 more elements
Dependencies are inferred from the claim text.