Electrically heated carbon monooxide reactor
AssigneeHaldor TopsøE A/S
InventorsPeter Mølgaard Mortensen, Kim Aasberg-Petersen, Michael Hultqvist, Robert Klein, Kasper Emil Larsen
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Abstract
A reactor system and a process for carrying out reverse water gas shift reaction of a feedstock comprising CO2 and H2 to a first product gas comprising CO are provided, where a methanation reaction take place in parallel to the reverse water gas shift reaction, and where the heat for the endothermic reverse water gas shift reaction is provided by resistance heating.
Claims20
A reactor system for carrying out a reverse water gas shift reaction for production of a first product gas comprising CO from a feedstock comprising CO2 and H2, said reactor system comprising:
- a supply of feedstock comprising CO2 and H2;
- a structured catalyst comprising a macroscopic structure of an electrically conductive material and a catalytically active material capable of catalysing both the reverse water gas shift reaction and a methanation reaction;
- the structured catalyst arranged for being operated under such temperature and pressure that both the reverse water gas reaction and the methanation reaction take place;
- a pressure shell housing said structured catalyst, said pressure shell comprising an inlet for letting in said feedstock and an outlet for letting out product gas, wherein said inlet is positioned so that said feedstock enters said structured catalyst in a first end of said structured catalyst and said product gas exits said structured catalyst from a second end of said structured catalyst;
- a heat insulation layer between said structured catalyst and said pressure shell;
- at least two conductors electrically connected to said structured catalyst and to an electrical power supply placed outside said pressure shell, wherein said electrical power supply is dimensioned to heat at least part of said structured catalyst to a temperature of at least 500° C. by passing an electrical current through said macroscopic structure, wherein said at least two conductors are connected to the structured catalyst at a position on the structured catalyst closer to said first end of said structured catalyst than to said second end of said structured catalyst, and wherein the structured catalyst is constructed to direct an electrical current to run from one conductor substantially to the second end of the structured catalyst and return to a second end of said at least two conductors;
- an outlet for a first product gas comprising CO.
A process for converting a feedstock comprising CO2 and H2 to a first product gas comprising CO in a reactor system comprising a pressure shell housing a structured catalyst comprising a macroscopic structure of electrically conductive material and a catalytically active material;
- wherein said reactor system is provided with heat insulation between said structured catalyst and said pressure shell;
- said process comprising the steps of:
- providing a pressurized feedstock;
- supplying said pressurized feedstock to said pressure shell through an inlet positioned so that said feedstock enters said structured catalyst in a first end of said structured catalyst;
- using a catalytically active material capable of catalysing both the reverse water gas shift reaction and a methanation reaction;
- allowing the feedstock to undergo a reverse water gas shift reaction over the structured catalyst under such temperature and pressure that both the reverse gas shift reaction and the methanation reaction take place;
- outletting a product gas from said pressure shell, wherein said product gas exits said structured catalyst from a second end of said structured catalyst;
- supplying electrical power via electrical conductors connecting an electrical power supply placed outside said pressure shell to said structured catalyst, allowing an electrical current to run through said macroscopic structure, thereby heating at least part of the structured catalyst to a temperature of at least 500° C., wherein said at least two conductors are connected to the structured catalyst at a position on the structured catalyst closer to said first end of said structured catalyst than to said second end of said structured catalyst, and wherein the structured catalyst is constructed to direct an electrical current to run from one conductor substantially to the second end of the structured catalyst and return to a second of said at least two conductors, thereby heating at least part of the structured catalyst to a temperature sufficient for said feedstock to undergo the reverse water gas shift reaction over the structured catalyst,
- outletting a first product gas comprising CO from the reactor system.
Dependencies are inferred from the claim text.