Polygeneration production of hydrogen for use in various industrial processes
First Claim
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1. A method for the production of hydrogen, the method comprising the steps of:
- supplying a hydrocarbon or carbonaceous feedstock to a torrefaction or pyrolysis process to produce a synthesis gas, the synthesis gas comprising carbon dioxide, carbon monoxide, and hydrogen;
supplying the synthesis gas to a first reactor, the first reactor comprising a catalyst and being configured to convert at least a portion of the carbon monoxide to carbon dioxide and produce a modified synthesis gas;
supplying the modified synthesis gas to a second reactor, the second reactor comprising a catalyst and being configured to convert remaining carbon monoxide to carbon dioxide to produce a carbon dioxide-rich synthesis gas; and
supplying the carbon dioxide-rich synthesis gas from the second reactor to a first condenser to remove water and produce a gas stream comprising hydrogen and carbon dioxide; and
supplying the hydrogen and carbon dioxide stream to a pressure swing adsorption process to produce a pure hydrogen stream and pressure swing adsorption tail gas.
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Abstract
Provided are processes for production of hydrogen to be used in various industrial processes, including in processes for production of ammonia and urea. Included are polygeneration processes that result in ultra-low emissions.
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18 Claims
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1. A method for the production of hydrogen, the method comprising the steps of:
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supplying a hydrocarbon or carbonaceous feedstock to a torrefaction or pyrolysis process to produce a synthesis gas, the synthesis gas comprising carbon dioxide, carbon monoxide, and hydrogen; supplying the synthesis gas to a first reactor, the first reactor comprising a catalyst and being configured to convert at least a portion of the carbon monoxide to carbon dioxide and produce a modified synthesis gas; supplying the modified synthesis gas to a second reactor, the second reactor comprising a catalyst and being configured to convert remaining carbon monoxide to carbon dioxide to produce a carbon dioxide-rich synthesis gas; and supplying the carbon dioxide-rich synthesis gas from the second reactor to a first condenser to remove water and produce a gas stream comprising hydrogen and carbon dioxide; and supplying the hydrogen and carbon dioxide stream to a pressure swing adsorption process to produce a pure hydrogen stream and pressure swing adsorption tail gas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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