PROCESS AND APPARATUS FOR THE PRODUCTION OF SYNTHESIS GAS
First Claim
1. A process for the production of syngas comprising carbon monoxide and molecular hydrogen, said process comprising:
- exothermically reacting hydrocarbon-containing fuel with an oxidant gas comprising molecular oxygen in a first reactor to produce an exothermically-generated syngas product, the exothermically-generated syngas product having a first concentration of carbon monoxide;
combining an effluent stream of the exothermically-generated syngas product with reactive diluent fluid with to produce a mixture comprising cooled exothermically-generated syngas product and reactive diluent fluid, the mixture including carbon dioxide, molecular hydrogen and solid carbon particles;
reacting the carbon dioxide and the molecular hydrogen in the mixture over a catalyst in a second reactor to produce reacted syngas product having a second concentration of carbon monoxide greater than the first concentration; and
gasifying solid carbon particles in the mixture with at least one other component in the mixture to produce reacted syngas product.
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Accused Products
Abstract
Reactive diluent fluid (22) is introduced into a stream of synthesis gas (or “syngas”) produced in a heat-generating unit such as a partial oxidation (“POX”) reactor (12) to cool the syngas and form a mixture of cooled syngas and reactive diluent fluid. Carbon dioxide and/or carbon components and/or hydrogen in the mixture of cooled syngas and reactive diluent fluid is reacted (26) with at least a portion of the reactive diluent fluid in the mixture to produce carbon monoxide-enriched and/or solid carbon depleted syngas which is fed into a secondary reformer unit (30) such as an enhanced heat transfer reformer in a heat exchange reformer process. An advantage of the invention is that problems with the mechanical integrity of the secondary unit arising from the high temperature of the syngas from the heat-generating unit are avoided.
28 Citations
15 Claims
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1. A process for the production of syngas comprising carbon monoxide and molecular hydrogen, said process comprising:
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exothermically reacting hydrocarbon-containing fuel with an oxidant gas comprising molecular oxygen in a first reactor to produce an exothermically-generated syngas product, the exothermically-generated syngas product having a first concentration of carbon monoxide; combining an effluent stream of the exothermically-generated syngas product with reactive diluent fluid with to produce a mixture comprising cooled exothermically-generated syngas product and reactive diluent fluid, the mixture including carbon dioxide, molecular hydrogen and solid carbon particles; reacting the carbon dioxide and the molecular hydrogen in the mixture over a catalyst in a second reactor to produce reacted syngas product having a second concentration of carbon monoxide greater than the first concentration; and gasifying solid carbon particles in the mixture with at least one other component in the mixture to produce reacted syngas product. - View Dependent Claims (2, 3, 4)
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5. Apparatus for the production of syngas, comprising:
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a first reactor configured to exothermically react hydrocarbon-containing fuel with an oxidant gas including molecular oxygen to produce an exothermically-generated syngas product; a first conduit configured to remove an effluent stream of the exothermically-generated syngas product from the first reactor; a combining element configured to combine reactive diluent fluid with the effluent stream to produce a reactive mixture; a second reactor configured to react components of the mixture to produce a reacted syngas product; a second conduit configured to feed a stream of reacted syngas product from the second reactor to a heat exchange reformer; and the heat exchange reformer configured to endothermically reform hydrocarbon-containing fuel gas with steam over a catalyst to produce a heat exchange-reformed syngas product, wherein the heat exchange reformer uses heat generated in the first reactor to drive at least a portion of the reforming. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. Apparatus for the production of syngas, comprising:
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a first reactor configured to exothermically react hydrocarbon-containing fuel with an oxidant gas to produce an exothermically-generated syngas product, the oxidant gas including molecular oxygen; a second reactor; a conduit configured to feed an effluent stream of the exothermically generated syngas product from the first reactor to the second reactor; an element configured to cool the exothermically-generated syngas product by combining reactive diluent gas with the effluent stream, the mixture including carbon dioxide and solid carbon particles; a reverse water gas shift reaction zone in the second reactor configured to react the carbon dioxide and the molecular hydrogen in the mixture over a catalyst, the reverse water gas shift reaction increases a carbon monoxide concentration of the mixture; and a gasification reaction zone in the second reactor configured to react the carbon particles with at least one other component in the mixture, the gasification reaction decreases a concentration of the solid carbon. - View Dependent Claims (13, 14, 15)
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Specification