Process and apparatus for the production of synthesis gas
First Claim
1. A process for the production of synthesis gas (“
- 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 includes solid-carbon components;
combining a stream of reactive diluent fluid with a stream of said exothermically-generated syngas product to produce a reactive mixture, the reactive diluent fluid is recycled from downstream processing;
gasifying at least a portion of the solid-carbon components in the exothermically-generated syngas product using the reactive diluent fluid;
reacting said reactive mixture in a catalytic second reactor to produce a reacted syngas product; and
endothermically reforming hydrocarbon-containing fuel gas with steam over a catalyst in a heat exchange reformer to produce a heat exchange-reformed syngas product,wherein at least a portion of the heat required in the generation of said heat exchange-reformed syngas product is obtained by recovering heat from said reacted syngas product thereby cooling said reacted syngas.
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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.
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Citations
28 Claims
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1. A process for the production of synthesis gas (“
- 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 includes solid-carbon components; combining a stream of reactive diluent fluid with a stream of said exothermically-generated syngas product to produce a reactive mixture, the reactive diluent fluid is recycled from downstream processing; gasifying at least a portion of the solid-carbon components in the exothermically-generated syngas product using the reactive diluent fluid; reacting said reactive mixture in a catalytic second reactor to produce a reacted syngas product; and endothermically reforming hydrocarbon-containing fuel gas with steam over a catalyst in a heat exchange reformer to produce a heat exchange-reformed syngas product, wherein at least a portion of the heat required in the generation of said heat exchange-reformed syngas product is obtained by recovering heat from said reacted syngas product thereby cooling said reacted syngas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
- syngas”
Specification