Process and apparatus for the production of synthesis gas
AssigneeAir Products and Chemicals, Inc.
InventorsRodney John Allam, Rebecca Cotton
Life of this patent
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Abstract
A process for the production of synthesis gas from a hydrocarbon fuel and steam and/or oxygen gas wherein at least part of any steam requirement is provided by heat exchange against exhaust gas from a gas turbine driving an air separation unit supplying at least part of any oxygen requirement for the synthesis gas production. The process is particularly applicable when the synthesis gas is used to prepare a synfuel by methanol synthesis or a Fischer-Tropsch process.
Claims17
Apparatus for the production of synthesis gas, said apparatus comprising:
- a synthesis gas generation system for reacting hydrocarbon fuel gas with steam and/or oxygen gas to produce a synthesis gas product stream;
- compressing means for compressing an oxidant gas to produce compressed oxidant gas;
- combusting means for combusting combustion fuel gas in the presence of at least a portion of said compressed oxidant gas to produce combustion product gas;
- expanding means for expanding said combustion product gas to produce power and expanded combustion product gas;
- heat exchange means for heating a first steam stream against a stream of expanded combustion product gas to produce a heated first steam stream;
- conduit means for supplying the stream of expanded combustion product gas from the expanding means to the first heat exchange means;
- conduit means for supplying at least a portion of the heated first steam stream from the first heat exchange means to the synthesis gas generation system;
- an air separation unit (“ASU”);
- means for transferring at least a portion of the power produced by the expanding means to the ASU;
- and
- conduit means for supplying at least a portion of the oxygen gas from the ASU to the synthesis gas generation system.
Apparatus for the production of synthesis gas, said apparatus comprising:
- a POX in which hydrocarbon fuel gas is partially oxidized in the presence of oxygen gas to produce a first intermediate synthesis gas product;
- and
- a GHR in combination with the POX in which hydrocarbon fuel gas is reformed with steam to produce a second intermediate synthesis gas product which is combined with the first intermediate synthesis gas product to form a synthesis gas product stream;
- a gas turbine in which an oxidant gas is compressed to produce compressed oxidant gas, a combustion fuel gas is combusted in the presence of at least a portion of said compressed oxidant gas to produce combustion product gas and said combustion product gas is expanded to produce power and expanded combustion product gas;
- heat exchange means for heating a first steam stream against a stream of expanded combustion product gas to produce a heated first steam stream;
- conduit means for supplying the stream of expanded combustion product gas from the expanding means to the first heat exchange means;
- conduit means for supplying at least a portion of the heated first steam stream from the first heat exchange means to the synthesis gas generation system;
- an air separation unit (“ASU”);
- means for transferring at least a portion of the power produced by the gas turbine to the ASU;
- and
- conduit means for supplying at least a portion of the oxygen gas from the ASU to the synthesis gas generation system.
Dependencies are inferred from the claim text.