Method of generating clean syngas
AssigneeThermoChem Recovery International, Inc.
InventorsRavi Chandran, Daniel Michael Leo, Shawn Robert Freitas, Dave G. Newport, Hamilton Sean Michael Whitney, Daniel A. Burciaga
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Abstract
A system and method for processing unconditioned syngas first removes solids and semi-volatile organic compounds (SVOC), then removes volatile organic compounds (VOC), and then removes at least one sulfur containing compound from the syngas. Additional processing may be performed depending on such factors as the source of syngas being processed, the products, byproducts and intermediate products desired to be formed, captured or recycled and environmental considerations.
Claims13
A method of generating a clean syngas, the method comprising:
- processing carbonaceous material by steam reforming with a recycled carbon dioxide stream as vapor purges to yield a first syngas stream;
- performing hydrocarbon reforming on the first syngas stream to yield a second syngas stream;
- cooling the second syngas stream to generate steam and to yield a cooled syngas stream;
- compressing the cooled syngas stream to yield a compressed syngas stream;
- removing one or more metals, ammonia, and/or hydrogen cyanide from the compressed syngas stream;
- performing sulfur polishing on the compressed syngas stream;
- removing carbon dioxide from the compressed syngas stream to yield a clean syngas stream;
- and
- recycling at least a portion of the removed carbon dioxide to the steam reforming step.
Dependencies are inferred from the claim text.