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US 11,952,277 B2Granted
Conversion of solid waste into syngas and hydrogen
AssigneeRwe Generation Nl B.V.
InventorJohannes Theodorus Gerardus Marie Eurlings
Life of this patent
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Abstract
The method and plant (1) for conversing solid recovered fuel pellets (117) made from municipal solid waste (103) allow the transformation of the municipal solid waste (103) into hydrogen with a high yield instead of landfilling or incinerating the municipal solid waste (103). The hydrogen rich product gas stream (601) can be used as feedstock for chemical reactions or for storing energy in a releasable manner.
Claims9
A method for processing solid recovered fuel pellets (117), comprising the following steps:
- a) torrefaction of the pellets (117) at a torrefaction temperature of 250 to 300° C. generating charred pellets (201) and torrefaction gas (202);
- b) milling the charred pellets (201) in a first milling step to coarsely milled charred pellets (207);
- c) removing metal residues (206) from the coarsely milled charred pellets (207);
- d) milling the coarsely charred pellets (207) to finely milled charred pellets (209);
- e) gasifying the finely milled charred pellets (209) to raw syngas (301) in an entrained flow gasifying process;
- f) performing CO shift reactions to the raw syngas (301) creating shifted syngas (501);
- g) removing carbon dioxide and hydrogen sulfide from the shifted syngas (501) creating a syngas;
- and
- h) generating a product gas stream (601) rich in hydrogen by purifying the syngas.
6 more elements
Dependencies are inferred from the claim text.