Synthesis gas

Details Synthesis gas Synthesis gas

1986-02-24

1987-06-09

Doll, John

Compositions

Gaseous compositions

Nitrogen and hydrogen containing

55 25, 55 26, 55 48, 55 68, 252374, 423359, C01C 104

Patent

active

046718931

ABSTRACT:
Carbon dioxide is removed from a raw gas containing hydrogen, carbon dioxide, and intermediate boiling gas, e.g. nitrogen, to give a gas suitable for use as a synthesis gas by a wet carbon dioxide removal process, and the resultant carbon dioxide depleted gas is subjected to pressure swing adsorption (PSA) to remove some, or all, of the intermediate boiling gas and the bulk of any residual carbon dioxide. The PSA waste gas is used to strip the absorbent liquid in the regeneration of the latter in the wet carbon dioxide removal process.
The process is of particular utility in the manufacture of ammonia synthesis gas from a raw gas containing an excess of nitrogen, particularly as prepared by primary/secondary reforming/shift of a carbonaceous feedstock with partial bypass of the primary reforming stage.

REFERENCES:
patent: 4553981 (1985-11-01), Fuderer
patent: 4572829 (1986-02-01), Fuderer
patent: 4592860 (1986-06-01), Fuderer
patent: 4624841 (1986-11-01), Hidaki

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