Process for synthesis gas production

Details Process for synthesis gas production Process for synthesis gas production

2011-03-01

2011-03-01

Mayes, Melvin C (Department: 1732)

Chemistry of inorganic compounds

Nitrogen or compound thereof

Ammonia or ammonium hydroxide

C423S210000, C423S351000, C423S352000, C423S387000, C422S206000

Reexamination Certificate

active

07897130

ABSTRACT:
A process for obtaining a synthesis gas (GS) at a predetermined high pressure corresponding to the ammonia synthesis pressure, in which there are hydrogen and nitrogen in a 3/1 molar ratio, comprising the steps of feeding a continuous flow of natural gas to a primary reforming step (RP) with steam and to a subsequent secondary reforming step (RS) with excess air obtaining a gaseous flow (GF) comprises hydrogen, excess nitrogen with respect to said molar ratio, undesired substances such as impurities and inerts and subjects said gaseous flow to a purification step comprising cryogenic rectification in a separator unit (S) obtaining a continuous flow of synthesis gas (GS) comprising hydrogen and nitrogen in a 3/1 molar ratio, and to a subsequent compression step up to a pressure value required for ammonia synthesis.

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