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1. (WO2002079083) METHOD FOR PRODUCING AMMONIA FROM METHANOL

Pub. No.:    WO/2002/079083    International Application No.:    PCT/EP2002/002008
Publication Date: Fri Oct 11 01:59:59 CEST 2002 International Filing Date: Wed Feb 27 00:59:59 CET 2002
IPC: C01B 3/02
C01B 3/32
C01B 3/52
C01B 3/56
C01B 3/58
C01C 1/04
Applicants: MG TECHNOLOGIES AG
DAVEY, William
Inventors: DAVEY, William
Title: METHOD FOR PRODUCING AMMONIA FROM METHANOL
Abstract:
The invention relates to a method for catalytically producing ammonia from a nitrogen-hydrogen mixture. A feed mixture in the vapour state, consisting of between 30 and 60 vol. % of methanol and between 40 and 70 vol. % of water vapour and having a water vapour:methanol volume ratio of 1:3, is introduced at a pressure of between 30 and 200 bar via at least one bed of a cracking catalyst (5a, 5b), the temperature of the catalyst bed being between 200 and 500 °C. A first gas mixture is extracted from the catalyst bed, said first gas mixture consisting of, in the dry state, between 40 and 80 vol. % of H2 and between 10 and 30 vol. % of CO2. The first gas mixture (7) is cooled, the Co2 (14) is removed by means of gas purification and a second gas mixture is produced - said second gas mixture consisting of at least 95 vol. % of nitrogen and hydrogen - and is supplied (25) to an ammonia synthesis, in the form of a synthesis gas, in order to catalytically produce ammonia.