C - Chemistry – Metallurgy – 01 – C
Patent
C - Chemistry, Metallurgy
01
C
C01C 1/02 (2006.01) C01C 1/04 (2006.01)
Patent
CA 2318649
The invention relates to a process for producing ammonia in a recycle circuit stream which comprises at least hydrogen, nitrogen and at least a portion of the ammonia formed as a product, characterized in that the ammonia is abstracted from the recycle circuit stream by means of a membrane unit. The invention further relates to an apparatus for producing ammonia in accordance with the process of any one of the preceding claims, said apparatus comprising at least a recycle circuit for allowing a recycle circuit stream to circulate, which recycle circuit effectively incorporates: a) at least one reactor provided with means for producing ammonia starting from hydrogen and nitrogen; b) at least one membrane unit provided with a membrane which is permeable at least to ammonia; c) means for feeding a feed stream into the recycle circuit (stream); d) means for abstracting a product stream from the recylce circuit (stream); e) optionally one or more elements, known per se, of a recycle circuit for preparing ammonia starting from a nitrogen- and hydrogen-containing feed; said apparatus being characterized in that the membrane unit (b) is provided in such a way in the recycle circuit that the recycle circuit stream can be passed along one side of the membrane present in the membrane unit; and in that the means (c) for feeding the feed into the recycle circuit are connected to the membrane unit (b) in such a way that the feed can be passed along the other side of the membrane present in the membrane unit before the feed is fed into the recycle circuit.
de Wit Jacobus Johannes
Riezebos Arend
Continental Engineering B.v.
Mccarthy Tetrault Llp
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