AMMONIA SYNTHESIS PROCESS AUTOMATIC CONTROL METHOD Russian patent published in 1995 - IPC

Abstract SU 1774598 A1

FIELD: production of mineral fertilizers. SUBSTANCE: method involves varying flow rate of circulating gas through cold by-pass valve onto catalyst layer; measuring ammonia concentration at synthesis column inlet and outlet ends; regulating extent of opening of cold by-pass valve depending on growth of ammonia concentration at inlet and outlet ends of ammonia synthesis column. EFFECT: increased efficiency of method. 1 dwg

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SU 1 774 598 A1

Authors

Machekhin G.N.

Mitrofanov V.A.

Obukhov L.V.

Dates

1995-02-27—Published

1990-07-02—Filed