Process for elimination of waste material during manufacture of

Details Process for elimination of waste material during manufacture of Process for elimination of waste material during manufacture of

1992-10-09

1994-02-22

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423238, 558319, 558320, C01C 300

Patent

active

052884732

ABSTRACT:
A process for the substantial or complete elimination of ammonium sulfate generated during the production of acrylonitrile by the direct ammoxidation of propylene/propane, ammonia and an oxygen containing gas (e.g. air) over a fluid bed catalyst wherein the improvement comprises introducing an organic compound(s) into said reactor at a location where the compound(s) reacts with substantially all of the excess ammonia without affecting the acrylonitrile yield. Preferably, the organic compound is methanol which is introduced into the reactor at below its coking temperature.

REFERENCES:
patent: 3911089 (1975-10-01), Shiraishi et al.
Patent Application No. 1978-35,232 (Japanese), Oct. 2, 1979.
Patent Application No. 1974-87,474 (Japanese)--51-016615, Apr. 17, 1979.
Derwent World Patent Index, JP 51 16615.

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