Apparatus for removing nitric oxides from processing exhaust gas

Details Apparatus for removing nitric oxides from processing exhaust gas Apparatus for removing nitric oxides from processing exhaust gas

1976-03-19

1978-05-02

Richman, Barry S.

Chemistry: physical processes

Physical processes

Crystallization

23288F, 23288FB, 423239, 423392, B01J 804, C01B 2140

Patent

active

040872505

ABSTRACT:
Exhaust gases containing residual nitric oxide constituents from a processing operation are maintained at an elevated pressure, heated to from 260.degree. C. to 340.degree. C. in a separate heat exchanger, and subjected to multi-stage catalytic reduction with ammonia to produce purified exhaust gases. The pressure of the thus purified exhaust gases is then relieved in an expansion turbine.

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