No.sub.x destruction in sulphuric acid

Details No.sub.x destruction in sulphuric acid No.sub.x destruction in sulphuric acid

1997-06-17

1999-09-21

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423522, 423523, C01B 1790, C01B 1794

Patent

active

059550503

ABSTRACT:
A process is provided for the destruction of nitrogen oxides in sulfuric acid by adding a reducing agent, such as hydrazine, sulfamic acid or urea, and an oxidizing agent, such as hydrogen peroxide or persulfates, into the nitrogen oxides contaminated sulfuric acid. The nitrogen oxides contaminated sulfuric acid is treated at a temperature between 15.degree. C. and 100.degree. C.

REFERENCES:
patent: 4376105 (1983-03-01), Matuda et al.
patent: 5026535 (1991-06-01), Jonsson et al.
patent: 5030436 (1991-07-01), Steadman et al.

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