Ammonium nitrate particulate abatement process

Details Ammonium nitrate particulate abatement process Ammonium nitrate particulate abatement process

1978-08-21

1980-09-09

Nozick, Bernard

Chemistry of inorganic compounds

Nitrogen or compound thereof

Oxygen containing

55 90, 55 97, 55527, 4232155, 55523, C01C 118

Patent

active

042217709

ABSTRACT:
In a process for removing particulate ammonium nitrate from the steam aerosol effluent from a reactor in which nitric acid is neutralized with ammonia, wherein said steam aerosol effluent is scrubbed with a water spray to produce suspended droplets of aqueous ammonium nitrate solution and said droplets are then removed from the effluent by passage through a fibrous mat, an improvement with respect to durability of the fibrous mat and efficiency of droplet removal is obtained by passing the effluent stream through a mat consisting of fibers of average diameter between 5 and 20 microns which have the following composition by weight: between 40 and 50 percent alumina, from 45 to 55 percent silica, less than 6 percent zirconia, less than 1.5 percent B.sub.2 O.sub.3 and less than one percent trace amounts of other inorganics.

REFERENCES:
patent: 2619405 (1952-11-01), Greer et al.
patent: 2821261 (1958-01-01), Vixler et al.
patent: 3535852 (1970-10-01), Hirs
patent: 3540190 (1970-11-01), Brink, Jr.
patent: 3861889 (1975-01-01), Takae et al.

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