| 摘要 |
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 B2O3 and less than one percent trace amounts of other inorganics.
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