Method for the recovery of ammonia from liquor from the filters

Chemistry of inorganic compounds – Nitrogen or compound thereof – Ammonia or ammonium hydroxide

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423190, 423357, 423421, C01C 102

Patent

active

040617181

ABSTRACT:
A method for the recovery of ammonia from liquor from the filters of ammonia-soda plants, which contains free ammonia and ammonium chloride. In this method the liquor is heated to release the free ammonia, and the remaining liquor is then treated successively in a prelimer with lime in an amount insufficient to decompose the whole part of the ammonium chloride and in a still with steam and an alkali metal hydroxide in an amount sufficient to decompose the remaining part of ammonium chloride.

REFERENCES:
patent: 1118332 (1914-11-01), Clemm
patent: 1838587 (1931-12-01), Sperr
patent: 3329479 (1967-07-01), Hustinx

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