Apparatus for treating spent hydrochloric acid

Details Apparatus for treating spent hydrochloric acid Apparatus for treating spent hydrochloric acid

1978-11-20

1980-06-24

Marcus, Michael S.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

Responsive to liquid level

422187, 422189, 422234, 423144, C01B 708, B01J 100

Patent

active

042094895

ABSTRACT:
Apparatus for treating spent hydrochloric acid from a galvanizing pickling bath wherein the spent acid is neutralized with ammonium hydroxide and aerated to form a solution of ammonium chloride with suspended iron oxides and hydroxides. The ammonium chloride solution, freed of the magnetite, is usable as a recycle material in the galvanizing process.

REFERENCES:
patent: 2192094 (1940-02-01), Moore
patent: 2416744 (1947-03-01), Francis
patent: 2761882 (1956-09-01), Halse et al.
patent: 2939763 (1960-06-01), Cooper
patent: 2955123 (1960-10-01), Favis
patent: 3335158 (1967-08-01), Goldsmith
patent: 3495945 (1970-02-01), Allison

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