Purification of hydrochloric acid

Details Purification of hydrochloric acid Purification of hydrochloric acid

1993-01-21

1998-06-16

Nguyen, Ngoc-Yen

Chemistry of inorganic compounds

Halogen or compound thereof

Hydrogen halide

210670, C01B 0707

Patent

active

057665656

ABSTRACT:
A process is described by which numerous waste or by-product aqueous hydrochloric acid streams can be purified by contacting the aqueous hydrochloric acid with activated carbon to remove silicon containing impurities and thereby allowing the hydrochloric acid to be re-used for various applications.

REFERENCES:
patent: 1822372 (1931-08-01), Putnam
patent: 3720626 (1973-03-01), Benzaria et al.
patent: 4187195 (1980-02-01), Kennedy
patent: 4558022 (1985-12-01), Farmerie
patent: 5202106 (1993-04-01), Vanlautem
Encyclopedia of Chemical Technology, Third Edition, vol. 4, p. 561: by: Kirk-Othmer, 1980 (no month).

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