Purification of hydrochloric acid

Chemistry of inorganic compounds – Halogen or compound thereof – Hydrogen halide

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Details

423481, 210692, 210670, 210674, C01B 707

Patent

active

053307356

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 a polystyrenic based resin to remove silicon containing impurities and thereby allowing the hydrochloric acid to be re-used for various applications.

REFERENCES:
patent: 2695875 (1954-10-01), McGarvey
patent: 3531463 (1970-09-01), Gustafson
patent: 3720626 (1973-03-01), Benzaria et al.
patent: 4125594 (1978-11-01), Su et al.
patent: 5124362 (1992-06-01), Auerswald et al.

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