Process for removing a residue containing sodium sulphate

Details Process for removing a residue containing sodium sulphate Process for removing a residue containing sodium sulphate

1989-10-13

1992-08-04

Straub, Gary P.

Chemistry of inorganic compounds

Miscellaneous process

423166, 423193, 423551, 423555, 423DIG20, 23302T, 166275, 166306, 299 5, 405128, A62D 300, B09B 500, E21C 4116, C01F 1146

Patent

active

051357348

ABSTRACT:
Process for removing an industrial residue containing sodium sulphate, in which the sodium sulphate in the residue 7 is treated with a calcium salt 12 to precipitate calcium sulphate 13, which is sent to a rock salt deposit 15, from which an aqueous solution of sodium chloride 16 is withdrawn.
The process applies to the residues from the desulphurization of fumes by means of sodium bicarbonate.

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Te-Pang Hou, Ph. D., "Manufacture of Soda", Second Edition, Hafner Publishing Company, p. 237 (1969).

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