Process for producing sadist bicarbonate.

摘要

A process for producing sadist bicarbonate from a current carrying sadist carbonate (A), a part of which is generated by a crystallizer of sodium carbonate, it said stream carrying sadist carbonate (A) at least 2% by weight comprising of sadist chloride and / or sadist sulfate, comprising the following steps: a) mixing the stream takes sadist carbonate (a) with part of a stream (B) to produce a stream (C), b) bicarbonatar current (C) with a gas (D) comprising CO {sub, 2} to produce a slurry (E) comprising crystals (F), said crystals (F) crystals of sodium bicarbonate, c) comprises separating the one hand the aqueous suspension ( E) in order to obtain crystals (F) comprising crystals of sodium bicarbonate, and secondly aqueous mother (G), d) water partially desbicarbonatar aqueous mother liquor (G) and removing part of the water for the current (B) and an optional gas (H), e) recycling at least part of the stream (B) to step a), f) removing the remainder (I) of the current (B) or part of the aqueous mother liquor (G) to be processed.