Production of sodium bicarbonate by reversion of soda-type feed

Details Production of sodium bicarbonate by reversion of soda-type feed Production of sodium bicarbonate by reversion of soda-type feed

1985-07-16

1987-03-31

Straub, Gary P.

Chemistry of inorganic compounds

Carbon or compound thereof

Oxygen containing

423206T, 423186, 423189, C01D 740

Patent

active

046542043

ABSTRACT:
Sodium bicarbonate is produced by introducing solid sodium carbonate, sodium sesquicarbonate, and/or Wegscheider's salt into a reversion slurry, saturated with respect to bicarbonate and containing at least 10 wt. % solids, to effect rapid and complete conversion of the feed solids to crystalline sodium bicarbonate which is recovered from the slurry. Carbon dioxide is introduced into the reversion liquor to maintain its composition at a relatively constant value, preferably in a region of the Na.sub.2 CO.sub.3 --NaHCO.sub.3 --H.sub.2 O phase diagram that minimizes the equilibrium partial pressure of CO.sub.2 vapor above such liquor.

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