Process for producing anhydrous sodium carbonate

Details Process for producing anhydrous sodium carbonate Process for producing anhydrous sodium carbonate

1984-09-14

1987-03-24

Straub, Gary P.

Chemistry of inorganic compounds

Carbon or compound thereof

Oxygen containing

423425, 423427, 423206T, C01D 700, C01D 714, C01D 737

Patent

active

046524371

ABSTRACT:
A process for producing anhydrous sodium carbonate by the pyrolysis of wet sodium bicarbonate, which comprises (a) a step of forming a complex salt selected from the group consisting of Na.sub.2 CO.sub.3.3NaHCO.sub.3 and Na.sub.2 CO.sub.3.NaHCO.sub.3.2H.sub.2 O by the pyrolysis of wet sodium bicarbonate under such temperature and pressure conditions that said complex salt is stable, and (b) a step of forming anhydrous sodium carbonate by the pyrolysis of said complex salt under such temperature and pressure conditions that the anhydrous sodium carbonate is stable.

REFERENCES:
patent: 439330 (1890-10-01), Staub
patent: 1503481 (1924-08-01), Cocksedge
patent: 1583663 (1926-05-01), Sundstrum et al.
patent: 1911794 (1933-05-01), Britton
patent: 2038025 (1936-04-01), Cunningham et al.
patent: 3028215 (1962-04-01), Frint
patent: 3328130 (1967-06-01), Gancy
patent: 3944500 (1976-03-01), Gancy et al.
patent: 3984527 (1976-10-01), Gancy et al.
patent: 4252781 (1981-02-01), Fujita et al.

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