Recovery of soda values and heat from sodium carbonate crystalli

Details Recovery of soda values and heat from sodium carbonate crystalli Recovery of soda values and heat from sodium carbonate crystalli

1975-06-17

1977-08-02

Vertiz, O. R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkali metal

23302T, 423206T, 423421, C01D 700

Patent

active

040396177

ABSTRACT:
Soda values from the crystallizer purge liquor from the process of making sodium carbonate from trona are recovered by cooling the purge liquor to temperature below about 32.degree. C. to effect crystallization of sodium carbonate decahydrate crystals therefrom, and recovering the decahydrate crystals. Optionally, the decahydrate crystals may be heated to convert them to sodium carbonate monohydrate crystals. Sensible heat of the crystallizer purge liquor and/or sensible heat and latent heat of vaporization of the sodium carbonate process crystallizer vapors may be recovered by using it to heat the sodium carbonate decahydrate crystals to convert them to sodium carbonate monohydrate crystals.

REFERENCES:
patent: 1759361 (1930-05-01), Miller et al.
patent: 1853275 (1932-04-01), Houghton et al.
patent: 1877368 (1932-09-01), Seyer
patent: 2049249 (1936-07-01), Cunningham
patent: 2161711 (1939-06-01), Keep et al.
patent: 3498744 (1970-03-01), Frint et al.
patent: 3933977 (1976-01-01), Hardl et al.

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