Alkali regeneration process

Details Alkali regeneration process Alkali regeneration process

1979-04-18

1980-09-23

Langel, Wayne A.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

162 30R, 423183, 423207, 423637, 423641, C01D 104, D21C 1104

Patent

active

042242894

ABSTRACT:
In the regeneration of alkaline liquors as used in paper pulping, a mixed oxide compound of an alkali or alkaline earth metal oxide and an oxide of Ti, Fe, Co, Ni, or Mn is formed by burning black liquor. The burning step is carried out in a fluidized bed. The mixed oxide product is washed in cold water and subsequently treated with hot water to precipitate the oxide of Ti, Fe, Co, Ni or Mn and enable recovery of the alkaline solution for recycling.

REFERENCES:
patent: 3304249 (1967-02-01), Katz
patent: 4000264 (1976-12-01), Nagano et al.

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