Recovering chemicals from spent pulp liquors

Details Recovering chemicals from spent pulp liquors Recovering chemicals from spent pulp liquors

1986-01-27

1987-12-01

Bashore, S. Leon

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With regeneration, reclamation, reuse, recycling or...

162 3011, 423207, 423DIG3, D21C 1112

Patent

active

047102691

ABSTRACT:
The present invention relates to a method and means of increasing capacity and improving the chemical recovery process when using a conventional soda recovery boiler for recovering chemicals out of spent sulphate liquors. The spent sulphate liquor is supplied in full or in part to a liquor gasifier (8) while external energy independent of combustion is simultaneously supplied (at 16, 17). The temperature and oxygen potential are carefully controlled independently of each other by means of controlled supply of the energy. The product thus obtained is thereafter introduced in full or in part into a soda recovery boiler (1).

REFERENCES:
patent: 3666619 (1972-05-01), Mailhos et al.
patent: 3674630 (1972-07-01), Copeland
patent: 4011129 (1977-03-01), Tomlinson, II
patent: 4135968 (1979-01-01), Dehaas
patent: 4439272 (1984-03-01), Nguyen
patent: 4601786 (1986-07-01), Santen et al.

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