Recovering chemicals from spent pulp liquors

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

D - Textiles, Paper

21

C

9/37, 9/36.9

D21C 11/04 (2006.01) B01D 1/14 (2006.01) D21C 11/10 (2006.01) D21C 11/12 (2006.01)

Patent

CA 1275761

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 vaporizer while external energy indepen- dent of combustion is simultaneously supplied The temperature and oxygen potential are carefully cont- rolled independently of each other by means of controlled supply of the energy. The product thus obtained is there- after introduced in full or in part into a soda recovery boiler .

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