Recovery of heat and chemical values from spent pulping liquors

Details Recovery of heat and chemical values from spent pulping liquors Recovery of heat and chemical values from spent pulping liquors

D - Textiles, Paper

21

C

9/36.2

D21C 11/14 (2006.01) D21C 11/00 (2006.01) D21C 11/12 (2006.01)

Patent

CA 1199454

IMPROVEMENTS IN THE RECOVERY OF HEAT AND CHEMICAL VALUES FROM SPENT PULPING LIQUORS ABSTRACT OF THE DISCLOSURE Introduction of a carbonaceous fuel such as coal or petroleum into the combustion stage of a multiple solids fluidized bed reactor system for pulping liquor combustion and chemical regeneration provides an alternative source of unburned carbonaceous solids which may be transferred along with pulping liquor solid combustion residues to a reduction stage providing a carbon source for the reduction of sulfate to sulfide.

415743

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