Recovery boiler operation with black liquor feed in separate liq

Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With regeneration – reclamation – reuse – recycling or...

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162 3011, D21C 1112

Patent

active

058795111

ABSTRACT:
The present invention relates to a method of improving the operation of a boiler plant in a chemical pulp mill. At least part of the black liquor flow of the chemical pulp mill is divided into several batches being substantially in a solid form, which are mechanically turned into substantially equal-sized pieces for deeding into the recovery boiler and for combustion taking place therein. Waste liquor batches may be stored prior to the combustion. The invention also relates to a system for carrying out the method.

REFERENCES:
patent: 4054636 (1977-10-01), Menig
patent: 4135968 (1979-01-01), Dehaas
patent: 4363698 (1982-12-01), Nelson et al.
patent: 5143579 (1992-09-01), Field et al.
patent: 5230773 (1993-07-01), Petanen
Trobeck, The BT-System for Soda and Heat Recovery in Sulphate Pulp Mills, Paper Trade Journal, No. 16, Apr. 1950.

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