Method for treating black liquor

Details Method for treating black liquor Method for treating black liquor

1991-11-05

1993-04-13

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 3912, 162 3011, F02C 328, F02C 600

Patent

active

052011720

ABSTRACT:
A method and apparatus for recovering black liquor chemicals and heat in a sulphate pulp process. The black liquor is concentrated in an evaporation plant, which includes a pressure heating reactor, after which the black liquor is gasified or combusted in a reactor for producing hot gases. The hot gases formed in the reactor are introduced into gas turbine power plant. The exhaust gases from the gas turbine are introduced into a waste heat boiler, where steam is generated for a steam turbine power plant. Secondary steam is led from the pressure heating reactor as injection steam into the gas turbine, to control inlet temperature.

REFERENCES:
patent: 4682985 (1987-07-01), Kohl
patent: 4909899 (1990-03-01), Kilskila
patent: 4929307 (1990-05-01), Kiiskila et al.

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