Method and arrangement for treating black liquor

Details Method and arrangement for treating black liquor Method and arrangement for treating black liquor

D - Textiles, Paper

21

C

D21C 11/10 (2006.01) D21C 11/06 (2006.01) D21C 11/12 (2006.01) F01K 23/06 (2006.01)

Patent

CA 2054799

A method and arrangement for recovering black liquor chemicals and heat in a sulphate pulp process. The black liquor is concentrated in an evaporation plant, which comprises a pressure heating reactor (12), after which the black liquor is gasified or combusted in a reactor (10) for producing hot gases. The hot gases formed in the reactor (10) are introduced into a gas turbine power plant (16). The exhaust gases from the gas turbine (40) are introduced into a waste heat boiler (52), where steam is generated for a steam turbine power plant (18). Secondary steam is led from the pressure heating reactor as injection steam into the gas turbine.

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