Method and arrangement for increasing evaporation capacity of a

Details Method and arrangement for increasing evaporation capacity of a Method and arrangement for increasing evaporation capacity of a

1997-10-30

2000-10-17

Manoharan, Virginia

Concentrating evaporators

Processes

Involving waste liquid

159 23, 159 241, 159 172, 159DIG8, 162 16, 162 3011, 162 47, 162239, B01D 126, B01D 128, D21C 1110

Patent

active

061325554

ABSTRACT:
A method and arrangement for increasing evaporation capacity in a multi-stage evaporation plant of spent liquor of a pulp mill. The method includes increasing the pressure of vapor discharged from an evaporation stage by a separate booster, and supplying the vapor having increased pressure to the following evaporation stage. In the arrangement the booster (A-E) is provided in a conduit through which vapor is supplied from one evaporation stage onwards for increasing the pressure of the vapor conducted in the conduit.

REFERENCES:
patent: 3763020 (1973-10-01), Drew et al.
patent: 3951753 (1976-04-01), Roller
patent: 4284480 (1981-08-01), Sterlini
patent: 4379734 (1983-04-01), Franzen
patent: 5139620 (1992-08-01), Elmore et al.
patent: 5507141 (1996-04-01), Stigsson
European Search Report for EP 97 66 0115.
2-Page Derwent Abstract of EP 97 66 0115.

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