Evaporation assembly with vapor circulating means

Concentrating evaporators – Film type – Moving film

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159 134, 159 14, 159 161, 159 271, 159 274, 159DIG13, B01D 112, B01D 122

Patent

active

051511541

ABSTRACT:
An evaporation assembly for concentrating liquids having an evaporation area for conveying a liquid to be concentrated and a heating system for heating and concentrating the liquid conveyed through the evaporation area. The evaporation area includes a liquid inlet for introducing liquid to be concentrated into the evaporation area, and a liquid and vapor outlet for conveying the liquid through the evaporation area. A vapor circulating system is coupled between the liquid inlet end and the liquid and vapor outlet of the evaporation area for increasing the velocity of the liquid to be concentrated for inpeding or removing precipitated particles or deposits from the heat exchange surfaces.

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Huercanos, J. "Black Liquors Recovery System for Non-Wood Small Pulp Mills", Proceedings of the TAPPI, 1982 Pulping Conference.

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