Minimizing evaporator scaling and recovery of salts during gasif

Details Minimizing evaporator scaling and recovery of salts during gasif Minimizing evaporator scaling and recovery of salts during gasif

1997-07-09

2000-07-11

Manoharan, Virginia

Distillation: processes, separatory

Distilling to separate or remove only water

48197, 48202, 48204, 48210, 159 44, 159 45, 159DIG13, 203 1, 203 10, 203 48, B01D 342, C02F 104, C10J 372

Patent

active

060867221

ABSTRACT:
A process for minimizing evaporator scaling during the recovery of liquids and solids from the aqueous effluent discharged during a partial oxidation gasification, wherein the aqueous effluent contains ammonium chloride (NH.sub.4 Cl). The aqueous effluent is evaporated to produce a distillate water and a brine having an NH.sub.4 Cl concentration of about 10 to 60 weight percent. The brine can be further concentrated and ammonium chloride crystals are recovered. The distillate water is recycled to the gasification reaction. No effluent discharges to the environment.

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