System for treating desalter effluent water

Details System for treating desalter effluent water System for treating desalter effluent water

1997-12-15

1999-11-02

Hruskoci, Peter A.

Liquid purification or separation

With gas separator

96182, 210199, 210202, 210205, 210511, 422256, C02F 120

Patent

active

059763663

ABSTRACT:
The system for treating effluent water coming out from the desalter in accordance with the present invention comprises a slop oil separator 1 for removing oil components in the effluent water from the desalter; a WSR separator 2 for further removing emulsion type oil components using naphtha; a water stripper 4 for removing gas components such as H.sub.2 S and NH.sub.3 in the effluent water discharged from the WSR separator; a reaction tank 5 for reacting organic and/or inorganic impurity matters such as phenols and suspended solids in the effluent water discharged from the water stripper with activated charcoal; and a settling tank 6 in which an agglomerating agent is introduced, thereby precipitating sludge in the lower part of the settling tank. A buffering tank 3 may be installed between a desalter (not shown in FIG. 1) and an oil separator 1 or between a WSR separator 2 and a water stripper 4 to play a role as a buffer for safety in case of an accident in the process. Activated charcoal is introduced into the reaction tank 5. An agitator 14 is installed to mix physically the effluent water containing activated charcoal in the reaction tank. Alternatively, an air supply device 15 is installed to mix the effluent water containing an activated charcoal by supplying air into the reaction tank.

REFERENCES:
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patent: 5545330 (1996-08-01), Ehrlich
patent: 5607574 (1997-03-01), Hart

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