METHOD AND EQUIPMENT FOR TREATMENT OF DRAIN PRODUCED AT COKE COOLING Russian patent published in 2009 - IPC C02F1/40 

FIELD: petroleum chemistry.

SUBSTANCE: invention refers to purification of drains, contaminated with oil, and discloses method of purification of drains produced at coke cooling in process of retarded coking in petroleum industry. The method consists in following stages: cooling of drains produced at coke cooling in the process of retarded coking to 5-55°C at absolute pressure 0.1-0.25 MPa for receiving cooled drains, separation of cooled drains into solid phase and liquid for producing phase of coke breeze and liquid phase, successive separation of produced liquid phase for receiving oil phase and water phase, further separation of water from produced oil phase for production of separated oil phase. Equipment for implementation of the method consists of a coke packed tower, of a mixer for drain cooling, of a separator for coke breeze separation, of an oil-water separator and of an oil tank.

EFFECT: reduced costs for equipment at high efficiency of treatment of drains produced at coke cooling, efficient prevention of sulphur contamination, economy of resources, increased efficiency of resources usage and of low temperature coking.

14 cl, 1 dwg, 1 ex