FIELD: process engineering.
SUBSTANCE: invention relates to washing out of bottom sediment and may be used in oil industry. Bottom sediment is washed out by oil jet fed via wash-out device arranged at tank bottom. Said device is rotated by fed oil and equipped with rotation speed pickup. Shut-off valves control unit and shut-off valves are designed to vary oil feed to wash-out device.
EFFECT: higher efficiency, reduced electric power consumption.
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