DEVICE FOR OIL PRODUCT DEHYDRATION FROM SEDIMENT PONDS AND SLUDGE TANKS Russian patent published in 2017 - IPC B01D1/22 

FIELD: oil and gas industry.

SUBSTANCE: device is made in the form of film evaporator comprising a vertical cylindrical body where evaporating tubes fixed in tube plates are positioned, filming agents with caps are positioned at the upper ends of the evaporating tubes. The caps are provided with three spring legs pressed with a force to the filming agents and covering the filming agent at the bottom part. The filming agents are composed of a cylindrical part formed of a foil with a longitudinal weld folded in the form of a cylinder, made above the ring positioned outside at the cylindrical part and with the external diameter greater than the internal diameter of the evaporating tube with due account for expanding, have the external diameter equal to the internal diameter of the evaporating tube, and the length of the cylindrical part below the ring larger than the length of the expanded part of the pipe. A distributor plate with the holes positioned between the caps is positioned above the caps and is immediately adjacent to them. A breathing tube which connects the upper and lower spaces of the evaporator is inserted into one of the evaporating tubes. The filming agents have through holes. There is a centrifugal separator positioned below the tube bundle, consisting of a perforated chase with vertical slits installed with clearance around the perimeter and a gas outlet pipe provided with a coiled plate, which exterior perimeter fits tight to the perforated chase.

EFFECT: reduced structure metal consumption, improved unit compactness.

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