Oil-water separating device for separation and recovery of thin oil film

Abstract

The invention discloses an oil-water separating device for separation and recovery of a thin oil film. The oil-water separating device comprises a tank body, a tank cover and an oil collecting well, wherein an inlet is formed in front of the tank body, an outlet is formed in the rear part of the tank body, and at least one layer of choked flow device consisting of a choked flow separating plate and a comb column array is arranged at the lower part in the tank body; the tank cover which gradually rises from rear to front and from left and right to middle to form a conical structure is connected to the upper side of the tank body in a sealing manner; and the oil collecting well is vertically arranged at the highest part of the conical structure on the outer wall of the tank cover, the oil collecting well is respectively communicated with the inside of the tank body and external atmosphere, an oil-level detector is arranged in the oil collecting well, a connecting side pipe is arranged on the pipe wall of the oil collecting well, and an electromagnetic valve is arranged on the connecting side pipe. The oil-water separating device disclosed by the invention is in a structure of bilateral symmetry with regard to the central line of the tank body. The oil-water separating device for separation and recovery of the thin oil film is especially suitable for oil-water separation and recovery of a micron-order thin oil film.

Description

technical field

[0001] The invention relates to the technical field of oil-water separation equipment, in particular to an oil-water separation device for thin oil film separation and recovery. Background technique

[0002] In recent years, marine oil spills and oil pollution accidents have occurred frequently, which has had a great impact on the marine environment. Oily sewage usually exists in the form of oil-water stratified flow. The oil floats on the water surface, forming a thin oil film, or even oil blooms. For example, in June 2011, the Penglai 19-3 oil field in Bohai Sea leaked, and an oil film appeared on the nearby sea surface. For this kind of oily sewage with a thin oil layer, it is usually surrounded and not collected, or sprayed with a chemical dispersant to make the oil slick gather into small balls, sink 4 to 5 meters below the water surface or sea surface, and let it drift or naturally Degradation; Because chemical dispersants can cause secondary pollution...

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