Loading cycle lamination floatation separation device and method for intensifying oil-water separation

Abstract

The invention discloses a loading cycle lamination floatation separation device and a method for intensifying oil-water separation. Particularly, in the loading cycle lamination floatation separationdevice, a lower layer loading internal cycle floatation area and an upper layer advection floatation area in superposition series connection in space are constructed, the hydraulic connection and theexchange among oil, gas and water in the sewage are established between the two floatation areas through the action of gas migration and transport, in the loading internal cycle floatation area, an air lift principle is used for constructing a liquid flow cycle flowing through a flow rising area and a flow falling area alternatively, and the liquid flow cycle provides more adhesion opportunities for bubbles and oil particles; the more adhesion opportunities improve the oil-water separation efficiency and separation degree; and in the advection floatation area, secondary floatation is carried out on the sewage passing through the loading internal cycle floatation area. The loading cycle lamination floatation separation device and the method for intensifying the oil-water separation have theadvantages of effectively improving the oil-water separation efficiency and solving the problem of low adhesion efficiency of traditional air flotation bubbles.

Description

technical field [0001] The invention relates to an oily sewage treatment device and a treatment method, in particular to the treatment of oilfield three-element compound flooding sewage. Background technique [0002] The major oilfields in my country have successively entered the middle and late stages of effective development, the water content of the produced fluid has increased significantly, and the production decline of oilfields has accelerated. In order to effectively utilize the underground recoverable reserves and prolong the economic development cycle of the oilfield, the ASP flooding recovery technology has undergone years of scientific research and field tests, and the technology is becoming more and more mature. It can effectively achieve the purpose of improving oil recovery and increasing crude oil production, and has become a technology for stabilizing oilfield production. Assure. [0003] The oil-water interfacial tension of the ASP flooding production flui...

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Problems solved by technology

[0005] In view of this, the present invention provides a loading cycle stack flotation separation device and an enhanced oil-water separation method, which provides a new technology for the effective treatment of oilfield ASP flooding sewage, and solves the effect of traditional flotation technology on oil-water separation of ASP flooding sewage. bad question

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