Tangential inlet capable of achieving twice separation and single-stage oil-water cyclone separator

Abstract

The invention discloses a tangential inlet capable of achieving twice separation and a single-stage oil-water cyclone separator. The tangential inlet is characterized in that an oil-phase hook-face coalescing plate is arranged in a tangential inlet main body, the oil-phase hook-face coalescing plate is in a wave line shape, the oil-phase hook-face coalescing plate is arranged in the middle in thetangential inlet main body, and three flow guiding plates are fixed to one end, far from coming liquid of the tangential inlet, of the plate; a primary separation pipe is arranged above the oil-phasehook-face coalescing plate, a plurality of manifolds are connected to the pipe, and the openings of the manifolds are respectively arranged in the centers of areas which are marked out by all the hookfaces on the oil-phase hook-face coalescing plate; according to the single-stage oil-water cyclone separator using the tangential inlet, the tangential inlet needs to be tangentially connected and communicated with an outer wall of the upper part of a rotational flow cavity; furthermore, the primary separation pipe is connected with a guiding pipe to be connected into an overflow pipe. By means of the scheme, the single-stage oil-water cyclone separator has the advantages of twice separation function, small equipment space occupation, convenience in operation and maintenance and good separation effect.

Description

technical field [0001] The invention relates to a single-stage cyclone separation device which can be applied in the fields of petroleum, chemical industry, environmental protection and the like, and can perform coalescence and separation of small-diameter oil droplets twice. Background technique [0002] At present, cyclones are more and more widely used in petroleum, chemical and environmental protection industries. However, as oilfield development enters the middle and late stages, the oil-water density difference between heavy oil and polymer-containing production fluid is small, and the viscosity of oil-water emulsion is high. The separation efficiency of the traditional single-stage cyclone separator is low, and the oil-water cannot be fully separated. And other issues. In response to this problem, at present, people have designed a two-stage series cyclone separation device and a separation system that combines cyclones with settling tanks and other equipment. They m...

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Problems solved by technology

[0003] Cyclone separation devices have been used in related industries in my country. People improve the overall separation effect of cyclone devices by changing the structure of the cyclone device or adding secondary separation parts. The invention patents involved, such as ZL 201610326039.1, ZL 201310746224.2, CN 201710226452.5, ZL 201320185718.3, ZL201110252013.4, ZL 201220253954.X, CN201310746224.2, CN201610902326.2, etc. In addition to occupying much more space than a single-level device, the maintenance of the above inventions is far more cumbersome and complicated in structure. Cyclone, especially for offshore platforms with limited space, the limitations of these devices are more prominent

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