A multi-phase flow separation device for semi-coke wastewater

Abstract

The invention relates to a multi-phase flow separation device for semi-coke wastewater, comprising: a shell, a liquid inlet, a supergravity swirl pre-separation cylinder, an oil-water separation device, an oil-water coalescence device, an oil storage room, an oil outlet and a sewage discharge port, wherein the liquid inlet is fixedly connected to one end of the supergravity cyclone pre-separation cylinder; the other end of the supergravity cyclone pre-separation cylinder is fixedly connected to the shell and communicates with the front end of the cavity formed by the shell; oil-water separation The device and the oil-water coalescing device are respectively arranged in the cavity and fixedly connected with the inner wall of the casing; the oil storage chamber is arranged at the end of the cavity; the oil outlet is opened on the casing and communicated with the oil storage chamber. The device of the present invention adopts high-efficiency cyclone separation technology, improves separation speed through internal flow channels, coalescing elements and structural forms, reduces settling time, and removes light coal tar, heavy coal tar, waste water, sludge and The suspended solids are separated and collected to provide qualified, continuous and stable water quality for the post-processing process of wastewater treatment.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment devices, and in particular relates to a semi-coke wastewater multiphase flow separation device. Background technique [0002] Semi-coke wastewater, also known as semi-coke wastewater, refers to a kind of industrial wastewater formed in the process of low-metamorphism coal dry distillation (about 600-800°C), gas purification, and semi-coke steam quenching. The wastewater has "four high "One less" (high COD, high oil, high ammonia nitrogen, high phenol, less waste water production), which contains a large number of complex components that are difficult to degrade and highly toxic substances, such as ammonia, phenol, petroleum and other substances. During the coke quenching process, most of these pollutants are attached to the semi-coke, which seriously affects the quality of the semi-coke as a clean fuel. [0003] It is imminent to comprehensively treat the high-concentration organic w...

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Problems solved by technology

[0004] At present, there is no mature semi-coke wastewater pretreatment process at home and abroad. Semi-coke enterprises directly settle the semi-coke wastewater through the sedimentation tank, and then simply remove the coal tar and suspended solids in the water and directly use it as coke quenching water, which is seriously serious. Affected the quality of semi-coke

In addition, the sedimentation method of the sedimentation tank has low efficiency and is affected by the internal structure, and the indicators of coal tar content and suspended solids content in the treated water are unstable

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