Cyclone gas flotation separator

Abstract

The invention relates to a cyclone gas flotation separator which comprises a sealed jar body, wherein a scum outlet is formed at the upper part of the jar body; a treating water outlet is formed at the lower part of the jar body; an inner barrel is mounted in the jar body; an opening is formed at the upper end of the inner barrel; at least one water inlet is formed at the lower side of the inner barrel and is connected with a sewage inlet pipe through a pipeline; an annular baffle plate is mounted at the upper part of a water outlet at the lower part of the inner barrel; and a gap is formed between the baffle plate and the inner wall of the jar body. The cyclone gas flotation separator has the advantages that the structure is compact; the equipment volume and the occupied area are reduced; and the oil removal effect and suspended particulate matter removal effect are good. Therefore, the cyclone gas flotation separator is suitable for various application fields such as dirty oil and water separation, suspended matter separation and the like, and especially suitable for the treatment of the oil-containing sewage in the petrochemical industry.

Description

technical field [0001] The invention relates to a cyclone air flotation separator. Background technique [0002] Petroleum and petrochemical industries will produce a large amount of oily sewage in the production process of oil extraction, treatment, crude oil refining, etc. The commonly used oil-water separation methods mainly include: gravity sedimentation separation, air flotation, hydrocyclone separation, filtration separation and other methods. These methods have their own advantages and disadvantages and scope of application. The air flotation separation technology has been widely used in the treatment of petroleum and chemical oily sewage due to its mature technology, wide application scope, low investment, and low operation and maintenance costs. [0003] Traditional air flotation separation technology, the residence time is basically between 15 minutes and 30 minutes. Due to the long residence time, the equipment is large in size and occupies a large area, which lim...

AI Technical Summary

Problems solved by technology

[0003] Traditional air flotation separation technology, the residence time is basically between 15 minutes and 30 minutes. Due to the long residence time, the equipment is large in size and occupies a large area, which limits its application range, especially for compact equipment. More stringent requirements for testing sites (such as FPSO, adopting platforms, etc.)

Secondly, the traditional air flotation separation efficiency is generally about 80%, which is increasingly unable to meet the requirements of high oil removal efficiency.

[0004] The hydrocyclone is separated by the density difference between the oil droplet and the sewage. When the density of the oil droplet is getting closer to the sewage density and the diameter of the oil droplet is smaller, the degreasing effect of the hydrocyclone will be greatly reduced, which cannot meet the requirement of oily sewage. Processing requirements; at the same time, hydrocyclones have high requirements on inlet pressure, and for low-pressure conditions, power equipment needs to be added, which increases investment and operating costs. Thirdly, hydrocyclones have low fluctuation resistance and poor adaptability

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