A primary and secondary cavity coupled adaptive cyclone centrifugal degassing method and device

Abstract

The invention discloses a primary and secondary chamber coupling type self-adaptive swirl centrifugal degassing method, which comprises the following steps: (1) the gas-liquid mixture enters the main swirl chamber for swirl separation, and under the action of centrifugal force, larger bubbles flow from the The overflow pipe at the top of the main cyclone flows out, and the liquid containing a small amount of fine bubbles enters the secondary swirl cavity from the tangential liquid inlet after passing through the coupling channel; (2), the liquid containing a small amount of fine bubbles swirls in the secondary swirl cavity Under the action of centrifugal force, fine air bubbles flow out from the overflow pipe at the top of the secondary cyclone, and the degassed liquid flows out from the outlet of the secondary cyclone; the number of coupling channels and secondary cyclones corresponds one by one , and there are at least two of them, and they are evenly distributed along the outer circumference of the main cyclone; the ratio of the centrifugal acceleration of the liquid in the secondary cyclone to the main cyclone is (5-100):1. A self-adaptive cyclone centrifugal degasser coupled with main and auxiliary chambers is also provided. The degassing method and device of the invention have high separation efficiency and high degassing efficiency.

Description

technical field [0001] The invention belongs to the technical field of gas-liquid separation. In particular, it relates to a primary and secondary chamber coupling type self-adaptive cyclone centrifugal degassing method and device. Background technique [0002] Liquid entrained gas in nature and industrial production is a common phenomenon, and the demand for liquid degassing exists widely in the fields of environmental protection, metallurgy and petrochemical industry. The gas entrained in the liquid not only causes foaming of the fluid, vibration of the pump valve, and damage to the production equipment, but also causes fugitive gas emission pollution, oxygen-enriched water environment, affects the accuracy of the detection instrument, and increases the analysis error. Therefore, it is necessary to pass the gas-liquid The separation device separates the gas in the liquid, that is, degasses the liquid. [0003] At present, cyclone degassing technology has been widely rese...

AI Technical Summary

Problems solved by technology

If simply relying on reducing the diameter of the cyclone and increasing the tangential velocity to generate stronger liquid phase turbulence, the behavior of the multi-scale bubble group will be more difficult to predict, and the breakup of the bubbles will increase the difficulty of separation and increase the energy consumption

Using a traditional gas-liquid separator with a single swirl radius to degas the above-mentioned gas-liquid mixture containing multi-scale bubble groups, the degassing efficiency is usually not more than 90%, and the energy consumption increases

[0012] Therefore, traditional gas-liquid separators and separation methods with a single swirl radius can no longer meet the separation requirements for multi-scale bubbles in liquids.

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