Main and auxiliary cavity coupling type self-adaptive cyclone centrifugal degassing method and device

Abstract

The invention discloses a main and auxiliary cavity coupling type self-adaptive cyclone centrifugal degassing method. The main and auxiliary cavity coupling type self-adaptive cyclone centrifugal degassing method comprises the following steps: (1) a gas-liquid mixture enters a main cyclone cavity for hydrocyclone separation, and under the action of a centrifugal force, larger bubbles flow out froman overflow pipe at the top of the main cyclone, and the liquid containing a small amount of fine bubbles enters auxiliary cyclone cavities from tangential liquid inlets after passing through coupling channels; and (2) hydrocyclone separation is performed on the liquid containing the small amount of fine bubbles in the auxiliary cyclone cavities, and under the action of the centrifugal force, thefine bubbles flow out from the overflow pipes at the top of the auxiliary cyclones, and the degassed liquid flows out from the discharge ports of the auxiliary cyclones. The number of the coupling channels has a one-to-one correspondence with the number of the auxiliary cyclones, and the number is at least 2; the coupling channels and the auxiliary cyclones are evenly distributed along the outercircumference of the main cyclone; and the ratio of the centrifugal acceleration of the liquid in the auxiliary cyclones to the centrifugal acceleration of the liquid in the main cyclone is (5 to 100)to 1. The main and auxiliary cavity coupling type self-adaptive cyclone centrifugal degassing method and device disclosed by 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...

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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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