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Gas-liquid coalescence filter element and application and filtering device containing gas-liquid coalescence filter element

A technology of coalescing and filter elements, which is applied in the field of multiphase flow separation, can solve the problems of poor performance of pressure drop, and achieve the effect of good ability to intercept droplets, promote discharge, and improve filtration efficiency

Pending Publication Date: 2020-03-27
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Existing gas-liquid coalescing filters generally increase the efficiency by increasing the number of filter element layers, pore size gradient arrangement of the filter layer, and increasing the liquid drainage layer, but the pressure drop does not perform well.

Method used

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  • Gas-liquid coalescence filter element and application and filtering device containing gas-liquid coalescence filter element
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  • Gas-liquid coalescence filter element and application and filtering device containing gas-liquid coalescence filter element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] This embodiment provides a gas-liquid coalescing filter with a structure such as Figure 2A and Figure 2B As shown, the filtering device includes a filter frame 1 and a filter core wound on the surface of the supporting frame 1 . Among them, the special-shaped fiber pre-separation layer 2 is wound on the surface of the filter skeleton 1, and the number of winding turns is 1; the special-shaped fiber coalescence layer 3 continues to wind along the special-shaped fiber pre-separation layer 2, and the number of winding turns is 4 turns; the special-shaped fiber discharge Layer 4 continues to wind along the special-shaped fiber coalescing layer 3, and the number of winding turns is 1 turn.

[0066] Wherein, the average pore diameter of the special-shaped fiber pre-separation layer 2 is 10 μm, the thickness is 1.5 mm, and the fiber shape of the special-shaped fiber used is cross. The diameter (diameter of circumscribed circle) of the shaped fiber used was 15 μm. The pre-...

Embodiment 2

[0076] In Example 1, the shapes of the shaped fibers of the pre-separation layer, the coalescence layer, and the drainage layer are trilobal, and the other parameters remain unchanged. The experimental results showed that the pressure drop decreased by 10%, and the cumulative efficiency near the most easily penetrated particle size increased from 99.48% to 99.82%.

Embodiment 3

[0078] In Example 1, the coalescing layer with an average pore diameter of 3 μm is selected, and the other parameters remain unchanged. The experimental results showed that the pressure drop decreased by 15%, and the cumulative efficiency near the most easily penetrated particle size changed from 99.48% to 99.85%.

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Abstract

The invention provides a gas-liquid coalescence filter element and application and a filtering device containing the gas-liquid coalescence filter element. The filter element comprises a pre-separation layer, a coalescence layer and a liquid discharging layer which are sequentially arranged in the airflow direction. The pore diameter of the pre-separation layer is 8-12 [mu] m, the thickness of thepre-separation layer is 1-2 mm, the pre-separation layer is formed by profiled fibers and the whole pre-separation layer has hydrophobicity and lipophobicity. The pore diameter of the coalescence layer is 3-8 [mu] m, the thickness of the coalescence layer is 0.4-0.6 mm, the coalescence layer is formed by profiled fibers and the coalescence layer is divided into a hydrophobic and oleophobic area and a hydrophilic and oleophylic area which are arranged at intervals in the circumferential direction. The pore diameter of the liquid discharging layer is 10-20 [mu] m, the thickness of the liquid discharging layer is 2-3 mm, the liquid discharging layer is formed by profiled fibers, the air inlet side is a hydrophilic and oleophylic area, and the air outlet side is a hydrophobic and oleophobic area. The filter element can be used for filtering a gas-liquid mixture. The filtering device containing the filter element can remarkably reduce the filtering pressure drop while improving the filtering efficiency.

Description

technical field [0001] The invention relates to a filter element, in particular to a filter element for filtering a gas-liquid mixture, and belongs to the technical field of multiphase flow separation. Background technique [0002] During the transportation of industrial gases such as natural gas and coal bed methane and the use of compressed air, condensate droplets and particles are often entrained. These impurities will cause corrosion and wear of pipelines, measurement failure of metering equipment, and failure of compressor dry gas sealing system. And serious problems such as shutdown of large compressor units. In order to remove impurities, gas-liquid filtration is widely used in the above-mentioned industrial places. Among them, the tiny droplets are mainly removed by the coalescence and separation of the gas-liquid coalescence filter element. [0003] The working principle of the gas-liquid coalescing filter element: the liquid-containing gas passes through the coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/00
CPCB01D46/0036
Inventor 陈锋刘佳霖吴小林姬忠礼邢颜凝卢锦杰
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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