Filler for a supergravity rotation bed, preparation method and uses thereof

A supergravity rotating bed, wire mesh packing technology, applied in chemical instruments and methods, chemical/physical/physical chemical processes, chemical/physical processes, etc., can solve the problems of limited improvement in mass transfer effects, and achieve strong surface adhesion. , The effect of uniform film thickness and high erosion resistance

Inactive Publication Date: 2018-10-23
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above work is based on the inherent structure of stainless steel wire mesh, and the improvement of liquid dispersion and mass transfer effect is limited by adjusting the structure of stainless steel wire mesh packing.

Method used

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  • Filler for a supergravity rotation bed, preparation method and uses thereof
  • Filler for a supergravity rotation bed, preparation method and uses thereof
  • Filler for a supergravity rotation bed, preparation method and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A preparation method for a high-gravity rotating bed filler, comprising the steps of:

[0045] 1) The corrugated stainless steel wire mesh with a hole diameter of 1.62mm, a wire diameter of 0.5mm, and a mesh number of 10 was sandblasted for 40 minutes to remove surface impurities;

[0046] 2) At room temperature, use the PTFE fluororesin coating as the primer and spray the suspended emulsion evenly on the metal mesh of the straight stainless steel wire mesh with a spray gun under a balanced wind pressure of 0.6MPa;

[0047]3) Under the action of static electricity, polytetrafluoroethylene powder is adsorbed on the surface of the straight stainless steel wire mesh packing, the adsorption thickness is 15-25 μm, and then dried and cured at 350 ° C for 30 minutes, forming on the surface of the straight stainless steel wire mesh packing Hydrophobic film, high dispersibility of liquid for high-gravity rotating bed packing.

[0048] The physical picture of the filler is shown...

Embodiment 2

[0055] A preparation method for a high-gravity rotating bed filler, comprising the steps of:

[0056] 1) Sand blast the 10-mesh flat stainless steel wire mesh for 40 minutes to remove surface impurities;

[0057] 2) At room temperature, use the PFA paint as the primer and spray the suspended emulsion evenly on the straight stainless steel wire mesh metal mesh with a spray gun under a balanced wind pressure of 0.6MPa;

[0058] 3) Under the action of static electricity, the PFA powder is adsorbed on the surface of the stainless steel wire mesh packing, the adsorption thickness is 15-25 μm, and then dried and solidified at 380 ° C for 40 minutes to form a hydrophobic film on the surface of the stainless steel mesh packing, and the Filler for liquid high-dispersion high-gravity rotating bed.

[0059] The film structure on the surface of the filler is dense and uniform, and the contact angle is 124°. Compared with the unmodified straight stainless steel wire mesh, the surface hydr...

Embodiment 3

[0064] A preparation method for a high-gravity rotating bed filler, comprising the steps of:

[0065] 1) The 40-mesh flat stainless steel wire mesh was sandblasted for 45 minutes to remove surface impurities;

[0066] 2) At room temperature, use the ETFE paint as the primer and spray the suspended emulsion evenly on the straight stainless steel wire mesh metal mesh with a spray gun under a balanced wind pressure of 0.8MPa;

[0067] 3) The ETFE powder is adsorbed on the surface of the stainless steel wire mesh filler under the action of static electricity, and the adsorption thickness is 15-25 μm, and then dried and solidified at 380 ° C for 40 minutes to form a hydrophobic film on the surface of the stainless steel wire mesh filler to obtain Filler for liquid high-dispersion high-gravity rotating bed.

[0068] The film structure on the surface of the filler is dense and uniform, and the contact angle is 120°. Compared with the unmodified straight stainless steel wire mesh, th...

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Abstract

The invention discloses a filler for a supergravity rotation bed, wherein the filler comprises a substrate filler and a composite coating on the surface of the substrate filler, and the composite coating comprises a primer combined with the substrate filler and a low surface energy substance on the primer. According to the present invention, the filler has a good surface wetting effect, and can easily disperse the liquid phase and improve the mass transfer efficiency of the liquid phase. The invention further discloses a preparation method and uses of the filler.

Description

technical field [0001] The invention relates to the technical field of hypergravity. More specifically, it relates to a filler for a high-gravity rotating bed and its preparation method and application. Background technique [0002] In the 1870s, researchers from the British Imperial Chemical Company first proposed the hypergravity technology and invented the core device of the hypergravity technology - the hypergravity rotating bed (Rotating Packing Bed, referred to as the rotating bed). The high-gravity rotating bed is powered by a motor to simulate a high-gravity environment that cannot be reached on the earth. Under the action of strong centrifugal force, the gas-liquid phase is sheared and broken by the filler, the area of ​​the gas-liquid phase increases sharply, and the mixing and mass transfer of the gas-liquid two phases are greatly improved. In view of its unique advantages, the high-gravity rotating bed has been applied in industrial processes including nanomate...

Claims

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Application Information

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IPC IPC(8): B01J19/30
CPCB01J19/30B01J2219/304
Inventor 罗勇仉景鹏初广文陈建峰邹海魁孙宝昌张亮亮
Owner BEIJING UNIV OF CHEM TECH
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