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Cheap and high efficiency rectification filler and preparation method thereof

A rectification packing and high-efficiency technology, applied in chemical instruments and methods, chemical/physical/physicochemical processes, chemical/physical processes, etc., can solve the problems of limiting the application range of packing, high cost and price, and low corrosion resistance , achieve the effects of reducing tower investment, reducing porosity, and stabilizing chemical properties

Active Publication Date: 2011-11-23
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used high-efficiency structured packing is BX packing obtained by stacking metal corrugated wire mesh at a certain angle, but the cost and price of metal mesh packing are much higher than ordinary packing, and the corrosion resistance is low, which limits this kind of packing. Application range of filler

Method used

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  • Cheap and high efficiency rectification filler and preparation method thereof
  • Cheap and high efficiency rectification filler and preparation method thereof
  • Cheap and high efficiency rectification filler and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In the present embodiment, the preparation method of rectification packing comprises the following steps:

[0043] (1) Mix the above-mentioned raw materials with the weight ratio of phenolic resin: silicon carbide microparticles: p-toluenesulfonic acid: ethanol=100:100:15:80, and obtain a slurry after ball milling for 1 hour; the particle size of the silicon carbide microparticles is 5 microns .

[0044] (2) Pre-cut polyurethane foam into crests wave distance A corrugated foam board with a corrugation angle 2=72°, the thickness of the board is 4mm; the average pore diameter of the polyurethane foam is 30-40PPi, and the opening rate is more than 99%;

[0045] (3) Dip the foamed plastic corrugated board obtained in step (2) into the slurry obtained in step (1) to ensure that all parts of the foamed plastic corrugated board have slurry attached, then take out the foamed plastic corrugated board and blow off the foamed plastic with compressed air The excess slurry in t...

Embodiment 2

[0053] In the present embodiment, the preparation method of rectification packing comprises the following steps:

[0054] (1) Mix the above raw materials in a weight ratio of epoxy resin: alumina particles: citric acid: acetone = 100:50:5:100, and ball mill for 2 hours to obtain a slurry; the particle size of the alumina particles is 2 microns.

[0055] (2) Pre-cut polyurethane foam into crests wave distance A corrugated foam board with a corrugation angle 2=78°, the thickness of the board is 4mm; the average pore diameter of the polyurethane foam is 30-40PPi, and the opening rate is more than 99%;

[0056] (3) Dip the foamed plastic corrugated board obtained in step (2) into the slurry obtained in step (1) to ensure that all parts of the foamed plastic corrugated board have slurry attached, then take out the foamed plastic corrugated board and blow off the foamed plastic with compressed air The excess slurry in the holes of the corrugated plate should be dried at room tem...

Embodiment 3

[0070] HCl acid was used as the medium to study and compare the corrosion resistance of materials. Three kinds of HCl acid solutions with different concentrations (5wt%, 10wt%, and 25wt%) were prepared, and foam resin-based corrugated structured packing and BX packing (316L ) soaked in three different concentration solutions for 3 weeks, and then measured the mass change rate before and after, showing that the foam resin-based corrugated structured packing did not find any signs of corrosion, while the BX packing (316L) lost weight obviously, and some areas had been spot-corroded, and even holes appeared ;

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Abstract

The invention which relates to the field of structured fillers concretely relates to a cheap and high efficiency rectification filler and a preparation method thereof. The filler which is suitable for a rectification operation under a temperature of less than 300 DEG C is formed by stacking filler unit plates with corrugated shapes, the filler unit plates are foamed resin-based filler unit plateswith three-dimensional connected network structures, the foam pore sizes are between 10PPi and 80PPi, and the volume fraction is controlled between 10% and 80%. A plurality of the filler unit plates are stacked, the filler unit plates of the odd-numbered layers have a consistent channel direction, and the filler unit plates of the even-numbered layers have a consistent channel direction, and an angle between the channel direction of the filler unit plates of the odd-numbered layers and the channel direction of the filler unit plates of the even-numbered layers is 30-170 DEG; a corrugation angle between a corrugation parallel direction and a vertical direction of a filler disc is 15-85 DEG, corrugations of adjacent filler unit plates have a same angle and opposite directions; and the filler unit plates are bonded after being stacked, and are subjected to a heat treatment to obtain the filler. The foamed resin-based structured filler unit plates of the invention allows the three-dimensional network connectivity characteristic of a polyurethane foamed plastic template to be kept, and has the characteristics of large specific surface area, thin wall, cheapness, high chemical stabilityand the like.

Description

technical field [0001] The invention relates to the field of structured packing, in particular to a low-cost and high-efficiency rectification packing and a preparation method thereof. The packing is a corrugated structured foam resin-based packing, which is especially suitable for rectification operations below 300°C and has the characteristics of high efficiency and low cost. Background technique [0002] Packing is the core component of chemical mass transfer equipment. Its main function is to provide a sufficient contact surface for gas-liquid or liquid-liquid two phases, and to strengthen the mass transfer or heat transfer process between the two phases. The structure and performance of the packing have a decisive impact on the technical and economic indicators of the packed tower. It is a product with a large quantity and a wide range, and has significant social and economic benefits. [0003] Commonly used fillers can be broadly divided into two types: "random packing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/32
Inventor 张劲松杨振明田冲曹小明
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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