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Basalt high-precision filter material and preparation method thereof

A basalt, high-precision technology, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of reduced service life, poor folding resistance, poor wear resistance, and poor filtration accuracy of basalt fibers

Active Publication Date: 2012-02-08
辽宁新洪源环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

2. The composition of furnace gas is complex, containing high carbon monoxide (75-85%), that is, coal gas, which is a flammable, explosive and toxic gas, and is very dangerous
When the temperature of the flue gas is lower than the condensation temperature of the tar, the tar is precipitated and bonded with the dust, blocking the pipeline and the purification equipment, and finally causing the purification equipment to be paralyzed
4. The temperature of the furnace gas is high. Under normal working conditions, the temperature of the flue gas is 500 ° C ~ 700 ° C, and the instantaneous high temperature reaches 1000 ° C, and the temperature fluctuates greatly.
[0004] Some filter materials widely used at present mainly include filter materials made of polyester, glass fiber, polyphenylene sulfide fiber (PPS), aramid fiber, polyimide fiber (P84) and polytetrafluoroethylene fiber (PTFE). However, the temperature resistance of these filter materials cannot meet the dust filtration requirements of the closed calcium carbide furnace industry.
There are also some basalt fibers used to make filter materials, but due to the poor folding resistance and wear resistance of basalt fibers, their service life is greatly reduced; and the filtering effect of ordinary basalt fiber filter materials is not ideal.
Therefore, these filter materials have problems such as poor temperature resistance, poor filtration accuracy, and short service life to varying degrees, which cannot meet the dust filtration requirements similar to those of the closed calcium carbide furnace industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. When the basalt fiber is drawn, it is directly processed by polytetrafluoroethylene emulsion (containing 20wt% polytetrafluoroethylene in its composition), drawn into a 33.5tex raw silk, and made into a warp yarn of 272tex through an annealing and twisting process. Then warp, pull out the heald.

[0017] 2. The weft yarn is drawn from basalt fiber to form 33.5tex, which is spun into 272tex yarn through the process of annealing and twisting, and is processed into bulked yarn through the bulking process.

[0018] 3. Use an air-jet loom to weave 750g / m2 basalt bulked filter cloth with 3 / 5 weft double technology.

[0019] 4. The filter cloth is subjected to post-finishing process, and then impregnated with vermiculite mixed treatment solution. The proportioning of described vermiculite mixed treatment liquid is as follows:

[0020] main ingredient

[0021] 5. The treated basalt filter cloth is dried and heat-set to make basalt high-precision filter material,...

Embodiment 2

[0023] 1. When the basalt fiber is drawn, it is directly treated with polytetrafluoroethylene emulsion (which contains 20wt% polytetrafluoroethylene), drawn into a 26tex raw silk, and made into a 156tex warp yarn through the process of retreating and twisting, and then warping , dig comprehensive.

[0024] 2. The weft yarn is drawn from basalt fiber to form 26tex. It is spun into 156tex yarn through the process of unwinding and twisting. After the bulking process, it is made into bulked yarn and then twisted with 52tex ordinary basalt yarn into 208tex. weft.

[0025] 3. Use an air-jet loom to weave a 480g / m2 basalt bulked filter cloth with a 1 / 3 twill weave process.

[0026] 4. The filter cloth is subjected to post-finishing process, and then impregnated with the mixed treatment solution. The proportioning of described mixed treatment liquid is as follows:

[0027] main ingredient

[0028] 5. The treated basalt filter cloth is dried and heat-set to make basalt hi...

Embodiment 3

[0030] 1. When the basalt fiber is drawn, it is directly treated with polytetrafluoroethylene emulsion, drawn into 68tex raw silk, and then made into 136tex warp yarn through the process of unwinding and twisting, and then warping and hedging.

[0031] 2. The weft yarn is drawn from basalt fiber to form 68tex raw silk, which is spun into 136tex yarn through the process of annealing and twisting, and then processed into bulky yarn through the bulking process, and then twisted with 136tex ordinary basalt yarn 272tex weft.

[0032] 3. Use a rapier loom to weave a 710g / m2 basalt bulked filter cloth using a double twill weave process.

[0033] 4. The filter cloth is subjected to post-finishing process, and then impregnated with the mixed treatment solution. . The proportioning of described mixed treatment liquid is as follows:

[0034] main ingredient

Mixing ratio

PTFE

25wt%

A silane coupling agent

2.5wt%

graphite

6wt%

Adhes...

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PUM

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Abstract

The invention aims at providing a basalt high-precision filter material and a preparation method thereof. The filter material has the advantages of good high-temperature resistance performance (the filter material can continuously work at 500 DEG C, and can work at the momentary temperature higher than 650 DEG C), high filtering precision, long service life and the like. The preparation method ofthe basalt high-precision filter material of the invention adopts basalt fiber for preparing warp yarns and woof yarns, then, filter cloth is prepared from the warp yarns and the woof yarns, the warpyarns are obtained through preparing the basalt fiber into yarns through immersion treatment by polyfluortetraethylene emulsion, and the woof yarns carries out varicosity treatment.

Description

technical field [0001] The invention relates to a high-temperature filter material and a preparation method thereof, in particular to a basalt high-precision filter material and a preparation method thereof. Background technique [0002] Calcium carbide is a very important basic industrial raw material with a wide range of uses. It can be used to manufacture polyvinyl chloride, resin, polyvinyl alcohol, neoprene and other inorganic materials; it is a raw material for the manufacture of nitrogen fertilizers, pesticides, medicines, etc.; Cutting, gas welding and other fields. With the rapid development of the national economy, the demand for polyvinyl alcohol and resin has grown rapidly, driving the demand for calcium carbide. However, the calcium carbide industry is a high energy consumption, high emission, and high pollution industry, especially the flue gas emitted by calcium carbide furnaces will cause serious pollution to the atmosphere. Although the closed calcium carb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/08
Inventor 宋朋泽吴曙良
Owner 辽宁新洪源环保材料有限公司