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New use of TiAl intermetallics polyporous material and TiCl4 production method

An intermetallic compound, porous material technology, applied in chemical instruments and methods, separation methods, titanium halide, etc., can solve the problems of resource waste, environmental pollution, etc., to save resources and energy, avoid environmental pollution, and reduce labor intensity. Effect

Active Publication Date: 2009-01-07
CHENGDU INTERMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to improve the filtration accuracy and simplify the production process, while avoiding environmental pollution and waste of resources caused by frequent replacement of filter elements in production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] First, the TiCl produced from the fluidized bed 4 The gas passes through the dust collector for preliminary solid slag discharge; then, the TiAl intermetallic compound porous material is used as the filter element, and the TiCl 4 The gas is directly separated from gas to solid, and the filtration pressure is 0.002MPa. After filtering for 3 hours, use inert gas for backwashing. The backwashing pressure is controlled at 0.050MPa, and the backwashing time is 5 seconds. TiCl 4 The gas enters the leaching tower to condense and then enters the thickener, allowing the remaining liquid slag to settle naturally to obtain TiCl with a solid content of 0.5%. 4 product.

Embodiment 2

[0027] First, the TiCl produced from the fluidized bed 4 The gas passes through the dust collector for preliminary solid slag discharge; then, the TiAl intermetallic compound porous material is used as the filter element, and the TiCl 4 The gas is directly subjected to gas-solid separation, the filtration pressure is 0.030MPa, and after 4 hours of filtration, TiCl 4 Filter the air for backwashing, the backwashing pressure is controlled at 0.050MP, the backwashing time is 10 seconds, continue to filter after the backwashing, the filtered TiCl 4 The gas enters the leaching and condensing and then enters the thickener to make the remaining liquid slag settle naturally to obtain TiCl with a solid content of 0.45%. 4 products; in order to further improve the TiCl 4 The purity of the liquid, the TiCl in the thickener 4 After the liquid overflows to the low-level storage tank, it is pressed into the high-level tank by a booster pump, and the TiCl containing a small amount of solid...

Embodiment 3

[0029] First, the TiCl produced from the fluidized bed 4 The gas passes through the dust collector for preliminary solid slag discharge; then, the TiAl intermetallic compound porous material is used as the filter element, and the TiCl 4 The gas is directly subjected to gas-solid separation, the filtration pressure is 0.040MPa, and after 6 hours of filtration, TiCl 4 Filter the air for backwashing, the backwashing pressure is controlled at 0.090MP, the backwashing time is 8 seconds, continue to filter after the backwashing, the filtered TiCl 4 The gas enters the leaching tower to condense and then enters the thickener, allowing the remaining liquid slag to settle naturally to obtain TiCl with a solid content of 0.5%. 4 products; in order to further improve the TiCl 4 The purity of the liquid, the TiCl in the thickener 4 After the liquid overflows to the low-level storage tank, it is pressed into the high-level tank by a booster pump, and the TiAl intermetallic compound filte...

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PUM

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Abstract

The invention relates to a new use of TiAl intermetallic compound porous material and a method of producing TiCl4. The invention provides a new use of TiAl intermetallic compound porous material in high temperature gas-solid separation, which is able to improve the filter fineness and simplify the production technology, realize effective separating and discharging the slag, simultaneously, avoid the environmental pollution caused by frequently changing the filter element. The invention further provides a new method of producing TiCl4, comprising: carrying out initial solid slag discharge by using a dust catcher to the rough TiCl4 gas obtained by the reduction chlorination of high titanium slag or rutile or other raw materials, adopting TiAl intermetallic compound porous material as filtering element to directly carry out the gas-solid separation, putting the filtered TiCl4 gas into a thickener or an intermediate container after condensation and other steps such that high quality TiCl4 liquid can be obtained by natural sedimentation or gas-solid separation of the solid slag left in the TiCl4 liquid. The invention provides a new choose to the chemical production process which changes the production technology, saves energy, improves the product purity and improves the environmental protection and so on by adopting the gas-solid separation.

Description

technical field [0001] The invention relates to the filtration of industrial materials, in particular to the gas-solid separation of crude gas in the industrial production process by adopting a heat-resistant and corrosion-resistant filter element. Background technique [0002] Gas products are obtained in many chemical production processes, and then undergo cooling treatment through leaching towers, condensation and circulation pump tanks, etc., and then pass through concentrators for preliminary liquid slag discharge, and then enter high-level tanks for final filtration to obtain the desired products. The filter used therein is usually a bag filter. This is mainly due to the fact that high-temperature gas containing a large amount of impurities has extremely strong corrosion properties, and traditional filter materials are limited by the insufficient corrosion resistance of the material itself under extreme conditions, so it is difficult to apply to this harsh field. Afte...

Claims

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Application Information

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IPC IPC(8): B01D39/20B01D46/00C01G23/02
Inventor 高麟贺跃辉徐进辉汪涛
Owner CHENGDU INTERMENT TECH
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