Treatment method for chlorinated waste generated during production of TiC14

A treatment method and waste technology, applied in the direction of titanium halide, etc., can solve problems such as chloride smoke and dust pollution of the environment, and achieve the effect of reducing costs

Inactive Publication Date: 2012-11-07
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of production TiCl 4 Produce the processing method of chlorinated waste, this method is in the production TiCl 4 In the process of chlorinated waste coming out of the furnace, alkaline substances are directly or indirectly covered on the surface of the chlorinated waste, which solves the problem that the chlorinated waste produces chloride smoke and pollutes the environment during the process of being discharged from the furnace

Method used

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  • Treatment method for chlorinated waste generated during production of TiC14
  • Treatment method for chlorinated waste generated during production of TiC14
  • Treatment method for chlorinated waste generated during production of TiC14

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Embodiment one: if figure 1 The schematic diagram of treating chlorinated waste molten salt is shown in the furnace. In the process of chlorinated waste molten salt 6 coming out of the furnace, a porous iron plate 3 is added on the iron bowl 7 holding the waste molten salt through the metal conduit 1, and a porous iron plate 3 is placed between the iron bowl 7 holding the waste molten salt and the porous iron plate 3. Use wet bentonite 4 to seal between them, and cover the carbide slag 2 on the porous iron plate 3, so that the carbide slag absorbs the gas 5 produced by the waste molten salt in the air during the discharge process of the waste molten salt, preventing the chlorination of the waste molten salt. Salt produces chloride fumes during the process of being baked and pollutes the environment.

Embodiment 2

[0019] Embodiment two: as figure 1 The schematic diagram of treating chlorinated waste molten salt is shown in the furnace. In the process of chlorinating the waste molten salt 6 out of the furnace, a porous steel plate 3 is added on the iron bowl 7 containing the waste molten salt through the metal conduit 1, and a porous steel plate 3 is used between the iron bowl 7 containing the waste molten salt and the porous steel plate 3. Wet attapulgite 4 is sealed, and covers quicklime 2 on the porous iron plate 3, so that quicklime absorbs the gas 5 produced by the waste molten salt meeting air in the discharge process of the waste molten salt, so as to prevent the chlorination of the waste molten salt in the air. Chloride fumes are produced during the furnace process to pollute the environment.

Embodiment 3

[0020] Embodiment three: as figure 1 The schematic diagram of treating chlorinated waste molten salt is shown in the furnace. In the process of chlorinating the waste molten salt 6 out of the furnace, a porous steel plate 3 is added on the iron bowl 7 containing the waste molten salt through the metal conduit 1, and a porous steel plate 3 is used between the iron bowl 7 containing the waste molten salt and the porous steel plate 3. Wet calcium-based bentonite 4 is sealed, and covered with slaked lime 2 on the porous iron plate 3, so that slaked lime has just absorbed the gas 5 produced by the waste molten salt meeting air in the discharge process of the waste molten salt, so as to prevent the chlorination of the waste molten salt in the air. Chloride fumes are produced during the furnace process to pollute the environment.

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Abstract

A treatment method for chlorinated waste generated during production of TiC14 relates to a method for treating chlorinated waste. During discharging of the chlorinated waste, alkaline matters are coated on the surface of the chlorinated waste, dry alkaline matters are in contact with the chlorinated waste directly, and water-bearing alkaline matters are covered with the dry alkaline matters and then are in contact with the chlorinated waste; or the alkaline matters are covered with a steel plate or an iron plate with breather holes and then are in contact with the chlorinated waste; the space between metalware containing the chlorinated waste and the steel plate or the iron plate with the breather holes is sealed with wet clay; clay between the metalware containing the chlorinated waste and the steel plate or the iron plate with the breather holes is sealed; and the chlorinated waste is covered with the alkaline matters containing sodium series and lime series after being poured out of a container containing chlorinated waste salt. Through the treatment method, the long-standing problem that the environment is polluted during the discharging of waste salt and waste slag when TiC14 is prepared by the chloride process is solved, industrial waste such as calcium carbide sludge, magnesium slag and caustic sludge can be utilized, and the cost for preparing the chlorinated waste is lowered greatly.

Description

technical field [0001] The invention relates to a method for processing chemical waste, in particular to a method for producing TiCl 4 Disposal methods for chlorinated wastes. Background technique [0002] At present, there are two main production methods for titanium tetrachloride used in the world's titanium industry, boiling chlorination and molten salt chlorination. Generally, countries that use high-grade raw materials to produce titanium tetrachloride use the boiling chlorination method: for raw materials containing higher calcium and magnesium oxides, the molten salt chlorination method is suitable, and the titanium tetrachloride produced by the molten salt chlorination method It accounts for about 40% of the world's titanium industry consumption. [0003] The boiling chlorination method carries out the chlorination reduction reaction in the chlorination furnace, and the mixture from the top of the chlorination furnace passes through the cyclone dust collector to s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/02
Inventor 曹大力
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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