A low temperature boiling chlorination system

A chlorination system and boiling chlorination furnace technology, applied in chemical/physical processes, chemical instruments and methods, etc., can solve the problems affecting the chlorination rate of chlorination production, short residence time of raw materials, and excessive local pressure, etc. Reduce the static pressure and diffusion resistance in the furnace, which is beneficial to continuous operation and suppresses the effect of reverse back mixing

Active Publication Date: 2015-08-26
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Problems solved by technology

Due to the high density of carbide slag (2.0~2.2t / m 3 ), less active ingredients lead to a higher bed in the furnace, such a furnace structure will lead to some shortcomings, such as excessive diffusion resistance, excessive local pressure, severe furnace vibration, short residence time of raw materials and uneven distribution, and The driving force of reaction and transmission will drop, etc. These problems will seriously affect the chlorination rate of chlorination production, resulting in a large amount of chlorine surplus and chlorination residue, which will bring great pressure to the production system and environment, and it will be difficult to scale up. Need to develop a kind of low temperature boiling chlorination furnace that can solve the above-mentioned technical problems

Method used

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  • A low temperature boiling chlorination system
  • A low temperature boiling chlorination system
  • A low temperature boiling chlorination system

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Embodiment Construction

[0024] Hereinafter, the low temperature boiling chlorination system according to the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments. It should be noted that the carbide slag mentioned in the present invention is the blast furnace slag obtained by smelting ilmenite (such as vanadium-titanium magnetite) through blast furnace smelting and then forms after carbonization, which can contain 10-14wt% titanium carbide (TiC ).

[0025] figure 1 It is a schematic diagram of the front view structure of the low temperature boiling chlorination system of the exemplary embodiment of the present invention. figure 2 Yes figure 1 The enlarged schematic diagram of the relationship between the first gas distributor and the pipeline connection in . image 3 Yes figure 2 An enlarged schematic view of the middle nozzle. Figure 4 Yes figure 2 bottom view.

[0026] like figure 1 As shown, in an exemplary embodiment of th...

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Abstract

The invention provides a low-temperature boiling chlorination system. The low-temperature boiling chlorination system comprises a low-temperature boiling chlorination furnace, a feeding device and an upper deslagging pipe, wherein an upper group and a lower group of gas distributors are arranged in the low-temperature boiling chlorination furnace so as to lead in a chlorine gas taken as a reaction gas from the upper part of a reaction segment and spray a fluidized gas into the bottom of the furnace; the feeding device is used for feeding carbide slags into the bottom of the furnace; the upper deslagging pipe is arranged at the upper part of the reaction segment; and after the carbide slags enter the furnace bottom of the low-temperature boiling chlorination furnace, the carbide slags are in a fluidized state under the action of the fluidized gas and move upwards to come into countercurrent contact with the chlorine gas so as to generate a chlorination reaction. According to the low-temperature boiling chlorination system provided by the invention, the application efficiency of the chlorine gas and the chlorination rate of the carbide slags are improved; and the continuous production, the stable deslagging and the large-scale production of the low-temperature boiling chlorination system can be realized.

Description

technical field [0001] The invention relates to the technical field of low-temperature boiling chlorination reaction, and more specifically relates to a low-temperature boiling chlorination system for preparing titanium tetrachloride from carbonized blast furnace slag. Background technique [0002] At present, only Panzhihua Iron and Steel is using high-titanium blast furnace slag (TiO 2 content as high as 20-26wt%) to extract titanium tetrachloride, that is, "high temperature carbonization of blast furnace slag - low temperature selective chlorination to produce TiCl 4 "Technology, which is to use a carbonaceous reducing agent to perform high-temperature reduction carbonization treatment on high-titanium blast furnace slag in an electric furnace, and reduce titanium to titanium carbide (TiC). The blast furnace slag after carbonization treatment is called carbide slag (also known as carbonized blast furnace slag), and then the carbide slag is selectively chlorinated at low ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/24
Inventor 周艾然陆平王建鑫龙盘忠
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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