A flash suspension chlorination method for titanium-containing raw materials

A titanium raw material, titanium tetrachloride technology, applied in the direction of titanium tetrachloride, titanium halide, etc., can solve the problems of strict impurity indicators of titanium-containing raw materials, achieve sufficient gas-solid contact area and time, ensure separation efficiency, and run The long-term effect

Active Publication Date: 2017-01-25
SICHUAN HONGDA (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem that the existing fluidized chlorination technology has strict requirements on the impurity index of titanium-containing raw materials, so that the titanium-containing raw materials in Panxi area of ​​my country can be applied to the chlorination titanium dioxide process

Method used

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  • A flash suspension chlorination method for titanium-containing raw materials
  • A flash suspension chlorination method for titanium-containing raw materials
  • A flash suspension chlorination method for titanium-containing raw materials

Examples

Experimental program
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Embodiment 1

[0054] This embodiment is a flash suspension chlorination method for titanium-containing raw materials, and its schematic diagram is as follows figure 1 shown.

[0055] The reaction is carried out by using a reaction furnace with a reaction chamber and an evacuation chamber. The reaction chamber and the evacuation chamber are separated from each other by a partition to form a U-shaped communication structure. When the flash suspension chlorination process is working, first use the heat preservation nozzle in the furnace to spray natural gas and air into the furnace to raise the temperature in the furnace. The hot air makes the temperature in the furnace reach 550~1000°C, and slowly inject carbon-containing fuel through the heat preservation nozzle. At this time, the charcoal-containing fuel is ignited in the furnace, so that the temperature in the furnace reaches the normal reaction temperature of 600~1000°C. After maintaining this temperature, stop adding air into the furnace...

Embodiment 2

[0077] Reactor equipment

[0078] Such as Figure 1-4 As shown, the suspension chlorination furnace for producing titanium tetrachloride includes a vertical furnace body 1, and a partition plate 9 is arranged in the middle of the vertical furnace body 1 to separate the furnace chamber into a reaction chamber 1a and an emptying chamber 1b. The lower part of the reaction chamber 1a and the evacuation chamber 1b are connected, and the two form a U-shaped flow channel. The conical furnace bottom 2 is arranged at the bottom of the vertical furnace body 1, and the conical furnace bottom 2 has a slagging outlet 2a. An exhaust flue 3 is provided in the upper part of the evacuation chamber 1b. A swirl flow dispersing nozzle 4 is installed on the top of the reaction chamber 1 a for spraying chlorine gas and titanium-containing raw materials into the reaction chamber 1 a in the vertical furnace body 1 . A furnace heat preservation nozzle 5 is installed on the side of the reaction cha...

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Abstract

The invention relates to a flash suspension chlorination method for raw materials containing titanium. The flash suspension chlorination method includes the steps that a reaction furnace with a reaction chamber and an evacuation chamber is used for reaction, a partitioning plate is used for separating the reaction chamber from the evacuation chamber, and the bottoms of the reaction chamber and the evacuation chamber are communicated to form a U-shaped communicated structure; a reducing atmosphere condition is formed inside the reaction chamber, chlorine is used as carrier gas, and the raw materials containing titanium are sprayed into the reaction chamber from the top or the top side of the reaction chamber, the raw materials containing titanium and chlorine are kept in a stable suspension state inside the reaction furnace, and the temperature is stabilized below 500-1200 DEG C for reaction; a residue discharging opening is formed in the bottom of the reaction furnace, solid powder and fused adhesive impurities generated by the reaction are discharged from the residue discharging opening, and generated crude titanium tetrachloride products are collected at an outlet in the top of the evacuation chamber. The invention further discloses a chlorination reaction furnace device used for the reaction. According to the chlorination technology, the raw materials, containing titanium, high in CaO and MgO content can be used, and the problem that low-melting-point molten mass blocks equipment is solved.

Description

technical field [0001] The invention relates to a synthesis process of titanium tetrachloride, in particular to a method for preparing crude titanium tetrachloride by chlorination of titanium-containing raw materials, which belongs to the field of chemical industry. Background technique [0002] At present, the chlorination reaction in the chlorination titanium dioxide industry generally adopts the fluidized chlorination process. The basic structure of the chlorination reaction furnace used is: it is composed of a furnace body, an air flow It consists of three parts: top, furnace body and furnace bottom. In the process of preparing crude titanium tetrachloride from titanium-containing raw materials, carbon-containing fuel and high-titanium slag are mixed by a mixer, and then enter the chlorination furnace body through a feeding screw machine, and chlorine gas is passed into the furnace body from the bottom of the furnace body, and passed through the control The flow rate of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/02
CPCC01G23/022
Inventor 黄建军渠建林杨守明刘义明代应红黄涛周海荣王渊
Owner SICHUAN HONGDA (GRP) CO LTD
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