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Method for stirring boiling chlorination furnace and method for preparing titanium tetrachloride

A technology of boiling chlorination furnace and titanium tetrachloride, which is applied in the direction of titanium halide, can solve the problems of environmental pollution and long start-up time, and achieve the effects of increasing annual output, short start-up time and simple facilities

Inactive Publication Date: 2013-05-29
PANGANG GROUP RESEARCH INSTITUTE CO LTD +1
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Problems solved by technology

[0003] The object of the present invention is to solve the problems of the prior art fluidized chlorination furnace starting time is too long and pollute the environment, and to provide a method for starting a fluidized chlorination furnace with short starting time, simple facilities, easy operation and environmental protection And the method for preparing titanium tetrachloride

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  • Method for stirring boiling chlorination furnace and method for preparing titanium tetrachloride

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preparation example Construction

[0021] According to the method for preparing titanium tetrachloride of the present invention, there is no special restriction on the ventilation rate of the chlorine gas that is passed into the boiling chlorination furnace, and it can be the conventional ventilation in the art that can react with titanium-containing raw materials to obtain titanium tetrachloride. Quantity, preferably, relative to per ton of titanium-containing raw materials, the ventilation rate of chlorine gas under standard conditions is 80m 3 / h-600m 3 / h; more preferably, relative to per ton of titanium-containing raw materials, the ventilation rate of chlorine gas is 100m 3 / h-400m 3 / h; most preferably, relative to per ton of titanium-containing raw materials, the ventilation rate of chlorine gas under standard conditions is 200m 3 / h-350m 3 / h. Wherein, the purity of the chlorine gas can vary within a wide range, preferably, 50-100% by volume. The above standard state refers to 25°C and 1 atmospher...

Embodiment 1

[0028] This embodiment is used to illustrate the start-up of the fluidized chlorination furnace provided by the present invention and the preparation method of titanium tetrachloride.

[0029] 1) According to figure 1 The shown technological process carries out the start-up of boiling chlorination furnace:

[0030] a. Add 500kg of blast furnace slag carbide slag (the content of TiC is 8% by weight) to the chlorination furnace with a diameter of 800mm in advance, feed nitrogen to make the bed bubbling or make the titanium-containing raw material in a fluidized state, nitrogen in the furnace The superficial gas velocity is 0.1m / s, and the purity of nitrogen is 95% by volume;

[0031] b. Continue to pass the preheated hot nitrogen gas into the chlorination furnace through the heating furnace (the furnace temperature of the normal working furnace is controlled at 650 °C, and the outlet temperature is stable at 550 °C), and the hot nitrogen gas passes through the material bed. Ca...

Embodiment 2

[0034] This embodiment is used to illustrate the start-up of the fluidized chlorination furnace provided by the present invention and the preparation method of titanium tetrachloride.

[0035] 1) According to figure 1 The shown technological process carries out the start-up of boiling chlorination furnace:

[0036] a. Add 2000kg of blast furnace slag carbide slag (the content of TiC is 11% by weight) to the chlorination furnace with a diameter of 800mm in advance, feed nitrogen to make the bed bubbling or make the titanium-containing raw material in a fluidized state, nitrogen in the furnace The superficial gas velocity is 0.2m / s, and the purity of nitrogen is 90% by volume;

[0037] b. Pass the preheated hot nitrogen gas into the chlorination furnace through the heating furnace (the temperature of the furnace for normal operation of the heating furnace is controlled at 700 ° C; the outlet temperature is stable at 600 ° C), and the hot nitrogen gas preheats the titanium-conta...

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Abstract

The invention discloses a method for stirring a boiling chlorination furnace and a method for preparing titanium tetrachloride. The method for stirring the boiling chlorination furnace comprises the steps of: adding a titanium-containing material in the boiling chlorination furnace and introducing high-temperature non-oxide gas into the boiling chlorination furnace, wherein the temperature and the gas velocity of the high-temperature non-oxide gas enable the temperature of the added titanium-containing material to reach furnace stirring temperature, and the titanium-containing material is a titanium-containing substance for producing the titanium tetrachloride. The method for stirring the boiling chlorination furnace has the characteristics of short furnace stirring time, simple facility, operation easiness, good environment-friendly effect, and the like; and the shortened furnace stirring time is certainly beneficial to reduction of material and labor costs, increase of production time and increase of annual output.

Description

technical field [0001] The invention relates to a method for starting a fluidized chlorination furnace and a method for preparing titanium tetrachloride; in particular, it relates to a method for starting a fluidized chlorination furnace with short starting time, simple facilities, easy operation and environmental protection, and Process for preparing titanium tetrachloride. Background technique [0002] The production of titanium tetrachloride by boiling chlorination is one of the important processes in the production of titanium dioxide and sponge titanium by the chlorination method. This process generally uses titanium-containing raw materials and chlorine gas for chlorination reaction in a chlorination furnace to obtain important intermediate products in the titanium industry. Titanium tetrachloride. At present, in the industrial production in this field, the starting method of the fluidized chlorination furnace is generally to use firewood and coke to burn at the botto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/02
Inventor 陆平刘森林陈祝春张苏新杨仰军
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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