Lining structure of boiling chlorination furnace

Abstract

The invention discloses a lining structure of a boiling chlorination furnace. The lower part of the boiling chlorination furnace is a cylindrical boiling section, the middle part of the boiling chlorination furnace is a transition section in a round platform shape, and the upper part of the boiling chlorination furnace is a cylindrical amplifying section. The lining structure of the boiling chlorination furnace is a layered structure and sequentially provided with an acid-resisting coating (1), an acid-resisting castable layer (2), a heat insulating layer and a first refractory brick layer (4) from outside to inside. The invention has simple construction, large temperature operation space, stable using property, long service life, ensured product quality and capability, safe operation andlow operation and maintenance cost.

Description

technical field [0001] The invention relates to a production equipment of sponge titanium, in particular to a lining structure of a fluidized chlorination furnace. Background technique [0002] At present, in the early stage of sponge titanium production, it is required to pass chlorine gas into the boiling furnace titanium ore raw material (the main component is TiO 2 ) reacts to generate TiCl 4 , the temperature of the reaction center is as high as 1200°C, and the general refractory lining structure is used in the prior art. The defects of this lining structure are: 1) Under the action of severe erosion and friction of the gas-solid two-phase in the furnace, the lining of the innermost layer of the furnace is severely worn, which not only causes differences in fluidization quality due to uneven air distribution , but also shorten the service life and even cause accidents due to the damage of the inner lining; 2) A large amount of chlorine gas leaks from the brick joints,...

AI Technical Summary

Problems solved by technology

The defects of this lining structure are: 1) Under the action of severe erosion and friction of the gas-solid two-phase in the furnace, the lining of the innermost layer of the furnace is severely worn, which not only causes differences in fluidization quality due to uneven air distribution , but also shorten the service life and even cause accidents due to the damage of the inner lining; 2) A large amount of chlorine gas leaks from the brick joints, corrodes the exposed metal shell at high temperature, and destroys the airtight condition of the furnace to affect production, and at the same time, it affects the safety of the operator. threat to life

Obviously, the existing lining structure of fluidized chlorination furnace is not ideal enough

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