High-temperature-resistant corrosion-resistant furnace body for fluidizing chlorination furnace and manufacturing method of high-temperature-resistant corrosion-resistant furnace body

Abstract

The invention provides a high-temperature-resistant corrosion-resistant furnace body for a fluidizing chlorination furnace and a manufacturing method of the high-temperature-resistant corrosion-resistant furnace body. On the inner wall of a shell, a plurality of installation assemblies are arranged along the axial direction of the shell; an anticorrosive coating made from sodium silicate, diabase powder and sodium silicofluoride is coated on the inner wall of the shell and the installation assemblies; a heat-insulation thermal-insulation casting layer is arranged on the anticorrosive coating; all installation assemblies are fixedly connected to the heat-insulation thermal-insulation casting layer; a heat-insulation thermal-insulation wall built by diatomite bricks is adhered on the surface of the heat-insulation thermal-insulation casting layer; a fire-resistant corrosion-resistant casting layer is adhered on the inner wall of the heat-insulation thermal-insulation wall; and a fire-resistant corrosion-resistant wall built by baking-free bricks is adhered on the surface of the fire-resistant corrosion-resistant casting layer. The high-temperature-resistant corrosion-resistant furnace body disclosed by the invention can be used for prolonging the service life and the repair cycle of the furnace body, lowering the production cost, preventing the flue gas from leaking to pollute the environment, and guaranteeing the safety of the working environment and the workers of the plant.

Description

technical field [0001] The invention belongs to the technical field of titanium tetrachloride production, and relates to a chlorination furnace body, in particular to a high-temperature-resistant and corrosion-resistant furnace body for a fluidized chlorination furnace; the invention also relates to a chlorination furnace body production method. Background technique [0002] The chlorination reaction in the boiling chlorination furnace is to chemically react high-titanium slag or rutile with chlorine gas under the reduction and catalysis of activated carbon at a certain temperature to generate titanium tetrachloride flue gas and other products. In boiling chlorination, the carbochlorination reaction of high titanium slag or rutile is an exothermic reaction. When the temperature reaches the reaction temperature, the chlorination reaction can be carried out by the generated reaction heat, and the larger the furnace type, the easier it is to reach the reaction heat temperat...

AI Technical Summary

Problems solved by technology

At present, the furnace body of the fluidized chlorination furnace only uses refractory castables, and the main components of refractory castables are calcium oxide and magnesium oxide, which will react with chlorine gas at high temperature. Although the high temperature resistance is good, it is resistant to high temperature chlorine gas corrosion and smoke The scouring effect is poor. After the castable layer is damaged, the entire furnace body needs to be overhauled, resulting in a low production rate and difficult maintenance. How to improve the corrosion resistance, erosion resistance and high temperature resistance of the furnace lining and use refractory materials reasonably , so as to obtain a longer furnace life and maintenance cycle has become an urgent technical problem in the boiling chlorination process

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