Sealed deslagging method of fluidizing chlorination furnace

Abstract

The invention provides a sealed deslagging method of a fluidizing chlorination furnace. The sealed deslagging method comprises the following steps of: discharging slag generated in the fluidizing chlorination furnace to a sealed deslagging intermediate tank; purifying the slag by using a purge gas in the deslagging intermediate tank to obtain purified slag and mixed gases; discharging the purified slag and at least one part of mixed gases to a slag receiving tank; and enabling at least one part of mixed gases to be discharged to a tail gas system through a negative pressure pipeline connected to the tail gas system in the slag receiving tank and obtaining the purified slag from the slag receiving tank. The sealed deslagging method disclosed by the invention can be used for effectively purifying harmful gasses mingled in the slag, realizes the purpose of sealed deslagging, effectively solves the environment-friendly problem and the gas corrosion problem in the field deslagging process, is beneficial to improvement of field operation environments and has the capability of effectively prolonging the service life of equipment.

Description

technical field [0001] The invention relates to the field of boiling chlorination to produce titanium tetrachloride, in particular to a closed slagging method for a boiling chlorination furnace. Background technique [0002] The production of titanium tetrachloride by boiling chlorination is one of the important processes for the production of titanium dioxide and sponge titanium by chlorination. This process generally uses titanium-containing raw materials and chlorine gas for chlorination in a chlorination furnace, thereby obtaining an important intermediate in the titanium industry. The product is titanium tetrachloride. At present, in the process of producing titanium tetrachloride using a fluidized chlorination furnace, the slagging of the fluidized chlorination furnace has always been one of the problems that plague the on-site production. Due to the production nature of boiling chlorination, it is determined that more chlorine gas and titanium tetrachloride gas are c...

AI Technical Summary

Problems solved by technology

Due to the production nature of boiling chlorination, it is determined that more chlorine gas and titanium tetrachloride gas are contained in the boiling chlorination slag. The acid mist formed by titanium gas will immediately dissipate into the surrounding atmosphere, thereby polluting the surrounding environment and adversely affecting the production equipment and even the staff, resulting in serious equipment corrosion and environmental protection problems

[0003] Therefore, need a kind of method for effectively controlling the slagging of fluidized chlorination furnace in this field, to solve the environmental protection problem and gas corrosion problem when on-site slagging

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