Titanium tetrachloride production system and method for recycling titanium tetrachloride from slurry

Abstract

The invention provides a titanium tetrachloride production system and method for recycling titanium tetrachloride from slurry. The titanium tetrachloride production system comprises a chlorination furnace, a dust collection condenser and a slag ladle, wherein a torrential rinsing pipe is vertically arranged on the top of the dust collection condenser, the upper end of the torrential rinsing pipe is communicated with an exhaust gas outlet of the chlorination furnace, and a torrential rinsing spray head with an upward nozzle is arranged in the torrential rinsing pipe and is fixedly connected with a slurry feed pipe. The method comprises the following steps that: the slurry is fed into the slurry feed pipe and is upwards sprayed out from the torrential rinsing spray head, wherein the flow rate of the sprayed slurry is no less than 4m<3> / h; the temperature of exhaust gas at the outlet of the chlorination furnace is controlled, so that the exhaust gas reversely collides with the atomized slurry sprayed out by the torrential rinsing spray head and is torrentially rinsed and washed; solid particles separated out fall into the dust collection condenser and are removed by the system; the exhaust gas which is torrentially rinsed and washed enters the dust collection condenser, and then enters a subsequent elution system through gravity settling and temperature reduction, and formed titanium tetrachloride supernatant is filtered and then enters a product tank; and the slurry enters a slurry header tank and is reused. The titanium tetrachloride production system has high recovery rate and is easy to control in an operation process.

Description

technical field [0001] The invention belongs to the technical field of titanium tetrachloride production and recovery, relates to a titanium tetrachloride production system, in particular to a titanium tetrachloride production system capable of recovering titanium tetrachloride from mud by utilizing turbulent washing technology; the present invention It also relates to a method for recovering titanium tetrachloride from the slurry produced by the production system. Background technique [0002] During the crude titanium tetrachloride production process, a large amount of high-boiling point chlorides contained in the flue gas at the outlet of the fluidized chlorination furnace and solid particle impurities entrained with the air flow are mostly separated from titanium tetrachloride after dust collection and condensation; but A small part of dust impurities is washed down by condensed titanium tetrachloride during leaching, enters the liquid crude titanium tetrachloride, is se...

AI Technical Summary

Problems solved by technology

The mud at the bottom of the settling tank or the mud returned from the refining process is transported to the mud head tank through the slurry pump. When the temperature of the chlorination furnace is too high, it is intermittently added into the chlorination furnace. This adding method will change the fluidized chlorination furnace. Furnace condition, difficult to control during operation

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