Method for cooling zirconium tetrachloride produced through fluidizing chlorination method

Abstract

The invention relates to the field of chemical production, and discloses a method for cooling zirconium tetrachloride produced through a fluidizing chlorination method. The cooling method comprises the following steps: fully mixing zircon sand / zirconium dioxide / a mixture of zircon sand and zirconium dioxide with petroleum coke powder according to a certain ratio, adding the mixture into a fluidizing chlorination furnace, introducing chlorine gas into the furnace to carry out chlorination reactions; introducing the gas generated in the chlorination reactions into a reaction gas cooling channel from the outlet of the fluidizing chlorination furnace, spraying liquid coolant into the reaction gas cooling channel to cool the reaction gas; then introducing the cooled reaction gas into a zirconium tetrachloride collecting tank, at the same time, and spraying liquid coolant into the zirconium tetrachloride collecting tank from top part or lateral side of the zirconium tetrachloride collecting tank so as to cool the reaction gas, wherein zirconium tetrachloride in a gas state is cooled and converted into zirconium tetrachloride powder, and the powder falls on the bottom of the zirconium tetrachloride collecting tank. According to the cooling method, liquid coolant is sprayed to the reaction gas so as to cool the reaction gas, the cooling effect is improved, the yield of zirconium tetrachloride is increased, and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of chemical production, in particular to a cooling method for producing zirconium tetrachloride by boiling chlorination. Background technique [0002] At present, most of the cooling devices at home and abroad that use zircon sand or zirconia or their mixture as the main raw material to produce zirconium tetrachloride by boiling chlorination are three-stage coolers in series. The chlorinated reaction gas enters the cooler, and air or circulating water is passed into the outer jacket of the cooler to cool the reaction gas through the cooler wall. Because it is gas-gas or gas-liquid indirect heat exchange, the heat transfer coefficient is restricted by the gas phase, the heat transfer coefficient is relatively small, and the heat transfer efficiency is low. When the diameter of the boiling chlorination furnace is small and the output is low, it can meet the heat transfer requirements. After the diameter of the chlorina...

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Problems solved by technology

[0003] The invention provides a cooling method for the production of zirconium tetrachloride by boiling chlorination, which solves the problem that in the prior art, after the output is expanded, the heat of the reaction gas cannot be exported through the wall of the cooler, resulting in an increase in the volume of the cooler and an increase in manufacturing cost, accounting for The technical problem is that the temperature increases greatly, the reaction gas outlet temperature is high, and the cooling effect is not ideal.

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