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Normal-temperature synthesis method of tin tetrachloride

A technology for the synthesis of tin tetrachloride at normal temperature, which is applied in the direction of tin chloride and tin halide, etc., can solve the problems of chlorine gas channel blockage and low yield of tin tetrachloride, etc., and achieve the effect of improving capacity and continuous and stable production

Inactive Publication Date: 2015-06-24
HAIMEN JINQILIN REDWOOD INVESTMENT DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the frequent blockage of the chlorine passage in the above-mentioned prior art, the shortcomings such as the low yield of tin tetrachloride, provide a kind of method that does not adopt gas and solid heterogeneous reaction, and the yield of tin tetrachloride is quite high New method with great results

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Example 1 In a φ200×6 normal-pressure reactor, 70kg of tin was put into tin tetrachloride liquid to submerge it, and a trace amount of metallic carbon nanotubes was added. The average temperature of the kettle is 30°C, and the pressure inside the kettle is 1.6Pa. Chlorine gas flow rate 1.6m3 / h, reaction 22 hours, obtain tin tetrachloride 152.8kg, tin tetrachloride yield 99.56%, chlorine utilization rate 98.9%.

Embodiment 2

[0008] In a φ200×6 normal-pressure reactor, put 70kg of tin into tin tetrachloride liquid to submerge it, and add a trace amount of metallic carbon nanotubes. The average temperature of the kettle is 25° C., the pressure in the kettle is 0.916 Pa, and the chlorine gas flow rate is 1.2 m3 / h. After 23 hours of reaction, 148 kg of tin tetrachloride is obtained, the yield of tin tetrachloride is 96.43%, and the utilization rate of chlorine gas is 92%.

Embodiment 3

[0010] In a φ200×6 normal-pressure reaction kettle, put 70kg of tin into tin tetrachloride liquid, and add trace metallic carbon nanotubes. The average temperature of the kettle is 30°C, the pressure inside the kettle is 1.32Pa, and the flow rate of chlorine gas is 1.2m3 / h, reacted for 24 hours, obtained 150.5 kg of tin tetrachloride, the yield of tin tetrachloride was 98.06%, and the utilization rate of chlorine gas was 97%.

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PUM

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Abstract

The invention discloses a normal-temperature synthesis method of tin tetrachloride. The normal-temperature synthesis method comprises the following steps: immersing tin into tin tetrachloride liquid, adding metallic carbon nanotubes, further introducing chlorine gas, controlling the temperature in a kettle at 20-30 DEG C, controlling the pressure at 1-3Pa and controlling the flow rate of chlorine gas at 1-3m<3> / h. Tin tetrachloride is prepared by adopting gas-liquid-solid heterogeneous reaction, the metallic carbon nanotubes are taken as an auxiliary catalyst, the yield is greatly improved in comparison with gas-solid heterogeneous reaction, the improving capability can be improved by 5 times or more, and continuous and stable production can be realized.

Description

technical field [0001] The present invention relates to a kind of manufacture method of inorganic compound, more specifically, the present invention relates to a kind of normal temperature synthetic method of tin tetrachloride. Background technique [0002] At present, the gas and solid heterogeneous reaction method is usually used to manufacture tin tetrachloride. Because the reaction of tin and chlorine is an exothermic reaction, the reaction temperature exceeds the melting point of tin (231.5° C.) in a very short period of time, so the melting of tin often leads to blockage of the chlorine gas channel during the reaction process, thereby causing shutdown. In addition, because the flow of chlorine gas in the tin ingot is a channel flow, the contact area of ​​chlorine gas on the tin surface is small and the residence time is short, resulting in low utilization rate of chlorine gas and affecting the yield of tin tetrachloride. At the same time, because the chlorine content ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G19/08
Inventor 孙建豪
Owner HAIMEN JINQILIN REDWOOD INVESTMENT DEV
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