Method for preparing anhydrous stannic chloride

A technology of anhydrous tin tetrachloride and tin tetrachloride, which is applied in the field of deep processing of tin, can solve the problems of violent smoke generation, cumbersome operation, and consumption of large metal tin, and achieves convenient collection, sufficient reaction, and increased yield Effect

Active Publication Date: 2016-06-15
广东千千省化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is cumbersome to operate, violently smokes when transferring the product, deteriorates the operating environment, and affects the synthesis efficiency and quality
And the gas-solid reaction mode of this metal tin particle and chlorine needs to consume a large amount of metal tin, and reaction yield is low, and productive rate is lower

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] The method for preparing anhydrous tin tetrachloride of the present invention, it adopts the following steps:

[0026] First melt the tin particles, and then spray the molten tin fluid vertically onto the surface of the high-speed rotating roller through the nozzle; there are several spherical grooves on the surface of the roller, and the fluid that can be sprayed onto the surface of the roller flows into the groove to prolong the stay of the fluid on the surface Time, make it properly cooled, so that the particle size uniformity of the fluid in the groove is better after being thrown to the atomization chamber; The diameter of the opening on the surface of the roller is preferably 0.5-1mm, and the mass flow rate of the fluid injection should be 6-8g / s, the vertical distance between the nozzle and the roller is 0.01-0.1mm, and the diameter of the roller used at the same time is 40 —50mm, the rotation speed of the roller is 300-350r / min; the tin droplets thrown to the at...

Embodiment 1

[0030] The tin particles are melted, and then the molten tin fluid is sprayed vertically to the surface of the rotating roller with grooves through the nozzle; the opening diameter of the groove on the surface of the roller is 0.5mm, the mass flow rate of the fluid injection is 6g / s, the nozzle and The vertical distance between the rollers is 0.01mm, the diameter of the rollers is 40mm, and the rotation speed of the rollers is 300r / min; at the same time, in the atomization chamber, the angle with the horizontal direction is maintained at 45°, and the angle is 0.15m 3 / h, 30m / s flow rate into the tin drop chlorine gas impact and react, the reaction temperature maintained at 100 ℃; then spray the mixture in the atomization chamber to the collection chamber, and then collect liquid tin tetrachloride from the bottom of the collection chamber, and finally the liquid Tin tetrachloride is gasified and condensed to obtain anhydrous tin tetrachloride. After analysis, the purity of anhy...

Embodiment 2

[0032] The tin particles are melted, and then the molten tin fluid is sprayed vertically to the surface of the rotating roller with grooves through the nozzle; the opening diameter of the groove on the surface of the roller is 0.7mm, the mass flow rate of the fluid injection is 7g / s, the nozzle and The vertical distance between the rollers is 0.05mm, the diameter of the rollers is 45mm, and the rotation speed of the rollers is 320r / min; at the same time, in the atomization chamber, the angle between the horizontal direction and the horizontal direction is maintained at 60° and the rotation speed is 0.12m 3 / h, 30m / s flow rate into the chlorine gas impact tin droplets and react, the reaction temperature is maintained at 125 ° C, and then spray the mixture in the atomization chamber to the collection chamber, and then collect liquid tin tetrachloride from the bottom of the collection chamber, and finally the liquid Tin tetrachloride is gasified and condensed to obtain anhydrous t...

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PUM

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Abstract

The invention relates to the field of deep processing of tin, in particular to a process for preparing anhydrous stannic chloride. The process comprises the following steps: tin particles are melted; a fluid formed after melting of the tin particles is perpendicularly sprayed to the surface of a roller rotating at a high speed from top to bottom through a spray nozzle; the fluid is thrown to an atomization chamber on one side due to rotation of the roller, and tin drops are formed; chlorine is introduced to the atomization chamber from bottom to top to be subjected to a reaction with the tin drops; the mixture is sprayed to a collection chamber on one side of the atomization chamber; chlorine is collected from the upper side of the collection chamber; liquid stannic chloride is collected from the lower side of the collection chamber; the collected chlorine is conveyed to the atomization chamber again to be recycled; the collected liquid stannic chloride is gasified and condensed, and the anhydrous stannic chloride is obtained. The sprayed fluid is broken under centrifugal force of the rotating roller, chlorine collides with the tin drops at a high speed and is mixed sufficiently with the tin drops to be subjected to a reaction, the reactants can be sufficiently mixed and then sprayed to the collection chamber through a sprayer, and collection of a product and chlorine is greatly facilitated.

Description

technical field [0001] The invention relates to the field of deep processing of tin, in particular to a method for preparing anhydrous tin tetrachloride. Background technique [0002] Tin tetrachloride is the main raw material of organotin compounds, and the international consumption of organotin compounds used in PVC products and heat stabilizers is increasing year by year. Anhydrous tin tetrachloride can be used as a raw material and chlorinating agent for organotin synthesis, coal softener in the textile industry, manufacturing blueprints, photosensitive paper, additives for lubricating oil, and tin plating. At present, most of the contracts for tin tetrachloride are intermittent operations in which tin particles or anhydrous stannous chloride react with chlorine gas. When the amount of preparation is large, it is necessary to stop the reaction halfway, take out the liquid product again and again, then replenish tin particles, and then continue to introduce chlorine gas....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G19/08
CPCC01G19/08C01P2006/80
Inventor 易鉴荣林荔琍唐臻吴坚林荔珊
Owner 广东千千省化工有限公司
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