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Method for producing high-purity anhydrous stannic chloride

A technology of anhydrous tin tetrachloride and its production method, which is applied in the direction of tin chloride, tin halide, etc., can solve the problem of affecting the application effect and performance of tin tetrachloride, and there is no industrial purification process for large-scale production of tin tetrachloride, etc. problems, to achieve the effect of facilitating industrial production, easy control of the production process, and increasing the extrusion area

Inactive Publication Date: 2009-03-25
侯存虎
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Problems solved by technology

[0003] The main impurities contained in industrial tin tetrachloride are crystal water, divalent tin, free chlorine and metal ions, etc., which seriously affect the application effect and performance of tin tetrachloride. At present, there is no reasonable industrial purification process to achieve no Technical records of large-scale production of high-purity tin tetrachloride in water

Method used

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Embodiment Construction

[0017] The concrete production method of this high-purity anhydrous tin tetrachloride is as follows:

[0018] A commercially available quartz glass packed column is used as the rectification equipment. The packing of the quartz glass packed column is high-efficiency glass spring packing made of borosilicate glass. The high-efficiency glass spring packing has a diameter of 4.0 mm and a length of 10 mm.

[0019] The industrial tin tetrachloride used is a commercially available tin tetrachloride, its appearance is light yellow liquid, the weight content of tin tetrachloride is 90% to 98%, and the main impurities contained in it are: free chlorine>0.05% , antimony>0.06%, lead>0.02%, iron>0.05%, copper>0.01%, arsenic>0.1%.

[0020] When performing rectification, put the industrial product tin tetrachloride into a packed tower for reflux, and add metal tin with a weight percentage of 0.02 to 0.03% of the industrial product tin tetrachloride as a displacing agent, using an automatic ...

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Abstract

A method for producing anhydrous tin tetrachloride with high concentration takes tin tetrachloride of industrial goods as raw materials and is characterized in that the manufacturing method includes the following steps: metallic tin is added as displacer; a quartz glass packing tower is adopted as a rectifying plant; the tin tetrachloride of industrial goods is rectified and purified; the temperature of the tower top of the packing tower is within 112 DEG C to 117 DEG C; the temperature of the tower bottom of the packing tower is within 125 DEG C to 135 DEG C. The method for manufacturing anhydrous tin tetrachloride with high concentration does not pollute environment; the manufacturing method is easy to control; by controlling reflux ration, the production of PPm, PPb, Mos grade tetrachloride is realized and the production cost thereof is low; and the reflux control technique is simple and convenient and is convenient for commercial process. The finished products can be widely applied to the fields such as materials for photovoltaic cell and materials for photovoltaic package, medicine, synthetic rubber and stabilizer for plastics and the like.

Description

technical field [0001] The invention belongs to the technical field of purification and finishing of anhydrous tin tetrachloride, and in particular relates to a production method of high-purity anhydrous tin tetrachloride. Background technique [0002] Tin tetrachloride SnCl 4 Divided into anhydrous tin tetrachloride and crystalline tin tetrachloride, they are extremely valuable inorganic tin chemical products with considerable market vitality. From the perspective of properties and uses, anhydrous tin tetrachloride is a colorless fuming liquid, which is alkaline, dissolves in water and emits a lot of heat, and its dilute solution produces precipitation due to hydrolysis; anhydrous tin tetrachloride It is widely used as an important raw material for the synthesis of organotin compounds, catalysts for certain organic cationic polymers, printing paper and photosensitive paper, etc. From the perspective of production process, anhydrous tin tetrachloride is an intermediate of ...

Claims

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Application Information

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IPC IPC(8): C01G19/08
Inventor 侯存虎
Owner 侯存虎
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