Prepn of high-purity aluminium chloride

An aluminum chloride and high-purity technology, applied in the direction of aluminum chloride, aluminum halide, etc., can solve problems such as continuous production impact, product quality, and removal difficulties, and achieve easy operation, environmental protection, and high recovery value. Effect

Inactive Publication Date: 2003-08-20
黄建林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ash remains in the reactor, it is very difficult to remove, and the continuous production is affected. Once it is taken out by the aluminum chloride airflow, it will be wrapped in the product during the condensation process, affecting the product quality and causing trouble for separation.

Method used

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  • Prepn of high-purity aluminium chloride
  • Prepn of high-purity aluminium chloride

Examples

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Effect test

example 1

[0035] 70 kilograms of sodium chloride, 120 kilograms of aluminum chloride, and 10 kilograms of sodium fluoride are added into the reaction kettle 1 with an internal diameter of 600 cm and a height of 1800 cm through the feed port 4, heated to 830 degrees with the heating device 2, and the stirring device 3 is started. The speed is 200-300 rpm. After adding 30 kilograms of alumina and 20 kilograms of carbon black at one time, stop heating, and then add 47.75 kilograms of alumina and 8.43 kilograms of carbon black into the reactor 1 at the same speed through the screw conveyor 6, and at the same time, 99.72 kilograms per hour Chlorine gas is added from the center of the stirring shaft 3 at a speed of 125 kg per hour after being filtered through the selective separator 5, and aluminum chloride is recovered from the collector 7, and the carbon dioxide is passed through the tail gas device 8 at a speed of 30.9 kg per hour Discharge after processing.

example 2

[0037] Add 60 kilograms of sodium chloride, 100 kilograms of aluminum chloride, and 8 kilograms of sodium fluoride into the reaction kettle 1 with an inner diameter of 600 cm and a height of 1800 cm through the feed port 4, heat it to 820 degrees with the heating device 2, start the stirring device 3, and stir The speed is 200-300 rpm. After adding 25 kilograms of alumina and 15 kilograms of carbon black at one time, stop heating. Add in the reaction kettle 1 with 38.2 kilograms of aluminum oxides per hour, 6.7 kilograms of carbon black constant speeds by screw conveyor 6 again, add chlorine from stirring 3 axle centers with the speed of 79.8 kilograms per hour simultaneously, after violent reaction, with per hour 100 After the speed of kilogram is filtered by selector separator 5, aluminum chloride is recovered from collector 7, and carbon dioxide is discharged after being treated by tail gas device 8 at a speed of 24.7 kilograms per hour.

[0038] It needs to be specially e...

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Abstract

The preparation process of high-purity aluminum chloride includes the following steps: adding NaCl, AlCl3 and sodium fluoride in the weight ratio of 30-40 to 50-60 to 1-10 into reactor to form the mixture mother liquid, heating the mother liquid to 800-830 deg.c; adding the mixture alumina and carbon blank in the weight ratio of 5.7:1 and chlorine in 11.8 units into the reactor while stirring for reaction with the mother liquid; sectionally condensating and recovering the produced gas and eliminating impurities in different temperature sections to obtain high-purity aluminum chloride; and treating and recovering tail gas. The said process has the advantages of easy-to-obtain material, low production cost, simple process, high product purity, no environmental pollution, etc.

Description

1. Technical field [0001] The invention belongs to the technical transformation of the production process of aluminum chloride, and specifically relates to a preparation method of high-purity aluminum chloride. 2. Background technology [0002] Anhydrous aluminum chloride is an important inorganic chemical product, mainly used in the manufacture of alkylating agents for detergents, organic synthesis catalysts, hydrocarbon resins, titanium dichloride nucleating agents, dye intermediates, cosmetics and drugs, etc. It is also used in electrolytic aluminum production in foreign countries, and accounts for more than 60% of the consumption of aluminum chloride. [0003] The production of anhydrous aluminum chloride began in 1825, and more than 20 methods have been studied so far, which are mainly divided into three categories from the process route: namely: metal aluminum chlorination method, alumina chlorination method and electrochemical method. Except that the electrochemical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/56C01F7/60
Inventor 黄建林
Owner 黄建林
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