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Technology for preparing cuprous chloride crystal by hydrothermal reduction method

A technology of cuprous chloride and reduction method, applied in copper halide and other directions, can solve the problems of high energy consumption, complex process and environmental pollution in wastewater recovery

Inactive Publication Date: 2006-10-25
YANCHENG TEACHERS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chlorine method is mainly due to large investment in equipment, complicated process, and difficult control; the use of metal copper reduction method uses a large amount of water in hydrolysis, and the energy consumption of waste water recovery is high.
However, general manufacturers do not recycle, which not only wastes raw materials but also pollutes the environment; 2 SO 3 or SO 2 Although the reduction method is simple, the cost is high, and a large amount of acid mist is generated to pollute the environment, and the obtained cuprous chloride has a fine particle size and is not easy to filter, and the product is also easy to oxidize
[0009] The above several preparation methods all have the following two common problems: 1. cause pollution to the environment; 2. the sodium chloride raw material is basically disposable, the waste of raw materials is great, and the energy consumption in the production process is generally higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add metered water-soluble divalent copper salt and water-soluble chloride into the pressure-resistant and corrosion-resistant reactor, where n Cl / n Cu =A (1) , then add metered water and heat and stir to dissolve all the materials, add the corresponding acid to adjust the [H + ] Concentration at pH=B (1) , and then add a metered amount of reducing agent R (1) , the control temperature is T (1) , sealed and heated for reduction reaction, the reaction time is t (1) . After stopping the heating and cooling to room temperature, the cuprous chloride crystals were sucked out, and the target product S (1) was obtained by acid washing, water washing, alcohol washing, drying, etc. according to conventional methods.

Embodiment 2

[0019] Add metered water-soluble divalent copper salt and water-soluble chloride into the pressure-resistant and corrosion-resistant reactor, where n Cl / n Cu =A (2) , then add metered water and heat and stir to dissolve all the materials, add the corresponding acid to adjust the [H + ] Concentration at pH=B (1) , and then add a metered amount of reducing agent R (1) , the control temperature is T (1) , sealed and heated for reduction reaction, the reaction time is t (1) . After stopping the heating and cooling to room temperature, the cuprous chloride crystals were sucked out and subjected to pickling, water washing, alcohol washing and drying according to conventional methods to obtain the target product S(2).

Embodiment 3

[0021] Add metered water-soluble divalent copper salt and water-soluble chloride into the pressure-resistant and corrosion-resistant reactor, where n Cl / n Cu =A (1) , then add metered water and heat and stir to dissolve all the materials, add the corresponding acid to adjust the [H + ] Concentration at pH=B (2) , and then add a metered amount of reducing agent R (1) , the control temperature is T (1) , sealed and heated for reduction reaction, the reaction time is t (1) . After stopping the heating and cooling to room temperature, the cuprous chloride crystals were sucked out and subjected to pickling, water washing, alcohol washing and drying according to conventional methods to obtain the target product S(3).

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PUM

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Abstract

The invention is a technique for preparing cuprous chloride crystals with hydrothermal reduction, a truly original economic and environmental- protection method for producing cuprous chloride crystals, comprising the steps of: batching, dissolving, reacting, separating, post processing, etc, i.e. preparing water soluble divalent copper salt and water soluble fluoride into a mixed solution, placing still and filtering out nonsoluble impurities, using corresponding acid to regulate the [H+] concentration of the mixed solution, transferring the feed liquid into a pressure- resistant and corrosion-resistant reaction kettle, then calculating and adding in reducer, sealing and heating to not lower than 50 deg.C, making hydrothermal reaction for less than 48 h, and directly obtaining cuprous chloride crystals, cooling and filtering, then processing the obtained crystals by acid washing, water washing, alcohol washing, drying, etc, to obtain target product, where the mother filtrate can be recycled.

Description

technical field [0001] The invention relates to a method for preparing cuprous chloride crystals by a hydrothermal reduction method, which belongs to the technical field of inorganic synthesis in the chemical industry. Background technique [0002] Cuprous chloride product is an important chemical raw material, which can be used to prepare phthalocyanine pigments, additives in insecticides and preservatives, desulfurization and decolorization agents in petrochemical industries, denitrification agents for nitrocellulose, soaps and fats Coagulant in organic synthesis, catalyst in organic synthesis, reducing agent in dye industry and used in battery, electroplating and pharmaceutical industries. [0003] At present, the industrial production of cuprous chloride mainly has the following methods: [0004] ① Scrap copper air oxidation method: use copper wire (copper sheet, copper powder) with hydrochloric acid and sodium chloride as raw materials, and react with air to prepare th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/04
Inventor 王宝罗彭秉成陶为华
Owner YANCHENG TEACHERS UNIV
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