Static pressure hydrothermal and hydrolytic preparing technology for cuprous chloride crystal

A technology of cuprous chloride and hydrolysis method, applied in the direction of cupric chloride, cupric halide, etc., can solve the problems of polluting the environment, wasting raw materials, and complicated processes

Inactive Publication Date: 2005-02-23
ZHEJIANG 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 process 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 large, and the energy consumption in the production process is generally higher

Method used

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  • Static pressure hydrothermal and hydrolytic preparing technology for cuprous chloride crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add a certain concentration of copper sulfate and sodium chloride mixed solution into the three-necked flask, then add excess red copper powder, use concentrated hydrochloric acid to adjust the acidity of the solution to 0.1mol / L, and connect the spherical condenser tube and exhaust gas absorption device to the middle of the flask , two dropping funnels are installed on both sides of the funnel, one for water and the other for concentrated hydrochloric acid. The flask is heated to make the material undergo a reduction reaction in boiling. During the reaction, pay attention to adding water to keep the liquid level basically unchanged. When the solution is beige and white cuprous chloride crystals are precipitated, slowly add concentrated hydrochloric acid to make the generated cuprous chloride crystals just completely generate [CuCl 2 ] - ion and dissolved, filtered while hot to remove excess copper powder; transfer the filtrate to a high-pressure reaction kettle with Fr...

Embodiment 2

[0022] Add a certain concentration of copper sulfate and sodium chloride mixed solution into the three-necked flask, then add excess red copper powder, adjust the acidity of the solution to 1mol / L with concentrated hydrochloric acid, connect the spherical condenser and tail gas absorption device in the middle of the flask, Two dropping funnels are installed on both sides of the funnel, one for water and the other for concentrated hydrochloric acid. The flask is heated to make the material undergo reduction reaction in boiling. During the reaction, pay attention to adding water to keep the liquid level basically unchanged. When the solution is beige and white cuprous chloride crystals are precipitated, slowly add concentrated hydrochloric acid to make the generated cuprous chloride crystals just completely generate [CuCl 2 ] - ion and dissolved, filtered while hot to remove excess copper powder; transfer the filtrate to a high-pressure reaction kettle with Freon lining, add an ...

Embodiment 3

[0024] Add a certain concentration of copper sulfate and sodium chloride mixed solution into the three-necked flask, then add excess red copper powder, adjust the acidity of the solution to 2mol / L with concentrated hydrochloric acid, connect the spherical condenser tube and tail gas absorption device in the middle of the flask, Two dropping funnels are installed on both sides of the funnel, one for water and the other for concentrated hydrochloric acid. The flask is heated to make the material undergo reduction reaction in boiling. During the reaction, pay attention to adding water to keep the liquid level basically unchanged. When the solution is beige and white cuprous chloride crystals are precipitated, slowly add concentrated hydrochloric acid to make the generated cuprous chloride crystals just completely generate [CuCl 2 ] - ions and dissolved, filtered while hot to remove excess copper powder; transfer the filtrate to a high-pressure reaction kettle with Freon lining, a...

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Abstract

A process for preparing the cuprous chloride crystal by static-pressure hydrothermal hydrolysis includes such steps as dissolving copper sulfate and sodium chloride in solvent, regulating its acidity, adding excessive red copper powder, boiling while reflux reaction, adding hydrochloric acid to dissolve generated cuprous chloride crystals, filtering to remove residual copper powder, adding water heating to 105-150 deg.c in sealed state, static-pressure hydrothermal hydrolyzing, filtering, washing and drying.

Description

technical field [0001] The invention relates to a static pressure hydrothermal hydrolysis method for preparing cuprous chloride crystals, which belongs to the technical field of environmental protection 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 Coagulants in organic synthesis, catalysts in organic synthesis, reducing agents in the dye industry and used in batteries, 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 wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/05
Inventor 王宝罗方卫民
Owner ZHEJIANG UNIV
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