Water heating reduction method preparing process for cuprous chloride

A cuprous chloride and preparation process technology, applied in the direction of cupric chloride, copper halide, etc., can solve the problems of difficult control, complicated process, polluted environment, etc., and achieve the effect of easy control and simple preparation process

Inactive Publication Date: 2007-11-14
YANCHENG TEACHERS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The waste copper chlorine method is mainly due to large investment in equipment, complex process, and difficult control; other methods are based on Na[CuCl 2 ] A large amount of water is used during hydrolysis, and the energy consumption of waste water recovery is high, but general manufacturers do not recycle, which not only wastes raw materials but also pollutes the environment; although the process of using sodium sulfite or sulfur dioxide reduction method is relatively simple, the cost is high, and a large amount of acid is produced Fog pollutes the environment, and the particle size of the prepared cuprous chloride is small and difficult 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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  • Water heating reduction method preparing process for cuprous chloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 250 grams of copper sulfate (CuSO 4 ·5H 2 (2, all the same in the following examples) and the mixed aqueous solution that 58.5 grams of sodium chloride are made into are as feed liquid, transfer in the pressure-resistant and corrosion-resistant reactor, then add reducing agent formaldehyde 30 grams (converted into 100% formaldehyde, implement below All the same in the example), airtight heating to 170 ℃, hydrothermal reduction reaction for 3 hours, generate cuprous chloride crystals, filter after cooling, wash and dry the cuprous chloride crystals filtered out according to conventional methods, and obtain the target product 80 grams of cuprous chloride crystals. The product is tested by XRD method and conforms to the standard spectrum of cuprous chloride crystal. The mother liquor after filtering out the cuprous chloride crystal is cooled after concentrating, sodium sulfate crystals are separated out, and the sodium sulfate crystal is removed by filtration, and the mo...

Embodiment 2

[0018] Transfer the mixed aqueous solution made of 250 grams of copper sulfate and 58.5 grams of sodium chloride into a pressure-resistant and corrosion-resistant reaction kettle, then add 45 grams of formaldehyde as a reducing agent, heat it to 160°C in a closed manner, and conduct a hydrothermal reduction reaction for 5 hours , generate cuprous chloride crystals, filter after cooling, wash and dry the cuprous chloride crystals that are filtered out according to conventional methods, and obtain 85 grams of target product cuprous chloride crystals. The product is tested by XRD method and conforms to the standard spectrum of cuprous chloride crystal.

Embodiment 3

[0020] A mixed aqueous solution made of 250 grams of copper sulfate and 58.5 grams of sodium chloride was used as a feed liquid, and transferred into a pressure-resistant and corrosion-resistant reaction kettle, and then 45 grams of formaldehyde was added as a reducing agent, sealed and heated to 150 ° C, and the hydrothermal reduction reaction was 8 Hour, generate cuprous chloride crystal, filter after cooling, the cuprous chloride crystal that will filter out is washed, dry process according to conventional method, obtain target product cuprous chloride crystal 82 grams. The product is tested by XRD method and conforms to the standard spectrum of cuprous chloride crystal.

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Abstract

The invention is a kind of preparation craft of copper chloride crystal by hydrothermal reduction method, confect bluestone and sodium chloride into mixed water solution, transmit them into pressure and resistant autoclave, add reducer of formaldehyde which then is heated to temperature of 130 degree C-170 degree C closely, make them react for 3-12 hours by hydrothermal reduction method and form copper chloride crystal, cool it and then filter, absterge and dry the filtered crystal according to general method, then get product wanted. In the course of preparing copper chloride crystal in the invention, it uses formaldehyde as reducer, liquor and formaldehyde reducer reacts in the close autoclave directly by hydrothermal reduction method, form product wanted of copper chloride crystal for one step. The preparation craft is simple and easy to control, save water and energy, there is no harmful gas and liquid to discharge, the mother liquor filtered copper chloride crystal can be used circulatoryly after being disposalled, and it has double superiority of environmental protection and energy-conservation.

Description

technical field [0001] The invention relates to a preparation process of cuprous chloride, in particular to a preparation process of cuprous chloride crystals by a hydrothermal reduction method, and 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 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 a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/05
Inventor 王宝罗彭秉成陶为华
Owner YANCHENG TEACHERS UNIV
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