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Treatment method of waste acid in amantadine production

A treatment method, the technology of amantadine, applied in the field of waste acid produced by amantadine, can solve problems such as unsolvable environmental protection problems, waste of sulfuric acid resources, etc., achieve high resource utilization value, reduce treatment costs, and solve treatment difficulties Effect

Inactive Publication Date: 2020-10-30
SHANDONG HOLLY PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large amount of waste acid is produced in the production process of this method, and the main component in the waste acid is sulfuric acid. There is no suitable method for treating the waste acid, and the environmental protection problem cannot be solved, and it will cause waste of sulfuric acid resources.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Get the waste acid 1830g that produces in the production process of amantadine, wherein the concentration of sulfuric acid is 40%, under the condition of 20 ℃~25 ℃ at reaction temperature, slowly add solid magnesia 300g, after solid magnesia dissolves completely and reacts, The pH value at the end of the reaction is 6.3. After the material is filtered to remove impurities, it is cooled to a temperature of 8° C., and a solid magnesium sulfate heptahydrate is precipitated. The solid magnesium sulfate heptahydrate crystal is separated by a centrifuge to obtain 1610 g of the product, with a yield of 87.5%. The mother liquor Cycle through.

Embodiment 2

[0032] Get the waste acid 1830g that produces in the production process of amantadine, wherein the concentration of sulfuric acid is 42%, under the condition of 20 ℃~25 ℃ at reaction temperature, slowly add solid magnesia 315g, after solid magnesia dissolves completely and reacts, The pH value at the end of the reaction was 6.0. After the material was filtered to remove impurities, it was cooled to a temperature of 9° C., and the solid magnesium sulfate heptahydrate was separated out. The solid magnesium sulfate heptahydrate crystallization was separated with a centrifuge to obtain 1742.8 g of the product, with a yield of 90.2%. The mother liquor is recycled.

Embodiment 3

[0034] Get the waste acid 1830g that produces in the production process of amantadine, wherein the concentration of sulfuric acid is 40%, under the condition of 20 ℃~25 ℃ at reaction temperature, slowly add solid magnesia 360g, after solid magnesia dissolves completely and reacts, The pH value at the end of the reaction is 6.5. After the material is filtered to remove impurities, it is cooled to a temperature of 5°C to 10°C, and a solid magnesium sulfate heptahydrate is precipitated. The solid magnesium sulfate heptahydrate crystals are separated by a centrifuge to obtain 1720g of the product, with a yield of 93.4 %, the mother liquor is recycled.

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PUM

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Abstract

The invention belongs to the technical field of waste liquid treatment and resource utilization, and provides a treatment method for waste acid produced by amantadine production. The method comprisesthe following steps: mixing amantadine production waste acid with magnesium oxide for reaction to obtain magnesium sulfate heptahydrate, wherein the amantadine production waste acid is specifically waste sulfuric acid. According to the method provided by the invention, amantadine is used for producing waste acid to prepare magnesium sulfate heptahydrate, so that the waste acid is converted into valuable resources, the waste acid treatment cost is reduced, and the purpose of resource utilization is achieved. The treatment method disclosed by the invention is energy-saving, safe and reliable, solves the problem of difficulty in treatment of waste acid produced by amantadine production, maximizes the intrinsic value, has higher economic benefit and social benefit, can recycle the mother liquor, and is green and environment-friendly in treatment process.

Description

technical field [0001] The invention relates to the technical field of waste liquid treatment and resource utilization, in particular to a treatment method for producing waste acid from amantadine. Background technique [0002] Amantadine hydrochloride is a symmetrical tricyclic amine, which can inhibit the virus from penetrating into the host cell, affect the uncoating of the virus, inhibit its reproduction, and play a role in the treatment and prevention of viral infection. In recent years, many scientific research institutes and enterprises are actively developing amantadine hydrochloride veterinary preparations, and the veterinary drug market is showing a momentum of rapid growth. And with the study of amantadine hydrochloride, researchers found that it also has certain curative effect in the treatment of cocaine addiction, salivation caused by clozapine and chronic hepatitis C. In future research, amantadine hydrochloride The clinical value and market value of amine wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F5/40C02F9/04C02F1/66C02F1/52C02F103/36C02F101/10
CPCC01F5/40C02F1/001C02F1/5236C02F1/66C02F9/00C02F2001/5218C02F2101/101C02F2103/36
Inventor 李兰花裘月南徐冬红刘志远吴华强周珠凤陈利鸿蔺珍
Owner SHANDONG HOLLY PHARM CO LTD
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