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Treatment method of mixed solution containing isopropanol, acetonitrile, triethylamine and water

A treatment method, isopropanol technology, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as inseparability, and achieve the effect of easy handling and recycling

Active Publication Date: 2021-10-01
索闻特环保科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] There are 8 azeotropes in the isopropanol-acetonitrile-triethylamine-water mixture produced in the biopharmaceutical industry, and isopropanol, acetonitrile and water are miscible. Triethylamine and water have different solubility at different temperatures, which cannot be separated by ordinary distillation

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  • Treatment method of mixed solution containing isopropanol, acetonitrile, triethylamine and water

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Embodiment Construction

[0020] The rectification tower in this embodiment includes not only the tower body, but also relevant supporting equipment and instrumentation systems such as pumps, pipelines, valves, control systems, etc. configured for the rectification tower body in order to achieve rectification.

[0021] The transportation of each material in this embodiment can be controlled by pipelines, pumps, valves, and control systems, and the temperature of the materials can be adjusted by various heaters, heat exchangers and other equipment.

[0022] The content in this embodiment is the content in weight percentage unless otherwise specified.

[0023] The present invention mainly comprises the following steps to the processing method of the mixed solution containing Virahol, acetonitrile, triethylamine and water:

[0024] The mixed solution and ethylene glycol are extracted and rectified in the first rectification tower, and the first material containing triethylamine and acetonitrile is obtaine...

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Abstract

The invention relates to a treatment method of a mixed solution containing isopropanol, acetonitrile, triethylamine and water, which comprises the following steps: carrying out extractive distillation on the mixed solution and ethylene glycol in a first rectifying tower to obtain a first material containing triethylamine and acetonitrile at the tower top and a second material containing ethylene glycol, isopropanol and water at a tower bottom; seperating an acetonitrile product and a triethylamine product from the first material, rectifying the second material in a second rectifying tower, obtaining a third material containing isopropanol and water at a tower top, and seperating an isopropanol product from the third material. The treatment method provided by the invention can effectively treat the mixed solution containing isopropanol, acetonitrile, triethylamine and water generated in the biopharmaceutical industry, solves the problem that components are difficult to separate due to azeotropy among the components, and the components formed after treatment can directly form a product or form the mixed solution which can be easily separated by the prior art, and therefore, the mixed solution is easy to treat and recycle.

Description

technical field [0001] The invention relates to a treatment method for a mixed liquid containing isopropanol, acetonitrile, triethylamine and water. Background technique [0002] There are 8 azeotropes in the isopropanol-acetonitrile-triethylamine-water mixture produced in the biopharmaceutical industry, and isopropanol, acetonitrile and water are miscible, and triethylamine and water will dissolve differently at different temperatures properties, which cannot be separated by ordinary rectification. Contents of the invention [0003] Main object of the present invention is to provide a kind of processing method containing the mixed liquor of Virahol, acetonitrile, triethylamine and water, and this processing method comprises the following steps: [0004] The mixed solution and ethylene glycol are extracted and rectified in the first rectification tower, and the first material containing triethylamine and acetonitrile is obtained at the top of the tower, and the first mate...

Claims

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Application Information

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IPC IPC(8): C07C255/03C07C253/34C07C211/05C07C209/86C07C31/10C07C29/80
CPCC07C209/86C07C253/34C07C29/80C07C211/05C07C255/03C07C31/10
Inventor 杨永年杭亚平王帅邵峰
Owner 索闻特环保科技(上海)有限公司
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