Treatment method of mixed solution containing ethanol, piperazine, n-hexanol and water

A processing method, a technology of n-hexanol, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as inability to separate, inability to be separated by ordinary rectification, etc.

Active Publication Date: 2021-09-10
索闻特环保科技(上海)有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0002] Piperazine in the ethanol-piperazine-n-hexanol-water waste liquid produced in the pharmaceutical industry is easily soluble in water

Method used

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  • Treatment method of mixed solution containing ethanol, piperazine, n-hexanol and water

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Embodiment Construction

[0014] 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.

[0015] 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.

[0016] The content in this embodiment is the content in weight percentage unless otherwise specified.

[0017] The present invention mainly comprises the following steps to the processing method of the mixed solution containing ethanol, piperazine, n-hexanol and water:

[0018] The mixed solution is carried out rectification and separation in the first rectification tower, the first material containing ethanol and water is obtained at the top of the tower, ...

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Abstract

The invention relates to a treatment method of a mixed solution containing ethanol, piperazine, n-hexanol and water, which comprises the following steps: rectifying and separating the mixed solution in a first rectifying tower to obtain a first material containing ethanol and water at the tower top and a second material containing piperazine and n-hexanol at the tower bottom, extracting the second material, and carrying out vacuum rectification in a second rectifying tower to obtain a piperazine product at the tower top and an n-hexanol product at the tower kettle. According to the treatment process disclosed by the invention, ethanol, piperazine, n-hexanol and water can be respectively extracted and recovered from a mixed solution of ethanol, piperazine, n-hexanol and water, and the obtained product is high in purity and can be used for treating wastewater containing the substances in the pharmaceutical industry.

Description

technical field [0001] The invention relates to a treatment method for a mixed liquid containing ethanol, piperazine, n-hexanol and water. Background technique [0002] Piperazine in the ethanol-piperazine-n-hexanol-water waste liquid produced in the pharmaceutical industry is easily soluble in water, and water-ethanol and water-n-hexanol azeotrope cannot be separated by ordinary rectification. Therefore, it cannot be separated by ordinary distillation. Contents of the invention [0003] The main purpose of the present invention is to provide a kind of processing method that can contain the mixed solution of ethanol, piperazine, n-hexanol and water. [0004] In order to achieve the above object, the invention provides a kind of processing method containing the mixed liquor of ethanol, piperazine, n-hexanol and water, comprises the following steps: [0005] The mixed solution is carried out rectification and separation in the first rectification tower, the first material ...

Claims

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Application Information

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IPC IPC(8): C07D295/023C07D295/027C07C29/80C07C31/08C07C31/125
CPCC07D295/023C07D295/027C07C29/80C07C31/08C07C31/125
Inventor 许兆华王帅陈建伟杨永年
Owner 索闻特环保科技(上海)有限公司
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