Suction filtration purification device of benzalkonium chloride

A technology of benzalkonium chloride and liquid suction pump, which is applied in the direction of filtration and separation, gravity filter, fixed filter element filter, etc. It can solve the problems of insufficient purification, not suitable for large batches of enterprises, and liquids that cannot be removed in time. Achieve the effect of simple structure and saving cleaning agent

Active Publication Date: 2017-06-27
广东洛斯特制药有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The suction filtration device mentioned in the invention "Suction Filtration Device" (Application Publication No. CN 10277936) is only suitable for laboratory experiments, not suitable for large-scale enterprises. At the same time, th...

Method used

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  • Suction filtration purification device of benzalkonium chloride
  • Suction filtration purification device of benzalkonium chloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, the benzalkonium chloride suction filtration purification device of the present invention is mainly composed of a cylindrical purification kettle 1 and an air pump 2, wherein a hemispherical filter with evenly distributed small round holes is fixedly installed inside the purification kettle 1. A grid frame 11, and the upper surface of the filter grid frame 11 is covered with a microporous filter membrane 3. On the side wall of the purification kettle 1, there is a ventilation hole relative to the below of the filter screen frame 11, and the ventilation hole is connected with the air inlet of the air pump 2, and the bottom of the purification kettle 1 is provided with a liquid outlet 12 that can be closed. The top cover of the purification kettle 1 is provided with an interconnected liquid inlet 13 and a spray head 14. When suction filtration and purification are required, the crystals are placed on the microporous filter membrane 3, the liquid...

Embodiment 2

[0027] Such as figure 2 As shown, on the basis of Embodiment 1, the waste liquid circulation device 5 in this embodiment also includes a two-position three-way solenoid valve B53, a cylindrical cooling crystallization chamber 54 and a liquid suction pump B55. The liquid outlet of described suction pump A52 links to each other with the inlet that is arranged on cooling crystallization chamber 54 tops, and the outlet that is arranged on cooling crystallization chamber 54 bottoms links to each other with the liquid inlet of suction pump B55, and the liquid outlet of suction pump B55 It is connected with the U port of the two-position three-way electromagnetic valve B53, and a refrigeration device is installed inside the cooling crystallization chamber 54, and a microporous filter screen 541 is installed in the middle part. The purpose of installing a refrigeration device is to reduce the temperature of the cleaning agent, thereby reducing the solubility of impurities in it, so t...

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Abstract

The invention discloses a suction filtration purification device of benzalkonium chloride. The suction filtration purification device mainly comprises a cylindrical purification kettle inside which a hemispherical filtering network frame is fixedly mounted, a microporous filter membrane, a filter drier and a gas sucking pump, wherein the gas sucking pump is connected with a vent hole of the purification kettle; a port A of a two-position three-way electromagnetic valve A51 is connected with a liquid outlet of the purification kettle; a liquid outlet of a liquid sucking pump A is connected with an inlet of a cooling crystallization chamber; a liquid inlet of the liquid sucking pump A is connected with a port B; an outlet in the bottom of the cooling crystallization chamber is connected with a liquid inlet of a liquid sucking pump B; and a liquid outlet of the liquid sucking pump B is connected with a port U of the two-position three-way electromagnetic valve B. The suction filtration purification device has the beneficial effects as follows: the suction filtration purification device is simple in structure; a cleaning solution can be recycled while purification is ensured; and moreover, in the recycling process, impurities dissolved in the cleaning solution can be filtered out.

Description

technical field [0001] The invention relates to a benzalkonium chloride suction filtration purification device. Background technique [0002] Suction filtration, also known as decompression filtration and vacuum filtration, refers to the use of an aspirator to reduce the pressure in the filtration bottle to achieve the purpose of solid-liquid separation. [0003] In the process of preparing benzalkonium chloride, dodecyl (tetradecyl or hexadecyl) alkyl dimethyl tertiary amine and benzyl chloride in a ratio of 1:1 (mol) are incubated under the condition of ethyl acetate for 8 -10 hours, after the reaction is complete, in order to obtain relatively pure benzalkonium chloride, the solution that has finished the reaction is usually cooled to precipitate crystals, but in the precipitated crystals, often also contain twelve (fourteen or sixteen ) Alkyl dimethyl tertiary amine crystals and benzyl chloride crystals. At the same time, these three crystals are not easily soluble in w...

Claims

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Application Information

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IPC IPC(8): B01D29/085B01D29/78C07C209/84C07C211/63
CPCB01D29/085B01D29/78C07C209/84C07C211/63
Inventor 吴琏
Owner 广东洛斯特制药有限公司
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