Neutralization system for preparing p-chlorophenylglycine

By designing a neutralization system including a liquid tube, a circulation pump and an acid neutralization condenser, the problems of low neutralization reaction efficiency and waste of steam resources in the prior art are solved, and efficient neutralization reactions and effective utilization of resources are achieved.

CN222658669UActive Publication Date: 2025-03-25LANZHOU ZHAOFENG CHEMICAL TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202421312642.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-11
Publication Date
2025-03-25
Estimated Expiration
2034-06-11

AI Technical Summary

Technical Problem

The existing acid-base neutralization systems are inefficient in large-scale neutralization reactions, and the steam generated by the neutralization reaction is difficult to effectively utilize, resulting in waste of resources and environmental pollution.

Method used

A neutralization system including a neutralizing kettle, a liquid distribution tube, a circulation pump and an acid neutralizing condenser was designed. The liquid alkali was added dropwise through the liquid distribution tube and rotated at a high speed in combination with the stirring blade. The solution was circulated up and down by using the circulation pump and the circulation tube to improve the neutralization reaction efficiency; at the same time, steam was introduced into the acid neutralizing condenser for condensation, and refluxed to the neutralizing kettle to avoid direct discharge.

Benefits of technology

It significantly improves the efficiency of neutralization reaction, avoids direct steam emissions, and reduces resource waste and environmental pollution.

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Abstract

The utility model discloses a neutralization system for preparing p-chlorophenylglycine, which comprises a neutralization kettle, the top of the neutralization kettle is connected with the bottom of a metering tank through an alkali liquor inlet pipe, the output end of the alkali liquor inlet pipe is connected with a liquid distribution pipe with an annular structure, and the liquid distribution pipe is fixedly mounted at the top of an inner cavity of the neutralization kettle; the bottom of the neutralization kettle is connected with a circulating pipe; the top end of the circulating pipe is communicated with the top of the inner cavity of the neutralization kettle; the circulating pipe is connected with an output pipe, and an electric three-way valve is arranged at the joint of the output pipe and the circulating pipe; the top of the neutralization kettle is connected with the acid neutralization condenser through an air outlet pipe and a return pipe, the return pipe is of a U-shaped structure, and the top of the acid neutralization condenser is connected with a blow-down pipe. According to the neutralization system for preparing the p-chlorophenylglycine, provided by the utility model, the neutralization reaction efficiency can be obviously improved, and the waste of resources and the pollution of the environment caused by direct discharge of steam generated by the neutralization reaction into the air can be avoided.
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