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Melt crystallizer

A melting crystallizer and crystallization tube technology, applied in the direction of solution crystallization, etc., can solve the problems of low purification efficiency and complex structure, and achieve the effects of high product purity, easy control of reaction, and simple structure

Inactive Publication Date: 2021-03-30
北京普利玛科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the melting crystallization device in the prior art has a complex structure and low purification efficiency

Method used

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with accompanying drawing.

[0036] figure 1 A melting crystallizer 100 according to the invention is shown. Such as figure 1 As shown, the melting crystallizer 100 includes a shell 1, and an upper cover 2 is set at the top of the shell 1, and a lower cover 3 is set at the bottom of the shell 1, and the shell 1 forms a closed space by the upper cover 2 and the lower cover 3 4. An upper casing 5 is detachably arranged on the top of the casing 1 , and a dispensing chamber 6 is formed between the upper casing 5 and the upper cover 2 . A lower casing 7 is detachably arranged at the bottom of the casing 1 , and a discharge chamber 8 is formed between the lower casing 7 and the lower cover 3 . The upper cover 2 is provided with a mounting hole 21 (in figure 2 shown in ). A crystallization tube 9 communicating with the installation hole 21 is provided at the installation hole 21 . The crystallizatio...

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PUM

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Abstract

The invention relates to a melt crystallizer, which comprises a shell, a crystallization pipe and a distribution piece arranged at the inlet of the crystallization pipe, wherein an upper sealing coveris arranged at the top end of the shell, a lower sealing cover is arranged at the bottom end of the shell, the shell forms a closed space through the upper sealing cover and the lower sealing cover,a mounting hole is formed in the upper sealing cover, the crystallization pipe is arranged at the mounting hole, communicates with the mounting hole, and vertically extends to penetrate through the lower sealing cover, the distribution piece comprises a conical body capable of being inserted into the crystallization pipe, the diameter of the conical body is gradually increased in the direction from top to bottom, and a gap is formed between the conical body and the crystallization pipe. The melt crystallizer is easy to control in reaction and high in purification efficiency.

Description

[0001] Cross References to Related Applications [0002] This application is a divisional application based on the Chinese patent application CN201510150154.3 filed on March 31, 2015, entitled "Melting Crystallizer". The entire content of this application is incorporated herein by reference. technical field [0003] The present invention relates to a melting crystallizer. Background technique [0004] With the development of the chemical industry, the requirements for the purity of polymer monomers and raw materials are getting higher and higher. These monomers usually exist in the form of isomer mixtures, so these mixtures must be refined and purified so that their chemical purity and optical purity can meet the requirements of polymer monomers. [0005] However, isomers and heat-sensitive substances, such as lactide, are prone to coking and hydrolysis at high temperatures. If rectification technology is used, the operating conditions are harsh, and the requirements for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D9/02
Inventor 史佳林姚蔚明
Owner 北京普利玛科技有限责任公司