Novel reaction kettle for producing methylamino avermectin benzoate

A technology of methylamino abamectin and benzoate, applied in the field of reactors, can solve problems such as shortening reaction time, and achieve the effect of improving heat exchange effect

Inactive Publication Date: 2012-08-22
DAQING JEFENE BIO CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no one in the current existing equipment: a reaction kettle that can not only increase the reaction speed, but also shorten the reaction time, enable the materials to be fully mixed instantaneously, have good material circulation, large heat exchange area, and high heat exchange efficiency.

Method used

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  • Novel reaction kettle for producing methylamino avermectin benzoate
  • Novel reaction kettle for producing methylamino avermectin benzoate
  • Novel reaction kettle for producing methylamino avermectin benzoate

Examples

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Effect test

Embodiment 1

[0044] A reaction kettle for the production of emamectin benzoate, that is, a reactor for C-5 protection reaction, C-4 oxidation reaction, and C-4 reduction reaction. The agitator is divided into three layers, and the bottom is stirred The device is a three-blade propulsion type agitator, and the first and second layers above (that is, the upper layer agitator and the middle layer agitator) are both two-blade oblique paddle type agitators; It is connected and equipped with a vertical circulation pump to improve the effect of vertical circulation so as to fully mix the materials.

[0045] For the new reactor described above, the outer wall of the kettle is provided with a jacket 7, the bottom of the jacket of the outer wall of the kettle is provided with a refrigerant inlet 12, and the upper part of the jacket is provided with a refrigerant outlet 5; the bottom of the kettle is provided with a lower general ring pipe 19 , the cooling finned tube refrigerant inlet 10 and the coo...

Embodiment 2

[0056] Application of new reactor for C-4 reduction reaction: agitator drive motor power 5.5KW; cooling finned tubes 16 groups, finned tube base tube outer diameter 38mm, thickness 3.5mm, fin outer diameter 60mm, fin pitch 6mm, fin thickness 1mm, each group length 120mm, outer diameter of the upper and lower total ring pipes 76mm, source: self-made;

[0057] The upper stirrer and the middle stirrer are two-blade oblique paddle stirrers, with a stirring diameter of 800mm, a blade width of 65mm, a key width of 18mm, and fixing bolts M20; source: Zhejiang Great Wall Reducer Co., Ltd.;

[0058] The bottom agitator is a three-blade propulsion agitator with a stirring diameter of 650mm, a key width of 18mm, and a fixing bolt of M20. Source: Zhejiang Great Wall Reducer Co., Ltd.;

[0059] Reactor effective volume 2m 3 ;

[0060] The above accessories are made of stainless steel 304;

[0061] The longitudinal circulation pump is: an explosion-proof magnetic pump with a suction inle...

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Abstract

The invention discloses a reaction kettle which comprises a vertical cylindrical kettle body, wherein the kettle body is provided with a kettle cover, a viewing mirror, a liquid longitudinal circulation system, a material port, a temperature probe and the like; a cooling jacket is arranged on the outer wall of the kettle body; a stirring device is arranged in the kettle body and penetrates through the kettle top to be connected with a power device; an air-pressure sealing device is arranged outside the rotatable connection part between the stirring device and the kettle top; the stirring is divided into three layers, wherein the three-vane propulsive stirring is performed at the bottom layer, and two-vane inclined-paddle type stirrers are arranged on the two layers above; annular pipes are arranged in the kettle body and connected by fin pipes; the kettle body, the kettle cover, the annular pipes and the fins are all made from 304 steel; and the outer layer is provided with the cooling jacket made from carbon steel. Compared with the existing reaction kettle, the reaction kettle disclosed by the invention has novel design, can mix the materials more sufficiently, improves the heat exchange efficiency, reduces the manufacturing cost, and particularly obviously improves the product conversion efficiency and reaction effect in the production of emamectin benzoate and improves the product quality.

Description

technical field [0001] The invention relates to a reaction kettle, which belongs to a special reaction kettle for the production of emamectin benzoate. Background technique [0002] Emamectin benzoate (hereinafter referred to as emamectin benzoate) is a new type of high-efficiency semi-synthetic antibiotic insecticide synthesized from the fermentation product avermectin B1. It has super high efficiency and low toxicity (the preparation is close to Non-toxic), no residue, no pollution and other characteristics of biological pesticides, compared with abamectin, it has expanded the insecticidal spectrum and reduced the toxicity to humans and animals. [0003] At present, the synthesis process of emamectin benzoate is mainly divided into five steps, which are C-5 protection reaction, C-4 oxidation reaction, C-4 imidization reaction, C-4 reduction reaction, and C-5 deprotection reaction. [0004] The novel reactor is mainly used for the C-5 protection reaction, C-4 oxidation rea...

Claims

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Application Information

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IPC IPC(8): B01J19/18C07H17/08C07H1/00C07C63/08C07C51/41
Inventor 王振东张伍林
Owner DAQING JEFENE BIO CHEM
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