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Cyclobutane tetracarboxylic dianhydride preparation device

A cyclobutane tetracarboxylic dianhydride and preparation device technology, which is applied in the field of cyclobutane tetracarboxylic dianhydride preparation devices, can solve the problems of ineffective heat dissipation of light and low production capacity, so as to improve photoreaction efficiency and reduce raw material residues , Improve the effect of uniformity and mixing effect

Active Publication Date: 2019-01-01
山东德晨能源科技有限公司
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AI Technical Summary

Problems solved by technology

The inventors found that the photoreaction device for continuous synthesis of cyclobutanetetracarboxylic dianhydride in the above-mentioned patent has the following disadvantages: the light cannot effectively dissipate heat, and it can only be irradiated by a low-pressure mercury lamp, and the production capacity is low

Method used

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  • Cyclobutane tetracarboxylic dianhydride preparation device

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0025] refer to Figure 1-4 , a cyclobutanetetracarboxylic dianhydride preparation device, comprising a mixing tank 1, a nitrogen tank 4 and an ultrasonic thermostat 12, the top outer wall of the mixing tank 1 is screwed with a drive box 17, and one side of the top inner wall of the drive box 17 passes through The screw is fixed with a servo motor 18, and the other side of the top inner wall of the driving box 17 is fixed with a stirring rod 19 through a bearing. The outer walls of both sides of the stirring rod 19 are welded with a spring bar 22, and the bottom outer wall of the spring bar 22 is bonded with a buoyancy block 23 One side of the top outer wall of the m...

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Abstract

The invention belongs to the technical field of cyclobutane tetracarboxylic dianhydride preparation, and particularly relates to a cyclobutane tetracarboxylic dianhydride preparation device. In orderto solve the problems that the cyclobutane tetracarboxylic dianhydride preparation device is more in by-products, is poor in production quality and is great in pollution, the invention discloses the following scheme: the cyclobutane tetracarboxylic dianhydride preparation device comprises a mixing tank, a nitrogen gas tank and an ultrasonic constant-temperature tank, wherein the top outer wall ofthe mixing tank is fixedly rpovided with a drive box through a bolt; one side of the top inner wall of the drive box is provided with a servo motor; the other side of the top inner wall of the drive box is fixedly provided with a stirring rod through a bearing; the outer walls of the two sides of the stirring rod are provided with spring strips; and the bottom outer walls of the spring strips areadhered to floating blocks. The cyclobutane tetracarboxylic dianhydride preparation device can achieve the liquid-seal effect, effectively prevents strong pungent odour and a raw material containing toxic maleic anhydride from polluting the environment and harming body health, strengthens light diffusing effect of a high-voltage mercury lamp, improves photo-reaction efficiency of cyclobutane tetracarboxylic dianhydride preparation, flows a water source in a circulating mode, and achieves the water-cooling effect at the same time.

Description

technical field [0001] The invention relates to the technical field of cyclobutane tetracarboxylic dianhydride preparation, in particular to a cyclobutane tetracarboxylic dianhydride preparation device. Background technique [0002] In the existing synthesis technology, cyclobutanetetracarboxylic dianhydride is usually prepared by using maleic anhydride as raw material, carbon tetrachloride or ethyl acetate as solvent, and synthesis under ultraviolet light irradiation. Maleic anhydride has a strong pungent smell and acute toxicity, and it is easy to pollute the working environment when used, and the preparation of cyclobutanetetracarboxylic dianhydride is generally carried out in a batch-type reactor, and a light source is inserted in the reactor. The light irradiation reaction is carried out, and the preparation of cyclobutane tetracarboxylic dianhydride needs to be carried out at low temperature. When the light source is working, it is easy to cause a large amount of by-pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D493/04B01F7/00B01F15/06B01J19/12B01J19/00
CPCB01J19/0013B01J19/12C07D493/04B01F27/118B01F35/90B01F2035/98Y02P20/141
Inventor 许博
Owner 山东德晨能源科技有限公司
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