A kind of 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 problems such as low production capacity and inability to effectively dissipate heat from lights, so as to reduce raw material residues and improve photoreaction efficiency , Increase the effect of stirring and mixing area

Active Publication Date: 2021-04-30
山东德晨能源科技有限公司
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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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  • A kind of cyclobutane tetracarboxylic dianhydride preparation device
  • A kind of cyclobutane tetracarboxylic dianhydride preparation device
  • A kind of 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, in particular to a cyclobutane tetracarboxylic dianhydride preparation device, aiming at the problems of many by-products, poor production quality and serious pollution in the cyclobutane tetracarboxylic dianhydride preparation device , the following scheme is now proposed, including a mixing tank, a nitrogen tank and an ultrasonic incubator. The top outer wall of the mixing tank is screwed with a drive box, and one side of the top inner wall of the drive box is provided with a servo motor, and the other side of the top inner wall of the drive box is The side is fixed with a stirring rod through a bearing, and the outer walls of both sides of the stirring rod are provided with spring bars, and the outer walls of the bottom of the spring bars are bonded with buoyancy blocks. The invention can achieve the effect of liquid seal, effectively avoid the phenomenon that the maleic anhydride raw material with strong irritating smell and toxicity will pollute the environment and damage human health, enhance the astigmatism effect of the high-pressure mercury lamp, and improve the The light reaction efficiency of the formic dianhydride preparation, and the water source circulates to achieve the effect of water cooling.

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 Patents(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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