Continuous flow synthesis system of cis-4-hydroxycyclohexane carboxylic acid

Abstract

The utility model discloses a continuous flow synthesis system of cis-4-hydroxycyclohexane carboxylic acid, and belongs to the technical field of chemical synthesis. The continuous flow synthesis system comprises a feeding system, a mixing assembly, a reaction unit, a separator, a collector, a drying unit and a waste liquid treatment unit, the reaction unit comprises at least two continuous flow reactors, each continuous flow reactor is provided with an independent temperature control assembly, outlets of the continuous flow reactors are connected with a separator, the separator is connected with a collector and a waste liquid treatment unit, an outlet of the collector is connected with a drying unit, and an outlet of the drying unit is connected with the waste liquid treatment unit. By adopting the design of the micro-channel mixer, reactants can be fully mixed before entering the reactor, so that the reaction speed is accelerated, and the yield of products is improved; the independent temperature control assembly can accurately control the reaction temperature, side reactions are reduced, the purity of products is improved, pollution to the environment is reduced through the gas scrubber and the waste liquid treatment unit, and the device is more environmentally friendly.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of chemical synthesis, specifically relates to a continuous flow synthesis system of cis-4-hydroxycyclohexane carboxylic acid. BACKGROUND

[0002] In the field of chemical synthesis, cis-4-hydroxycyclohexane carboxylic acid is an important organic intermediate, and its application range is wide, including medicine, pesticide and fine chemical product. The traditional synthesis method adopts the intermittent reaction, and this mode has many limitations in the operation process, such as low reaction efficiency, difficult control of product purity, long production cycle, large energy consumption and prominent environmental pollution problem. In addition, the intermittent reactor is often difficult to accurately control the reaction condition when processing high reactivity material, is easy to cause the occurrence of side reaction, and influences the quality and yield of final product.

[0003] With the continuous improvement of the production efficiency and environmental protection requirement of chemical industry, the continuous flow synthesis technology is widely concerned because of its advantages in safety, controllability, efficiency and environmental protection. The continuous flow synthesis technology realizes chemical reaction through the continuous flow of reaction medium, can effectively improve the reaction rate and product selectivity, reduces the generation of by-product, and reduces energy consumption and production cost. However, the existing continuous flow synthesis system still has certain limitations in design and operation, and needs further optimization and innovation to meet the needs of industrial production.

[0004] Therefore, developing a new type of cis-4-hydroxycyclohexane carboxylic acid continuous flow synthesis system can not only improve the synthesis efficiency and product quality, but also effectively reduce the production cost and environmental pollution, has important industrial application value and market prospect. The utility model is born in such a background, aims at realizing the efficient and environmental protection synthesis of cis-4-hydroxycyclohexane carboxylic acid through the innovative system design. SUMMARY

[0005] In order to solve the above-mentioned problems, the utility model discloses a continuous flow synthesis system of cis-4-hydroxycyclohexane carboxylic acid, adopts the design of microchannel mixer to make the reactants fully mix before entering the reactor, thereby speeding up the reaction rate, and improving the yield of product. Each continuous flow reactor is provided with an independent temperature control assembly, can accurately control the reaction temperature, ensures that the reaction is carried out under the optimum condition, and this accurate control helps to reduce the occurrence of side reaction, improves the purity of product, reduces the pollution to the environment through the gas scrubber and waste liquid treatment unit, and is more environmental protection.

[0006] In order to achieve the above-mentioned purpose, the specific technical scheme of the application is as follows:

[0007] A continuous flow synthesis system of cis-4-hydroxycyclohexanecarboxylic acid comprises a feeding system, a mixing assembly, a reaction unit, a separator, a collector, a drying unit and a waste liquid treatment unit; the reaction unit comprises at least two continuous flow reactors, each of which is provided with an independent temperature control assembly, the outlet of the continuous flow reactor is connected with the separator, the outlet of the separator is connected with the collector and the waste liquid treatment unit, the outlet of the collector is connected with the drying unit, and the outlet of the drying unit is connected with the waste liquid treatment unit.

[0008] Based on the above technical features, further, a back pressure valve is arranged between the continuous flow reactor and the separator, which is adjustable for maintaining the pressure in the system.

[0009] Based on the above technical features, preferably, the feeding system comprises at least two independent feeding pumps for respectively conveying different reactants.

[0010] Based on the above technical features, preferably, the mixing assembly comprises at least two micro-channel mixers connected in series, and the channel of each micro-channel mixer is designed in a spiral shape to increase the mixing efficiency.

[0011] Based on the above technical features, preferably, the drying unit comprises at least one vacuum drying chamber, and an adjustable heating plate is arranged in the vacuum drying chamber to realize uniform heating.

[0012] Based on the above technical features, preferably, the drying unit is further connected with at least one gas scrubber, and the gas scrubber adopts a wet scrubbing technology to effectively scrub and purify the waste gas generated in the drying process.

[0013] Compared with the prior art, the application has the following beneficial effects:

[0014] The design of the micro-channel mixer adopted in the application enables the reactants to be fully mixed before entering the reactor, thereby accelerating the reaction speed and improving the yield of the product; each continuous flow reactor is provided with an independent temperature control assembly, which can accurately control the reaction temperature and ensure that the reaction is carried out under the best conditions, and such accurate control helps to reduce the occurrence of side reactions and improve the purity of the product; the design of the drying unit adopts a vacuum drying technology, which reduces the thermal decomposition of the product in the drying process and ensures the quality and stability of the product; the gas scrubber after the drying unit can more effectively treat the waste gas generated in the drying process, including volatile organic compounds (VOCs) and other harmful gases, and the selection of the wet scrubbing technology can remove the pollutants in the waste gas through a liquid absorbent, thereby reducing the impact on the environment; the design of the waste liquid treatment unit effectively treats the waste liquid generated in the reaction process and reduces the impact on the environment. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 This is a schematic diagram of the continuous flow synthesis system of cis-4-hydroxycyclohexane carboxylic acid according to the present invention.

[0016] List of identifiers in attached diagrams:

[0017] 1. Feeding system; 1-1. Feed pump; 2. Mixing assembly; 2-1. Microchannel mixer; 3. Reaction unit; 3-1. Continuous flow reactor; 3-2. Temperature control assembly; 4. Separator; 5. Collector; 6. Drying unit; 6-1. Vacuum drying chamber; 7. Waste liquid treatment unit; 8. Back pressure valve; 9. Gas scrubber. Detailed Implementation

[0018] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0019] It should be noted that the terms "upper," "lower," "left," "right," "front," and "rear" used in the following description refer to the directions shown in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. Furthermore, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] like Figure 1 As shown, a continuous flow synthesis system for cis-4-hydroxycyclohexane carboxylic acid includes a feed system, a mixing component, a reaction unit, a separator, a collector, a drying unit, and a waste liquid treatment unit. The reaction unit includes at least two continuous flow reactors, each of which is equipped with an independent temperature control component. The outlet of the continuous flow reactor is connected to the separator, the outlet of the separator is connected to the collector and the waste liquid treatment unit, the outlet of the collector is connected to the drying unit, and the outlet of the drying unit is connected to the waste liquid treatment unit.

[0021] Furthermore, a back pressure valve 8 is provided between the continuous flow reactor and the separator. The back pressure valve is designed to be adjustable, and the adjustment mechanism of the back pressure valve is controlled by a stepper motor to achieve precise pressure control.

[0022] Preferably, the feeding system includes at least two independent feed pumps for delivering different reactants respectively.

[0023] Preferably, the mixing assembly comprises at least two micro-channel mixers connected in series, and the channel of each micro-channel mixer is designed in a spiral shape to increase the mixing efficiency.

[0024] Preferably, the drying unit comprises at least one vacuum drying chamber, and adjustable heating plates are arranged in the vacuum drying chamber to achieve uniform heating.

[0025] Preferably, the drying unit is further connected with at least one gas scrubber, and the gas scrubber adopts a wet scrubbing technology to effectively scrub and purify the waste gas generated in the drying process.

[0026] In summary, the present application has a simple structure, and the design of the micro-channel mixer enables the reactants to be fully mixed before entering the reactor, thereby accelerating the reaction speed and improving the yield of the product. Each continuous flow reactor is provided with an independent temperature control assembly, which can accurately control the reaction temperature and ensure that the reaction is carried out under the best conditions. This precise control helps to reduce the occurrence of side reactions, improve the purity of the product, reduce environmental pollution through the gas scrubber and waste liquid treatment unit, and is more environmentally friendly.

[0027] It should be noted that the drawings only illustrate the technical idea of the present application and cannot limit the protection scope of the present application. For ordinary skilled persons in the art, a number of improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements all fall within the protection scope of the claims of the present application.

Claims

1. A continuous flow synthesis system of cis-4-hydroxycyclohexanecarboxylic acid, characterized by: The system comprises a feeding system, a mixing assembly, a reaction unit, a separator, a collector, a drying unit and a waste liquid treatment unit; the reaction unit comprises at least two continuous flow reactors, each of which is provided with an independent temperature control assembly, the outlet of the continuous flow reactor is connected with the separator, the outlet of the separator is connected with the collector and the waste liquid treatment unit, the outlet of the collector is connected with the drying unit, and the outlet of the drying unit is connected with the waste liquid treatment unit.

2. A continuous flow synthesis system of cis-4-hydroxycyclohexanecarboxylic acid according to claim 1, characterized in that: A back pressure valve is arranged between the continuous flow reactor and the separator.

3. A continuous flow synthesis system of cis-4-hydroxycyclohexanecarboxylic acid according to claim 1, characterized in that: The feeding system comprises at least two independent feeding pumps.

4. A continuous flow synthesis system of cis-4-hydroxycyclohexanecarboxylic acid according to claim 1, characterized in that: The mixing assembly comprises at least two micro-channel mixers connected in series, and the channel of each micro-channel mixer is designed in a spiral shape.

5. A continuous flow synthesis system of cis-4-hydroxycyclohexanecarboxylic acid according to claim 1, characterized in that: The drying unit comprises at least one vacuum drying chamber, and an adjustable heating plate is arranged in the vacuum drying chamber.

6. A continuous flow synthesis system of cis-4-hydroxycyclohexanecarboxylic acid according to claim 1, characterized in that: The drying unit is further connected with at least one gas scrubber, and the gas scrubber adopts a wet scrubbing technology.

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