Continuous flow gas oxidant oxidation reaction device

Abstract

The utility model discloses a continuous flow gas oxidant oxidation reaction device which comprises a reaction raw material storage tank, a gas oxidant steel cylinder, a static mixer, a pipeline reactor and a material storage tank, the reaction raw material storage tank and the gas oxidant steel cylinder are respectively connected with the inlet end of the static mixer; a liquid flowmeter is mounted between the reaction raw material storage tank and the static mixer; a gas flow meter is mounted between the gas oxidant steel cylinder and the static mixer; the liquid flow meter and the gas flow meter are respectively in signal connection with the program controller, and are in linkage control connection with a gas switch valve of the gas oxidant steel cylinder through the program controller; the outlet end of the static mixer is sequentially connected with the pipeline reactor and the material storage tank. The conveying amount of the gas oxidizing agent is accurately controlled, and the potential safety hazard caused by excessive gas oxidizing agent is avoided; according to the device, the oxidation reaction quality is improved, the generation of peroxidation impurities is reduced, a gas oxidant can be effectively and safely utilized, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the field of chemical reaction engineering, in particular to a continuous flow gas oxidant oxidation reaction device. Background Art

[0002] Oxidation reaction is a common type of reaction in chemical and chemical reactions. There are two main types of oxidants used in oxidation reactions: one is gaseous oxidants, such as oxygen and chlorine; the other is liquid oxidants, such as sodium hypochlorite solution, potassium permanganate solution, peracetic acid, etc.

[0003] For oxidation reactions using gaseous oxidants, most of the existing technologies use kettle reactors as reaction equipment. However, the use of gas as an oxidant, coupled with the fact that it is usually carried out in a kettle reactor in the prior art, on the one hand, due to the fast reaction speed and obvious heat release, there is a safety risk of explosion, and once a safety accident occurs, the destructive force generated is often relatively large; on the other hand, the reaction speed is fast, the reaction process is difficult to control, and peroxide impurities are easily generated, affecting the quality and yield of the product. This has prevented gaseous oxidants from being widely used in pharmaceutical and chemical production. Utility Model Content

[0004] The utility model solves the above-mentioned shortcomings of the prior art which uses gases such as chlorine and oxygen as oxidants by providing a continuous flow gas oxidant oxidation reaction device.

[0005] In order to solve the above technical problems, the utility model provides a continuous flow gas oxidant oxidation reaction device, comprising: a reaction raw material storage tank, a gas oxidant cylinder, a static mixer, a pipeline reactor and a material storage tank;

[0006] The discharge port of the reaction raw material storage tank and the gas outlet of the gas oxidant cylinder are respectively connected to the inlet end of the static mixer through pipelines;

[0007] A liquid flow meter is installed on the pipeline between the reaction raw material storage tank and the static mixer;

[0008] A gas flow meter is installed on the pipeline between the gas oxidant cylinder and the static mixer;

[0009] The liquid flow meter and the gas flow meter are respectively connected to the program controller signal;

[0010] The liquid flow meter is connected to the material switch valve on the discharge port of the reaction raw material storage tank through the program controller in linkage control;

[0011] The gas flow meter is connected to the gas switch valve on the gas outlet of the gas oxidant cylinder through the program controller in linkage control;

[0012] The outlet end of the static mixer is connected to the inlet end of the pipeline reactor, and the pipeline reactor is connected to the material storage tank.

[0013] In a preferred embodiment of the present invention, a feed pump is also installed on the pipeline between the reaction raw material storage tank and the static mixer.

[0014] In a preferred embodiment of the present invention, the switch valve of the feed pump is connected to the program controller.

[0015] In a preferred embodiment of the present invention, a back pressure valve is installed on the connecting pipeline between the pipeline reactor and the material storage tank.

[0016] In a preferred embodiment of the present invention, the number of the pipeline reactors is more than 2, and the pipeline reactors are arranged at intervals.

[0017] In a preferred embodiment of the present invention, the pipeline reactor is a straight pipeline reactor, a spiral pipeline reactor or a serpentine pipeline reactor.

[0018] The beneficial effects of the utility model are as follows: the utility model is a continuous flow gas oxidant oxidation reaction device, which realizes precise control of the delivery amount of the gas oxidant through the design of a liquid flow meter, a gas flow meter and a program controller, and provides the amount needed to avoid safety hazards in production caused by excessive use; through the combined design of a static mixer and a pipeline flow meter, the gas oxidant is evenly and quickly mixed in the reaction material, the reaction quality is improved, and the generation of peroxidation impurities is reduced; the utility model can effectively and safely utilize the gas oxidant, lays a foundation for the application of the gas oxidant in pharmaceutical and chemical production, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a preferred embodiment of a continuous flow gas oxidant oxidation reaction device of the utility model;

[0020] The markings of the components in the accompanying drawings are as follows:

[0021] 10. Reaction raw material storage tank, 20. Gas oxidant cylinder, 30. Static mixer, 40. Pipeline reactor, 50. Back pressure valve, 60. Material storage tank, 70. Liquid flow meter, 80. Gas flow meter, 90. Program controller, 11. Liquid pipeline, 12. Feed pump, 13. Material switch valve, 21. Gas pipeline, 22. Gas switch valve, 41. First pipeline mixer, 42. Second pipeline mixer. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0023] See also Figure 1 , the utility model embodiment includes:

[0024] Example 1

[0025] The utility model discloses a continuous flow gas oxidant oxidation reaction device, comprising: a reaction raw material storage tank 10, a gas oxidant cylinder 20, a static mixer 30, a pipeline reactor 40, a back pressure valve 50 and a material storage tank 60.

[0026] The reaction material storage tank 10 contains the reaction materials (other materials except the oxidant) to be subjected to the oxidation reaction. The discharge port of the reaction material storage tank 10 is connected to the inlet end of the static mixer 30 through a liquid pipeline 11. A feed pump 12 and a liquid flow meter 70 are installed on the liquid pipeline 11. The liquid flow meter 70 is used to measure the output of the reaction material per unit time in real time, and the feed pump 12 is used to transport the reaction material to the static mixer 30. The discharge port of the reaction material storage tank 10 is also provided with a material switch valve 13.

[0027] The gas outlet of the gas oxidant cylinder 20 is connected to the inlet end of the static mixer 30 through a gas pipeline 21. A gas flow meter 80 is installed on the gas pipeline 21. The gas flow meter 80 is used to measure the output of the gas oxidant per unit time in real time. The gas outlet of the gas oxidant cylinder 20 is provided with a gas switch valve 22.

[0028] The continuous flow gas oxidant oxidation reaction device is also provided with a program controller 90 .

[0029] Specifically,

[0030] The liquid flow meter 70 is connected to the program controller 90 by signal, and is used to measure the outflow or delivery amount of the reaction material per unit time in real time.

[0031] The gas flow meter 80 is connected to the program controller 90 by signal, and is used to measure the output of the gas oxidant per unit time in real time.

[0032] The electromagnetic switch valve of the feed pump 12 is connected to the program controller 90 by signal, so as to realize automatic control of the opening and closing of the feed pump 12 and improve the degree of automation.

[0033] The liquid flow meter 70 is connected to the material switch valve 13 on the discharge port of the reaction raw material storage tank 10 through the program controller 90 to adjust the opening of the material switch valve 13, thereby accurately controlling the flow of the reaction material.

[0034] The gas flow meter 80 is connected to the gas switch valve 22 on the outlet of the gas oxidant cylinder 20 through the program controller 90 to adjust the opening of the gas switch valve 22, thereby accurately controlling the flow of the gas oxidant.

[0035] In addition, the liquid flow meter 70 and the gas flow meter 80 are connected to the gas switch valve 22 of the gas oxidant cylinder 20 through the program controller 90. After the liquid flow meter 70 detects the output of the reaction material per unit time, it sends a signal to the program controller 90, and the program controller 90 adjusts the opening of the gas switch valve 22 so that the output of the gas oxidant is equal to the amount required for the reaction, thereby achieving precise control of the amount of the gas oxidant, preventing the gas oxidant from excessively generating peroxide impurities or causing explosion risks, and helping to improve the quality and safety performance of the oxidation reaction.

[0036] The outlet end of the static mixer 30 is connected to the inlet end of the pipeline reactor 40. The pipeline reactor 40 is connected to the material storage tank 60.

[0037] The static mixer 30 can improve the mixing effect of the gas and liquid phases, so that the gas oxidant is quickly and evenly mixed in the reaction materials, thereby promoting the oxidation reaction.

[0038] The pipeline reactor 40 is any one of a straight pipeline, a spiral pipeline or a serpentine pipeline. The gas-liquid mixture flows forward in a plug flow in the pipeline mixer and undergoes oxidation reaction, which can effectively avoid "back-mixing phenomenon", thereby reducing the generation of peroxidation impurities and improving the oxidation reaction effect.

[0039] The number of the pipeline reactors 40 is more than 2 and they are arranged at intervals. The design of two or more pipeline mixers arranged at intervals facilitates the increase of production capacity on the one hand; on the other hand, the pipeline reactors arranged at intervals allow the oxidation reaction to be carried out in stages, which helps to reduce the oxidation reaction rate, make the oxidation reaction rate catalyzed by the gas oxidant controllable, reduce the generation of peroxidation impurities, and improve the quality of the reaction product.

[0040] In this embodiment, there are two pipeline reactors 40, namely a first pipeline mixer 41 and a second pipeline mixer 42. The first pipeline mixer 41 and the second pipeline mixer 42 are arranged at an interval.

[0041] The back pressure valve 50 is installed on the pipeline between the pipeline reactor 40 and the material storage tank 60. Specifically, in this embodiment, the back pressure valve 50 is installed between the second pipeline mixer 42 and the material storage tank 60.

[0042] Through the design of the back pressure valve 50, the entire continuous flow gas oxidant oxidation reaction device is placed in a positive pressure state, which helps to promote the gas oxidant to dissolve better and more fully in the reaction materials, avoid the existence of gas-liquid two phases, and thus improve the oxidation reaction effect.

[0043] The utility model discloses a continuous flow gas oxidant oxidation reaction device, which improves the mixing speed and mixing effect of the gas oxidant in the liquid reaction material through the dual design of a static mixer and a back pressure valve; through the design of a liquid flow meter, a gas flow meter and a program controller, the delivery amount of the gas oxidant is accurately controlled to avoid excessive delivery, thereby being able to effectively and safely utilize the gas oxidant, reduce the generation of peroxidation impurities, improve the quality of oxidation products, achieve safe production, and lay a foundation for the application of the gas oxidant in pharmaceutical and chemical production.

[0044] The gaseous oxidant used in the above embodiments is preferably oxygen.

[0045] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A continuous flow gas oxidant oxidation reaction device, characterized in that: include: Reaction raw material storage tanks, gas oxidant cylinders, static mixers, pipeline reactors and material storage tanks; The discharge port of the reaction raw material storage tank and the gas outlet of the gas oxidant cylinder are respectively connected to the inlet end of the static mixer through pipelines; A liquid flow meter is installed on the pipeline between the reaction raw material storage tank and the static mixer; A gas flow meter is installed on the pipeline between the gas oxidant cylinder and the static mixer; The liquid flow meter and the gas flow meter are respectively connected to the program controller signal; The liquid flow meter is connected to the material switch valve on the discharge port of the reaction raw material storage tank through the program controller in linkage control; The gas flow meter is connected to the gas switch valve on the gas outlet of the gas oxidant cylinder through the program controller in linkage control; The outlet end of the static mixer is connected to the inlet end of the pipeline reactor, and the pipeline reactor is connected to the material storage tank.

2. A continuous flow gas oxidant oxidation reaction device according to claim 1, characterized in that: A feed pump is also installed on the pipeline between the reaction raw material storage tank and the static mixer.

3. A continuous flow gas oxidant oxidation reaction device according to claim 2, characterized in that: The switch valve of the feed pump is connected to the program controller.

4. A continuous flow gas oxidant oxidation reaction device according to claim 2, characterized in that: A back pressure valve is installed on the connecting pipeline between the pipeline reactor and the material storage tank.

5. A continuous flow gas oxidant oxidation reaction device according to any one of claims 1 to 4, characterized in that: The number of the pipeline reactors is more than 2, and the pipeline reactors are arranged at intervals.

6. A continuous flow gas oxidant oxidation reaction device according to claim 5, characterized in that: The pipeline reactor is a straight pipeline reactor, a spiral pipeline reactor or a serpentine pipeline reactor.

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