Chemical synthesis continuous reaction workstation

Abstract

The utility model discloses a chemical synthesis continuous reaction work station, which belongs to reaction equipment in the technical field of chemical production equipment, and adopts the technical scheme that the chemical synthesis continuous reaction work station comprises a feeding device used for inputting various materials; the output end of the feeding device is communicated with the interior of the high-pressure reactor; the high-pressure separator is communicated with the output end of the high-pressure reactor, a first back pressure valve is arranged at the upper end of the high-pressure separator, and a second back pressure valve is arranged at the lower end of the high-pressure separator; the output end of the second back pressure valve is communicated with a normal-pressure reboiler, and the top of the normal-pressure reboiler is communicated with a rectifying tower through a distiller; the utility model provides a chemical synthesis continuous reaction workstation, which realizes continuous and stable production of chemical synthesis products by arranging the feeding device to feed various materials and continuously processing the high-pressure reactor and the high-pressure separator.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical production equipment, and particularly relates to a chemical synthesis continuous reaction workstation. Background Art

[0002] In the production process of chemical engineering, a reaction kettle is usually equipped with a condenser, which is used to condense the steam evaporated from the reaction kettle and make it flow back to the reaction kettle to continue participating in the reaction, playing a role in removing the reaction heat and controlling the reaction temperature. Before the reaction steam condenses and flows back to the reaction kettle, the steam needs to pass through a dehydration system to remove the heavy components (such as water, etc.) entrained in the raw materials, preventing the accumulation of heavy components in the reactor, causing pressure fluctuations and affecting the product quality.

[0003] In the fields of fine chemical industry and chemical synthesis, batch reactions in kettles are generally used. However, the batch reaction has low efficiency, low product conversion rate, high energy consumption, large floor area, and large infrastructure investment. Continuous reaction feeds continuously and discharges continuously, with a production line process, small occupied space, and low danger. It can truly achieve intrinsic safety by "micro" to prevent danger and has been widely used in fields such as nitrification, oxidation, hydrogenation, chlorination, and diazotization. It is an inevitable future development trend of fine chemical industry and chemical synthesis. However, some reactions need to be synthesized under high pressure and separated under normal pressure, with different pressures at the front and rear ends of the production line, which brings difficulties to continuous production. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a chemical synthesis continuous reaction workstation, which realizes the continuous and stable production of chemical synthesis products through the feeding device for feeding multiple materials and the continuous processing of the set high-pressure reactor and high-pressure separator.

[0005] The purpose of the utility model is realized as follows. A chemical synthesis continuous reaction workstation includes:

[0006] A feeding device for inputting multiple materials;

[0007] A high-pressure reactor, the output end of the feeding device is communicated with the inside of the high-pressure reactor;

[0008] A high-pressure separator, the high-pressure separator is communicated with the output end of the high-pressure reactor, a first back-pressure valve is arranged at the upper end of the high-pressure separator, and a second back-pressure valve is arranged at the lower end of the high-pressure separator; and

[0009] The output end of the second back-pressure valve is communicated with an atmospheric reboiler, and the top of the atmospheric reboiler is communicated with a rectifying column through a distiller.

[0010] Further, the feeding device includes a gas feeding device, a liquid feeding device, and a solid feeding device, and the gas feeding device, the liquid feeding device, and the solid feeding device are all connected to the inside of the high-pressure reactor.

[0011] Further, a stirring device is provided in the high-pressure reactor.

[0012] Further, a temperature sensor, a pressure sensor, and a PH tester are provided in the high-pressure reactor.

[0013] Further, the high-pressure reactor is connected to the atmospheric reboiler through a pipeline group.

[0014] Further, the discharge end of the distillation column is successively connected with a condenser, a reflux controller, and a product tank.

[0015] Further, the gas feeding device and / or the liquid feeding device are provided with a valve control assembly.

[0016] Further, the reflux ratio of the reflux controller is 0.1 - 3.0.

[0017] The beneficial effects of the present utility model are embodied in:

[0018] 1. In the present utility model, by providing a feeding device, the transportation of solid materials, gas materials, and liquid materials into the inside of the high-pressure reactor for stable mixing reaction treatment is realized. Among them, the high-pressure separator can stir, mix, and heat the incoming materials, improving the reaction efficiency. More specifically, since a first back-pressure valve is provided at the upper end of the high-pressure separator and a second back-pressure valve is provided at the lower end of the high-pressure separator, the reaction pressure of the entire system can be set. The non-condensable gas is discharged from above the high-pressure separator through the intake tail gas pipe. The liquid is discharged from below the separator and enters the atmospheric reboiler. The produced compound enters the atmospheric reboiler, and by controlling the temperature of the reboiler, the required product is completely vaporized by boiling, passes through the condenser from the top and enters the rectifying section, and other impurities that are not vaporized by boiling are further separated. The distillation column provided is used to further purify the product by controlling the temperature and reflux ratio to obtain the required substance.

[0019] 2. In the present utility model, the gas feeding device is driven by its own pressure and thus enters the high-pressure reactor for reaction. The liquid feeding device can adopt a servo metering pump for feeding, and the solid feeding device can directly weigh and then enter the high-pressure reactor for reaction treatment. Thus, by providing the feeding treatment of three forms of substances, the reaction effect of the reaction substances in the high-pressure reactor is greatly improved.

[0020] 3. In the present utility model, by providing a stirring device in the high-pressure reactor, the effect of fully reacting various initial reactants in the tank body is greatly improved. More specifically, a temperature sensor, a pressure sensor, and a pH tester are provided in the high-pressure reactor to detect the main temperature, pressure, and pH value in the reaction device, thereby facilitating the real-time monitoring of the substance reaction and ensuring the effect.

[0021] 4. In the present utility model, a condenser and a reflux controller are successively connected and provided at the discharge end of the rectifying column, and the final product is transported to the product tank for centralized storage and collection. Among them, the condenser adjusts the temperature of the product, and the reflux controller sets the reflux ratio, so that the product is further purified, and thus the required substance is obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts do not necessarily draw according to the actual scale.

[0023] Figure 1 It is a schematic structural diagram of the workstation system of the present utility model.

[0024] In the drawings, 1 - feeding device, 2 - high-pressure reactor, 3 - high-pressure separator, 4 - first back pressure valve, 5 - second back pressure valve, 6 - atmospheric reboiler, 7 - distiller, 8 - rectifying column, 9 - gas feeding device, 10 - liquid feeding device, 11 - solid feeding device, 12 - pipeline group, 13 - condenser, 14 - reflux controller, 15 - product tank, 16 - valve control assembly. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will describe in detail the embodiments of the technical solutions of the present utility model with reference to the drawings. The following embodiments are only used to illustrate the technical solutions of the present utility model more clearly, so they are only examples and cannot be used to limit the protection scope of the present utility model.

[0026] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which the present utility model belongs.

[0027] Refer to Figure 1 , a continuous chemical synthesis reaction workstation, comprising:

[0028] A feeding device 1 for inputting a variety of materials;

[0029] A high-pressure reactor 2, the output end of the feeding device 1 is communicated with the inside of the high-pressure reactor 2;

[0030] A high-pressure separator 3, the high-pressure separator 3 is communicated with the output end of the high-pressure reactor 2, a first back-pressure valve 4 is arranged at the upper end of the high-pressure separator 3, and a second back-pressure valve 5 is arranged at the lower end of the high-pressure separator 3; and

[0031] The output end of the second back-pressure valve 5 is communicated with an atmospheric reboiler 6, and the top of the atmospheric reboiler 6 is communicated with a rectifying column 8 through a distiller 7.

[0032] It can be understood that by setting the feeding device 1, the transportation of solid materials, gas materials and liquid materials to the inside of the high-pressure reactor 2 is realized for stable mixing reaction treatment. Among them, the high-pressure separator 3 can stir, mix and heat the incoming materials to improve the reaction efficiency. More specifically, since a first back-pressure valve 4 is arranged at the upper end of the high-pressure separator 3 and a second back-pressure valve 5 is arranged at the lower end of the high-pressure separator 3, the reaction pressure of the whole system can be set. The non-condensable gas is discharged from above the high-pressure separator 3 through the intake tail gas pipe. The liquid is discharged from below the separator and enters the atmospheric reboiler 6. The produced compound enters the atmospheric reboiler 6. By controlling the temperature of the reboiler, the required product is completely vaporized by boiling and enters the rectifying section from the top through the condenser 13. Other impurities that are not vaporized by boiling are further separated. The set rectifying column 8 further purifies the product by controlling the temperature and reflux ratio to obtain the required substance.

[0033] Preferably, the feeding device 1 includes a gas feeding device 9, a liquid feeding device 10 and a solid feeding device 11, and the gas feeding device 9, the liquid feeding device 10 and the solid feeding device 11 are all communicated with the inside of the high-pressure reactor 2.

[0034] The gas feeding device 9 is driven by its own pressure and thus enters the high-pressure reactor 2 for reaction. The liquid feeding device 10 can adopt a servo metering pump for feeding. In the solid feeding device 11, weighing can be directly carried out and then enter the high-pressure reactor 2 for reaction treatment. Thus, by providing the feeding treatment of three forms of substances, the reaction effect of the reaction substances in the high-pressure reactor 2 is greatly improved.

[0035] Preferably, a stirring device is arranged in the high-pressure reactor.

[0036] Preferably, a temperature sensor, a pressure sensor and a PH tester are arranged in the high-pressure reactor 2.

[0037] As a preferred embodiment of this example, by providing a stirring device in the high-pressure reactor 2, the effect of sufficient reaction of various initial reactants in the tank body is greatly improved. More specifically, a temperature sensor, a pressure sensor, and a PH tester are provided in the high-pressure reactor 2 to detect the main temperature, pressure, and PH value in the reaction device, thereby facilitating the real-time monitoring of the substance reaction and ensuring the effect.

[0038] Preferably, the high-pressure reactor 2 is connected to the atmospheric reboiler 6 through a pipeline group 12.

[0039] Preferably, the discharge end of the distillation column 8 is sequentially connected to a condenser 13, a reflux controller 14, and a product tank 15.

[0040] It can be understood that by sequentially connecting a condenser 13 and a reflux controller 14 to the discharge end of the distillation column 8 and transporting the final product to the product tank 15 for centralized storage and collection. Among them, the condenser 13 controls the temperature of the product, and the reflux controller 14 sets the reflux ratio, so that the product is further purified, and the required substance is obtained.

[0041] Preferably, the gas feeding device 9 and / or the liquid feeding device 10 are provided with a valve control assembly 16.

[0042] Preferably, the reflux ratio of the reflux controller 14 is 0.1 - 3.0.

[0043] As a preferred embodiment of this example, the reflux ratio of the reflux controller 14 is 2.2.

[0044] The working principle and process of the present utility model:

[0045] When the chemical synthesis continuous reaction workstation provided by the present utility model is in use, through the setting of the feeding device 1, solid materials, gas materials, and liquid materials are transported into the high-pressure reactor 2 for stable mixing reaction treatment. Among them, the high-pressure separator 3 can stir, mix, and heat the incoming materials to improve the reaction efficiency.

[0046] More specifically, since a first backpressure valve 4 is provided at the upper end of the high-pressure separator 3 and a second backpressure valve 5 is provided at the lower end of the high-pressure separator 3, the reaction pressure of the entire system can be set. The non-condensable gas is discharged from above the high-pressure separator 3 and enters the intake tail gas pipe. The liquid is discharged from below the separator and enters the atmospheric reboiler 6. The produced compound enters the atmospheric reboiler 6. By controlling the temperature of the reboiler, all the required products are boiled and vaporized, and enter the rectification section from the top through the condenser 13. Other impurities that are not boiled and vaporized are further separated. The rectification column 8 provided is used to further purify the product by controlling the temperature and reflux ratio to obtain the required substance.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. A chemical synthesis continuous reaction workstation, characterized in that: include: A feeding device (1) is used for inputting various materials; A high-pressure reactor (2), wherein the output end of the feeding device (1) is connected to the interior of the high-pressure reactor (2); a high-pressure separator (3), the high-pressure separator (3) being connected to the output end of the high-pressure reactor (2), the upper end of the high-pressure separator (3) being provided with a first back-pressure valve (4), and the lower end of the high-pressure separator (3) being provided with a second back-pressure valve (5); and The output end of the second back pressure valve (5) is connected to a normal pressure reboiler (6), and the top of the normal pressure reboiler (6) is connected to a distillation tower (8) via a distiller (7).

2. The chemical synthesis continuous reaction workstation according to claim 1, characterized in that: The feeding device (1) comprises a gas feeding device (9), a liquid feeding device (10) and a solid feeding device (11), and the gas feeding device (9), the liquid feeding device (10) and the solid feeding device (11) are all connected to the interior of the high-pressure reactor (2).

3. The chemical synthesis continuous reaction workstation according to claim 2, characterized in that: The high-pressure reactor is provided with a stirring device.

4. The chemical synthesis continuous reaction workstation according to claim 3, characterized in that: The high-pressure reactor (2) is provided with a temperature sensor, a pressure sensor and a pH tester.

5. The chemical synthesis continuous reaction workstation according to claim 1, characterized in that: The high-pressure reactor (2) is connected to the atmospheric-pressure reboiler (6) via a pipeline group (12).

6. The chemical synthesis continuous reaction workstation according to claim 1, characterized in that: The discharge end of the distillation tower (8) is connected in sequence to a condenser (13), a reflux controller (14) and a product tank (15).

7. The chemical synthesis continuous reaction workstation according to claim 2, characterized in that: The gas feed device (9) and / or the liquid feed device (10) is provided with a valve control component (16).

8. The chemical synthesis continuous reaction workstation according to claim 6, characterized in that: The reflux ratio of the reflux controller (14) is 0.1-3.0.

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