Temperature control device of reaction kettle
By introducing control devices and systems into the reactor, combining high and low temperature pipeline circulation pumps and fuzzy PID adaptive controllers, the problems of low heating efficiency and inaccurate temperature control of the reactor are solved, and efficient and energy-saving temperature control is achieved, which is suitable for pharmaceutical and chemical production.
Patent Information
- Application Number
- CN202422048440.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The heating device of the existing reactor is inefficient, unable to achieve assembly line operation, low temperature control accuracy, and insufficient energy saving, which cannot meet pharmaceutical production requirements.
Control devices and systems are adopted, including the main frame of the equipment, reactor body, high and low temperature pipeline circulation pump, pneumatic membrane regulating valve, switch valve, expansion tank, medium heat exchanger and control components. Accurate temperature control is achieved through the heating module, constant temperature module and cooling module, and combined with a programmable controller and a fuzzy PID adaptive controller, it achieves rapid response and power outage protection.
It realizes multi-step programming control, with accurate and fast temperature control, has temperature difference protection function, energy saving and consumption reduction, and is suitable for pharmaceutical and chemical processes, reducing damage to the reactor and improving the degree of automation.
Smart Images
Figure CN223092346U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of temperature control, and relates to a temperature control device for a reaction kettle. Background Art
[0002] A reaction kettle is a container for physical or chemical reactions. Through the structural design and parameter configuration of the container, functions such as heating, evaporation, cooling, and mixing at low and high speeds required by the process are realized. Reaction kettles are widely used in petroleum, chemical industry, rubber, pesticides, dyes, pharmaceuticals, and food, and are pressure vessels used to complete process processes such as vulcanization, nitrification, hydrogenation, alkylation, polymerization, and condensation, such as reactors, reaction pots, decomposition pots, polymerization kettles, etc. The materials are generally carbon manganese steel, stainless steel, zirconium, nickel-based (Hastelloy, Monel, Inconel) alloys, and other composite materials.
[0003] A reaction kettle is a comprehensive reaction container. According to the design of the structure, function, and configuration accessories of the reaction kettle under reaction conditions, from the beginning of feeding - reaction - discharging, it can complete the preset reaction steps with a high degree of automation, and strictly control important parameters such as temperature, pressure, mechanical control (stirring, air blowing, etc.), and reactant / product concentration during the reaction process. The reaction kettle for pharmaceutical use has extremely high requirements for temperature. When the temperature difference is large, it will affect the polymerization reaction or other chemical reactions of each component of the drug. The existing heating devices for reaction kettles can only heat or cool a single reaction kettle alone, with low efficiency, unable to achieve pipeline operation, and during the heating process of the reaction kettle, they are often not energy-saving, with low efficiency, and the temperature control accuracy is not high enough to meet the requirements of pharmaceutical production and needs to be improved. Summary of the Invention
[0004] The purpose of the utility model is to provide a temperature control device for a reaction kettle to solve the problems raised in the above background art.
[0005] The purpose of the utility model can be achieved by the following technical solutions: A temperature control device for a reaction kettle includes a control device and a control system. The control device consists of an equipment main body framework, a reaction kettle body, a high and low temperature pipeline circulation pump, a pneumatic diaphragm regulating valve, a switching valve, an expansion tank, an inlet and outlet pipeline, a medium heat exchanger, and a control component. And the equipment main body framework and the reaction kettle body are regulated through the control system. And the high and low temperature pipeline circulation pump, the pneumatic diaphragm regulating valve, the switching valve, the expansion tank, the mixer, and the medium heat exchanger are arranged inside the equipment main body framework. The control system consists of a heating module, a constant temperature module, and a cooling module. Among them, the high and low temperature pipeline circulation pump is a high and low temperature resistant centrifugal magnetic pump, the material of the expansion tank is SUS304, and the internal volume is 10L.
[0006] In the temperature control device of the above-mentioned reactor, the inlet and outlet pipelines include the reactor jacket inlet and outlet, the heat medium medium inlet and outlet, the refrigerant medium inlet and outlet, and the compressed air inlet. A low-temperature liquid inlet pipeline and a low-temperature liquid discharge pipeline are arranged between the reactor body and the equipment main body frame. A steam pipeline and a condensate pipeline are arranged at the back position of the equipment main body frame.
[0007] In the temperature control device of the above-mentioned reactor, one end of the low-temperature liquid inlet pipeline is communicated with the reactor jacket inlet and outlet through a high-low temperature pipeline circulation pump, and temperature sensors and pressure sensors are arranged at both the inlet end and the outlet end of the low-temperature liquid inlet pipeline. The low-temperature liquid inlet pipeline exchanges heat through a medium heat exchanger and a steam pipeline. The temperature sensors and pressure sensors adopted above are both existing publicly disclosed sensor structures, and the medium heat exchanger is an existing publicly disclosed spiral wound heat exchanger.
[0008] In the temperature control device of the above-mentioned reactor, the functions of the heating module, the constant temperature module, and the cooling module are specifically as follows: According to the requirements of temperature adjustment in the reactor and the heat absorption and heat release conditions of the materials during the reaction process, the heating module, the constant temperature module, and the cooling module will make timely responses and accurately and quickly adjust the working conditions of various automatic control valves of the control device to achieve the purpose of temperature control.
[0009] In the temperature control device of the above-mentioned reactor, one end of the low-temperature liquid discharge pipeline is communicated with the reactor jacket inlet and outlet, and temperature sensors and pressure sensors are arranged at both the inlet end and the outlet end of the low-temperature liquid discharge pipeline. The temperature sensors and pressure sensors are both existing publicly disclosed sensors, and the specific model is PT100.
[0010] In the temperature control device of the above-mentioned reactor, an expansion tank is arranged at the outlet end of the low-temperature liquid discharge pipeline, and the output port of the expansion tank is communicated with the low-temperature liquid inlet pipeline. Pneumatic diaphragm control valves and switch valves are arranged on the low-temperature liquid inlet pipeline, the low-temperature liquid discharge pipeline, the steam pipeline, and the condensate pipeline. The pneumatic diaphragm control valves and the switch valves are both controlled by a control component, and the control component is a programmable controller, and the programmable controller is a fuzzy PID adaptive controller.
[0011] In the temperature control device of the above-mentioned reactor, the control system further includes a main screen unit, a trend curve unit, an operation setting unit, an alarm record unit, a log record unit, and a permission management unit. The structures of the above-mentioned disclosed units are all operation units for the temperature control of the reactor in this application. Operate the touch screen. In the main screen unit, set the target temperature SV temperature value, press the "Start" button, and the circulation pump will automatically start, and the temperature control system will automatically run. The "Circulation" button works independently; when "Circulation On" is selected, the system circulation pump runs; Note: The circulation pump automatically starts under the running state. Through the operation of the trend curve unit, the "Trend Curve" can be switched during the system operation to view the temperature control curve in real time. When the "Alarm Clear" indicator on the main interface is red, it means that the system has a fault and the fault should be eliminated. After clicking "Alarm Clear" through the alarm record unit, the system can be run. The fault content can be viewed in the alarm record unit and the log record unit. In the operation setting unit, the system can set the operation mode, can be programmed in multiple steps, and each section of the program can freely select two control methods of temperature and time to execute the program.
[0012] Compared with the prior art, the advantages of the temperature control device of the reaction kettle of the present utility model are as follows
[0013] 1. This device can simultaneously meet the selection of the material temperature mode and the heat transfer medium temperature control mode, and can be better compared and traced in the process control of pharmaceutical chemistry. It has strong repeatability and operability, can be programmed in multiple steps, and each section of the program can freely select two control methods of temperature and time to execute the program.
[0014] 2. It has a power-off protection function. After a power outage, the regulating valve will automatically close, the controller will automatically reset and keep various set parameters and operating state parameters unchanged from the settings before the power outage. The programmable controller has a fuzzy PID adaptive controller. Heating and cooling do not require cold and heat confrontation, and has a fast constant temperature operation output function. It controls the temperature of the entire reaction process through precise and fast calculations, and quickly responds to the exothermic and endothermic reactions that occur during the entire reaction process.
[0015] 3. It has a control display screen, which can clearly display various temperatures, including the real-time online control of the outlet temperature and the inlet temperature of the temperature control system, record the temperature curve, and has a temperature difference protection function between the inside and outside of the kettle. The temperature difference between the jacket of the reaction kettle and the inside of the kettle can be freely set. When the temperature difference exceeds the set value during the working process after the temperature difference is set, the control device will make a timely safety response.
[0016] 4. It uses a single heat transfer medium for circulating heating and cooling, avoiding the damage to the reaction kettle caused by directly introducing multiple heat transfer media such as steam, cooling water, or ultra-low temperature liquid into the jacket in traditional equipment. At the same time, the smaller fluid volume also ensures a rapid response to temperature control and a very small thermal reaction delay. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic structural diagram of the temperature control device of the reaction kettle of the present utility model.
[0018] Figure 2 It is a schematic structural diagram of the temperature control process of the temperature control device of the reaction kettle of the present utility model.
[0019] In the figure, 1 is the main equipment frame; 2 is the reaction kettle body; 3 is the high and low temperature pipeline circulation pump; 4 is the medium heat exchanger; 5 is the expansion tank. Specific embodiments
[0020] The following are specific embodiments of the present utility model and in combination with the accompanying drawings, the technical solutions of the present utility model are further described, but the present utility model is not limited to these embodiments.
[0021] The temperature control device of the reaction kettle includes a control device and a control system. The control device is composed of the main equipment frame 1, the reaction kettle body 2, the high and low temperature pipeline circulation pump 3, a pneumatic diaphragm regulating valve, a switching valve, the expansion tank 5, the inlet and outlet pipelines, the medium heat exchanger 4 and a control component. And between the main equipment frame 1 and the reaction kettle body 2, it is regulated through the control system. And the high and low temperature pipeline circulation pump 3, the pneumatic diaphragm regulating valve, the switching valve, the expansion tank 5, the mixer and the medium heat exchanger 4 are arranged inside the main equipment frame 1. The control system is composed of a heating module, a constant temperature module and a cooling module. According to the requirements of temperature regulation in the reaction kettle during the production process in the pharmaceutical and chemical industries and the heat absorption and heat release conditions of the materials during the reaction process, the control module will make timely responses and accurately and quickly adjust the working conditions of various automatic control valve parts of the TCU automatic control system to achieve the purpose of temperature control.
[0022] As Figure 1 、 Figure 2 shown, for the temperature control device of the reaction kettle of the present utility model, specifically, the inlet and outlet pipelines include the reaction kettle jacket inlet and outlet, the heat medium medium inlet and outlet, the cold medium medium inlet and outlet and the compressed air inlet. Between the reaction kettle body 2 and the main equipment frame 1, a low-temperature liquid inlet pipeline and a low-temperature liquid discharge pipeline are provided. At the back position of the main equipment frame 1, a steam pipeline and a condensate pipeline are provided.
[0023] As Figure 1 、 Figure 2 shown, for the temperature control device of the reaction kettle of the present utility model, specifically, one end of the low-temperature liquid inlet pipeline is connected to the reaction kettle jacket inlet and outlet through the high and low temperature pipeline circulation pump 3, and temperature sensors and pressure sensors are arranged at both the inlet end and the outlet end of the low-temperature liquid inlet pipeline. The low-temperature liquid inlet pipeline exchanges heat through the medium heat exchanger 4 and the steam pipeline.
[0024] As Figure 1 、 Figure 2As shown in the figure, the temperature control device of the reaction kettle of the present utility model. Specifically, the functions of the heating module, the constant temperature module, and the cooling module are as follows: According to the requirements of temperature adjustment in the reaction kettle and the heat absorption and heat release conditions of the materials during the reaction process, the heating module, the constant temperature module, and the cooling module will react in a timely manner and accurately and quickly adjust the working conditions of various automatic control valve parts of the control device to achieve the purpose of temperature control.
[0025] As Figure 1 , Figure 2 shown in the figure, the temperature control device of the reaction kettle of the present utility model. Specifically, one end of the low-temperature liquid discharge pipe is connected to the inlet and outlet of the reaction kettle jacket, and temperature sensors and pressure sensors are provided at both the inlet end and the outlet end of the low-temperature liquid discharge pipe.
[0026] As Figure 1 , Figure 2 shown in the figure, the temperature control device of the reaction kettle of the present utility model. Specifically, an expansion tank 5 is provided at the outlet end of the low-temperature liquid discharge pipe, and the output port of the expansion tank 5 is connected to the low-temperature liquid inlet pipe. Pneumatic diaphragm control valves and on-off valves are provided on the low-temperature liquid inlet pipe, the low-temperature liquid discharge pipe, the steam pipe, and the condensate pipe. The pneumatic diaphragm control valves and the on-off valves are both controlled by a control component, and the control component is a programmable controller, and the programmable controller is a fuzzy PID adaptive controller.
[0027] As Figure 1 , Figure 2 shown in the figure, the temperature control device of the reaction kettle of the present utility model. Specifically, the control system further includes a main screen unit, a trend curve unit, an operation setting unit, an alarm record unit, a log record unit, and a permission management unit. The structures of the above-mentioned disclosed units are all operation units of the present application during the temperature control of the reaction kettle.
[0028] The temperature control device of the reaction kettle of the present utility model. The equipment uses a power supply of 50HZ 380V, and the power of the power supply should be greater than or equal to the total power of the instrument. The power supply must have a good "grounding" device. Pay attention to the phase sequence of the three-phase power supply. There is protection inside the equipment. If it is incorrect, exchange the phase sequence. Before starting the machine, conduct a startup check to confirm that the pipeline connection is leak-free. Input the common system, turn on the heat source, turn on the gas source, and the gas source pressure is 0.5MPa. Turn on the device power supply, the power supply is energized, turn on the power switch of the explosion-proof box, and the explosion-proof touch screen powers on and displays. Then log in to the control system through the system login module, input the user name and the corresponding password. After the system logs in, adjust the main screen unit of the system, operate the touch screen, set the target temperature SV temperature value, press the "Start" button, and the circulation pump automatically starts, and the temperature control system automatically runs. The "Circulation" button works independently. When "Circulation On", the system circulation pump runs. Note: The circulation pump automatically starts under the running state. Through the operation of the trend curve unit, the "Trend Curve" can be switched during the system operation to view the temperature control curve in real time. When the "Alarm Clear" indicator on the main interface is red, it means that there is a fault in the system, and the fault should be eliminated. After clicking "Alarm Clear" through the alarm record unit, the system can be run. The fault content can be viewed in the alarm record unit and the log record unit. In the operation setting unit, the system can set the operation mode, can be programmed in multiple steps, and each program segment can freely select two control methods of temperature and time to execute the program. The present utility model utilizes the existing common energy of the user, such as steam, the low-temperature refrigerant transported by the low-temperature compressor refrigeration system in the freezing workshop, and cooling water, and integrates them into a single-fluid system or a secondary loop used to control the temperature of the equipment required for pharmaceutical and chemical processes through heat exchange, forming a single heat conduction medium to circulate and heat or cool the jacket of the reaction vessel, rather than the traditional direct injection of steam, cooling water or ultra-low temperature liquid into the jacket. Through PLC operation control, the entire reaction process is precisely temperature-controlled according to process requirements, achieving energy conservation and consumption reduction, reducing the working intensity of workers, and ensuring better implementation of the process by improving the degree of automation.
[0029] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art of the present utility model can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.
Claims
1. Temperature control device for a reaction kettle, comprising a control device and a control system, characterized in that, The control device consists of a device main body frame (1), a reaction kettle body (2), a high and low temperature pipeline circulation pump (3), a pneumatic diaphragm regulating valve, a switching valve, an expansion tank (5), an inlet and outlet pipeline, a medium heat exchanger (4) and a control component. The device main body frame (1) and the reaction kettle body (2) are regulated through a control system. The high and low temperature pipeline circulation pump (3), the pneumatic diaphragm regulating valve, the switching valve, the expansion tank (5), the mixer and the medium heat exchanger (4) are arranged inside the device main body frame (1). The control system consists of a heating module, a constant temperature module and a cooling module.
2. The temperature control device of the reactor according to claim 1, characterized in that, The inlet and outlet pipeline includes a reaction kettle jacket inlet and outlet, a heat medium inlet and outlet, a refrigerant medium inlet and outlet and a compressed air inlet. A low temperature liquid inlet pipeline and a low temperature liquid outlet pipeline are arranged between the reaction kettle body (2) and the device main body frame (1). A steam pipeline and a condensate pipeline are arranged at the back position of the device main body frame (1).
3. The temperature control device of the reactor according to claim 2, characterized in that, One end of the low temperature liquid inlet pipeline is communicated with the reaction kettle jacket inlet and outlet through the high and low temperature pipeline circulation pump (3). Temperature sensors and pressure sensors are arranged at both the inlet end and the outlet end of the low temperature liquid inlet pipeline. The low temperature liquid inlet pipeline exchanges heat through the medium heat exchanger (4) and the steam pipeline.
4. The temperature control device of the reactor according to claim 1, characterized in that, The functions of the heating module, the constant temperature module and the cooling module are as follows: According to the requirements of temperature regulation in the reaction kettle and the heat absorption and heat release conditions of the materials during the reaction process, the heating module, the constant temperature module and the cooling module will react in a timely manner and accurately and quickly adjust the working conditions of the automatic control valve parts of the control device to achieve the purpose of temperature control.
5. The temperature control device of the reactor according to claim 3, characterized in that, One end of the low temperature liquid outlet pipeline is communicated with the reaction kettle jacket inlet and outlet. Temperature sensors and pressure sensors are arranged at both the inlet end and the outlet end of the low temperature liquid outlet pipeline.
6. The temperature control device of the reactor according to claim 5, characterized in that, An expansion tank (5) is arranged at the outlet end of the low temperature liquid outlet pipeline. The output port of the expansion tank (5) is communicated with the low temperature liquid inlet pipeline. Pneumatic diaphragm regulating valves and switching valves are arranged on the low temperature liquid inlet pipeline, the low temperature liquid outlet pipeline, the steam pipeline and the condensate pipeline. The pneumatic diaphragm regulating valves and the switching valves are both controlled through a control component. The control component is a programmable controller, and the programmable controller is a fuzzy PID adaptive controller.
7. The temperature control device of the reactor according to claim 1, wherein The control system further includes a main screen unit, a trend curve unit, an operation setting unit, an alarm record unit, a log record unit and a permission management unit.