Reaction runaway inhibitor inhibitor effect test system and test method

Abstract

The present invention relates to a system and method for testing the inhibitory effect of a runaway reaction inhibitor, and belongs to the field of testing technology, and relates to a system and method for testing the inhibitory effect of a runaway reaction inhibitor. It includes a reactor subsystem, a parameter measurement subsystem, an inhibitor mixing subsystem, an inhibitor release subsystem, and a data acquisition and control subsystem; the inhibitor mixing subsystem and the inhibitor release subsystem are connected by a high-pressure metal hose; the data acquisition and control subsystem is respectively connected to the inhibitor release subsystem, the inhibitor mixing subsystem, the reactor subsystem, and the parameter measurement subsystem. The inhibitory effect of the runaway reaction inhibitor is evaluated to achieve a quantitative analysis of the inhibitory effect under different test levels of multiple influencing factors, and at the same time, more test results are provided in a shorter time; a comprehensive and comprehensive investigation is conducted on the inhibitory effect of the runaway reaction inhibitor in actual engineering applications, so as to provide the optimal runaway reaction inhibition strategy.

Description

Technical Field

[0001] The invention discloses a system and a method for testing the inhibitory effect of a reaction runaway inhibitor, and belongs to the technical field of testing, and relates to a system and a method for testing the inhibitory effect of a reaction runaway inhibitor. Background Art

[0002] The chemical industry is an important foundation and pillar industry of my country's national economy. It plays a huge supporting role in the development of energy, electronics, textiles, medicine, national defense and other fields, and is an important source of power for the development of the national economy.

[0003] However, the chemical industry is a high-risk industry, which has different characteristics from other industries:

[0004] 1. Most chemicals have dangerous properties such as being flammable, explosive, toxic, harmful and highly corrosive;

[0005] 2. Most chemical reactions are highly exothermic and may produce dangerous side reactions;

[0006] 3. Chemical production equipment is large-scale and highly integrated. Many reaction processes are high-temperature and high-pressure or low-temperature and negative pressure. Any slight change in process parameters or improper production operation may lead to accidents.

[0007] 4. The chemical industry is technology- and capital-intensive, and accidents cause significant property losses and environmental impacts. Therefore, once an accident occurs in the chemical industry, it is highly destructive and harmful, and can easily cause significant casualties and property losses, or cause long-term, irreversible damage to the environment, and the negative social impact caused by this is even more difficult to estimate. In recent years, serious and major accidents caused by thermal runaway in domestic chemical plants have occurred from time to time.

[0008] Reaction runaway suppression is one of the important technical means to control reaction runaway and reduce the possibility of accidents. Its basic principle is to monitor the reaction process and promptly inject the reaction runaway inhibitor into the reactor in the early stage of reaction runaway. Through physical or chemical means, the reaction process is slowed down or terminated to achieve the effect of reaction runaway suppression.

[0009] According to the different inhibition mechanisms, runaway reaction inhibitors are divided into chemical inhibitors and physical inhibitors. Chemical inhibitors are often used in free radical reactions. The inhibition principle is to capture free radicals by inhibitors, making it difficult for the free radical chain reaction to proceed, thereby slowing down or terminating the reaction. Physical inhibitors usually use solid substances or solvents with large specific heat capacity. Through the large amount of heat absorbed by themselves during the heating process, the temperature in the reactor is reduced, thereby controlling the increase in the reaction rate. At present, many scholars have conducted beneficial explorations and practices in the development of inhibitors and have developed a variety of new types of runaway reaction inhibitors. However, as a safety control technology, the inhibition effect of runaway reaction inhibition depends on the joint action of multiple factors. Therefore, how to analyze and select the best strategy is very complicated. Summary of the invention

[0010] The purpose of the present invention is to provide a reaction runaway inhibitor inhibition effect testing system and testing method for the above-mentioned problem of how to analyze and select the best strategy, which can evaluate the inhibition effect of the reaction runaway inhibitor, realize the quantitative analysis of the inhibition effect under different test levels of multiple influencing factors, and at the same time, provide more test results in a shorter time; conduct a comprehensive and comprehensive investigation on the inhibition effect of the reaction runaway inhibitor in actual engineering applications, so as to provide the optimal reaction runaway inhibition strategy.

[0011] The present invention is achieved by adopting the following technical solutions:

[0012] The reaction runaway inhibitor inhibition effect test system includes a reactor subsystem, a parameter measurement subsystem, an inhibitor mixing subsystem, an inhibitor releasing subsystem and a data acquisition and control subsystem; the inhibitor mixing subsystem and the inhibitor releasing subsystem are connected through a high-pressure metal hose; the data acquisition and control subsystem is respectively connected to the inhibitor releasing subsystem, the inhibitor mixing subsystem, the reactor subsystem and the parameter measurement subsystem.

[0013] The inhibitor mixing subsystem comprises a high-pressure gas cylinder and an inhibitor adding tank, the high-pressure gas cylinder and the inhibitor adding tank are connected via a high-pressure metal hose, and a control valve is provided at the outlet of the high-pressure gas cylinder.

[0014] The inhibitor release subsystem has an inhibitor release nozzle, which is connected to the bottom of the inhibitor addition tank through a high-pressure metal hose, and an inhibitor release control valve is provided at the connection end with the inhibitor addition tank, and the release of the inhibitor is adjusted and controlled by the inhibitor release control valve.

[0015] The inhibitor release nozzle is replaceable and has a variety of replaceable structures. According to experimental test requirements, inhibitor release nozzles with different structures can be selected for experiments.

[0016] The reactor subsystem includes a reaction vessel, a reactor shell, an external temperature control unit of the reaction vessel, an internal temperature control unit of the reaction vessel, a reactor material dispersion device and a reaction vessel upper cover; the reaction vessel is placed in the reactor shell, and the distance between the reaction vessel and the reactor shell is not greater than 0.5 mm; the reaction vessel upper cover is covered on top of the reaction vessel and sealed with the reaction vessel; adapter holes are reserved on the reaction vessel upper cover for the insertion of the reactor material dispersion device, the sensor of the parameter measurement subsystem, the internal temperature control unit of the reaction vessel and the inhibitor release nozzle.

[0017] The reaction container and the upper cover of the reaction container are sealed by a quick-release clamp.

[0018] The reaction container is a glass container, and the material of the upper cover of the reaction container can be glass or polytetrafluoroethylene. After the reaction container is sealed, normal pressure or slightly negative pressure reaction can be achieved.

[0019] The capacity of the reaction container is 200 ml; when a reaction kettle adapter is used, the capacity of the reaction container adapted thereto is 50 ml, and the number of reaction containers is 4.

[0020] The parameter measurement subsystem includes a temperature measurement unit, a turbidity measurement unit, a viscosity and pH measurement unit and / or a flow field measurement unit; and can realize the collection of one or a combination of parameters.

[0021] The temperature measuring unit and the viscosity and pH measuring unit are both inserted into the reaction container through the reserved matching holes on the upper cover of the reaction container.

[0022] The viscosity and pH measurement unit is composed of a vibration element with a vibration viscometer and a pH meter. The vibration element is covered on the outside of the pH meter as a jacket, and the head of the pH meter is exposed 2-3 cm from the vibration element.

[0023] The temperature measurement unit adopts a temperature sensor.

[0024] A sliding guide rail surrounding the outer circumference of the reaction container is arranged inside the reactor shell.

[0025] The flow field measurement unit comprises a laser generator, a laser reflector, a plane imaging lens and an axial section imaging lens; the laser generator and the turbidity measurement unit are closely attached to the outer wall of the reaction container; the plane imaging lens and the axial section imaging lens are respectively mounted on the sliding guide rails in the reactor shell through pulley seats and can slide along the sliding guide rails.

[0026] The turbidity measurement unit adopts a commercially available InPro-8610i turbidity sensor.

[0027] The vibration element of the vibration viscometer is a commercially available HYZY-500 vibration element.

[0028] The pH meter is a commercially available BPH-200A pH meter.

[0029] The temperature sensor is a commercially available PT-1000 thermal resistor.

[0030] The pulley seat has a fixing buckle to achieve positioning.

[0031] The data acquisition and control subsystem includes a data acquisition module, a control module and a computer; the data acquisition module and the computer are connected via a network data line; the input and output ends of the data acquisition module are respectively connected to the inhibitor release subsystem, the inhibitor mixing subsystem, the reaction vessel external temperature control unit, the reaction vessel internal temperature control unit, the reactor material dispersion device and the sensor element in the parameter measurement subsystem via a signal line. The control module and the computer are connected via a network data line; the input and output ends of the control module are respectively connected to the inhibitor release subsystem, the inhibitor mixing subsystem, the reaction vessel external temperature control unit, the reaction vessel internal temperature control unit, the reactor material dispersion device and the sensor element in the parameter measurement subsystem via a signal line.

[0032] Furthermore, the flow field measurement unit also includes a laser reflector, which extends from the upper cover of the reaction container into the interior of the reaction container through a fixed bracket; the laser reflector is deflected at an angle of +45° or -45° from the vertical line, and the center of the laser reflector and the laser emitter are arranged in the same horizontal plane, so that the camera forms four high-speed imaging lenses in the axis and horizontal direction of the reaction container; it can make the horizontally incident plane laser scatter simultaneously in the horizontal plane and the vertical plane, and measure the flow field structure of two vertical planes simultaneously when using one laser generator. Usually, in the field of this field, to realize the flow field measurement of multiple planes, it is necessary to arrange multiple laser emitters, and the consequence of this is that the intersection of multiple light sources is prone to aliasing. The laser reflector provided in the present invention can well avoid this defect, which is conducive to improving the test accuracy, providing a more compact design for the equipment, and fully revealing the flow field structure.

[0033] Furthermore, the reactor shell adopts a reactor adapter and the reaction container adopts a reactor; the reactor adapter can load multiple reactors at the same time. When multiple reactors are loaded, the capacity of the reactants in a single reactor is relatively reduced, which reduces the risk of the reaction and increases the number of tests performed simultaneously. This setting is conducive to speeding up the test efficiency.

[0034] There are cavities or elbows inside and outside the reactor for the flow of cooling or heating media. The cooling medium is water or other coolants, and the heating medium can be steam or hot fluid. According to the actual test requirements, internal cooling and external heating, internal heating and external cooling, or simultaneous heating inside and outside or simultaneous cooling inside and outside can be performed. The hot and cold fluids are regulated by solenoid valves on the pipelines controlled by computers.

[0035] The temperature measurement unit in the parameter measurement subsystem further includes a sensor array composed of multiple temperature sensors. The sensors are vertically distributed along the axial direction of the array and can measure the temperature at different positions inside the reaction system. For the situation where the temperature in the reactor is uneven under laminar flow conditions due to low stirring speed, the temperature distribution of the reaction system can be more comprehensively characterized.

[0036] The advantages of the reaction runaway inhibitor inhibitory effect test system according to the present invention are high integration of reaction parameter measurement methods, strong adjustability of reaction control conditions, and standardized procedures for inhibitor mixing and release.

[0037] The reaction vessel is made of transparent material and is installed in the reactor shell through an embedded design. The distance between the reactor outer wall and the reactor shell is no more than 0.5mm. This embedded design enables the turbidity test optical element to be inserted into the reaction vessel without inserting it, thus achieving non-contact measurement. The spacing of less than 0.5mm enables the laser for flow field testing to project the plane laser into the reaction vessel with less energy loss. In addition, the embedded design can protect the sensor from being corroded by objects in the reaction vessel, which is beneficial to prolonging the life of the sensor.

[0038] The viscosity measurement and pH measurement in the parameter measurement subsystem are measured using a sensor that combines a vibration viscometer and a pH meter. The vibration element of the vibration viscometer is wrapped as a jacket on the outside of the pH meter, and the head of the pH meter is exposed 2-3 cm. The detection principle of the vibration viscometer is to measure the amplitude change of the vibration sensor in the liquid to find the resistance of the liquid and calculate the viscosity of the liquid. Therefore, this combined sensor will not affect the accuracy of the viscosity test result, and the vibration sensor can protect the pH meter, while extending the life of the pH meter, improving the system integration, which is beneficial to reduce the impact of the contact sensor on the flow field in a narrow reaction system and perform accurate measurement of multiple parameters.

[0039] The inhibitor mixing subsystem uses high-pressure gas for dispersion. A pressure gauge is installed on the top of the inhibitor adding tank, and the high-pressure gas inlet pipe is at the bottom of the inhibitor adding tank. This design is conducive to the dispersion of the inhibitor, especially for solid powdered inhibitors. The high-pressure gas at the bottom can mix the inhibitor evenly when loading, without the need to open a hole on the top of the tank and add additional facilities for stirring and mixing, which is conducive to improving the sealing of the inhibitor adding tank.

[0040] The inhibitor release subsystem adopted is controlled by a solenoid valve or a pneumatic ball valve. The end of the release system is equipped with a detachable release nozzle, which can be replaced according to test needs. The shapes of the release nozzles include conical, cylindrical and other axisymmetric cubes. The surface of the release nozzles is provided with circular holes or square holes of different densities. By controlling the injection pressure and adjusting different nozzle shapes and structures, it is beneficial to obtain the optimal combination and optimize the control parameters of the inhibitor release process.

[0041] Advantages of the invention:

[0042] The present invention has a reasonable structure and a perfect design, and can evaluate the inhibitory effect of a runaway reaction inhibitor, thereby realizing a quantitative analysis of the inhibitory effect under different test levels of multiple influencing factors, and at the same time, providing more test results in a shorter time; the inhibitory effect of the runaway reaction inhibitor in actual engineering applications is comprehensively investigated, thereby providing an optimal runaway reaction inhibition strategy.

[0043] 1) The end of the inhibitor release subsystem is equipped with a detachable release nozzle, which can be replaced according to test needs. The surface of the release nozzle is provided with round holes or square holes of different densities to control the injection pressure. By adjusting different nozzle shapes and structures, the optimal combination is obtained to optimize the control parameters of the inhibitor release process.

[0044] 2) The measurement units in the parameter measurement subsystem can be combined arbitrarily to realize the collection of parameters of one or more combinations.

[0045] 3) The laser reflector provided in the present invention can effectively avoid the defect of aliasing easily generated at the intersection of multiple light sources, which is beneficial to improving the test accuracy, providing a more compact design for the equipment, and fully revealing the flow field structure.

[0046] 4) The reactor adapter is used as the reactor shell, which can load multiple reactors at the same time. When multiple reactors are loaded, the capacity of the reactants in a single reactor is relatively reduced, which reduces the risk of reaction and increases the number of tests performed simultaneously. This setting is conducive to speeding up test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The present invention will be further described below in conjunction with the accompanying drawings:

[0048] Figure 1 It is a schematic diagram of the system structure of the present invention;

[0049] Figure 2 A top view of the reactor adapter structure used in the present invention;

[0050] Figure 3It is a structural schematic diagram of the viscosity and pH measurement combined sensor of the present invention.

[0051] In the figure:

[0052] 1. Inhibitor mixing subsystem, 11. High-pressure gas cylinder, 12. Control valve, 13. High-pressure metal hose, 14. Inhibitor adding tank;

[0053] 2. Inhibitor release subsystem, 21. Inhibitor release control valve, 22. High-pressure metal hose, 23. Inhibitor release nozzle;

[0054] 3. Reactor subsystem, 31. Reaction vessel, 32. Reactor housing, 33. External temperature control unit of reaction vessel, 34. Internal temperature control unit of reaction vessel, 35. Reactor material dispersing device, 36. Reaction vessel upper cover, 37. Reactor adapter, 38. Sliding guide rail;

[0055] 4. Parameter measurement subsystem, 41. Temperature measurement unit, 42. Turbidity measurement unit, 43. Viscosity and pH measurement unit, 431. Vibration element, 432. pH meter, 44. Laser reflector, 45. Laser generator, 46. Planar imaging lens, 47. Axial section imaging lens;

[0056] 5. Data acquisition and control subsystem, 51. Data acquisition module, 52. Computer. DETAILED DESCRIPTION

[0057] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0058] See attached Figure 1 The reaction runaway inhibitor inhibition effect test system shown includes an inhibitor mixing subsystem 1 , an inhibitor releasing subsystem 2 , a reactor subsystem 3 , a parameter measurement subsystem 4 , and a data acquisition and control subsystem 5 .

[0059] The inhibitor mixing subsystem 1 includes a high-pressure gas cylinder 11 , a control valve 12 , a high-pressure metal hose 13 , and an inhibitor adding tank 14 . The inhibitor mixing subsystem 1 is connected to the inhibitor releasing subsystem 2 via the high-pressure metal hose 13 .

[0060] The inhibitor release subsystem 2 includes an inhibitor release control valve 21, a high-pressure metal hose 22, and an inhibitor release nozzle 23. The inhibitor release nozzle 23 is connected to the bottom of the inhibitor addition tank 14 through the high-pressure metal hose 22, and the release of the inhibitor is controlled by the inhibitor release control valve 21. The inhibitor release nozzle 23 has a variety of replaceable structures. According to the experimental test requirements, inhibitor release nozzles 23 with different structures are selected for experiments.

[0061] The reactor subsystem 3 further includes a reaction vessel 31, a reactor shell 32, a reaction vessel external temperature control unit 33, a reaction vessel internal temperature control unit 34, a reactor material dispersing device 35, a reaction vessel upper cover 36, a reactor adapter 37, and a sliding guide rail 38. The reaction vessel 31 is placed in the reactor shell 32, and the spacing between the reaction vessel 31 and the reactor shell 32 is not greater than 0.5 mm. The reaction vessel 31 and the reaction vessel upper cover 36 are sealed by a quick release clamp. The reaction vessel upper cover 36 is provided with an adapter hole for inserting the reactor material dispersing device 35, the sensor of the parameter measurement subsystem, the reaction vessel internal temperature control unit 34, and the inhibitor release nozzle 23.

[0062] The reaction container 31 is made of glass, and the reaction container cover 36 can be made of glass or polytetrafluoroethylene. After the reaction container is sealed, normal pressure or slightly negative pressure reaction can be achieved. The capacity of the conventional reaction container 31 is 200ml. When the reactor adapter 37 is used, the capacity of the reaction container 31 adapted thereto is 50ml, and the number is 4.

[0063] The parameter measurement subsystem 4 includes a temperature measurement unit 41, a turbidity measurement unit 42, a viscosity and pH measurement unit 43, and a flow field measurement system. The flow field measurement system includes a laser reflector 44, a laser generator 45, a plane imaging lens 46, and an axial cross-section imaging lens 47. The laser generator 45 and the turbidity measurement unit 42 are arranged close to the outer wall of the reaction container 31. The temperature measurement unit 41, the viscosity and pH measurement unit 43 are inserted into the reaction container 31 through the reserved adapter hole on the reaction container cover 36. The laser reflector 44 extends from the reaction container cover 36 into the interior of the reaction container 31 through a fixed bracket. The plane imaging lens 46 and the axial cross-section imaging lens 47 are arranged on the sliding guide rail 38 in the reactor shell 32. The viscosity and pH measurement unit 43 is composed of a vibration element 431 of a vibration viscometer and a pH meter 432. The vibration element 431 of the vibration viscometer is covered as a jacket on the outside of the pH meter 432, and the head of the pH meter 432 is exposed by 2-3 cm.

[0064] The vibration element 431 of the vibration viscometer adopts the commercially available HYZY-500 vibration element, the pH meter 432 adopts the commercially available BPH-200A pH meter, and the temperature sensor adopts the commercially available PT-1000 thermal resistor.

[0065] The data acquisition and control subsystem 5 includes a data acquisition module 51 and a computer 52. The data acquisition module 51 and the computer 52 are connected via a network data line. The input end and the output end of the data acquisition module 51 are respectively connected to the inhibitor release subsystem 1, the inhibitor mixing subsystem 2, the reaction vessel external temperature control unit 33, the reaction vessel internal temperature control unit 34, the reactor material dispersion device 35, and the sensor element in the parameter test system 4 via a signal line. The computer 52 is equipped with an existing dedicated experimental analysis software program, which comprehensively analyzes the temperature, turbidity, viscosity, pH and flow field changes during the reaction process and after the addition of the inhibitor to evaluate the reaction runaway inhibition and the inhibition effect.

[0066] In this preferred embodiment, a reactor adapter can be selected to load multiple reactors at the same time. When multiple reactors are loaded, the capacity of the reactants in a single reactor is relatively reduced, which reduces the risk of the reaction and increases the number of tests that can be performed simultaneously. This arrangement is conducive to speeding up testing efficiency.

[0067] There are cavities or elbows inside and outside the reactor for the flow of cooling or heating media. The cooling medium is water or other coolants, and the heating medium can be steam or hot fluid. According to the actual test requirements, internal cooling and external heating, internal heating and external cooling, or simultaneous heating inside and outside or simultaneous cooling inside and outside can be performed. The hot and cold fluids are regulated by solenoid valves on the pipelines controlled by computers.

[0068] The temperature measurement unit in the parameter measurement subsystem further includes a sensor array composed of multiple temperature sensors. The sensors are vertically distributed along the axial direction of the array and can measure the temperature at different positions inside the reaction system. For the situation where the temperature in the reactor is uneven under laminar flow conditions due to low stirring speed, the temperature distribution of the reaction system can be more comprehensively characterized.

[0069] The method for measuring using the above reaction runaway inhibitor inhibitor effect test system comprises the following steps:

[0070] 1) According to the test purpose, a certain amount of inhibitor is added to the inhibitor addition tank 14, and reactants are added to the reaction vessel 31. The inhibitor addition tank 14 is sealed;

[0071] 2) Arrange the hardware equipment according to the test requirements;

[0072] 2-1) Install suppressant release nozzle 23;

[0073] 2-2) Arrange the sensors of various monitoring parameters of the parameter measurement subsystem 4, and insert the sensors of the temperature measurement unit 41 and the viscosity and pH measurement unit 43 into the reaction container 31 through the reserved adapter holes on the reaction container cover 36;

[0074] 2-3) Extend the laser reflector 44 from the reaction vessel upper cover 36 into the reaction vessel 31 through the fixing bracket, arrange the laser generator 45 and the turbidity measurement unit 42 close to the outer wall of the reaction vessel 31, and adjust the positions of the plane imaging lens 46 and the axial section imaging lens 47 on the sliding guide rails in the reactor shell 32;

[0075] 2-4) Calibrate the sensor and set the reaction control parameters, including temperature control program, stirring speed, inhibitor release pressure, and opening time of the inhibitor release control valve 21;

[0076] 2-5) The reaction vessel cover 36 and the reaction vessel 31 are sealed with a quick-release clamp;

[0077] 3) Start the test;

[0078] 3-1) Start the reactor material dispersing device 35, the reaction vessel external temperature control unit 33 or the reaction vessel internal temperature control unit 34, and start recording parameter test system data;

[0079] 3-2) Before the preset inhibitor release time is reached, the high-pressure gas cylinder control valve 12 is opened, the inhibitor adding tank 14 is pressurized to a preset pressure value, and the high-pressure gas cylinder control valve 12 is closed;

[0080] 3-3) When the preset inhibitor release time is reached, the inhibitor release subsystem control valve 21 is opened to inject the inhibitor;

[0081] 4) When the reaction is terminated, stop recording data, stop stirring, and lower the reactor temperature to a safe temperature. After the experiment, the temperature data, turbidity data, pH data, viscosity data, and flow field image information of the reaction system are transmitted and recorded in the computer. The changes in temperature, turbidity, viscosity, pH, and flow field during the reaction and after the addition of the inhibitor are comprehensively analyzed to evaluate the reaction runaway inhibition and the inhibition effect.

[0082] The present invention has been described above, but the embodiments described in the present invention are not intended to be limiting. The present invention may be varied and modified in many ways without departing from the spirit of the present invention.

Claims

1. A reaction runaway inhibitor inhibitory effect test system, characterized in that: It includes a reactor subsystem, a parameter measurement subsystem, an inhibitor mixing subsystem, an inhibitor releasing subsystem and a data acquisition and control subsystem; the inhibitor mixing subsystem and the inhibitor releasing subsystem are connected through a high-pressure metal hose; the data acquisition and control subsystem is respectively connected to the inhibitor releasing subsystem, the inhibitor mixing subsystem, the reactor subsystem and the parameter measurement subsystem; The inhibitor mixing subsystem includes a high-pressure gas cylinder and an inhibitor adding tank, the high-pressure gas cylinder and the inhibitor adding tank are connected by a high-pressure metal hose, and a control valve is provided at the outlet of the high-pressure gas cylinder; The inhibitor release subsystem has an inhibitor release nozzle, which is connected to the bottom of the inhibitor addition tank through a high-pressure metal hose, and an inhibitor release control valve is provided at the connection end with the inhibitor addition tank, and the inhibitor release control valve is used to adjust and control the release of the inhibitor; The reactor subsystem comprises a reaction vessel, a reactor shell, an external temperature control unit of the reaction vessel, an internal temperature control unit of the reaction vessel, a reactor material dispersing device and a reaction vessel upper cover; the reaction vessel is placed in the reactor shell, and the reaction vessel upper cover is covered on the top of the reaction vessel and sealed with the reaction vessel; an adapter hole is reserved on the reaction vessel upper cover for inserting the reactor material dispersing device, the sensor of the parameter measurement subsystem, the internal temperature control unit of the reaction vessel and the inhibitor release nozzle; The parameter measurement subsystem includes a temperature measurement unit, a turbidity measurement unit, a viscosity and pH measurement unit and / or a flow field measurement unit; and can realize the collection of one or more combinations of parameters; The runaway reaction includes thermal runaway reaction; The flow field measurement unit includes a laser generator, a plane imaging lens and an axial cross-section imaging lens; the laser generator and the turbidity measurement unit are closely attached to the outer wall of the reaction container; the plane imaging lens and the axial cross-section imaging lens are respectively installed on the sliding guide rail in the reactor shell through a pulley seat and can slide along the sliding guide rail; The flow field measurement unit further comprises a laser reflector, and the laser reflector extends from the upper cover of the reaction container into the interior of the reaction container through a fixed bracket; The reactor shell adopts a reactor adapter, and the reaction container adopts a reactor; the reactor adapter can load multiple reactors at the same time.

2. The reaction runaway inhibitor inhibitory effect testing system according to claim 1, characterized in that: The temperature measuring unit and the viscosity and pH measuring unit are inserted into the reaction container through the reserved adapting holes on the upper cover of the reaction container; A sliding guide rail is provided in the reactor shell and surrounds the outer circumference of the reaction vessel; The data acquisition and control subsystem includes a data acquisition module, a control module and a computer; the data acquisition module and the computer are connected via a network data line; the input end and the output end of the data acquisition module are respectively connected to the inhibitor release subsystem, the inhibitor mixing subsystem, the reaction vessel external temperature control unit, the reaction vessel internal temperature control unit, the reactor material dispersion device and the sensor element in the parameter measurement subsystem via a signal line; the control module and the computer are connected via a network data line; the input end and the output end of the control module are respectively connected to the inhibitor release subsystem, the inhibitor mixing subsystem, the reaction vessel external temperature control unit, the reaction vessel internal temperature control unit, the reactor material dispersion device and the sensor element in the parameter measurement subsystem via a signal line.

3. The reaction runaway inhibitor inhibitory effect testing system according to claim 2, characterized in that: The deflection angle of the laser reflector is +45° or -45° from the vertical line, and the center of the laser reflector and the laser emitter are arranged in the same horizontal plane.

4. The reaction runaway inhibitor inhibitory effect testing system according to claim 2, characterized in that: There are cavities or elbows inside and outside the reactor for the flow of cooling or heating media. The cooling medium is water or other coolants, and the heating medium is steam or hot fluid. According to actual test requirements, internal cooling and external heating, internal heating and external cooling, simultaneous heating inside and outside, or simultaneous cooling inside and outside can be performed; the hot and cold fluids are regulated by solenoid valves on computer-controlled pipelines.

5. The reaction runaway inhibitor inhibitory effect testing system according to claim 2, characterized in that: The temperature measurement unit in the parameter measurement subsystem includes a sensor array composed of multiple temperature sensors. The sensors are distributed vertically along the axial direction of the array and can measure the temperature at different positions inside the reaction system. For the situation of uneven temperature in the reactor under laminar flow conditions caused by low stirring speed, it can more comprehensively characterize the temperature distribution of the reaction system.

6. The reaction runaway inhibitor inhibitory effect testing system according to claim 2, characterized in that: The reaction container adopts an embedded design and is installed in the reactor shell. The distance between the reactor outer wall and the reactor shell is no more than 0.5 mm.

7. The reaction runaway inhibitor inhibitory effect testing system according to claim 2, characterized in that: The viscosity and pH measurement unit is composed of a vibration element with a vibration viscometer and a pH meter. The vibration element is covered on the outside of the pH meter as a jacket, and the head of the pH meter is exposed 2-3 cm from the vibration element.

8. The test method of the reaction runaway inhibitor inhibitory effect test system according to claim 2, characterized in that: The steps include: 1) According to the test purpose, add a certain amount of inhibitor to the inhibitor addition tank, add reactants to the reaction vessel, and seal the inhibitor addition tank; 2) Arrange the hardware equipment according to the test requirements; 2-1) Install suppressant release nozzles; 2-2) Arrange the sensors of various monitoring parameters of the parameter measurement subsystem, and insert the sensors of the temperature measurement unit, viscosity and pH measurement unit into the reaction container through the reserved adapter holes on the upper cover of the reaction container; 2-3) Extend the laser reflector from the upper cover of the reaction vessel into the interior of the reaction vessel through the fixing bracket, arrange the laser generator and the turbidity measurement unit close to the outer wall of the reaction vessel, and adjust the positions of the plane imaging lens and the axial section imaging lens on the sliding guide rail in the reactor shell; 2-4) Calibrate the sensor and set the reaction control parameters, including temperature control program, stirring speed, inhibitor release pressure and inhibitor release control valve opening time; 2-5) Seal the reaction container cover and the reaction container; 3) Start the test; 3-1) Start the reactor material dispersing device, the reaction vessel external temperature control unit or the reaction vessel internal temperature control unit, and start recording parameter test system data; 3-2) Before the preset inhibitor release time is reached, the high-pressure gas cylinder control valve is opened, the inhibitor adding tank is pressurized to the preset pressure value, and the high-pressure gas cylinder control valve is closed; 3-3) When the preset inhibitor release time is reached, the inhibitor release subsystem control valve is opened to inject the inhibitor; 4) When the reaction is terminated, stop recording data, stop stirring, and lower the reactor temperature to a safe temperature; after the experiment, the temperature data, turbidity data, pH data, viscosity data, and flow field image information of the reaction system are transmitted through the data acquisition and control subsystem and recorded in the computer to obtain the reaction runaway inhibition and inhibition effect.

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