Sample size evaluation method, device and equipment for adiabatic heat safety test

Abstract

Embodiments of the present disclosure provide a sample amount evaluation method, device and equipment for adiabatic heat safety test. The method comprises: obtaining unit heat release amount, unit gas production amount of a sample for the adiabatic heat safety test, and saturated vapor pressure of decomposition products of the sample; calculating maximum evaluation sample amount of a simulation reaction kettle for the adiabatic heat safety test according to the unit heat release amount; judging whether the maximum evaluation sample amount needs to be adjusted according to the unit gas production amount, the saturated vapor pressure and the maximum allowable pressure of the simulation reaction kettle; and determining the final allowable sample amount of the simulation reaction kettle according to the judgment result. In this way, the suitable sample amount allowed to be put into the simulation reaction kettle when the adiabatic heat safety test is performed can be accurately and safely calculated.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the chemical industry field, in particular to the adiabatic thermal safety test field. BACKGROUND

[0002] In the chemical design process, in order to analyze the hazards of the process scene or design the relief system of the main equipment, it is often necessary to obtain relevant analysis and calculation data through an adiabatic thermal safety test experiment with large scale and high sample loading rate (i.e., the volume ratio of the volume of the material placed in the simulation reactor to the total volume of the simulation reactor, wherein the simulation reactor is a simulation device of the real reactor used in the chemical industry).

[0003] However, since the adiabatic thermal safety test can only obtain relevant data after the test material (sample) reaction is out of control, and the test process generally has the characteristics of high temperature and high pressure, if too much sample (material) is loaded into the simulation reactor during the test process, it may cause the simulation reactor to overheat, overpressure and rupture, causing personal injury and equipment damage; and if too little sample is loaded into the simulation reactor during the test process, it will cause the experimental thermal inertia factor to be too large, and the usability of the test data to be reduced, so it is necessary to gradually increase the sample loading rate and perform multiple experiments until ideal data is obtained, thus greatly increasing the experimental cost and greatly prolonging the experimental period.

[0004] Therefore, it is particularly important to load the appropriate amount of sample during the adiabatic thermal safety test, and how to safely determine the appropriate amount of sample becomes an urgent problem to be solved. SUMMARY

[0005] The present disclosure provides a sample amount evaluation method, device, equipment and storage medium for adiabatic thermal safety test.

[0006] According to a first aspect of the present disclosure, a sample amount evaluation method for adiabatic thermal safety test is provided.

[0007] The method comprises:

[0008] obtaining the unit heat release amount, the unit gas production amount of the sample for the adiabatic thermal safety test, and the saturated vapor pressure of the decomposition product of the sample;

[0009] calculating the maximum evaluation sample amount of the simulation reactor for the adiabatic thermal safety test according to the unit heat release amount;

[0010] judging whether the maximum evaluation sample amount needs to be adjusted according to the unit gas production amount, the saturated vapor pressure and the maximum allowable pressure of the simulation reactor;

[0011] determining the final allowable sample amount of the simulation reactor according to the judgment result.

[0012] According to the unit heat release, the maximum evaluation sample amount of the simulated reaction kettle for the adiabatic thermal safety test is calculated, including:

[0013] The mass of the simulated reaction kettle, the specific heat capacity of the simulated reaction kettle, the average specific heat capacity of the sample, the maximum allowable temperature of the simulated reaction kettle and the initial temperature of the simulated reaction kettle when entering the adiabatic mode for the adiabatic thermal safety test are obtained;

[0014] According to the mass of the simulated reaction kettle, the specific heat capacity of the simulated reaction kettle, the average specific heat capacity of the sample, the maximum allowable temperature of the simulated reaction kettle, the initial temperature and the unit heat release, the maximum evaluation sample amount is calculated.

[0015] According to the unit gas production amount, the saturated vapor pressure and the maximum allowable pressure of the simulated reaction kettle, whether the maximum evaluation sample amount needs to be adjusted is determined, including:

[0016] The volume of the simulated reaction kettle and the amount of back pressure gas required by the simulated reaction kettle are obtained;

[0017] According to the maximum evaluation sample amount, the unit gas production amount, the amount of back pressure gas, the maximum allowable temperature of the simulated reaction kettle and the volume of the simulated reaction kettle, and the saturated vapor pressure of the decomposition product at the maximum allowable temperature, the total pressure that the simulated reaction kettle needs to bear when performing the adiabatic thermal reaction test is calculated;

[0018] It is determined whether the total pressure is greater than the maximum allowable pressure;

[0019] If the total pressure is greater than the maximum allowable pressure, the maximum evaluation sample amount needs to be reduced;

[0020] If the total pressure is less than or equal to the maximum allowable pressure, the maximum evaluation sample amount does not need to be adjusted.

[0021] According to the determination result, the final allowable sample amount of the simulated reaction kettle is determined, including:

[0022] If the maximum evaluation sample amount needs to be reduced, the maximum evaluation sample amount is reduced by a preset reduction ratio to obtain the final allowable sample amount;

[0023] If the maximum evaluation sample amount does not need to be adjusted, the maximum evaluation sample amount is determined as the final allowable sample amount.

[0024] According to any possible implementation of the aspect as described above, further provides an implementation, wherein if the maximum allowable sample amount needs to be reduced, the maximum allowable sample amount is reduced by a preset reduction ratio to obtain the final allowable sample amount, including:

[0025] The maximum allowable sample amount is reduced by a preset reduction ratio to obtain a reduced sample amount;

[0026] According to the reduced sample amount, the highest test temperature that the simulated reactor can reach when performing the adiabatic heat reaction test is calculated;

[0027] According to the maximum allowable sample amount, the unit gas production amount, the amount of back pressure gas, the highest test temperature of the simulated reactor, the volume of the simulated reactor, and the saturated vapor pressure of the decomposition product at the highest test temperature, the total pressure that the simulated reactor needs to withstand when performing the adiabatic heat reaction test is recalculated;

[0028] It is judged whether the recalculated total pressure is greater than the maximum allowable pressure;

[0029] If it is greater, the above steps are repeated until the recalculated total pressure is not greater than the maximum allowable pressure, and the sample amount corresponding to the total pressure when it is not greater than the maximum allowable pressure is determined as the final allowable sample amount.

[0030] According to any possible implementation of the aspect as described above, further provides an implementation, wherein the unit heat release amount, the unit gas production amount of the sample of the adiabatic heat safety test, and the saturated vapor pressure of the decomposition product of the sample are obtained, including:

[0031] The total heat release amount of the sample after reaction in a first simulation experiment device is obtained;

[0032] According to the total heat release amount and the mass of the sample in the simulation experiment device, the unit heat release amount is calculated;

[0033] The absolute pressure rise of the sample after reaction in a second simulation experiment device in isothermal mode is obtained;

[0034] After the reaction is completed, the decomposition product of the sample is cooled to room temperature, vacuumized, and heated according to a preset fixed heating power to obtain the saturated vapor pressure of the decomposition product at different temperatures;

[0035] According to the absolute pressure rise, the saturated vapor pressure of the decomposition product at a preset test temperature, and the saturated vapor pressure of the sample at the test temperature, the unit gas production amount is calculated, wherein the test temperature is related to an initial temperature when the simulated reactor enters an adiabatic mode to perform the adiabatic thermal safety test.

[0036] According to the aspect and any possible implementation manner described above, further provided is an implementation manner, wherein the calculating the unit gas production amount according to the absolute pressure rise, the saturated vapor pressure of the decomposition product at a preset test temperature, and the saturated vapor pressure of the sample at the test temperature comprises:

[0037] calculating a vapor pressure difference between the saturated vapor pressure of the decomposition product at the preset test temperature and the saturated vapor pressure of the sample at the test temperature;

[0038] determining a pressure difference between the absolute pressure rise and the vapor pressure difference as a pressure rise caused by sample decomposition gas production;

[0039] calculating the unit gas production amount according to the pressure rise caused by sample decomposition gas production and an ideal gas state equation.

[0040] According to a second aspect of the present disclosure, a sample amount evaluation device for adiabatic thermal safety test is provided.

[0041] The device comprises:

[0042] an acquisition module configured to acquire a unit heat release amount, a unit gas production amount of a sample for adiabatic thermal safety test, and a saturated vapor pressure of a decomposition product of the sample;

[0043] a calculation module configured to calculate a maximum evaluation sample amount of a simulated reactor for the adiabatic thermal safety test according to the unit heat release amount;

[0044] a judgment module configured to judge whether the maximum evaluation sample amount needs to be adjusted according to the unit gas production amount, the saturated vapor pressure, and a maximum allowable pressure of the simulated reactor;

[0045] a determination module configured to determine a final allowable sample amount of the simulated reactor according to a judgment result.

[0046] According to a third aspect of the present disclosure, an electronic device is provided. The electronic device comprises a memory and a processor, the memory has a computer program stored thereon, and the processor implements the method described above when executing the program.

[0047] According to a fourth aspect of the present disclosure, a computer readable storage medium is provided, having stored thereon a computer program which, when executed by a processor, implements the method according to the first aspect of the present disclosure.

[0048] In the present disclosure, according to the unit heat release amount obtained through the simulation experiment device, the maximum evaluation sample amount of the simulation reactor for performing the adiabatic heat safety test can be accurately calculated, and according to the unit gas production amount, the saturated vapor pressure and the maximum allowable pressure of the simulation reactor, it can be further determined whether the maximum evaluation sample amount needs to be adjusted, and according to the determination result, the final allowable sample amount of the simulation reactor is determined. In this way, the appropriate sample amount allowed to be put into the simulation reactor during the adiabatic heat safety test can be accurately and safely calculated, which on the one hand can avoid putting too much sample into the simulation reactor, which may cause the simulation reactor to overheat and overpressure, resulting in personal injury and equipment damage, and on the other hand can also avoid putting too little sample into the simulation reactor, which may result in too large thermal inertia factor and reduce the usability of test data, and it is necessary to gradually increase the sample filling rate to perform multiple experiments until ideal data is obtained, thereby increasing the cost of adiabatic heat safety test and greatly prolonging the cycle of adiabatic heat safety test. It should be understood that the content described in the summary section is not intended to limit the key or important features of the embodiments of the present disclosure, nor to limit the scope of the present disclosure. Other features of the present disclosure will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0049] The above and other features, advantages, and aspects of embodiments of the present disclosure will become more apparent by describing in detail the following embodiments with reference to the attached drawings. The accompanying drawings are intended to better understand the present disclosure and do not limit the present disclosure.

[0050] In the drawings, the same or similar reference numerals refer to the same or similar elements, wherein:

[0051] Figure 1 A flowchart of a sample amount evaluation method for adiabatic heat safety test according to an embodiment of the present disclosure is shown;

[0052] Figure 2 A flowchart of another sample amount evaluation method for adiabatic heat safety test according to an embodiment of the present disclosure is shown;

[0053] Figure 3 Test results of a small-scale experiment A according to an embodiment of the present disclosure are shown;

[0054] Figure 4 The saturated vapor pressure curve of the decomposition product of allyl ester material;

[0055] Figure 5A block diagram of a sample quantity evaluation device for adiabatic heat safety testing is shown according to an embodiment of the present disclosure.

[0056] Figure 6 A block diagram of an exemplary electronic device capable of implementing an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0057] For the purposes of the present disclosure, the technical solutions and advantages of the embodiments will be more apparent from the following detailed description of the embodiments of the present disclosure, taken in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present disclosure.

[0058] In addition, the term "and / or" herein is merely a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0059] Figure 1 A flowchart of a sample quantity evaluation method for adiabatic heat safety testing according to an embodiment of the present disclosure is shown. The method 100 can include:

[0060] In step 110, the unit heat release, the unit gas production, and the saturated vapor pressure of the decomposition product of the sample for the adiabatic heat safety testing are obtained.

[0061] The adiabatic heat safety testing refers to the process of chemical reaction of a sample in a VSP2 (developed by Fauske & Associates, Lnc, USA) device, which is a device for simulating a reaction kettle used in chemical production processes. The chemical reaction process is carried out in an adiabatic mode, i.e., the temperature of the side wall of the reaction kettle always changes synchronously with the change of the material temperature during the reaction, so that the material does not exchange heat with the outside world.

[0062] The VSP2 device is a relief system, and therefore, the adiabatic heat safety testing is also called relief testing.

[0063] The VSP2 device is a simulated reaction kettle used in chemical production processes, and when the adiabatic heat safety testing is performed, the sample (also referred to as material) to be put in is generally not less than 10g, and therefore, the adiabatic heat safety testing is also called large-scale adiabatic heat safety testing.

[0064] Since the adiabatic thermal safety test in a simulated reactor is dangerous due to high temperature and high pressure, the unit heat release, the unit gas production and the saturated vapor pressure of the decomposition products of the sample for the adiabatic thermal safety test are obtained in a small-scale experiment in a simulated experimental device to ensure that the sample quantity in the adiabatic thermal safety test can be safely obtained. The small-scale experiment is of the same type as the large-scale adiabatic thermal safety test, and the products are the same, i.e., the chemical reaction formula of the chemical reaction process is the same, only the sample quantity is small, usually less than 5g, and the reaction conditions (i.e., the reaction temperature) can be different.

[0065] In step 120, the maximum evaluation sample quantity of the simulated reactor for the adiabatic thermal safety test is calculated according to the unit heat release.

[0066] The maximum evaluation sample quantity is the maximum sample quantity that the simulated reactor can accommodate without exceeding the maximum allowable pressure and the maximum allowable temperature that the simulated reactor can withstand when the adiabatic thermal safety test is performed.

[0067] In step 130, it is determined whether the maximum evaluation sample quantity needs to be adjusted according to the unit gas production, the saturated vapor pressure and the maximum allowable pressure of the simulated reactor.

[0068] In step 140, the final allowable sample quantity of the simulated reactor is determined according to the determination result.

[0069] The final allowable sample quantity is the maximum sample quantity that the simulated reactor can accommodate without exceeding the maximum allowable pressure and the maximum allowable temperature that the simulated reactor can withstand when the adiabatic thermal safety test is performed.

[0070] According to the unit heat release amount obtained through the simulation experimental device, the maximum evaluation sample amount of the simulation reaction kettle for performing the adiabatic heat safety test can be accurately calculated, and according to the unit gas production amount, the saturated vapor pressure and the maximum allowable pressure of the simulation reaction kettle, it can be further judged whether the maximum evaluation sample amount needs to be adjusted, and according to the judgment result, the final allowable sample amount of the simulation reaction kettle is determined, so that the appropriate sample amount allowed to be put into the simulation reaction kettle when performing the adiabatic heat safety test can be accurately and safely calculated, which can on the one hand avoid putting too much sample into the simulation reaction kettle, which may cause the simulation reaction kettle to overheat, overpressure and rupture, causing personnel injury and equipment damage, and on the other hand, it can also avoid putting too little sample into the simulation reaction kettle, which leads to too large experimental thermal inertia factor and reduces the usability of test data (i.e. if the sample loading amount is too small, most of the heat released by the sample after reaction is used to heat the test container, which leads to that the experimental thermal effect is not obvious, and the danger of material out of control cannot be effectively reflected, thereby reducing the usability of test data), which needs to gradually increase the sample loading rate to perform multiple experiments until ideal data is obtained, thereby increasing the cost of adiabatic heat safety test experiment and prolonging the period of adiabatic heat safety test experiment.

[0071] The meaning of the thermal inertia factor is: the ratio of the total heat released by the material to the part of the heat used to heat the material itself. The smaller the thermal inertia factor, the greater the proportion of the heat released by the material used to heat itself, and the more it can simulate the real danger of material out of control.

[0072] Thermal inertia factor = (sample mass x average specific heat capacity of sample + mass of simulation reaction kettle x specific heat capacity of simulation reaction kettle) ÷ (sample mass x average specific heat capacity of sample).

[0073] In some embodiments, the calculation of the maximum evaluation sample amount of the simulation reaction kettle for performing the adiabatic heat safety test according to the unit heat release amount comprises:

[0074] obtaining the mass of the simulation reaction kettle, the specific heat capacity of the simulation reaction kettle, the average specific heat capacity of the sample, the maximum allowable temperature of the simulation reaction kettle and the initial temperature of the simulation reaction kettle when entering the adiabatic mode for performing the adiabatic heat safety test;

[0075] calculating the maximum evaluation sample amount m according to the mass of the simulation reaction kettle, the specific heat capacity of the simulation reaction kettle, the average specific heat capacity of the sample, the maximum allowable temperature of the simulation reaction kettle, the initial temperature and the unit heat release amount. Tmax .

[0076] The product of the specific heat capacity and the mass, i.e. the heat capacity, in the adiabatic thermal safety test in the simulation reactor, without considering whether the overpressure condition, the heat released by the sample in the chemical reaction process can just heat the material and the side wall of the simulation reactor to the maximum allowable temperature, therefore, according to the above parameters and the principle, the maximum evaluation sample amount m Tmax , of course, after considering whether the overpressure condition, the maximum evaluation sample amount m Tmax may need to be reduced.

[0077] The maximum evaluation sample amount m Tmax is calculated according to the following formula:

[0078]

[0079] Wherein, m cell is the mass of the simulation reactor, Cp cell is the specific heat capacity of the simulation reactor, Cp is the average specific heat capacity of the sample (i.e. the sample may be a mixture, and the average specific heat capacity is the average of the specific heat capacities of all components contained in the sample), T cellmax is the maximum allowable temperature of the simulation reactor, T0 is the initial temperature (the temperature fed back by the first simulation experiment device), and q is the unit heat release amount.

[0080] In some embodiments, according to the unit gas production amount, the saturated vapor pressure and the maximum allowable pressure of the simulation reactor, it is judged whether the maximum evaluation sample amount needs to be adjusted, comprising:

[0081] Obtaining the volume of the simulation reactor and the amount of back pressure gas required by the simulation reactor;

[0082] The back pressure gas refers to the gas that does not react with the material or sample in the simulation reactor due to the need to reach a certain pressure, safety and various factors such as security during the experiment, such as nitrogen, argon, carbon dioxide and other gases that do not react with the material in the simulation reactor.

[0083] The amount of back pressure gas can be the molar amount.

[0084] According to the maximum evaluation sample amount, the unit gas production amount, the amount of back pressure gas, the maximum allowable temperature of the simulation reactor and the volume of the simulation reactor, and the saturated vapor pressure of the decomposition product at the maximum allowable temperature, the total pressure that the simulation reactor needs to withstand when performing the adiabatic thermal reaction test is calculated;

[0085] Wherein,

[0086] m Tmaxis the maximum allowable sample amount, n is the unit gas production amount, N is the amount of back pressure gas, T is the maximum allowable temperature of the simulation reactor cellmax is the maximum allowable temperature of the simulation reactor, V call is the volume of the simulation reactor, and is the saturated vapor pressure of the decomposition product at the maximum allowable temperature, and R is the molar gas constant.

[0087] The total pressure that the simulation reactor needs to withstand when the adiabatic heat reaction test is performed is partly from the non-condensable gas generated during the reaction of the sample and partly from the liquid decomposition product, and thus, is the pressure of the non-condensable gas, is the saturated vapor pressure of the liquid decomposition product at the maximum allowable temperature.

[0088] It is determined whether the total pressure is greater than the maximum allowable pressure;

[0089] If the total pressure is greater than the maximum allowable pressure, the maximum allowable sample amount needs to be reduced;

[0090] If the total pressure is less than or equal to the maximum allowable pressure, the maximum allowable sample amount does not need to be adjusted.

[0091] The total pressure that the simulation reactor needs to withstand when the adiabatic heat reaction test is performed can be calculated by the above parameters, and then the total pressure and the maximum allowable pressure are compared in size to determine whether the maximum allowable sample amount needs to be adjusted. If the total pressure is greater than the maximum allowable pressure, it means that the maximum allowable sample amount is too large, resulting in too much gas and thus too large total pressure. Therefore, the maximum allowable sample amount needs to be reduced to avoid too much sample amount in the simulation reactor, which may cause the simulation reactor to overheat, overpressure and rupture, causing personal injury and equipment damage. If the total pressure is less than or equal to the maximum allowable pressure, it means that the maximum allowable sample amount is appropriate and does not result in too much gas and thus too large total pressure. Therefore, the maximum allowable sample amount does not need to be adjusted to avoid too little sample amount in the simulation reactor, which results in a large experimental heat inertia factor and reduces the usability of test data. It is necessary to gradually increase the sample loading rate to perform multiple experiments until ideal data is obtained, thereby increasing the cost of adiabatic heat safety test experiments and prolonging the adiabatic heat safety test experiment period.

[0092] In some embodiments, the final allowable sample amount of the simulation reactor is determined according to the determination result, including:

[0093] If the maximum allowable sample amount needs to be reduced, the maximum allowable sample amount is reduced by a preset reduction ratio to obtain the final allowable sample amount;

[0094] The preset reduction ratio can be determined according to the required accuracy of the final allowable sample amount. For example, if the accuracy requirement is 98% or above, the preset reduction ratio can be 0.5%-1%; if the accuracy requirement is 90%-95%, the preset reduction ratio can be 2%-3%.

[0095] If the maximum evaluation sample amount does not need to be adjusted, the maximum evaluation sample amount is determined as the final allowable sample amount.

[0096] If the maximum evaluation sample amount needs to be reduced, the maximum evaluation sample amount is gradually reduced according to a preset reduction ratio to obtain the final allowable sample amount in order to avoid excessive reduction; if the maximum evaluation sample amount does not need to be adjusted, the maximum evaluation sample amount is directly determined as the final allowable sample amount.

[0097] In some embodiments, if the maximum evaluation sample amount needs to be reduced, the maximum evaluation sample amount is reduced according to a preset reduction ratio to obtain the final allowable sample amount, including:

[0098] The maximum evaluation sample amount is reduced according to a preset reduction ratio to obtain a reduced sample amount.

[0099] According to the reduced sample amount, the highest test temperature that can be reached by the simulated reaction kettle during the adiabatic heat reaction test is calculated.

[0100] According to the maximum evaluation sample amount, the unit gas production amount, the amount of back pressure gas, the highest test temperature of the simulated reaction kettle, the volume of the simulated reaction kettle, and the saturated vapor pressure of the decomposition product at the highest test temperature, the total pressure that needs to be borne by the simulated reaction kettle during the adiabatic heat reaction test is recalculated.

[0101] It is determined whether the recalculated total pressure is greater than the maximum allowable pressure.

[0102] If it is greater, the above steps are repeated until the recalculated total pressure is not greater than the maximum allowable pressure, and the sample amount corresponding to the total pressure that is not greater than the maximum allowable pressure is determined as the final allowable sample amount. The sample amount corresponding to the total pressure that is not greater than the maximum allowable pressure refers to the maximum sample evaluation amount that produces the total pressure that is not greater than the maximum allowable pressure.

[0103] After the maximum sample amount is reduced according to the preset reduction ratio, a reduced sample amount is obtained, and then the maximum test temperature that can be reached by the adiabatic heat reaction test of the simulated reactor is recalculated according to the reduced sample amount, and the total pressure is recalculated based on the maximum test temperature and other parameters to determine whether the recalculated total pressure is greater than the maximum allowable pressure. If it is greater, the above steps are repeated to continue reducing the sample amount until the total pressure when it is not greater than the maximum allowable pressure is determined as the final allowable sample amount. In this way, the sample amount can be avoided to be too large, which may cause the simulated reactor to overheat, overpressure and rupture, causing personal injury and equipment damage.

[0104] In some embodiments, the unit heat release, the unit gas production, and the saturated vapor pressure of the decomposition products of the sample for the adiabatic heat safety test are obtained by:

[0105] Obtaining the total heat release of the sample after reaction in the first simulation experimental device;

[0106] Calculating the unit heat release according to the total heat release and the sample mass in the simulation experimental device;

[0107] Unit heat release = ratio of total heat release and sample mass in simulation experimental device.

[0108] Obtaining the absolute pressure rise of the sample after reaction in the second simulation experimental device in isothermal mode;

[0109] The absolute pressure rise refers to the difference between the pressure in the second simulation experimental device at the end of the reaction and the pressure in the second simulation experimental device at the beginning of the reaction (i.e., the pressure in the second simulation experimental device when the sample and back pressure gas are added).

[0110] The first simulation experimental device and the second simulation experimental device have the same chemical reaction as the simulated reactor, and the sample and the product are also the same, but the sample amount of the first simulation experimental device and the second simulation experimental device is very small, so it can be called small-scale experiment, and the sample amount is generally less than 5g. The simulated reactor is a device that can directly simulate the chemical production process, that is, a simulated device of the real reactor used in chemical industry, and the sample amount is very large, so it can be called large-scale experiment, and the sample amount is generally greater than 10g.

[0111] The first simulation experimental device includes but is not limited to DSC and other calorimetric devices with a sample loading amount of milligrams, and the small-scale experiment performed thereby can be called experiment A. The second simulation experimental device includes but is not limited to ARC, Phi-Tec, etc., and the small-scale experiment performed thereby can be called experiment B.

[0112] Experiment B is in isothermal mode, i.e. the temperature of the material in the second simulation experimental device remains unchanged during the chemical reaction process, and experiment A is not limited to isothermal or adiabatic mode.

[0113] Test temperature T of experiment B B The initial exothermic temperature Tonset of the sample obtained in comparable experiment A is 0-50 K / °C higher than the initial temperature.

[0114] Adiabatic mode refers to the reaction process in which the temperature of the outer wall of the device is kept synchronous with the change of the temperature of the material by external heating (such as a jacket), so that the material does not exchange heat with the outside world.

[0115] After the reaction is completed, the decomposition product of the sample is cooled to room temperature, vacuumized, and heated at a preset fixed heating power to obtain the saturated vapor pressure of the decomposition product at different temperatures.

[0116] The selection basis of the preset fixed heating power is to ensure that the temperature rise rate of the decomposition product is 0.1-2 K / min.

[0117] Reaction completion refers to the pressure in the second simulation experimental device no longer changes or changes less than a threshold value.

[0118] According to the absolute pressure rise, the saturated vapor pressure of the decomposition product at a preset test temperature, and the saturated vapor pressure of the sample at the test temperature, the unit gas production is calculated, wherein the test temperature is related to the initial temperature when the simulation reactor enters the adiabatic mode to perform the adiabatic thermal safety test. The test temperature can be equal to the initial temperature, or it can not be equal, as long as the difference is within a preset temperature range.

[0119] According to the absolute pressure rise, the saturated vapor pressure of the decomposition product at a preset test temperature, and the saturated vapor pressure of the sample at the test temperature, the unit gas production can be accurately calculated.

[0120] In some embodiments, the unit gas production is calculated according to the absolute pressure rise, the saturated vapor pressure of the decomposition product at a preset test temperature, and the saturated vapor pressure of the sample at the test temperature, comprising:

[0121] Calculate the vapor pressure difference between the saturated vapor pressure of the decomposition product at the preset test temperature and the saturated vapor pressure of the sample at the test temperature;

[0122] The pressure difference between the absolute pressure rise and the vapor pressure difference is determined as the pressure rise caused by the decomposition of the sample gas;

[0123] Since the absolute pressure rise is caused by the change of material species and the generation of non-condensable gas in the chemical reaction process, and the above vapor pressure difference is the pressure caused by the change of material species, the pressure difference between the absolute pressure rise and the vapor pressure difference is the pressure caused by the generation of non-condensable gas, i.e. the pressure rise caused by the sample decomposition gas generation.

[0124] According to the pressure rise caused by the sample decomposition gas generation and the ideal gas state equation, the unit gas generation amount is calculated.

[0125] The ideal gas state equation is PV = nRT, P is the pressure (Pa), V is the gas volume (m 3 ), T is the temperature (K), n is the amount of substance of the gas (mol), and R is the molar gas constant, since the volume V of the second simulation experimental device is known, R and the test temperature T B are known, thus, after substituting the above equation, the unit gas generation amount n can be accurately calculated.

[0126] The method of the present disclosure will be further described below Figure 2 :

[0127] The heat release q per unit mass of the experimental sample (unit mass of the mixed sample), the gas generation molar amount n, and the saturation vapor pressure data of the sample decomposition product changing with temperature are obtained by a small-scale experiment.

[0128] Further, the small-scale experimental equipment used in the small-scale experiment A for obtaining the heat release q per unit mass of the experimental sample includes but is not limited to a calorimeter such as a DSC (Differential Scanning Calorimeter) with a sample loading capacity in the milligram level, and through the experiment A, the initial heat release temperature Tonset of the sample and the total heat release Q of the sample can be obtained, and the heat release q per unit mass of the experimental sample is equal to the ratio of the total heat release Q measured by the small-scale experiment A to the sample mass m used in the small-scale experiment A.

[0129] Further, the small-scale experimental equipment used in the small-scale experiment B for obtaining the gas generation molar amount n includes but is not limited to an ARC (Accelerating Rate Calorimeter), Phi-Tec, etc., and the small-scale experiment B is performed in an "isothermal mode".

[0130] Further, the test temperature T B of the experiment B is higher than the initial heat release temperature Tonset obtained by the experiment A by 0-50 K, and through the experiment B, the absolute pressure rise ΔP of the sample after experiencing the experiment B is obtained.

[0131] Further, small-scale experiment C for obtaining the saturated vapor pressure data of the sample decomposition products is to vacuumize the sample after it is cooled to room temperature after experiment B, and then to perform the experiment on the sample after experiment B in the "constant heating power" mode with the temperature rising rate of 0.1-2K on the equipment used in experiment B, so as to obtain the saturated vapor pressure data of the sample decomposition products at different temperatures

[0132] Further, the absolute pressure rise ΔP is subtracted from the test temperature T of experiment B B The difference between the saturated vapor pressure of the sample decomposition products and the saturated vapor pressure of the sample is the pressure rise ΔP caused by the sample decomposition gas during experiment B gas According to the pressure rise ΔP caused by the sample decomposition gas during experiment B gas and the sample mass m used in experiment B B The molar amount n of the gas produced by the unit mass of the experimental sample can be obtained by using the ideal gas state equation.

[0133] Further, after obtaining the heat release q of the unit mass of the experimental sample, the molar amount n of the gas produced, and the saturated vapor pressure data of the sample decomposition products, the sample loading amount of the large-scale adiabatic thermal safety test experiment is calculated according to the following steps:

[0134] Step 1: Calculate the maximum sample loading amount m of the large-scale adiabatic thermal safety test experiment limited by the equipment temperature Tmax

[0135]

[0136] Step 2: Determine whether there is an overpressure risk in the large-scale adiabatic thermal safety test experiment when the sample loading amount is m Tmax

[0137] If:

[0138] The calculation is completed, and the maximum sample loading amount of the large-scale adiabatic thermal safety test experiment is m Tmax ;

[0139] If: Step 3 is performed;

[0140] Step 3: The value of m Tmax obtained in step 1 is reduced by 0.5%-1% to obtain the value m max , and the highest test temperature T max corresponding to the sample loading amount m max of the large-scale test experiment is calculated

[0141]

[0142] ​And determine the sample volume as the m max whether there is an overpressure risk in the large-scale adiabatic thermal safety test

[0143] If: Continue to reduce m by 0.5% to 1% max to get a new value m max , and repeat step 3 until m max value is reduced to the first time , the latest value of m max is the maximum sample volume of the large-scale adiabatic thermal safety test.

[0144] In the above formula, m cell , Cp cell , V cell are the mass, specific heat capacity and empty volume of the large-scale adiabatic thermal safety test container (simulated reactor) respectively;

[0145] T cell,ax , P max are the maximum allowable test temperature (maximum allowable temperature) and the maximum allowable test pressure (maximum allowable pressure) of the large-scale adiabatic thermal safety test container respectively;

[0146] T0 is the temperature when the large-scale adiabatic thermal safety test enters the adiabatic mode (i.e. initial temperature);

[0147] Cp is the average specific heat capacity of the large-scale adiabatic thermal safety test sample;

[0148] N is the molar amount of the large-scale adiabatic thermal safety test back pressure gas.

[0149] In the following, Figure 3 and Figure 4 , taking the 170℃ adiabatic tracking experiment of allyl ester material pure product in VSP2 as an example, the experimental sample volume (i.e. the final allowable sample volume) of allyl ester material pure product in VSP2 is determined when the 170℃ adiabatic tracking experiment is performed.

[0150] Small-scale experiment A:

[0151] Take 2.25mg of allyl ester material pure product for DSC test, and perform small-scale experiment A under nitrogen atmosphere in gold-plated crucible in programmed temperature mode.

[0152] The test results of small-scale experiment A are shown in Figure 3 , the Tonset of allyl ester material pure product under small-scale experiment A is 167℃, and the total heat release of the sample is 1514.7mJ. The calculated heat release per unit mass of allyl ester material pure product is 673.2J / g.

[0153] Small-scale experiment B:

[0154] Take 1.13 g of allyl ester material pure product for ARC test, the total volume of the test ball is 12 ml, the density of the allyl ester material at 200℃ is 0.685 g / ml, and the test is a small-scale experiment B of the allyl ester material pure product under vacuum conditions, which is rapidly heated to 200℃ and then isothermally heated at 200℃.

[0155] The test result of small-scale experiment B is that when the temperature rises to 200℃, the saturated vapor pressure of the allyl ester material is 9.52 bar, and the final test ball pressure stabilizes at 23.21 barA. It is calculated that the measured pressure rise of small-scale experiment B is 13.69 bar.

[0156] Small-scale experiment C:

[0157] After the test of small-scale experiment B, the test ball is cooled to room temperature and depressurized and vacuumized. Then the tested sample is continuously scanned by ARC in the "constant heating power" mode with a temperature rise rate of 1K. The saturated vapor pressure data of the decomposition products of the allyl ester material are as shown in Figure 4

[0158] According to the saturated vapor pressure data of the decomposition products of the allyl ester material, the saturated vapor pressure of the decomposition products of the allyl ester material at 200℃ is 11.92 bar. Combined with the experimental results of small-scale experiment B, the pressure rise ΔPgas caused by the sample decomposition gas in small-scale experiment B is 13.69–(11.92–9.52) = 11.29 bar.

[0159] The gas phase volume of small-scale experiment B is 12 ml–1.13 g / 0.685 g / ml = 10.35 ml, and according to the ideal state equation, the total amount of gas generated in small-scale experiment B is 0.00297 mol, so the gas generation amount per unit mass of the allyl ester material pure product is 0.00263 mol / g.

[0160] Step 1: Calculate the maximum sample loading m limited by the temperature of the equipment for the thermal safety test experiment by VSP2 Tmax

[0161] The mass of the VSP2 test cell is 43.27 g, the specific heat capacity is 0.42 J / g / K, the volume is 101.3 ml, the test cell allows the maximum test temperature to be 450℃, the VSP2 allows the maximum test pressure to be 131 barA, the specific heat capacity of the test sample is 2 J / g / K, the sample density at room temperature is 0.928 g / ml, and there is no test back pressure.

[0162]

[0163] Step 2: Determine whether there is an overpressure risk in the large-scale adiabatic thermal safety test experiment when the sample loading is 44.95 g​

[0164] If:

[0165]

[0166] Step 3: m is reduced by 1% to obtain a new value m Tmax The value of m is reduced by 1% to obtain a value m max = 44.50 g. The highest test temperature T ,ax ,

[0167]

[0168] Determine whether the VSP2 experiment has an overpressure risk when the sample loading amount is 44.50 g:

[0169]

[0170] Continue to reduce the value of m max by 1% to obtain a new value m max , and repeat step 3. The results are shown in Table 1. When the sample mass is 35.32 g, the maximum experimental temperature is 437.72℃, and the maximum experimental pressure is 130.39 barA < 131 barA.

[0171] The maximum experimental sample loading amount (i.e., the final allowable sample amount) of the allyl ester material in the VSP2 at 170℃ adiabatic tracking is 35.32 g.

[0172] Table 1

[0173]

[0174]

[0175]

[0176]

[0177] It should be noted that, for the foregoing method embodiments, in order to simply describe, they are all expressed as a series of action combinations, but those skilled in the art should know that the present disclosure is not limited by the order of the described actions, because according to the present disclosure, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily necessary for the present disclosure.

[0178] The above is an introduction to the method embodiments, and the following device embodiments further illustrate the scheme of the present disclosure.

[0179] Figure 5 A block diagram of a sample quantity evaluation device 500 for adiabatic heat safety testing according to embodiments of the present disclosure is shown. As shown, the device 500 includes: Figure 5

[0180] An obtaining module 510 is configured to obtain unit heat release, unit gas production, and saturated vapor pressure of decomposition products of a sample for the adiabatic heat safety testing;

[0181] A calculating module 520 is configured to calculate a maximum evaluation sample quantity of a simulated reaction kettle for the adiabatic heat safety testing according to the unit heat release;

[0182] A judging module 530 is configured to judge whether the maximum evaluation sample quantity needs to be adjusted according to the unit gas production, the saturated vapor pressure, and a maximum allowable pressure of the simulated reaction kettle;

[0183] A determining module 540 is configured to determine a final allowable sample quantity of the simulated reaction kettle according to a judgment result.

[0184] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the described modules can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0185] According to embodiments of the present disclosure, the present disclosure also provides an electronic device and a non-transitory computer-readable storage medium having computer instructions stored therein.

[0186] Figure 6 A schematic block diagram of an electronic device 600 that can be used to implement embodiments of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptops, desktops, tablets, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital assistants, cellular telephones, smartphones, wearable devices, and other similar computing devices. The components shown here, their connections and relationships, and their functions, are meant to be examples only, and are not intended to limit the implementations of the present disclosure described and / or claimed in this document.

[0187] ​The device 600 includes a computing unit 601 that can perform various appropriate actions and processes in accordance with a computer program stored in a read-only memory (ROM) 602 or a computer program loaded from a storage unit 608 into a random access memory (RAM) 603. In the RAM 603, various programs and data required for the operation of the device 600 can also be stored. The computing unit 601, the ROM 602, and the RAM 603 are connected to each other through a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0188] A plurality of components in the device 600 are connected to the I / O interface 605, including an input unit 606 such as a keyboard, a mouse, and the like, an output unit 607 such as various types of displays, speakers, and the like, a storage unit 608 such as a magnetic disk, a magneto-optical disk, and the like, and a communication unit 609 such as a network card, a modem, a wireless communication transceiver, and the like. The communication unit 609 allows the device 600 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0189] The computing unit 601 can be various general and / or special purpose processing components having processing and computing capabilities. Some examples of the computing unit 601 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, and the like. The computing unit 601 performs various methods and processes described above, such as the method 100. For example, in some embodiments, the method 100 can be implemented as a computer software program tangibly embodied in a machine-readable medium, such as the storage unit 608. In some embodiments, part or all of the computer program can be loaded and / or installed on the device 600 via the ROM 602 and / or the communication unit 609. When the computer program is loaded into the RAM 603 and executed by the computing unit 601, one or more steps of the method 100 described above can be performed. Alternatively, in other embodiments, the computing unit 601 can be configured to perform the method 100 by any other appropriate means, such as by means of firmware.

[0190] The various embodiments of the systems and techniques described above can be implemented in digital electronic circuitry, integrated circuitry, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on a chip (SOC), a load programmable logic device (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0191] Program code for carrying out methods of the present disclosure can be written in any combination of one or more programming languages. The program code can be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the program code, when executed by the processor or controller, produces the functions / operations specified in the flowcharts and / or the block diagrams. The program code can be executed entirely on a machine, partially on a machine, partially on a machine as a stand-alone software package, partially on a machine and partially on a remote machine or entirely on a remote machine or server.

[0192] In the context of the present disclosure, a machine-readable medium can be a tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can include but is not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the machine-readable storage medium will include one or more lines of electrical conductors, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0193] To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the computer. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0194] The systems and techniques described here can be implemented in a computing system that includes a back end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front end component (e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), and the Internet.

[0195] The computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, a server of a distributed system, or a server combined with a blockchain.

[0196] It should be understood that various forms of flow shown above can be used, with steps reordered, added, or removed. For example, steps recited in the present disclosure can be performed in parallel, in series, or in a different order, without limitation herein, so long as the desired results of the technology of the present disclosure are achieved.

[0197] The specific embodiments described above are not intended to be limiting, and persons skilled in the art will appreciate that various modifications, combinations, sub-combinations and alternatives can be made to the specific embodiments without departing from the spirit and principles of the disclosure. Accordingly, the disclosure is not limited to the specific embodiments described above.

Claims

1. A method for evaluating sample quantity in thermal insulation safety testing, characterized in that, include: Obtain the unit heat release, unit gas production, and saturated vapor pressure of the decomposition products of the sample for the thermal safety test. Based on the unit heat release, calculate the maximum evaluation sample size of the simulated reactor for the adiabatic thermal safety test. Based on the unit gas production rate, the saturated vapor pressure, and the maximum allowable pressure of the simulated reactor, determine whether the maximum evaluation sample quantity needs to be adjusted; Based on the judgment results, the final allowable sample quantity of the simulated reaction vessel is determined; The calculation of the maximum evaluation sample size of the simulated reactor for the adiabatic thermal safety test based on the unit heat release includes: The mass of the simulated reactor, the specific heat capacity of the simulated reactor, the average specific heat capacity of the sample, the maximum allowable temperature of the simulated reactor, and the initial temperature of the simulated reactor when it enters the adiabatic mode for the adiabatic thermal safety test are obtained. The maximum sample quantity for evaluation is calculated based on the mass of the simulated reactor, the specific heat capacity of the simulated reactor, the average specific heat capacity of the sample, the maximum allowable temperature of the simulated reactor, the initial temperature, and the unit heat release. Based on the unit gas production rate, the saturated vapor pressure, and the maximum allowable pressure of the simulated reactor, determine whether the maximum evaluation sample quantity needs adjustment, including: Obtain the volume of the simulated reactor and the amount of back pressure gas required by the simulated reactor; Based on the maximum sample quantity for evaluation, the unit gas production rate, the amount of back pressure gas, the maximum allowable temperature of the simulated reactor, the volume of the simulated reactor, and the saturated vapor pressure of the decomposition products at the maximum allowable temperature, calculate the total pressure that the simulated reactor must withstand during the adiabatic thermal reaction test. Determine whether the total pressure is greater than the maximum allowable pressure; If the total pressure is greater than the maximum allowable pressure, the maximum sample size for evaluation needs to be reduced. If the total pressure is less than or equal to the maximum allowable pressure, then there is no need to adjust the maximum evaluation sample volume.

2. The method according to claim 1, characterized in that, The step of determining the final allowable sample quantity of the simulated reactor based on the judgment result includes: If it is necessary to reduce the maximum evaluation sample size, the maximum evaluation sample size shall be reduced according to the preset reduction ratio to obtain the final allowable sample size; If no adjustment is needed to the maximum evaluation sample size, then the maximum evaluation sample size is determined as the final allowable sample size.

3. The method according to claim 2, characterized in that, If it is necessary to reduce the maximum evaluation sample size, the maximum evaluation sample size shall be reduced according to a preset reduction ratio to obtain the final allowable sample size, including: The maximum evaluation sample size is reduced according to a preset reduction ratio to obtain a reduced sample size. Based on the reduced sample volume, calculate the highest test temperature that the simulated reactor can reach when performing the adiabatic thermal reaction test. Based on the maximum sample quantity for evaluation, the unit gas production, the amount of back pressure gas, the highest test temperature of the simulated reactor, the volume of the simulated reactor, and the saturated vapor pressure of the decomposition products at the highest test temperature, the total pressure that the simulated reactor must withstand during the adiabatic thermal reaction test is recalculated. Determine whether the recalculated total pressure is greater than the maximum allowable pressure; If it is greater than the maximum allowable pressure, repeat the above steps until the recalculated total pressure is not greater than the maximum allowable pressure. Then, determine the sample quantity corresponding to the total pressure when it is not greater than the maximum allowable pressure as the final allowable sample quantity.

4. The method according to any one of claims 1 to 3, characterized in that, The process of obtaining the unit heat release, unit gas production, and saturated vapor pressure of the decomposition products of the sample for the adiabatic thermal safety test includes: Obtain the total heat release after the sample reaction in the first simulation experimental apparatus; The heat release per unit is calculated based on the total heat release and the sample mass in the simulated experimental apparatus; Obtain the absolute pressure rise of the sample after reaction in the second simulation experimental apparatus under isothermal mode; After the reaction is complete, the decomposition products of the sample are cooled to room temperature and then evacuated. The decomposition products are then heated according to a preset fixed heating power to obtain the saturated vapor pressure of the decomposition products at different temperatures. The unit gas production is calculated based on the absolute pressure rise, the saturated vapor pressure of the decomposition products at the preset test temperature, and the saturated vapor pressure of the sample at the test temperature, wherein the test temperature is related to the initial temperature when the simulated reactor enters the adiabatic mode for the adiabatic thermal safety test.

5. The method according to claim 4, characterized in that, The step of calculating the unit gas production based on the absolute pressure rise, the saturated vapor pressure of the decomposition products at a preset test temperature, and the saturated vapor pressure of the sample at the test temperature includes: Calculate the vapor pressure difference between the saturated vapor pressure of the decomposition product at the preset test temperature and the saturated vapor pressure of the sample at the test temperature; The pressure difference between the absolute pressure rise and the vapor pressure difference is defined as the pressure rise caused by the gas produced by the decomposition of the sample; The unit gas production rate is calculated based on the pressure rise caused by the gas production from the sample decomposition and the ideal gas law.

6. A sample quantity assessment device for thermal insulation safety testing, characterized in that, include: The acquisition module is used to acquire the unit heat release, unit gas production, and saturated vapor pressure of the decomposition products of the sample in the thermal safety test. The calculation module is used to calculate the maximum evaluation sample size of the simulated reactor for the adiabatic thermal safety test based on the unit heat release. The judgment module is used to determine whether the maximum evaluation sample quantity needs to be adjusted based on the unit gas production, the saturated vapor pressure, and the maximum allowable pressure of the simulated reactor. The determination module is used to determine the final allowable sample quantity of the simulated reactor based on the judgment result; The calculation module is specifically used for: The mass of the simulated reactor, the specific heat capacity of the simulated reactor, the average specific heat capacity of the sample, the maximum allowable temperature of the simulated reactor, and the initial temperature of the simulated reactor when it enters the adiabatic mode for the adiabatic thermal safety test are obtained. The maximum sample quantity for evaluation is calculated based on the mass of the simulated reactor, the specific heat capacity of the simulated reactor, the average specific heat capacity of the sample, the maximum allowable temperature of the simulated reactor, the initial temperature, and the unit heat release. The judgment module is specifically used for: Obtain the volume of the simulated reactor and the amount of back pressure gas required by the simulated reactor; Based on the maximum sample quantity for evaluation, the unit gas production rate, the amount of back pressure gas, the maximum allowable temperature of the simulated reactor, the volume of the simulated reactor, and the saturated vapor pressure of the decomposition products at the maximum allowable temperature, calculate the total pressure that the simulated reactor must withstand during the adiabatic thermal reaction test. Determine whether the total pressure is greater than the maximum allowable pressure; If the total pressure is greater than the maximum allowable pressure, the maximum sample size for evaluation needs to be reduced. If the total pressure is less than or equal to the maximum allowable pressure, then there is no need to adjust the maximum evaluation sample volume.

7. An electronic device, characterized in that, include: At least one processor; as well as A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-5.

8. A non-transitory computer-readable storage medium storing computer instructions, characterized in that, The computer instructions are used to cause the computer to perform the method according to any one of claims 1-5.

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