A safety monitoring method for synthesis of diethyl phenylethylmalonate based on reactive distillation

Abstract

The invention belongs to the technical field of safety monitoring of synthesis of diethyl phenylethyl malonate, and relates to a safety monitoring method for synthesis of diethyl phenylethyl malonate based on reactive distillation. The invention helps to reduce production interruption and downtime caused by equipment failure by analyzing the safety of target distillation equipment, helps to improve production efficiency, and reduces production costs. By analyzing the external environment compliance of the target distillation equipment before and during operation, it helps to timely discover and prevent potential environmental safety risks. By analyzing the operational safety of the target distillation equipment, the destruction of the target distillation equipment and the occurrence of safety accidents are avoided, and it also helps to improve the operating efficiency of the equipment, reduce energy consumption and production costs, and by analyzing the leakage safety of the target distillation equipment, it helps to timely discover and warn potential leakage risks, avoid the expansion of leakage accidents, and protect equipment and personnel safety.

Description

Technical Field

[0001] The invention belongs to the technical field of safety monitoring of diethyl phenylethyl malonate synthesis, and relates to a safety monitoring method for diethyl phenylethyl malonate synthesis based on reactive distillation. Background Art

[0002] Diethyl phenylethyl malonate is an organic compound that has important applications as a pharmaceutical intermediate in industrial and chemical synthesis, especially in the production of drugs such as phenobarbital and primidone. Since the synthesis of diethyl phenylethyl malonate involves high temperature, high pressure and other conditions, and the raw materials and products are mostly flammable, explosive and toxic chemicals, safety monitoring is particularly important during the synthesis process. Therefore, a safety monitoring system for the synthesis of diethyl phenylethyl malonate is of great significance.

[0003] The existing synthesis safety monitoring system for diethyl phenylethylmalonate mainly detects key parameters such as temperature, pressure, flow rate, etc. during the synthesis process to ensure that they fluctuate within a safe range.

[0004] However, the existing safety monitoring system for the synthesis of diethyl phenylethyl malonate ignores the extraction monitoring and analysis of the safety of the distillation equipment, which may cause safety accidents due to minor damage to the distillation equipment and untimely maintenance. It is also unable to reduce production interruptions and downtime caused by equipment failures, which is not conducive to improving production efficiency and reducing production costs.

[0005] The existing safety monitoring system for the synthesis of diethyl phenylethylmalonate lacks the ability to assess the impact of the environment on the startup and operation of the equipment, making it impossible to promptly detect and prevent potential environmental safety risks, such as high temperature that may cause equipment overheating and high humidity that may cause equipment corrosion.

[0006] The existing synthesis safety monitoring system for diethyl phenylethylmalonate ignores the monitoring and analysis of its leakage during the synthesis process, so it is unable to timely discover and warn of potential leakage risks, which is not conducive to avoiding the expansion of leakage accidents and protecting the safety of equipment and personnel. Summary of the invention

[0007] In view of this, in order to solve the problems raised in the above background technology, a safety monitoring method for the synthesis of diethyl phenylethyl malonate based on reactive distillation is now proposed.

[0008] The purpose of the present invention can be achieved through the following technical scheme: The present invention provides a safety monitoring method for the synthesis of diethyl phenylethyl malonate based on reactive distillation, comprising: S1, safety monitoring and analysis of distillation equipment: the distillation equipment for synthesizing the target diethyl phenylethyl malonate by distillation is recorded as the target distillation equipment, the target distillation equipment is monitored, the safety monitoring data of the target distillation equipment is obtained, the safety situation of the target distillation equipment is analyzed, and processing is performed accordingly.

[0009] S2. Environmental safety monitoring and analysis: Monitor the external environment of the target distillation equipment before and during operation, obtain the external environment data of the target distillation equipment before and during operation, analyze the compliance of the external environment of the target distillation equipment before and during operation, and take corresponding measures.

[0010] S3. Safety monitoring and analysis of distillation process: monitor the distillation process of the target distillation equipment in real time, obtain the operating data of the target distillation equipment, analyze the operating safety of the target distillation equipment, and take corresponding measures.

[0011] S4. Leakage safety monitoring and analysis: monitor the leakage of the target distillation equipment during the distillation process, obtain the leakage data of the target distillation equipment during the distillation process, analyze the leakage safety of the target distillation equipment, and handle it accordingly.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention obtains the safety monitoring data of the target distillation equipment, analyzes the safety status of the target distillation equipment, monitors and analyzes the key parts of the target distillation equipment from multiple angles such as structural deformation data, metal fatigue data and crack data, and the functional completeness of each safety device, thereby avoiding safety accidents caused by untimely maintenance of minor damage to the distillation equipment, helping to reduce production interruptions and downtime caused by equipment failures, helping to improve production efficiency and reduce production costs.

[0013] 2. The present invention obtains the external environmental data of the target distillation equipment before and during operation, analyzes the external environmental compliance of the target distillation equipment before and during operation, and effectively evaluates the impact of the environment on the startup and operation of the equipment, which helps to timely discover and prevent potential environmental safety risks.

[0014] 3. The present invention obtains the operating data of the target distillation equipment, analyzes the operating safety of the target distillation equipment, and monitors the operating status of the target distillation equipment in real time, which helps to timely diagnose whether the equipment has faults or potential problems and take countermeasures, thereby avoiding damage to the target distillation equipment and the occurrence of safety accidents, and also helps to improve the operating efficiency of the equipment and reduce energy consumption and production costs.

[0015] 4. The present invention obtains the leakage data of the target distillation equipment during the distillation process and analyzes the leakage safety of the target distillation equipment, which helps to timely discover and warn of potential leakage risks, avoids the expansion of leakage accidents, protects the safety of equipment and personnel, and helps to formulate reasonable maintenance plans and replacement cycles to ensure that the equipment operates in the best condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram for implementing the method steps of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 As shown, the present invention provides a safety monitoring method for the synthesis of diethyl phenylethyl malonate based on reactive distillation, and the specific steps are as follows: S1, safety monitoring and analysis of distillation equipment: the distillation equipment for synthesizing the target diethyl phenylethyl malonate by distillation is recorded as the target distillation equipment, the target distillation equipment is monitored, the safety monitoring data of the target distillation equipment is obtained, the safety situation of the target distillation equipment is analyzed, and processing is performed accordingly.

[0020] As a preferred feasible embodiment, the safety monitoring data of the target distillation equipment includes structural deformation data, metal fatigue data and crack data of each component part and functional completeness of each safety device.

[0021] It should be further explained that the safety devices include but are not limited to safety valves, pressure gauges, temperature sensors and emergency stop buttons.

[0022] It should be noted that the specific method of obtaining the functional completeness of the safety valve is: use a safety valve calibration bench to perform a discharge test on the safety valve of the target distillation equipment. If it can be correctly reset within a set time under a preset pressure, the functional completeness of the safety valve of the target distillation equipment is recorded as functionally complete; otherwise, the functional completeness of the safety valve of the target distillation equipment is recorded as functionally incomplete.

[0023] The specific method for obtaining the functional completeness of the pressure gauge is: applying a known air pressure to the pressure gauge of the target distillation equipment, reading the reading of the pressure gauge of the target distillation equipment, and comparing it with the known air pressure. If the difference is within the set allowable difference, the functional completeness of the pressure gauge of the target distillation equipment is recorded as functional completeness; otherwise, the functional completeness of the pressure gauge of the target distillation equipment is recorded as functional incompleteness.

[0024] The specific method for obtaining the functional completeness of the temperature sensor is: applying a known temperature to the temperature sensor of the target distillation equipment, reading the reading of the temperature sensor of the target distillation equipment, and comparing it with the known temperature. If the difference is within the set allowable difference, the functional completeness of the temperature sensor of the target distillation equipment is recorded as functional completeness; otherwise, the functional completeness of the temperature sensor of the target distillation equipment is recorded as functional incompleteness.

[0025] The specific method for obtaining the functional completeness of the emergency stop button is: press the button in a simulated emergency situation to confirm whether the emergency stop button of the target distillation equipment responds immediately; if after pressing the button, all associated equipment of the target distillation equipment can be quickly and safely shut down without delay or omission, then the functional completeness of the emergency stop button of the target distillation equipment is considered to be functionally complete; otherwise, the functional completeness of the emergency stop button of the target distillation equipment is considered to be functionally incomplete.

[0026] The structural deformation data include size deviation and shape deviation.

[0027] It needs to be further explained that the specific method for obtaining the size deviation and shape deviation is: use the deployed three-dimensional laser scanner to scan the target distillation equipment to obtain the three-dimensional data of the target distillation equipment, and then obtain the three-dimensional visualization model of the target distillation equipment according to the software construction, and then compare it with the standard three-dimensional visualization model of the target distillation equipment stored in the database to obtain the deviation values ​​of the diameter, length and thickness of each key part in the three-dimensional visualization model of the target distillation equipment and the standard diameter, standard length and standard thickness of the corresponding key parts in its standard three-dimensional visualization model, and further compare the deviation values ​​of the diameter, length and thickness of each key part in the three-dimensional visualization model of the target distillation equipment and the standard diameter, standard length and standard thickness of the corresponding key parts in the standard three-dimensional visualization model with the standard diameter, standard length and standard thickness of each key part in the standard three-dimensional visualization model, and then sum them up, and then record the result as the size deviation.

[0028] The three-dimensional visualization model of the target distillation equipment is compared with the standard three-dimensional visualization model of the target distillation equipment stored in the database to obtain the deviation value between the shape contour corresponding area of ​​each key part in the three-dimensional visualization model of the target distillation equipment and the standard shape contour corresponding area of ​​the corresponding key part in its standard three-dimensional visualization model. The deviation value is divided by the standard shape contour corresponding area of ​​each key part in the standard three-dimensional visualization model, and the quotient is recorded as the shape deviation degree.

[0029] Metal fatigue data includes the number of stress cycles, crack growth rate and surface crack density.

[0030] It should be further explained that the specific method for obtaining the stress cycle number is: directly extracting the stress cycle number of each component of the target distillation equipment from the maintenance record sheet of the target distillation equipment.

[0031] The specific method for obtaining the crack growth rate is: scanning the target distillation equipment with a deployed three-dimensional laser scanner at the starting time point and the ending time point of the set detection interval respectively, obtaining the starting three-dimensional data and the ending three-dimensional data of the target distillation equipment, and then obtaining the starting three-dimensional visualization model and the ending three-dimensional visualization model of the target distillation equipment according to the software construction, further extracting the length of each existing crack belonging to each key part in the starting three-dimensional visualization model of the target distillation equipment and the length of the existing crack belonging to the corresponding key part in the ending three-dimensional visualization model, subtracting the length of each existing crack belonging to each key part in the ending three-dimensional visualization model of the target distillation equipment from the length of the existing crack belonging to the corresponding key part in the starting three-dimensional visualization model, and recording the difference as the extension length of each existing crack belonging to each key part of the target distillation equipment, and then dividing the difference with the set detection interval, and recording the quotient as the extension rate of each existing crack belonging to each key part of the target distillation equipment, averaging the quotient to obtain the average extension rate of the existing crack belonging to each key part of the target distillation equipment, and recording the average extension rate as the crack growth rate of each key part of the target distillation equipment.

[0032] The specific method for obtaining the surface crack density is: directly extracting the surface crack distribution area of ​​each key part of the target distillation equipment from the standard three-dimensional visualization model of the target distillation equipment, dividing it with the total surface area of ​​each key part of the target distillation equipment stored in the database, and recording the quotient as the surface crack density of each key part of the target distillation equipment.

[0033] Crack data includes the number of cracks and the depth of each crack.

[0034] It should be further explained that the specific method for obtaining the number of cracks and the depth of each crack is: directly extracting the number of cracks and the depth of each crack of each key part of the target distillation equipment from the standard three-dimensional visualization model of the target distillation equipment.

[0035] As a preferred feasible embodiment, the process of analyzing the safety of the target distillation equipment needs to construct the safety factor of each component of the target distillation equipment, and the specific analysis method includes: extracting the size deviation and shape deviation of each component of the target distillation equipment, analyzing the structural deformation degree Sdd of each component of the target distillation equipment i , where i = 1, 2, ..., a, i is the number corresponding to each component.

[0036] Extract the stress cycle number, crack growth rate and surface crack density of each component of the target distillation equipment, and analyze the metal fatigue Mf of each component of the target distillation equipment i .

[0037] Extract the number of cracks and the depth of each crack in each component of the target distillation equipment, and analyze the weld cracking degree Wcd of each component of the target distillation equipment i .

[0038] According to the analytical formula Obtain the safety factor SF of each component of the target distillation equipment i , where β1, β2, and β3 are the weight factors of the safety factor corresponding to the set structural deformation, metal fatigue, and weld cracking degree, respectively.

[0039] It should be further explained that the weight factors of the safety factors corresponding to the set structural deformation degree, metal fatigue degree and weld cracking degree can be set to 0.2, 0.4 and 0.4 respectively.

[0040] Structural deformation reflects the response of the structure under external loads and is one of the important indicators for evaluating structural performance. Although it does not directly threaten the safety of the structure like metal fatigue and weld cracking, excessive deformation may also lead to structural failure or performance degradation. Therefore, the weight factor of the safety factor corresponding to the structural deformation is 0.2.

[0041] Metal fatigue is an extremely important and common failure mode in engineering structures. When a material works under cyclic stress or strain, tiny structural changes will occur inside it, eventually leading to material performance degradation or even fracture. Fatigue failure is often sudden and unpredictable. Therefore, the weighting factor assigned to the safety factor corresponding to metal fatigue is 0.4.

[0042] Welds are another location in engineering structures that is prone to failure. Weld cracking may not only lead to overall failure of the structure, but may also cause serious safety accidents. Therefore, the weight factor of the safety factor corresponding to the weld cracking degree is 0.4.

[0043] As a preferred feasible embodiment, the safety condition of the target distillation equipment is specifically analyzed in the following manner: the safety factor of each component of the target distillation equipment is compared with the set safety factor threshold of the component, and the component parts of the target distillation equipment whose safety factor is less than the safety factor threshold of the component are screened out, and they are recorded as the risky component parts of the target distillation equipment.

[0044] The functional completeness of each safety device of the target distillation equipment is extracted, and the safety devices of the target distillation equipment whose functional completeness is incomplete are obtained, and they are recorded as each risk safety device of the target distillation equipment.

[0045] Then, the number of components and the number of safety devices of the target distillation equipment and the number of risk components and the number of risk safety devices of the target distillation equipment are counted respectively, and the number of risk components and the number of risk safety devices of the target distillation equipment are accumulated and ratioed with the sum of the number of components and the number of safety devices of the target distillation equipment, which is recorded as the risk equipment ratio of the target distillation equipment. If it is less than or equal to the set minimum risk equipment ratio, maintenance is performed on each risk component and each risk safety device of the target distillation equipment; otherwise, the target distillation equipment is replaced.

[0046] As a preferred feasible embodiment, the structural deformation degree of each component of the target distillation equipment is specifically analyzed by extracting the size deviation and shape deviation of each component of the target distillation equipment, which are respectively recorded as Size i 、Shape i , sum them up, and perform a base ten logarithm operation on the sum to obtain the structural deformation degree Sdd of each component of the target distillation equipment i .

[0047] As a preferred feasible embodiment, the metal fatigue degree of each component of the target distillation equipment is specifically analyzed by extracting the stress cycle number, crack growth rate and surface crack density of each component of the target distillation equipment, which are respectively recorded as ScM i , CgV i ScD i , analyze the metal fatigue of each component of the target distillation equipment ScM i ′、CgV i ′, ScD i ′ are the stress cycle number threshold, permissible crack growth rate and permissible surface crack density of the i-th component of the target distillation equipment extracted from the database, and e is a natural constant.

[0048] As a preferred feasible embodiment, the specific analysis method of the weld cracking degree of each component of the target distillation equipment includes: extracting the number of cracks and the depth of each crack of each component of the target distillation equipment, which are respectively recorded as FM i , FH ij , where j = 1, 2, ..., b, j is the number corresponding to each crack, b is the number of cracks, and the cracking degree of the welds of each component of the target distillation equipment is analyzed. Where FH0 is the permissible crack depth of the component part of the target distillation equipment.

[0049] The present invention obtains safety monitoring data of target distillation equipment, analyzes the safety status of the target distillation equipment, monitors and analyzes key parts of the target distillation equipment from multiple angles such as structural deformation data, metal fatigue data and crack data, and functional completeness of various safety devices, thereby avoiding safety accidents caused by untimely maintenance of minor damage to the distillation equipment, helping to reduce production interruptions and downtime caused by equipment failures, helping to improve production efficiency and reduce production costs.

[0050] S2. Environmental safety monitoring and analysis: Monitor the external environment of the target distillation equipment before and during operation, obtain the external environment data of the target distillation equipment before and during operation, analyze the compliance of the external environment of the target distillation equipment before and during operation, and take corresponding measures.

[0051] As a preferred feasible embodiment, the external environment data of the target distillation equipment before and during operation includes temperature, humidity, air pressure and static electricity.

[0052] It needs to be further explained that the specific method of obtaining the temperature, humidity, air pressure and static electricity of the target distillation equipment before and during operation is: using the deployed temperature sensors, humidity sensors and barometers to directly detect the temperature, humidity and air pressure of the target distillation equipment before and during operation.

[0053] The electrostatic field strength of the target distillation equipment before and during operation is directly detected by the deployed electric field density meter, and compared with the set electrostatic field strength threshold. If it is greater than the set electrostatic field strength threshold, it means that static electricity exists in the environment of the target distillation equipment before and during operation; otherwise, it means that static electricity does not exist in the environment of the target distillation equipment before and during operation.

[0054] As a preferred feasible embodiment, the external environment of the target distillation equipment before and during operation is in compliance with the conditions, and the specific analysis method includes: extracting the temperature, humidity, air pressure and static electricity of the target distillation equipment before and during operation.

[0055] The temperature of the target distillation equipment before operation is matched with the suitable operating temperature range of the target distillation equipment extracted from the database. If the temperature of the target distillation equipment before operation does not fall within the suitable operating temperature range of the target distillation equipment, it means that the temperature adjustment demand of the environment in which the target distillation equipment is located before operation is a demand that needs to be adjusted, and then it is adjusted.

[0056] Similarly, the temperature adjustment requirements of the environment in which the target distillation equipment is located during operation, as well as the humidity and air pressure adjustment requirements of the environment in which the target distillation equipment is located before and during operation can be obtained and processed.

[0057] If static electricity exists in the environment of the target distillation equipment before and during operation, the synthesis operation of the target diethyl phenylethyl malonate is immediately stopped and static electricity elimination treatment is performed.

[0058] The present invention obtains the external environmental data of the target distillation equipment before and during operation, analyzes the external environmental compliance of the target distillation equipment before and during operation, and effectively evaluates the impact of the environment on the startup and operation of the equipment, which helps to timely discover and prevent potential environmental safety risks.

[0059] S3. Safety monitoring and analysis of distillation process: monitor the distillation process of the target distillation equipment in real time, obtain the operating data of the target distillation equipment, analyze the operating safety of the target distillation equipment, and take corresponding measures.

[0060] As a preferred feasible embodiment, the operation data of the target distillation equipment includes the temperature and pressure of each monitoring position and the material inlet and outlet balance degree of the material monitoring position.

[0061] It should be further explained that the specific method for obtaining the temperature and pressure at each monitoring position of the target distillation equipment is: directly measuring the temperature and pressure at each monitoring position of the target distillation equipment using the deployed temperature sensors and pressure gauges.

[0062] The specific method for obtaining the material inlet and outlet balance degree of the material monitoring position of the target distillation equipment is: placing a ruler on the upper tower plate and the lower tower plate respectively, measuring the liquid level heights of the upper tower plate and the lower tower plate, and further subtracting them to obtain the liquid level height difference between the upper tower plate and the lower tower plate, which is recorded as the material inlet and outlet balance degree of the material monitoring position of the target distillation equipment.

[0063] As a preferred feasible embodiment, the specific analysis method of the operation safety of the target distillation equipment includes: extracting the temperature and pressure of each monitoring position of the target distillation equipment, and matching them with the temperature range and pressure range of each monitoring position of the target distillation equipment stored in the database; if the temperature or pressure of a monitoring position of the target distillation equipment does not belong to the corresponding temperature range or pressure range, the synthesis operation of the target diethyl phenylethyl malonate is immediately stopped.

[0064] Extract the material in-and-out balance Miob of the material monitoring position of the target distillation equipment, and analyze the safety factor of the material monitoring position of the target distillation equipment Miob0 is the standard material inlet and outlet balance of the material monitoring position of the target distillation equipment extracted from the database.

[0065] The safety factor of the material monitoring position of the target distillation equipment is compared with the set safety factor threshold of the material monitoring position. If it is less than the safety factor threshold of the material monitoring position, the synthesis operation of the target diethyl phenylethyl malonate is immediately stopped.

[0066] The present invention obtains the operating data of the target distillation equipment, analyzes the operating safety of the target distillation equipment, and monitors the operating status of the target distillation equipment in real time, which helps to timely diagnose whether the equipment has faults or potential problems and take countermeasures, thereby avoiding damage to the target distillation equipment and the occurrence of safety accidents, and also helps to improve the operating efficiency of the equipment and reduce energy consumption and production costs.

[0067] S4. Leakage safety monitoring and analysis: monitor the leakage of the target distillation equipment during the distillation process, obtain the leakage data of the target distillation equipment during the distillation process, analyze the leakage safety of the target distillation equipment, and handle it accordingly.

[0068] As a preferred feasible embodiment, the leakage data of the target distillation equipment during the distillation process includes the concentration of each leakage substance in the environment around the equipment.

[0069] It should be further explained that the specific method for obtaining the concentrations of various leakage substances in the equipment surrounding environment of the target distillation equipment during the distillation process is: using the deployed leakage detector to measure and obtain the concentrations of various leakage substances in the equipment surrounding environment of the target distillation equipment during the distillation process.

[0070] As a preferred feasible embodiment, the leakage safety condition of the target distillation equipment is specifically analyzed by: extracting the leakage concentration Lc of the equipment surrounding environment of the target distillation equipment during the distillation process; g , where g = 1, 2, ..., d, g is the number corresponding to each leak, according to the analysis formula Get the leakage warning coefficient WLC of the equipment surrounding environment of the target distillation equipment during the distillation process, where Lc′ g It is the warning concentration reference value of the g-th leakage product in the equipment surrounding environment of the set target distillation equipment during the distillation process.

[0071] The leakage warning coefficient of the equipment surrounding environment of the target distillation equipment during the distillation process is matched with the leakage warning coefficient range corresponding to each leakage warning level stored in the database to obtain the leakage warning level of the equipment surrounding environment of the target distillation equipment during the distillation process, and to provide warning and response measures.

[0072] It should be further explained that the response measures include but are not limited to: (1) Immediate isolation: quickly isolate the leakage area, prevent the leakage from flowing to other work areas or environments, and use fences, warning tapes, etc. to mark the danger zone.

[0073] (2) Cut off the source of leakage: immediately close the relevant valves or cut off the power supply of the equipment to prevent the leakage from continuing.

[0074] (3) Leakage collection and disposal: Use adsorbent materials, such as sand, soil, activated carbon or special chemical absorbents, to cover liquid leaks to prevent diffusion and penetration.

[0075] (4) Open the ventilation system or use a fan to guide the leaked gas to the outside, while ensuring the supply of fresh air to avoid the formation of explosive mixtures.

[0076] The present invention obtains leakage data of target distillation equipment during the distillation process and analyzes the leakage safety status of the target distillation equipment, which helps to timely discover and warn of potential leakage risks, avoids the expansion of leakage accidents, protects the safety of equipment and personnel, and helps to formulate reasonable maintenance plans and replacement cycles to ensure that the equipment operates in the best state.

[0077] The above contents are merely examples and explanations of the concept of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A method for monitoring the synthesis safety of diethyl phenylethylmalonate based on reactive distillation, characterized in that: include: S1. Safety monitoring and analysis of distillation equipment: record the distillation equipment for distilling and synthesizing the target diethyl phenylethyl malonate as the target distillation equipment, monitor the target distillation equipment, obtain the safety monitoring data of the target distillation equipment, analyze the safety situation of the target distillation equipment, and deal with it accordingly; S2. Operating environment safety monitoring and analysis: monitor the external environment of the target distillation equipment before and during operation, obtain the external environment data of the target distillation equipment before and during operation, analyze the external environment compliance of the target distillation equipment before and during operation, and handle it accordingly; S3. Safety monitoring and analysis of distillation process: monitor the distillation process of the target distillation equipment in real time, obtain the operation data of the target distillation equipment, analyze the operation safety of the target distillation equipment, and take corresponding measures; S4. Leakage safety monitoring and analysis: monitor the leakage of the target distillation equipment during the distillation process, obtain the leakage data of the target distillation equipment during the distillation process, analyze the leakage safety of the target distillation equipment, and handle it accordingly; In the process of analyzing the safety of the target distillation equipment, it is necessary to construct the safety factor of each component of the target distillation equipment, and the specific analysis method includes: Extract the size deviation and shape deviation of each component of the target distillation equipment, and analyze the structural deformation of each component of the target distillation equipment ,in , is the number corresponding to each component; Extract the stress cycle number, crack growth rate and surface crack density of each component of the target distillation equipment, and analyze the metal fatigue of each component of the target distillation equipment ; Extract the number of cracks and the depth of each crack in each component of the target distillation equipment, and analyze the cracking degree of the welds in each component of the target distillation equipment ; According to the analytical formula Obtain the safety factor of each component of the target distillation equipment ,in They are weight factors of safety factors corresponding to the set structural deformation, metal fatigue and weld cracking degrees; The specific analysis method of the safety condition of the target distillation equipment includes: The safety factor of each component of the target distillation equipment is compared with the set safety factor threshold of the component, and the component of the target distillation equipment whose safety factor is less than the safety factor threshold of the component is screened out, and the component is recorded as each risk component of the target distillation equipment; Extracting the functional completeness of each safety device of the target distillation equipment, and obtaining each safety device of the target distillation equipment whose functional completeness is incomplete, and recording it as each risk safety device of the target distillation equipment; Then, the number of components and the number of safety devices of the target distillation equipment and the number of risk components and the number of risk safety devices of the target distillation equipment are counted respectively, and the number of risk components and the number of risk safety devices of the target distillation equipment are accumulated and ratioed to the sum of the number of components and the number of safety devices of the target distillation equipment, which is recorded as the risk equipment ratio of the target distillation equipment. If it is less than or equal to the set minimum risk equipment ratio, each risk component and each risk safety device of the target distillation equipment is maintained, otherwise, the target distillation equipment is replaced; The structural deformation degree of each component of the target distillation equipment is specifically analyzed in the following manner: The size deviation and shape deviation of each component of the target distillation equipment are extracted and recorded as , sum them up, and perform a base-10 logarithm operation on the sum to obtain the structural deformation degree of each component of the target distillation equipment ; The specific analysis method of the metal fatigue degree of each component of the target distillation equipment includes: The stress cycle number, crack growth rate and surface crack density of each component of the target distillation equipment are extracted and recorded as , analyze the metal fatigue of each component of the target distillation equipment ,in They are the first The stress cycle number threshold, permissible crack growth rate and permissible surface crack density of each component part are is a natural constant; The specific analysis method of the weld cracking degree of each component of the target distillation equipment includes: The number of cracks and the depth of each crack in each component of the target distillation equipment are extracted and recorded as ,in , is the number corresponding to each crack, The number of cracks corresponding to the target distillation equipment is analyzed to determine the cracking degree of the welds of each component. ,in The permissible crack depth of the component parts of the target distillation equipment is set.

2. A method for monitoring the synthesis safety of diethyl phenylethyl malonate based on reactive distillation according to claim 1, characterized in that: The safety monitoring data of the target distillation equipment includes structural deformation data, metal fatigue data and crack data of each component part and functional completeness of each safety device; Among them, the structural deformation data includes size deviation and shape deviation; Metal fatigue data include the number of stress cycles, crack growth rate, and surface crack density; The crack data include the number of cracks and the depth of each crack; The external environment data of the target distillation equipment before and during operation include temperature, humidity, air pressure and static electricity; The operating data of the target distillation equipment includes the temperature and pressure of each monitoring position and the material inlet and outlet balance degree of the material monitoring position; The leakage data of the target distillation equipment during the distillation process includes the concentration of each leakage substance in the environment around the equipment.

3. A method for monitoring the synthesis of diethyl phenylethyl malonate based on reactive distillation according to claim 2, characterized in that: The external environment of the target distillation equipment before and during operation is in compliance with the conditions, and the specific analysis methods include: Extract the temperature, humidity, air pressure and static electricity of the target distillation equipment before and during operation; Matching the temperature of the target distillation equipment before operation with the suitable operating temperature range of the target distillation equipment extracted from the database; if the temperature of the target distillation equipment before operation does not fall within the suitable operating temperature range of the target distillation equipment, it means that the temperature adjustment demand of the environment where the target distillation equipment is located before operation is a demand that needs to be adjusted, and then adjusting it; Similarly, the temperature adjustment requirements of the environment in which the target distillation equipment is located during the operation, as well as the humidity and air pressure adjustment requirements of the environment in which the target distillation equipment is located before and during the operation, can be obtained and processed; If static electricity exists in the environment of the target distillation equipment before and during operation, the synthesis operation of the target diethyl phenylethyl malonate is immediately stopped and static electricity elimination treatment is performed.

4. A method for monitoring the synthesis safety of diethyl phenylethyl malonate based on reactive distillation according to claim 2, characterized in that: The specific analysis method of the operating safety of the target distillation equipment includes: Extracting the temperature and pressure of each monitoring position of the target distillation equipment, and matching them with the temperature range and pressure range of each monitoring position of the target distillation equipment stored in the database, if the temperature or pressure of a monitoring position of the target distillation equipment does not belong to the corresponding temperature range or pressure range, immediately stopping the synthesis operation of the target diethyl phenylethyl malonate; Extract the material inlet and outlet balance of the material monitoring position of the target distillation equipment , analyze the safety factor of the material monitoring position of the target distillation equipment ,in The permissible material inlet and outlet balance degree of the material monitoring position of the target distillation equipment extracted from the database; The safety factor of the material monitoring position of the target distillation equipment is compared with the set safety factor threshold of the material monitoring position. If it is less than the safety factor threshold of the material monitoring position, the synthesis operation of the target diethyl phenylethyl malonate is immediately stopped.

5. A method for monitoring the synthesis safety of diethyl phenylethyl malonate based on reactive distillation according to claim 2, characterized in that: The leakage safety situation of the target distillation equipment is specifically analyzed in the following ways: Extract the concentration of various leaks in the environment around the target distillation equipment during the distillation process ,in , is the number corresponding to each leak, according to the analysis formula Obtain the leakage warning coefficient of the equipment surrounding environment of the target distillation equipment during the distillation process ,in The first value of the equipment surrounding environment of the target distillation equipment during the distillation process The warning concentration reference value of each leak; The leakage warning coefficient of the equipment surrounding environment of the target distillation equipment during the distillation process is matched with the leakage warning coefficient range corresponding to each leakage warning level stored in the database to obtain the leakage warning level of the equipment surrounding environment of the target distillation equipment during the distillation process, and to provide warning and response measures.

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