Method, apparatus, device, and readable medium for maintenance of condenser of polymerization reaction

Abstract

The application discloses a kind of polymeric reaction condenser's maintenance method, device, equipment and readable medium, scheme can include: obtaining the online operating parameter related to the equipment maintenance process of the condenser to be maintained, the online operating parameter is preprocessed;In simulation program, the polymeric reaction carried out in reactor is simulated to obtain the physical property data at the outlet of reactor under real-time working condition;The equipment design parameter of the condenser to be maintained, the online operating parameter after preprocessing, the physical property data at the outlet of reactor are input into the index calculation model established in advance to calculate the numerical set of the monitored index;When monitoring the numerical value of any one of the numerical set of the monitored index, the numerical value of the monitored index corresponding to the predetermined threshold range of the arbitrary one is monitored, the copolymer attached on the inner wall of the condenser is flushed and cleaned.

Description

Technical Field

[0001] This invention relates to the field of equipment maintenance technology, and more specifically, to a method, apparatus, equipment, and readable medium for maintaining a condenser in a polymerization reaction. Background Technology

[0002] Copolymerization in chemical production processes involves synthesizing monomers into macromolecules. During this process, the formation of products or intermediates significantly alters the viscosity, solubility, and heat capacity of the materials. From a process perspective, there is sometimes a need to condense and separate the gaseous substances generated in the copolymerization reaction. This process involves a change in the physical state of the substances, such as from gas to liquid. This condensation separation process can easily lead to blockages in the condenser, thus affecting production. Therefore, maintenance work such as clearing blockages from the condenser is necessary during the heat exchange reaction. Currently, polymer equipment is typically disassembled and cleaned after a malfunction occurs to resolve blockages, which can easily cause downtime and affect production schedules. Summary of the Invention

[0003] The present invention provides a method, apparatus, equipment and readable medium for maintaining a condenser in a polymerization reaction, in order to overcome at least one technical problem existing in the prior art.

[0004] According to a first aspect of the present invention, a method for maintaining a condenser in a polymerization reaction is provided, comprising:

[0005] Acquire online operating parameters related to the equipment maintenance process of the condenser to be maintained, the condenser being used to condense the target polymer generated after polymerization in the reactor;

[0006] The online operating parameters are preprocessed to fill in at least the missing time-series data in the online operating parameters and remove the noise signals included in the online operating parameters, so as to obtain the preprocessed online operating parameters.

[0007] The polymerization reaction in the reactor is simulated in a simulation program to obtain the physical property data at the reactor outlet under real-time operating conditions. The equipment design parameters of the condenser to be maintained, the pre-processed online operating parameters, and the physical property data at the reactor outlet are input into a pre-established index calculation model to calculate a set of values ​​for the monitored indicators. The set of values ​​for the monitored indicators includes several monitoring indicators related to the blockage condition of the condenser to be maintained. The index calculation model is a pre-designed predictive model based on data related to the heat exchange process within the condenser, used to calculate the values ​​of monitoring indicators related to the blockage condition.

[0008] When the value of any one of the monitored indicators exceeds the predetermined threshold range corresponding to that one monitored indicator, the copolymer adhering to the inner wall of the condenser is rinsed and cleaned.

[0009] Preferably, the acquisition of online operating parameters related to the equipment maintenance process of the condenser to be maintained specifically includes:

[0010] A data acquisition interface is set up, which is used to acquire the online operating parameters from the discrete control system corresponding to the condenser. The online operating parameters include the operating parameters of the control loop, including the temperature, pressure, flow rate of the substance flowing in the control loop, and the sampled component analysis results.

[0011] Preferably, the preprocessing of the online operating parameters, to at least fill in missing time-series data in the online operating parameters and remove noise signals included in the online operating parameters, to obtain preprocessed online operating parameters, specifically includes:

[0012] The missing time-series data in the online operating parameters are filled with data, the abnormal data in the online operating parameters are cleaned up, the online operating parameters are smoothed, and the online operating parameters are detrended to remove the offset generated when the sensor acquires the online operating parameters, so as to obtain the preprocessed online operating parameters.

[0013] Preferably, the process of establishing the pre-established index calculation model specifically includes:

[0014] Several monitoring indicators related to the blockage condition of the condenser to be maintained are selected, and a calculation formula for each monitoring indicator is designed to obtain several calculation formulas.

[0015] The aforementioned calculation formulas are encapsulated into a calculation software package. The input data required by the calculation software package consists of the parameters needed for the calculation formulas used to calculate the monitoring indicators related to the congestion condition. The output data of the calculation software package consists of the predicted values ​​of the monitoring indicators.

[0016] Preferably, the set of values ​​for the indicators to be monitored includes: the real-time heat load, total heat transfer coefficient, fouling factor, and heat transfer efficiency of the condenser.

[0017] Preferably, the step of rinsing and cleaning the copolymer adhering to the inner wall of the condenser specifically includes:

[0018] The first liquid phase material flowing out of the condenser outlet is separated into two parts after passing through a gas-liquid separator. The second liquid phase material is divided into two parts, including a first part and a second part. The first part is discharged as a product, and the second part is returned to the inlet side of the condenser to wash and clean the copolymer adhering to the inner wall of the condenser.

[0019] According to a second aspect of the present invention, a maintenance device for a condenser in a polymerization reaction is provided, comprising:

[0020] An online operating parameter acquisition module is used to acquire online operating parameters related to the equipment maintenance process of the condenser to be maintained, wherein the condenser is used to condense the target polymer generated after polymerization in the reactor;

[0021] The parameter preprocessing module is used to preprocess the online operating parameters to at least fill in the missing time series data in the online operating parameters and remove the noise signals included in the online operating parameters to obtain the preprocessed online operating parameters.

[0022] The module for acquiring the set of values ​​of the indicators to be monitored is used to simulate the polymerization reaction in the reactor in the simulation program to obtain the physical property data at the outlet of the reactor under real-time operating conditions; the equipment design parameters of the condenser to be maintained, the pre-processed online operating parameters, and the physical property data at the outlet of the reactor are input into a pre-established indicator calculation model to calculate the set of values ​​of the indicators to be monitored; wherein, the set of values ​​of the indicators to be monitored includes the values ​​of several monitoring indicators related to the blockage condition of the condenser to be maintained; the indicator calculation model is a pre-designed predictive model based on data related to the heat exchange process in the condenser for calculating the values ​​of monitoring indicators related to the blockage condition.

[0023] The copolymer flushing and cleaning module is used to flush and clean the copolymer adhering to the inner wall of the condenser when the value of any one of the monitored indicators exceeds a predetermined threshold range corresponding to that one monitored indicator.

[0024] According to a third aspect of the present invention, a maintenance device for a condenser in a polymerization reaction is provided, comprising:

[0025] At least one processor; and,

[0026] A memory communicatively connected to the at least one processor; wherein,

[0027] The processor stores instructions that can be executed by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to:

[0028] Acquire online operating parameters related to the equipment maintenance process of the condenser to be maintained, the condenser being used to condense the target polymer generated after polymerization in the reactor;

[0029] The online operating parameters are preprocessed to fill in at least the missing time-series data in the online operating parameters and remove the noise signals included in the online operating parameters, so as to obtain the preprocessed online operating parameters.

[0030] The polymerization reaction in the reactor is simulated in a simulation program to obtain the physical property data at the reactor outlet under real-time operating conditions. The equipment design parameters of the condenser to be maintained, the pre-processed online operating parameters, and the physical property data at the reactor outlet are input into a pre-established index calculation model to calculate a set of values ​​for the monitored indicators. The set of values ​​for the monitored indicators includes several monitoring indicators related to the blockage condition of the condenser to be maintained. The index calculation model is a pre-designed predictive model based on data related to the heat exchange process within the condenser, used to calculate the values ​​of monitoring indicators related to the blockage condition.

[0031] When the value of any one of the monitored indicators exceeds the predetermined threshold range corresponding to that one monitored indicator, the copolymer adhering to the inner wall of the condenser is rinsed and cleaned.

[0032] According to a fourth aspect of the present invention, a computer-readable medium is provided having computer-readable instructions stored thereon, the computer-readable instructions being executable by a processor to implement the maintenance method for a condenser of a polymerization reaction described above.

[0033] One embodiment of this specification achieves at least the following beneficial effects: By establishing a mechanistic model of the polymerization reaction process, combined with component property estimation, a calculation model of the heat exchange process associated with the material reaction process is established. Through real-time production monitoring, equipment performance indicators are calculated. Combined with on-site process technology analysis, a side-stream flushing operation plan is designed, enabling intervention in blockage scenarios during production through performance monitoring. Before condenser failure affects production, it helps process engineers and equipment engineers determine the cause of the failure, intervene in advance, confirm the effectiveness of the intervention measures, and ensure the continuous operation of the production process. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 The embodiments provided in this specification correspond to Figure 2 A schematic diagram illustrating an application scenario of a maintenance method for a condenser in a polymerization reaction;

[0036] Figure 2 A schematic flowchart illustrating a maintenance method for a condenser in a polymerization reaction, provided as an embodiment of this specification.

[0037] Figure 3 The embodiments provided in this specification correspond to Figure 1 A schematic diagram of the structure of a maintenance device for a condenser in a polymerization reaction;

[0038] Figure 4 The embodiments provided in this specification correspond to Figure 1 A schematic diagram of the structure of a maintenance device for a condenser in a polymerization reaction.

[0039] The components are: 1. Polymerization reactor; 2. First pipeline; 3. Condenser; 4. Reflux tank; 5. Discharge pump; 6. First valve; 7. Second valve; 8. Second pipeline; 9. Third pipeline. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of one or more embodiments of this specification clearer, the technical solutions of one or more embodiments of this specification will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of one or more embodiments of this specification.

[0041] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another.

[0042] As mentioned earlier, copolymerization in chemical production is a process that synthesizes monomers into macromolecular structures. During this process, the generation of products or intermediates can cause significant changes in the viscosity, solubility, and heat capacity of the materials. In addition, the material system in the polymerization process of copolymerization is complex and prone to copolymerization during the reaction. The generated products are easy to precipitate when cooled, which can cause abnormal operating conditions such as equipment blockage and thus reduce the heat exchange efficiency.

[0043] From a process perspective, there is sometimes a need to condense and separate the gaseous substances generated by copolymerization into monomers. During this process, the physical state of the substances changes, such as from gas to liquid. This condensation and separation process can easily lead to blockage of the condenser equipment, thereby affecting the production process. Therefore, there is a need to perform maintenance work such as clearing blockages from the condenser during the heat exchange reaction process.

[0044] In the embodiments of this specification, a maintenance method for a heat exchanger in a polymerization reaction is provided. By acquiring parameters related to monitoring indicators of the blockage condition of the condenser to be maintained in real time, the monitoring indicators related to the blockage condition of the condenser to be maintained can be calculated. When abnormalities are detected in these monitoring indicators, the process of removing the copolymer adhering to the inner wall of the condenser is initiated. Thus, it is not necessary to wait until the condenser actually experiences a blockage failure before maintenance is carried out, which can greatly extend the continuous operation time of the condenser and effectively improve the utilization rate of the equipment.

[0045] To address the shortcomings of existing technologies, this solution provides the following embodiments:

[0046] Figure 1 This is a schematic diagram illustrating an application scenario of a maintenance method for a condenser in a polymerization reaction, as described in the embodiments of this specification. Figure 1As shown, the copolymerization reaction is carried out in polymerization reactor 1. The materials required for the copolymerization reaction enter the polymerization reactor 1 through the first pipe 2. The substances in the copolymerization product that need to be condensed enter the condenser 3 through the third pipe 9. The condensed product enters the reflux tank 4 through the pipe. Due to the reasons mentioned above, the condenser 3 may become clogged. Therefore, the material flowing out of the reflux tank 4 can be pressurized by the discharge pump 5 and divided into two parts. The first part can be discharged as a product through the pipe (i.e., the pipe where the first valve 6 is located). The second part can be returned to the inlet side of the condenser 3 through the second pipe 8 (i.e., the pipe where the second valve 7 is located) to wash and clean the copolymer adhering to the inner wall of the condenser.

[0047] Next, a maintenance method for a condenser of a polymerization reaction provided in the embodiments of the specification will be described in detail with reference to the accompanying drawings.

[0048] Figure 2 A schematic flowchart illustrating a maintenance method for a heat exchanger used in a polymerization reaction, as provided in the embodiments of this specification, is shown below. Figure 2 As shown, the process may include the following steps.

[0049] Step 202: Obtain online operating parameters related to the equipment maintenance process of the condenser to be maintained, which is used to condense the target polymer generated after polymerization in the reactor.

[0050] Broadly speaking, a condenser is a type of heat exchanger that can convert gas or vapor into liquid and transfer heat from the tubes to the nearby air. Specifically, in this solution, the condenser can be used to condense and separate the gaseous substances generated after the copolymerization reaction in the reactor (the target polymer generated by the polymerization reaction in the reactor may also be in a gaseous state). During this process, the physical state of the substances changes, such as from gaseous to liquid, which can easily lead to blockage of the condenser equipment.

[0051] Step 204: Preprocess the above online operating parameters to fill in the missing time series data in the above online operating parameters and remove the noise signals included in the above online operating parameters, so as to obtain the preprocessed online operating parameters.

[0052] Because the initially collected online operating parameters related to the equipment maintenance process of the condenser to be maintained may contain noise data, and some data may be missing, it is not conducive to accurately calculating the monitoring indicators related to the blockage condition of the condenser to be maintained in the index calculation model based on these online operating parameters. Therefore, in this embodiment, the online operating parameters can be preprocessed. The specific type and method of preprocessing are not specifically limited in this embodiment and can be flexibly set according to the specific situation of the collected online operating parameters.

[0053] Step 206: Simulate the polymerization reaction in the reactor in the simulation program to obtain the physical property data at the reactor outlet under real-time operating conditions; input the equipment design parameters of the condenser to be maintained, the pre-processed online operating parameters, and the physical property data at the reactor outlet into a pre-established index calculation model to calculate a set of values ​​of the monitored indicators; wherein, the set of values ​​of the monitored indicators includes several monitoring indicators related to the blockage condition of the condenser to be maintained; the index calculation model is a pre-designed predictive model based on data related to the heat exchange process in the condenser for calculating the values ​​of the monitoring indicators related to the blockage condition.

[0054] In this embodiment, the polymerization reaction occurs in a reactor. Considering that the substances exiting the reactor cannot be directly monitored, this embodiment obtains the physical property data of the substances in the reactor through simulation, i.e., the physical property data at the reactor outlet under real-time operating conditions. Since whether the heat exchanger becomes clogged during operation is related not only to the substances flowing out of the reactor but also to its own structural parameters, the technical solution of this embodiment inputs the equipment design parameters of the condenser to be maintained, the online operating parameters after preprocessing in step 204, and the physical property data at the reactor outlet into a pre-established index calculation model to calculate a set of values ​​for the monitored indexes. The equipment design parameters of the condenser to be maintained may include structural parameters such as the design area, inner diameter, and outer diameter of the condenser. The set of values ​​for the monitored indexes may include: the real-time heat load, total heat transfer coefficient, fouling factor, and heat transfer efficiency of the aforementioned condenser.

[0055] The following explains the principle of using simulation programs to obtain the physical property data of substances in a reactor: The actual polymerization process involves a wide variety of systems. By simplifying the infinite number of macromolecules into a finite number of simple chain segments, and thus reducing the infinite number of components to a finite number, a mechanistic model of the polymerization process can be established. To address the "infinite" problem in the polymerization reaction, polymers with varying chain lengths and compositions are considered to be composed of various basic units, typically a relatively small number (because for a specific polymerization system, the types of basic units are finite). This allows for the combination of an infinite number of polymeric components from a finite number of basic units, making simulation calculations possible. Free radical polymerization generally consists of elementary reactions such as chain initiation, chain propagation, chain transfer, and chain termination. During polymerization, polymer chains with different compositions and chain lengths are considered to be composed of varying numbers of chain segments, end groups, and active chains, thus reducing the number of components from infinite to finite. In reaction process calculations and material balances, the parts involving macromolecules are converted into calculations on basic units, fundamentally ensuring the material balance of the process. The chain segment is real, and basic physical properties such as specific heat capacity and heat of formation of the chain segment are based on organic theory and practice and are easy to obtain. The physicochemical properties can be given by referring to the corresponding monomer properties, and the heat of reaction is based on the concept of bond energy and can be estimated very accurately.

[0056] The process of establishing a pre-defined indicator calculation model may specifically include:

[0057] Several monitoring indicators related to the blockage condition of the condenser to be maintained were selected, and a calculation formula for each monitoring indicator was designed, resulting in several calculation formulas.

[0058] The above calculation formulas are encapsulated into a calculation software package. The input data required by the calculation software package are the parameters required for the calculation formulas of the above-mentioned monitoring indicators related to the blockage conditions. The output data of the calculation software package are the predicted values ​​of the above-mentioned monitoring indicators.

[0059] Step 208: When the value of any one of the monitored indicators in the set of monitored indicators exceeds the predetermined threshold range corresponding to any one of the monitored indicators, the copolymer attached to the inner wall of the condenser is rinsed and cleaned.

[0060] Figure 2The technical solution involves establishing a mechanistic model of the polymerization reaction process, combined with component property estimation, and then establishing a calculation model of the heat exchange process associated with the material reaction process. Through real-time production monitoring, equipment performance indicators are calculated. Combined with on-site process technology analysis, a side-stream flushing operation plan was designed, enabling intervention in blockage scenarios during production through performance monitoring. Before condenser failures affect production, this helps process and equipment engineers determine the cause of the failure, allowing for timely early intervention, confirmation of the effectiveness of intervention measures, and ensuring continuous production operation.

[0061] based on Figure 2 In addition to the method described herein, this specification also provides some specific implementation schemes of the method, which will be described below.

[0062] It should be noted that, since heat exchangers may operate continuously for a period of time in real-world scenarios, it is necessary to continuously acquire online operating parameters related to the equipment maintenance process of the condenser to be maintained in real time. Based on the steps described in the technical solution above, it is necessary to determine whether to initiate the flushing and cleaning action on the copolymer adhering to the inner wall of the condenser. In real-world scenarios, a time interval can also be preset. Whenever the preset time interval is reached, it is determined whether to remove the copolymer adhering to the inner wall of the condenser. This allows for timely predictive maintenance of the heat exchanger, effectively avoiding the phenomenon of insufficient equipment utilization due to maintenance only after severe blockage occurs. The specific size of the time interval can be flexibly set according to the actual scenario, and this solution does not impose specific limitations.

[0063] based on Figure 1 In addition to the method described herein, this specification also provides some specific implementation schemes of the method, which will be described below.

[0064] Online operating parameters related to the equipment maintenance process of the condenser to be maintained are important reference indicators for determining whether the condenser needs preventive maintenance. Therefore, in an optional embodiment, the acquisition of online operating parameters related to the equipment maintenance process of the condenser to be maintained may specifically include: setting a data acquisition interface, which is used to acquire the online operating parameters from the discrete control system corresponding to the condenser. The online operating parameters include the operating parameters of the control loop, including the temperature, pressure, flow rate of the substance flowing in the control loop, and the sampled component analysis results.

[0065] In this embodiment, the Distributed Control System (DCS) is a computer control system based on microprocessors and microcomputers, integrating computer technology, data communication technology, CRT screen display technology, and automatic control technology. Since the condenser to be maintained in this embodiment is part of an overall system producing the target polymer, its online operating parameters can be obtained through the DCS within the system. The data acquisition interface can be a designed data interface for receiving the online operating parameters collected by the DCS from the DCS.

[0066] Because the initially collected online operating parameters related to the equipment maintenance process of the condenser to be maintained may contain noise data, and some data may be missing, it is not conducive to accurately calculating the monitoring indicators related to the blockage condition of the condenser to be maintained in the indicator calculation model based on these online operating parameters as partial parameters. Therefore, in an optional embodiment, the online operating parameters can be preprocessed. Specifically, the above-mentioned preprocessing of the online operating parameters, to at least fill in the missing time-series data in the online operating parameters and remove the noise signals included in the online operating parameters, to obtain preprocessed online operating parameters, may specifically include: filling in the missing time-series data in the online operating parameters, cleaning the abnormal data in the online operating parameters, smoothing the online operating parameters, and detrending the online operating parameters to remove the offset generated when the sensor acquires the online operating parameters, to obtain the preprocessed online operating parameters.

[0067] The preceding text explained how to select several monitoring indicators related to the blockage condition of the condenser to be maintained, and designed calculation formulas for each monitoring indicator, resulting in several calculation formulas. The following section uses the calculation method for the overall heat transfer coefficient as an example to illustrate this, and the above-mentioned overall heat transfer coefficient can be calculated based on the following formula:

[0068]

[0069] Wherein, the symbol U represents the overall heat transfer coefficient, the symbol h0 represents the heat transfer coefficient outside the heat exchange tubes of the condenser mentioned above, and the symbol h i The symbol r0 represents the heat transfer coefficient inside the heat exchange tubes of the condenser described above; the symbol r0 represents the fouling factor outside the heat exchange tubes of the condenser described above; the symbol r w This represents the thermal resistance of the tube wall of the condenser described above; symbol r i The fouling factor inside the heat exchange tubes of the above-mentioned condenser; the symbol D0 represents the outer diameter of the heat exchange tubes of the above-mentioned condenser; the symbol D i This indicates the inner diameter of the heat exchange tubes in the aforementioned condenser.

[0070] Alternatively, the real-time heat load Q can be calculated using the following formula: Q = UAΔT LM F t .

[0071] Where Q represents the real-time heat load, U represents the overall heat transfer coefficient, A represents the total heat transfer area, and ΔT LM Represents the logarithmic mean temperature difference, symbol F. t This represents the correction factor.

[0072] The foregoing described the ability to rinse and clean the copolymer adhering to the inner wall of the condenser. In an optional embodiment, the rinsing and cleaning of the copolymer adhering to the inner wall of the condenser may specifically include:

[0073] The first liquid phase material flowing out of the outlet of the condenser is separated into two parts after passing through a gas-liquid separator. The second liquid phase material is divided into two parts, including a first part and a second part. The first part is discharged as a product, and the second part is returned to the inlet side of the condenser to remove the copolymer adhering to the inner wall of the condenser.

[0074] Based on the same idea, embodiments of this specification also provide apparatus corresponding to the above methods. Figure 3 The embodiments provided in this specification correspond to Figure 2 A schematic diagram of the maintenance device for a condenser in a polymerization reaction. (See diagram below.) Figure 3 As shown, the device may include:

[0075] The online operating parameter acquisition module 302 is used to acquire online operating parameters related to the equipment maintenance process of the condenser to be maintained. The condenser is used to condense the target polymer generated after polymerization in the reactor.

[0076] The parameter preprocessing module 304 is used to preprocess the above-mentioned online operating parameters to at least fill in the missing time series data in the above-mentioned online operating parameters and remove the noise signals included in the above-mentioned online operating parameters to obtain the preprocessed online operating parameters.

[0077] The module 308 for acquiring the set of values ​​of the monitored indicators is used to simulate the polymerization reaction carried out in the reactor in the simulation program to obtain the physical property data at the outlet of the reactor under real-time operating conditions; the equipment design parameters of the condenser to be maintained, the pre-processed online operating parameters, and the physical property data at the outlet of the reactor are input into a pre-established indicator calculation model to calculate the set of values ​​of the monitored indicators; wherein, the set of values ​​of the monitored indicators includes the values ​​of several monitoring indicators related to the blockage condition of the condenser to be maintained; the indicator calculation model is a pre-designed prediction model based on data related to the heat exchange process in the condenser for calculating the values ​​of the monitoring indicators related to the blockage condition.

[0078] The copolymer flushing and cleaning module 310 is used to flush and clean the copolymer adhering to the inner wall of the condenser when the value of any one of the monitored indicators exceeds the predetermined threshold range corresponding to any one of the monitored indicators.

[0079] It is understood that the modules mentioned above refer to computer programs or program segments used to perform one or more specific functions. Furthermore, the distinction between these modules does not imply that the actual program code must also be separate.

[0080] Based on the same idea, this specification also provides devices corresponding to the above methods in its embodiments. Figure 4 The embodiments provided in this specification correspond to Figure 2 A schematic diagram of the structure of a maintenance device for a condenser in a polymerization reaction. (See diagram below.) Figure 4 As shown, device 400 may include:

[0081] At least one processor 410; and,

[0082] Memory 430 communicatively connected to at least one of the aforementioned processors; wherein,

[0083] The memory 430 stores instructions 420 that can be executed by at least one processor 410.

[0084] The above instructions enable at least one processor 410 to:

[0085] Obtain online operating parameters related to the equipment maintenance process of the condenser to be maintained, which is used to condense the target polymer generated after polymerization in the reactor;

[0086] The above-mentioned online operating parameters are preprocessed to fill in the missing time series data in the online operating parameters and remove the noise signals included in the online operating parameters, so as to obtain the preprocessed online operating parameters.

[0087] The polymerization reaction carried out in the reactor is simulated in the simulation program to obtain the physical property data at the outlet of the reactor under real-time operating conditions. The equipment design parameters of the condenser to be maintained, the pre-processed online operating parameters, and the physical property data at the outlet of the reactor are input into a pre-established index calculation model to calculate a set of values ​​of the monitored indexes. The set of values ​​of the monitored indexes includes values ​​of several monitoring indexes related to the blockage condition of the condenser to be maintained. The index calculation model is a pre-designed predictive model based on data related to the heat exchange process in the condenser for calculating the values ​​of monitoring indexes related to the blockage condition.

[0088] When the value of any one of the monitored indicators exceeds the predetermined threshold range corresponding to any one of the monitored indicators, the copolymer adhering to the inner wall of the condenser is rinsed and cleaned.

[0089] Based on the same approach, embodiments of this specification also provide a computer-readable medium corresponding to the above-described methods. The computer-readable medium stores computer-readable instructions that can be executed by a processor to implement the maintenance methods for the condenser of the polymerization reaction provided in the foregoing embodiments.

[0090] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of one embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing the present invention.

[0091] Those skilled in the art will understand that the modules in the apparatus of the embodiments can be distributed in the apparatus of the embodiments as described in the embodiments, or they can be located in one or more devices different from this embodiment with corresponding changes. The modules of the above embodiments can be combined into one module, or they can be further divided into multiple sub-modules.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

[0093] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method of maintaining a condenser of a polymerization reaction, characterized by, The method comprises: obtaining online operation parameters related to the equipment maintenance process of the condenser to be maintained, the condenser being used for condensation treatment of a target polymer generated after a polymerization reaction in a reactor; preprocessing the online operation parameters to at least perform data filling on missing time series data in the online operation parameters and remove noise signals included in the online operation parameters, to obtain preprocessed online operation parameters; performing reaction simulation on the polymerization reaction in the reactor in a simulation program to obtain property data at the outlet of the reactor under real-time working conditions; inputting the equipment design parameters of the condenser to be maintained, the preprocessed online operation parameters and the property data at the outlet of the reactor into a pre-established index calculation model to calculate a set of values of monitoring indexes related to the plugging working condition of the condenser to be maintained; wherein the set of values of monitoring indexes includes values of several monitoring indexes related to the plugging working condition of the condenser to be maintained; the index calculation model is a pre-designed prediction model for calculating values of monitoring indexes related to the plugging working condition based on data related to the heat exchange process in the condenser; the set of values of monitoring indexes includes real-time heat load, total heat transfer coefficient, fouling factor and heat transfer efficiency of the condenser; when a value of any one of the set of values of monitoring indexes exceeds a predetermined threshold range corresponding to the any one monitoring index, performing flushing cleaning of the copolymer attached to the inner wall of the condenser.

2. The method of maintenance of a condenser of a polymerization reaction according to claim 1, characterized in that, The obtaining of the online operation parameters related to the equipment maintenance process of the condenser to be maintained specifically comprises: setting a data acquisition interface, the data acquisition interface being used to acquire the online operation parameters from a discrete control system corresponding to the condenser, the online operation parameters including operation parameters of a control loop, the operation parameters including temperature, pressure, flow rate of a flow-through substance in the control loop and sampling component analysis results.

3. The method of maintaining a condenser of a polymerization reaction according to claim 1, characterized in that, The preprocessing of the online operation parameters to at least perform data filling on missing time series data in the online operation parameters and remove noise signals included in the online operation parameters, to obtain preprocessed online operation parameters specifically comprises: performing data filling on missing time series data in the online operation parameters, data cleaning on abnormal data in the online operation parameters, data smoothing processing on the online operation parameters and data detrending processing on the online operation parameters to remove offsets generated when the online operation parameters are acquired by sensors, to obtain the preprocessed online operation parameters.

4. The method of maintaining a condenser of a polymerization reaction according to claim 1, characterized in that, The establishment process of the pre-established index calculation model specifically comprises: selecting several monitoring indexes related to the plugging working condition of the condenser to be maintained, and designing calculation formulas for calculating each monitoring index, to obtain several calculation formulas; The calculation software package encapsulates the calculation formulas, and required input data of the calculation software package is parameters required by the calculation formulas for calculating the monitoring indexes related to the plugging working condition, and output data of the calculation software package is predicted values of the monitoring indexes.

5. The method of maintaining a condenser of a polymerization reaction according to claim 1, characterized in that, The copolymer attached to the inner wall of the condenser is flushed and cleaned, and specifically includes: The second liquid phase material obtained after the first liquid phase material flowing out of the outlet of the condenser is subjected to gas-liquid separation treatment through a gas-liquid separator is divided into two parts including a first part and a second part, the first part is discharged as a product, and the second part enters the inlet side of the condenser as a reflux, so as to flush and clean the copolymer attached to the inner wall of the condenser.

6. A maintenance device for a condenser of a polymerization reaction, characterized in that Comprise: An online operation parameter acquisition module is configured to acquire online operation parameters related to a device maintenance process of a condenser to be maintained, the condenser being configured to condense a target polymer generated after a polymerization reaction in a reactor; A parameter preprocessing module is configured to preprocess the online operation parameters to at least perform data filling on missing time sequence data in the online operation parameters and remove noise signals included in the online operation parameters, so as to obtain preprocessed online operation parameters; A set of values of to-be-monitored indexes is acquired by performing reaction simulation on the polymerization reaction in the reactor in a simulation program to obtain physical property data at an outlet of the reactor under real-time working conditions; The device design parameters of the condenser to be maintained, the preprocessed online operation parameters, and the physical property data at the outlet of the reactor are input into a pre-established index calculation model to calculate a set of values of to-be-monitored indexes, wherein the set of values of to-be-monitored indexes includes values of a plurality of monitoring indexes related to a plugging working condition of the condenser to be maintained; the index calculation model is a pre-designed prediction model for calculating values of monitoring indexes related to the plugging working condition based on data related to a heat exchange process in the condenser; and the set of values of to-be-monitored indexes includes real-time heat load, total heat transfer coefficient, fouling factor, and heat transfer efficiency of the condenser; and a copolymer flushing and cleaning module is configured to flush and clean copolymer attached to the inner wall of the condenser when a value of any one of the to-be-monitored indexes in the set of values of to-be-monitored indexes exceeds a predetermined threshold range corresponding to the any one of the to-be-monitored indexes.

7. A maintenance device for a condenser of a polymerization reaction, characterized in that, Comprise: At least one processor; And A memory in communication connection with the at least one processor; wherein The processor stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to: Acquire online operation parameters related to a device maintenance process of a condenser to be maintained, the condenser being configured to condense a target polymer generated after a polymerization reaction in a reactor; The online operation parameters are preprocessed to at least fill data for missing time series data in the online operation parameters and remove noise signals included in the online operation parameters, to obtain preprocessed online operation parameters; The polymerization reaction performed in the reactor is simulated in a simulation program to obtain physical property data at the outlet of the reactor under real-time working conditions; the equipment design parameters of the condenser to be maintained, the preprocessed online operation parameters, and the physical property data at the outlet of the reactor are input into a pre-established index calculation model to calculate a set of values of monitoring indexes; the set of values of monitoring indexes includes values of a plurality of monitoring indexes related to the plugging working condition of the condenser to be maintained; the index calculation model is a pre-designed prediction model for calculating values of monitoring indexes related to the plugging working condition based on data related to the heat exchange process in the condenser; the set of values of monitoring indexes includes real-time heat load, total heat transfer coefficient, fouling factor, and heat transfer efficiency of the condenser; When a value of any one of the set of values of monitoring indexes exceeds a predetermined threshold range corresponding to the any one monitoring index, the copolymer attached to the inner wall of the condenser is flushed and cleaned.

8. A computer readable medium characterized by A computer readable medium having stored thereon computer readable instructions executable by a processor to implement the method for maintaining a condenser of a polymerization reaction of any one of claims 1 to 5.

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