Complex steam system oxide skin generation analysis method, system, equipment and medium

Abstract

The invention discloses a complex steam system oxide skin generation analysis method, system and device and a medium. The method comprises the steps that actual working condition data of a complex steam system are obtained; designing an oxide skin generation experiment simulation scheme according to the actual working condition data of the complex steam system; carrying out an experiment based on the experiment simulation scheme, and acquiring an oxide skin sample and experiment simulation related data; performing feature extraction and data analysis on the experimental simulation related data to obtain key information; performing quality rating on the oxide skin sample based on the key information, evaluating the advantages and disadvantages of an oxide skin generation mechanism, and obtaining an evaluation result; and generating an improved scheme by combining a quality evaluation result and experimental simulation related data. According to the method, a three-level quality rating system is established, an improved scheme is generated, experimental simulation is highly matched with actual working conditions, traditional qualitative analysis is upgraded to quantitative research, and the problem that experimental simulation is inaccurate in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler analysis, and in particular to a method, system, equipment and medium for analyzing oxide scale formation in a complex steam system. Background Art

[0002] In industries such as energy, power generation, and petrochemicals, complex steam systems are widely present in key equipment such as supercritical boilers and steam pipelines. Under high-temperature, high-pressure, and multi-component steam environments, oxide scale forms on the surface of metal pipes, and its formation mechanism directly affects the safety and economic efficiency of the equipment. Abnormal growth or flaking of oxide scale can lead to pipe blockage, reduced heat transfer efficiency, and even safety accidents such as pipe bursts. Therefore, in-depth research on the formation mechanism of oxide scale in complex steam systems is of great significance for ensuring the stable operation of industrial equipment.

[0003] However, the existing technology has obvious deficiencies in the study of the formation mechanism of oxide scale in complex steam systems. At present, related research mainly adopts experimental observation and data analysis methods, but these methods are difficult to accurately simulate actual working conditions, and the experimental process is complicated and costly. At the same time, traditional data analysis methods are cumbersome and difficult to extract key information efficiently, resulting in low research efficiency. In addition, the existing technology lacks a systematic quality rating standard, which makes the comparability and reliability of different research results insufficient, and cannot provide a scientific and unified reference basis for industrial applications. For example, the existing literature mostly uses traditional methods such as microscopic observation and chemical analysis, which are difficult to fully reveal the formation mechanism of oxide scale, and existing patents are also mainly focused on the removal and treatment of oxide scale. There is relatively little research on the formation mechanism, and there is a lack of a systematic quality rating method, which is difficult to meet the actual needs of industrial sites. Summary of the Invention

[0004] In view of the above existing problems, the present invention is proposed.

[0005] Therefore, the present invention provides a method for analyzing oxide scale formation in a complex steam system to solve the problems of cumbersome data analysis and lack of system quality rating standards.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] In a first aspect, the present invention provides a method for analyzing scale formation in a complex steam system, comprising:

[0008] Obtain actual operating data of complex steam systems;

[0009] Designing an experimental simulation scheme for scale formation based on actual operating data of the complex steam system;

[0010] Conduct experiments based on the experimental simulation scheme, and collect oxide scale samples and experimental simulation related data;

[0011] Performing feature extraction and data analysis on the experimental simulation related data to obtain key information;

[0012] Performing a quality rating on the oxide scale sample based on the key information, evaluating the quality of the oxide scale generation mechanism, and obtaining an evaluation result;

[0013] Combining the quality assessment results with experimental simulation related data, an improvement plan is generated.

[0014] As a preferred solution of the complex steam system oxide scale formation analysis method described in the present invention, the actual operating data of the complex steam system are obtained, including steam temperature, pressure, oxygen partial pressure changes in oxidizing and reducing water conditions, pipe characteristics and historical operating data.

[0015] As a preferred embodiment of the method for analyzing oxide scale formation in a complex steam system according to the present invention, a oxide scale formation experimental simulation scheme is designed based on actual operating data of the complex steam system, including:

[0016] Construct a multi-factor experimental matrix, including temperature gradient, pressure gradient, and oxygen partial pressure gradient, and configure the experimental device to simulate the actual steam flow state;

[0017] Use sample materials from the same batch as the actual pipes, and set up a control group and an experimental group.

[0018] As a preferred embodiment of the method for analyzing oxide scale formation in a complex steam system according to the present invention, the following steps are performed: performing an experiment based on the experimental simulation scheme, collecting oxide scale samples and experimental simulation related data, and performing the following steps:

[0019] Peel off the oxide scale from the surface of the sample from the same batch as the actual pipe according to the experimental cycle. Use the collection tool to peel off the complete oxide scale and store it in a vacuum. Record the experimental temperature, pressure and cumulative time during sampling.

[0020] Real-time recording of temperature, pressure and steam flow through sensors and gas flow meters;

[0021] Use gas chromatograph to detect the volume fraction of oxygen and carbon dioxide as well as the oxygen partial pressure in steam;

[0022] The surface morphology of the oxide scale was observed by scanning equipment, and the phase diffraction pattern was obtained by X-ray diffractometer.

[0023] The beneficial effects of this preferred technical solution are: by peeling off the oxide scale from the surface of the same batch of samples according to the experimental cycle and preserving them in a vacuum, and simultaneously using multiple devices such as sensors, gas chromatographs and scanning equipment to collaboratively collect temperature, pressure, flow, composition and morphology data, the integrity of the oxide scale samples and the systematic nature of the experimental data are ensured, the actual steam operating conditions can be accurately reproduced, and multi-dimensional quantitative support is provided for the subsequent analysis of the oxide scale formation mechanism, effectively improving the accuracy of experimental simulation and data reliability.

[0024] As a preferred embodiment of the method for analyzing oxide scale formation in a complex steam system according to the present invention, feature extraction and data analysis are performed on the experimental simulation related data to obtain key information, including:

[0025] Based on thermodynamic calculations, a steam-metal reaction phase diagram was constructed to extract the critical temperature and oxygen partial pressure threshold for scale growth.

[0026] The phase diffraction patterns were quantitatively analyzed to calculate the volume fraction of the precipitated phase with different parameters and its evolution over time. The JMAK kinetic model was used to fit the precipitated phase growth curve to obtain the growth rate constant and activation energy.

[0027] Analyze the thickness, porosity, crack density and morphological characteristic parameters of the oxide scale, and calculate the oxide scale growth rate based on the sample weight loss data;

[0028] Principal component analysis was performed on multiple groups of experimental data on temperature, pressure, and oxygen partial pressure to identify the key factors affecting scale formation and their weight ratios.

[0029] The beneficial effects of this preferred technical solution are: constructing a steam-metal reaction phase diagram based on thermodynamic calculations, fitting the precipitation phase growth curve in combination with the JMAK kinetic model, and analyzing multiple sets of experimental data through principal component analysis, which can accurately extract key parameters such as the critical temperature of oxide scale growth and oxygen partial pressure threshold, quantitatively analyze the oxide scale growth mechanism, upgrade traditional qualitative analysis to quantitative expression, and identify key influencing factors such as temperature and oxygen partial pressure.

[0030] As a preferred embodiment of the method for analyzing oxide scale formation in a complex steam system according to the present invention, the oxide scale sample is quality-rated based on the key information, the quality of the oxide scale formation mechanism is evaluated, and the evaluation results are obtained, including:

[0031] Establish a three-level quality rating system, using precipitation phase stability, oxide scale density, and interface bonding strength as evaluation indicators;

[0032] The hierarchical analysis method is used to assign weights to the evaluation indicators. After verifying the rationality of the weights through matrix calculation, the comprehensive score is calculated based on the measured data of each indicator. The oxide scale quality is divided into four different levels, and a visual rating report is generated that includes a comparison of the precipitated phase distribution and morphological characteristics.

[0033] The beneficial effects of this preferred technical solution are: establishing a three-level quality rating system with precipitate phase stability, oxide scale density and interface bonding strength as the core, using hierarchical analysis method to assign weights and divide it into four quality levels, generating a visual rating report including precipitate phase distribution and morphological characteristics, solving the problem of lack of unified standards in existing technologies, making different research results comparable, and the evaluation results directly correspond to industrial operation and maintenance strategies, clarifying the priority of quality improvement, and providing a scientific basis for material optimization and operation parameter adjustment.

[0034] As a preferred solution of the complex steam system oxide scale formation analysis method described in the present invention, the improved solution includes materials, operating parameters and monitoring and maintenance strategies.

[0035] In a second aspect, the present invention provides a complex steam system scale formation analysis system, comprising: a data acquisition module for acquiring actual operating condition data of the complex steam system;

[0036] An experimental module is used to design an experimental simulation scheme for oxide scale formation based on actual operating data of the complex steam system; conduct experiments based on the experimental simulation scheme, and collect oxide scale samples and experimental simulation related data;

[0037] An analysis module is used to extract features and perform data analysis on the experimental simulation related data to obtain key information; based on the key information, the quality of the oxide scale sample is rated, the quality of the oxide scale generation mechanism is evaluated, and an evaluation result is obtained;

[0038] The solution acquisition module is used to generate an improvement solution by combining the quality assessment results and experimental simulation related data.

[0039] In a third aspect, the present invention provides an electronic device, comprising:

[0040] memory and processor;

[0041] The memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions. When the computer-executable instructions are executed by the processor, the steps of the complex steam system oxide scale formation analysis method are implemented.

[0042] In a fourth aspect, the present invention provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the complex steam system oxide scale formation analysis method.

[0043] Compared with the existing technology, the beneficial effects of the present invention are as follows: the present invention obtains the actual operating data of the complex steam system and designs a multi-factor experimental matrix, combines multiple devices to collaboratively collect oxide scale samples and experimental data, uses thermodynamic calculations, kinetic fitting and principal component analysis to extract key information, establishes a three-level quality rating system and generates improvement plans, achieves a high degree of consistency between experimental simulation and actual operating conditions, upgrades traditional qualitative analysis to quantitative research, solves the problems of inaccurate experimental simulation, cumbersome data analysis and lack of unified rating standards in the existing technology, improves the efficiency and reliability of research on the oxide scale formation mechanism, and provides a scientific basis for the safe operation and optimization of industrial equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1 The figure is a schematic diagram of the overall process of the method for analyzing oxide scale formation in a complex steam system according to one embodiment of the present invention. DETAILED DESCRIPTION

[0046] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. It is obvious that the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in this field without creative work should fall within the scope of protection of the present invention.

[0047] Example 1, reference Figure 1 , as one embodiment of the present invention, provides a method for analyzing scale formation in a complex steam system, comprising:

[0048] S100: Acquire actual operating data of complex steam systems;

[0049] S101: Design an experimental simulation scheme for scale formation based on actual operating data of a complex steam system; conduct experiments based on the experimental simulation scheme to collect scale samples and experimental simulation related data;

[0050] S102: Extract features and perform data analysis on experimental simulation related data to obtain key information;

[0051] S103: Rating the quality of the scale samples based on key information, evaluating the quality of the scale generation mechanism, and obtaining the evaluation results;

[0052] S104: Generate an improvement plan by combining the quality assessment results and experimental simulation related data.

[0053] It should be noted that the present invention obtains the actual operating data of the complex steam system, designs a multi-factor experimental matrix including temperature, pressure, and oxygen partial pressure gradients, and conducts experiments, simultaneously collects oxide scale samples and temperature, pressure, composition, morphology and other data, and then extracts key information through thermodynamic calculations, kinetic fitting and principal component analysis, and then establishes a three-level quality rating system and generates improvement plans. The existing technology has problems such as inaccurate experimental simulation and cumbersome data analysis. The method of the present invention can reproduce the actual working conditions and upgrade the research on the oxide scale formation mechanism from qualitative to quantitative. Through systematic quality rating and multi-dimensional improvement plans, the efficiency and reliability of oxide scale generation analysis are improved, providing a scientific and quantitative decision-making basis for the safe operation and optimized maintenance of industrial equipment.

[0054] Example 2, reference Figure 1 , which is an embodiment of the present invention, provides a method for analyzing oxide scale formation in a complex steam system based on the above embodiments.

[0055] In an embodiment of the present invention, the actual operating data of the complex steam system obtained in step S100 include steam temperature, pressure, oxygen partial pressure changes of oxidizing and reducing water conditions, pipe characteristics and historical operating data.

[0056] In an optional embodiment, the actual operating data of the complex steam system may also include steam flow rate, flow velocity, volume fraction of H2 and N2 in the steam, historical data on the peeling of oxide scale on the surface of the pipe, etc.

[0057] In an optional embodiment, after obtaining the actual operating data of the complex steam system, the data is preprocessed, and the preprocessing includes data cleaning, outlier removal, and standardization.

[0058] For example, by setting reasonable thresholds to identify and eliminate abnormal fluctuation data of parameters such as temperature and pressure, a normalization method is used to convert pipe characteristic data of different dimensions, such as alloy element content and pipe service time, into a unified scale to ensure the accuracy of subsequent experimental simulation and data analysis.

[0059] In an embodiment of the present invention, step S101 designs an experimental simulation scheme for scale formation based on actual operating data of a complex steam system; conducts experiments based on the experimental simulation scheme, and collects scale samples and experimental simulation related data; and further includes sub-steps A1-A5:

[0060] A1: Construct a multi-factor experimental matrix with factors including temperature gradient, pressure gradient, and oxygen partial pressure gradient. Configure the experimental device to simulate the actual steam flow state. Use sample materials from the same batch as the actual pipes, and set up a control group and an experimental group.

[0061] A2: Peel off the oxide scale from the surface of the sample from the same batch as the actual pipe according to the experimental cycle. Use a collection tool to peel off the complete oxide scale and store it in a vacuum. Record the experimental temperature, pressure and cumulative time during sampling.

[0062] A3: Real-time recording of temperature, pressure and steam flow through sensors and gas flow meters;

[0063] A4: Use gas chromatograph to detect the volume fraction of oxygen and carbon dioxide as well as the oxygen partial pressure in steam;

[0064] A5: Observe the surface morphology of the oxide scale through scanning equipment and obtain the phase diffraction pattern using X-ray diffractometer.

[0065] Specifically, the scale formation experimental simulation scheme is designed based on the actual working condition data of the complex steam system, including: based on the actual working conditions, the experimental temperature is determined to be 500-700℃ with an interval of 50℃, the pressure is determined to be 5-30MPa with an interval of 5MPa, and the oxygen partial pressure is adjusted to 10 by the CO / CO2 ratio. -8 -10 -4 Gradient range of Pa;

[0066] The flow velocity and flow rate of the experimental device are configured according to the Reynolds number and turbulence parameters of the actual steam flow to simulate the actual flow state; the experimental device uses a high-temperature and high-pressure reactor equipped with a PID temperature control system and a dynamic pressure sensor, combined with a temperature sensor, pressure sensor and gas flow meter to record data in real time, a gas chromatograph to detect steam components, and a scanning electron microscope and X-ray diffractometer to analyze the oxide scale; the experimental materials are selected from samples of the same batch and specifications as the actual pipes, and a control group and an experimental group are set up.

[0067] During the experiment, a multi-factor experimental matrix was first constructed according to the actual working conditions. Then, the oxide scale was peeled off from the surface of the sample with tweezers and preserved in a vacuum according to the cycle. The temperature, pressure, flow rate, composition, morphology and other data were simultaneously collected and preprocessed.

[0068] In an optional embodiment, the experimental simulation related data may be other gas components in the steam, such as the volume fraction of H2 and N2, sample weight loss data, oxide scale thickness, porosity, crack density, volume fraction of precipitated phase and its evolution over time, oxide scale growth rate, key factors affecting oxide scale formation and their weight ratios, etc.

[0069] In an optional embodiment, the acquisition equipment can be an electronic balance for measuring the weight loss of the sample, an ultrasonic thickness gauge for measuring the thickness of the oxide scale, an eddy current flaw detector for detecting oxide scale cracks, a nanoindenter for measuring the adhesion of the oxide scale-metal interface, thermodynamic calculation software for constructing a steam-metal reaction phase diagram, JMAK kinetic model fitting software for analyzing the precipitation phase growth curve, principal component analysis software for processing multiple sets of experimental data, etc.

[0070] In the embodiment of the present invention, step S102 performs feature extraction and data analysis on the experimental simulation related data to obtain key information, and further includes sub-steps B1-B4:

[0071] B1: Construct a steam-metal reaction phase diagram based on thermodynamic calculations to extract the critical temperature and oxygen partial pressure threshold for scale growth;

[0072] B2: Quantitative analysis of the phase diffraction patterns was performed to calculate the volume fraction of the precipitated phase with different parameters and its evolution over time. The JMAK kinetic model was used to fit the precipitated phase growth curve to obtain the growth rate constant and activation energy.

[0073] B3: Analyze the thickness, porosity, crack density and morphological characteristic parameters of the oxide scale, and calculate the oxide scale growth rate based on the sample weight loss data;

[0074] B4: Perform principal component analysis on multiple sets of experimental data on temperature, pressure, and oxygen partial pressure to identify the key factors affecting scale formation and their weight ratios.

[0075] It should be noted that the present invention selects the construction of steam-metal reaction phase diagrams, analysis of precipitation phase evolution, extraction of oxide scale morphology parameters, and identification of key influencing factors as key information because the oxide scale formation process is jointly influenced by thermodynamic conditions, phase composition, structural characteristics, and the coupling of multiple factors. Constructing a reaction phase diagram through thermodynamic calculations can clarify the critical conditions for oxide scale growth and provide thermodynamic boundaries for experimental simulations; quantitative phase analysis and kinetic fitting can reveal the essential laws of precipitation phase growth and analyze the oxide scale formation mechanism from a materials science perspective; morphological characteristic parameters and growth rate calculations can directly reflect the physical structural evolution of the oxide scale, and principal component analysis can extract core influencing factors from multivariate data to avoid interference from secondary factors.

[0076] It should also be noted that the extraction of these key information realizes a multi-dimensional analysis of the oxide scale formation mechanism, which not only upgrades the traditional qualitative research to quantitative expression, but also the growth rate constant obtained through the JMAK model can accurately describe the growth speed of the oxide scale. It can also identify key factors with high weights such as temperature and oxygen partial pressure, providing a scientific basis for subsequent quality ratings and improvement plans.

[0077] In an optional embodiment, differential scanning calorimetry can be used to obtain key information. Specifically, the thermal effect during the oxide scale formation process is measured by DSC, and the reaction enthalpy change and Gibbs free energy are calculated in combination with the thermodynamic database. The steam-metal reaction phase diagram is then modified to determine the critical temperature and oxygen partial pressure threshold for oxide scale growth.

[0078] In another optional embodiment, molecular dynamics simulation methods can also be used to obtain key information. Specifically, an atomic model of the metal-vapor interface is constructed to simulate the atomic diffusion process of oxide scale growth under different temperature and oxygen partial pressure conditions, and the kinetic parameters of the nucleation and growth of the precipitated phase are calculated.

[0079] In an embodiment of the present invention, step S102 performs a quality rating on the scale sample based on the key information, evaluates the quality of the scale generation mechanism, and obtains the evaluation result, further comprising sub-steps C1-C3:

[0080] C1: Establish a three-level quality rating system with precipitate stability, oxide scale density and interface bonding strength as evaluation indicators;

[0081] C2: The analytic hierarchy process (AHP) is used to assign weights to the evaluation indicators. After verifying the rationality of the weights through matrix calculation, a comprehensive score is calculated based on the measured data of each indicator. The oxide scale quality is divided into four different grades, and a visual rating report is generated that includes a comparison of the precipitated phase distribution and morphological characteristics.

[0082] For example, when establishing a three-level quality rating system, the stability of the precipitated phase is determined by X-ray diffraction analysis to determine the precipitated phase composition, and the proportion of the unstable phase in the total volume of the oxide scale is calculated. If the proportion is less than 5%, it is determined to be stable;

[0083] The density of oxide scale was calculated by porosity through scanning electron microscope images, and the porosity was judged to be dense when it was less than 3%;

[0084] The interfacial bonding strength was measured by nanoindentation test to measure the adhesion between the oxide scale and the metal substrate. When the adhesion was not less than 50 MPa, the bonding was judged to be good.

[0085] For example, when using the hierarchical analysis method, a judgment matrix is ​​first constructed, and the relative importance of each indicator is quantified through the 1-9 scaling method. After a consistency test, the weights of precipitate phase stability of 40%, oxide scale density of 35%, and interface bonding strength of 25% are determined. Then, a comprehensive score is calculated based on the linear weighting of the measured data of each indicator, and the oxide scale quality is divided into four levels: primary, secondary, tertiary and fourth. A visual rating report is generated, which includes chromatograms of the precipitate phase distribution and SEM images of the morphological characteristics of different grades of oxide scale.

[0086] In an optional embodiment, the evaluation index may be scale growth rate, scale thickness uniformity, anti-oxidation critical temperature, etc.

[0087] In the embodiment of the present invention, in step S104, the quality assessment results and experimental simulation related data are combined to generate an improvement plan including materials, operating parameters and monitoring and maintenance strategies;

[0088] For example, if the evaluation results show that the oxide scale quality grade is low and the precipitate phase stability is insufficient, it is recommended to add niobium to inhibit the precipitation of sigma phase; if the oxide scale density is poor, the vanadium content in the pipe is adjusted to 0.2-0.5% to promote the formation of fine dispersed precipitates to improve the oxide scale structure.

[0089] For example, when the principal component analysis shows that the temperature has a higher influence on the scale formation, the steam temperature is controlled at 580±10℃ and the oxygen partial pressure is maintained at 10 -7 -10 -6 Pa; Under reducing water conditions, the ratio of CO to CO2 was adjusted to 10:1 to inhibit the growth of unstable oxide scale.

[0090] For example, the ultrasonic thickness measurement inspection cycle is shortened for the third-level oxide scale, and eddy current flaw detection is added for the oxide scale containing easily peeled precipitated phases.

[0091] It should be noted that the present invention obtains the actual operating data of the complex steam system and designs a multi-factor experimental matrix, combines multiple devices to collaboratively collect oxide scale samples and experimental data, uses thermodynamic calculations, kinetic fitting and principal component analysis to extract key information, establishes a three-level quality rating system and generates improvement plans, and achieves a high degree of consistency between experimental simulation and actual operating conditions. It upgrades traditional qualitative analysis to quantitative research, solves the problems of inaccurate experimental simulation, cumbersome data analysis and lack of unified rating standards in the existing technology, improves the efficiency and reliability of research on the oxide scale formation mechanism, and provides a scientific basis for the safe operation and optimization of industrial equipment.

[0092] Example 3. The above is a schematic diagram of a method for analyzing oxide scale formation in a complex steam system. It should be noted that the technical solution of this system for analyzing oxide scale formation in a complex steam system is based on the same concept as the technical solution of the method for analyzing oxide scale formation in a complex steam system described above. For details not described in detail in the technical solution of the system for analyzing oxide scale formation in a complex steam system in this example, please refer to the description of the technical solution of the method for analyzing oxide scale formation in a complex steam system described above.

[0093] This embodiment also provides a complex steam system oxide scale formation analysis system, comprising:

[0094] Data acquisition module, used to obtain actual operating data of complex steam systems;

[0095] The experimental module is used to design an experimental simulation scheme for oxide scale generation based on the actual operating data of a complex steam system; conduct experiments based on the experimental simulation scheme, and collect oxide scale samples and experimental simulation related data;

[0096] The analysis module is used to extract features and analyze data related to experimental simulation to obtain key information; based on this key information, the quality of the scale samples is rated, the quality of the scale generation mechanism is evaluated, and the evaluation results are obtained;

[0097] The solution acquisition module is used to combine quality assessment results and experimental simulation related data to generate improvement solutions.

[0098] This embodiment also provides an electronic device suitable for analyzing oxide scale formation in complex steam systems, including: a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute computer-executable instructions to implement the method for analyzing oxide scale formation in complex steam systems proposed in the above embodiment.

[0099] This embodiment also provides a storage medium having a computer program stored thereon. When the program is executed by a processor, the method for analyzing oxide scale formation in a complex steam system proposed in the above embodiment is implemented.

[0100] The storage medium proposed in this embodiment and the method for analyzing oxide scale formation in a complex steam system proposed in the above embodiment belong to the same inventive concept. Technical details not fully described in this embodiment can be found in the above embodiment, and this embodiment has the same beneficial effects as the above embodiment.

[0101] Through the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented with the help of software and necessary general hardware, and of course can also be implemented by hardware. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods of various embodiments of the present invention.

[0102] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for analyzing scale formation in a complex steam system, characterized in that: include: Obtain actual operating data of complex steam systems; Designing an experimental simulation scheme for scale formation based on actual operating data of the complex steam system; Conduct experiments based on the experimental simulation scheme, and collect oxide scale samples and experimental simulation related data; Performing feature extraction and data analysis on the experimental simulation related data to obtain key information; Performing a quality rating on the oxide scale sample based on the key information, evaluating the quality of the oxide scale generation mechanism, and obtaining an evaluation result; Combining the quality assessment results with experimental simulation related data, an improvement plan is generated.

2. The method for analyzing oxide scale formation in a complex steam system according to claim 1, wherein: Acquire actual operating data of complex steam systems, including steam temperature, pressure, oxygen partial pressure changes in oxidizing and reducing water conditions, pipe material properties, and historical operating data.

3. The method for analyzing oxide scale formation in a complex steam system according to claim 2, wherein: Based on the actual operating data of the complex steam system, an experimental simulation scheme for scale formation was designed, including: Construct a multi-factor experimental matrix, including temperature gradient, pressure gradient, and oxygen partial pressure gradient, and configure the experimental device to simulate the actual steam flow state; Use sample materials from the same batch as the actual pipes, and set up a control group and an experimental group.

4. The method for analyzing oxide scale formation in a complex steam system according to claim 3, wherein: Conduct experiments based on the experimental simulation scheme to collect scale samples and experimental simulation related data, including: Peel off the oxide scale from the surface of the sample from the same batch as the actual pipe according to the experimental cycle. Use the collection tool to peel off the complete oxide scale and store it in a vacuum. Record the experimental temperature, pressure and cumulative time during sampling. Real-time recording of temperature, pressure and steam flow through sensors and gas flow meters; Use gas chromatograph to detect the volume fraction of oxygen and carbon dioxide as well as the oxygen partial pressure in steam; The surface morphology of the oxide scale was observed by scanning equipment, and the phase diffraction pattern was obtained by X-ray diffractometer.

5. The method for analyzing oxide scale formation in a complex steam system according to claim 4, wherein: Perform feature extraction and data analysis on the experimental simulation related data to obtain key information, including: Based on thermodynamic calculations, a steam-metal reaction phase diagram was constructed to extract the critical temperature and oxygen partial pressure threshold for scale growth. The phase diffraction patterns were quantitatively analyzed to calculate the volume fraction of the precipitated phase with different parameters and its evolution over time. The JMAK kinetic model was used to fit the precipitated phase growth curve to obtain the growth rate constant and activation energy. Analyze the thickness, porosity, crack density and morphological characteristic parameters of the oxide scale, and calculate the oxide scale growth rate based on the sample weight loss data; Principal component analysis was performed on multiple groups of experimental data on temperature, pressure, and oxygen partial pressure to identify the key factors affecting scale formation and their weight ratios.

6. The method for analyzing oxide scale formation in a complex steam system according to claim 5, wherein: Based on the key information, the quality of the oxide scale sample is rated, the quality of the oxide scale generation mechanism is evaluated, and the evaluation results are obtained, including: Establish a three-level quality rating system, using precipitation phase stability, oxide scale density, and interface bonding strength as evaluation indicators; The hierarchical analysis method is used to assign weights to the evaluation indicators. After verifying the rationality of the weights through matrix calculation, the comprehensive score is calculated based on the measured data of each indicator. The oxide scale quality is divided into four different levels, and a visual rating report is generated that includes a comparison of the precipitated phase distribution and morphological characteristics.

7. The method for analyzing oxide scale formation in a complex steam system according to claim 6, wherein: Improvement plans include materials, operating parameters and monitoring and maintenance strategies.

8. A complex steam system oxide scale formation analysis system, using the method according to any one of claims 1 to 7, characterized in that: include: Data acquisition module, used to obtain actual operating data of complex steam systems; An experimental module is used to design an experimental simulation scheme for oxide scale formation based on actual operating data of the complex steam system; conduct experiments based on the experimental simulation scheme, and collect oxide scale samples and experimental simulation related data; An analysis module is used to extract features and perform data analysis on the experimental simulation related data to obtain key information; based on the key information, the quality of the oxide scale sample is rated, the quality of the oxide scale generation mechanism is evaluated, and an evaluation result is obtained; The solution acquisition module is used to generate an improvement solution by combining the quality assessment results and experimental simulation related data.

9. An electronic device, characterized in that: include: A memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions, which, when executed by the processor, implement the steps of the complex steam system oxide scale formation analysis method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that It stores computer-executable instructions, which, when executed by a processor, implement the steps of the complex steam system oxide scale formation analysis method according to any one of claims 1 to 7.

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