CN112347319A - Analysis method and system for corrosion failure reasons of petrochemical equipment - Google Patents
Analysis method and system for corrosion failure reasons of petrochemical equipment Download PDFInfo
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- 238000005260 corrosion Methods 0.000 title claims abstract description 365
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- 238000010835 comparative analysis Methods 0.000 claims abstract description 7
- 238000005536 corrosion prevention Methods 0.000 claims abstract description 4
- 238000012216 screening Methods 0.000 claims description 89
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- 230000008030 elimination Effects 0.000 claims description 23
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- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
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- 230000002378 acidificating effect Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
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- 150000001450 anions Chemical class 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
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- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
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Abstract
The invention discloses a method and a system for analyzing corrosion failure reasons of petrochemical equipment, and relates to the technical field of corrosion failure of equipment pipelines. The analysis method comprises the following steps: establishing a corrosion database: the corrosion database contains a plurality of corrosion types of petrochemical equipment stored in a parameter form and relevant information data of each corrosion type; analysis of corrosion failure causes: inputting the collected corrosion failure real-time information in the actual working condition into a corrosion database for comparative analysis; and determining the cause of corrosion failure. By the method and the system, corrosion reasons of equipment pipelines related to corrosion failure of refinery enterprises can be analyzed, managers or corrosion engineers are assisted to clarify corrosion mechanisms and reasons, corresponding corrosion prevention measures are taken in time to improve the corrosion reasons, the reoccurrence of similar corrosion failure is avoided, the corrosion failure risk of the device is reduced, and economic and social benefits are improved.
Description
Technical Field
The invention relates to the technical field of corrosion failure of equipment pipelines, in particular to a method and a system for analyzing corrosion failure reasons of petrochemical equipment.
Background
The corrosion failure of the equipment pipeline is a difficult problem which troubles refining enterprises for a long time, the corrosion failure mechanism and reason are clear, and the method is beneficial to actively taking targeted anticorrosion measures and effectively preventing the reoccurrence of similar failure accidents. The expertise involved in corrosion failure analysis is extensive and is typically done by experienced corrosion experts. Due to the difference of mastered information among different experts or negligence of a certain problem, the result of the analysis on the reason of the same corrosion failure problem is inevitably different.
In view of this, the invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a method and a system for analyzing corrosion failure reasons of petrochemical equipment, which can analyze the corrosion reasons of relevant corrosion failure equipment pipelines of refinery enterprises, assist managers or corrosion engineers to clarify corrosion mechanisms and reasons, timely take corresponding anticorrosion measures to improve, avoid the reoccurrence of similar corrosion failures, reduce the corrosion failure risk of devices and improve economic and social benefits.
The invention is realized by the following steps:
in a first aspect, an embodiment of the present invention provides a method for analyzing a cause of corrosion failure of petrochemical equipment, including:
establishing a corrosion database: the corrosion database contains a plurality of corrosion types of petrochemical equipment stored in a parameter form and relevant information data of each corrosion type;
analysis of corrosion failure causes: inputting the collected corrosion failure real-time information in the actual working condition into the corrosion database for comparative analysis; and determining the cause of corrosion failure.
In an alternative embodiment, the analysis of the cause of corrosion failure comprises: comparing any real-time parameter in the corrosion failure real-time information with a corresponding parameter in the related information data, eliminating the non-conforming corrosion type, and outputting a first screening result after elimination and screening;
comparing another real-time parameter in the corrosion failure real-time information with a parameter corresponding to the real-time parameter input at the stage in each corrosion type in the first screening result, eliminating the non-conforming corrosion type, and outputting the result after elimination and screening;
repeating the operation until all the real-time parameters and the related information data parameters are compared;
in an alternative embodiment, the relevant informational data includes at least one of a corrosion environment parameter, a corrosion product parameter, and a corrosion topography parameter;
preferably, the corrosive environment parameter comprises at least one of an environmental parameter, a material, a stress state and a corrosion prevention measure;
preferably, the corrosion product parameters include at least one of elemental content and chemical compounds;
preferably, the erosion topography parameters include at least one of a macro-topography, a micro-topography, and a metallographic structure of the failure site.
In an alternative embodiment, the real-time information of corrosion failure includes real-time parameters of corrosion environment, real-time parameters of corrosion products, and real-time parameters of corrosion morphology.
In an alternative embodiment, the analysis of the cause of corrosion failure comprises: the first screening result is obtained by comparing corrosion environment real-time parameters in the input corrosion failure real-time information with corrosion environment parameters in the corrosion database, eliminating inconsistent corrosion types and outputting an environment screening result after elimination screening;
continuously comparing the corrosion product real-time parameters in the input corrosion failure real-time information with the corrosion product parameters corresponding to each corrosion type in the environment screening result, eliminating the non-conforming corrosion types, and outputting the screening result of the products subjected to elimination screening;
then comparing the real-time corrosion morphology parameters in the input corrosion failure real-time information with the corrosion morphology parameters corresponding to each corrosion type in the product screening result, eliminating the non-conforming corrosion types, and outputting the product screening result after elimination and screening;
and manually inspecting and analyzing the product screening result to determine the corrosion failure reason.
In an optional embodiment, the method for analyzing the corrosion failure cause of the petrochemical equipment further comprises inputting the case for determining the corrosion failure cause into the corrosion database.
In an alternative embodiment, a plurality of said corrosion types and said associated informational data for each corrosion type are stored in parametric form within said corrosion database;
preferably, each corrosion type has a unique type number, and the related information data of each corrosion type is associated with the type number;
preferably, the parameter is in the form of an upper or lower limit.
In a second aspect, an embodiment of the present invention provides a system for analyzing a cause of corrosion failure of a petrochemical device, including a corrosion database: the system comprises a data storage module, a data processing module and a data processing module, wherein the data storage module is used for storing a plurality of corrosion types of petrochemical equipment and related information data of each corrosion type;
an analysis module: the real-time information of corrosion failure in the collected actual working conditions is input into the corrosion database for comparative analysis; and determining the cause of corrosion failure.
In an alternative embodiment, the analysis module comprises:
corrosive environment screening module: the system is used for comparing the input real-time parameters of the corrosion environment with the parameters of the corrosion environment in the corrosion database, eliminating the non-conforming corrosion types and outputting the environment screening result after elimination and screening;
corrosion product screening module: the corrosion product real-time parameter is used for comparing the input corrosion product real-time parameter with the corrosion product parameter corresponding to each corrosion type in the environment screening result, eliminating the non-conforming corrosion type, and outputting the screened product screening result after elimination;
an etching morphology screening module: the real-time parameter of the corrosion morphology is compared with the corrosion morphology parameter corresponding to each corrosion type in the product screening result, the non-conforming corrosion type is eliminated, and the product screening result after elimination and screening is output.
In an optional embodiment, the system for analyzing the corrosion failure cause of the petrochemical equipment further comprises a screening result input module, wherein the screening result input module is used for inputting the case for determining the corrosion failure cause into the corrosion database.
The invention has the following beneficial effects:
the analysis method for the corrosion failure reasons of the petrochemical equipment provided by the application standardizes the analysis process for the corrosion failure reasons of the petrochemical equipment, screens the found/determined corrosion mechanism and key parameters one by one, avoids analysis deviation caused by careless omission or insufficient experience and knowledge of an analyst, and improves the accuracy of analysis for the corrosion failure reasons; the screening process is automatically completed by the system, and an analyst only needs to input corrosion failure real-time information and review and confirm the system analysis result, so that the difficulty and labor intensity of corrosion failure analysis work are effectively reduced, and the work efficiency is greatly improved; the analysis method for the corrosion failure reasons of the petrochemical equipment can effectively accumulate corrosion failure cases of the petrochemical equipment, and with the accumulation of the failure cases and related information data and the development of image recognition and big data analysis technologies, the accuracy of the result obtained by analyzing the corrosion failure reasons by using the technology is higher and higher. The method and the system for analyzing the corrosion failure reasons of the petrochemical equipment can analyze the corrosion reasons of corrosion failure equipment pipelines of the refinery enterprises, have the advantages of comprehensive consideration, small difficulty and high result accuracy, can effectively assist managers or corrosion engineers in clarifying corrosion mechanisms and reasons, and can improve the corrosion mechanism and the corrosion mechanism by timely taking corresponding anticorrosion measures on the basis, avoid the reoccurrence of similar corrosion failures, reduce the corrosion failure risk of the device and improve the economic and social benefits.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a database in the method for analyzing the cause of corrosion failure of petrochemical equipment according to the embodiment of the present disclosure;
FIG. 2 is a flow chart illustrating a method for analyzing causes of corrosion failure of petrochemical equipment according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of an analysis system for a corrosion failure cause of a petrochemical device according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The application provides an analysis method for corrosion failure reasons of petrochemical equipment, which comprises the following steps:
s100, establishing a corrosion database.
Referring to fig. 1, the corrosion database includes a plurality of corrosion types of petrochemical equipment stored in a parameter format and information data related to each corrosion type.
The corrosion types of the petrochemical equipment are collected in advance according to the corrosion types which may occur to the petrochemical equipment in the past year, and each corrosion type is subjected to type numbering and is stored in a database. Each corrosion type corresponds to a type number. It should be understood that the corrosion types in the database and the related information data corresponding to each corrosion type are richer and finer, and the accuracy of the final screening result is higher.
Meanwhile, each corrosion type is also corresponding to relevant information data, and the relevant information data in the application comprises at least one of a corrosion environment parameter, a corrosion product parameter and a corrosion morphology parameter.
Preferably, the corrosive environment parameter comprises at least one of an environmental parameter, a material, a stress state and a corrosion prevention measure; the environmental parameters include, but are not limited to, temperature, pressure, flow rate, flow state, type of medium, phase state of medium, corrosive substance content in medium, material element content, and external environmental conditions. Preferably, the corrosion product parameter includes at least one of elemental content and chemical compound; preferably, the erosion topography parameters include at least one of a macro-topography, a micro-topography, and a metallographic structure of the failure site.
All relevant information data are also stored in the corrosion database in the form of parameters, and the parameters are stored in various forms, particularly in the form of upper limit values or lower limit values in the application. Of these relevant information data, the analysis of causes of corrosion failure includes, but is not limited to, three major categories: data related to environment, data related to corrosion products, pictures related to corrosion morphology and the like. The relevant information data of each corrosion type is associated with the type number of the corresponding corrosion type. That is, the corrosion database in the present application employs a multi-table simultaneous structure.
For example, for high temperature sulfur corrosion, the lower temperature limit associated therewith may be defined as 200 ℃ with a sulfur content greater than zero. Such as corrosion failure cases at temperatures below 200 c, high temperature sulfur corrosion may not be considered.
For example, for the corrosion type of chloride stress corrosion cracking, the sensitive material is austenitic stainless steel, etc., and other materials with low sensitivity can be disregarded.
For example, for hydrochloric acid corrosion, the environmental parameters are that the pH value of the aqueous solution is less than 7 and the aqueous solution contains chloride ions; for acid acidic water corrosion, the pH value is less than 7 and more than 4.5, and the corrosion inhibitor does not contain strong acid anions; for basic acidic water corrosion, the pH needs to be greater than 7, and so on.
For example, for the element content of a certain grade material, the minimum content requirement of the key element of the material is stored in the database according to the relevant standard requirement of the material, and when the element of the material corresponding to the corrosion failure material is lower than the minimum requirement value, the used material is judged to be not in accordance with the requirement.
The definition of the relevant parameters of the corrosion type in the database is similar.
As an illustrative example, the corrosion database employs a multi-table simultaneous structure as follows:
(1) and the corrosion type basic information table is used for storing the related text description information of each corrosion type, and the stored information is only used for outputting the related information of the corrosion type and is not basically used for retrieval comparison.
TABLE 1 basic information Table of corrosion types
(2) The corrosion environment key parameter table is used for comparing and judging to eliminate corrosion types which do not accord with corrosion conditions, and the structure is as follows, and the corrosion type number is associated with the corrosion type basic information table:
TABLE 2 Corrosion Environment Key parameters table
| Numbering | Corrosion type numbering | Parameter name | Type of criterion | Unit of parameter | Parameter value |
| 1 | ER001 | pH value | Is less than | 7 | |
| 2 | ER001 | Chloride ion content | Is greater than | ppm | 0 |
| 3 | ER002 | Temperature of | Is greater than | ℃ | 200 |
| 4 | ER002 | Acid value | Is greater than | mgKOH/Kg | 0 |
| 5 | ER003 | Temperature of | Is greater than | ℃ | 200 |
| 6 | ER003 | Sulfur content | Is greater than | ％ | 0 |
| …… | …… | …… | …… |
(3) A material basic information table for storing material basic information:
TABLE 3 material basic information Table
| Material number | Material brand | Classification | Correlation criteria | …… |
| CL01 | 00Cr19Ni10 | A1 | B1 | …… |
| CL02 | 304 | A2 | B2 | …… |
| CL03 | 316L | A3 | B3 | …… |
| CL04 | 316 | A4 | B4 | …… |
| CL05 | 321 | A5 | B5 | …… |
| …… | …… | …… | …… | …… |
(4) The material property table has the following structure, stores material properties, and can judge whether the material meets related standards according to input material information comparison:
TABLE 4 Material Properties Table
| Numbering | Material brand | Properties of | Minimum value | Maximum value | …… |
| 1 | CL01 | Cr | A1 | B1 | …… |
| 2 | CL01 | Ni | A2 | B2 | …… |
| 3 | CL01 | C | A3 | B3 | …… |
| 4 | CL01 | Mn | A4 | B4 | …… |
| 5 | CL01 | P | A5 | B5 | …… |
| 6 | CL01 | σ | A6 | B6 | |
| 6 | CL01 | σ0.2 | A6 | B6 | |
| …… | …… | …… | …… | …… |
(5) The common numbering comparison table has the following structure:
TABLE 5 Material Properties Table
| Numbering | Material brand | Unified number numbering |
| 01 | 00Cr19Ni10 | S30403 |
| 02 | 304L | S30403 |
| 03 | F304L | S30403 |
| 04 | TP304L | S30403 |
| 05 | 022Cr19Ni10 | S30403 |
| …… | …… | …… |
(6) Material classification table, structure example is as follows:
TABLE 6 materials classification table
(7) The corrosion type material classification table is a comparison table, and the structure is exemplified as follows:
TABLE 7 Corrosion type Material Classification Table
| Numbering | Classification of material corrosion | Corrosion type numbering | Corrosion grade | Correction factor | …… |
| 01 | 300L | ER002 | 7 | 1 | …… |
| 02 | 300 | ER002 | 7 | 1 | …… |
| 03 | 300MoL | ER002 | 8 | 1 | …… |
| 04 | 300Mo | ER002 | 8 | 1 | …… |
| 05 | 300Mo3L | ER002 | 9 | 1 | …… |
| 06 | CS | ER002 | 1 | 1 | …… |
| 07 | Cr1Cr3 | ER002 | 2 | 1 | …… |
| 08 | Cr5 | ER002 | 3 | 1 | …… |
| 09 | Cr7 | ER002 | 4 | 1 | …… |
| 10 | Cr9 | ER002 | 5 | 1 | …… |
| 11 | Cr12 | ER002 | 6 | 1 | …… |
| …… | …… | …… | …… | …… | …… |
(8) Corrosion products table data table, structural example is as follows:
TABLE 8 corrosion products TABLE data
| Numbering | Corrosion type numbering | Product Properties | Type of criterion | Unit of | Value of | …… |
| 1 | ER001 | A1 | B1 | C1 | D1 | …… |
| 2 | ER001 | A2 | B2 | C2 | D2 | …… |
| 3 | ER002 | A3 | B3 | C3 | D3 | …… |
| 4 | ER002 | A4 | B4 | C4 | D4 | …… |
| 5 | ER003 | A5 | B5 | C5 | D5 | …… |
| 6 | ER003 | A6 | B6 | C6 | D6 | …… |
| …… | …… | …… | …… | …… | …… | …… |
(9) The corrosion profile table, structure example is as follows:
TABLE 9 Corrosion morphology
| Numbering | Corrosion type numbering | Picture of corrosion profile | Description of erosion topography | Picture type | …… |
| 1 | ER001 | A1 | B1 | C1 | …… |
| 2 | ER001 | A2 | B2 | C2 | …… |
| 3 | ER002 | A3 | B3 | C3 | …… |
| 4 | ER002 | A4 | B4 | C4 | …… |
| 5 | ER003 | A5 | B5 | C5 | …… |
| 6 | ER003 | A6 | B6 | C6 | …… |
| …… | …… | …… | …… | …… | …… |
And S200, analyzing corrosion failure reasons.
Referring to fig. 2, the collected real-time information of corrosion failure in the actual working condition is input into a corrosion database for comparative analysis; and determining the cause of corrosion failure.
The corrosion failure reason analysis of the application is to analyze and judge the specific reason of the corrosion failure by utilizing the corrosion database provided by the application after the corrosion failure of the petrochemical equipment occurs.
The relevant information data included in the corrosion database includes, but is not limited to, at least one of a corrosion environment parameter, a corrosion product parameter, and a corrosion topography parameter. Therefore, after the petrochemical equipment is failed due to corrosion, the real-time information corresponding to the collected corrosion failure includes, but is not limited to, at least one of real-time parameters of a corrosion environment, real-time parameters of corrosion products and real-time parameters of corrosion morphology.
Through carrying out contrastive analysis with the real-time information that corrodes inefficacy and the relevant information data in the corruption database, the noncompliant corruption type is got rid of through the mode of getting rid of to this application, finally outputs the result after getting rid of. There are various ways to analyze the cause of corrosion failure, for example: comparing any real-time parameter (which can be any one of real-time parameters of corrosion environment, real-time parameters of corrosion products and real-time parameters of corrosion morphology) in the corrosion failure real-time information with corresponding parameters in the relevant information data, eliminating the non-conforming corrosion type, and outputting a first screening result after elimination and screening; comparing another real-time parameter in the corrosion failure real-time information with a parameter corresponding to the real-time parameter input at the stage in each corrosion type in the first screening result, eliminating the non-conforming corrosion type, and outputting the result after elimination and screening; and repeating the operation until the real-time parameters and the related information data parameters are compared.
More specifically, the analysis of causes of corrosion failure employed in the present application includes:
s201, comparing the input real-time parameters of the corrosion environment with the parameters of the corrosion environment in the corrosion database, eliminating the non-conforming corrosion types, and outputting an environment screening result (namely a first screening result) after elimination and screening.
The selection is earlier screened to corrosive environment in this application, because the content that corrosive environment involved is the most, and is the biggest, and is great, and the contrast is more abundant, is favorable to improving the accuracy of final result, and through having got rid of the corrosion type that does not conform to, the subsequent throughput that has reduced that the environment screening result of output can be very big.
S202, comparing the input corrosion product real-time parameters with corrosion product parameters corresponding to each corrosion type in the environment screening result, eliminating the non-conforming corrosion types, and outputting the screening result of the products subjected to elimination and screening.
According to the method and the device, the corrosion type corresponding to the corrosion product is further screened in the environment screening result, so that the range of the screening result can be further narrowed.
S203, comparing the input real-time parameters of the corrosion morphology with the corrosion morphology parameters corresponding to each corrosion type in the product screening result, eliminating the non-conforming corrosion types, and outputting the product screening result after elimination and screening;
the screening of the corrosion morphology can compare an input corrosion failure picture with a typical morphology picture corresponding to each corrosion type in a product screening result by using an image recognition technology, a list of excluded corrosion types with the similarity lower than 30 percent is obtained, and finally, a morphology comparison result (system screening result) is output according to the similarity in a sorting mode; on the other hand, the keywords describing the morphology can be used for comparison and screening, such as keywords of uniform thinning, pitting, cracking, crystal penetrating crack, crystal crack along, cleavage crack and the like. Increasing the accuracy and efficiency of screening.
And S204, manually examining and analyzing the product screening result (consulting a corrosion expert if necessary) and determining the corrosion failure reason.
And S205, inputting the case for determining the corrosion failure reason into a corrosion database. And information data are accumulated, and the screening accuracy of the system is improved.
It should be understood that in other embodiments of the present application, the corrosion products or corrosion topography or other relevant parameter information may also be analyzed first.
The analysis method for the corrosion failure reasons of the petrochemical equipment can standardize the corrosion failure analysis process, improve the corrosion failure analysis efficiency and accuracy, reduce the difficulty of the corrosion failure analysis work, and can be mastered and effectively utilized by wider equipment managers. By utilizing the method and the system, after the relevant data information of the corrosion failure problem is input, the automatic analysis of the corrosion failure reason of the refinery enterprise equipment pipeline is realized, the main reason of the corrosion failure is given, and the equipment management personnel or the corrosion engineer is assisted to determine the corrosion mechanism and make a targeted anticorrosion measure.
In addition, referring to fig. 3, the present application further provides a system for analyzing the cause of corrosion failure of petrochemical equipment, which includes a corrosion database: the system comprises a data storage module, a data processing module and a data processing module, wherein the data storage module is used for storing a plurality of corrosion types of petrochemical equipment and related information data of each corrosion type;
an analysis module: the real-time information of corrosion failure in the collected actual working conditions is input into a corrosion database for comparative analysis; determining the cause of corrosion failure;
a screening result input module: for entering cases identifying the cause of corrosion failure into the corrosion database.
Specifically, the analysis module includes:
corrosive environment screening module: the system is used for comparing the input real-time parameters of the corrosion environment with the parameters of the corrosion environment in the corrosion database, eliminating the non-conforming corrosion types and outputting the environment screening result after the elimination and screening;
corrosion product screening module: the corrosion product real-time parameter is used for comparing the input corrosion product real-time parameter with a corrosion product parameter corresponding to each corrosion type in the environment screening result, eliminating the non-conforming corrosion type, and outputting the screening result of the products subjected to elimination and screening;
an etching morphology screening module: the real-time parameter of the corrosion morphology is compared with the corrosion morphology parameter corresponding to each corrosion type in the product screening result, the non-conforming corrosion type is eliminated, and the product screening result after elimination and screening is output.
The analysis system for the corrosion failure reasons of the petrochemical equipment can be used for analyzing the corrosion failure reasons of the petrochemical equipment, and the specific analysis process and the analysis method can refer to the above.
The method and the system for analyzing the corrosion failure reason of the petrochemical equipment have the advantages that:
firstly, the analysis method for the corrosion failure reasons of the petrochemical equipment provided by the application standardizes the analysis process for the corrosion failure reasons of the petrochemical equipment, screens the found/definite corrosion mechanism and key parameters one by one, avoids analysis deviation caused by careless omission or insufficient experience and knowledge of an analyst, and improves the accuracy of analysis for the corrosion failure reasons;
secondly, the screening process is automatically completed by the system, and an analyst only needs to input corrosion failure real-time information and review and confirm the system analysis result, so that the difficulty and labor intensity of the corrosion failure analysis work are effectively reduced, and the work efficiency is greatly improved;
thirdly, the technology can effectively accumulate the corrosion failure cases of the petrochemical equipment, and with the accumulation of the failure cases and related information data and the development of image recognition and big data analysis technologies, the accuracy of the result obtained by analyzing the corrosion failure reasons by using the technology is higher and higher.
In summary, the method and the system for analyzing the corrosion failure reason of the petrochemical equipment provided by the invention can be used for analyzing the corrosion reason of the corrosion failure equipment pipeline of the refinery enterprise, the method has the advantages of comprehensive consideration, small difficulty and high result accuracy, and the technology and the system can effectively assist managers or corrosion engineers in clearly identifying the corrosion mechanism and reason, and timely take corresponding anticorrosion measures to improve the corrosion mechanism and the corrosion mechanism, avoid the reoccurrence of similar corrosion failures, reduce the corrosion failure risk of the device, and improve the economic and social benefits.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for analyzing the cause of corrosion failure of petrochemical equipment is characterized by comprising the following steps:
establishing a corrosion database: the corrosion database contains a plurality of corrosion types of petrochemical equipment stored in a parameter form and relevant information data of each corrosion type;
analysis of corrosion failure causes: inputting the collected corrosion failure real-time information in the actual working condition into the corrosion database for comparative analysis; and determining the cause of corrosion failure.
2. The method for analyzing causes of corrosion failure of petrochemical equipment as defined in claim 1, wherein the analysis of causes of corrosion failure comprises: comparing any real-time parameter in the corrosion failure real-time information with a corresponding parameter in the related information data, eliminating the non-conforming corrosion type, and outputting a first screening result after elimination and screening;
comparing another real-time parameter in the corrosion failure real-time information with a parameter corresponding to the real-time parameter input at the stage in each corrosion type in the first screening result, eliminating the non-conforming corrosion type, and outputting the result after elimination and screening;
and repeating the operation until all the real-time parameters and the related information data parameters are compared.
3. The method for analyzing causes of corrosion failure of petrochemical equipment as defined in claim 2, wherein the relevant information data comprises at least one of corrosion environment parameters, corrosion product parameters, and corrosion topography parameters;
preferably, the corrosive environment parameter comprises at least one of an environmental parameter, a material, a stress state and a corrosion prevention measure;
preferably, the corrosion product parameters include at least one of elemental content and chemical compounds;
preferably, the erosion topography parameters include at least one of a macro-topography, a micro-topography, and a metallographic structure of the failure site.
4. The method for analyzing causes of corrosion failure of petrochemical equipment as claimed in claim 3, wherein the real-time information of corrosion failure comprises real-time parameters of corrosion environment, real-time parameters of corrosion products and real-time parameters of corrosion morphology.
5. The method for analyzing the cause of corrosion failure of petrochemical equipment according to claim 4, wherein the first screening result is obtained by comparing the real-time parameters of corrosion environment in the input real-time information of corrosion failure with the parameters of corrosion environment in the corrosion database, excluding the non-compliant corrosion types, and outputting the screening result of environment after excluding the screening;
continuously comparing the corrosion product real-time parameters in the input corrosion failure real-time information with the corrosion product parameters corresponding to each corrosion type in the environment screening result, eliminating the non-conforming corrosion types, and outputting the screening result of the products subjected to elimination screening;
then comparing the real-time corrosion morphology parameters in the input corrosion failure real-time information with the corrosion morphology parameters corresponding to each corrosion type in the product screening result, eliminating the non-conforming corrosion types, and outputting the product screening result after elimination and screening;
and manually inspecting and analyzing the product screening result to determine the corrosion failure reason.
6. The method for analyzing the cause of corrosion failure in petrochemical equipment according to claim 5, further comprising inputting a case for determining the cause of corrosion failure into the corrosion database.
7. The method for analyzing causes of corrosion failure of petrochemical equipment according to any one of claims 1 to 6, wherein a plurality of corrosion types and the associated information data for each corrosion type are stored in the corrosion database in a parametric form;
preferably, each corrosion type has a unique type number, and the related information data of each corrosion type is associated with the type number;
preferably, the parameter is in the form of an upper or lower limit.
8. A system for analyzing the cause of corrosion failure of petrochemical equipment is characterized by comprising a corrosion database: the system comprises a data storage module, a data processing module and a data processing module, wherein the data storage module is used for storing a plurality of corrosion types of petrochemical equipment and related information data of each corrosion type;
an analysis module: the real-time information of corrosion failure in the collected actual working conditions is input into the corrosion database for comparative analysis; and determining the cause of corrosion failure.
9. The system for analyzing causes of corrosion failure of petrochemical equipment according to claim 8, wherein the analysis module comprises:
corrosive environment screening module: the system is used for comparing the input real-time parameters of the corrosion environment with the parameters of the corrosion environment in the corrosion database, eliminating the non-conforming corrosion types and outputting the environment screening result after elimination and screening;
corrosion product screening module: the corrosion product real-time parameter is used for comparing the input corrosion product real-time parameter with the corrosion product parameter corresponding to each corrosion type in the environment screening result, eliminating the non-conforming corrosion type, and outputting the screened product screening result after elimination;
an etching morphology screening module: the real-time parameter of the corrosion morphology is compared with the corrosion morphology parameter corresponding to each corrosion type in the product screening result, the non-conforming corrosion type is eliminated, and the product screening result after elimination and screening is output.
10. The system for analyzing the cause of corrosion failure in petrochemical equipment according to claim 8, further comprising a screening result input module for inputting a case for determining the cause of corrosion failure into the corrosion database.
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