CN112288322A - Method, system and equipment for establishing corrosion loops with different granularity of refining device - Google Patents

Method, system and equipment for establishing corrosion loops with different granularity of refining device Download PDF

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CN112288322A
CN112288322A CN202011301643.1A CN202011301643A CN112288322A CN 112288322 A CN112288322 A CN 112288322A CN 202011301643 A CN202011301643 A CN 202011301643A CN 112288322 A CN112288322 A CN 112288322A
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corrosion
loop
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喻灿
何笑冬
胥晓东
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Shanghai Anchor Enterprise Management Consulting Co ltd
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Abstract

The invention discloses a method, a system and equipment for establishing corrosion loops with different granularities of a refining device, and relates to the technical field of equipment management. On the basis of a process flow diagram, the method identifies the damage mechanism of each equipment pipeline and divides a corrosion loop; then, establishing a new PFD-level corrosion loop or forming a PFD-level corrosion loop diagram of the device according to the change of corrosion loop materials and damage mechanisms; establishing a new P & ID level corrosion loop or forming a P & ID level corrosion loop diagram of the device based on the risk level of the PFD level corrosion loop and whether phase change occurs; and finally, judging whether the structure or the material of the P & ID level corrosion loop has particularity, and if so, forming an SPD corrosion loop diagram of the device. The scheme solves the special conditions of local structure and material which cannot be considered by the existing P & ID level corrosion loop diagram, facilitates corrosion monitoring and point distribution on the corrosion loop and establishment of a corresponding corrosion control strategy, and ensures the integrity of the corrosion control strategy.

Description

Method, system and equipment for establishing corrosion loops with different granularity of refining device
Technical Field
The embodiment of the invention relates to the technical field of equipment management, in particular to a method, a system and equipment for establishing corrosion loops with different granularities of a refining device.
Background
In recent years, along with diversification and deterioration of crude oil processed by refining enterprises in China, especially high-sulfur and high-acid crude oil causes the problem of corrosion leakage of devices to be increased gradually, most of the problems show that the corrosion adaptability of the devices is insufficient, and especially the aspects of process corrosion resistance and equipment pipeline materials are particularly prominent. The corrosion adaptability evaluation method is carried out for evaluating whether the existing production device of an oil refining enterprise meets the processing requirement of deteriorated crude oil. The corrosion prevention management work of the device is guided by analyzing the properties of the crude oil, comparing the materials according to the material selection guide rule, calculating the theoretical corrosion rate, calculating the actual corrosion rate and the minimum bearing wall thickness, providing the relevant process corrosion prevention and corrosion prevention suggestion of the storage and transportation system, and the application of the device in the refining and chemical enterprises is mature. The corrosion loop is used as a technical means for corrosion adaptability evaluation, and can establish the corrosion loop on the device by using the similar operating temperature, the same or similar damage mechanism and the same material, thereby facilitating the looped management of corrosion. The corrosion loop is not only successfully applied in the corrosion adaptability evaluation technology, but also is a common means for many special inspection mechanisms in the process of establishing the inspection strategy when equipment pipelines with the same inspection strategy are connected to the same loop and loop management is carried out in the process of establishing the inspection strategy by utilizing RBI software. In addition, in the corrosion inspection work during overhaul, the corrosion loop is established, important risk points in the device are identified, the inspection work can be carried out on the device more pertinently on site, the establishment of the corrosion loop can be actually verified, and the established corrosion loop can be used for the looped management of daily corrosion prevention of the device while the corrosion inspection work is improved.
In the prior art, a corrosion loop establishing step and a corrosion loop establishing method are provided, the relationship between a corrosion loop in a PFD and a corrosion loop in a P & ID is defined, and pipeline equipment is grouped through the loops so as to adopt feasible anticorrosion measures, reduce the degree of risk assessment and detection range, and reduce the degree of risk assessment and detection range on the basis of ensuring the reliability and safety of a factory. But it has also disadvantages: although the existing technology considers establishing a P & ID-level corrosion loop, and the corrosion risk of pipelines such as an emptying line, a crossover line, different material connection conditions of the same pipeline and the like which are not considered in a PFD flow chart is considered in the corrosion loop of the level, for special conditions such as a slant-tee joint, local special materials such as local surfacing stainless steel and the like which cannot be shown in the P & ID flow chart, the failure possibility is more serious than that of other parts due to the particularity of the areas, and if the emphasis is not paid, serious safety accidents can be caused.
Disclosure of Invention
The embodiment of the invention provides a method, a system and equipment for establishing corrosion loops of different granularities of a refining device, aiming at the special condition that a P & ID level corrosion loop diagram cannot be considered, an SPD level corrosion loop of a local key part is established, and the integrity of a corrosion control strategy is ensured.
In order to achieve the purpose, the invention discloses the following technical scheme:
the invention provides a method for establishing corrosion loops with different granularities of a refining device, which comprises the following steps:
on the basis of a process flow diagram, identifying damage mechanisms of pipelines of each device and dividing corrosion loops;
establishing a new PFD-grade corrosion loop according to the change of corrosion loop materials and damage mechanisms, or finishing each PFD-grade corrosion loop and forming a PFD-grade corrosion loop diagram of the device;
establishing a new P & ID level corrosion loop based on the risk level of the PFD level corrosion loop and whether phase change occurs or not, or finishing each P & ID level corrosion loop and forming a P & ID level corrosion loop diagram of the device;
and judging whether the structure or the material of the P & ID level corrosion loop has specificity, and if so, forming an SPD corrosion loop diagram of the device.
Based on the above scheme, further, the establishing a new PFD-level corrosion loop or finishing each PFD-level corrosion loop and forming a PFD-level corrosion loop map of the apparatus according to the change of the corrosion loop material and the damage mechanism includes the following steps:
judging whether the material of the corrosion loop changes or not,
if yes, establishing a new PFD level corrosion loop;
if not, judging whether the damage mechanism of the corrosion loop is changed,
if yes, establishing a new PFD level corrosion loop;
if not, each PFD level corrosion loop established in the previous step is arranged, and the PFD level corrosion loops are numbered in sequence to form a PFD level corrosion loop diagram of the device.
Further, the establishing of a new P & ID-level corrosion loop or the collating of each P & ID-level corrosion loop and the forming of a P & ID-level corrosion loop map of the device based on the risk level of the PFD-level corrosion loop and whether the phase change occurs includes the following steps:
judging whether the risk grade is middle or higher based on each PFD grade corrosion loop, if not, ending;
if yes, copying the PFD level corrosion loop into the P & ID graph, and judging whether phase change occurs or not,
if yes, establishing a new P & ID level corrosion loop;
if not, the PFD level corrosion loop diagram is split, each sub-loop resets the risk level, and whether the sub-loop is in the middle-high or above risk level is judged,
if the judgment result is yes, establishing a new P & ID level corrosion loop;
if the judgment result is negative, each established P & ID level corrosion loop is sorted, and numbered in sequence to form a P & ID level corrosion loop diagram of the device.
Further, the determining whether the structure or material of the P & ID level corrosion loop has specificity, if yes, forming an SPD corrosion loop diagram of the device, including the steps of:
judging whether structural particularity exists on the basis of each P & ID level corrosion loop which is arranged,
if yes, copying the P & ID level corrosion loop into the SPD graph;
if not, judging whether each P & ID level corrosion loop has material particularity,
if not, ending;
if yes, copying the P & ID level corrosion loop into the SPD graph, establishing a new SPD level corrosion loop for the selected P & ID level corrosion loop, and then arranging each established SPD level corrosion loop to form the SPD corrosion loop graph of the device.
Preferably, on the basis of the process flow diagram, the method for identifying the damage mechanism of each equipment pipeline and dividing the corrosion loop comprises the following steps:
on the basis of a process flow diagram PFD, identifying damage mechanisms of all equipment pipelines in the process according to a material flow sequence;
and dividing the equipment pipelines with similar materials, similar operating parameters and the same corrosion mechanism into the same corrosion loop.
In another aspect, the present invention provides a system for establishing corrosion loops of different particle sizes in a refinery apparatus, the system comprising:
the PFD corrosion loop establishing unit is used for establishing a new PFD level corrosion loop according to the change of corrosion loop materials and damage mechanisms, or finishing each PFD level corrosion loop and forming a PFD level corrosion loop diagram of the device;
the P & ID corrosion loop establishing unit is used for establishing a new P & ID corrosion loop based on the risk level of the PFD level corrosion loop and whether phase change occurs or not, or arranging each P & ID corrosion loop and forming a P & ID level corrosion loop diagram of the device;
and the SPD corrosion loop establishing unit is used for establishing a new SPD level corrosion loop and forming an SPD corrosion loop diagram of the device based on the specificity of the structure or the material of the P & ID level corrosion loop.
Based on the above system, further, the system further includes:
and the corrosion loop dividing unit is used for identifying the damage mechanism of each equipment pipeline in the process according to the material flow sequence on the basis of the process flow diagram PFD, and dividing the equipment pipelines with similar materials, similar operating parameters and the same corrosion mechanism into the same corrosion loop.
In addition, the present invention also provides a computer apparatus, comprising: at least one processor, and at least one memory communicatively coupled to the processor;
the memory stores program instructions executable on the processor;
the processor calls the program instructions to execute the specific steps of the method for establishing the corrosion loop with different granularity of the refining device.
The effect provided in the summary of the invention is only the effect of the embodiment, not all the effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
according to the method for establishing the corrosion loops with different granularities of the refining device, firstly, on the basis of a process flow diagram, damage mechanism recognition is carried out on pipelines of each device and the corrosion loops are divided; then, establishing a new PFD-level corrosion loop or forming a PFD-level corrosion loop diagram of the device according to the change of corrosion loop materials and damage mechanisms; establishing a new P & ID level corrosion loop or forming a P & ID level corrosion loop diagram of the device based on the risk level of the PFD level corrosion loop and whether phase change occurs; and finally, judging whether the structure or the material of the P & ID level corrosion loop has particularity, and if so, forming an SPD corrosion loop diagram of the device. On one hand, the method solves the special conditions of local structure and material which cannot be considered by the existing P & ID level corrosion loop diagram, and corrosion monitoring and point distribution and corresponding corrosion control strategies are conveniently carried out on the corrosion loop and the integrity of the corrosion control strategies is ensured by establishing the single-tube diagram SPD level corrosion loop; on the other hand, the corresponding corrosion loop system can be formed by the method, and the corresponding corrosion loop is automatically generated by inputting the key data and judging the key factors by the software system, so that the artificial interference is reduced, and the accuracy and the working efficiency of establishing the corrosion loop are improved.
The system for establishing the corrosion loops with different granularities of the refining device and the computer equipment can realize the method for establishing the corrosion loops with different granularities of the refining device and achieve the technical effects.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic flow chart of a method for establishing corrosion loops of different granularities in a refining apparatus according to an embodiment of the present disclosure;
FIG. 2 is a flow diagram of an implementation of FIG. 1;
FIG. 3 is a diagram of a PFD level corrosion loop established in accordance with an embodiment of the present application;
FIG. 4 is a graph of a P & ID level corrosion loop established in accordance with an embodiment of the present application;
FIG. 5 is a diagram of an SPD level corrosion loop established in an embodiment of the present application;
fig. 6 is a schematic structural diagram of a system for establishing corrosion loops of different granularities of a refining apparatus according to an embodiment of the present disclosure.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
To facilitate an understanding of the technical solutions of the present invention, the following explanations and descriptions of acronyms and key terms involved in the present invention are provided.
PFD: process Flow Diagram, Process Flow Diagram;
p & ID: pipe and Instrument flow diagrams;
SPD: single Pipe Diagram, Single tube Diagram.
Fig. 1 is a schematic flow chart illustrating a method for establishing corrosion loops of different granularities of a refining apparatus according to an embodiment of the present invention.
Referring to fig. 1, the method is implemented as follows:
s1, on the basis of the process flow diagram, identifying damage mechanisms of all equipment pipelines and dividing corrosion loops;
specifically, as shown in fig. 2, in this step, for various refining apparatuses, firstly, on the basis of the process flow diagram PFD, the damage mechanism of each equipment pipeline in the process is identified according to the material flow sequence, and then the equipment pipelines of similar materials, similar operation parameters (such as temperature, pressure, etc.), and the same corrosion mechanism are divided into the same corrosion loop.
S2, on the basis of the step S1, establishing a new PFD-level corrosion loop according to the change of corrosion loop materials and damage mechanisms, or finishing each PFD-level corrosion loop and forming a PFD-level corrosion loop diagram of the device;
specifically, as shown in fig. 2, the implementation process of this step is as follows:
judging whether the material of the corrosion loop changes or not,
if yes, establishing a new PFD level corrosion loop;
if not, then judging whether the damage mechanism of the corrosion loop changes,
if yes, establishing a new PFD level corrosion loop;
if not, each PFD level corrosion loop established in the previous step is arranged, and numbered in sequence to form a PFD level corrosion loop diagram of the device.
S3, on the basis of the step S2, establishing a new P & ID level corrosion loop or finishing each P & ID level corrosion loop and forming a P & ID level corrosion loop diagram of the device based on the risk level of the PFD level corrosion loop and whether phase change occurs;
specifically, as shown in fig. 2, the implementation process of this step is as follows:
based on each PFD-level corrosion loop sorted in step S2, it is determined whether the risk level thereof is medium high or above,
if not, ending;
if yes, copying the PFD level corrosion loop into the P & ID graph, and judging whether phase change occurs or not,
if yes, establishing a new P & ID level corrosion loop;
if not, the PFD level corrosion loop diagram is split, each sub-loop resets the risk level, and whether the sub-loop is in the middle-high or above risk level is judged,
if the judgment result is yes, establishing a new P & ID level corrosion loop;
if the judgment result is negative, each established P & ID level corrosion loop is arranged and numbered in sequence to form a P & ID level corrosion loop diagram of the device.
S4, on the basis of the step S3, judging whether the structure or the material of the P & ID level corrosion loop has particularity, if so, forming an SPD corrosion loop diagram of the device;
specifically, as shown in fig. 2, the implementation process of this step is as follows:
based on each P & ID level corrosion loop arranged in step S3, judging whether structural particularity exists (such as mixing point, injection point, etc.),
if yes, copying the P & ID level corrosion loop into the SPD graph;
if not, judging whether each P & ID level corrosion loop has material particularity,
if not, ending;
if yes, copying the P & ID level corrosion loop into the SPD graph, establishing a new SPD level corrosion loop for the selected P & ID level corrosion loop, and then arranging each established SPD level corrosion loop to form the SPD corrosion loop graph of the device.
The application process of the above embodiment method is described in more detail below with reference to specific implementation cases in enterprises.
Referring to fig. 3, a PFD corrosion loop diagram is created according to the method of the above embodiment, i.e., taking into account material and damage mechanism changes in the flow. On the basis, a P & ID level corrosion loop diagram is established for corrosion loops with medium and high risks and above, as shown in FIG. 4, because the pipeline risk grades of the PFD corrosion loops are all medium and high risks, 3P & ID corrosion loops are established according to the definition. Next, given the architectural specificity of loop CC01-01-C, a new SPD level corrosion loop is established based thereon, as shown in FIG. 5. For the mixing point position, in addition to the corrosion mechanism possibly existing in the corrosion loop CC01-01, the cracking sensitivity of thermal fatigue is increased due to the large temperature difference (temperature difference 80 ℃) of the cold and hot fluids at the mixing point, and according to the thermal fatigue mechanism description in API571, if the temperature fluctuation exceeds 93 ℃, cracking can be caused, so that the temperature before material flow mixing needs to be reasonably controlled, excessive temperature fluctuation is avoided, and in addition, enough margin needs to be left to accommodate different thermal expansions when the pipeline support is designed. The function of establishing the SPD corrosion loop is to clearly show the structure trend in the loop on the loop at the level, and give out the corresponding thickness measuring point distribution position by combining with the process analysis.
FIG. 6 is a schematic diagram of a system for establishing corrosion loops of different granularities of a refining apparatus according to an embodiment of the present invention, and the system can be applied to computer equipment.
Referring to fig. 6, the system of the present embodiment includes:
the corrosion loop dividing unit is used for identifying damage mechanisms of all equipment pipelines in the process according to a material flow sequence on the basis of a process flow diagram PFD, and dividing the equipment pipelines with similar materials, similar operating parameters and the same corrosion mechanism into the same corrosion loop;
the PFD corrosion loop establishing unit is used for establishing a new PFD level corrosion loop according to the change of corrosion loop materials and damage mechanisms, or finishing each PFD level corrosion loop and forming a PFD level corrosion loop diagram of the device;
the P & ID corrosion loop establishing unit is used for establishing a new P & ID corrosion loop based on the risk level of the PFD level corrosion loop and whether phase change occurs or not, or arranging each P & ID corrosion loop and forming a P & ID level corrosion loop diagram of the device;
and the SPD corrosion loop establishing unit is used for establishing a new SPD level corrosion loop and forming an SPD corrosion loop diagram of the device based on the specificity of the structure or the material of the P & ID level corrosion loop.
Each unit in the embodiment of the system may be stored in the memory as a program module, and the processor executes the program module stored in the memory to implement the corresponding function, and for the functions implemented by each program module and the combination thereof and the achieved technical effects, reference may be made to the description of the corresponding parts in the embodiment of the method, which is not described herein again.
Based on the same inventive concept, the embodiment of the application also provides computer equipment. The computer device may include an input unit, a memory, a processor, and an output unit. The memory stores program instructions capable of running on the processor, the processor calls the program instructions to execute the method in the embodiment of the method, and the input unit, the memory, the processor and the output unit can perform data interaction with each other through the communication bus. For the functions implemented by each unit and the combination thereof, and the achieved technical effects, reference may be made to the description of the corresponding parts of the above method embodiments, which are not repeated herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it will be apparent to those skilled in the art that any modification, improvement and equivalent substitution made without departing from the principle of the present invention are included in the protection scope of the present invention.

Claims (8)

1. The method for establishing the corrosion loops with different granularity of the refining device is characterized by comprising the following steps:
on the basis of a process flow diagram, identifying damage mechanisms of pipelines of each device and dividing corrosion loops;
establishing a new PFD-grade corrosion loop according to the change of corrosion loop materials and damage mechanisms, or finishing each PFD-grade corrosion loop and forming a PFD-grade corrosion loop diagram of the device;
establishing a new P & ID level corrosion loop based on the risk level of the PFD level corrosion loop and whether phase change occurs or not, or finishing each P & ID level corrosion loop and forming a P & ID level corrosion loop diagram of the device;
and judging whether the structure or the material of the P & ID level corrosion loop has specificity, and if so, forming an SPD corrosion loop diagram of the device.
2. The method for establishing corrosion loops of different granularities of refining and chemical apparatus as claimed in claim 1, wherein said establishing new PFD grade corrosion loop or finishing each PFD grade corrosion loop and forming PFD grade corrosion loop map of apparatus according to the change of corrosion loop material and damage mechanism comprises the following steps:
judging whether the material of the corrosion loop changes or not,
if yes, establishing a new PFD level corrosion loop;
if not, judging whether the damage mechanism of the corrosion loop is changed,
if yes, establishing a new PFD level corrosion loop;
if not, each PFD level corrosion loop established in the previous step is arranged, and the PFD level corrosion loops are numbered in sequence to form a PFD level corrosion loop diagram of the device.
3. The method for establishing corrosion loops of different granularities of an refining device according to claim 2, wherein the method for establishing a new P & ID grade corrosion loop or finishing each P & ID grade corrosion loop and forming a P & ID grade corrosion loop map of the device based on the risk grade of PFD grade corrosion loop and whether phase change occurs comprises the following steps:
judging whether the risk grade is middle or higher based on each PFD grade corrosion loop,
if not, ending;
if yes, copying the PFD level corrosion loop into the P & ID graph, and judging whether phase change occurs or not,
if yes, establishing a new P & ID level corrosion loop;
if not, the PFD level corrosion loop diagram is split, each sub-loop resets the risk level, and whether the sub-loop is in the middle-high or above risk level is judged,
if the judgment result is yes, establishing a new P & ID level corrosion loop;
if the judgment result is negative, each established P & ID level corrosion loop is sorted, and numbered in sequence to form a P & ID level corrosion loop diagram of the device.
4. The method for establishing the corrosion loops with different granularities for the refining and chemical refining device according to claim 3, wherein the step of judging whether the structure or the material of the corrosion loops with the P & ID grades has particularity, if so, forming an SPD corrosion loop diagram of the device comprises the following steps:
judging whether structural particularity exists on the basis of each P & ID level corrosion loop which is arranged,
if yes, copying the P & ID level corrosion loop into the SPD graph;
if not, judging whether each P & ID level corrosion loop has material particularity,
if not, ending;
if yes, copying the P & ID level corrosion loop into the SPD graph, establishing a new SPD level corrosion loop for the selected P & ID level corrosion loop, and then arranging each established SPD level corrosion loop to form the SPD corrosion loop graph of the device.
5. The method for establishing the corrosion loops of different granularities of the refining device according to claim 1, wherein on the basis of a process flow diagram, the damage mechanism of each equipment pipeline is identified and the corrosion loops are divided, comprising the following steps:
on the basis of a process flow diagram PFD, identifying damage mechanisms of all equipment pipelines in the process according to a material flow sequence;
and dividing the equipment pipelines with similar materials, similar operating parameters and the same corrosion mechanism into the same corrosion loop.
6. The system for establishing corrosion loops of different granularities of a refining device is characterized by comprising the following components:
the PFD corrosion loop establishing unit is used for establishing a new PFD level corrosion loop according to the change of corrosion loop materials and damage mechanisms, or finishing each PFD level corrosion loop and forming a PFD level corrosion loop diagram of the device;
the P & ID corrosion loop establishing unit is used for establishing a new P & ID corrosion loop based on the risk level of the PFD level corrosion loop and whether phase change occurs or not, or arranging each P & ID corrosion loop and forming a P & ID level corrosion loop diagram of the device;
and the SPD corrosion loop establishing unit is used for establishing a new SPD level corrosion loop and forming an SPD corrosion loop diagram of the device based on the specificity of the structure or the material of the P & ID level corrosion loop.
7. The system for establishing the corrosion loop of a refinery unit with different granularities according to claim 6, further comprising:
and the corrosion loop dividing unit is used for identifying the damage mechanism of each equipment pipeline in the process according to the material flow sequence on the basis of the process flow diagram PFD, and dividing the equipment pipelines with similar materials, similar operating parameters and the same corrosion mechanism into the same corrosion loop.
8. A computer device, comprising: at least one processor, and at least one memory communicatively coupled to the processor;
the memory stores program instructions executable on the processor;
the processor calls the program instructions to execute the specific steps of the method for establishing the corrosion loop with different granularity of the refining device as set forth in any one of claims 1 to 5.
CN202011301643.1A 2020-11-19 2020-11-19 Method, system and equipment for establishing corrosion loops with different granularity of refining device Withdrawn CN112288322A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113393133A (en) * 2021-06-21 2021-09-14 北京安泰信科技有限公司 Corrosion grading method for equipment/pipeline of oil refining chemical plant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113393133A (en) * 2021-06-21 2021-09-14 北京安泰信科技有限公司 Corrosion grading method for equipment/pipeline of oil refining chemical plant

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