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Desulfurization device corrosion risk early warning method based on cloud model

A desulfurization device and risk early warning technology, applied in the direction of instruments, data processing applications, resources, etc., can solve problems such as blunt methods, carrying noise, fuzzy or random risk early warning, etc., achieve good discrimination, soft data processing methods, and improve safety The effect of management and equipment management level

Active Publication Date: 2021-12-24
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Corrosion risk early warning is based on corrosion risk assessment. However, corrosion factors are coupled with each other, information overlaps, corrosion mechanism is complex, and production process data is highly random and carries noise.
Currently used methods such as fuzzy comprehensive evaluation and probabilistic risk assessment can only simply solve the fuzzy or random problems in the risk early warning process
At the same time, the method of fuzzy comprehensive evaluation and data processing is relatively blunt, and it reacts too aggressively to production data fluctuations and noises, and it is prone to the problem of excessively high or low early warning.
Probabilistic risk assessment also relies heavily on device failure probability databases

Method used

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  • Desulfurization device corrosion risk early warning method based on cloud model
  • Desulfurization device corrosion risk early warning method based on cloud model
  • Desulfurization device corrosion risk early warning method based on cloud model

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Embodiment Construction

[0070] Next, the technical solutions in the embodiments of the present invention will be described in connection with the embodiments, and embodiments are merely described in the embodiments of the present invention, not all of the embodiments of the present invention. Based on embodiments of the present invention, all other embodiments obtained without making creative labor have not made creative labor premises.

[0071] Taking the raw material gas into the unit of the desulfurization unit of X high-containing sulfur natural gas purifier as an example, the etching risk of the portion is determined by the following steps:

[0072] Step 1: Screen an early warning indicator affecting the risk of corrosion of desulfurization devices;

[0073] Specifically: (1) acid gas load 1 mol; (2) chloride ion concentration 261 mg / L; (3) organic thermal stability salt concentration 0mg / L; (4) inorganic thermal stability salt concentration 0 mg / L; (5) Material corrosion resistance is 0.4, 31...

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Abstract

The invention discloses a cloud model-based desulfurization device corrosion risk early warning method, which introduces uncertainty analysis of a cloud model and a qualitative-to-quantitative method into an early warning model, and belongs to the technical field of crossing of safety science and engineering and oil and gas engineering. The method is characterized by comprising the following steps: firstly, screening factors influencing the corrosion risk of a desulfurization unit of the high-sulfur-content natural gas purification plant based on corrosion monitoring of the high-sulfur-content natural gas purification plant, field inspection and maintenance of purification plant devices and a corrosion coupon experiment, and establishing a corrosion risk early-warning index system; calculating an index weight by using an order relation analysis method; giving a risk threshold to each index, constructing a forward normal cloud generator by using a cloud model calculation method, and generating an index risk cloud picture by using the forward normal cloud generator; ,importing the data of the to-be-evaluated object into a forward normal cloud generator to calculate the cloud membership of each early warning index, carrying out weighted summation on the cloud membership of each early warning index to obtain a weighted cloud membership, and selecting the risk level of the maximum weighted cloud membership as the early warning risk level of the desulfurization device according to the risk maximum membership principle so the corrosion risk early warning of the desulfurization device is realized.

Description

Technical field [0001] The patent of the present invention belongs to the cross-technical field of safety engineering and petroleum gas engineering, and is specifically involved in a corrosion risk warning method for desulfurization devices. Background technique [0002] The acid gas desulfurization device has high acid gas load, high treatment amount, and the amount of amine circulation, which are easily damaged by corrosion, which has caused natural gas leakage, and seriously affects the safe production of natural gas purification plants. Therefore, the inventive risk early warning method of a desulfurization device is of great significance for the safety production of the purifier. [0003] Corrosion risk warnings are based on corrosion risk assessment, however, corrosion factors are coupled, information overlap, corrosion mechanism is complex, and the production process data is randomly strong and carries noise. The fuzzy comprehensive evaluation and probability risk assessme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/0635G06Q10/06393G06Q50/02Y04S10/50
Inventor 曾德智金龙王熙喻智明董宝军肖国清汪宙峰商剑峰林宏卿闫静
Owner SOUTHWEST PETROLEUM UNIV
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