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Method and system for evaluating explosion risk of chemical device by utilizing computer

A risk assessment and computer technology, applied in the field of risk assessment, can solve problems such as insufficient accuracy and expressiveness, inability to predict near-field explosions, and intuition, and achieve reasonable and accurate results

Inactive Publication Date: 2012-06-20
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method and system for evaluating the explosion risk of a chemical plant using a computer. The method and system are based on three-dimensional numerical simulation technology, accident statistics technology, and failure probability analysis technology. The chemical plant explosion risk assessment method and system can solve the limitations of traditional methods (such as TNT equivalent method and Multi-Energy method, etc.), which are not intuitive, have insufficient accuracy and expressiveness, and cannot perform near-field explosion prediction and three-dimensional space prediction. The problem is that the chemical plant explosion risk assessment method and system take into account the development process of the explosion accident, combined with the influence of accident probability and other factors, can comprehensively consider the chemical plant explosion risk, and the results are more reasonable and accurate

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  • Method and system for evaluating explosion risk of chemical device by utilizing computer
  • Method and system for evaluating explosion risk of chemical device by utilizing computer
  • Method and system for evaluating explosion risk of chemical device by utilizing computer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0128] Taking the evaluation of a certain coal gasification unit as an example

[0129] first step

[0130] A three-dimensional model of the chemical plant was constructed using a three-dimensional laser scanner combined with three-dimensional modeling software MICROSTATION; the local wind speed and direction probability and dominant wind direction obtained according to meteorological conditions are shown in Table 1.

[0131] Table 1

[0132]

[0133] Table 1 continued

[0134]

[0135] Draw the wind field according to Table 1 figure 2 , to get the dominant wind direction.

[0136] According to the dominant wind direction as the axis, the above wind speed and direction frequencies are reclassified, as shown in Table 2.

[0137] Table 2

[0138]

[0139] By classifying the wind field data of the wind field analysis, according to different wind field levels, select and calculate the wind speed and select different leakage points, leakage volume, leakage direction,...

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Abstract

The invention relates to a method for evaluating explosion risk of a chemical device by utilizing a computer, comprising the following steps of: firstly, calculating limiting pressure when the chemical device explodes under different scenes by utilizing field meteorological data and data obtained by ambient environment of the chemical device; secondly, calculating by utilizing the actual data in production to obtain the explosion probability that the chemical device has an explosion accident; and thirdly, forming an accumulated probability-explosion effect evaluation curve by utilizing the limiting pressure when the chemical device explodes in the first step and the explosion probability that the chemical device has the explosion accident, and finally evaluating the explosion risk of the chemical device. The method and system for evaluating the explosion risk of the chemical device provided by the invention systematacially consider an accident occurrence and development process, and the explosion risk of the chemical device can be comprehensively considered by combining with influence of factors such as an accident probability and the like, thus a result is more reasonable and accurate.

Description

technical field [0001] The present invention relates to a method and system for risk assessment, in particular to a method and system for evaluating the risk of chemical plant explosions by using a computer. Background technique [0002] With the maturity of chemical technology, the chemical industry is gradually developing towards large-scale, large-scale, and complex development. The conditions for safe production are becoming more and more stringent, and safety issues are becoming increasingly prominent. Due to its particularity, chemical equipment produces highly explosive process gas, which is prone to explosion accidents, which will not only cause casualties and heavy property losses, but also cause serious social problems. Reasonably defining the explosion risk of chemical installations is of great significance for understanding the safety level of enterprises and taking effective measures to reduce and prevent accidents. Therefore, explosion risk assessment for chem...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 赵祥迪翟良云袁纪武王正姜春明马浩然王延平
Owner CHINA PETROLEUM & CHEM CORP
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