Risk oriented hazard analysis method for chemical process device

A technology of risk analysis and process equipment, applied in the field of risk analysis, can solve the problems of low investment, large investment, and long time-consuming risk analysis, and achieve good technical effects, less time spent, and the effect of taking into account accuracy and engineering practicability

Inactive Publication Date: 2014-07-30
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main problem to be solved by the present invention is the time-consuming and large investment in risk analysis in chemical process equipment in the prior art. A new risk analysis method used in chemical process equipment is provided, which has timely, fast, real-time matching and The monitoring and fire disposal scheme provides the advantages of timely and low investment

Method used

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  • Risk oriented hazard analysis method for chemical process device
  • Risk oriented hazard analysis method for chemical process device
  • Risk oriented hazard analysis method for chemical process device

Examples

Experimental program
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Effect test

Embodiment 1

[0057] Acrylonitrile plant is a flammable, explosive, and highly toxic large-scale chemical plant. The production process has the characteristics of complex process, high technical requirements, and high risk. Once there is negligence in management and operation, accidents will occur , with the extension of the operating life of the device, the expansion of the production scale, the increase of the complexity of the process, and the existence of objective factors such as the aging of equipment and instruments, the safe production of the device becomes more important.

[0058] The acrylonitrile device synthesizes acrylonitrile (AN) by propylene and ammoxidation method, and the raw materials propylene, ammonia and air are reacted in a gas-solid phase fluidized bed reactor under the action of a catalyst. The catalyst bed height and density of the reactor are measured, and the pressure and differential pressure of the easily self-polymerized and blocked parts are measured by blowin...

Embodiment 2

[0066] According to the conditions described in Example 1, the technical and management safety-related measures used in the chemical plant are identified and assigned a reliability level, which is used to prove that the safety-related measures are sufficient to prevent the occurrence of the identified safety accident. The selection of reliability levels for safety-related measures is based on comprehensive consideration of manufacturer data, regulatory safety requirements, plant operating experience, etc., and results are obtained in the context of the use of risk maps.

[0067] For example, according to the EU Pressure Equipment Directive (PED), components installed on pressure vessels containing hazardous substances are classified as category IV, and the set reliability level is DC6. Examples of assigning reliability classes to valves are given in Table 6.

[0068] In this way, the discrete distribution level corresponding to the reliability is defined, just as the discrete ...

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Abstract

The invention relates to a risk oriented hazard analysis method for a chemical process device. The risk oriented hazard analysis method is mainly used for solving the problems that in the prior art, when risk oriented hazard analysis is carried out on a chemical process device, time consumption is high, and investment is large. By the adoption of the risk oriented hazard analysis method for the chemical process device, the safety integrity level is determined when a safety instrument system is taken as a protective measure; when the safety evaluation on the functions of the safety instrument system is carried out, a risk graph is used for analyzing the risks related to danger sources, a set of risk parameters are used for evaluating the risk levels, a risk level is assigned to each danger source, and an improved and extended ROHA process risk graph is used for determining the safety integrity level. The risk oriented hazard analysis method is characterized in that according to the technical scheme shown in the ROHA process risk graph (shown in figure 1), the problems are effectively solved, and the risk oriented hazard analysis method can be used for risk oriented hazard analysis of the chemical process device.

Description

technical field [0001] The invention relates to a risk analysis method used in chemical process equipment. Background technique [0002] The petrochemical industry is a high-risk industry, and the high-risk industry hopes to prevent major accidents involving hazardous substances. They also want measures to limit the impact of such accidents on people and the environment. For modern process equipment, modern safety management must be implemented, that is, starting from the concept of the system, using scientific analysis methods to identify, evaluate, and control risks, so that the process equipment can reach the best safe state, thereby ensuring personal safety, economic loss and environmental damage. Ensure long-term safe and stable operation of the device. [0003] The method of applying the system finds out in advance the conditions of various events that affect the normal operation of the process equipment, the possible consequences, and the relevant measures to elimin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/00
Inventor 李荣强
Owner CHINA PETROLEUM & CHEM CORP
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