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Method for evaluating thermal runaway risk degree of chemical process

A process and risk technology used in assessing the risk of thermal runaway in chemical processes

Active Publication Date: 2019-11-05
NANJING UNIV OF TECH
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  • Description
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  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a method for assessing the risk of thermal runaway in a chemical process in response to the current demand for the risk of thermal runaway in a chemical process. The combination of risk and reaction runaway risk forms a quantitative assessment method of thermal runaway risk in chemical process, so as to comprehensively reflect the impact of substances and reactions on the risk of thermal runaway in process

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  • Method for evaluating thermal runaway risk degree of chemical process
  • Method for evaluating thermal runaway risk degree of chemical process
  • Method for evaluating thermal runaway risk degree of chemical process

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Embodiment Construction

[0064] Attached below figure 1 And specific embodiment, the method of the present invention is described in detail.

[0065] Refer to attached figure 1 , the inventive method comprises the steps:

[0066] Step 1. Collect thermal hazard data of raw materials, products and reaction process;

[0067] Obtain the thermal decomposition data of raw materials and products involved in the process, as well as the thermal runaway hazard characteristic data of the reaction process through experimental tests or literature review, so as to provide data support for subsequent evaluation;

[0068] Step 2, determine the material coefficient MF;

[0069] The material coefficient MF is determined by the starting decomposition temperature of the material (T onset ) and the maximum exothermic power (MPD), which reflect the risk of thermal decomposition of the substance. T onset It refers to the temperature at which a substance begins to decompose. The lower the temperature, the higher the po...

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Abstract

The invention belongs to the field of chemical process risk assessment, and relates to a method for evaluating the thermal runaway risk degree of the chemical process. The method comprises the following steps: 1) collecting thermal risk data of raw materials, products and reaction processes; 2) determining a substance coefficient MF, wherein the substance coefficient MF is determined by the initial decomposition temperature Tonset and the maximum exothermic power MPD of the substance; 3) determining a reaction thermal runaway risk index RI, wherein RI is the product of the consequence severityS and the possibility P of the runaway reaction; and 4) calculating a thermal runaway risk index ITHI of the technological process, and determining a thermal runaway risk grade of the technological process according to an ITHI thermal runaway risk grading standard. Substance thermal risks and reaction runaway risks are combined. A quantitative evaluation method for the thermal runaway risk of thechemical technological process is provided.

Description

technical field [0001] The invention belongs to the field of risk assessment of chemical process, and relates to a method for evaluating the risk of thermal runaway in chemical process. Background technique [0002] Exothermic reaction is a very common type of reaction in the chemical and pharmaceutical industry. If the energy released during the reaction process is not effectively controlled, it may cause thermal runaway accidents in the process. Correct recognition of hazards is the premise of controlling hazards. Therefore, pre-assessment of thermal runaway hazards in the process is an important means to understand and take corresponding measures to control hazards. How to comprehensively and accurately assess the risk of thermal runaway in the process is an important problem that needs to be solved urgently in the chemical industry. [0003] The current research on the risk of thermal runaway mainly focuses on the experiments and simulations of the risk of thermal runaw...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/04
CPCG06Q10/0635G06Q50/04Y02P90/30
Inventor 蒋军成魏丹倪磊潘勇
Owner NANJING UNIV OF TECH
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