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Chemical industrial park chemical acute poisoning risk assessment method and system

A technology for acute poisoning and chemical industry parks, applied in the fields of occupational health and occupational disease control, which can solve the problems of quantitative risk analysis, unapplied occupational health planning, layout and management of chemical industry parks, unsystematic formulation of on-site personnel treatment and on-site disposal technologies for acute chemical poisoning, undeveloped Formulate the division standard of chemical poisoning accident risk areas in chemical parks and other issues to achieve the effect of controlling occupational disease hazards, improving risk early warning and management capabilities, and preventing occupational disease hazards

Pending Publication Date: 2022-05-10
天津渤化讯创科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the field of occupational health and occupational disease control, the quantitative risk assessment and risk management techniques for acute chemical poisoning in chemical industry parks have not been systematically and comprehensively proposed; the acceptable level of acute chemical poisoning risk in chemical industry parks has not been established; On-site disposal technology; the division standard of chemical poisoning accident risk areas in chemical industry parks has not been formulated, and quantitative risk analysis has not been applied to the layout and management of occupational health planning in chemical industry parks

Method used

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  • Chemical industrial park chemical acute poisoning risk assessment method and system
  • Chemical industrial park chemical acute poisoning risk assessment method and system
  • Chemical industrial park chemical acute poisoning risk assessment method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0173] Example 1: Application Case of Diffusion Simulation of Chemical Leakage Acute Poisoning Accidents

[0174] According to the technical data, it is known that the volume of the liquid ammonia storage tank is 2m 3 , the storage capacity is 80%, placed outdoors, the working pressure is 16kg, and the design pressure is 20kg. Assuming that the ambient temperature is 20°C, an instantaneous leak occurs in which the container is destroyed, causing all the liquid to leak out.

[0175] After calculation, the leaked liquid mass W=976.48kg.

[0176] Diffusion calculation steps: judged as heavy gas-heavy gas diffusion calculation-diffusion transition point-Gaussian diffusion calculation;

[0177] 1. The percentage of liquid that evaporates directly when leaking

[0178] (G.1)

[0179] In the formula:

[0180] F——The percentage of liquid that evaporates directly when leaking;

[0181] C p ——The specific heat value of the liquid at constant pressure, in joules per kilogram Ke...

Embodiment 2

[0238] According to the technical data, it is known that the liquid chlorine gasification device, the chlorine buffer tank and the pipeline are arranged in the open air; the specification of the liquid chlorine cylinder is 1 t.

[0239] Simulate the meteorological conditions at the time of the leakage accident: the ambient temperature is 20°C, the wind speed is 4.1 m / s, the humidity is 63%, the wind speed measurement point is at a height of 10 m, the cloud coverage is 3, the atmospheric stability is B, and the temperature inversion layer does not exist .

[0240] Simulated leakage accident scenarios: complete rupture of the liquid chlorine cylinder, valve leakage; complete rupture of the chlorine buffer tank, 100% complete rupture at the connection with the pipeline, and incomplete rupture of 20% of the inner diameter of the pipeline; 100% rupture of the inner diameter of the chlorine gas delivery pipeline (rupture The hole diameter is 100% of the pipe diameter).

[0241] See...

Embodiment 3

[0244] Example 3: Application Case of Quantitative Risk Assessment for Acute Poisoning Accidents of Chemical Leakage

[0245] A fine chemical factory produces chloroformate products. Take the quantitative risk assessment of acute poisoning accidents caused by phosgene leakage in this project as an example.

[0246] Production process and raw materials

[0247] The raw and auxiliary materials used in the production process of chloroformate products mainly include coke, liquid chlorine, sodium hydroxide and various raw material alcohols. Coke and oxygen produce carbon monoxide with a purity of 99% in a carbon monoxide generator and store it in a gas cabinet. Carbon monoxide and chlorine are metered and catalyzed by activated carbon in the phosgene synthesizer to generate gaseous phosgene. Gaseous phosgene condenses into liquid phosgene and enters the liquid phosgene storage tank. The liquid phosgene is compressed into the liquefaction gasifier with compressed nitrogen for gas...

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Abstract

The invention provides a chemical industrial park chemical acute poisoning risk assessment method and system, and the method comprises the steps: S1, hazard identification: identifying accident links and chemicals causing acute poisoning due to leakage through engineering analysis and field investigation; s2, exposure evaluation: carrying out exposure evaluation by adopting computational fluid dynamics (CFD) software, and predicting the concentration and influence range of chemicals in the air; the accident emergency level is determined; s3, dose-reaction relation evaluation: establishing a dose-reaction relation model to obtain a probability variable of an acute poisoning lethal probability; and S4, risk characterization: calculating the corresponding acute poisoning lethal probability by using the calculated probability variable, and evaluating the risk acceptable level of the chemical industry park. According to the invention, a scientific basis can be provided for risk management work such as reasonable occupational health construction, planning and layout, occupational health management, emergency rescue and the like in the chemical industry park, risk early warning and management capabilities are improved, and occupational disease hazard accidents are prevented and controlled.

Description

technical field [0001] The invention belongs to the field of occupational health and occupational disease control, and in particular relates to a method and system for evaluating the risk of acute poisoning of chemicals in a chemical industry park. Background technique [0002] The chemical industry park is the product of the modern chemical industry in order to adapt to the transformation of resources or raw materials, and conform to the development trend of large-scale, intensified, optimized, internationalized operations and maximized benefits. In chemical industry parks, a large number of chemicals appear in the process of production, processing, storage, transportation, and operation as raw materials or products for industrial production. Some chemicals have inherent dangers that pose a great threat to human survival. Risk characteristics of key occupational hazards such as acute chemical poisoning accidents. [0003] In the prior art, the safety management of chemical...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26G06F30/28G06F113/08G06F119/14
CPCG06Q10/0635G06Q50/26G06F30/28G06F2113/08G06F2119/14
Inventor 黄德寅张倩李敏嫣苑成王志东殷伊琳
Owner 天津渤化讯创科技有限公司
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