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目的通过分析企业生产涂料过程中产生的有毒有害物质状况,对其通风排毒系统进行设计,以便控制工作场所化学毒物的浓度。方法通过对现场生产流程勘察,分析生产过程中的毒物散发点,设计排风罩类型,划分通风系统,计算系统排风量等,最后根据要求选择合适的风机。结果本通风排毒系统投入使用后,对现场设置的38个固定岗位采样点、20个个体采样对象检测结果显示,其化学因素浓度均符合职业接触限值,检测合格率为100%。结论该通风系统能有效控制工作场所有毒有害物质的浓度,可作为同类行业的参考。
Objective To analyze the status of toxic and hazardous substances produced in the process of coating production by enterprises and design the ventilation detoxification system to control the concentration of chemical poisons in the workplace. Methods Through on-site production process investigation, analysis of the distribution point of poison in the production process, the design of exhaust hood type, ventilation system, calculate the system exhaust volume, and finally select the appropriate fan according to the requirements. Results After the ventilation and detoxification system was put into operation, the test results of the sampling points of 38 fixed positions and 20 individual samples set at the scene showed that the chemical concentrations of these samples met the occupational exposure limits and the pass rate was 100%. Conclusion The ventilation system can effectively control the concentration of toxic and hazardous substances in the workplace, which can be used as a reference for similar industries.