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  • 學位論文

有機溶劑於高速空氣輸送危害性分析

Hazard Analysis for Organic Solvents Under High-Speed Air Transport

指導教授 : 何三平

摘要


由於事業單位在製程過程中,常以高速空氣輸送有機溶劑,此舉可能造成有機溶劑發生霧化現象,進而產生靜電釀成火災爆炸事故。為了避免類似災害發生,本研究以高速空氣輸送管線內之有機溶劑,並於管線末端之法拉第筒量測靜電量。於實際測試之結果發現,以高速空氣輸送有機溶劑時,靜電荷產生量會隨著輸送之空氣流速、管線長度以及有機溶劑之劑量的增加而上升。此外,當輸送管線之電阻率愈高時,愈容易產生靜電,管線中若含有雜質時,也會提高靜電量的產生。實驗中發現,當空氣濕度較高時對於靜電荷之產生有極大的影響。本研究綜整蒐集之文獻以及各項實驗結果進行分析探討,並提出有機溶劑於高速中輸送危害之改善對策、空氣輸送有機溶劑之限速估算式以及相關建議,可作為未來事業單位進行類似作業之參考,以避免火災爆炸事故發生。

並列摘要


During the production process in factories, high speed air is commonly used to transport organic solvents, which could subsequently cause the solvent to atomize, producing static electricity and resulting in a fire or explosion. To prevent related disasters, this research transported organic solvents within pipelines using high speed air, and measured the amount of static electricity at the end of the pipeline using a Faraday cylinder. Field test results showed that the amount of electrostatic charge generated was in positive correlation with air flow rate, pipe length, and the amount of solvent. Furthermore, pipelines with higher resistivity produced static electricity more easily, while impurities within the pipelines would also increase the amount produced. It was also noticed that higher ambient humidity affected the static charge to a high extent. This research analyzed and compared data from experiments as well as previous literatures and proposed improvement strategies toward the hazards of high speed transport of organic solvents. The estimation formula for flow speed limits during air transport of organic solvents was also proposed, and can act as reference for factories that utilized related processes to prevent fire and explosion accidents.

參考文獻


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