EPA-91-FA13-03-A221

091

1,220 千元

2002/11/25

2003/12/31

蕭庭郎

空保處

國立中正大學 工具機研究中心

化學物質管理

汽車,戴奧辛

vehicle,Dioxion

林宜長、施國亮

郭春寶

蕭庭郎

(05)2720411EXT33317

deptime@ccu.edu.tw

本研究依據世界主要國家對柴油車產生之戴奧辛等排放清冊與排放因子，探討柴油車排放戴奧辛之成因，以定性方式分析戴奧辛重要指標生成物的方法取代國外研究者之定量量測方式。 本文共分三部分進行，首先從國內兩燃油公司之油品中是否含有不飽和有機氯化物，比較不同油品之含氯成份差異，提供戴奧辛生成模式之前段分析工作;其次，利用實驗方式探討柴油引擎之裂解段(由開始噴油至燃燒反應前)特性以及其裂解氣體組成隨溫度變化趨勢，得到裂解氣體之莫耳生成及平均分子量的特性曲線與其三相之含氯成份變化趨勢;最後，由裂解氣體之碳氫與碳氫氯化合物，利用質量平衡與化學平衡，針對柴油引擎的操作條件之差異，模擬燃燒生成氣體隨裂解溫度的變化趨勢，再配合實際引擎之量測值，建立戴奧辛指標生成物，尤其為有機、無機氯化物，VOC(Volatile Organic Components)，碳微粒之組成濃度。 另外，從戴奧辛的生成模式，探討隨引擎運轉情況不同，前驅物與戴奧辛之相對變化趨勢，建立柴油車之戴奧辛排放機制，期能以此研究，提供我國的柴油車對大氣之戴奧辛貢獻量，使施政者易於擬定移動性污染源之戴奧辛排放清冊與排放管制措施。

汽車,戴奧辛

0000070104.zip

8MB

[期末報告]公開完整版

2004/3/1 上午 12:00:00

ntries of the world, this study researches the reason for dioxin in diesel car exhaust. We analyzed dioxin by the qualitative method with important marked products instead of the quantitative method by the researcher in foreign. This paper is progressing in three parts. First of all, we measure the unsaturated organic chlorine content in diesel oil from the two oil company of Taiwan, and compare the difference of the two oils. That can provide the forward analysis of the formation for dioxin. For the second, we use the method of experiment to discuss the pyrolysis stage (from injection to combustion) characteristic and the pyrolysis gas component trend variety with temperature. We get the mole formation, mean molecular weight and the variety trend of chlorine content in three phase. Finally, from the carbon-hydrogen and the carbon-hydrogen-chlorine compounds in pyrolysis, we use conservation of mass and chemical equilibrium, concentrating on the variety of operating condition of diesel engine, to simulate variety trend of product with pyrolysis temperature. We identify these data as the actual measure value, and set the concentration of the marked products for Dioxin, especially inorganic or organic chloride, V.O.C. carbon particles etc. On the other hand, from the formation model of dioxin, we investigate the variety trend between the precursors and Dioxin from different operating condition of engine , and　set the accurate mechanism in diesel dioxin exhaust. We hope that this study can show the contribution of dioxin in diesel car to the air. In this way, our government can easily establish the emission inventory and emission restraints for dioxin of automobile pollution sources.

vehicle,Dioxion