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題名 | 汽油辛烷值減量之驗收風險評估與成本效益分析=Risk Assessment and Cost Benefit Analysis of Reducing Octane Number in Gasoline |
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作者 | 陳亮清; 鐘炳煌; 沈伯憲; Chen, Liang-ching; Chung, Ping-huang; Shen, Po-hsien; |
期刊 | 東南學報 |
出版日期 | 20110700 |
卷期 | 36 2011.07[民100.07] |
頁次 | 頁9-18 |
分類號 | 457.91 |
語文 | chi |
關鍵詞 | 辛烷值; 甲基第三丁基醚; 風險評估; 成本效益分析; Octane number; MTBE; Risk assessment; Cost-benefit analysis; |
中文摘要 | 汽油一般加入甲基第三丁基醚 (Methyl tert-butyl ether, MTBE) 添加劑來提高辛烷值以降低汽車引擎之爆震。然而MTBE 添加劑不但價格不便宜而且容易衍生地下水污染問題,因此若能降低MTBE 的添加量,除了可以降低油品的成本與油價,還能夠減少環境的污染。本研究目的即在探討調整油品中MTBE 添加量之可行性、驗收之拒收風險、以及成本效益分析。汽油辛烷值一般係採用常規之引擎試驗來檢視MTBE 添加量之辛烷值是否符合驗收規範。本研究以九五無鉛汽油為例,設定辛烷值設計值由原先95.3降為95.1時,對引擎試驗結果進行統計分析,並且評估降低MTBE 添加量相對增加之驗收風險及變更設計值之成本效益。針對辛烷值設計值為95.3的950個樣本與設計值為95.1的100個樣本進行統計分析,比較結果拒收風險增加0.00029。但成本效益分析結果,變更設計值後每年約有節省一億伍仟萬元新台幣之淨效益,約五倍左右的益本比。 |
英文摘要 | Methyl tert-butyl ether (MTBE) is generally used as an additive in gasoline to resist the engine knock in vehicle. However, it not only increases gasoline cost but also possible pollutant in groundwater. Therefore, the reduction of MTBE in gasoline is price sound and environmental protection oriented. The purpose of the study is to find out the feasibility of reducing MTBE through cost-benefit analysis, while the gasoline batch still complies within the acceptance limit of ASTM specification.The Waukesha engine was used to test the octane number of 95 Unleaded Gasoline. The reduction of MTBE in gasoline, due to octane number change from 95.3 to 95.1, has increased a risk of quality rejection at a probability equaling to 0.00029, in comparison to 950 samples’ test by Waukesha engine. Results from risk assessment and cost-benefit analysis show a saving of 150 million NT dollar, from MTBE additives reduction. And the B/C ratio over 5 is possible. Overall, partially reduction of MTBE additives in gasoline is quite feasible. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。