請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/5134
標題: 加油站油氣回收設備回收效率之評估
The Assessment on the Efficiency of Vapor Recovery System in Gas Station
作者: 鄭育宗
Cheng, Yu-Tsung
關鍵字: Gas Station
加油站
membrane-adsorption
vapor recovery system
薄膜吸附
油氣回收系統
出版社: 環境工程學系所
引用: CARB (California Environmental Protection Agency Air Resource Board), ”Gasoline Facilities Vapor Recovery Phase 1 & 2,” California (1994). CARB (California Environmental Protection Agency Air Resource Board), ”Certification and Test Procedures for Vapor Recovery System,” California (1996). California Environmental Protection Agency Air Resource Board, Vapor Recovery Test procedures CARB TP - 201.5:Air to Liquid Volume Ratio , California (2001). California Environmental Protection Agency Air Resource Board, Vapor Recovery Test procedures CARB TP-201.3:Determination of 2 Inch WC Static Pressure Performance of Vapor Recovery Systems of Dispensing Facilities ,California (1999). California Environmental Protection Agency, Vapor Recovery Test Procedures CARB TP-201.4:Determination of Dynamic Pressure Performance of Vapor Recovery Systems of Dispensing Facilities, California (2000). Hassel, D. and D. Plettau, “Suitability Testing of the Regas Vapour Recovery System,” TUV Rheinland Safety & Environmental Protection GmbH Report , Germany (1993). Hassel, D and H. Plettau,“ Suitability Testing of a Vapour Recovery System with a VACONOVENT Unit,” TUV Rheinland Safety & Environmental Protection GmbH Report , Berlin (1998). Kllard, O. and J. Wind, “Membrane Based Vapor Recovery at Petrol Stations,”GKSS Forschungszentrum Geesthacht GmbH, Institute of Chemistry , Germany (2003). Ohlrogge, K., K. Stürken, “The Separation of Organic Vapors from Gas Streams by Means of Membranetechnology Membrane Technology in the Chemical Industry,” Munich (2001). Pidoll, U.,“ Safety investigations concerning the refuelling of motor cars with gasoline at higher gas recovery rates,” Braunschweig (1998). Poddar, T. K., S. Majumdar and K. K. Sirkar, “Membrane-based Absorption of VOCs from a Gas Stream,” Germany (1996). 工研院工安衛中心(工業技術研究院工業安全衛生技術發展中心),「加油站設置真空輔助式油氣回收設備補助申請之檢測及審查執行計畫」,行政院環境保護署期末報告,EPA-88-FA32-03-1075,台北(1999)。 行政院環境保護署,「89年度加油站設置真空輔助式油槍油氣回設備補助申請之檢測及審查執行計畫」期末報告,EPA-89-FA12-03-21,台北(2000)。 行政院環境保護署,「加油站設置真空輔助式油槍油氣回收設備功能抽測計畫」期末報告,EPA-92-FA12-03-A012,台北(2004)。 行政院環境保護署,「調查加油站周界排放之揮發性有機污染物濃度計畫」期末報告,EPA-90-FA12-03-212,台北(2001)。 行政院環境保護署,「北區加油站空氣污染防制技術研討會」,台北(2001)。 美國加州空氣資源委員會油氣回收網址http://www.arb.ca.gov/vapor/vapor.htm 經濟部能源委員會網站-能源相關統計 http://www.moeaec.gov.tw 賴以賢、李王永泉,「空氣污染防制工程」,滄海書局 (2002)。 Mulder,M.著,李琳譯,「膜技術基本原理」,北京,清華大學出版社 (1999)。 劉希平、賈文節,「油氣回收對加油站員工有機氣體曝露之影響」,曝露評估技術研討會,台北(1997)。
摘要: 本研究主要探討加油站增設VACONOVENT薄膜吸附式油氣回收系統的回收效率,此回收系統係將油槽中過多油氣經薄膜吸附後,再脫附分離油氣回流至油槽中,此方式在油氣回收系統可提高加油量與抽氣量比值(簡稱A/L值)至1.5,不但能有效降低油氣排放且可減少空氣污染。為了評估VACONOVENT薄膜吸附式油氣回收系統回收效率及油氣VOCs排放減量,本研究進行加油站周界VOCs濃度及提升加油槍油氣回收效率的量測,以瞭解加油過程中逸散之油氣VOCs污染問題。 油氣經薄膜處理不僅可有效回收儲存油氣之外,因揮發性高分子量的油氣成份進入薄膜脫附系統,使油氣在薄膜罐中進行脫附分離,以脫附99 % 效率以上,可有效率的被分解為碳氫化合物及空氣,將以液態汽油及高濃度油氣的型態回流到油槽,僅容許釋放乾淨的空氣排放,此實驗的最終目的是將可回收油氣封存在儲油槽中,減少加油站VOCs油氣逸散量,提升現階段油氣回收系統的效率。 在加油槍A/L回收率實際測試方面,在有裝設真空輔助式油氣回收系統之回收率1:1,與薄膜吸附式油氣回收系統回收率1:1.5,測試結果顯示出裝設真空輔助式油氣回收系統可以減少75 %的油氣逸散,薄膜吸附式油氣回收系統回收率可以減少95 %的油氣逸散至環境中。 實驗進行九天,選擇在下班加油尖峰時段,在加油站的『加油泵島』及『加油站周界』設置八個採樣點,在二個不同高度採樣,由實驗結果顯示,比較真空輔助式油氣回收系統與增設VACONOVENT薄膜吸附式油氣回收系統兩種方式,以取樣高度、取樣時段、取樣位置等因素加以分析,在尖峰時段、離峰時段以不同取樣高度由『加油泵島』及『加油站周界』VOCs之濃度隨尖峰時段、離峰時段VOCs濃度值有明顯減量效果,薄膜吸附式油氣回收在『加油泵島』VOCs濃度減量可達45 %。綜合研究的結果,本論文為國內首次評估加油站第二階段油氣回收系統增設VACONOVENT薄膜吸附式油氣回收系統之效率,所量測數據可提供改善加油站揮發性有機物逸散問題的參考資料。
This research mainly investigates the improvement of vapor recovery efficiency by adding a VACONOVENT membrane-adsorption vapor recovery system to the traditional vacumm type system. The membrane-adsorption system can collect the excessive gasoline vapor in the fuel tank and recycle back into liquid gasoline. Such system can achieve A/L values up to 1.5. Therefore the membrane-adsorption system not only effectively reduces the vapor discharge but also improves the vapor discharge problem. In order to evaluate the recovery efficiency, an experiment was conducted to measure the concentrations of VOCs at various locations in a gasoline station and the A/L values under the conditions with and without the VACONOVENT membrane-adsorption system. The purpose of these measurements is to understand the VOCs pollution problems during the refueling process. The gasoline vapors are not only effectively recycled and the adsorbed vapors are stored in the membrane. Because the volatile macromolecules are absorbed by the membrane unit and then followed by the desorption process in the membrane pot. The percentages of desorption can reach to 99%. The adsorbed vapors are decomposed to hydrocarbon and air and then flow back to the fuel tank as the liquid gasoline. Only the clean air is allowed to be discharged so that the VOCs pollution is reduced. In the actual test of the A/L recovery efficiencies, the recovery efficiency is 1: 1 for the traditional vacuum system and 1:1.5 for the system adding the membrane-adsorption vapor recovery unit. The results show that the system with the vacuum recovery unit can reduce 75% vapor discharge and the membrane-adsorption recovery system can reduce 95% vapor discharge. The measurements were conducted at eight locations with two various heights from ground in a gas station during the heavy traffic hours and the regular hours. The experiments were performed for nine days. With the additional VACONOVENT membrane-adsorption vapor recovery system, the reduction rate of VOCs concentrations near the gasoline refilling location can reach to 45%. In conclusion, this research evaluates the improved vapor recovery efficiency by adding the VACONOVENT membrane-adsorption gasoline vapor recovery system to the traditional vacumn system. The results provide the useful data and information for improving the air pollution problem in the gas stations.
URI: http://hdl.handle.net/11455/5134
其他識別: U0005-1008200621503000
文章連結: http://www.airitilibrary.com/Publication/alDetailedMesh1?DocID=U0005-1008200621503000
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