title: Evaporation characteristics of ETBE-blended gasoline.
abstract: To reduce greenhouse gas emissions, which contribute to global warming, production of gasoline blended with ethyl tert-buthyl ether (ETBE) is increasing annually. The flash point of ETBE is higher than that of gasoline, and blending ETBE into gasoline will change the flash point and the vapor pressure. Therefore, it is expected that the fire hazard caused by ETBE-blended gasoline would differ from that caused by normal gasoline. The aim of this study was to acquire the knowledge required for estimating the fire hazard of ETBE-blended gasoline. Supposing that ETBE-blended gasoline was a two-component mixture of gasoline and ETBE, we developed a prediction model that describes the vapor pressure and flash point of ETBE-blended gasoline in an arbitrary ETBE blending ratio. We chose 8-component hydrocarbon mixture as a model gasoline, and defined the relation between molar mass of gasoline and mass loss fraction. We measured the changes in the vapor pressure and flash point of gasoline by blending ETBE and evaporation, and compared the predicted values with the measured values in order to verify the prediction model. The calculated values of vapor pressures and flash points corresponded well to the measured values. Thus, we confirmed that the change in the evaporation characteristics of ETBE-blended gasoline by evaporation could be predicted by the proposed model. Furthermore, the vapor pressure constants of ETBE-blended gasoline were obtained by the model, and then the distillation curves were developed.
authors: National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan. Electronic address: okamoto@nrips.go.jp.
authors: Katsuhiro
authors: K
authors: Okamoto
authors: Yamanashi Prefectural Police H.Q., 312-4 Kubonakajima, Isawa-cho, Usui, Yamanashi 406-0036, Japan.
authors: Muneyuki
authors: M
authors: Hiramatsu
authors: Metropolitan Police Department, 2-1-1 Kasumigaseki, Chiyoda-ku, Tokyo 100-8929, Japan.
authors: Tomonori
authors: T
authors: Hino
authors: Metropolitan Police Department, 2-1-1 Kasumigaseki, Chiyoda-ku, Tokyo 100-8929, Japan.
authors: Takuma
authors: T
authors: Otake
authors: National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan.
authors: Takashi
authors: T
authors: Okamoto
authors: National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan.
authors: Hiroki
authors: H
authors: Miyamoto
authors: National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan.
authors: Masakatsu
authors: M
authors: Honma
authors: National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa, Chiba 277-0882, Japan.
authors: Norimichi
authors: N
authors: Watanabe
mesh_terms: D005019:Ethyl Ethers / Q000737:chemistry*; D005742:Gasoline / Q000706:statistics & numerical data*; D010420:Pentanes / Q000737:chemistry*; D014050:Toluene / Q000737:chemistry*; D014835:Volatilization
chemical_list: D005019:Ethyl Ethers; D005742:Gasoline; D010420:Pentanes; D014050:Toluene; C098546:ethyl tert-butyl ether; C033353:pentane
keywords: Ethyl tert-buthyl ether; Evaporation model; Flash point; Gasoline; Vapor pressure