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首页> 外文期刊>Journal of Energy Engineering >Vapor Pressure and Octane Numbers of Ternary Gasoline-Ethanol-ETBE Blends
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Vapor Pressure and Octane Numbers of Ternary Gasoline-Ethanol-ETBE Blends

机译：三元汽油-乙醇-ETBE共混物的蒸气压和辛烷值

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摘要

The objective of this study was to examine key gasoline properties, such as octane rating and volatility of ternary blends with ethanol and ethyl-tert-butyl-ether (ETBE). Ethanol and ETBE were added in various concentrations in specific refinery gasoline pool components, so a total of 30 gasoline-ethanol-ETBE samples were prepared and tested. Vapor pressure and octane numbers [research octane number (RON) and motor octane number (MON)] were determined for the mixtures containing 0.9-5.5% v/v ethanol and 2.0-9.8% v/v ETBE. Ethanol was always considered a valuable component for refinery gasoline pool due to its good antiknock characteristics. However, its azeotropic behavior in gasoline is considered as a drawback for the vapor pressure of the blend. On the other hand, the use of ETBE in gasoline increases the octane number and lowers the vapor pressure, thus allowing refinery blenders to use a higher vapor pressure base gasoline in the final fuel formulation. Experimental results indicated that ethanol concentration up to 5% v/v in the gasoline formulation increased the vapor pressure of the mixture. The addition of both ethanol and ETBE in the base gasoline resulted in ternary mixtures which smoothed the behavior of the vapor pressure while they acted as excellent octane improvers.
机译：这项研究的目的是研究关键汽油特性，例如辛烷值和与乙醇和乙基叔丁基醚（ETBE）的三元混合物的挥发性。在特定的炼油厂汽油池组分中以各种浓度添加了乙醇和ETBE，因此总共准备并测试了30个汽油-乙醇-ETBE样品。确定了含有0.9-5.5％v / v乙醇和2.0-9.8％v / v ETBE的混合物的蒸气压和辛烷值[研究辛烷值（RON）和电动机辛烷值（MON）]。乙醇由于其良好的抗爆特性，一直被认为是炼厂汽油库的重要成分。然而，其在汽油中的共沸行为被认为是共混物的蒸气压的缺点。另一方面，在汽油中使用ETBE会增加辛烷值并降低蒸气压，因此，炼油厂搅拌机可以在最终燃料配方中使用较高蒸气压的基础汽油。实验结果表明，汽油配方中乙醇浓度高达5％v / v会增加混合物的蒸气压。在基础汽油中同时添加乙醇和ETBE会形成三元混合物，这种混合物可平滑蒸气压的行为，同时充当出色的辛烷值改进剂。

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