Mihaela NEAGU Petre, Paul Rosca, Raluca-Elena Dragomir<br>The Effect of Bio-ethers on the Volatility Properties <br>of Oxygenated Gasoline

Mihaela NEAGU Petre, Paul Rosca, Raluca-Elena Dragomir
The Effect of Bio-ethers on the Volatility Properties
of Oxygenated Gasoline

Abstract:

One way to reduce the vented pollutant emissions from vehicles and also to extend the raw material base is to use oxygenated bio compounds as substitutes of some parts of conventional gasoline. The volatility properties of substituted gasoline with bio-ethers influence both the vehicle engine running and hydrocarbon losses by evaporation. A study regarding the effect of substituting two types of classical gasoline with different compositions and properties with the proportion varying between 4 to 15% vol. of methyl tert-butyl ether (MTBE), tert-amyl methyl ether (TAME) and bio- ethyl tert-butyl ether (bio-ETBE) on the Reid vapour pressure, on the distillation curves and vapour lock index is presented in this paper. The experimental results were interpreted by comparison with the values of these specified properties by commercial gasoline quality European standard, EN 228. In the commercial gasoline formulation it has become very useful to establish some relation for calculating the Reid vapour pressure of the evaporated percentage at the temperature of 700C (E70) and vapour index (VLI), so that the screening in the volatility classes be quickly predicted. Because the literature doesn’t present such calculation relation, in the final part of this paper we suggest some empirical relation by means of which this properties are determined depending on base gasoline characteristics, on type and ratio of used ether addition in the formulation recipe. Keywords: gasoline, bio-ethers, volatility properties, calculation relations

Issue: 2011, Volume 62, Issue 5

Pages:

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