Removal of Lead from Gasoline: Technical Considerations
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چکیده
Refiners add tetraethyl lead (TEL) and tetramethyl lead (TML) to gasoline to increase octane. In most situations, adding lead is the least expensive means of providing incremental octane to meet gasoline specifications. At sufficiently high levels, addition of lead can increase octane as much as 10 to 15 control octane numbers (Figure 1). Lead susceptibility (the gasoline’s propensity to increase in octane with lead addition) is a function of the gasoline’s composition and blending properties. In general, the higher a base gasoline’s clear octane (before lead addition), the lower is its lead susceptibility. Lead addition is subject to decreasing returns to scale: each increment of lead added to a gasoline blend provides a smaller octane boost than the previous increRemoval of Lead from Gasoline: Technical Considerations
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