Gasoline systems, compatibility

By avoiding the acid catalysis mechanism of the conventional FCC zeolite catalyst (optimized over the years for high octane gasoline), the novel MAB catalyst will produce substantially lower aromatics in the liquid products than is possible by less extreme FCC catalyst adaptations. By changing the FCC reaction system, it is possible to overcome the MAB catalyst low activity drawback and achieve slurry yields compatible with those observed in maximum distillate operation in today s FCC units. 

The fuel lines onboard flexible fuel vehicles using ethanol will typically be designed to accommodate methanol fuels and should be more than adequate for ethanol. Most fuel system components designed for gasoline are likely also to be compatible with ethanol. In a test of a 1994 model fuel injected vehicle, only slight stiffening of the fuel line was observed [3.11]. No other materials compatibility problems were observed in the fuel system. 

Like dispensing hoses, nozzles must be made specifically for methanol fuel. Gasoline nozzles usually contain aluminum parts and elastomers that are not compatible with methanol. Most gasoline nozzles will function for a time, but even when they are working, they are putting corrosion products directly into the vehicle. Emco-Wheaton makes a dispensing nozzle compatible with methanol and configured for vapor recovery systems. 

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