How to separate a mixture of gasoline and diesel
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A mixture of gasoline and diesel needs to be separated; what is the best way to do this? A very high purity level is not required; the customer mentioned using thin-film evaporation – is that acceptable?
A thin-film evaporator can be used for this purpose. Both gasoline and diesel are hydrocarbon substances, and they can be fully mixed together; the distinction between them lies mainly in their boiling points. The final boiling point of gasoline is 205 degrees Celsius, while the initial boiling point of diesel is 180 degrees Celsius. Therefore, by controlling the temperature of the evaporator, it is possible to separate gasoline from diesel.
If it is only gasoline and diesel, without the kerosene fraction in between, simple distillation is the most straightforward approach.
Which type of film evaporator to use: falling film or rising film?