New equations help rapidly determine alkylate octane numbers

Lyle F. Albright, Roger E. Eckert Purdue University West Lafayette, Ind. Both research and motor octane numbers of all isoparaffins in alkylates produced in refineries can be predicted, some for the first time, using mathematical models developed in the present investigation. Employing a gas chromatographic unit for analysis, the octane numbers of the alkylates can now be predicted with improved accuracy in about 30-40 min. Rapid determination of the RON and the MON of alkylates (C5-C16 isoparaffins) is useful in optimizing the operation of refinery alkylation units. Typically, alkylates have 94-97 RON values and slightly lower MON values. Based on results in t...

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