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- W86789983 abstract "The effect of removing propylene from the alkylation feed was tested in a continuous pilot plant with typical catalytic cracker mixed butenes (CC) and with hydroisomerized catalytic cracker butenes in which 1-butene was converted to 2-butene (HI). Engine-determined research clear (RON + 0) and research leaded (RON + 3) octane numbers were obtained for each alkylate. The total alkylate RON + 0 was increased by about three units by removing propylene, which was approx. 45Vertical Bar3< of the olefins, from the alkylation feed, e.g., for an isobutane/CC feed ratio of 13:1 and a 90/sup 0/F reactor temperature, the RON + 0 value was increased from 93.5 to 96.5; for an HI feed containing 6.5Vertical Bar3< 1-butene, 30.5Vertical Bar3< isobutene, and 63Vertical Bar3< 2-butene, the RON + 0 value was lowered by one additional unit. In the 50/sup 0/-90/sup 0/F range, the lower temperatures favored higher quality alkylates, but today's barrel octane value probably would not justify the investment cost of a refrigeration unit. Also, the HI alkylate contained more trimethylpentanes than CC alkylate; lowering the reactor temperature favored 2,3,4- instead of 2,2,4-trimethylpentane formation; and a 13:1 isobutane/olefin feed gave better quality alkylates than a 7:1 feed ratio." @default.
- W86789983 created "2016-06-24" @default.
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- W86789983 date "1978-01-01" @default.
- W86789983 modified "2023-09-27" @default.
- W86789983 title "HF alkylation of cat-cracker butenes" @default.
- W86789983 hasPublicationYear "1978" @default.
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