Exhaustive schemes for efficient refining of the C 3 -C 4 hydrocarbon fraction using zeolite type Y catalysts to obtain a high-octane additive are proposed.C 3 -C 4 hydrocarbon fractions in gas-condensate fields and oil refining are a mixture of paraffins of normal and iso structure and olefins. The most effective and rational direction in utilizing such large-tonnage resources of these gases is synthesis of liquid hydrocarbons, for example, a high-octane additive (HOA) for gasolines.More exhaustive refining of petroleum feedstock and an increase in gasoline supplies are obtained as a result.Oligomerization of the propane-propylene (PPF) or butane-butylene (BBF) fractions -Dimersol-G, and alkylation of isobutane with olefins on liquids catalysts are widely used in industry to obtain HOA. n-Butane (propane) Dehydrogenation stage Alkylation stage on SHC Alkylate fractionation stage BBF (PPF) Oligomerization stage Alkylate Oligonaphtha Oligonaphtha fractionation stage Fig. 1. Processing with the first version.
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