Exhaustive schemes for refining C3-C4 hydrocarbon fractions

Abstract

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.

Improving vehicle adaptability to the operating conditions of «smart» cities in the northern regions

“…A comprehensive solution to the problem requires a drastic change in the ratio of refining processes towards developing modern processes of improving fuel quality, which is not possible without multi-billion investments [12]. Different aspects of improving the quality of motor fuels by refining methods are presented in various studies [12][13][14][15].…”