Production of Motor Fuels for Cold Climates with Simultaneous Refining of Vegetable and Crude Oil Stock

Resumo

The feasibility of incorporating synthetic oil produced by the Fischer—Tropsch process from synthesis gas of a wood-biomass gasification process into the production of class K5 alternative low-pour-point fuels by processing in a blend with straight-run diesel distillate employing a two-stage scheme (first stage, hydrofining in the presence of conventional hydrofining catalyst Co-Mo/Al₂O₃; second, hydroisodewaxing) is investigated. It is shown that a nickel-molybdenum-containing hydroisodewaxing catalyst based on a binary mixture of zeolites (high-silica low-alkali zeolite TsVN of pentasil structure and mordenite) enables the production of diesel fuel for Arctic conditions (limit filterability temperature –45°C) and aviation kerosene with an initial crystallization temperature of –63°C. A mixture of boron and lanthanum oxides was used as the promoter; a mixture of amorphous aluminum silicate and γ-alumina, as the binder.