Pyrolytic Distillation of No. 4 Fuel Oil

摘要

Fuel oils (numbers 1-6) are fractions of crude oil. The boiling point and carbon chain length of the fuel increases with fuel oil number. Viscosity increases with the number, and is needed to flow the heated heavy oil. No. 4 fuel oils are used as burner fuel for domestic and industrial heating and have to raise steam for power generation and marine propulsion. Recycling and rerefining are application processes for the treatment of petroleum-based heavy products by converting into reusable light products such as gasoline and No. 2 diesel fuel. Possible pyrolysis and cracking processes are appropriate. The purpose of this study is performed to obtain light products, especially gasoline and No. 2 diesel fuel from No. 4 fuel oil by the method of pyrolytic distillation. Sodium carbonate (Na2CO3) was used in pyrolysis as catalyst and the purified oil samples were blended separately with catalysts having a mass basis of 5% and 10%. If the objective is to maximize the yield of distillate producing from No. 4 fuel oil, a low temperature and a high heating rate process would be required. The yield of gasoline-like fuel was 10.6% in the noncatalytic conversion, while 13.3% was obtained in the catalytic conversion. The yield of No. 2 diesel-like fuel was 23.3% in the noncatalytic conversion, while of 32.6% was obtained in the catalytic conversion. The yield of No. 2 diesel-like obtained from the catalytic conversion was higher 39.9% than that of the noncatalytic conversion.