The pyrolizing of waste lubricating oil (WLO) into diesel fuel over a supported calcium oxide additive

Abstract

Most the lubricant oils are generally obtained from petroleum resources. Waste lubricating oil can be converted into valuable fuel products by refining and treating processes. Recycling is the applicable process for upgrading of petroleum-based wastes by converting them into reusable products such as gasoline, diesel fuel, and heavy oil. Possible acceptable processes are cracking and pyrolysis. A pyrolytic distillation process is often employed in oil refinery operations to produce lower molecular weight hydrocarbon fuels from waste feedstocks. If the purpose is to maximize the yield of distillate products resulting from lubricant oil pyrolysis, a low temperature, high heating rate, and short gas residence time process would be required. The effect of calcium oxide (CaO) as additive on density, viscosity, flash point, sulfur content, higher heating value, and pyrolytic distillation yields was investigated. The purified oil samples are blended separately with additives having mass bases of 2%, 4%, 6%, 8%, and 10%.