Question

how petrol diesiel kerosine are obtained from petroleum

Answer 1

heya folk

petrol diesel and kerosene are obtained from petroleum through fractional distallation
. these are by products of petroleum

petrol is separated at 70 ℃
diesel is separated at 270℃
keresone is separated at 170℃

Answer 2

Kerosene is an oil distillate commonly used as a fuel or solvent. It is a thin, clear liquid consisting of a mixture of hydrocarbons that boil between 302°F and 527°F (150°C and 275°C). While kerosene can be extracted from coal, oil shale, and wood, it is primarilyderived from refined petroleum.The diesel fuel that reaches the end user begins its life as crude oil, the result of large, decaying quantities of biomass (vegetable and animal) combined with pressure and heat. Once this base oil has been harvested, it is transported to a refinery where it undergoes three processes: separation, conversion and purification. The separation process occurs in large distillation towers, where the oil is exposed to extreme heat, causing it to separate into gases and liquids. The products separate based on the temperature differences between the bottom and top of the tower. The products range from propane gas near the top, diesel in the middle and lubricants near the bottom. The next step in diesel production is conversion, which usually involves applying a catalyst to some of the heavier oils from the separation process to create more gasoline, diesel and propane. The final step in the process is purification, and usually involves exposing the products to hydrogen and a catalyst for the removal of sulfur.