Discuss fischer-tropsch process for preparing gasoline

Fischer-tropsch process is carried out to prepare gasoline from non-petroleum origin. The arrangement for charring out this process as

• Water gas and H₂ is sent through Fe2O2 tower where H2S present as an impurity is removed.
• It is then passed through Fe₂O₃ and N₂CO₂ tower where organic sulfur gets removed.
• The resulting gases are then compressed to 5-25 atmospheres and sent through the catalyst bed. The catalyst bed is maintained on earth in the ration of 200:0C. the bed is made up of cobalt:thoria:magnesia: kieselguhr earth in the ratio of 100:5:8:200.
• The resulting gaseous mixture is sent through cooler when a liquid resembling crude oil is obtained.
• Crude oil so obtained is subjected to fractional distillation in a fractionating column to get gasoline and heavy oil.
• Heavy oil is reused for cracking.
• The quality and nature of the product depend on the Fischer tropic catalysts, temperature and pressure are used.