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Cracking is required to upgrade gasoline obtained from crude distillation units (CDUs) which have low octane numbers between 40-60. Cracking breaks down heavier hydrocarbons into lighter fractions with higher octane numbers between 85-95. There are two main types of cracking - thermal cracking using high temperatures and pressures, and catalytic cracking using acid-treated silica-alumina catalysts. Catalytic cracking is the most common method and takes place at 480°C and 0.7-1 atm pressure in a fluidized ca

Author

Abderrahim HAMDAOUI

Language

EN