Catalytic cracking feedstock analysis
Thread Content
Does a high content of saturated hydrocarbons in catalytic cracking feedstock result in a higher overall yield of light products? (LPG, gasoline, and diesel)
It’s quite important to choose the right saturated hydrocarbon; some saturated hydrocarbons may not produce the desired products under the conditions of catalytic cracking!
There is also consideration for primary reactions and secondary reactions
Consideration of product distribution under identical reaction conditions
A high content of saturated hydrocarbons does not necessarily indicate a high yield of high-value products as reaction outcomes, such as polycyclic aromatic hydrocarbons with side chains. These are also considered saturated hydrocarbons; their side chains are easily cracked and can undergo carbocation reactions. However, polycyclic aromatic hydrocarbons are difficult to crack, and some of them serve as precursors to coke – only those with fewer rings can end up in the diesel fraction. So what you said isn’t completely accurate.