What can the catalytic cracking space velocity tell us?
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What can the catalytic cracking space velocity tell us? Everyone discusses
Increasing the space velocity in fluidized-bed catalytic cracking no longer holds much significance. There are important operational factors affecting fixed-bed reactors. Air velocity: The ratio of the amount of oil entering the reactor per hour to the amount of catalyst present in the reactor.
Air velocity is an important factor for controlling reaction time and fuel-to-oil ratio.
It is correlated with reaction time; at low space velocities, the contact time between the feedstock and the catalyst is longer, which increases the degree of over-cracking and the opportunities for hydrogen transfer reactions, thereby reducing the olefin content in gasoline.
At low air velocities, the contact time between the feedstock and the catalyst is longer, increasing the degree of over-cracking and the opportunities for hydrogen transfer reactions, thereby reducing the olefin content in gasoline. Agree with this statement.
Airspeed is a very important parameter that must be given attention to.
There is an informal but illustrative saying: “Airspeed is the reciprocal of reaction time.” The rest is up to the original poster to figure out.