The question of whether the reaction terminator participates in the reaction
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If the quench oil used in the catalytic riser is replaced with light contaminated oil as a terminator, does this light contaminated oil participate in the reaction? If it does not participate, what are the benefits of using light contaminated oil? Could you please explain?
Does that mean that lightly contaminated oil can no longer be cracked using catalytic cracking catalysts?
If it’s just not performing well, it’s better to use the cold reflux line of the distillation tower!
Why is the amount of coking higher for the same processing volume after blending?
I mainly want to ask whether this lightly contaminated oil will still react when it enters the lift pipe
The reaction will occur; it’s just a matter of to what extent. Light contaminated oil has a complex composition, consisting mainly of gasoline and diesel components. Since these components often change (of course, if your facility manages light contaminated oil in a proper manner, and the oil is only unsuitable due to being too dry with no other issues, it can be directly fed into the distillation tower). However, if the components are not stable and change significantly frequently, it’s better to send it through a reaction process first. As the title suggests, will a reaction occur? Answer: Temperature, catalyst, and light contaminated oil can cause a reaction. But the main components of the product are still gasoline and diesel; there is also some dry gas, LPG, and coke, as well as residues from contaminated oil.
In other words, this portion of gasoline or diesel will still undergo thermal cracking and catalytic cracking reactions as it enters the riser. Then why is it called a terminator?
One additional point: the injection of a terminator affects the agent-oil ratio, which in turn influences the product distribution of the raw material. Therefore, it remains to be determined whether it is the terminator that causes an increase in coke production.
Catalytic cracking is just a big trash can; it’s tragic!