Reprocess hydrocracking tail oil or send it to ethylene cracking?
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Reprocess hydrocracking tail oil or send it to ethylene cracking? Which benefit is better?
(1) Tail oil reprocessing – Heavy naphtha – Reforming – PX (2)
(2) Deethylation cracking unit – produces ethylene and propylene
Deethylation cracking is more economical, while the reprocessing process is longer and requires more energy.
Is the OP in planning? In the case of hydrocracking, it depends on whether it is a single-pass process or a partial or full recycle process; deliberately reprocessing the hydrogenation tail oil is unreasonable and not cost-effective. In scenarios where tail oil is available as feedstock for ethylene production, it is recommended that the hydrocracking process be operated in a partial recycle mode, allowing tail oil to be withdrawn as needed.
It can be used as a high-quality raw material for white oil