Processes for producing petrochemical products that utilize hydrotreating of cycle oil
AssigneeSaudi Arabian Oil Company
InventorsMusaed Salem Al-Ghrami, Aaron Chi Akah, Abdennour Bourane
Life of this patent
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Abstract
According to one or more embodiments, presently disclosed are processes for producing petrochemical products from a hydrocarbon material. The process may include separating the hydrocarbon material into at least a lesser boiling point fraction and a greater boiling point fraction, cracking at least a portion of the greater boiling point fraction, cracking at least a portion of the lesser boiling point fraction, separating cycle oil from one or both of the first cracking reaction product or the second cracking reaction product, hydrotreating the cycle oil to form a hydrotreated cycle oil, and recycling the hydrotreated cycle oil.
Claims24
A process for producing petrochemical products from a hydrocarbon material, the process comprising:
- separating the hydrocarbon material into at least a lesser boiling point fraction and a greater boiling point fraction;
- cracking at least a portion of the greater boiling point fraction in the presence of a first catalyst at a reaction temperature of from 500° C. to 700° C. to produce a first cracking reaction product;
- cracking at least a portion of the lesser boiling point fraction in the presence of a second catalyst at a reaction temperature of from 500° C. to 700° C. to produce a second cracking reaction product;
- separating cycle oil from one or both of the first cracking reaction product or the second cracking reaction product, wherein at least 99 wt. % of the cycle oil has a boiling point of at least 215° C.;
- hydrotreating the cycle oil to form a hydrotreated cycle oil;
- and
- recycling an entirety of the hydrotreated cycle oil by directly combining the hydrotreated cycle oil with the greater boiling point fraction upstream of the cracking of the greater boiling point fraction.
A process for operating a hydrocarbon feed conversion system for producing petrochemical products from a hydrocarbon feed stream, the process comprising:
- introducing the hydrocarbon feed stream to a feed separator;
- separating the hydrocarbon feed stream into at least a lesser boiling point fraction stream and a greater boiling point fraction stream in the feed separator;
- passing the greater boiling point fraction stream to a first fluidized catalytic cracking unit;
- passing the lesser boiling point fraction stream to a second fluidized catalytic cracking unit;
- cracking at least a portion of the greater boiling point fraction stream in the first fluidized catalytic cracking unit in the presence of a first catalyst at a reaction temperature of from 500° C. to 700° C. to produce a first cracking reaction product stream;
- cracking at least a portion of the lesser boiling point fraction stream in the second fluidized catalytic cracking unit in the presence of a second catalyst and at a reaction temperature of from 500° C. to 700° C. to produce a second cracking reaction product stream;
- separating a cycle oil stream from one or both of the first cracking reaction product stream or the second cracking reaction product stream, wherein at least 99 wt. % of the cycle oil stream has a boiling point of at least 215° C.;
- hydrotreating the cycle oil stream to form a hydrotreated cycle oil stream;
- and
- recycling an entirety of the hydrotreated cycle oil stream by directly combining the hydrotreated cycle oil with the greater boiling point fraction upstream of the first fluidized catalytic cracking unit.
Dependencies are inferred from the claim text.