Process for producing C2-C4 olefins
AssigneeKing Fahd University of Petroleum and Minerals
InventorsAbdulkadir Tanimu, Abdullah Mohammed Aitani, Ramzi Hadi Alshugaih
Life of this patent
Estimating the term…
Abstract
A process for producing C2-C4 olefins including the fluid catalytic cracking of a solution of a low-density polyethylene (LDPE) in a heavy vacuum gas oil in the presence of a catalyst, wherein the catalyst includes: an ultra-stable Y zeolite; and, a ZSM-5 zeolite, wherein the ZSM-5 zeolite has: a silica to alumina ratio by weight of from 40:1 to 80:1; a mesopore surface area of from 150 to 250 m2/g, as determined by Barrett-Joyner-Halenda (BJH) desorption analysis; a mesopore volume of from 0.070 to 0.200 cm3/g, as determined by Barrett-Joyner-Halenda (BJH) desorption analysis; and, a total acidity of from 0.25 to 0.75 mmol/g, as determined by ammonia temperature programmed desorption.
Claims20
A process for producing C2-C4 olefins, comprising:
- fluid catalytic cracking a solution of a low density polyethylene (LDPE) in a heavy vacuum gas oil in the presence of a catalyst, wherein the catalyst comprises:
- an ultra-stable Y zeolite;
- and,
- a ZSM-5 zeolite,
- wherein the ZSM-5 zeolite has:
- a silica to alumina ratio by weight of from about 40:1 to about 80:1;
- a mesopore surface area of from about 150 to about 250 m2/g, as determined by Barrett-Joyner-Halenda (BJH) desorption analysis;
- a mesopore volume of from about 0.070 to about 0.200 cm3/g, as determined by Barrett-Joyner-Halenda (BJH) desorption analysis;
- and,
- a total acidity of from about 0.25 to about 0.75 mmol/g, as determined by ammonia temperature programmed desorption.
Dependencies are inferred from the claim text.