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US 2020/0239387 A1Published application
Aromatization Processes Using Both Fresh and Regenerated Catalysts, and Related Multi-Reactor Systems
AssigneeChevron Phillips Chemical Company LP
InventorsRyan W. Snell, Gabriela D. Alvez-Manoli, Xianghong Hao
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Abstract
Multi-reactor systems with aromatization reactor vessels containing a catalyst with low surface area and pore volume, followed in series by aromatization reactor vessels containing a catalyst with high surface area and pore volume, are disclosed. Related reforming methods using the different aromatization catalysts also are described.
Claims22
1-11. (canceled)
An aromatization reactor vessel system comprising:
- (A) at least one first reactor vessel comprising:
- (a1) a first reactor inlet for introducing a first hydrocarbon feed into the at least one first reactor vessel;
- (a2) a first aromatization catalyst for catalytically converting at least a portion of the first hydrocarbon feed under first reforming conditions to produce a first aromatic product;
- wherein the first aromatization catalyst comprises a first transition metal and a first catalyst support, the first aromatization catalyst characterized by:
- a first surface area in a range from about 80 m2/g to about 150 m2/g;
- and/or
- a first micropore volume in a range from about 0.01 cc/g to about 0.048 cc/g;
- and
- (a3) a first reactor outlet for discharging a first effluent comprising the first aromatic product from the at least one first reactor vessel;
- (B) at least one second reactor vessel comprising:
- (b1) a second reactor inlet for introducing a second hydrocarbon feed into the at least one second reactor vessel;
- (b2) a second aromatization catalyst for catalytically converting at least a portion of the second hydrocarbon feed under second reforming conditions to produce a second aromatic product;
- wherein the second aromatization catalyst comprises a second transition metal and a second catalyst support, the second aromatization catalyst characterized by:
- a second surface area in a range from about 160 m2/g to about 260 m2/g;
- and/or
- a second micropore volume in a range from about 0.05 cc/g to about 0.09 cc/g;
- and
- (b3) a second reactor outlet for discharging a second effluent comprising the second aromatic product from the at least one second reactor vessel;
- and
- (C) a furnace positioned between the first reactor outlet and the second reactor inlet, the furnace capable of heating the first effluent to form the second hydrocarbon feed.
17 more elements
Dependencies are inferred from the claim text.