公开(公告)号：US12012556B2

公开(公告)日：2024-06-18

申请号：US17632569

申请日：2020-07-21

Applicant: SABIC Global Technologies B.V.

Inventor： Mayank Kashyap

IPC: C10G11/18 ,  B01J8/18 ,  B01J8/28 ,  C10G11/05

CPC classification number: C10G11/18 ,  B01J8/1818 ,  B01J8/1854 ,  C10G11/05 ,  C10G11/182 ,  C10G2300/1044 ,  C10G2400/20

Abstract: Systems and methods for producing light olefins via catalytic cracking of naphtha are disclosed. A naphtha feed stream and lift gas stream are fed into a dense phase riser reactor operated with a high solid volume fraction, a high superficial velocity, minimum back mixing. The effluent stream from the dense phase riser reactor is further separated, in a secondary reactor, to form a gaseous product stream and a catalyst stream. The catalyst stream is stripped to remove the hydrocarbons adsorbed on the catalyst particles. The stripped catalyst is regenerated in a regenerator.

公开(公告)号：US12060528B2

公开(公告)日：2024-08-13

申请号：US17632555

申请日：2020-07-21

Applicant: SABIC Global Technologies B.V.

Inventor： Mayank Kashyap

IPC: C10G11/18

CPC classification number: C10G11/187 ,  C10G2300/1044 ,  C10G2300/4018 ,  C10G2300/807 ,  C10G2400/20 ,  C10G2400/30

Abstract: Systems and methods for producing light olefins via catalytic cracking of naphtha are disclosed. A naphtha feed stream and lift gas stream are fed into a plurality of dense phase riser reactors, each of which is operated with a high solid volume fraction, a high superficial velocity, and minimum back mixing. The effluent stream from each dense phase riser reactor is further separated, in a secondary reactor, to form a gaseous product stream and a catalyst stream. The catalyst stream is stripped to remove the hydrocarbons adsorbed on the catalyst particles. The stripped catalyst is regenerated in a regenerator.

公开(公告)号：US12012555B2

公开(公告)日：2024-06-18

申请号：US17626761

申请日：2020-07-30

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Mayank Kashyap

IPC: C10G11/18 ,  B01J8/00 ,  B01J8/18 ,  B01J8/26 ,  B01J8/38 ,  B01J29/06

CPC classification number: C10G11/18 ,  B01J8/0055 ,  B01J8/1845 ,  B01J8/26 ,  B01J8/388 ,  B01J29/06 ,  B01J2208/00017 ,  B01J2208/00539 ,  B01J2208/00557 ,  B01J2208/0084 ,  B01J2208/00911 ,  C10G2300/1044 ,  C10G2400/20

Abstract: Systems and methods for producing light olefins wherein a feed stream comprising naphtha is flowed into a reaction unit comprising a fast fluidized bed reactor coupled to and in fluid communication with a riser reactor. The fast fluidized bed reactor comprises baffles therein to minimize backmixing therein to maximize the production of light olefins. The effluent from the fast fluidized bed reactor is further flowed to the riser reactor. The lift gas, which can comprise nitrogen, methane, flue gas, or combinations thereof, is injected in the reaction united via a sparger. Effluent of the riser reactor is separated in a product separation unit to produce a product stream comprising light olefins and spent catalyst. Spent catalyst is further stripped by a stripping gas comprising methane, nitrogen, flue gas, or combinations thereof. Stripped spent catalyst is regenerated to produce regenerated catalyst, which is subsequently flowed to the fast fluidized bed reactor.