	US 12,012,556 B2
	Dense phase riser to maximize light olefins yields for naphtha catalytic cracking
Mayank Kashyap, Sugar Land, TX (US)
Assigned to SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Appl. No. 17/632,569
Filed by SABIC Global Technologies B.V., Bergen op Zoom (NL)
PCT Filed Jul. 21, 2020, PCT No. PCT/IB2020/056849 § 371(c)(1), (2) Date Feb. 3, 2022, PCT Pub. No. WO2021/024068, PCT Pub. Date Feb. 11, 2021.
Claims priority of provisional application 62/883,051, filed on Aug. 5, 2019.
Prior Publication US 2022/0275285 A1, Sep. 1, 2022
Int. Cl. C10G 11/18 (2006.01); B01J 8/18 (2006.01); B01J 8/28 (2006.01); C10G 11/05 (2006.01)

CPC C10G 11/18 (2013.01) [B01J 8/1818 (2013.01); B01J 8/1854 (2013.01); C10G 11/05 (2013.01); C10G 11/182 (2013.01); C10G 2300/1044 (2013.01); C10G 2400/20 (2013.01)]

20 Claims

1. A method of producing light olefins; the method comprising:

contacting, in a dense phase riser reactor, naphtha with catalyst particles under reaction conditions sufficient to produce a first product comprising one or more olefins, wherein the reaction conditions in the dense phase riser reactor comprise a solid volume fraction of 0.06 to 0.12 and a superficial gas velocity in a range of 12 to 21 m/s; and

flowing a mixture of the first product, the catalyst particles, and unreacted naphtha to a cyclone system disposed in a secondary reactor, wherein the secondary reactor is stacked on top of a catalyst regenerator;

wherein the reaction conditions further comprise a reaction temperature in a range of 670 to 730° C., a reaction pressure in a range of 1 to 3 bar.