US 11,724,974 B2
Methods for dehydrogenating hydrocarbons
Kevin Blann, Lake Jackson, TX (US); Alexey Kirilin, Hoek (NL); Andrzej Malek, Midland, MI (US); Victor Sussman, Midland, MI (US); Matthew T. Pretz, Freeport, TX (US); Brien A. Stears, League City, TX (US); Barry B. Fish, Lake Jackson, TX (US); Eric E. Stangland, Midland, MI (US); Brian W. Goodfellow, Sugarland, TX (US); and Manish Sharma, Missouri City, TX (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Appl. No. 17/271,139
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Aug. 27, 2019, PCT No. PCT/US2019/048391
§ 371(c)(1), (2) Date Feb. 24, 2021,
PCT Pub. No. WO2020/046978, PCT Pub. Date Mar. 5, 2020.
Claims priority of provisional application 62/814,045, filed on Mar. 5, 2019.
Claims priority of provisional application 62/725,497, filed on Aug. 31, 2018.
Prior Publication US 2021/0292259 A1, Sep. 23, 2021
Int. Cl. C07C 5/48 (2006.01); C07C 5/333 (2006.01); B01J 21/04 (2006.01); B01J 21/06 (2006.01); B01J 21/10 (2006.01); B01J 23/08 (2006.01); B01J 23/26 (2006.01); B01J 23/42 (2006.01)
CPC C07C 5/48 (2013.01) [B01J 21/04 (2013.01); B01J 21/06 (2013.01); B01J 21/10 (2013.01); B01J 23/08 (2013.01); B01J 23/26 (2013.01); B01J 23/42 (2013.01); C07C 2521/04 (2013.01); C07C 2521/06 (2013.01); C07C 2521/10 (2013.01); C07C 2523/08 (2013.01); C07C 2523/26 (2013.01); C07C 2523/42 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for dehydrogenating hydrocarbons comprising:
passing a hydrocarbon feed comprising one or more alkanes or alkyl aromatics into a first fluidized bed reactor, wherein at least 95 wt. % of the hydrocarbon feed has an atmospheric boiling point of less than or equal to 300° C.;
contacting the hydrocarbon feed with a dehydrogenation catalyst in the first fluidized bed reactor to produce a dehydrogenation effluent comprising hydrogen;
passing the dehydrogenation effluent to a second fluidized bed reactor, wherein the second fluidized bed reactor comprises an oxygen-rich oxygen carrier material, and wherein the oxygen-rich oxygen carrier is reducible;
contacting the hydrogen of the dehydrogenation effluent with the oxygen-rich oxygen carrier material to combust at least a portion of the hydrogen, produce a combustion effluent, and form an oxygen-diminished oxygen carrier material;
passing the oxygen-diminished oxygen carrier material to a first regeneration unit;
oxidizing the oxygen-diminished oxygen carrier material in the first regeneration unit to form the oxygen-rich oxygen carrier material; and
passing the oxygen-rich oxygen carrier material from the first regeneration unit to the second fluidized bed reactor.