US 11,945,760 B2
Process for converting one or more methyl halides into ethylene and propylene
Nikolai Nesterenko, Nivelles (BE); Gleb Veryasov, Nivelles (BE); Raoul Dethier, Schaerbeek (BE); and Romuald Coupan, Vanves (FR)
Assigned to TOTALENERGIES ONETECH, Courbevoie (FR); and SULZER MANAGEMENT AG, Winterthur (CH)
Appl. No. 17/777,924
Filed by TOTALENERGIES ONETECH, Courbevoie (FR); and SULZER MANAGEMENT AG, Winterthur (CH)
PCT Filed Nov. 20, 2020, PCT No. PCT/EP2020/082842
§ 371(c)(1), (2) Date May 18, 2022,
PCT Pub. No. WO2021/099548, PCT Pub. Date May 27, 2021.
Claims priority of application No. 19315143 (EP), filed on Nov. 22, 2019.
Prior Publication US 2022/0411350 A1, Dec. 29, 2022
Int. Cl. C07C 1/30 (2006.01); B01J 23/02 (2006.01); C07C 11/04 (2006.01); C07C 11/06 (2006.01)
CPC C07C 1/30 (2013.01) [B01J 23/02 (2013.01); C07C 11/04 (2013.01); C07C 11/06 (2013.01)] 13 Claims
OG exemplary drawing
 
1. Process for converting one or more methyl halides to ethylene and propylene, said process comprising the following steps:
a) providing a feedstream (1) comprising one or more methyl halides; optionally, diluted in at least one diluent;
b) providing a first catalyst composition and a second catalyst composition, said second catalyst composition comprising a cracking catalyst;
c) contacting said feedstream (1) with said first catalyst composition in a first reaction zone (3) under first reaction conditions to provide a first product stream (5); and
d) subjecting at least a part of said first product stream (5) to an olefin catalytic cracking with said second catalyst composition in a second reaction zone (7) under second reaction conditions to provide a second product steam (9),
the process is characterized in that
said first reaction conditions include a reaction temperature below 400° C., and in that said first catalyst composition comprises a first catalyst composition molecular sieve with a Si/Al atomic ratio ranging from 2 to 18, wherein the first catalyst composition molecular sieve comprises a plurality of pores, with a shape of an 8-membered ring or less and further wherein the first catalyst composition molecular sieve in the first catalyst composition is SSZ-39; wherein the first product stream has a propylene to ethylene ratio of greater than 1, wherein the second reaction conditions of step (d) include a reaction temperature ranging from 500° C. to 600° C.,
wherein the cracking catalyst of the second catalyst composition comprises one or more molecular sieves selected from silicalites from the MFI family with a Si/Al atomic ratio of more than 100, crystalline silicate from the MFI family with a Si/Al atomic ratio of at least 180, crystalline silicate from the MEL family with a Si/Al atomic ratio ranging between 150 and 800, or combinations thereof.