US 12,440,817 B2
Polymerization process for olefins
Mpho Prudence Setlhaku, Gladbeck (DE); Martin Alexander Zuideveld, Kelmis (BE); and Bobby Johannes Henricus Hubertus Smeets, Spaubeek (NL)
Assigned to SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Appl. No. 17/763,440
Filed by SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
PCT Filed Sep. 23, 2020, PCT No. PCT/EP2020/076634
§ 371(c)(1), (2) Date Mar. 24, 2022,
PCT Pub. No. WO2021/058607, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 19199315 (EP), filed on Sep. 24, 2019.
Prior Publication US 2022/0339592 A1, Oct. 27, 2022
Int. Cl. B01J 8/00 (2006.01); B01J 8/08 (2006.01); B01J 8/14 (2006.01); B01J 8/18 (2006.01); C08F 10/06 (2006.01)
CPC B01J 8/008 (2013.01) [B01J 8/0015 (2013.01); B01J 8/082 (2013.01); B01J 8/085 (2013.01); B01J 8/087 (2013.01); B01J 8/14 (2013.01); B01J 8/1827 (2013.01); C08F 10/06 (2013.01); B01J 2208/0053 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A process for the polymerization of olefin monomers in the presence of a catalyst system, the process comprising:
a. feeding a liquid flow of one or more olefin monomers into a tubular pre-polymerization reactor;
b. contacting the liquid flow of one or more olefin monomers with a flow of a catalyst system in the tubular pre-polymerization reactor to obtain a pre-polymer;
c. feeding the pre-polymer obtained in step b) to a polymerization reactor;
wherein the tubular pre-polymerization reactor has a length L and the flow of the catalyst system is introduced in the tubular pre-polymerization reactor in the middle within 30-70% of L or at the end within 70-95% of L of the tubular pre-polymerization reactor,
wherein the tubular pre-polymerization reactor has a Length/Diameter (L/D) ratio of 1,000 to 50,000.