US 11,684,904 B2
Initiator injection into high pressure LDPE reactors
Kenneth A. Dooley, Porter, TX (US); Corey W. Knight, Houston, TX (US); Ralph J. Price, Porter, TX (US); and Joel A. Mutchler, Porter, TX (US)
Assigned to Chevron Phillips Chemical Company LP, The Woodlands, TX (US)
Filed by Chevron Phillips Chemical Company LP, The Woodlands, TX (US)
Filed on Oct. 14, 2021, as Appl. No. 17/501,032.
Prior Publication US 2023/0122570 A1, Apr. 20, 2023
Int. Cl. B01J 19/26 (2006.01); B01J 19/24 (2006.01); B01J 19/00 (2006.01); C08F 10/02 (2006.01)
CPC B01J 19/26 (2013.01) [B01J 19/0013 (2013.01); B01J 19/248 (2013.01); C08F 10/02 (2013.01); B01J 2219/00051 (2013.01); B01J 2219/00162 (2013.01); B01J 2219/00164 (2013.01); B01J 2219/182 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A method for operating a high pressure olefin polymerization reactor, the method comprising:
(a) introducing an initiator stream through an initiator nozzle into the reactor, the initiator stream comprising ethylene and an initiator compound;
(b) introducing an olefin stream through an olefin nozzle into the reactor, the olefin stream comprising ethylene and optionally a comonomer; and
(c) polymerizing ethylene and optionally the comonomer in the presence of the initiator stream in the reactor under high pressure polymerization conditions to produce an ethylene polymer;
wherein an amount of ethylene in the initiator stream based on an amount of ethylene in the olefin stream is from 0.01 to 2 wt. %; and
wherein the reactor is an autoclave reactor.