CHAIN TRANSFER AGENT REMOVAL BETWEEN POLYOLEFIN POLYMERIZATION REACTORS

摘要

A system and method for polymerizing olefin in the presence of a chain transfer agent in a first reactor to form a first polyolefin, discharging from the first reactor a transfer slurry having the first polyolefin and the chain transfer agent, and processing the transfer slurry in a separator to remove chain transfer agent and to provide a fluff slurry having the first polyolefin and a lower content of chain transfer agent than in the transfer slurry. The system and method provide for feeding the fluff slurry to a second reactor, polymerizing olefin in the second reactor to form a second polyolefin, and discharging from the second reactor a slurry having the second polyolefin.

主权项

1. A polyolefin reactor system comprising:
a first polymerization reactor configured to polymerize olefin monomer in the presence of a chain transfer agent, and to discharge continuously a transfer slurry comprising a first polyolefin and the chain transfer agent; a separation system configured to receive the transfer slurry and to discharge a recycle stream comprising the chain transfer agent, and to discharge continuously a fluff slurry comprising the first polyolefin; and a second polymerization reactor configured to receive the fluff slurry from the separation system and to discharge a product slurry comprising a second polyolefin.