PRESSURE RELIEF FOR MULTIPLE POLYOLEFIN POLYMERIZATION REACTORS

摘要

A polyolefin manufacturing system and method including polymerizing olefin in a first reactor to form a polyolefin, transferring the polyolefin to a second reactor, polymerizing olefin in the second reactor, and discharging a product polyolefin from the second reactor. The system and method including operating the first reactor with a first reactor pressure relief system and the second reactor with a second reactor pressure relief system, both pressure relief systems to discharge to a flare system, and wherein a relief instrumented system (RIS) is configured to direct at least one process interlock that mitigates an excess reaction scenario as an overpressure relief scenario.

主权项

1. A method of operating a polyolefin manufacturing system, comprising:
polymerizing olefin in a first reactor to form a first polyolefin; transferring the first polyolefin to a second reactor; polymerizing olefin in the second reactor to form a second polyolefin; discharging a product polyolefin from the second reactor, the product polyolefin comprising the first polyolefin and the second polyolefin; and operating the first reactor with a first reactor pressure relief system and the second reactor with a second reactor pressure relief system, both pressure relief systems configured to discharge to a flare system; wherein the polyolefin manufacturing system comprises a relief instrumented system (RIS) configured to direct at least one process interlock that mitigates an excess reaction scenario of the first reactor or the second reactor, or both, as an overpressure relief scenario.