CONSIDERATIONS FOR FLARE GAS RECOVERY UNIT DESIGN AND OPERATION IN AN OLEFINS PLANT

摘要

In 2011, Flint Hills Resources installed a flare gas recovery unit at its Port Arthur Olefinsplant. This paper will discuss items that had to be considered to apply flare gas recovery in anolefins plant. The items discussed will include: how to get accurate flare flow andcomposition data to size the unit, how to manage intermittent flare streams with high volumeand high nitrogen content, controls for compressor staging and de-staging, handling ofhydrocarbon liquids that condense during compression, and lessons learned during startup andoperation.