Dale Wilborn - Chevron
The Chevron patented specially designed Coker drum inlet transition spool has the following features:
- No moving parts
- No steam injection
- No operator permissive or special procedural steps.
- Reduces water channeling, allows relatively even distribution to extend coke drum life.
The design has been in service since 2003 in El Segundo. The presentation will cover the history, the original Salt Lake and Pascagoula spool design issues and performance. The primary purpose of the resid inlet technique is to reduce the likelihood of coke drum damage – bulges, cracks and tilting (banana). Coke drum quench TI trends to infer water distribution are the best way to project future coke drum effects. Coke drum laser scans and other inspection techniques after a number of years in-service is the “report card”.