Confidential Client
Midwest USA
Refining
Design Innovation Enhances Stability of FCC Furnace Draft Pressures by Mitigating Wind Effects.
Overview
A major refinery in Ohio requested The Nexus team to replace an existing fluid catalytic cracking (FCC) furnace since the existing furnace is nearing the end of its service life. A new furnace will also meet requirements for reducing nitrogen oxide emissions.
Challenge
During the design phase of the FCC Furnace, the team encountered discussions regarding the impact of wind on draft pressure readings. The draft pressure instruments, tied into the Safety Instrumented System (SIS), played a critical role in furnace operation and trip prevention. These instruments measured pressure within a narrow range of 1 to 2 inches of WC, with atmospheric conditions serving as the reference. However, wind disturbances often caused fluctuations in the readings, affecting both furnace efficiency and trip control.
Solution
To mitigate the impact of wind on draft pressure readings in the FCC Furnace, the Nexus team implemented innovative measures. By modifying the location and orientation of draft pressure transmitters and incorporating shielding mechanisms, they successfully reduced fluctuations caused by wind. The newly installed FCC Furnace draft transmitters demonstrated significantly improved resistance to wind effects, resulting in more stable pressure readings and enhanced furnace performance.
Services
- P&ID Development
- PSV Documentation
- Installation Drawings
- Stress Analysis
- Instrument Data Sheets
- Power, Control, and Instrumentation Plans
- Foundation Plans
About Nexus Engineering Group
Nexus Engineering Group is a full-service, independent engineering, procurement, and construction management (EPCm) firm headquartered in Cleveland, Ohio, with offices in Toledo, Ohio; Midland, Michigan; and Oak Brook, Illinois. Founded in 2005, Nexus partners closely with clients to support project goals from concept through startup, delivering practical, reliable solutions across the refining, petroleum midstream, chemical, manufacturing, power & energy, and renewables markets.
Nexus integrates engineering, procurement, and construction management services to help clients plan and execute complex projects with confidence. Through close collaboration and a client-first approach, Nexus supports informed decision-making, manages project risk, and delivers practical solutions that enhance safety, reliability, and long-term project value.
