Addition of pollution control equipment (SCR, FGD, precipitators or mercury) requires significant changes to the air-gas side of a plant. Larger ID fans, adding booster fans or switching to balanced draft are all common modifications required to accommodate ever-increasing emission mandates. Using a dynamic plant model to analyze furnace draft is a simple and inexpensive method of ensuring that the proposed design is safe throughout the load range and will meet NFPA 85 code for positive and negative transient design pressures. This dynamic model can also be used to examine alternate control strategies that can mitigate potential furnace implosions.
Benefits
Identify hazardous issues before installation in the plant
Test various equipment configurations
Examine possible control solutions to minimize furnace pressure excursions
Confidence that due diligence was taken in selecting and sizing equipment
Risk analysis
Answer all "what if" questions
Ensure NFPA compliance
Furnace Implosion Process Model
Project Steps
Develop a dynamic model of the existing configuration
Validate the model against plant data
Add new or modified equipment and controls
Run new plant configuration through master fuel trips or other catastrophic equipment failures and monitor the furnace draft
Rest easy now that you’ve done your homework
Furnace Implosion Control System Model
Typical Transient Runs
Master fuel trip
Single or multiple fan trips
Axial fan stall
Backflow down the stack
Pressurized to balanced draft conversion
Control system malfunctions
Runaway equipment
ProTRAX has been used to perform furnace draft and implosion studies at numerous plants throughout the world. Contact us to find out how to use a proven simulation tool to assess your risk.
