Drummond-GCT™ Water Cooled Hood
Factors affecting primary hood gas collection efficiency:
- Mouth angle
- Hood / door configuration
- System draft
- Infiltration rate
- Apron plate/hood gap
- Door/hood gap
- Hood geometry
- Hood cooling system
- Panel design
- Water velocity
- Downstream infiltration
- Physical condition of hood
Typical Primary Hood Problems:
- Converter mouth blowing angle is too close to vertical
- Door/hood joint is blasted by hot gas
- Door/hood joint is under positive pressure
- Excessive gas leakage
- To prevent leakage, the system draft has to be increased—this results in excessive infiltration
- Water leaks
- Corrosion
- Erosion
- Insufficient water flow/velocity
- Crane impacts
Moving the door joint out of the direct path of the process gas will improve gas capture.
Design advantages of Drummond-GCT Hood Design
- Simple, low cost fabrication
- Rugged, durable design
- Low maintenance costs
- No accretion build-ups
- Long panel life
- Easy installation
- Simple operation
- Closed circuit water system
- Minimizes evaporation and build-up of dissolved solids
- Reduces opportunity for oxygen entrainment minimizing internal corrosion
Primary Hood
