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
- 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 and Secondary Hood
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