After the coke has been quenched, it is delivered to a docking area near the blast furnace by a conveyor belt. If the coke is not properly quenched, then the conveyor belt may be overheated, and significant damage may result. The coke leaves the coke battery in the 2000 F / 1100 C range, and is cooled to near-ambient temperature using thousands of gallons of water. Occasionally, the quench water misses an area, and glowing-hot coke is placed on the conveyor. Damage to the belt will occur if the coke is not cooled to below 400 F / 200 C.
Benefits |
- A wide optical viewing area allows a single sensor to view the entire width of the belt.
- The Hot Slug Detector views through steam.
- Able to identify very small hot spots.
- Temperature and Rate-of-Change parameters may be used to alarm and to quantify the amount of water spray applied.
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A traditional infrared thermometer measures only the average temperature viewed. The Williamson hot slug detector provides a unique rate of change alarm upon the identification of a hot slug in addition to the average coke temperature. The unique wavelength and Auto Null technology provided by the Williamson sensor provides extra sensitivity to hot spots while minimizing the influence of heavy steam and dirty optics.
Technical Features |
- Auto Null Technology provides exceptional sensitivity to hot spots.
- Short wavelength of operation provides relative insensitivity to heavy steam and dirty optics.
- The NEMA4X sensor survives the harsh, often acidic environment associated with the coke plant.
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A large viewing area allows the entire width of the belt to be monitored by only one sensor. When hot coke is identified, a water spray is activated to cool the hot coke. A second Williamson sensor and spray is usually installed to confirm that the first spray adequately cooled the hot spot.
