HEAT EYE On-line measurement of the ash, moisture and nett Calorific Value
The Heat Eye is a new instrument providing second-by-second information on the Ash, Moisture and Nett Calorific Value (Nett CV) of conveyed coal. This gives the principal benefit of providing
higher quality product with a consistent Nett CV - with obvious savings in time and money.
It comprises a Bretby Gammatech Ash Eye (updated NGCQM) fully integrated with a Moisture Monitor (eg the
Callidan MA-500).
The Heat Eye contains no radioactive sources - it uses Natural Gamma and Microwave Technology.
The Heat Eye is our latest development in world-class coal monitoring.
Operation
The Heat Eye combines the instantaneous ash and moisture measurements to obtain an instantaneous
"total inerts" value. This total inerts value is converted into Nett CV by using a calibration based upon the correlation of total inerts with Nett CV previously measured by conventional means.
Accuracy
The accuracy of the Heat Eye will depend upon the site and the performance of each component sensor. Accuracy of (1σ) better than 1.0% on final product can be achieved.
Precision
Precision is in the order of 0.5-1.0% (Measured to ISO 15239)
Features
Real time graphical and numerical display of instantaneous ash, moisture & nett CV
Local numerical display of instantaneous ash and moisture
Simple secure menu driven operation
User-definable quality parameters
User configurable shift patterns
Optional batch operation
Comprehensive end of shift and batch reporting
User selectable graphical displays of archived trend information with user configurable overlays
Analogue output of any two measured parameters
Serial (RS232) output of measured parameters (up to 10km with long line drivers)
Automatic restart on restoration of power
Up to eight user nominated coal sources - switching being Automatic or Manual
Up to four automatically or manually activated calibrations
Applications
Washed coal
In blending control systems
Final Product Monitoring
Monitoring Power Station coals
Benefits
In blending control systems the good use of the Heat Eye information enables suppliers to produce a more consistent product, leading to higher financial proceeds. For example, this can be achieved by adjusting the ash content to counter uncontrolled changes in moisture to provide a product with a consistent Nett CV.
Furthermore, the Heat Eye information enables a supplier to adjust quickly and effectively the blend characteristics to meet the demands of customers requiring different Nett CV specifications.
In power station applications the Heat Eye information can be used to ensure the boilers are fed with fuel with a Nett CV falling within specification. This will ensure maximum boiler efficiency. In extreme cases, low CV material can be diverted from the boilers, thereby reducing downtime and the associated costs.
If you would like more information please download the
Heat Eye brochure.
Printed brochure available upon request.
