Real Time Efficiency Measurement In Utility Boilers - Remub: Project Summary

Abstract:

<p>The objectives of this project were; <bl> <li>To demonstrate that on-line Polycyclic Aromatic Hydrocarbon (PAH) concentration measurements can be used as quantitative indicators of utility boiler efficiency.</li> <li>To establish the methodology for using PAH detecting instruments to track changes in boiler efficiency and the combustion environment to enable better boiler management.</li> </bl></p> <p>This being achieved through; <bl> <li>Identification of a candidate instrument for measurement of PAH on-line and modify, if necessary, for use in pulverised coal-fired boiler gas ducts.</li> <li>The generation of PAH "tracers" under controlled combustion conditions at pilot scale.</li> <li>To build-up data set of PAH signatures as a function of combustion efficiency and boiler combustion conditions at pilot scale. <li>To conduct a full-scale boiler test series to supplement pilot scale data.</li> <li>Development of methodology relating PAH signatures to efficiency and combustion conditions, leading to prototype system.</li> </bl></p> <p>A literature survey was undertaken on the application of measurements of PAH from power plants as an indicator of combustion performance. In the publications considered it is generally found that there is a correlation of PAH with Carbon rendered useless by the components of the flue gasses.</p> <p>It was concluded that although the only equipment that is currently commercially available worked well enough at pilot scale, it was simply not robust enough for application at full scale.</p> <p>The results from the pilot scale investigations showed links between CO emission and degree of burnout and between CO emission and the levels of PAH detected. From this it is concluded that the link between burnout and PAH emission has been established for the rig used.</p> This summary provides information on: <bl> <li>Objectives</li> <li>Summary</li> <li>Background</li> <li>Experimental Results</li> <li>Conclusions</li> <li>Cost</li> <li>Duration</li> <li>Contractor</li> <li>Collaborators</li> <li>Further Information</li> </bl>

Author(s):

DTI