Analysis Of Long Term No Emission Data From Pulverized Coal Fired Utility Boilers

Author :
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ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (16 download)

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Download or read book Estimation of NO3 Emissions from Pulverized Coal-fired Utility Boilers. Final Report written by and published by . This book was released on 1995 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: The formation of nitrogen oxides (NO3 during pulverized-coal combustion in utility boilers is governed by many factors, including the boilers̀ design characteristics and operating conditions, and coal properties. Presently, no simple, reliable method is publicly available to estimate NO3 emissions from any coal-fired boiler. A neural network back-propagation algorithm was previously developed using a small data set of boiler design characteristics and operating conditions, and coal properties for tangentially fired boilers. This initial effort yielded sufficient confidence in the use of neural network data analysis techniques to expand the data base to other boiler firing modes. A new neural network-based algorithm has been developed for all major pulverized coal-firing modes (wall, opposed-wall, cell, and tangential) that accurately predicts NO3 emissions using 11 readily available data inputs. A sensitivity study, which was completed for all major input parameters, yielded results that agree with conventional wisdom and practical experience. This new algorithm is being used by others, including the Electric Power Research Institute (EPRI). EPRI has included the algorithm in its new software for making emissions compliance decisions, the Clean Air Technology Workstation.