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Show American Flame Research Committee International Symposium September 30,1996 Goudey Station Experience This section will describe the experience of applying the prototype InEe 1M system at NYSEG's Goudey Generating Station. Goudey station went into selVice in 1951 and is an 80 MW tangentially fired CE boiler. The boiler is supplied with coal from 4 pulverizers and the coal enters the boiler through 16 burners. Each mill supplies coal to a level of 4 burners. Secondary air is supplied to the boiler through 9 air ports: 4 coal air ports and 5 auxiliary air ports (located above and below each burner). A description of the InEe 1M system installation at Goudey station was presented in [1] and will not be discussed here. The NOx model installed at Goudey station, models NOx in ppm and has demonstrated an average error of 12 ppm, approximately 3%. In addition to proving that the InEC 1M system could control NOx effectively, this demonstration identified features that needed to be included in the next application of the InEC 1M system. These additional features include: 1) the ability to recognize different fuels; and 2) on -line model retraining. Since Goudey currently operates as a cycling unit during the ozone season, an automatic control version of the InEe 1M system is under consideration. A cost savings estimate for the InEC 1M system installed at Goudey station was presented in [1]. This estimate showed that the InEC 1M system could lead to a cost savings of approximately $60,000 per year for a plant similar to Goudey. Kintigh Station Experience The next installation of the InEC 1M system was Kintigh station. Kintigh station was selected since it would represent the greatest challenge to the InEC 1M system. Kintigh is the major NOx emitter on the NYSEG system subject to the daily cap and is the primary unit for achieving compliance with the cap. For this reason, Kintigh had already made significant progress in developing operational practices for reducing NOx' Kintigh was already utilizing a thermal performance advisory program that has enabled it to become one of the most efficient units in the nation equipped with a FGD unit. This section describes the experience of applying the InEC 1M system at NYSEG's Kintigh Generating Station. Kintigh station went into service in 1984 and is a 680 MW opposed wall-fired B&W boiler. The boiler is supplied with coal from 6 CE pulverizers and the coal enters the boiler through 48 burners which have 3 manual control settings each. Each mill supplies coal to a row of8 burners, with 3 rows of burners on one side of the boiler and 3 rows of burner on the other side( as depicted in figure 3). Each burner row receives secondary air through a compartmentalized windbox which enables control of secondary air to each row. Baseline Control Methodology Before the InEC TM system was available, 1995 provided significant challenges in complying with the seasonal daily NOx cap. Kintigh station was called on to implement Level I or Level II NOx reduction strategies 50% of the time during the 1995 ozone season. After extensive testing and experimentation over a 6 month period in anticipation of and during the ozone season, Kintigh engineers developed a set of NOx control procedures which - 4- |
