Pulverized coal-fired boiler and pulverized coal burning method

A pulverized coal-fired boiler efficiently supplies air to a central part of a furnace and the neighborhood of a furnace wall, thereby promoting mixture with combustion gas, and reducing both NOx and CO. The main after air ports are structured so as to jet air having a large momentum for enabling ar...

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Bibliographische Detailangaben
Hauptverfasser:	BABA AKIRA, ORII AKIHITO, TSUDA SHINJI, ORITA HISAYUKI, NOMURA SHINICHIROU, TADAKUMA SATOSHI, OKAZAKI HIROFUMI, YOSHIZAKO HIDEHISA, YANO TAKANORI, KAMIKAWA YUKI, OOYATSU NORIYUKI, SHIMOHIRA KATSUMI, KANEMOTO HIROAKI, KURAMASHI KOUJI, MINE TOSHIHIKO, TANIGUCHI MASAYUKI, KOBAYASHI HIRONOBU
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING BURNERS COMBUSTION APPARATUS COMBUSTION PROCESSES HEATING LIGHTING MECHANICAL ENGINEERING REGULATING OR CONTROLLING COMBUSTION WEAPONS
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Beschreibung
Zusammenfassung:	A pulverized coal-fired boiler efficiently supplies air to a central part of a furnace and the neighborhood of a furnace wall, thereby promoting mixture with combustion gas, and reducing both NOx and CO. The main after air ports are structured so as to jet air having a large momentum for enabling arrival at the central part of the furnace, and the sub-after air ports are structured so as to jet air having a small momentum to the neighborhood of the wall face of the furnace, and a sectional center of each of the sub-after air ports is within a range from 1 to 5 times of a caliber of the main after air ports from a sectional center of each of the main after air ports.