中国电机工程学报
中國電機工程學報
중국전궤공정학보
ZHONGGUO DIANJI GONGCHENG XUEBAO
2012年
8期
12-18
,共7页
鲁佳易%卢啸风%王虎%王泉海%何洪浩%甘露%赵鹏%唐秀能%雷秀坚%张文清%陈建斌
魯佳易%盧嘯風%王虎%王泉海%何洪浩%甘露%趙鵬%唐秀能%雷秀堅%張文清%陳建斌
로가역%로소풍%왕호%왕천해%하홍호%감로%조붕%당수능%뢰수견%장문청%진건빈
循环流化床%循环回路%分离器%外置式换热器后燃
循環流化床%循環迴路%分離器%外置式換熱器後燃
순배류화상%순배회로%분리기%외치식환열기후연
circulating fluidized bed external circulation loop cyclone external heat exchanger post combustion
利用自制的取样装置对引进300 MW循环流化床（circulating fluidized bed,CFB）锅炉外循环回路的烟气成分进行现场测试,研究了锅炉外循环回路中旋风分离器和外置式换热器的燃烧特性,结果表明：引进300 MW CFB锅炉的外循环回路存在显著的后燃现象,且后燃主要集中在旋风分离器上。分离器出口烟气温升可达135℃,分离器耗氧量占整个锅炉燃烧过程耗氧量的12%左右。外置式换热器内存在燃烧现象,且不同功能的外置式换热器的燃烧特性有着较大差异,用于调节炉温的外置式换热器耗氧量可达用于调节再热汽温的外置式换热器耗氧量的2倍。研究结果可为新锅炉的设计提供参考。
利用自製的取樣裝置對引進300 MW循環流化床（circulating fluidized bed,CFB）鍋爐外循環迴路的煙氣成分進行現場測試,研究瞭鍋爐外循環迴路中鏇風分離器和外置式換熱器的燃燒特性,結果錶明：引進300 MW CFB鍋爐的外循環迴路存在顯著的後燃現象,且後燃主要集中在鏇風分離器上。分離器齣口煙氣溫升可達135℃,分離器耗氧量佔整箇鍋爐燃燒過程耗氧量的12%左右。外置式換熱器內存在燃燒現象,且不同功能的外置式換熱器的燃燒特性有著較大差異,用于調節爐溫的外置式換熱器耗氧量可達用于調節再熱汽溫的外置式換熱器耗氧量的2倍。研究結果可為新鍋爐的設計提供參攷。
이용자제적취양장치대인진300 MW순배류화상（circulating fluidized bed,CFB）과로외순배회로적연기성분진행현장측시,연구료과로외순배회로중선풍분리기화외치식환열기적연소특성,결과표명：인진300 MW CFB과로적외순배회로존재현저적후연현상,차후연주요집중재선풍분리기상。분리기출구연기온승가체135℃,분리기모양량점정개과로연소과정모양량적12%좌우。외치식환열기내존재연소현상,차불동공능적외치식환열기적연소특성유착교대차이,용우조절로온적외치식환열기모양량가체용우조절재열기온적외치식환열기모양량적2배。연구결과가위신과로적설계제공삼고。
Gas concentrations of the external circulation loop in the imported 300 MW circulating fluidized bed（CFB） boiler were measured by self-made probes to investigate the combustion characteristics of the cyclones and external heat exchangers（EHEs）.Results implied that there was significant post combustion phenomenon in the boiler＇s external circulation loop,and most of the combustion was from the cyclones.The flue gas temperature at the cyclone outlet could be 135 ℃ higher than that at the cyclone inlet.The ratio of the O2 consumption in the cyclone to that of the whole combustion process in the boiler could be as high as 12%.With regard to the EHEs,the inside combustion phenomenon was not as severe as that in the cyclones.Obvious differences of gas concentrations were observed at the outlet between those EHEs with different functions.The O2 consumption of the furnace temperature adjusting EHEs could be twice that of the reheat steam temperature adjusting EHEs.These experimental results can provide information for the design of mew CFB boilers.
