OPERATIONAL STATUS OF 135MWe CFB BOILERS IN CHINA (英语论文).doc

OPERATIONAL STATUS OF 135MWe CFB BOILERS IN CHINA Abstract: CFB boiler technology has been rapidly developed in China and China has the largest installed number and capacity of CFB boiler in the world. The number of 135MWe CFB boilers is over 150. The operational performance of 135MWe CFB boilers was summarized in the article. And the reliability, economy, environmental protection index are also discussed in the article. It not only provides information of the development status of CFB industry, but also provides some experience and guidance to improve the operation and to further develop CFB combustion technology. Keywords: 135MWe, CFB boilers, status, performance, summary INTRODUCTION Over the past two decades, because of its three outstanding advantages: broad fuel flexibility, excellent environmental performance, large range of load adjustment, CFB boiler technology has being under rapid development and becomes an international acceptable commercial clean coal combustion technology (Lu et al.2006). CFB boiler has an irreplaceable position in Chinese boiler market. Up to now, the total number of CFB boiler operation is over 3,000, most of them are of small and medium capacity. The number of 410~480t/h(100~150MWe) CFB boilers is over 150 (Yue et al., 2006). CFB boilers are important for the improvement of the electric power supply structure. However, as the CFB boiler has only been adopted into coal combustion for less than 30 years and only is used power generation in recent years, many aspects are expected to be improved. The current status of the 135MWe is introduced in this paper. The aims of this paper are not only to provide information of the development status of CFB industry, but also to provide some experience and guidance to improve the operation and to further develop CFB combustion technology. RELIABILITY STATUS Reliability is the fundamental of economy. Low reliability has been one of the main depute topics in CFB boiler development for years. T