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Circulating fluidized bed boilers in recent years has been widely used , the capacity has gradually increased , to enter the electricity market has been widely . Users of its higher performance and operation of the technical requirements , more concerned about their safety and stable operation . This article describes the Tongliao, Inner Mongolia Shengfa Thermal Power Plant 135MW 440t / h circulating fluidized bed design parameters and the entire boiler island system , and further describes the working principle and dynamic characteristics of the boiler . And in accordance with the actual operation of the unit ( boiler operation , the exhaust gas temperature is higher than the design exhaust gas temperature, main steam reheater steam temperatures up to less than the design value ) from the combustion of the boiler running depth study found that affect the exhaust gas temperature is a key factor - poor work performance ash than the actual running of the deviation from the design value , slagging difficult , the unit tail severe fouling of heating surfaces at all levels , plus sootblowers so that the overall heat transfer , mass transfer larger disorder is the cause of the working fluid heat absorption , reheat steam temperature is low , the exhaust gas temperature is high , mainly due to the primary . Targeted in the hot combustion adjustment and operating parameters optimized control a lot of practical advice and processing methods: from this lignite checking coals actual put into operation , with levels of granularity for the bed material , the bed hotbed pressure , anti- quantity, air volume ratio adjustment , through the analysis of the test data and lead to the boiler many practical problems for various reasons , to make the appropriate adjustment and optimization of measures and recommendations , by observation found that after running for some time , the the operational status of the unit has been significantly improved.
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