Study To Operation Turning And Renovated Experimentation For The Imported W Flame Boiler Of 660MW Unit

The intention of this article is experimental study and exploration to the operation tuning and renovation regarding the problems found in the general commissioning and operation of the first imported 660MW unit with W flame such as insufficient mill output, higher AH inlet gas temperature and exhaust gas temperature than design value. The deficient mill output has been finally resolved by two renovation programs for the classifier and the central air pipe of D-12-D double-in and double-out mill, one of the biggest pulverizes; higher Ah inlet gas temperature and exhaust gas temperature also rectified by refractory modification and the tuning of sootblower' s running mode. As a result, the renovated boiler has been successfully put into commercial operation with various technical indexes up to design requirement.Through introducing the successful example, the article could hopefully furnish valuable references for the design, operation and commissioning of future large-scale W flame boilers in china.