Design and performance verification of a 62-MWt CFB boiler

The present paper discusses the goals and methods of design of a circulatin g fluidized bed (CFB) boiler: A 62-MWt (75-T/h) CFB boiler was designed man ually using experience and available published data. The design was regener ated by an Expert System for evaluation and confirmation of the manual desi gn. Design choices and resulting surface areas from these two approaches we re compared and validated. Final confirmation of the design can be obtained only from operation of the boiler The boiler was built and commissioned in the Jiangshu Province, China, firing the design coal. A comprehensive test program was undertaken to monitor the performance of the boiler. Predicted performance from both the manual design and the Expert System is compared with those measured in the boiler. A reasonable agreement between the predi cted performance and measured values was obtained which confirmed both expe rience-based design decision and that from the Expert System.