一 应遵循的主要设计标准 Main design criteria to be complied with: (1)大中型火力发电厂设计规范 GB40660-2011; Large and medium-sized thermal power plant design specification GB40660-2011 ; (2)小型火力发电厂设计规范 GB50049-2011; Small thermal power plant design specification GB50049-2011 (3)火力发电厂烟风煤粉管道设计技术规程 DL/T5121-2000; Technical code for design of thermal power plant air & flue gas ducts/ raw coal & pulverized coal piping