Optimized boiler designing method based on air cooling dry slagging technology

The invention discloses an optimized boiler designing method based on air cooling dry slagging technology. The optimized boiler designing method includes computing heat absorption capacity of an air side of an air preheater and flue exhausting temperature of a flue gas side of the air preheater during actual running according to disorganized leaked air generated by a dry slagging system when a boiler runs normally, further determining heat loss of a boiler system and obtaining reduction of heat efficiency of the boiler finally; and guiding selection of an air feeder according to the counted disorganized leaked air. The designing method can be used for designing the boiler, heat efficiency of the boiler can be guaranteed, simultaneously, air quantity of the air feeder of the boiler can be more reasonably determined, and accordingly purposes of improving running economical efficiency, reducing parameters of equipment, lowering manufacturing cost, reducing energy consumption, saving energy and reducing emission are achieved.