... to the ceiling pipe, and the coal economizer. The hot water can be deviated from the exit of the coal economizer ... Technical parameters: 1) Rated heat efficiency: 29mW 2) Boiler hot water flow: 410.5MT/h 3) Boiler discharge pressure: 1.6MPa ... boiler consist of heating areas, metal parts and burning system parts. The heating area consists of drum, water-cooling wall system, roof tube, coal economizer ...