Y4-73型D式锅炉引风机适用于大型火力发电厂中2~670t/h蒸汽锅炉的引风系统。本引风机输送的介质为烟气，温度不得超过250℃ ，引风机前必须加装除尘效率不低于85％的尘土装置。

It is suitable for making up the fanning and blowing system ofthe steam boiler for the fire power station beneath 2-67ot/h The media which the fan transferredis smoke and air. whose

highest temperature shall not exceed 250C Before installation, the fan must equip with the dust-removal fixture

whose dust removing efficiencv shallnot beneath 85%