Converter flue gas full-dry cooling device and cooling method thereof

The invention discloses a converter flue gas full-dry cooling device and a cooling method thereof. The converter flue gas fully-dry cooling device comprises a converter flue (1), a tinder trapping device (2), a heat convection waste heat recovery device (3), a dry dust remover (4) and a fan (5). The converter flue gas fully-dry cooling device is provided with the tinder trapping device between theconverter flue and the heat convection waste heat recovery device so that tinder carried by converter flue gas can be removed at a temperature interval higher than 610 DEG C, and the hidden danger ofexplosion can be eliminated. 本发明公开了种转炉烟气全干式冷却装置及其冷却方法，所述转炉烟气全干式冷却装置包括依次设置的转炉烟道(1)、火种捕集装置(2)、对流换热余热回收装置(3)、干式除尘器(4)和风机(5)。该转炉烟气全干式冷却装置在转炉烟道和对流换热余热回收装置之间设置了火种捕集装置，从而能够在高于610℃温度区间清除了转炉烟气携带的火种，消除爆炸隐患。