To provide a temperature reducing tower low temperature region gas in which cooling water can be completely evaporated without being contacted with an inner wall of the tower even under an operation performed at a low temperature region.
An inner tower 15 is coaxially arranged in a lower inner side of an outer tower 11, and an upper end side of an annular clearance 16 formed between the inner tower 15 and the outer tower 11 is closed. A gas supplying port opened toward a direction of a tangential line of the tower wall is formed between the outer tower 11 and the inner tower 15. Cooling water atomizing nozzles 19 are arranged at the upper inner side of the inner tower 15, and an inner diameter d of the inner tower 15 is formed to be 0.55 to 0.65 times the inner diameter D of the outer tower.
AZUMA MASAHITO
NAKAI SHIRO
