The invention provides a sectional
soft water closed circulation cooling
system of
blast furnace body, which belongs to the technical field of cooling of iron-making furnaces. The
system comprises an upper cooling area and a lower cooling area; the lower cooling area comprises a lower
soft water supply main, a lower cooling equipment circular
water supply pipe, a furnace
bottom water cooling pipe circular
water supply pipe, a lower cooling equipment small water inlet
branch pipe, lower cooling equipment, a lower cooling equipment small backwater
branch pipe, lower cooling equipment circular backwater pipe, a furnace
bottom water cooling pipe, a furnace
bottom water cooling pipe circular backwater pipe and a lower
soft water return main; the upper cooling area comprises an upper soft
water supply main, a main control valve, an upper cooling equipment circular water supply pipe, an upper cooling equipment small water supply
branch pipe, a
small branch pipe control valve, upper cooling equipment, an upper cooling equipment small backwater branch pipe, an upper cooling equipment circular backwater pipe and an upper soft water return main. The sectional soft water closed circulation cooling
system has the following advantages: the cooling systems of the upper area and the lower area are completely independent, thereby preventing mutual hampering between the upper area and the lower area; so it is guaranteed that the
water volume in the cooling equipment is uniformly distributed, cooling effects are improved, and the service life of the cooling equipment is prolonged.