| 摘要 |
PURPOSE:To operate a blast furnace with minimum consumed energy by a method in which the minimum value of the function indicating the consumed energy in total process by applying the improved Nelder-Mead process, and the specially determined value of the variable satisfying said minimum value of the function is used as the index of the furnace operation. CONSTITUTION:The operative condition of a blast furnace to minimize the energy consumed in iron and steel making process operated by energy generated in its self and energy supplied from outside is obtained, and the blast furnace is operated by using said condition as an index. Then, blast temperature, blast humidity, fuel blown amount, nitrogen blown amount, oxygen blown amount etc. are used as variables x in the function f(x) indicating the amount of energy consumed in total iron and steel making process. Next, the upper and lower limit value of each of these variables, bosh gas amount, combustion temperature in front of tuyeres, estimated temperature of the furnace core and the limited value determined by others are as restriction conditions. Improved Nelder-Mead process is applied in the range which is capable of operation and is determined by these restriction condition. The minimum value of said function f(x) is obtained and the specially determined value of said variables (x) satisfying this minimum value is used as the index for the blast furnace operation. |
