【正文】 tank cans cans back control from the injection of pulverized coal to blast furnace tuyere spray cans of control, stop the blast furnace pulverized coal injection control, security control procedures for the chain), and finally a detailed description of the specific operation. Tank feeding the middle: the middle of the preconditions can feed tank for the middle must be an empty signal, the pressure must be less than , emission valves in the open status, filling pressure valve, fluid valve, cone valve and the valve under the cone in the off state, intermediate between the cans and the cans are injection valve in the off state。 inverted cans, Bleeding Tundish valve clearance, the tank filling the middle pressure valve, intermediate pressure tank and the injection tank is less than set value, the filling valve shut down, open the two cans were pressure between the valve and open the next among the tank valve cone, the conejet on the tank valve, open the middle fluid tank valve, the middle tank feed air signals, the following operations, clearance of middletank flow valve, clearance under the middle of tank valve cone, the coneshaped tank clearance injection valve, filling tank clearance intermediate pressure valve, intermediate clearance between tank and tankpressure injection valve, the valve emission Tundish, pulverized coal injection in the middle tank to tank down the order can be pleted. Injection control: a prerequisite for blast furnace to be allow injection signal injection tank of not less than the minimum level to meet the security requirements of the chain, check the PCI manual control valves on the road, and entered into the normal。s SIMATIC S7 series of SIMATIC S7300sizefitsPLCCPU (6ES7 3152AG100AB0), analog I / O module (6ES7 3317KF020AB0), Digital Input I / O module (6ES7 3211EH010AA0 ), digital output I / O module (6ES7 3221HH000AA0) the selection and detailed data. Keywords: PLC。 sensor 目 錄 X 目 錄 摘 要 ........................................................................................................................ I Abstract.......................................................................................................................... II 詳細摘要 ...................................................................................................................... III Detailed Summary ......................................................................................................... V 1 前言 ........................................................................................................................... 1 高爐噴煤技術背景 ......................................................................................... 1 高爐噴煤的意義 .............................................................................................. 1 高爐噴煤基本流程 .......................................................................................... 2 噴吹技術的發(fā)展 .............................................................................................. 3 富氧大噴煤量技術 ................................................................................ 4 利用等離子大量噴吹煤粉 .................................................................... 4 復合噴吹技術 ........................................................................................ 4 粒煤噴吹技術 ........................................................................................ 4 我國噴煤噴吹技術 .......................................................................................... 5 我國噴煤噴吹技術現(xiàn)狀 ...................................................................... 5 我國高爐噴煤技術的進步 .................................................................. 6 我國高爐噴煤存在的問題 .................................................................. 6 我國高爐發(fā)展前景 .............................................................................. 7 2 高爐噴煤噴吹自動化控制整體方案 ..................................................................... 9 噴吹工藝及檢測點布置 ................................................................................. 9 工藝流程示意圖 ............................................................................................. 9 噴吹控制過程描述 ....................................................................................... 10 噴吹系統(tǒng)操作方式 ............................................................................. 10 噴吹過程描述 ..................................................................................... 11 3 設備選型 ............................................................................................................... 14 所用測量設備選型 ....................................................................................... 14 料位測量設備選型 ............................................................................. 14 目 錄 XI 溫度測量設備選型 ............................................................................. 16 壓力測量設備選型 ............................................................................. 16 氧含量測量設備選型 ......................................................................... 17 一氧化碳 測量設備選型 ..................................................................... 18 重量 測量設備選型 ............................................................................. 19 系統(tǒng)硬件配置方案 ........................................................................................ 20 總體配置方案 ..................................................................................... 20 SIMATIC S7300 通用型 PLC 簡介 .................................................. 20 CPU ..................................................................................................... 21 PS 307 電源模塊 5A 6ES7 3071EA000AA0 ................................ 25 模擬量輸入模板 SM 331 AI 8 179。DI 16120 VAC（ 6ES7 3211EH010AA0） ..............................................................