摘 要摘 要本次毕业设计主要阐述了高炉喷煤喷吹自动化控制系统，不包括制粉过程的控制，控制范围是从煤粉仓、中间罐、喷吹罐、喷吹总管、由炉前煤粉分配器到喷吹支管的自动控制过程。本次毕业设计只考虑了一个喷煤喷吹序列作为控制对象。本次设计包含：课题本身的背景、由来、意义、主要工艺类型、国内外高炉喷煤喷吹技术的发展现状以及对未来发展的展望；阐述了所需传感器、阀、开关等硬件设备，主要进行了煤粉从煤粉仓到中间罐倒罐控制，煤粉从中间罐到喷吹罐倒罐控制，煤粉从喷吹罐喷到高炉风口中的控制，停喷控制，中间罐和喷吹罐的压力控制，煤粉仓、中间罐及喷吹罐温度、压力的安全连锁控制，喷吹风压力的自动测量等控制项目；本设计主要选用的 PLC 控制系统的选型、硬件配置选择、I/O 表编写、硬件接线图的绘制的工作。关键词：PLC；高炉喷煤；传感器IAbstractAbstractThe graduation project focused on the automatic control of blast furnace coal injection system, does not include coal grinding process control. Cntrol the process of automation and control, includingo coal powder storage warehouse, the middle tank,the injection tank, injection Explorer, front-end from the blast furnace coal injection powder distribution device to the branch pipe. The graduation project, a PCI only consider as a controlled injection sequence. The design includes: That the issue of background, origin, meaning, the main type of technology, at home and abroad PCI jet technology development prospects and the future development of. On the need for the sensors, valves, switches and other hardware equipment.Mainly carried out coal powder from the coal powder position to control the middle of the tank,pulverized coal injection in the middle tank to tank can back control from the pulverized coal injection into blast furnace tuyere spray cans of control, stop the injection control, the middle tank and the injection pressure control tank, coal stores, intermediate and spray cans blow...
