【作者】 张红军；

【导师】 石海彬； 王立华；

【作者基本信息】 东北大学 ， 控制工程（专业学位）， 2011， 硕士

【摘要】 本文以首钢京唐炼钢厂干法除尘系统为背景,结合首自信科研项目,对炼钢干法除尘控制系统进行设计研究。通过学习生产工艺、熟悉现场控制设备、解读控制程序,在掌握生产控制流程和设备控制参数后,结合现场实际工况对首钢京唐厂除尘生产进行工艺优化和设备改造。本文的研究内容主要包括以下几个方面：(1)电除尘原理和转炉炼钢生产的干法除尘生产工艺,比较了湿法除尘和干法除尘的技术参数和工艺参数,重点阐述了转炉干法除尘的工艺和干法除尘主要设备功能组。(2)从现场设备的控制参数入手,结合生产工艺流程,详细讨论了干法除尘系统控制。对蒸发冷却器、静电除尘器、除尘灰输送、煤气输送、煤气回收功能组的控制设备、设备运行条件、主要技术参数及HMI人机操作功能进行研究。(3)设计干法除尘系统软硬件。系统以西门子公司S7-400CPU实现设备的控制调节；用STEP7软件实现硬件的在线检测、诊断功能；人机控制界面采用WINCC组态软件,用于显示设备运行状态,对重要工艺参数作实时和历史趋势,并实现故障报警、报表打印,进行数据设定和操作显示等功能。(4)PLC控制程序设计。按照设备的重要程度和功能,设计各个功能块的作用、执行频率、调用关系。详细讨论了蒸发冷却器的PID控制,通过对PID的算法的研究,修正PID控制参数。(5)结合日常维护工作中的常见故障,对常见故障的设备提出维护方法和预防方案,并对部分工艺进行改进,对设备进行改造。通过对干法除尘系统的研究,掌握生产工艺和工艺参数,理顺了控制程序和连锁条件。提高了维护队伍的技术水平,为工艺优化和设备改造创造了条件,为公司的技术输出打下基础。更多还原

【Abstract】 In this paper, have a research on the control system of primary waste gas base on production process of Shougang Jingtang Steel plant, at the same time have a research project about dry dedusting of Shougang Automation Information Technology Company Limited. Through the study of the production process, familiar with field control device, reading control program, master control process and control parameters, we have some process optimization and equipment modification combining with the actual conditions after know how it’s work.The main content of this paper includes the following aspects:Firstly, described the principle of electric dust collector and electric dust collector in steelmaking converter, compared with the parameters of OG and LT method, elaborated with process and equipment functional group of LT method.Secondly, start from the field device and combination with parameters of the production process, some control functions of the system are described in detail, including technical parameters, equipment operating conditions and HMI man-machine function on the evaporative cooler, electrostatic precipitator, dust removal ash conveying, gas transportation, gas recovery and functional group.Thirdly, design hardware and software of the control system for gas dry dedusting system. Introduced the functions of siemens product briefly, S7-400PLC have the fuction of on-line detection, control, regulation and diagnostic;monitoring machine adopts WINCC6configuration software, used to display the running state of the equipment, the important technological parameters for real-time and historical trend, and fault alarm, report printing, data set and operation display and other functions. To describe the technical principle, control method and application characteristics, and discussed in the dust production in rats.Finaly, design control program of the PLC, analyzes call relation and frequency of execution each function block according to the important degree of equipment and function, PID control functions of the system are described in detail. Have some process optimization and equipment modification combined with the common faults in the maintenance work.Through this article on the dry dedusting system research, master the process structure of the blind spots and to straighten out the control program in doubt, for process optimization and transformation equipment to create the condition, at the same time as the company’s technical output to lay the founda.更多还原