Control System Design And Research On Primary Waste Gas In Shougang Jingtang Steel Plant

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.