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Abstract

¡¡¡¡With the increasing awareness of energy conservation and environmental protection, inorder to further improve the energy consumption in the production process of steelmakingindustry, as one of the important links in the control of modern steelmaking industrialproduction process, the combustion control of sintering furnace, the control means are in urgentneed of improvement. Sintering is one of the key processes in the process of steelmaking. Asfar as the current situation is concerned, the energy consumption of the sintering process isrelatively large, and the sintering ignition control effect is relatively poor. The main reason isthat most of the sintering furnace temperature control system at the present stage controls thesintering temperature manually through manual operation based on work experience. Thecontrol effect of this method is not ideal, and the high energy consumption and serious pollutionlead to the insufficient combustion of blast furnace gas and the waste of energy. Therefore,under the premise of saving energy, it is very important to make full use of computer technologyand control technology to realize efficient automatic adjustment and control of temperaturecontrol system of sintering furnace, improve the combustion efficiency of blast furnace gas andreduce environmental pollution.

¡¡¡¡Based on the analysis of the sintering process characteristics of a sintering plant in AnshanIron and Steel Company, according to the analysis of the characteristics of the sintering process,in order to reduce energy consumption, save coal efficiently sintering temperature control, theblock diagram of the control system design and architecture and air-fuel ratio calculation model,the air-fuel ratio calculation model based on gas composition changes timely correction wascarried out on the sintering temperature to reduce energy consumption. The system adopts adistributed structure, and the lower computer of the system is mainly completed by a PLCcontroller. The PLC collects field data and regulates input and output instructions. The hostcomputer uses the self-developed Java-based management and monitoring software to realizethe optimal control of the air-fuel ratio. The software can view and store the field deviceparameters in real time, and can carry out the blast furnace gas composition and sinteringtemperature changes according to the air-fuel ratio calculation model designed in this paperAdjusted in time to achieve the best combustion control of gas and air, thereby improving thecombustion efficiency of blast furnace gas, reducing energy consumption, and reducing environmental pollution. The realization of the human-computer interaction function of thesoftware depends on the Java Swing architecture, which mainly includes six functional modulesof air-fuel ratio calculation, real-time control function, process flow, sintering temperaturecurve, data management and alarm. These modules can operate, display and calculate thecollected data, which can not only meet the design requirements but also reduce energyconsumption and improve gas utilization.

¡¡¡¡Finally, the software system was tested, and the results showed that the man-machineinteraction performance was good, the operation was simple, the parameter setting wasconvenient, the function could be completed according to the demand analysis, and theabnormal information could be timely alerted and recorded, so as to meet the requirements ofdetection and control. And put forward the system to improve the next step of the direction.

¡¡¡¡Key Words: Sintering furnace; reduce energy consumption; temperature controlsystem; calculation of air-fuel ratio; software design

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