The Optimal Control Of Smoke And Air System In Sintering Waste Heat Power Generation

Energy, raw materials, water, land and other natural resources are anindispensable foundation for the existence of mankind. They are also an importantmaterial to ensure sustainable economic and social development. With economicdevelopment, the contradiction of resource becomes increasingly prominent. Theindustry of iron and steel is a highly intensive industry of material and energy. A largenumber of raw materials and energy is consumed, and a large number of pollutants aredischarged. After more than half of the material was put in, they become waste gas,solid waste or by-product output.As an important production process of iron and steel industry, sinteringproduction process discharges large amounts of medium-grade and low-grade wasteheat. It will not only bring environmental thermal pollution, and waste a lot of energy.To take advantage of waste heat which was taken away, the craft of sintering wasteheat power generation emerged. The craft of sintering waste heat power generation isa process that waste gas with high temperature from1segment gas hood and2segment gas hood of ring cooler was sent to the waste heat boilers. Superheated steamproduced by waste heat boiler is send to steam turbine generator to generate electricity.Because the fluctuation of flue gas in the production process of sintering is bigger,effective control of the smoke and air system is an important factor to ensure thesintering waste heat power generation stability.This article through the optimal control of smoke and air system in sinteringwaste heat power generation, in order to achieve ensuring the sinter quality andimproving the sintering waste heat power generation. Based on the control ofsintering machine waste heat utilization renovation project by a factory of iron andsteel, to analyze the craft of sintering waste heat power generation, to understand thewhole process, to analyze the difficult point of control in smoke and air system, and toanalyze reasonable and intelligent control algorithm based on actual field conditionsand long experience of field operators.This article uses PID control system based on fuzzy RBF neural network tocontrol the speed of circulating fan in smoke and air system. Because the system haslarge delay and disturbance, using Smith feed-forward control, in order to achieve theoptimal control of smoke and air system in sintering waste heat power generation.According to the experimental data collected in the field to get the mathematicalmodel of smoke and air system, and using M-files and Simulink of MATLABenvironment to simulate the mathematical model. Using feed-forward PID control, feed-forward fuzzy control, Smith feed-forward fuzzy control, PID control based onRBF neural network and PID control based on fuzzy RBF neural network to simulatesmoke and air system, and comparing the results of simulation. It can be concludedthat PID control based on fuzzy RBF neural network can achieve more stable resultthan other methods. It is able to adapt the system better, get a better quality of control,and can achieve better task of control. For the optimal control of smoke and airsystem in sintering waste heat power generation provide a reliable reference.