Abstract
For the control of the liquid level of liquid ammonia in thermal power plant’s ammonia vaporization room, traditional PID controller parameter tuning is difficult to adapt to complex control systems, the setting of the traditional PID controller parameters is difficult to adapt to the complex control system. For the disadvantage of bad parameter setting, poor performance and so on the fuzzy adaptive PID control is proposed. Fuzzy adaptive PID control combines the advantages of traditional PID technology and fuzzy control. By using the fuzzy controller to intelligent control the object, the performance of the PID controller is further improved, and the control precision of the system is improved[1]. The simulation results show that the fuzzy adaptive PID controller not only has the advantages of high accuracy of PID controller, but also has the characteristics of fast and strong adaptability of fuzzy controller. It realizes the optimization of PID parameters which are in the optimal state, and the maximum increase production efficiency, so that are more suitable for nonlinear dynamic system.
Highlights
Coal is the main energy source of our country nowadays and the future
Liquid ammonia gasification is an important part of the thermal power plant denitration process hat[3]
The safe operation of the liquid ammonia gasification directly affects the safety of the whole thermal power plant
Summary
Coal is the main energy source of our country nowadays and the future. When coal is burned in the boiler, sulfur and nitrogen oxide waste gas can be generated. Nitrogen oxides are one of the key reasons for the regional air pollution. The vast majority of the thermal power plant is equipped with low nitrogen combustion technology in our country, but the denitration efficiency is low. Liquid ammonia gasification is an important part of the thermal power plant denitration process hat[3]. It is the first condition of ensure the normal operation of denitration. The safe operation of the liquid ammonia gasification directly affects the safety of the whole thermal power plant. To study advanced the application of DCS to control the denitration liquid ammonia vapors, improve the stability of the system is running safety is even more necessary, at the same time there is a growing concern of atmospheric pollution control is of great significance. PID control in the process of liquid ammonia, improve the efficiency of liquid ammonia vaporization and to meet the requirements of safety and process constraints, making the key points of each control to achieve the optimization and for the denitration follow-up work well enough ammonia gas supply, achieve the denitration efficiency maximization
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