|
Blast furnace top gas pressure recovery turbine power generation unit (Top Gas Pressure Recovery Turbine Unit, TRT) is now internationally recognized as a valuable secondary energy recovery. No fuel due a TRT apparatus in operation, without changing the gas quality, does not affect the use of recycled considerable energy to purify the gas, reducing noise, reducing the cost of smelting, is a typical high efficiency energy saving device. But TRT device into a prerequisite to ensure the stability of the blast furnace top pressure, the metallurgical enterprises and research departments to promote the use of the TRT device at the same time, have to control the blast furnace top pressure stability as an important work to research and development. This article is formed in the transformation on the Shougang Qiangang 2 # TRT control system, based on the actual requirements of the production, the data processing system of the original system to switch to the fuzzy expert system control; coherence to keep the system operating with ABB DCS control system instead of the the original Symphony Rack system. In this paper, the stability requirements of the blast furnace top pressure control, the top pressure stability factor analysis, the establishment of the TRT system architecture model and the identification of the model parameters to the the static vane opening, and the bypass valve opening control object, blast furnace top pressure blast furnace top pressure control for the control variables of the model, the balance control equation of the pipeline system, the dynamic transient analysis of piping systems, and computational analysis of the stability of the control of the top pressure for the control of The system design provides a theoretical basis. This article describes the development of expert systems, expert systems, expert system construction step, the advantages of expert system and classification, on this basis, the controller design of fuzzy expert system to improve the control effect, while enhancing the robustness of the controller nature, for on-site use of transformation provides a theoretical basis, and in accordance with the parameters of the impact of the blast furnace top pressure, the design of blast furnace top pressure prediction fuzzy expert system. Finally, the design of the of TRT system control system, including a sequential logic control system, feedback control system and the process monitoring system. Characteristics of ABB DCS system, control system hardware design, such as Process Control CPU configuration, project L / O module configuration and hardware parameters configuration, the control system software design, such as monitoring software design, process control software design. Transform the system into production, significantly improve the control effect, the indicators have reached the same industry leading level.
|