Design And Development Of The Pulverized Coal Injection (PCI) Automatic Control System In ShouGang BF

With the improving of the automation, the Iron & Steel Enterprises in our country has searched after lots methods of reducing energy and consumes in order to reduce the cost. Coal injection is'an effective method of reducing coke ratio and increasing benefits. The technology of coal injection has been developed and applied early in our country, but not on top in recent years. The quantity of coal injection has become larger and larger outside country and majority soft coal. Now, we have difference in many aspects from Japan and advanced countries in West Europe, and have the main question of low automatic control level which is the bottle neck of the BF's coal injection system running. The key of the automatic control level is the process controlling of the control software design and develop_in another words, we will gain better effect only developing and managing the control software system utilizing the software engineering ideas and according to the system principle. The automatic control system engineering of blast furnace (BF) coal injection is a critical aspect which affects the normally running of coal injecting system and whether it can fulfill the important task of cost reducing and efficiency increasing. Combined with the project of the pulverized coal injection (PCI) automatic control system of 3# BF in SHOUGANG Iron Making Factory, this thesis researches the design and development of the series Bunker blast furnace PCI automatic control system.Associating with the application environment of 3# BF PCI automatic control software system in ShouGang Iron Factory and analyzing the characteristics of the PCI automatic control system in detail, a model of pulverized coal measurement, which aiming at the solution of not according to the system engineering ideas and coal transportation instability of traditional PCI system and utilizing structured analyzing tools and Advanced Mathematics principles, is put forward in order to develop the whole system on Monitor VB platform with PLC program tool and Object-Oriented method and component technique.Based on software engineering design thinking of pulverized coal injection in the automatic control software was put into operation proved to be a good social and economic benefits:the use of multiple linear regression in which the principle of the design thinking of the amount of coal uniform stability control played a key role. The entire system with the application of new coal calculation model, the new process control methods, the development of new methods and follow the model falls under monitoring software and interface design features.The PCI automatic control system based on software engineering was proved to be successful and effective through the analyzing and researching of a mass of experiments data by the tool of Matlab after the system put into running. This subject offers a proper intercommunion platform for bringing the application of software engineering ideas into designing of the industrial control software.