Design And Implementation Of Pulverized Coal Injection Automatic Control Software

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 the 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 theprocess 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 2200m~3 BF in AnGang Iron Making Factory, this thesis researches the design and development of blast furnace coal injection automatic control software system.The PCI automatic control system based on software engineering has been proved to be successful and has good society and economy benefits. The model of pulverized coal measurement based on fluxionary calculus settles the problem of lacking of gas-solid phases measure instrument in production processing system, and is crucial to the stability of PCI. The project has characteristics of utilizing the new model of pulverized coal measurement, new production processing control mode, new developing method and waterfall model.Associating with the application environment of 2200m~3 BF PCI automatic control software system in AnGang Iron Making Factory and analyzing the characteristics of the PCI automatic control system in detail, a model of pulverizedcoal 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 Pro7.2 platform with PLC program tool and Object-Oriented method and component technique.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 Origin 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.