Implementation Of HSIC Control System For Middling And Small Coal Boiler

In our country, many coal boilers are made and used each year .In recent years, with the awareness of environment protection becoming stronger and stronger, many local governments have been carrying out the work named "clean energy" , so , many coal boilers were transformed into oil or gas boilers in some degrees. But , because of the running cost of oil or gas boiler is higher than coal boiler , it was only small coal boiler which was transformed into oil or gas boiler at present , many middling and small coal boilers whose capacity are between 10 and 35 t/h is still running .It can improve their thermal efficiency and cut down the consume of coal and pollution to apply the advanced theory to the controll of these coal boilers.In this thesis , using the theoretical research and practical experience about boiler control of Lonfort company , we apply the Human Simulating Intelligent Control (HSIC) arithmetic , adopt the Object-Oriented Methodology, development an intelligent control system for middling and small coal boilers . This control system bases on industrial PC ,it has the functions such as controlling,displaying,printing,alerting,interlock,recording and inquiring and so on .It can be constructed conveniently in hardware and improved in software.The boiler control system includes water level control,overhear steam control,combustion control and so on..Compared with oil and gas boiler, the difficulty of coal boiler control is combustion control. The quantity of coal can not be exactly measured, moreover , the calorific capacity is different for different type of coal . So,it is difficult to exactly calculate the quantity of heat of coal. These factors bring about difficulty for combustion control of coal boiler. In this thesis, we research the combustion control of coal boiler using the HSIC arithmetica,and give the emulation result.