A design of combustion Control System of Circulating
Fluidized Bed Boiler on the plc controled
Abstract
Nowadays the boilers are still an important component among various power equipments in industrial enterprises.Along with the fast development of modern industry, high efficient energy utilization is pursued more and more.And the boiler are a kind of primary
equipments for converting raw energy into secondary energy, so their control and supervision is very important for promoting energy utilization efficiency. But in advanced control our country, only some big and medium-sized boilers have adopted technique. Most boilers being used by medium and small enterprises, are controlled by meter/relays, or even manually. That can not meet demand. In this paper, a control system scheme of PLC+IPC is proposed, which is aiming Circulating Fluidized Bed Boiler.
An advanced Circulating Fluidized Bed Boiler control technique composed of PLC, and communication are detailly described with respect to theory and application in thispaper, which is based on combustion Control System of Circulating Fluidized Bed Boiler on the plc controled in certain plant.The S7-300 series PLC of Siemens Company is adopted in the boiler control systems. The Step 7 programming software is used to design the ladder chart, the STL language .
Key words: Circulating Fluidized Bed Boiler ,PLC, Step7 Micro /WIN32 V4.0