Coking Coal Preparation And The Focus Of Process Control System Design And Realization

The precondition of coking process is a self-contained coal-preparation system, which transplants the mixed coal to tower as the source for coking. After coking, there is a coke-sifted system to sift the coke for different purposes. At the same time, it needs the dust exhaust system to realize pollution-free production. Then a new process control system pcs7 based on Totally Integrated Automation (TIA) is presented as the solution to the coal-preparation and coking process.Some problems based on the working flows of the coking process are analyzed and the control functions are put forward. Then the whole structure of the systems including the hardware and software frame is built. Through the plc networks, make up of a two levels computer control system using the protocol of CAN. Lastly, the embedded analyse is gone on from the aspects of control level and supervision level respectively.A new process control system pcs7 is adopted as the developing platform, real-time supervision systems are developed under windows and the industrial configuration software WinCC to get and store the data. The s7 automatic system as the control units realizes the process control, receives the local sensor signals with the distributed i/o. The real run results show that the system is designed dependably and practicably, which satisfies the industrial requirements.