The Design And Realization Of Automatic Control System Of Coal Preparation Plant Thickener

Coal Slurry Treatment at the session concentrated pool of treatment effect will directly affect the coal preparation plant productivity, while also Preparation Plant slime water purification degree of environmental protection a key factor.Aiming at the coal preparation plant slime water dosing systems, dosing links with large time delays, human experience error is large, it is difficult to establish the mathematical model and other factors, led to the scene cannot be based on concentrated pool of slime water changing nature and timely adjust dosage. Detailed coal slurry link research in the field and on the basis of in-depth analysis, taking into account the actual scene process link coal slurry dosing requirements, paper Siemens S7-300 series PLC hardware platform designed feedforward control strategy and fuzzy PID control strategy to achieve slime water dosing automatically adjust the system to meet the actual site control requirements. Among them, the relationship between concentration and slime water Overflow optimal dosage between the obtained control strategy feedforward mathematical model, based on field experience is also designed to adjust the rules of the fuzzy PID control, gives the entire dosing system control strategy. Final design concentrated pool automatic PC interface drug system so site operators to easily understand and analyze the health of the entire dosing process.This paper concentrates pool automatic dosing system capable of Coal Slurry Treatment is currently part of the automatic control and actual reference value..