Design And Realization Of Ammonium Nitrate Solution Storage Tank Control System In Emulsion Explosive Production Line

Ammonium nitrate is one of the main raw material for manufacturing emulsion explosive,for a long time,most domestic industrial explosive production enterprises are using solid ammonium nitrate,after crushing,heating,dissolving process so as to obtain ammonium nitrate aqueous solution before put into production.If manufacturing emulsion explosive using ammonium nitrate solution directly,not only can reduce the production process,improve production efficiency,reduce the labor intensity of workers,also can save cost,saving energy and reducing consumption,improve the production environment and enhance the level of the nature of the explosives production safety.Source of shao guan emulsified explosive production line in a chemical plant,this paper mainly studies the ammonium nitrate solution the design and implementation of automatic control system of ground station storage tanks.First of all,the process of ammonium nitrate solution storage tank system,puts forward the main problems,find out the process control,the specific control requirements.Secondly,the hardware of the control system is selected reasonably,and the selection of the controller and the distribution of the I/O point are emphatically analyzed.Then,the software design of the control system,the external wiring diagram of PLC,the flow chart of the main program control are drawn.The fuzzy PID control algorithm used in the temperature control of ammonium nitrate solution is introduced,and the fuzzy PID controller is designed and simulated.Finally,the system debugging,including information acquisition point debugging,temperature control algorithm debugging and control system test.Finally achieved the design of tank temperature intelligent control,solves the tanks in nitrate concentrations of ammonia solution is heated and uneven,improve the level of manufacturing the essence of emulsion explosive safety,produce remarkable economic benefit and social benefit.The article highlight the bright spot is the S7-200 PLC as the basic control unit,using fuzzy PID control algorithm,realize the temperature control of the ammonium nitrate solution.This guarantee in manufacturing emulsion explosive,on the basis of the best temperature required and effectively avoid the temperature overshoot and bring security hidden danger,fully reflects the control system of the intelligent level,in the industrial explosive industry has a good prospect of popularization and application.