In order to satisfy the high feed stability requirement in the synthesis of high-grade nickel ternary cathode material precursors,an automatic control system including feed pump package,synthesis reactor,DCS control system was designed.The system achieves precise control of amount of salt solution,ammonia alkaline solution and ammonia solution added,as well as stable control of synthesis reactor temperature and pH value by means of PID and cascade control strategies.Practical application results show that the system can ensure that the deviation of the proportion of the raw materials is less than 2％,the pH deviation is maintained at±0.02,and the temperature deviation is maintained at±0.5 ℃,which effectively improves the stability of the synthesis of the NCM precursor and the quality of the product.It has a significant effect on reducing the labour intensity and improving the production efficiency.
关键词
三元材料/合成/串级控制/PID控制
Key words
ternary materials/synthesis/cascade control/PID control
维普
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