pH是过程工业中一个常见的控制对象,尤其在炼油装置中对pH的控制尤为重要.文中先分析炼油装置塔顶pH的控制特点,若pH控制不好会对设备产生严重的腐蚀,这样导致设备的寿命有所下降,更影响炼油质量.再通过仿真得出合理的控制算法,能有限减小pH滞后带来的影响.最后通过PLC的编程,实现对整个系统的控制,使改进的算法在实际中得到很好地应用,可有效解决炼油装置塔顶pH控制难的问题.%pH is a common controlled parameter in the process industry,and especially it is very important in the refining units.This paper analyzed the characteristic of pH control in the tower of refining units,because it will reduce the life of the equipment at the corrosion station without being controlled well,especially influence the quality of petroleum products.Then the paper came up with a better control method according to the simulation between the common and the improved single neuron PID control which could reduce the influence from the long delayed pH value.A better method was used well in the reality with the help of PLC controller to solve the problem of the pH control of the tower top in refining units well.
展开▼
