单神经元PID控制在炼油装置塔顶pH控制中的应用

Application of Single Neuron PID Control in pH Control of Tower Top in Refining Units

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 u- nits. This paper analyzed the characteristic of pH control in the tower of refining units, because it will reduce the life of the equip- ment 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.