球形Ni(OH)₂制备中pH在线检测及控制系统的设计和应用

来源期刊：有色金属2011年第2期

论文作者：李涛 陈飞彪 郭荣贵 傅钟臻 于丽敏 夏雯 蒋文全

文章页码：118 - 121

关键词：无机非金属材料； 球形Ni(OH)₂； pH在线控制； 组态软件； 可编程控制器

Key words：inorganic nonmetal material； spherical Ni(OH)₂； pH value online control； configuration software； programmable logic controller (PLC)

摘    要：在球形Ni(OH)₂制备过程中高盐度、高碱度、高温和强对流的环境因素导致pH电极稳定性降低,寿命缩短,pH参数检测和控制困难,为此采用反应釜外检测相对pH值的方法,设计pH在线检测装置和基于组态软件和可编程控制器的pH值在线控制系统,实现了pH值在0.02～0.05的微小波动范围测量,现场控制效果良好。

Abstract: During the preparation of the spherical Ni(OH)₂,pH meter may be influenced by some environmental factors,such as high salinity,high alkalinity,high temperature and strong convection.The stability and lifetime of pH meter would be shortened,and the determination and control of pH parameter are difficult.So a set of the online determination and control system of pH value are designed.The method determining the relative pH value outside of the reactor is introduced and the online determination device of pH value is designed.It implements the narrow-range fluctuation from 0.02 to 0.05 of pH valve.Meanwhile the control system based on configuration software and programmable logic controller (PLC) is designed and there is a good result in real-time.