PCC在碱回收蒸发工段中的应用

Application of PCC in Workshop of Alkali Reclaim Evaporation

为有效回收黑液中的碱,达到减少污染以及提高环保和经济效益的目的,针对碱回收蒸发工段的特点和控制要求,设计了一种基于PCC的碱回收控制系统。该系统的各控制站对数据进行处理,并使用工控机对系统进行上位监控。详细介绍了系统的硬件结构和软件设计。实际运行结果证明,该方案的控制效果良好,能有效地稳定黑液浓度,减少蒸汽消耗,为碱回收监控的高效化提供了良好的基础。

In order to effectively reclaim the alkali in black liquid to reduce pollution and enhance environmental protection and economical benefits,in accordance with the features and control requirements of the workshop section of alkali reclaim evaporation,the control system based on BR PCC for alkali reclaim has been designed.The data is processed in each control station of the system;and the system is monitored in high level using industrial PC.The hardware structure and software design are introduced in detail.The result of practical operation verifies that the control scheme receives excellent effects and effectively stabilizes the concentration of black liquid and decreases consumption of steam for providing good foundation of alkali reclaim efficiency.