摘要
针对轮船尾气、工业燃煤等排放的二氧化硫对环境的影响,将可编程逻辑控制器(programmable logic controller,PLC)与碱液脱硫技术相结合,设计了操作简单、实时监控、运行稳定、易于移植的烟气脱硫控制系统。上位机采用西门子组态软件WINCC,实时监控系统运行,存储系统数据,并显示报表、曲线、报警等信息。下位机采用西门子S7-300 PLC,通过STEP7编程实现了对碱液配制与脱硫喷淋的模糊PID控制。经过实验调试,系统运行稳定,通信良好,各项性能指标达到实际要求。
Combining the programmable logic controller （PLC） with lye desulfurization technology, a simple, real- time monitoring, easily transplanted and stable flue gas desulfurization control system is designed based on the environmental impact of sulfur dioxide from the ship exhaust and industries firing the coal. The upper computer uses the Siemens configuration software WINCC, which can monitor system＇ s real-time operation, store system＇ s data and display the reports, curves, alarms and other information. The lower machine uses Siemens S7-300 PLC, achieving fuzzy PID control for lye formulation and desulfurization spray through the STEP 7 programming. After experimental testing, the system is stable and in good communication. The performance indicators basically meet the requirements.
出处
《现代化工》
CAS
CSCD
北大核心
2014年第1期149-151,153,共4页
Modern Chemical Industry
关键词
PLC
脱硫
控制系统
programmable logic controller
desulfurization
control system
