浅析脱硫旁路挡板铅封实施后联锁保护逻辑的完善

ANALYSIS ON IMPROVEMENT OF INTERLOCK PROTECTION LOGIC OF LEAD SEALED BYPASS DAMPER

根据国家环境保护部办公厅文件要求,需要对火电企业脱硫旁路挡板实施铅封。石灰石-石膏湿法脱硫工艺具有脱硫效果好、技术成熟等优点,在目前国内的燃煤发电机组中广为应用。旁路挡板作为连接主机与脱硫系统的关键设备,其正常投用不仅是脱硫系统能否正常投运的关键,更关系到脱硫系统本身甚至发电机组的安全。通过对旁路挡板联锁保护逻辑的分析,提出了实施旁路挡板铅封措施后旁路挡板的联锁保护措施的更改建议,使更改后的联锁保护逻辑更为完善。

According to the requirements of Ministry of Environmental Protection, thermal power enterprises need to ensure their bypass dampers lead sealed. Because of the advantages of excellent desulphurization performance and mature technology, wet flue gas desulphurization system now is widely used in coal-fired generating units. The healthy running of bypass damper, which is the key equipment in connection between generating unit and desulphurization system, relates to the safety of desulphurization system and even generating unit. The improvement advices of lead sealed bypass dampers interlock logics are proposed via the analy sis of interlock logics. All these should bring about more improvements for the interlock logic.