国华三河电厂飞灰基改性吸附剂脱汞技术研究

为了实现高效绿色发电、减少汞污染的排放，按照国家环保部《关于开展燃煤电厂大气汞污染控制试点工作的通知》要求，国华三河电厂在汞污染物排放浓度测试基础上，开展飞灰基吸附剂喷射脱汞技术试验。通过试验，验证飞灰基吸附剂喷射脱汞技术是可行的，是一种高效脱汞技术，能够在现有环保设施（脱硫、脱硝、除尘）联合脱汞基础上进一步降低烟气中汞排放浓度30%~50%，使综合脱除效率可达75%~90%，烟气中汞气体排放浓度远低于国家标准值，具有推广应用价值。

Study on Mercury Removal Technique using Modified Fly Ash Based Sorbents in Guohua Sanhe Power Plant

In order to achieve high efficient green power generation and reduce mercury emissions from coal-fired power plants, according to the requirements of “Pilot Experiment of Mercury Control in Coal-Fired Power Plant” issued by the Ministry of Environmental Protection of China, testings on mercury control technique with fly ash based sorbent spray are carried out in Guohua Sanhe Power Plant on the basis of mercury emission concentration measurement. Through the testing, the feasibility of fly ash based sorbent spray method is verified. As a technology of high mercury removal efficiency, it can lower the mercury emission concentration further by 30%~50% with the mercury removal efficiency reaching as much as 75%~90% by taking advantage of the existing pollutant control equipments such as desulfurization, denitrification, dust removal and mercury removal. In this way, the mercury emission concentration in the flue gas can be lowered down far less than the national standard. Hence, the application of fly ash based sorbent spray method shows a prospect of popularization.