烟气污染物协同治理中的负协同效应串联作用现象

Serial Negative Synergy Effects in Synergetic Treatment for Flue Gas Pollutants

随着烟气污染物协同治理技术在燃煤电站的普遍应用,协同治理过程中各单元设备间的不良影响及其造成的设备治理能力下降或污染物增量排放现象日益显现,对此类负协同效应展开分析,并通过性能试验、检测化验、运行诊断等方法对某350 MW机组进行研究,结果表明:存在负协同效应串联作用现象,即上游设备的负协同效应不断蚕食本体或下游设备的污染物治理能力,最终导致设备治理能力不足。最后,提出控制及消纳负协同效应的建议。

With the applications of synergetic treatment technology for flue gas pollutants increasingly popular in coal-fired power plants,the adverse effects among individual equipment in the synergetic treatment process are becoming more prominent such that the decline of equipment capacity or incremental emission of pollutants are also observed.In this paper,such negative synergy effects are analyzed,and a 350 MW coal-fired power unit is studied by means of performance testing,laboratory testing,operation diagnosis and other methods.The results show that there exists serial negative synergy effects,that is,the negative synergy effects of upstream equipment continuously encroach on the pollutants treatment capability of themselves or downstream equipment,which eventually causes insufficient pollutants treatment capability.At last,suggestions on controlling and elimination of the negative synergy effects are also presented.