选择性非催化还原脱硝技术在循环流化床锅炉中的应用

Application of Selective Non- catalytic Reduction Denitration Technology in Circulating Fluidized Bed Boiler

针对中国石化上海石油化工股份有限公司(以下简称上海石化)620 t/h循环流化床锅炉效率偏低及氮氧化物排放质量浓度不能达到环保排放标准的现状,在炉内燃烧脱硝技术的基础上,通过实施锅炉尾部烟气脱硝改造,采用当前先进的选择性非催化还原(SNCR)脱硝技术,进一步提该锅炉的脱硝水平。同时通过设计、模拟和应用的对比研究,总结出SNCR脱硝技术在循环流化床锅炉上使用的适应性和进一步提高效率的必要性。

In view that the productivity and concentration of NOxemission of the 620 t / h circulating fluidized bed boiler in SINOPEC Shanghai Petrochemical Co.,Ltd.（ hereinafter referred to as SPC） cannotmeet the environmental protection emission standards,the denitration performance of the boiler was improved though denitration process transformation of increasing the boiler flue gas,adopting the state- of- the- art selective non- catalytic reduction（ SNCR） technology on the basis of thedenitration technologyof in- boiler combustion. Meanwhile,through study of the technology in 7#boiler of Thermal Power Station of SPC,the adaptability of SNCR denitration technology in circulating fluidized bed boiler and the necessity of further improving efficiency were summarized.