【作者】 杨兵；

【导师】 冯威；

【作者基本信息】 吉林大学 ， 工程硕士（专业学位）， 2017， 硕士

【摘要】 为新疆某热电站脱硝改造工程设计,该工程生化热源厂自备背压机组及环保设施改造项目,2011年7月29日国家环保部、国家质量监督检验检疫总局联合发布《火电厂大气污染物排放标准》(GB13223-2011),并于2012年1月1日正式实施。原有已建成锅炉必须进行一定程度的改造以达到新版烟气排放标准。因原有2×75t/h循环流化床锅炉属于已建成机组,改造相对比较困难,本次改造因工艺方案布局原因不适合采用SCR脱硝技术,故本次改造采用SNCR脱硝技术。现因厂内用汽负荷增加,现有锅炉无法满足用汽负荷,本工程属于新建机组,新版烟气排放标准对新建机组有更为严格的污染排放要求,因2×75t/h循环流化床锅炉采用SNCR烟气脱硝技术,本程1×220t/h高温高压循环流化床锅炉可以与2×75t/h循环流化床锅炉共用SNCR配套装置,故本工程采用SNCR/SCR混合烟气脱硝方式,既能充分利用有限资源又可以达到新版烟气排放标准。更多还原

【Abstract】 Design of denitration reconstruction project for a thermal power station in Xinjiang,The self heating back pressure unit and environmental protection facilities reconstruction project of the biochemical heat source plant,Ministry of environmental protection of China in July 29,2011,Jointly by the State Administration of quality supervision,inspection and quarantine issued 《fossil-fuel power plant atmospheric pollutant emission standard》(GB13223-2011).It was formally implemented in January 1,2012.The original built boiler must be modified to a certain extent to meet the new standard of flue gas emission.Because of the original 2 * 75t/h circulating fluidized bed boiler belonging to the unit has been built,the transformation is relatively difficult,because the transformation process arrangement not suitable for using SCR denitration technology,so the transformation by SNCR denitration technology.The factory is due to steam load increases,the existing boiler cannot meet the steam load,this project belongs to the new unit,the new version of flue gas emission standards for new units have more stringent requirements for pollution emissions,2 * 75t/h circulating fluidized bed boiler adopts SNCR flue gas denitration technology,the project of 1 * 220t/h circulating fluidized bed boiler with high temperature and high pressure 2 x 75t/h circulating fluidized bed boiler shared SNCR supporting device in this project adopts SNCR/SCR mixed flue gas denitration method,which can make full use of limited resources and can achieve the new emission standard.更多还原