摘要
分析市政污泥耦合燃煤电厂发电的政策形势和应用现状,总结市政污泥耦合燃煤电厂发电工艺流程中的关键因素,包括含水率、热值、含砂率、污泥干化和耦合焚烧过程中重金属、二噁英等污染物的产生和抑制方法,并对比各种市政污泥深度脱水及干化工艺的优缺点。对煤粉锅炉和循环流化床锅炉耦合市政污泥的技术路线进行对比,进而分析了耦合污泥对不同炉型发电工艺的影响。研究结果表明:为更好地实施市政污泥耦合燃煤发电项目,应减少污泥中的含砂量,降低干化设备和锅炉设备的磨损;同时对耦合燃烧产生的飞灰和炉渣进行实时监测和治理,减少二次污染;创新协调水务企业、燃煤发电企业、电网企业和政府关系,保证项目技术经济性。
By analyzing the policies and application status of municipal sludge combustion technology coupled with coal-fired power plants,the key factors affecting the co-combustion technology can be summarized as water content,calorific value,sand content,sludge drying and suppression methods for heavy metals,dioxins and other pollutants generated from the co-combustion process.The advantages and disadvantages of various deep dehydration and drying processes for municipal sludge are compared.The technical routes of municipal sludge combustion respectively coupled with pulverized coal boilers and circulating fluidized bed boilers are compared,and the influences of sludge'coupling on different boilers'power generation processes are analyzed.The results show that,to implement the projects of municipal sewage sludge combustion coupled with coal-fired power plants effectively,the sand content in sludge should be reduced in order to alleviate the wear of drying equipment and boilers.Meanwhile,the fly ash and slag produced from the co-combustion should to monitored and treated to control the secondary pollution.Furthermore,innovative cooperation relationship should be built between water services companied,coal-fired power plants,power grid enterprises and government sectors,to ensure the technical and economic performances of the projects.
作者
陈全喜
付江涛
CHEN Quanxi;FU Jiangtao(Wuhan Tianhe Technology Company limited,Wuhan 430010,China;State key Lab of Precision Blasting,Jianghan University,Wuhan 430056,China;HubeiKey Laboratory ofBlasting Engineering,Jianghan University,Wuhan 430056,China;Hubei(Wuhan)Insititute of Explosion Science and Blasting Technology,Jianghan University,Wuhan 430056,China)
出处
《华电技术》
CAS
2021年第10期50-60,共11页
HUADIAN TECHNOLOGY
基金
国家自然科学基金项目(51574185)。
关键词
市政污泥
污泥耦合发电
二噁英
污泥直接掺烧
耦合掺烧
循环流化床锅炉
municipal sludge
power generation coupling sludge combustion
dioxins
co-combustion of dried sludge
circulating fluidized bed boiler
