城市污水污泥与生物质共气化资源化利用实证研究  

Demonstration Study on Co-gasification of Sewage Sludge and Biomass for Reclamation Utilization

作　　者：任少辉 姚学同 余桥 张立民 向家涛 林立 张世红[1] REN Shao-hui;YAO Xue-tong;YU Qiao;ZHANG Li-min;XIANG Jia-tao;LIN Li;ZHANG Shi-hong(State Key Laboratory of Coal Combustion,School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Hubei Green Development Technology Co.Ltd.,Wuhan 430000,China;Henan Urban and Rural Planning Design Research Institute Co.Ltd.,Zhengzhou 450000,China)

机构地区：[1]华中科技大学能源与动力工程学院煤燃烧国家重点实验室,湖北武汉430074 [2]湖北加德科技股份有限公司,湖北武汉430000 [3]河南城乡规划设计研究总院股份有限公司,河南郑州450000

出　　处：《中国给水排水》2024年第22期90-96,共7页China Water & Wastewater

基　　金：武汉市成果转化项目(2019030703011534);武汉市企业技术创新项目(2020020602012149)。

摘　　要：介绍了钟祥市污泥热解气化项目(规模为120 t/d)双流闪蒸干化耦合流化床热解气化技术的技术原理、工艺流程、污泥处置效果、设计及运行管理经验等。该工艺分为湿污泥贮存系统、污泥干燥系统、热解气化系统、热能利用系统、尾气处理系统和灰渣系统等6大系统。其中核心设备为双流闪蒸干燥机和流化床气化炉。含水率为30%的干污泥和生物质在流化床气化炉内气化产生可燃气,可燃气燃烧产生超850℃高温烟气,经配风降温至600℃作为干化热源用于80%含水率湿污泥干化,可使污泥减量超90%,气化灰渣可作为建材利用。系统设计时充分考虑了关键设备选型、物料输送、负荷调节等因素,具有良好的调整适应能力,可为污泥处置提供新思路和示范案例。The technical principle,process flow,sludge disposal effect,design and operation management of the coupled fluidized bed pyrolysis gasification technology of the sludge pyrolysis gasification project in Zhongxiang(120 t/d) are introduced.The process is divided into six systems including wet sludge storage system,sludge drying system,pyrolysis and gasification system,heat energy utilization system,tail gas treatment system,ash and slag system.The core equipment is a double-flow flash dryer and a fluidized bed gasifier.Dry sludge with 30% moisture content and biomass are gasified in the fluidized bed gasifier to produce gas,the flue gas generated at over 850 ℃ high temperature by gas combustion is cooled to 600 ℃ by distributing air as a drying heat source to dry the wet sludge with 80%moisture content,which can reduce the sludge by more than 90%,besides gasification ash can be used as building materials.The design of the system fully considers the selection of key equipment,material transportation,load adjustment capacity,etc.,and has good adjustment and adaptation ability.It can provide a new idea and demonstration case for sludge disposal.

关 键 词：城市污水污泥 生物质 闪蒸干化 热解气化 资源化利用 

分 类 号：TU992[建筑科学—市政工程]