RENShao-hui,YAOXue-tong,YUQiao,et al.Demonstration Study on Co-gasification of Sewage Sludge and Biomass for Reclamation Utilization[J].China Water & Wastewater,2024,40(22):90-96.
Demonstration Study on Co-gasification of Sewage Sludge and Biomass for Reclamation Utilization
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第22期
Page:
90-96
Column:
Date of publication:
2024-11-17
- Abstract:
- 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.
Last Update:
2024-11-17