搅拌强度对全混式沼气池加温过程及加温能耗的影响  

The influence on heating process and energy consumption under different stirring intensities in CSTR

作　　者：石惠娴[1] 荣凌[1] 朱洪光[1] 王韬[1] 李永明[1] 张亚雷[1] 

机构地区：[1]同济大学现代农业科学与工程研究院,上海200092

出　　处：《可再生能源》2011年第1期62-65,71,共5页Renewable Energy Resources

基　　金：上海市科委科技发展基金项目(09391910700);上海市科委项目(07DZ12050);国家科技支撑计划项目(2008BADC4B05);国家科技支撑计划项目(2008BAJ08D0)

摘　　要：在工程条件下,利用变频器设定4个不同搅拌速率:R1=0,R2=576,R3=960,R4=1 152 r/min,进行全混式沼气发酵系统的加热和搅拌运行试验。通过对试验过程中温度场、能耗等情况的监测,研究搅拌强度对沼气池加温过程的影响,为沼气工程运行管理提供技术支持。结果表明,搅拌强度对温度场影响显著,加热温升速度和温度场均一性与搅拌速率有很大相关性,不管在何种速率搅拌下,反应器内部流体温度场的空间异质化始终存在。In this paper,heating and stirring system operation was tested under settings included four different stirring intensities which were set up by a frequency converter in different stirring rates： R1=0,R2=576,R3=960,R4=1 152 r/min.The experiment of temperature field and energy consumption monitoring,stirring intensity influence on the process of biogas digesters was researched,which will provide a technical support for biogas project operation and management.The results showed that： the stirring intensity has a significantly effect on the temperature field,the heating rate and the temperature field homogeneity has a great relevance with stirring rate,no matter what stirring rate is,the space heterogeneity of the fluid temperature field inside the reactor always exist.

关 键 词：全混式沼气发酵池 厌氧消化 加温 搅拌强度 温度场 能耗 

分 类 号：TK6[动力工程及工程热物理—生物能] S216.4[农业科学—农业机械化工程]