朱洪光,毕峻玮,石惠娴.全混式厌氧反应器搅拌方式分析与优化[J].农业机械学报,2011,42(6):127-131,137.
Zhu Hongguang,Bi Junwei,Shi Huixian.Analysis and Optimization of Different Mixing Method in Completly Mixed Digesters[J].Transactions of the Chinese Society for Agricultural Machinery,2011,42(6):127-131,137.
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全混式厌氧反应器搅拌方式分析与优化   [下载全文]
Analysis and Optimization of Different Mixing Method in Completly Mixed Digesters   [Download Pdf][in English]
  
DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]
中文关键词:  厌氧反应器  完全混合式  搅拌方式  计算流体动力学
基金项目:国家自然科学基金资助项目(51078287);“十一五”国家科技支撑计划资助项目(2008BADC4B05、2008BAJ08B0);上海市科委资助项目(07DZ12050);上海市科委科技发展基金资助项目 (09391910700)
作者单位
朱洪光 同济大学 
毕峻玮 同济大学 
石惠娴 同济大学 
中文摘要:采用流体动力学模型对全混式厌氧反应器内的流场进行三维稳态数值模拟。研究搅拌器不同安装方式对上层和下层扰动的影响,以达到消除上层结壳和扰动下部污泥层的目的。结果显示,单纯提高搅拌器的安装高度难以改善运行情况。双层搅拌方式下,4.3m层流速较原始安装位置可提高90.90%,0.2m层流速可提高20.94%。工程实践表明,改造后的搅拌方式可以有效减少浮渣,同时扰动污泥,提高运行效率。
Zhu Hongguang  Bi Junwei  Shi Huixian
Tongji University;Tongji University;Tongji University
Key Words:Anaerobic reactor  Completly mixed  Mixing mode  Computational fluid dynamics
Abstract:The characteristics of the flow field in completly mixed biogas digester were studied by computational fluid dynamics (CFD). Effects of different installation way of agitator to the disturbances in the upper and lower layer were analyzed. The results showed that increasing of agitator mounting height was difficult to improve the flow. Therefore, the double-mixing was used in the biogas digesters. Compared to the original installation, flow speed could increase by 90.90% in the 4.3m layer and 20.94% in the 0.2m layer with the double-mixing. The actual project also showed that this modified method could reduce scum, disturb sludge and improve operational efficiency.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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