罗涛,陈闯,梅自力,韩智勇,李淑兰.自流排砂沼气池设计与试验[J].农业机械学报,2012,43(12):114-117,50.
Luo Tao,Chen Chuang,Mei Zili,Han Zhiyong,Li Shulan.Design and Experiment of Automatic Flushing Basin of Biogas Digester[J].Transactions of the Chinese Society for Agricultural Machinery,2012,43(12):114-117,50.
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自流排砂沼气池设计与试验   [下载全文]
Design and Experiment of Automatic Flushing Basin of Biogas Digester   [Download Pdf][in English]
  
DOI:10.6041/j.issn.1000-1298.2012.12.021
中文关键词:  沼气池  旋流  排砂率  自流
基金项目:“十二五”国家科技支撑计划资助项目(2011BAD15B03)
作者单位
罗涛 农业部沼气科学研究所 
陈闯 农业部沼气科学研究所 
梅自力 农业部沼气科学研究所 
韩智勇 农业部沼气科学研究所 
李淑兰 农业部沼气科学研究所 
中文摘要:为实现自流排砂,以圆柱形沼气池为研究对象,进料管设计为弦向,使反应器内部流体产生旋流,并利用Fluent软件对其流场进行模拟分析,确定泥砂最易在底部左下角区域沉积。按水力相似准则建立试验模型,设计排砂管与进料管的夹角为150°,以含砂量为10%的清水作为试验流体,批量连续进料,对自流排砂反应器与常规反应器的排砂性能进行比较。结果表明:自流排砂反应器在第3次排砂就能收集到泥砂,第5次排砂排砂率可达86.13%,前19次平均排砂率是常规反应器的3.81倍,第5~22次的平均排砂率为82.17%,明显优于常规反应器。
Luo Tao  Chen Chuang  Mei Zili  Han Zhiyong  Li Shulan
Biogas Institute of Ministry of Agriculture;Biogas Institute of Ministry of Agriculture;Biogas Institute of Ministry of Agriculture;Biogas Institute of Ministry of Agriculture;Biogas Institute of Ministry of Agriculture
Key Words:Biogas digester, Rotational flow, Grit removal rate, Automatic flushing
Abstract:Taking the physical model of cylindrical biogas digester as the research project to design automatic flushing basin of biogas digester, the flow of the digester was rotated by designing feed pipe to be tangential. Fluent was used to analyze the process. It was found that the grit deposition area that was on lower left bottom. Based on the theory of hydraulic similarity, the design digester and the conventional digester were established. The angle between grit discharge pipe and feed pipe was designed for 150° according to the sedimentation law. Water was used as experiment fluid, whose sand contents were 10%. The results showed that sand would be collected at the 3rd discharging at design digester, the grit removal rate was up to 86.13% at the 5th, the average grit removal rate for 19 times was 3.81 times of the conventional, and the average of the 5th to 22nd was 82.17%. The grit removal result of conventional was exceeded by the design.

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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