李志合,易维明,高巧春,王婧,张德俐,李永军.固体热载体加热生物质的闪速热解特性[J].农业机械学报,2012,43(8):116-120.
Li Zhihe,Yi Weiming,Gao Qiaochun,Wang Jing,Zhang Deli,Li Yongjun.Flash Devolatilization Characteristics of Biomass Particles Heated by Solid Heat Carriers[J].Transactions of the Chinese Society for Agricultural Machinery,2012,43(8):116-120.
摘要点击次数: 3753
全文下载次数: 1562
固体热载体加热生物质的闪速热解特性   [下载全文]
Flash Devolatilization Characteristics of Biomass Particles Heated by Solid Heat Carriers   [Download Pdf][in English]
  
DOI:10.6041/j.issn.1000-1298.2012.08.022
中文关键词:  生物质  固体热载体  热解特性
基金项目:国家自然科学基金资助项目(51006065)、国家高技术研究发展计划(863计划)资助项目(2011AA101808)和山东省自然科学基金资助项目(ZR2010EQ038)
作者单位
李志合 山东理工大学 
易维明 山东理工大学 
高巧春 山东理工大学 
王婧 山东理工大学 
张德俐 山东理工大学 
李永军 山东理工大学 
中文摘要:为研究固体热载体加热条件下生物质的热解挥发特性,在一竖直下降管模拟实验台上,利用粒子图像测速技术对陶瓷颗粒与生物质粉的混合流动规律进行了实验研究,分析了生物质颗粒在下降管内停留时间的计算方法。利用固体热载体加热下降管生物质热解实验装置,在400、450、500℃热解温度对玉米秸秆进行了热解实验,并在下降距离分别为100、400、700、1200 mm位置处对热解炭粉进行了采样,利用灰分示踪法计算了其热解挥发程度。重复性实验表明各工况下的实验数据具有很好的重复性。通过实验数据与一级动力学模型的对比,发现二者之间差距较大,而在耦合生物质颗粒的运动规律后,实验数据与动力学模型吻合较好。
Li Zhihe  Yi Weiming  Gao Qiaochun  Wang Jing  Zhang Deli  Li Yongjun
Shandong University of Technology;Shandong University of Technology;Shandong University of Technology;Shandong University of Technology;Shandong University of Technology;Shandong University of Technology
Key Words:Biomass, Solid heat carrier, Devolatilization characteristic
Abstract:To investigate biomass devolatilization characteristics heated by solid heat carriers at high heating rate, experiments on the velocity field of biomass particles were conducted with particle image velocimetry (PIV) during the flowing of ceramic balls and pulverized biomass powder in a vertical pipe. Based on the PIV experimental results, the calculation method of residence time of biomass particles was determined. Flash devolatilization experiments of corn stalk were performed with a down flow tube reactor heated by ceramic ball heat carriers at 400℃, 450℃, 500℃ and the char was collected at the drop distance of 100 mm,400 mm, 700 mm, 1200 mm of the tube, respectively. The devolatilization percentages of the char were analyzed with ash tracer method. Results indicate that the experimental data have excellent repeatability, but the data are not agreement with the model well. The experimental data coincide with the model to great extent when the movement function of the biomass particles is involved in computation of the models. 

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.

   下载PDF阅读器