农业机械学报2012，Vol.43Issue(8)：116-120,5.DOI:10.6041/j.issn.1000-1298.2012.08.022
固体热载体加热生物质的闪速热解特性
Flash Devolatilization Characteristics of Biomass Particles Heated by Solid Heat Carriers
摘要
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, 1 200 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.关键词
生物质/固体热载体/热解特性Key words
Biomass/ Solid heat carrier/ Devolatilization characteristic分类
能源科技引用本文复制引用
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):116-120,5.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) （51006065）
