农业机械学报2024，Vol.55Issue(6)：325-331,364,8.DOI:10.6041/j.issn.1000-1298.2024.06.034
兼吸式移动床生物质热解炭化装置设计与试验
Design and Experiment of Both Updraft and Downdraft Biomass Pyrolysis Charring Device in Moving Bed
摘要
Abstract
Aiming at the insufficient conditions of the current research platform for the internal heating mobile bed biomass pyrolysis carbonization test,an internal heating up and down suction mobile bed pyrolysis carbonization test device was proposed,the continuous pyrolysis carbonization process was simulated,and the gas supply system,carbon sampling collection system,product collection system,gas purification system and temperature monitoring system were designed.Using rice husk as raw material,up-suction and down-suction pyrolysis carbonization experiments were carried out to study the effects of residence time and inspiratory mode on internal thermal pyrolysis carbonization products.The results showed that with the increase of residence time,the volatile and fixed carbon contents of rice husk carbon were decreased,the ash content was increased,and the calorific value was decreased.The calorific value of rice husk carbon was decreased from 20.7 MJ/kg and 22 MJ/kg at 10 min to 14.6 MJ/kg and 15.2 MJ/kg at 60 min,respectively.With the increase of residence time,the content of C in rice husk carbon was decreased from 51.9％and 65.3％at 10 min to 36.5％and 54.8％at 60 min,respectively.The content of N element was decreased from 1.1％and 2.3％at 10 min to 0.5％and 0.7％at 60 min,respectively.The content of O element was increased from 46.0％and 28.7％at 10 min to 61.7％and 42.2％at 60 min,respectively.The change trend of H element was not obvious.With the increase of residence time,the specific surface area of up-suction and down-suction pyrolysis rice husk charcoal was increased from 0.73 m2/g and 0.78 m2/g at 10 min to 3.84 m2/g and 3.95 m2/g at 60 min,respectively,and the pore structure of biochar was developed.The test system had reasonable structure,stable and reliable operation,good sealing effect,and can effectively control the test factors such as air intake mode,air intake volume and heat preservation carbonization time.The development of the internal thermal pyrolysis charring platform provided an important condition support for the experimental research of internal heating charring process parameters.关键词
生物质/热解/炭化/上下兼吸Key words
biomass/pyrolysis/carbonization/both updraft and downdraft分类
农业科技引用本文复制引用
宋威,孟海波,陈明松,王泽阳,葛芸妤,武继宁,丛宏斌..兼吸式移动床生物质热解炭化装置设计与试验[J].农业机械学报,2024,55(6):325-331,364,8.基金项目
国家重点研发计划项目(2022YFD2300302)和农业农村部规划设计研究院自主研发项目(QD202109、QNYC-2021-03、CHXTY-2021) （2022YFD2300302）
