【作者】 李永军；

【导师】 曾德超；

【作者基本信息】 中国农业大学 ， 农业机械化工程， 2004， 硕士

【摘要】 本文对国内外生物质利用技术：气化、液化、固化的研究现状做了简要的介绍，对生物质快速热解液化技术进行了比较深入的探讨，重点介绍了下降管式生物质热解液化实验装置的研制过程。 本课题的目标是设计研制一种下降管式生物质热解液化装置。该装置采用固体介质——陶瓷球颗粒做热载体，用玉米秸秆粉做原料，通过热陶瓷球与玉米秸秆粉的混合接触，实现玉米秸秆粉的快速升温热解，热解气经冷激装置被冷凝为液化油。 首先对生物质原料——玉米秸秆粉的热重特性进行了实验分析，了解了它的挥发特性。对陶瓷颗粒的力学性能、陶瓷颗粒和玉米秸秆粉的混合堆密度、陶瓷颗粒和玉米秸秆粉混合物沿斜滑道的滑动摩擦及其运动状态进行了研究，从而为热解液化装置相关设备的设计提供了设计依据。 本文说细介绍了下降管式生物质热解液化实验装置的工艺流程和有关设备的设计，突出了许多在研制过程中应注意的事项。 下降管式生物质热解液化实验装置建成后，进行了多次开机实验，并记录了实验结果。在实验中，发现了问题，提出了改进措施。对液化油成分的分析，表明了它具有广阔的应用前景。更多还原

【Abstract】 The utilization status of biomass thermal conversion technologies, including gasification, liquefaction and carbonization, were reviewed briefly in this thesis. The biomass fast pyrolysis liquefaction technology was studied in detail with the greatest emphasis on the development of the experimental apparatus.The objective of this study was to develop an experimental apparatus for fast pyrolysis of biomass to produce bio-oil. The thermogravimetric characteristics of palletized corn stalk and wheat straw were determined for analyzing their volatility. The physical properties of ceramic balls, palletized corn stalk and their mixture were also determined. Based on these preliminary studies, a down flow tube reactor of biomass pyrolysis was designed, fabricated and modified. Ceramic balls were used as the heat carrier in the reactor to heat up the biomass with very high heating rate at moderate temperature.Experiments of fast pyrolysis of palletized corn stalk were conducted in the reactor for the purpose of determining the bio-oil yields and their composition with varying ceramic ball temperature and flowrate, palletized corn stalk size and flowrate. The chemicals determined from the bio-oil are valuable indicating a wide range of application of the bio-oil.更多还原