高校化学工程学报2011，Vol.25Issue(2)：231-235,5.
竹材热解失重动力学模型研究
Study on Pyrolvsis Kinetics of Bamboo
谷双 1陈纪忠1
作者信息
- 1. 浙江大学化学工程与生物工程学系化学工程联合国家重点实验室,浙江杭州310027
- 折叠
摘要
Abstract
The pyrolysis of two different kinds of bamboo were carried out by thermogravimetry (TG) at different heating rates (10, 20, 30 and 50 K·min-1) within the temperate range of 313～873 K and under N2 atmosphere; And the pyrolysis kinetics of bamboo were analyzed by both model-free-kinetics (MFK) and model-fitting-method. The results show that pyrolysis of sample # I is a quite simple process with single DTG peak, and the apparent activation energy E calculated by MFK varies little with the variation of conversion α.This means that the pyrolysis of sample # 1 is a simple reaction and can be explained as one step first-order reaction by model-fitting-method. The pyrolysis of sample # 2 is a more complex process with two distinct DTG peaks; Value of E calculated by MFK increases monotonously with the increase of α. According to the model-fitting-method, the pyrolysis process of sample # 2 may be described as two independent steps. The first step is quite simple and can be described by one-step simple reaction model, while the second step is more complex and can be explained as existing two parallel first-order reactions forming volatile matter and char separately.关键词
竹材/热重分析/热解/动力学Key words
bamboo/ thermogravimetry analysis/ pyrolysis/ kinetics分类
生物科学引用本文复制引用
谷双,陈纪忠..竹材热解失重动力学模型研究[J].高校化学工程学报,2011,25(2):231-235,5.
