生物质化学工程Issue(3)：19-24,6.DOI:10.3969/j.issn.1673-5854.2014.03.004
松木屑加压CaO催化热解动力学研究
Research on Pyrolysis Dynamics of Pine Sawdust under Pressure and with CaO as Catalyst
摘要
Abstract
The influences of different pressures, heating rate and addtion of CaO catalyst on pine sawdust pyrolysis process and dynamics analysis were studied. The experimental results show that:1 ) Increasing the reaction pressure will reduce eventually weight loss rate of pyrolysis process, and the final remaining material will increase, increasing the reaction pressure is not conducive to the volatile analysis. This study found that a certain range of pressure increase can reduce the activation energy of pyrolysis process, which is advantageous to the pyrolysis reaction, but after the pressure exceeds 0. 7 MPa, activation energy began to increase. 2 ) Increasing the heating rate can enhance the volatile releases, which is advantageous to the pyrolysis reaction, but a large amount of precipitation temperature rang of volatile was not obvious. It was found that with the increase of heating rate, the reaction activation energy trendth decrease. It shows that with the increase of heating rate, pine sawdust pyrolysis reaction is more intense. 3) Addition of CaO in the pine sawdust, has a larger effect on pyrolysis reaction process. With the increase of CaO catalyst additives, pine sawdust weight loss rate reduces gradually from 72. 81% to 59. 61 %. Total reduction is 18. 13 %. DTG curves show that weight loss peaks increased to four,the other two peaks are the decomposition weight loss caused by Ca( OH) 2 and CaCO3 , respectively. With the increase of addition of CaO, the first and second peaks of weight loss peak decreases gradually. The temperature corresponding to the peak point of the biggest change is not obvious. The third and fourth weight loss peaks increase gradually, and the maximum peak corresponding to the temperature appears obvious trend of increase.关键词
生物质/加压/热解/动力学Key words
biomass/pressure/pyrolysis/dynamics分类
化学化工引用本文复制引用
余维金,应浩,江俊飞,王燕杰..松木屑加压CaO催化热解动力学研究[J].生物质化学工程,2014,(3):19-24,6.基金项目
“十二五”国家科技支撑计划资助(2012BAA09B03) （2012BAA09B03）
