固定床热解紫茎泽兰茎干的研究

Study on Pyrolysis of Eupatorium adenophorum in the Fixed Bed

考察了热解温度、停留时间、粒径、升温速率等因素对紫茎泽兰茎干在固定床内热解燃气特性的影响。结果表明，H2含量随着热解温度的升高、停留时间的延长、粒径的减小、升温速率的下降而上升，最高可达70％左右，远高于目前几种生物质热解所产生的H2量；CO含量随着热解温度的升高而升高，本实验条件下其他因素对它的影响不大；CH4含量随着热解温度的升高、停留时间的延长、升温速率的下降而下降。燃气热值在10000—13500kJ／m^3左右，属于中热值燃气，随着热解温度的上升、停留时间的延长、粒径的增大而下降，随升温速率的增加先上升后下降。

The effects of pyrolysis temperature, residence time, particle size and heating rate on characters of pyrolysis gas of Eupatiorium adenophorum stem in fixed bed was investigated. The results showed that, H2 content, which was up to 70 % , increased with the promotion of pyrolysis temperature, residence time, particle size as well as the decrease of heating rate. H2 content is much higher than that got from several already used biomasses; CO content increased with the promotion of temperature; CH4 content declined with the increase of temperature, residence time and heating rate. Heat value of gas was about 10 000 - 13 500 kJ/m^3 , which is middle heat value, decreased with the increase of temperature, residence time, particle size and the promotion of heating rate increased first then decreased.