摘要
用热重分析法对玉米秸秆的热解规律进行了研究。分析了玉米秸秆样品在不同升温速率(5℃、10℃、20℃、30℃/min)和不同温度(200℃、250℃、300℃、350℃)条件下恒温2h热解的实验结果,发现样品的非等温失重过程由脱水、保持、剧烈失重和缓慢失重4个阶段组成,并且在相同条件下样品的质量对玉米秸秆热解有一定的影响。在恒温热解过程中,不同的恒温温度条件下其失重曲线形态基本相似,但在300℃条件下恒温热解的热重曲线与250℃、350℃条件下恒温热解的热重曲线相比较较为平缓。上述的研究结果为玉米秸秆的合理利用提供了一定的理论基础。
The method of thermogravimetric analysis is used to obtain the pyrogenation characteristics of corn straw in this paper. It analyses the experimental results which the samples of corn straw keep the constant temperature for two hours at the different heating rate （5℃ ,10℃ ,20℃,30℃/min）and different temperatures （200℃ ,250℃ ,300℃,350℃ ）. The results show that the unisothernal weightlessness process of the sample is made up of four stages which include the deprivation, conservation, conversation dramatic weightlessness and slow weightlessness and they, also show that the mass of samples has effect on the pyrogenation of corn - straw on the same conditions . During the pyrogenation process of isothermal temperature , the TG curves of the corn - straw are very similar at different isothermal temperatures, but the thermogrovimetric curves of constant temperature pyrogenation at 300℃ are smoother than that at 250℃and 350℃. It can provide a theoretical basis for more reasonable applications of the corn straw.
出处
《应用能源技术》
2006年第2期1-3,共3页
Applied Energy Technology
基金
辽宁工程技术大学校基金资助项目(04A01004)
关键词
生物质
热解
热重分析
升温速率
恒温
biomass
pyrogenation
thermogravimetric analyse
heating rate
constant temperature
