论文部分内容阅读
采用TG/MS联用仪对3种典型生物质(玉米秸秆、玉米芯和稻秆)在高温分解过程中气相产物的析出特性进行了试验研究,分析了温度、升温速率、氧浓度、生物质种类对其的影响.结果表明:轻质组分的析出集中于挥发分大量热解的温度区域,而焦油组分的析出没有明显的温度窗口;升温速率对各产物析出的影响有限,随着升温速率的增大,挥发分析出特性指数增大,活化能降低,更易于产物析出;有氧环境更有利于热解温度区产物的析出,相比有氧条件下氧浓度的改变,产物的析出对有、无氧更敏感;3种生物质的产物析出量受挥发分含量的影响由大到小依次为:稻秆>玉米芯>玉米秸秆.
The pyrolysis characteristics of three typical biomass (corn straw, corn cob and rice straw) during pyrolysis were investigated by TG / MS. The effects of temperature, heating rate, oxygen concentration, biomass The results show that the precipitation of light components concentrates in the temperature region where a large amount of pyrolysis is pyrolyzed while the precipitation of tar components has no obvious temperature window. The heating rate has a limited impact on the precipitation of each product. With the increase of When the heating rate increases, the characteristic index of volatile analysis increases, the activation energy decreases, and the product is more easily precipitated. The aerobic environment is more conducive to the precipitation of products in pyrolysis temperature zone. Compared with the change of oxygen concentration under aerobic conditions, Precipitation is more sensitive to oxygen and anaerobic; the amount of the three kinds of biomass precipitated by the volatile content in descending order were: rice straw> corn cob> corn stalk.