花生壳热解试验及其剩余物特性红外光谱分析

Experiments of peanut hull pyrolyis and FTIR spectral analysis of characteristics of its surplus matters

为有效控制生物质热解反应终温,本文在热分仪上,分别以40℃/min和60℃/min二种不同升温速率进行了花生壳热解试验,并以花生壳及其热解反应过程中缓慢热解反应阶段(≥400℃)剩余物为原料,对其进行傅里叶变换红外(FTIR)光谱分析。结果表明:不同升温速率对不同温度时的热解试验剩余物成分影响不大,光谱曲线趋于一致,在450℃以下,剩余物的成分随着温度而变化,从450℃到600℃,FTIR光谱图上的透光率已经没有明显变化。因此,生物质热解反应终温应控制在450℃左右。

Experiments of peanut hull pyrolyis were conducted in a thermogravimetry（TG） instrument at the heating rates of 40℃/min and 60℃/min. In addition, peanut hull and surplus matters of the peanut hull pyrolyis at slow pyrolytic reaction stage（≥400℃） were analyzed by the Fourier transformation infrared （FTIR） spectro- graphic method in order to effectively control final temperature of biomass pyrolysis. Results showed that different heating rates of pyrolysis had no too much influence on the content of the surplus matters at different final pyrolysis temperatures, and FTIR spectrogram curves tended to be consistent. The contents of the surplus matters were changed with temperature before 450℃. Transmittance in the Fourier transformation infrared spectrogram curves had no obvious changes from 450℃ to 600℃. Therefore, the final reaction temperature of biomass pyrolysis should be controlled at about 450℃.