Citation: ZHANG Li-qiang, LI Kai, ZHU Xi-feng. Two-step pyrolysis characteristics of bean stalks[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(5): 534-539. shu

Two-step pyrolysis characteristics of bean stalks

Anhui Province Key Laboratory of Biomass Clean Energy, University of Science and Technology of China, Hefei 230026, China

Corresponding author: ZHU Xi-feng, xfzhu@ustc.edu.cn
Received Date: 21 December 2015
Revised Date: 22 February 2016

Fund Project: the Key Research Program of the Chinese Academy of Sciences KGZD-EW-304-3the Major State Basic Research Development Program of China 2013CB228103the Major State Basic Research Development Program of China 973 program

Figures(6)

Two-step pyrolysis of soybean stalk was investigated using pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). The results indicate that with the increase of the first-step pyrolysis temperature (t₁), the total peak area of the first-step products becomes higher. However, for the second-step, the total peak area decreases gradually with the increase of t₁. The products in the first-step pyrolysis have higher contents of acids, ketones and furans when t₁ is 400 or 450 ℃. This is because that the products are originated from cellulose and hemicellulose. The content of hydrocarbon products in the second-step is more than 20% when t₁ is 450 or 500 ℃. With two-step pyrolysis some products with high content can be obtained in the first or second step, respectively, such as acetic acid, furfural, guaiacol, methylbenzene and benzene etc., thus preliminarily achieving the selective pyrolysis of biomass.
- two-step pyrolysis,
- selective pyrolysis,
- Py-GC/MS,
- soybean stalk
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