Effect of slow pyrolysis conditions on biocarbon yield and properties: Characterization of the volatiles

被引：33

作者：

Babinszki, B. ^{[1
,2
]}

Sebestyen, Z. ^{[1
]}

Jakab, E. ^{[1
]}

Kohalmi, L. ^{[1
]}

Bozi, J. ^{[1
]}

Varhegyi, G. ^{[1
]}

Wang, L. ^{[3
]}

Skreiberg, O. ^{[3
]}

Czegeny, Zs ^{[1
]}

机构：

[1] Res Ctr Nat Sci, Inst Mat & Environm Chem, Magyar Tudosok Korutja, H-1117 Budapest, Hungary

[2] Eotvos Lorand Univ, Hevesy Gyorgy PhD Sch Chem, Pazmany Peter Setany 1-A, H-1117 Budapest, Hungary

[3] SINTEF Energy Res, Sem Saelands Vei 11, NO-7034 Trondheim, Norway

来源：

BIORESOURCE TECHNOLOGY | 2021年 / 338卷

关键词：

Biomass; Carbonization; Biocarbon; TG/MS; Py-GC/MS; HEATING RATE; CHAR YIELD; BIOMASS; TEMPERATURE; GASIFICATION; BIOCHAR; TG;

D O I：

10.1016/j.biortech.2021.125567

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Slow pyrolysis of spruce and birch was performed at various heating programs and conditions in a horizontal quartz tube reactor heated by an electric furnace. The effects of feedstock and carbonization conditions on the yield of biocarbon, liquid and gaseous products were studied. The thermal properties, volatile matter (VM) content and the evolution profiles of volatiles from the biocarbons were characterized by thermogravimetry/mass spectrometry. The composition of volatiles was analyzed in detail by pyrolysis-gas chromatography/mass spectrometry. Increased char yield was observed when staged pyrolysis program, low purging flow rate or covered sample holder were applied. Spruce produced more charcoal than birch due to the higher lignin content of softwood. The amount and the evolution profiles of the main gaseous products were similar from spruce and birch biocarbons prepared under the same conditions. The relative amount of aromatic and polyaromatic compounds in VM drastically decreased with increasing carbonization temperature.

引用

页数：10

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