Comparative studies of hydrochars and biochars produced from lignocellulosic biomass via hydrothermal carbonization, torrefaction and pyrolysis

被引：62

作者：

Ercan, Betul ^{[1
]}

Alper, Koray ^{[2
]}

Ucar, Suat ^{[3
]}

Karagoz, Selhan ^{[2
]}

机构：

[1] Karabuk Univ, Dept Met & Mat Engn, TR-78050 Karabuk, Turkiye

[2] Karabuk Univ, Dept Chem, TR-78050 Karabuk, Turkiye

[3] Dokuz Eylul Univ, Izmir Vocat Sch, Chem Technol Program, TR-35160 Izmir, Turkiye

来源：

JOURNAL OF THE ENERGY INSTITUTE | 2023年 / 109卷

关键词：

Biochar; Pyrolysis; Torrefaction; Hydrothermal carbonization; Lignocellulosic biomass; BIO-OIL; SLOW PYROLYSIS; WOOD CHIPS; PRETREATMENT; CELLULOSE; WET; DRY;

D O I：

10.1016/j.joei.2023.101298

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In this study, hydrothermal carbonization, torrefaction, and pyrolysis of hornbeam wood chips were performed. Different runs were conducted at varying temperatures ranging from 225 to 575 & DEG;C, and the resulting biochars and hydrochars were analyzed. Biochars obtained from torrefaction runs had high yields, but no significant structural changes compared to raw material. Biochars produced from pyrolysis runs had high fixed carbon content that increased with temperature. Hydrochars obtained from hydrothermal carbonization had higher degree of carbonization than biochars produced from torrefaction under identical conditions. The order of carbonization degree, from highest to lowest, was: biochars obtained from the pyrolysis process, hydrochars produced from the hydrothermal carbonization process, and biochars obtained from the torrefaction process. The highest heating value of the biochar was 32.51 MJ kg-1, produced from the pyrolysis run at 575 & DEG;C.

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