Kinetic Study of Carbon Dioxide Gasification of Rice Husk Fast Pyrolysis Char

被引：42

作者：

Alvarez, Jon ^{[1
]}

Lopez, Gartzen ^{[1
]}

Amutio, Maider ^{[1
]}

Bilbao, Javier ^{[1
]}

Olazar, Martin ^{[1
]}

机构：

[1] Univ Basque Country UPV EHU, Dept Chem Engn, E-48080 Bilbao, Spain

来源：

ENERGY & FUELS | 2015年 / 29卷 / 05期

关键词：

CO2; GASIFICATION; STEAM GASIFICATION; BIOMASS CHAR; HEATING-RATE; ACTIVATED CARBONS; FLASH PYROLYSIS; REACTIVITY; WOOD; CONVERSION; OPERATION;

D O I：

10.1021/acs.energyfuels.5b00318

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：

The rice husk char gasification kinetics with carbon dioxide has been studied in a thermogravimetric analyzer (TGA) under isothermal and dynamic regimes. The effect of the carbon dioxide concentration (50, 75, and 100 vol %) and heating rate (5, 10, and 20 degrees C min(-1)) was determined in the dynamic run, and the effect of the temperature (750, 800, and 850 degrees C) was determined in the isothermal runs. Rice husk char gasification has a complex kinetic behavior, with reactivity being strongly dependent upon the temperature and char conversion. The experimental results have been fitted to four different kinetic models, namely, homogeneous, nth order, random pore model and modified random pore model. The random pore model is the model that provides the best fit to the experimental evolution.

引用

页码：3198 / 3207

页数：10

共 45 条

[1] Upgrading the rice husk char obtained by flash pyrolysis for the production of amorphous silica and high quality activated carbon [J].