Release characteristics of potassium and chlorine for torrefied wheat straw during a combined pyrolysis-combustion system

被引：18

作者：

Zhang, Shuping ^{[1
,2
]}

Min, Ganggang ^{[2
]}

Wang, Junyi ^{[2
]}

Zhu, Shuguang ^{[2
]}

Zhang, Houlei ^{[2
]}

Liu, Xinzhi ^{[2
]}

机构：

[1] Southeast Univ, Sch Energy & Environm, Minist Educ, Key Lab Energy Thermal Convers & Control, Nanjing 210096, Jiangsu, Peoples R China

[2] Nanjing Univ Sci & Technol, Sch Energy & Power Engn, Nanjing 210094, Jiangsu, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2020年 / 312卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Torrefaction; Pyrolysis; Straw; Potassium; Chlorine; BIOMASS TORREFACTION; RICE HUSK; GASIFICATION; TRANSFORMATION; EMISSION; BIOCHAR;

D O I：

10.1016/j.biortech.2020.123591

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The objective is to investigate the release characteristics of potassium (K) and chlorine (Cl) for torrefied wheat straw during a combined pyrolysis-combustion system. Powder and flake wheat straw samples were torrefied at different temperature of 200-300 degrees C. The basic characteristics of torrefied samples and the K and Cl release rates of torrefied samples and their char samples derived from pyrolysis at 400-800 degrees C were analyzed and characterized. The results indicated that release rate of Cl was significantly higher than that of K under the same torrefaction conditions. In order to keep most of K and Cl remaining in biochar as well as the volatiles were completely released, the pyrolysis temperature of 700 degrees C for pyrolysis-combustion system was suitable. The total release rate of K and Cl at the pyrolysis temperature of 700 degrees C both exhibited a change trend of decreasing first and then increasing with the increase of torrefaction severity.

引用

页数：7

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