Study on fusion characteristics of biomass ash

被引：192

作者：

Niu, Yanqing ^{[1
]}

Tan, Hongzhang ^{[1
]}

Wang, Xuebin ^{[1
]}

Liu, Zhengning ^{[1
]}

Liu, Haiyu ^{[1
]}

Liu, Yang ^{[1
]}

Xu, Tongmo ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2010年 / 101卷 / 23期

关键词：

Biomass; Ash; Fusion; Temperature; COAL ASH; SLAGGING CHARACTERISTICS; CHLORINE DEPOSITION; COMBUSTION; PARTICLES; GASIFICATION; COCOMBUSTION; RESIDUE; KAOLIN; BOILER;

D O I：

10.1016/j.biortech.2010.06.144

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The ash fusion characteristics (AFC) of Capsicum stalks ashes, cotton stalks ashes and wheat stalks ashes that all prepared by ashing at 400 degrees C, 600 degrees C and 815 degrees C are consistent after 860 degrees C, 990 degrees C and 840 degrees C, respectively in the ash fusion temperature test and TG. Initial deformation temperature (IDT) increases with decreased K2O and went up with increased MgO, CaO, Fe2O3 and Al2O3. Softening temperature (ST), hemispherical temperature (HT) and fluid temperature (FT) do not affected by the concentrations of each element and the ashing temperature obviously. Therefore, the IDT may be as an evaluation index of biomass AFC rather than the ST used as an evaluation index of coal AFC. XRD shows that no matter what the ashing temperature is, the biomass ashes contain same high-temperature molten material. Therefore, evaluation of the biomass AFC should not be simply on the proportion of elements except IDT, but the high-temperature molten material in biomass ash. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：9373 / 9381

页数：9

共 31 条

[1] Importance of coal ash composition in protecting the boiler against chlorine deposition during combustion of chlorine-rich biomass [J].