Effects of titanium dioxide as direct causticization agent on the pyrolysis and steam gasification characteristics of straw black liquor solid

GIEC OpenIR > 中国科学院广州能源研究所

	Effects of titanium dioxide as direct causticization agent on the pyrolysis and steam gasification characteristics of straw black liquor solid
	Wang, Guijin; Yuan, Hongyou; Guo, Daliang; Zhou, Zhaoqiu; Yin, Xiuli; Wu, Chuangzhi
	2015-06-01
发表期刊	TAPPI JOURNAL
卷号	14 期号:6 页码:361-369
摘要	Black liquor gasification process with direct causticization using titanium dioxide (TiO2) is considered a promising technology for black liquor recovery in the future. In this study, laboratory-scale pyrolysis and steam gasification experiments with direct causticization using TiO2 for straw black liquor solid were performed in a thermogravimetric analyzer and a tube furnace, respectively. Effects of TiO2 on the pyrolysis and steam gasification characteristics are discussed on the basis of product analysis. The results show that after adding TiO2 at temperature higher than 550 degrees C, the direct causticization reactions happened, while the thermogravimetric behavior of the black liquor solid along with releasing pattern of carbon dioxide and carbon monoxide was changed. In the presence of TiO2, swelling and agglomeration were prevented during the pyrolysis process. Meanwhile, sodium emission was significantly decreased and the steam gasification rate of the black liquor char at 850 degrees C was substantially improved. The melting process during gasification was suppressed with direct causticization. Moreover, the yield of hydrogen was kept constant while the yields of carbon dioxide and carbon monoxide were increased during the steam gasification process with direct causticization.
文章类型	Article
WOS标题词	Science & Technology ; Technology
研究领域[WOS]	Materials Science
关键词[WOS]	TG-FTIR ANALYSIS ; THERMAL-DEGRADATION ; WHEAT-STRAW ; RELEASE ; CHAR ; CONVERSION ; TITANATES ; PRESSURE ; BEHAVIOR ; KINETICS
收录类别	SCI
语种	英语
WOS类目	Materials Science, Paper & Wood
WOS记录号	WOS:000357403200003
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/10520
专题	中国科学院广州能源研究所
作者单位	Chinese Acad Sci, Guangzhou Inst Energy Convers, Beijing 100864, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Guijin,Yuan, Hongyou,Guo, Daliang,et al. Effects of titanium dioxide as direct causticization agent on the pyrolysis and steam gasification characteristics of straw black liquor solid[J]. TAPPI JOURNAL,2015,14(6):361-369.
APA	Wang, Guijin,Yuan, Hongyou,Guo, Daliang,Zhou, Zhaoqiu,Yin, Xiuli,&Wu, Chuangzhi.(2015).Effects of titanium dioxide as direct causticization agent on the pyrolysis and steam gasification characteristics of straw black liquor solid.TAPPI JOURNAL,14(6),361-369.
MLA	Wang, Guijin,et al."Effects of titanium dioxide as direct causticization agent on the pyrolysis and steam gasification characteristics of straw black liquor solid".TAPPI JOURNAL 14.6(2015):361-369.