An investigation on the rheological and sulfur-retention characteristics of desulfurizing coal water slurry with calcium-based additives

被引：32

作者：

Liu, Fianzhong ^{[1
]}

Zhao, Weidong ^{[1
]}

Zhou, Junhu ^{[1
]}

Cheng, Jun ^{[1
]}

Zhang, Guanqxue ^{[1
]}

Feng, Yungang ^{[1
]}

Cen, Kefa ^{[1
]}

机构：

[1] Zhejiang Univ, Inst Thermal Power Engn, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Peoples R China

来源：

FUEL PROCESSING TECHNOLOGY | 2009年 / 90卷 / 01期

关键词：

Coal water slurry; Viscosity; Stability; Sulfur-retention agents; Rheology; BEHAVIOR; MIXTURES; COMBUSTION; VISCOSITY; STABILITY;

D O I：

10.1016/j.fuproc.2008.08.006

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Desulphurizing coal water slurry is a kind of new clean coal water slurry(CWS), which has good performance on SO2. emission during combustion and gasification process. But, the addition of sulfur-retention agents have some effects on the stability and fluid characters of the coal water slurry. in this paper, the viscosity, stability and rheology of Xinwen coal water slurry have been studied by adding different kinds of calcium-based sulfur-retention agents and different dosage. The results show that the sulfur-retention agents have little effect on rheological nature of CWS, which still presents pseudoplastic fluid. The addition of sulfur-retention agents will increase the viscosity of CWS, but the stability will decrease a little. The results also show that inorganic calcium has less negative effect on the performance of CWS than the organic calcium. The viscosity of the CWS with organic calcium agent keeps 10001200 mPa s when Ca/S molar ratio is 2. Sulfur release of the CWS with CaCO3 reduces to 52% at Ca/S = 2 compared to original of 98%. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：91 / 98

页数：8

共 24 条

[1] Effect of addition of surface active agent on the viscosity of a high concentration slurry of a low-rank British coal in water [J].