摘要
脱硫型水煤浆是一种新型的清洁水煤浆,在燃烧和气化过程中具有固硫作用,但固硫剂对水煤浆性能有一定影响.文中针对新汶水煤浆,在添加不同钙基固硫剂、不同Ca/S比时对水煤浆的粘度、稳定性、流变性和硫析出特性等进行了研究,结果表明固硫剂不会对水煤浆流变性本质产生影响,水煤浆仍然呈现为假塑性流体,但其粘度会增加,稳定性有所下降.无机钙对水煤浆性能影响要小于有机钙,在Ca/S=2时,添加无机钙后水煤浆粘度为1000～1200mPa·s.添加CaCO3（Ca/S=2）的水煤浆在1000℃燃烧,硫的析出率由98%下降到52%.
Desulphurizd coal water slurry is a new kind of clean coal water mixture, which shows some SO2 removal efficiency during combustion and gasification. Sulfur-retention agent has some effect to the performance of coal water slurry. The viscosity, stability and rheology have been studied through adding different calcium base sulfur-retention agent and different Ca/S molar ratio in Xinwen coal water slurry. The results show that the sulfur-retention agent has little effect on rheology of CWS, which still presents pseudoplastic fluid. But the viscosity of CWS increases, while the stability decreases a little. The data also shows that inorganic calcium has little effect on the performance of CWS than organic calcium. The viscosity of CWS with organic calcium agent keeps 1000-1200 mPa.s when Ca/S=2. Sulfur release of CWS adding CaCO3 reduces from 98% to 52% when Ca/S molar ratio is 2 and combustion temperature is 1000℃.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2006年第21期99-103,共5页
Proceedings of the CSEE
基金
国家重点基础研究发展规划项目(2004CB217701)
浙江省科技攻关计划项目(2004C36010)~~
关键词
热能动力工程
水煤浆
粘度
稳定性
固硫剂
thermal power engineering
coal water slurry
viscosity
stability
sulfur-retention agent
