Effect of Particle Size Distribution on Lignite Char Water Slurry

摘要：

The lignite char obtained from the low temperature pyrolysis of Baiyinhua(BYH) lignite consists of low hydrophilic groups and is preferable for preparing char-water slurry.In this work,the effects of char mass and grinding time during preparation of feedstock and pyrolysis temperature on the properties of lignite char water slurry (LCWS) were investigated.The results showed that the particle size distribution of lignite char has an obvious effect on the LCWS properties.The particle size distribution changes with the grinding mass and time of char obtained by lignite pyrolysis at different temperatures.The high quality LCWS can be obtained with the lignite char from pyrolysis at 420 oC through 120 min grinding of 280 g lignite char,and the static stability of LCWS can reach over 25 days.Additionally,the particle size distribution of the chars from different pyrolysis temperatures is similar with the 280 g grinding mass and 120 min grinding time.And this grinding condition is feasible to other lignite chars

关键词： Lignite char-water slurry:Particle size distribution:Apparent viscosity Static stability

作者: Peili Zhang Lijun Jin YunpengZhao Sibao Liu Gang Wang Jiahe Liu Haoquan Hu

作者单位: State Key Laboratory of Fine Chemicals,Institute of Coal Chemical Engineering,School of Chemical Engineering,Dalian University of Technology,129 Street,Dalian 116012,P.R.China

会议类型: 国际会议

会议名称: The 8th International Symposium on Gas Cleaning at High Temperatures(第八届国际高温气体净化技术研讨会 GCHT-8)

会议地点: 太原

会议语种:英文

页码: 636-643

在线出版日期: 2010-08-23（万方平台首次上网日期，不代表论文的发表时间）