摘要
针对Shell煤气化装置合成气冷却器段出现的积灰与堵灰现象,选取Shell煤气化飞灰(SH)与电厂飞灰(DH),利用Shell煤气化冷态模拟装置采集沉积于器壁的飞灰样品,并采用激光粒度分析仪进行粒度分布的研究。结果表明:DH飞灰粒度大于SH飞灰,喷射时间相同时,DH飞灰沉积质量大于SH飞灰,且DH飞灰与SH飞灰分别在沉积30 s与60 s时D 50为最大值,其他喷射时间下D50相差不大,随着喷射时间的延长,DH飞灰颗粒(0～5μm)与SH飞灰颗粒(0～1μm)含量不断增多,DH飞灰颗粒(38～75μm)百分含量与SH飞灰颗粒(38～75μm)百分含量分别在沉积30 s与60 s时为最大值。
According to fly ash deposit and plugging at the synthetic gas cooling tower of the Shell coal gasification. Chose Shell coal gasification fly ash （SH） and power plant fly ash （DH）.Shell Coal Gasification Cold Model Unit was applied to collect the fly ash samples deposit on the wall. And Laser Particle Size Analyzer was applied to study on particle size distribution. The study results showed that, DH fly ash particle size is greater than the SH fly ash. In the same spraying time, the deposition quality of DH fly ash is more than SH fly ash. The D50 of DH fly ash and SH fly ash is a maximum respectively in sedimentary 30 s and 60 s. In other spraying time, the D50 differ not quite. Along with the extension of spraying time,the percentage of DH fly ash particles （0-5 μm） and SH fly ash particles （0-1 μm） increased, and the percentage of DH fly ash particles （38-75 μm） and SH fly ash particles （38-75 pro） is a maximum respectively in sedimentary 30 s and 60 s.
出处
《广东化工》
CAS
2012年第18期10-12,31,共4页
Guangdong Chemical Industry
基金
安徽理工大学博士基金资助项目(2010yb008)
关键词
飞灰
冷态模拟装置
沉积
粒度分布
fly ash
cold model unit
deposition
particle size distribution
