水冷壁气化炉熔渣表面形态的几何特性  

Geometric characteristics of slag surface in water cooled wall gasifier

作　　者：徐赢[1] 林伟宁[1] 梁钦锋[1] 刘海峰 于遵宏[1] 

机构地区：[1]华东理工大学煤气化教育部重点实验室,上海200237

出　　处：《化工学报》2007年第12期3122-3127,共6页CIESC Journal

基　　金：国家重点基础研究发展计划项目(2004CB217703);教育部"长江学者与创新团队发展计划"创新团队项目(IRT0620)~~

摘　　要：The test of slagging on water cooled wall was performed in a lab-scale entrained-flow gasifier.The gasifier’s slag surface morphology at different temperatures was studied and analyzed quantitatively.The equivalent temperature(T)was proposed,which was the ratio of slag real temperature and ash fusion temperature.The slag surface roughness was obtained by using ImageJ image analysis software.The slag surface was smoother when T>1.0 than that of T<1.0.Using fractal theory,the geometric characteristics of slag surface were quantitatively shown by fractal dimensions,and the relationship between equivalent temperature and fractal dimensions was found.The results showed that the whole spread of molten slag particles required T be greater than 1.0 too.The test of slagging on water cooled wall was performed in a lab-scale entrained-flow gasifier.The gasifier＇s slag surface morphology at different temperatures was studied and analyzed quantitatively.The equivalent temperature（T）was proposed,which was the ratio of slag real temperature and ash fusion temperature.The slag surface roughness was obtained by using ImageJ image analysis software.The slag surface was smoother when T〉1.0 than that of T〈1.0.Using fractal theory,the geometric characteristics of slag surface were quantitatively shown by fractal dimensions,and the relationship between equivalent temperature and fractal dimensions was found.The results showed that the whole spread of molten slag particles required T be greater than 1.0 too.

关 键 词：水冷壁气化炉 熔渣 表面形态 分形理论 

分 类 号：TQ545[化学工程—煤化学工程]