单喷嘴气化炉内稠密气-固两相旋流浓度场研究  

Study on two-dimensional dense gas-solid flow swirling particle concentration field in gasifier with single nozzle

作　　者：姚敏[1] 刘万洲 王俭[1] 雍晓静[1] 马银剑[1] 张建寿[1] 罗春桃[1] 李伟锋[2] 刘海峰 

机构地区：[1]神华宁夏煤业集团有限责任公司,宁夏灵武750411 [2]华东理工大学煤气化教育部重点实验室,上海200237

出　　处：《洁净煤技术》2011年第1期46-50,共5页Clean Coal Technology

基　　金：国家科技支撑计划项目(2007BAA08B01)

摘　　要：旋转射流在实际工程中应用广泛,利用PV6D颗粒测速仪测量了旋转射流气化炉内颗粒的浓度场特性。结果表明:加旋情况下,喷嘴轴线处的颗粒浓度较不加旋时衰减快,在气化炉上部的测量截面上,颗粒浓度的径向呈"驼峰"分布,而在气化炉下部则分布较均匀;随着固气质量比和颗粒粒径的减小,颗粒轴线的相对浓度衰减加快。Swirling jets is widely used in engineering,the characteristics of particle concentration field in swirling jets gasifier is investigated by PV6D.The results show that the particle concentration in jet axis decays faster in swirling jet than in normal jet,and the particle concentration distribution is a hump shape in the upper part of gasifier,while particle distribute homogeneously in the opposite position.With the decrease of solid-gas ratio and particle diameter,the decay speed of the axial distribution of particle concentration accelerates.

关 键 词：旋转射流 颗粒浓度分布 气固两相流 PV6D颗粒测速仪 

分 类 号：TD94[矿业工程—选矿] TQ547[化学工程—煤化学工程]