【摘要】 <正> 一、前言高温气体干式除尘具有很大的实际意义,习用的旋风分离器,技术上比较成熟,但对小于10μ的灰尘粒子效率一般不高。国内炼油厂催化裂化再生器采用三级旋风以回收炉顶气的能量,但处理后的气体含尘仍在150mg/m~3左右,对透平叶片的磨损较大。广泛应用于化工、建材等行业的布袋除尘器因不耐高温而受到限制。70年代初,Sguries等人发展了Ducon 公司早期开发的固定颗粒床除尘技术,对10μ以下的灰尘取得了高达99.9%的除尘效率,但这一技术的工业应用遇到了高温气体需要频繁切换的麻烦。更多还原

【Abstract】 Three types of moving bed granule filters have been theoretically and experimentally studied in this paper.It has been found that the mixed type bed of crossflow and countercurrent flow can improve the nonuniformity of particle velocity distribution.For dust of 10μ in size, the single stage efficiency can be maintained at 86% stably.更多还原