THE EFFECT OF CIRCULATING FLUIDIZED-BED PARTICLE CHARACTERISTICS ON EROSION OF 1020-CARBON-STEEL

被引：12

作者：

LINDSLEY, BA

MARDER, AR

LEWNARD, JJ

机构：

[1] LEHIGH UNIV, ENERGY RES CTR, BETHLEHEM, PA 18015 USA

[2] AIR PROD & CHEM INC, ALLENTOWN, PA 18195 USA

来源：

WEAR | 1995年 / 188卷 / 1-2期

关键词：

EROSION; FLUIDIZED BED CIRCULATION; PARTICLE CHARACTERIZATION; PARTICLE IMPACT; PARTICLE SHAPE;

D O I：

10.1016/0043-1648(94)06588-8

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A series of erosion tests were performed to determine the erosivity of several different circulating fluidized bed materials. The tests were conducted with 1020 steel as the target material at 400 degrees C and particle velocities of 75 m s(-1). The bed material erosivity was found by measuring the sample weight change with time and determining the steady-state erosion rate. It was found that for some conditions, the steel target showed a weight gain owing to soft constituents in the erodent forming a deposit of particle fragments on the surface. Two bed materials were then separated by particle size, ranging from less than 106 mu m to greater than 1400 mu m, and each size fraction was erosion tested. The shape of the particles was measured using a quantitative image analysis system and it was found that particle shape changed with the size fraction of the bed particles, Particle composition, which was also found to vary with particle size, was determined using elemental analysis. Based on these results, the erosion of 1020 boiler tube steel was correlated to the particle characteristics of size, shape, and composition.

引用

页码：33 / 39

页数：7

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