Circulating fluidized beds - diameter, solids hold-up, axial gas-mixing, and contact efficiency

被引：10

作者：

Contractor, R ^{[1
]}

Dry, RJ ^{[1
]}

White, C ^{[1
]}

Mao, QM ^{[1
]}

Konstantinidis, S ^{[1
]}

Potter, OE ^{[1
]}

机构：

[1] Monash Univ, Dept Chem Engn, Clayton, Vic 3168, Australia

来源：

POWDER TECHNOLOGY | 2000年 / 111卷 / 1-2期

关键词：

solid hold-up; axial gas-mixing; contact efficiency;

D O I：

10.1016/S0032-5910(00)00249-7

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Circulating fluidized beds (CFB) employed comprised: 0.0158 m riser diameter with 7.2 m height, 0.09 m riser diameter with 7.2 m height or 3.6 m height, and 0.254 m riser diameter with 10.5 m height. Measurements reported hen comprise solid hold-up and axial gas-mixing. Solid circulation rates up to 350 kg/m(2) s and gas velocities of 2, 4, 6, 8 ms were employed. Axial dispersion measurements using a non-adsorbed tracer confirm relatively low dispersion in the 0.0158 m dia riser. and for the 0.254 m dia riser a continual monotonic increase in axial dispersion with increase in air velocity up to 8 m/s. "Contact efficiency" (Dry) measurements were made for the 0.0158 and 0.254 m dia risers. in the 0.254 m dia riser, all "contact efficiencies" were measured at 100%. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：132 / 144

页数：13

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