STUDY ON GAS BUBBLES' BEHAVIOR IN GAS-SOLID TWO-PHASE FLUIDIZED BED BY USING IMAGE METHOD

doi:10.19666/j.rlfd.2005.01.005

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STUDY ON GAS BUBBLES' BEHAVIOR IN GAS-SOLID TWO-PHASE FLUIDIZED BED BY USING IMAGE METHOD

Thermal Power Generation Issue 1, Pages: 16-19(2005)

更新时间：2025-09-28

- STUDY ON GAS BUBBLES' BEHAVIOR IN GAS-SOLID TWO-PHASE FLUIDIZED BED BY USING IMAGE METHOD
- 作者机构：
  
  1. 浙江大学,浙江,杭州,310027
  2. ,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.2005.01.005
  CLC： TK229.6
- Published：2005
- 稿件说明：
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STUDY ON GAS BUBBLES' BEHAVIOR IN GAS-SOLID TWO-PHASE FLUIDIZED BED BY USING IMAGE METHOD[J]. Thermal Power Generation, 2005, (1): 16-19.
DOI：

STUDY ON GAS BUBBLES' BEHAVIOR IN GAS-SOLID TWO-PHASE FLUIDIZED BED BY USING IMAGE METHOD[J]. Thermal Power Generation, 2005, (1): 16-19. DOI： 10.19666/j.rlfd.2005.01.005.

摘要

利用高速CCD拍摄气固两相流化床中气泡的运动行为

通过对气泡边界的识别得到了气泡中心坐标

并计算了气泡面积和上升速度。试验发现

气泡在床层上升过程中长大

上升速度变快 ;气泡的上升速度和产生频率随着气体流量的增加而增大 ;如果流化风速较高

流化床中容易产生 2个或 2个以上的气泡

并会发生气泡的聚并现象

Abstract

The picture for moving behavior of gas bubbles in gassolid twophase fluidized bed had been taken by using high speed CCD

the coordinate of gas bubble’s centre being obtained through recognition of the gas bubble’s margin

the area and rising speed of the gas bubble being calculated. It was found from tests that the gas bubbles’ growup in rising course of the bed layer

and their rising speed became fast; the rising speed and generation frequency of gas bubbles increase along with the increament of gas flow; if the fluidized air velocity was higher

two or more gas bubbles may easily generated in the fluidized bed

and the phenomenon of gathering together for gas bubbles may occure.

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