Articles & Issues

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

All issues

기체 유동상 내에서 고체 입자 혼합에 미치는 온도의 영향

Temperature Effect on Solid Mixing in a Gas-Fluidized Bed

김해식 이원국

Kim HS Lee WK

HWAHAK KONGHAK, April 1979, 17(2), 109-116(8), NONE

Download PDF

Abstract

유동층상에서 유동입자의 혼합효과에 대한 온도의 영향을 채류시간 분포（RTD）를 측정하여 정량적으로 연구하였다. 변수로서 온도와 함께 기체유속, aspect ratio(bed의 직경에 대한 높이의 비)를 고려하였다. 실험의 결과 온도의 상승에 따른 u_mf추정식에 의한 예상보다 실제 빨리 fluidization되기 시작했다. 기체의 유속과 aspect ratio가 유동입자의 혼합효과에 커다란 영향을 미쳤으나 온도의 영향은 작게 나타났다.

The effect of temperature on solids mixing rate was investigated quantitatively by measuring the residence time distribution （TRD） in a co-current gas-solid fluidized bed. The variables selected for this investigation were temperature, gas flow rate and aspect ratio which is ratio of the bed height to diameter. The experimental results showed that the onset of fluidization occurred earlier than the expected velocity as the temperature rise. The results also showed that the gas flow rate and aspect ratio had a marked effect on the mixing pattern of solids, but temperature elevation increased the mixing effect slightly.

Keywords