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상용 순환유동층 연소로를 모사한 상온 순환유동층에서 수력학적 특성

Hydrodynamics in a Cold Mode Circulating Fluidized Bed Simulating the Commercial Scale Combustor

HWAHAK KONGHAK, December 1988, 26(6), 599-606(8), NONE
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Abstract

모래를 층물질로 사용하는 상온의 기-고 순환유동층에서 흐름영역의 경계속도와 freeboard 기체출구에서 입자의 비산유출속도를 측정하였다. 고속유동 및 희박상 수송의 시작속도는 고체의 재순환속도가 증가함에 따라 증가하였다. Freeboard 기체출구에서 입자의 비산유출속도는 유속이 증가할수록 그리고 정체층높이가 높을수록 증가하였다. 이울러 입자의 비산유출속도에 관한 모사를 고찰하였다.
The transition velocity between flow regimes and the particle carry-over rate at the freeboard gas exit were measured in a gas-solid circulating fluidized bed which used sand as bed materials at ambient temperature. The onset velocities of the fast fluidization and the dilute transport increased with the increase of the solid circulation rate. The particle carry-over rate at the freeboard gas exit increased with the increase of the gas velocity and the static bed height. Model considerations on the particle carry-over rate were discussed additionally.

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