서지주요정보
내부순환유동층에서의 수력학적 특성 = Hydrodynamics of an internally circulating fluidized bed
서명 / 저자 내부순환유동층에서의 수력학적 특성 = Hydrodynamics of an internally circulating fluidized bed / 김요한.
저자명 김요한 ; Kim, Yo-Han
발행사항 [대전 : 한국과학기술원, 2001].
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소장정보

등록번호

8012433

소장위치/청구기호

학술문화관(문화관) 보존서고

MCHE 01034

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초록정보

Hydrodynamic properties in an internally circulating fluidized bed (0.28 m I.D. × 2.6 m height) with a draft tube (0.1 m I.D. × 0.9 m height) have been determined. The effects of impact cap, particle size (86, 120, 170, 288 ㎛), inlet gas velocities to the draft tube (fluidized bed, up to 1.6 m/s) and to the annulus (moving bed, up to 0.125 m/s) on the bed voidage, solids circulation rate, elutriation and pressure drop across the orifices have been determined. The solids circulation rate has been measured by using two thermistor probes. Pressure drop across the orifices, the solids circulation rate and fluidized bed voidage increase with increasing gas velocity to the draft tube up to the ratio of gas velocity to the draft tube to terminal velocity $(U_d/U_t)$ of 1.8. Elutriation is greatly enhanced by increasing gas velocity to the draft tube. The solids circulation rate increases with increasing gas velocity to the annulus up to the minimum fluidization condition. Impact cap has a little effect on soilds circulation rate, bed voidage and pressure drop across the orifices below $U_d/U_t$ of 1.8. But elutriation decreases by 60 % with the impact cap. Solids circulation rate, pressure drop across the orifices and bed voidage decrease with increasing gas velocity to the draft tube above two times of terminal velocity $(2U_t)$. The obtained pressure drop across the orifices in an internally circulating fluidized bed with a draft tube has been correlated as ▷수식 삽입◁(원문을 참조하세요) ($U_d/U_t ≤ 1.8$, with or without impact cap) The obtained solids circulation rate has been correlated with the experimental variables as ▷수식 삽입◁(원문을 참조하세요) ($U_d/U_t ≤ 1.8$, with or without impact cap)

서지기타정보

서지기타정보
청구기호 {MCHE 01034
형태사항 vii, 95 p : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Yo-Han Kim
지도교수의 한글표기 : 김상돈
지도교수의 영문표기 : Sang-Done Kim
학위논문 학위논문(석사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 92-95
주제 내부순환유동층
고체입자의 순환속도
Internally circulating fluidized bed
Solids circulation rate
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