| 학회 |
한국화학공학회 |
| 학술대회 |
2007년 봄 (04/19 ~ 04/20, 울산 롯데호텔) |
| 권호 |
13권 1호, p.878 |
| 발표분야 |
유동층 |
| 제목 |
Flow Regimes in a Circulating Fluidized Bed for Heavy Naphtha Catalytic Cracking Process |
| 초록 |
Understanding of flow regimes in a Circulating Fluidized Bed (CFB) riser is important because different flow regimes cause different gas-solid mixing that may governs different chemical reaction conversion. To determine the optimum operating conditions for the scale-up of the heavy naphtha catalytic cracking process, the effects of gas velocity (1.5-3.5 m/s) and solids circulation rate (20-100 kg/m2s) on solid phase holdup were determined in a 5 cm-ID and 6 m-height circulating fluidized bed. By analyzing the time required to empty out all solids from the riser of the CFB, the transport velocity was determined which is the minimum gas velocity required to develop a stable fast fluidization flow regime. In the transition between the dense and dilute regions, the S-shaped solid phase holdup profiles were measured as a function of solids circulation rate and gas velocity. |
| 저자 |
김국희1, 김상돈1, 김지민2, 박덕수2, 김용승2
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| 소속 |
1한국과학기술원, 2SK 기술원 |
| 키워드 |
circulating fluidized bed; flow regime; heavy naphtha catalytic cracking
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| E-Mail |
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| 원문파일 |
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