| 학회 |
한국화학공학회 |
| 학술대회 |
2011년 봄 (04/27 ~ 04/29, 창원컨벤션센터) |
| 권호 |
17권 1호, p.644 |
| 발표분야 |
유동층 |
| 제목 |
Study on back-shifting and leakage of gas through loop-seals in dual gas fluidized bed reactors |
| 초록 |
Gas leakage between reactors in dual fluidized bed systems (i.e. indirect steam gasification, chemical looping combustion) must be minimized to prevent being diluted with air for increasing efficiency of the overall system.The proper operation of loop-seals in dual fluidized bed is one of the most important points for preventing or minimizing the leakage between reactors. In this study, the modeling and the experiment were done aiming at evaluating the back-shifting and leakage of gas through loop-seals. The model was implemented to determine the direction and the interstitial velocity of solids and gas througha loop-seal. Experiments were also performed using a plexiglas cold flow model withthe down-scaled dimensions of theChalmers gasifier (4MWth), bed materials and gas calculated by applying the Glicksman’s scaling law. CO2 was used as tracer for measuring the leakage through the loop-seal. The dependence of leakage on the fluidization velocities in the loop sealwas mainly investigated. The experimental results showed good quantitative agreement with the predicted model in the studied geometry and conditions. |
| 저자 |
이정우1, 이은도1, 양 원1, 최영태1, Bo Leckner2
|
| 소속 |
1한국생산기술(연), 2Dept. of Energy and Environment |
| 키워드 |
Loopseal; Dual Fluidized Bed; Gas Leakage; Cold Flow Model; Down-scaling
|
| E-Mail |
|
| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
