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두 개의 Loopseal을 갖는 KIER 고체순환 유동층공정에서의 압력균형곡선

Pressure Balance Curves in KIER Solid Circulating Fluidized Process with Two Loopseals

HWAHAK KONGHAK, August 1999, 37(4), 604-608(5), NONE
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Abstract

고온건식탈황공정은 황화반응기와 재생반응기, 그리고 둘 사이의 고체순환관을 필요로 한다. 본 연구에서는 하난의 유동층 반응기, 하나의 riser반응기, 그 둘을 이어주는 두 개의 loopseal을 갖는 KIER 고온건식탈황 시스템에서 두 반응기 사이의 고체순환특성을 관찰하기 위하여 압력균형이 측정되었다. 내경 3cm riser와 내경 7.5cm의 유동층 반응기의 상온장치의 여러 점에서 차압이 측정되어 voidage와 기-고 평균 층밀도가 계산되었다. 압력균형고리가 하나의 닫힌 계로 표현되었기 때문에 고체순환이 원활한 것으로 판단되었고, loopseal은 역흐름을 차단하는 역할을 하였기 때문에 본 시스템은 기계적 밸브를 사용하지 않고도 두 종류의 반응이 일어나는 고온건식탈황 반응기에서 사용할 수 있는 가능성을 보여 주었다.
KIER hot gos desulfurization system consisting of a reactor of a transport mode, a regenerator of a fluidized bed mode, two loopseals, and two gas streams was tested for the stable operation of circulating solids between two reactors. Pressures in a circulation loop at various conditions were measured in a cold mode(a 0.03 m I.D. riser and a 0.075m I.D. fluidized bed) with particles of mean diameter of 87×10-6 m and the bulk and particle density of 1,900 and 3,300 kg/m3 respectively. The voidages and mixture densities of gas-solid at various sections were analyzed from differential pressures data. The continuous circulation of solids was confirmed by the single closed loop of pressure balance curves. The loopseal took a role of preventing the gas of a reactor from flowing to another reactor.

References

Kuni D, Levenspiel O, "Fluidization Engineering," 2nd ed., Butterworth-Heinemann, Boston, 36 and 359 (1991)
Korean Patent: 0223776 (1999)
Geldart D, Powder Technol., 7, 185 (1978)

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