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두 개의 Loopseal을 갖는 KIER 고체순환 유동층공정에서의 압력균형곡선

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

이창근 배달희 선도원 진경태 손재익

Yi CK Bae DH Shun D Jin GT Son JE

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.

Keywords

Pressure Balance Curve Two Fluidized Bed Reactors Loopseal Voidage Hot Gas Desulfurization Particles Circulation Hydrodynamics

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)