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Chemcial Industry and Engineering 2003, Vol. 20 Issue (2) :63-66    DOI:
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Study of Heat Transfer Enhancement on Wheat Black Liquor in a Novel Three-Phase Circulating Fluidized Bed Evaporator
GAO Zhen-nan,JIA Yuan-yuan,LI Xiu-lun(School of Chemical Engineering,Tianjin University,Tianjin 300072,China)
(School of Chemical Engineering,Tianjin University,Tianjin 300072,China)

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Abstract A novel vapor-liquid-solid three-phase circulating fluidized bed evaporator is applied to vaporize wheat black liquor.Influence of several parameters,including heat flux,flow rate and volume fraction of particles,on flow boiling heat transfer coefficient is discussed.It shows that the three-phase flow boiling hear transfer coefficient increases with the augment of the heat flux,the flow rate of black liquor and the volume fractions of solid particles.Furthermore,as for fluid as viscous as black liquor,using such an evaporator can promote heat transfer coefficient with particles by 20%～30% than that of two-phase without particles.
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Received 2003-03-15; published 2003-03-15
Cite this article:   
GAO Zhen-nan,JIA Yuan-yuan,LI Xiu-lun.Study of Heat Transfer Enhancement on Wheat Black Liquor in a Novel Three-Phase Circulating Fluidized Bed Evaporator[J]  Chemcial Industry and Engineering, 2003,V20(2): 63-66
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