화학공학소재연구정보센터
HWAHAK KONGHAK, Vol.22, No.6, 347-354, December, 1984
유동층전극반응기내 물질전달
Mass Transfer in Fludized-Bed Electrode Reactors
초록
산성구리용액으로 전도성입자(구리입자) 그리고 비전도성입자(유리구)를 유동화시키며 음극 고정측정단자와 자유로이 움직이는 측정단자에 의하여 유동층반응기내 입자-유체간 물질전달속도를 측정하였다. 그 결과 :
1) 전도성입자 유동층전극반응기에서 물질전달 상관식은
j Mε = 0.78(Re,p/1-ε)-0.50(dp/dH)-0.50
이때 실험범위는 38<Re,p/1-ε<380 이었고 Re,p는 입자경을 기준한 Reynolds number이다.
2) 비전도성입자 유동층반응기에서 물질전달 상관식은
j Mε = 0.71(Re,p/1-ε)-0.41(dp/dH)-0.41
이때 실험범위는 17<Re,p/1-ε<210 이다.
Mass transfer rates between particles and electrolyte have been determined by means of the fixed or moving electrodes in the beds of conducting copper particles and of nonconducting glass beads which were fluidized by acidified copper solution. The experiment have been carried out with the variation of bed expansion, particle size, and bed height.
1) Mass transfer data with the active fluidized bed of conducting copper particles in the range 38<Re,p/1-ε<380 were correlated by the equation
j Mε = 0.78(Re,p/1-ε)-0.50(dp/dH)-0.50
the Reynolds number(Re,p) is based on the particle diameter.
2) Mass transfer data within the fluidized bed of inert glass particles in the range 17<Re,p/1-ε<210 were correlated by the equation
j Mε = 0.71(Re,p/1-ε)-0.41(dp/dH)-0.41
the dH is the mean hydraulic diameter.