摘要:

AbstractThe present work is concerned with an experimental study of the influence of mass transfer on the holdup of countercurrent liquid‐liquid fluidized systems and the effect of solute on droplet coalescence. Of particular importance in the results obtained is the dramatic demonstration that mass transfer greatly influences the holdup when solute is being extracted from the discontinuous phase loading to strong coalescenc

ISSN:0001-1541    

DOI:10.1002/aic.690110133

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

摘要:

AbstractA generalized method has been developed for the prediction of the diffusivity and thermal conductivity of nonpolar gases for temperatures up to 10,000°K. This method is applicable to monatomic gases and to diatomic gases existing in their molecular and dissociated states. Dimensional analysis has been used to obtain relationships for self‐ and mutual diffusivities and for the translational contribution to the thermal conductivity of these substances. For the internal contribution to thermal conductivity, a modified Eucken‐factor relationship is presented. Furthermore, relationships have been developed for the calculation of these transport properties for the equilibrium mixture of a dissociating

ISSN:0001-1541    

DOI:10.1002/aic.690110134

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

摘要:

AbstractA modified thermistor anemometer probe was used to measure solid particle flow patterns in a 9.5‐in. diameter fluidized bed. The probe was calibrated and found to measure the direction and mass velocity of the silica‐alumina cracking catalyst used. Flow patterns were determined at heights of 6.5, 12.5, 18.5, and 24.5 in. above the support plate with superficial air velocity from 0.25 to 1.00 ft./sec. and bed depths of 14 to 30 in.Radial flow patterns were found not to be symmetrical about the axis of the bed but were similar at angles of 60 deg. This indicated that there were six similar particle flow pattern sections around the column axis.The percentage of the cross‐sectional area of the fluidized bed through which the particle flow is upward was found to be approximately 60%. There was no definite dependence of this area on any of the variables studied.The catalyst bulk circulation rate, defined as the average mass velocity of the particles at a given cross section in a fluidized bed without regard to the direction of flow, was determined for each fluidization condition and correlated as a function of the superficial air velocity and the ratio of the distance above the support plate to the height of the fluidize

ISSN:0001-1541    

DOI:10.1002/aic.690110135

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690110137

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690110138

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690110139

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690110103

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690110101

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY