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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Chemical Engineering Research
Journal Basic Information
Journal DOI :
The Korean Institute of Chemical Engineers
Editor in Chief :
Volume & Issues
Volume 9, Issue 4 - Dec 1971
Volume 9, Issue 3 - Oct 1971
Volume 9, Issue 2 - Jun 1971
Volume 9, Issue 1 - Apr 1971
Selecting the target year
Study on the Bulk Flow Rate Index and Heat Transfer in a Fludized Bed
Choi, Cheong-Song ; Doh, Dong-Sup ; Kang, Woong-Ki ;
Korean Chemical Engineering Research, volume 9, issue 3, 1971, Pages 113~113
In this investigation, the heat transfer coefficient in an air-solid fludized bed was correlated with the bulk flow rate index which was measured in terms of the buoyancy of a spherical float within the fludized bed. The bulk flow rate index was largely affected by the air flow rate and the particle characteristics as well as the inlet gas distributor, and the radial profile of the flow rate index was similar to that of the heat transfer coefficient. The results of the present study show that the heat transfer coefficient can be determined as a function of the bulk flow rate index.
Vapor-Liquid Equilibria of Ester-Alcohol Systems (II)
Park, Won-Kyu ;
Korean Chemical Engineering Research, volume 9, issue 3, 1971, Pages 121~121
Binary vapor-liquid equilibrium data for the systems, MeOH-EtAc, EtAc-EtOH, EtAc-n-PrOH and EtAc-n-BuOH, were measured under atmospheric pressure using methods developed for MeAc-Alcohol systems presented in a previous report. The measured x-y data were discussed to be correct or not, by means of Herington's consistency test, and the relationships between the liquid composition and Q-function or activity coefficient. Van Laar's constants A, B were determined experimentally and compared with previously published values. The author determined the constants for Prahl's equation using the experimental data, corrected the azeotropic composition of MeOH-EtAc system, also suggested density-composition relation at
, and obtained the smoothed data of vapor-liquid equilibria at the atmospheric pressure for the EtAc-Alcohol systems.
Physical Characteristics of Polyphenyleneisoxazole
Hong, Suck-Ju ;
Korean Chemical Engineering Research, volume 9, issue 3, 1971, Pages 133~133
A highly crystalline polyphenyleneisoxazole from the condensation reaction of terephthalohydroxamoyl chloride with 1, 4-diethynylbenzene was consisted of smaller conjugation, which was demonstrated by the electronic spectra. The electric conductivity was decreased with elevating temperature. The correlation of electric conductivity with crystalline structure was studied.
Study on the Flue (briquet) Gas Components and Treatment of the Gases
Rhim, Jin-Nam ;
Korean Chemical Engineering Research, volume 9, issue 3, 1971, Pages 137~137
Theoretical equation was established for calculating the conversion of carbon monoxide in the primary flue gas into carbon dioxide by contacting the primary flue gas with the secondarily introduced fresh air. The experimental results confirmed the usefulness of this equation. Though the combustion mechanism of the briquet (22 holes) may be much complicated, the mechanism of combustion could be simplified by careful attention upon the gas phase reaction ; the considerable extent of carbon monoxide in the primary flue gas could be converted into carbon dioxide by the intimate contact with hot fresh secondary air which was heat exchanged during it's introduction through the pipe installed at the center or the side of the briquet furnace. The gas treating experiment was made to decrease the carbon monoxide content in the flue gas by using ash-briquet. The ash-briquet was placed on the upper part of burning briquets. The gas analysis showed the following ; when temperature of ash-briquet was below about
, adsorption of carbon monoxide and dioxide into the porous briquet was verified. As the temperature went up to about
desorption of the gases from the ash-briquet was observed.
Modified Filtration Theory for Microstrainer Design
Kim, Byeong-Jo ; Qasim, Syed R. ; Verma, Rameshwar D. ;
Korean Chemical Engineering Research, volume 9, issue 3, 1971, Pages 149~149
The use of microstrainers in the water and wastewater engineering field is expected to increase in the future. Currently employed design methods for microstrainers are based on Boucher's straining law which assumes a constant rate of flow. The assumption of a constant pressure head is more appropriate than that of a constant flow rate. Governing equations describing the hydraulics of filtration through microstrainers based on these two assumptions are analyzed and compared.