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이재욱(J.U. Lee),장병대(B.D. Jang),이춘영(C.Y. Lee),박철우(C.W. Park) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
A pump system has been widely used to deliver various fluids in industrial fields. It is also applicable to the oil delivery vehicle by mounting the pump system on the side of the vehicle. In the present study, performance of constant flow rate pumping system for oil tanker truck was investigated experimentally with variation of fluid density and pumping load. As a result, the PID control system worked well according to several different pumping loads despite the various fluid density variations.
황산수용액 중에서 D2EHPA 에 의한 Ga (3) 의 용매추출
이응조,이재욱 대한금속재료학회(대한금속학회) 1990 대한금속·재료학회지 Vol.28 No.3
Solvent extraction of Ga(III) with D₂EHPA in sulfuric acid solutions was studied. The distribution coefficient was increased with an increase of pH and the slope of log D vs. pH was 3. The distribution coefficient was increased with decreasing the concentration of gallium ions in aqueous phase and increasing the concentration of D₂EHPA and temperature. The coefficient was higher with D₂EHPA dissolved in kerosene than in benzene. The McCabe-Thiele diagram showed that two extraction stages with the A/O ratio of 1 would be needed to extract gallium ions effectively.