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순환식 MSMPR 결정기를 이용한 AUC 제조공정의 시동동특성
Start-up Dynamics for AUC Production in a Recirculation MSMPR Crystallizer
HWAHAK KONGHAK, August 1982, 20(4), 275-282(8), NONE
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Abstract
특허에 제시된 방법에 따라 연속식 MSMPR 결정기내에서 AUC를 제조하고 그 시동동특성을 연구하였다.
일반적으로 정상상태의 입도분석에서 성장속도와 핵생성속도를 결정하고 Population 수지식과 물질 수지식을 이용하면 전이상태의 특성을 해석할 수 있으나 본 연구에서와 같이 이차핵생성효과가 중요한 경우에는 핵생성속도는 전이상태에서 구하여야 한다. 본 연구에서는 이들 성정속도와 핵성성속도를 결정하고 이들을 사용하여 시동동특성을 해석하여 실험치와 비교하였다.
일반적으로 정상상태의 입도분석에서 성장속도와 핵생성속도를 결정하고 Population 수지식과 물질 수지식을 이용하면 전이상태의 특성을 해석할 수 있으나 본 연구에서와 같이 이차핵생성효과가 중요한 경우에는 핵생성속도는 전이상태에서 구하여야 한다. 본 연구에서는 이들 성정속도와 핵성성속도를 결정하고 이들을 사용하여 시동동특성을 해석하여 실험치와 비교하였다.
AUC（Ammonium Uranyl tri-Carbonate） was produced in a recirculation MSMPR (Mixed Suspension Mixed Product Removal) crystallizer by reacting uranium solution with ammonia and CO2, and the start-up dynamics for the precipitation was studied.
Generally kinetic equations determined from the steady state crystal size distribution are used with the population balance equation and the mass balance equation to give the transient characteristics of crystallizers. However, when the secondary nucleation effect is predominant as in this study, the birth function needs to be determined from the start-up data. In this study, using tne growth funcion and the birth function determined from experimental data the transient behavior for the starup of the crystallizer was analyzed and compared with experimental results.
Generally kinetic equations determined from the steady state crystal size distribution are used with the population balance equation and the mass balance equation to give the transient characteristics of crystallizers. However, when the secondary nucleation effect is predominant as in this study, the birth function needs to be determined from the start-up data. In this study, using tne growth funcion and the birth function determined from experimental data the transient behavior for the starup of the crystallizer was analyzed and compared with experimental results.
