서지주요정보
액-액 추출 교반조와 다단 교반 추출탑에서의 물질전달 모사화 연구 = Simulation and experimental analysis of mass transfer in a liquid-liquid constant stirred tank extractor and in a multistage agitated extraction column
서명 / 저자 액-액 추출 교반조와 다단 교반 추출탑에서의 물질전달 모사화 연구 = Simulation and experimental analysis of mass transfer in a liquid-liquid constant stirred tank extractor and in a multistage agitated extraction column / 안병성.
저자명 안병성 ; Ahn, Byoung-Sung
발행사항 [대전 : 한국과학기술원, 1990].
Online Access 제한공개(로그인 후 원문보기 가능)원문

소장정보

등록번호

8001463

소장위치/청구기호

학술문화관(문화관) 보존서고

DCE 9020

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Mass transfer in liquid-liquid dispersion in a stirred tank extractor was investigated experimentally for several particular cases. Since the mass transfer resistance inside the drop depends on internal circulation condition, the mass transfer rate can be predicted from the modified rigid sphere model with the internal circulation correlation factor R. Experimental results show that R is nearly 1, which means that drops are internally stagnant in a stirred tank extractor within the experimental ranges. The ratio of the resistances in the dispersed and the continuous phases was obtained from the proposed equations which were proven to be applicable to calculate the mass transfer coefficients in a stirred tank extractor. The limit conditions in which one of the resistances of the two phases can be ignored were fully discussed. Extraction efficiencies and drop size distributions for the various experimental conditions were predicted and they were well fitted with those obtained from experiments. In order to estimate an extraction performance in a multistage agitated extraction column, a dispersed phase was regarded as ploy-dispersed drops by the application of simulation technique in a stirred tank extractor, and the effect of interactions between drops on the extraction performance was investigated. The flow in the continuous phase was represented by a plug flow and a circulation flow, and then backmixing of the continuous phase was described according to the degree of the circulation flow. Each drop's moving velocity and direction were determined by its terminal velocity and the velocity (forward and backward) of surrounding continuous phase. Hence, in this model, it was possible to express forward mixing and back mixing of the dispersed phase (drops) simultaneously. It is confirmed that terminal velocity of drop in an agitated extraction column can be expressed by Gal-Or/Waslo's equation or by Stokes' equation depending on its size. Measured concentrations of each phase in a 5-stage agitated extraction column were consistent with those calculated by simulation program, MAEC1, within 6% deviation.

서지기타정보

서지기타정보
청구기호 {DCE 9020
형태사항 viii, 166 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 수록
저자명의 영문표기 : Byoung-Sung Ahn
지도교수의 한글표기 : 이원국
지도교수의 영문표기 : Won-Kook Lee
학위논문 학위논문(박사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 105-111
주제 Mass transfer.
Dispersion.
추출. --과학기술용어시소러스
물질 이동. --과학기술용어시소러스
분산. --과학기술용어시소러스
Extraction (Chemistry)
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