서지주요정보
알카놀 아민류 수용액에서 첨가제가 이산화탄소의 흡수에 미치는 영향 = Effect of additives on the absorption of carbon dioxide into aqueous alkanolamine solutions
서명 / 저자 알카놀 아민류 수용액에서 첨가제가 이산화탄소의 흡수에 미치는 영향 = Effect of additives on the absorption of carbon dioxide into aqueous alkanolamine solutions / 서동주.
저자명 서동주 ; Seo, Dong-Joo
발행사항 [대전 : 한국과학기술원, 2000].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8011490

소장위치/청구기호

학술문화관(문화관) 보존서고

DCHE 00019

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

The effect of additives (piperazine, MEA) on the absorption of carbon dioxide into aqueous alkanolamine solutions were determined. A wetted-sphere absorption apparatus was used to measure the absorptionrate. The base-catalyzed hydration mechanism was used to interpret the kinetic data of aqueous solutions of MDEA. And the zwitterion deprotonation mechanism was used to interpret the kinetic data of aqueous solutions of AMP. The rate of absorption of $CO_2$ into aqueous solutions of alkanolamine and mixtures of alkanolamine and additives were measured using a wetted-sphere absorber. The radius of sphere was 0.0327 m in this study. The flow rate of aqueous solutions of alkanolamine and mixtures of alkanolamine and additives was varied between $8.3\times10^{-7}-3.3\times10^{-6}m^3/s$ to make stable film on the sphere surface. The system temperature was controlled within ±O.5℃ of the set point temperature. The total pressure of system was about 1 atm. The liquid feed enters at the bottom of sphere and passes through the inside of tube. The liquid runs down along the sphere suface and outside of tube, making smooth film. The distance between the bottom of sphere and liquid level of the receiver was controlled by liquid level controller to reduce the exit effect. The $CO_2$ feed flows to purge the absorption chamber and the tubing, and fills them with $CO_2$. Then $CO_2$ turned off, and the gas filled in the long tubing started to flow into the absorption chamber. The gas flow rate into absorption chamber from the tubing was measured to find absorption rate. The reaction kinetics of $CO_2$ with aqueous MDEA and piperazine added aqueous MDEA solutions were investigated. The apparent reaction rate constant increases with increasing MDEA concentration without pjperazine. But the apparent reaction rate censtant decreases with increasing MDEA concentration with piperazine. The apparent reaction rate constant significantly increases with increasing piperazine concentration. The highly concentrated MDEA solution needs more piperazine to activate reaction rate. The activation of reaction rate depends on the mole ratio of pjperazine and MDEA. The absorption of $CO_2$ into aqueous mixtures of AMP and piperazine was investigated. The absorption rates of $CO_2$ into aqueous solutions of AMP in the range of 0.55-3.35 kmo]/m3 were measured at 303 and 313K. The zwitterion deprotonation mechanism was used to interpret the kinetic data of aqueous solutions of AMP. The absorption rates of aqueous mixtures of AMP and piperazine were measured. Piperazine was added 0.058, 0.115 and 0.233 kmo1/m3 for each AMP solutions. The apparent reaction rate constants increased with the addition of piperarine. The reaction rate of $CO_2$ with aqueous solutions of AMP increased with the addition of piperazine due to the contribution of the zwitterion deprotonation and the direct reaction of piperazine with $CO_2$. The zwitterion deprotonation constants of all the bases($H_2O, OH and amines) presented in liquid and the direct reaction rate constant of piperazine were obtained. The absorption of $CO_2$ into aqueous mixtures of AMP and MEA was investigated. The absorption rates of $CO_2$ into aqueous solutions of AMP in the range of 0.55-3.35 kmo1/m3 were measured at 303 and 313K. MEA was added 0.08 and 0.16 kmol/m3 for each AMP solutions.The apparent reaction rate constants also increased with the addition of MEA. The reaction rate of $CO_2$ with aqueous solutions of AMP increased with the addition of MEA due to the contribution of the zwitterion deprotonation and the direct reaction of MEA with $CO_2$. The zwitterion deprotonation constants of all the bases($H_2O, OH and amines) presented in liquid and the direct reaction rate constant of MEA were obtained. It is shown that the small addition of additives(piperazine, MEA)can promote the reaction rate of MDEA and AMP. The apparent reaction rate constants correlated with the proposed model in this study agreed well with the measured values.

서지기타정보

서지기타정보
청구기호 {DCHE 00019
형태사항 vii, 134 p. : 삽도 ; 26 cm
언어 한국어
일반주기 Appendix : A, Derivation of equation of the diffusion from the free surface into a liquid film in laminar flow over a sphere. - B, Experimental data
저자명의 영문표기 : Dong-Joo Seo
지도교수의 한글표기 : 홍원희
지도교수의 영문표기 : Won-Hi Hong
수록잡지명 : "Effect of piperazine on the kinetics of carbon dioxide with aqueous solutions of 2-amino-methyl-1-propanol". Industrial and engineering chemistry research, v. 39, pp. 2062-2067(2000)
학위논문 학위논문(박사) - 한국과학기술원 : 화학공학과,
서지주기 참고문헌 : p. 113-119
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