標題：Conjugated mass transfer of CO2 absorption through concentric circular gasliquid membrane contactors 

學年  110 

學期  1 

出版（發表）日期  2021/09/03 

作品名稱  Conjugated mass transfer of CO2 absorption through concentric circular gasliquid membrane contactors 

作品名稱（其他語言）  

著者  Ho, C.D.; H. Chang; Y.H. Chen; J.W. Lim; J.W. Liou 

單位  

出版者  

著錄名稱、卷期、頁數  Processes 9(9), 1580 

摘要  A new design of gas absorption that winds the permeable membrane onto an inner concentric tube to conduct a concentric circular gas–liquid membrane module has been studied theoretically in the fully developed region. An analytical formulation, referred to as conjugated Graetz problems, is developed to predict the concentration distribution and Sherwood numbers for the absorbent fluid flowing in the shell side and CO2/N2 gas mixture flowing in the tube side under various designs and operating parameters. The analytical solutions to the CO2 absorption efficiency were developed by using a twodimensional mathematical modeling, and the resultant conjugated partial differential equations were solved analytically using the method of separation variables and eigenfunction expansion in terms of power series. The predictions of CO2 absorption rate by using Monoethanolamide (MEA) solution in concentric circular membrane contactors under both concurrent and countercurrentflow operations are developed theoretically and confirmed with the experimental results. Consistency in both a good qualitative and quantitative sense is achieved between the theoretical predictions and experimental results. The advantage of the present mathematical treatment provides a concise expression for the chemical absorption of CO2 by MEA solution to calculate the absorption rate, absorption efficiency, and average Sherwood number. The concentration profiles with the masstransfer Graetz number, inlet CO2 concentration, and both gas feed and absorbent flow rates are also emphasized. Both theoretical predictions and experimental results show that the device performance of the countercurrentflow operation is better than that of the concurrentflow device operation. The availability of such simplified expressions of the absorption rate and averaged Sherwood as developed directly from the analytical solutions is the value of the present study. 

關鍵字  CO2 absorption;MEA absorbent;absorption rate;membrane contactor;conjugated graetz problem;concentric circular module 

語言  英文 

ISSN  22279717 

期刊性質  國外 

收錄於  SCI; 

產學合作  

通訊作者  

審稿制度  否 

國別  瑞士 

公開徵稿  

出版型式  ,電子版 

相關連結  

SDGs  


Google+ 推薦功能，讓全世界都能看到您的推薦！