scholarly journals Numerical Simulation and Analysis of CO2Removal in a Polypropylene Hollow Fiber Membrane Contactor

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Zhien Zhang ◽  
Yunfei Yan ◽  
Li Zhang ◽  
Shunxiang Ju
Keyword(s):  
Hollow Fiber ◽  
Gas Flow ◽  
Liquid Velocity ◽  
Hollow Fiber Membrane ◽  
Pilot Scale ◽  
Membrane Contactor ◽  
Fiber Membrane ◽  
Computational Fluid Dynamics Cfd ◽  
Cfd Method ◽  
Selection Of

This present study shows a comprehensive 2D numerical model for removal of CO2in a polypropylene (PP) hollow fiber membrane contactor (HFMC) using the computational fluid dynamics (CFD) method. Monoethanolamine (MEA) solution was used as the liquid absorbent in a nonwetting mode. The simulation results represented that higher liquid velocity and concentration and lower gas velocity and concentration led to higher percent of CO2removal. The most proper parameters for CO2removal were less than 1 mol m−3gas concentration and 0.2 m s−1gas flow rate, and for MEA the values were above 8 mol m−3concentration and approximately 1 m s−1liquid velocity. Furthermore, the model was validated with the experiment results. Therefore, the modeling results provided references to the selection of absorbents and operation parameters in the experimental study and pilot-scale applications.

Design of a Novel Hollow-Fiber Membrane Contactor for Carbon Dioxide Absorption

2013 ◽  
Vol 777 ◽  
pp. 33-37
Author(s):  
Han Gong ◽  
Jin Sheng Shen
Keyword(s):  
Mass Transfer ◽  
Transfer Process ◽  
Hollow Fiber ◽  
Liquid Velocity ◽  
Hollow Fiber Membrane ◽  
Mass Transfer Process ◽  
Membrane Contactor ◽  
Fiber Membrane ◽  
Carbon Dioxide Absorption ◽  
Absorption Function

In this subject, a new spatial structure of the membrane contactor is explored and designed from analysis of mass transfer process, resistance theory and flow type. Under laboratory conditions, the experiment uses several methods including fluid mechanics, mass transfer process and the analysis of the fluid flow to achieve CO2 absorption function with the new hollow fiber membrane contactor. This new design of device is tested in conditions of two absorption liquids: MEA, DEA; three absorption concentrations: 6L/h, 8L/h, 10L/h; liquid velocity: 1mol/L, 0.5mol/L and air speed: 1L/min, 0.5L/min, to absorb CO2 from the gas mixture to make sure that if it has good properties. Through these experiments, we could see that the new hollow fiber membrane contactor has an increase in absorption efficiency by 10% on average.

scholarly journals Optimization of CO2Absorption Characteristic under the Influence of SO2in Flue Gas by Hollow Fiber Membrane Contactor

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Ziyi Qu ◽  
Li Zhang ◽  
Yunfei Yan ◽  
Shunxiang Ju
Keyword(s):  
Flow Rate ◽  
Hollow Fiber ◽  
Flue Gas ◽  
Gas Flow ◽  
Hollow Fiber Membrane ◽  
Flow Rate Ratio ◽  
Absorption Characteristic ◽  
Membrane Contactor ◽  
Gas Flow Rate ◽  
Fiber Membrane

Hollow fiber membrane contactor is a new, highly efficient, and the most promising technology for CO2absorption in flue gas. There is still SO2that exists in the flue gas after desulfurization tower of power plant. This paper studied the influence of SO2on CO2absorption characteristic in flue gas by hollow fiber membrane contactor with absorbent of EDA, EDA + MEA (0.6 : 0.4), and EDA + MEA + PZ (0.4 : 0.4 : 0.2). The influences of SO2concentration, cycle absorption and desorption characteristic of absorbent, absorbent concentration, and liquid-gas flow rate ratio are studied to analyze the influence of SO2on CO2absorption characteristic. The appropriate absorbent composition ratio and appropriate parameter range that can inhibit the influence of SO2are proposed by studying the hybrid sorbent with activating agent, appropriate absorbent concentration, and ratio of liquid-gas flow rate. Among the three kinds of absorbents, EDA + MEA + PZ (0.4 : 0.4 : 0.2) had the best tolerance ability to SO2and the highest efficiency. With comprehensive consideration of CO2removal efficiency and operating cost, under the condition of 1000 ppm SO2, the appropriate concentration and liquid-gas flow rate ratio of EDA, EDA + MEA, and EDA + MEA + PZ are proposed.

scholarly journals Effect of Feed Gas Flow Rate on CO2Absorption through Super Hydrophobic Hollow Fiber membrane Contactor

2018 ◽  
Vol 316 ◽  
pp. 012012
Author(s):  
Sutrasno Kartohardjono ◽  
Kevin Alexander ◽  
Annisa Larasati ◽  
Ivander Christian Sihombing
Keyword(s):  
Flow Rate ◽  
Hollow Fiber ◽  
Gas Flow ◽  
Hollow Fiber Membrane ◽  
Membrane Contactor ◽  
Gas Flow Rate ◽  
Fiber Membrane
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