Effect of Feed Gas Flow Rate on CO2 Absorption through Super Hydrophobic Hollow Fiber membrane Contactor

Quality in Research: International Symposium on Materials, Metallurgy, and Chemical Engineering

材料科学;冶金学;化学工业

Kartohardjono, Sutrasno^1 ; Alexander, Kevin^1 ; Larasati, Annisa^1 ; Sihombing, Ivander Christian^1

Process Intensification Laboratory, Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus Baru UI, Depok

16424, Indonesia^1

关键词: Absorption efficiency;    CO2 absorption;    Feed gas flow;    Fiber membranes;    Heating value;    Inner diameters;    Membrane contactor;    Superhydrophobic;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/316/1/012012/pdf
DOI  :  10.1088/1757-899X/316/1/012012

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Carbon dioxide is pollutant in natural gas that could reduce the heating value of the natural gas and cause problem in transportation due to corrosive to the pipeline. This study aims to evaluate the effects of feed gas flow rate on CO2absorption through super hydrophobic hollow fiber contactor. Polyethyleneglycol-300 (PEG-300) solution was used as absorbent in this study, whilst the feed gas used in the experiment was a mixture of 30% CO2and 70% CH4. There are three super hydrophobic hollow fiber contactors sized 6 cm and 25 cm in diameter and length used in this study, which consists of 1000, 3000 and 5000 fibers, respectively. The super hydrophobic fiber membrane used is polypropylene-based with outer and inner diameter of about 525 and 235 μm, respectively. In the experiments, the feed gas was sent through the shell side of the membrane contactor, whilst the absorbent solution was pumped through the lumen fibers. The experimental results showed that the mass transfer coefficient, flux, absorption efficiency for CO2-N2system and CO2loading increased with the feed gas flow rate, but the absorption efficiency for CO2-N2system decreased. The mass transfer coefficient and the flux, at the same feed gas flow rate, decreased with the number of fibers in the membrane contactor, but the CO2absorption efficiency and the CO2loading increased.