Flue gas carbon capture using hollow fiber membrane diffuser-separator

Mineral Processing and Technology International Conference 2017

Ariono, D.^1 ; Chandranegara, A.S.^1 ; Widodo, S.^1,2 ; Khoiruddin^1 ; Wenten, I.G.^1

Department of Chemical Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung

40132, Indonesia^1

PPPTMGB LEMIGAS, Balitbang KESDM, Jl. Ciledug Raya, Kav. 109, Cipulir, Kebayoran Lama, Jakarta

12230, Indonesia^2

关键词: CO2 concentration;    Gas and liquid flows;    Hollow fiber membranes;    Liquid flow rates;    Membrane diffuser;    Polypropylene membrane;    Separation performance;    Steady-state operation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/285/1/012010/pdf
DOI  :  10.1088/1757-899X/285/1/012010

来源: IOP

【 摘 要 】

In this work, CO2removal from flue gas using membrane diffuser-separator was investigated. Hollow fiber polypropylene membrane was used as the diffuser while pure water was used as the absorbent. Separation performance of the membrane diffuser-separator as a function of CO2concentration (6-28%-vol.) and flow rate (gas: 0.8-1.55 L.min-1and liquid: 0.2-0.7 L.min-1) was investigated and optimized. It was found that CO2removal was significantly affected by CO2concentration in the feed gas. On the other hand, CO2flux was more influenced by flow rates of liquid and gas rather than concentration. The optimized CO2removal (64%) and flux (1 x 10-4mol.m-2.s-1) were obtained at the highest gas flow rate (1.55 L.min-1), the lowest liquid flow rate (0.2 L.min-1), and 6.2%-vol. of CO2concentration. Outlet gas of the membrane diffuser system tends to carry some water vapor, which is affected by gas and liquid flow rate. Meanwhile, in the steady-state operation of the separator, the gas bubbles generated by the membrane diffuser take a long time to be completely degassed from the liquid phase, thus a portion of gas stream was exiting separator through liquid outlet.