Absorption of SO2 from flue gas using PVDF hollow fiber membranes in a gas–liquid contactor

Membrane Gas Absorption Processes: Applications, Design and Perspectives

“…Among the most studied cases are the absorption of CO 2 and its recovery from flue-, bio-, and off gases, the removal of SO 2 , CO, H 2 S, NH 3 , HCN, HCl and VOCs from different streams, the upgrading and desulfurization of biogas produced from anaerobic digesters and landfills, the removal of acid gas from fuel gas mixtures and natural gas, the removal of mercury from natural gas, flue gas and glycol overheads, the separation of olefin-paraffin in petrochemical industry and the removal of specific compounds in indoor air [1,4].…”

“…One of the first membrane absorption experiments using hollow fiber contactors for the simultaneous absorption of SO 2 and CO 2 considered the use of solutions of Na 2 SO 3 [33]. The removal of SO 2 from flue gas has been intensively studied using different types of absorbers such as aqueous solutions of Na 2 SO 3 ,N a 2 CO 3 ,N a H C O 3 and NaOH [4]. Thus, different well-known chemical reactions can be considered depending on the absorber selected:…”

“…From these four chemical reactions, Park et al [4] report that an aqueous solution of Na 2 CO 3 proved to be the most efficient absorber when the feed SO 2 concentration was 400 ppm.…”

“…Hollow fibers can be made in different types of materials such as hydrophobic and hydrophilic polymers [3,4], ceramics [5] and metals [6]. Currently, hydrophobic membranes are widely used in gas-liquid contacting processes because of their larger contact area than the hydrophilic membranes [7].…”

A Study on the Permeance Through Polymer Membranes and Selectivity of CH4/N2

“…기체분리막 제조 및 모듈 본 연구에서는 건/습식 상전이법(dry-wet phase inversion method) 을 이용하여 중공사 형태의 폴리이미드와 폴리이써설폰 막을 제조 하였다 [10][11][12]. 도프용액 조성 및 중공사막 제조 조건은 Table 2에 나타내었으며 중공사막 제조 방법은 이전에 투고된 논문 [13,14] Gas molecular data…”