Technico‐economical assessment of MFI‐type zeolite membranes for CO₂ capture from postcombustion flue gases

Abstract

A detailed survey of the effect of moisture on the CO2/N2 permeation and separation performance of Mobile Five (MFI) zeolite membranes in view of downstream postcombustion CO2 capture applications in power plants and incinerators is presented. The membranes, displaying a nanocomposite architecture, have been prepared on α‐alumina tubes by pore‐plugging hydrothermal synthesis at 443 K for 89 h using a precursor clear solution with molar composition 1 SiO2:0.45 tetrapropylammonium hydroxide:27.8 H2O. The synthesized membranes present reasonable permeation and CO2/N2 separation properties even in the presence of high water concentrations in the gas stream. A critical discussion is also provided on the technico‐economical feasibility (i.e., CO2 recovery, CO2 purity in the permeate, module volume, and energy consumption) of a membrane cascade unit for CO2 capture and liquefaction/supercritical storage from standard flue gases emitted from an incinerator. Our results suggest that the permeate pressure should be kept under primary vacuum to promote the CO2 driving force within the membrane. © 2011 American Institute of Chemical Engineers AIChE J, 58: 3183–3194, 2012

Investigating the influence of diffusional coupling on mixture permeation across porous membranes

“…There is no experimental technique for direct determination of the exchange coefficients 12 , that quantify molecule-molecule interactions. For this reason we use molecular dynamics (MD) simulation data from the literature [13,14,[16][17][18][19]] to obtain the necessary insights and inputs.…”

“…1). The Maxwell-Stefan (M-S) formulation for mixture diffusion is most commonly used for modeling membrane permeation [5,[9][10][11][12][13][14]. Solution of the M-S equations for steady-state binary mixture permeation results in the following set of equations for the permeation fluxes…”

Perspective of microporous metal–organic frameworks for CO2capture and separation

“…302 In the case of separation of CO 2 /N 2 mixtures, many zeolite membranes such as MFI, FAU, SAPO-34, DD3R and T show very good separation performances. 303 The separation of these zeolite membranes for CO 2 /CH 4 separation are typically not as good as for CO 2 /N 2 . 304 The research on MOF membranes for CCS lags signicantly behind the bulky MOF materials.…”

Membrane-based carbon capture from flue gas: a review

“…Pera-Titus (2014) presented a review of inorganic materials that may be suitable for use in polymer membranes for CO 2 capture. Inorganic fillers trialed have included zeolites (Bastani et al, 2013;Junaidi et al, 2014;Nik et al, 2011;Sublet et al, 2012), carbon nanotubes Aroon et al, 2013;Rajabi et al, 2013), and metal organic frameworks (MOFs) (Nafisi and Hagg, 2014;Perez et al, 2009). The inorganic fillers have been found to improve both the permeability and selectivity of membranes over the base polymer and also effectively restrict the mobility of polymer changes at high CO 2 partial pressures, thus suppressing CO 2 induced plasticization (Shahid and Nijmeijer, 2014).…”