Polyimide hollow fiber membranes for CO2 separation from wet gas mixtures

Falbo, Francesco; Tasselli, Franco; Brunetti, Adele; Drioli, Enrico; Barbieri, Giuseppe

doi:10.1590/0104-6632.20140314s00003031

Cited by 41 publications

(20 citation statements)

References 39 publications

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“…The hollow fibre membranes preparation was carried out according to the dry-jet wet spinning technique. Details on the preparation of the polymer solution (dope), on the spinning setup and on membrane modules were reported in a previous paper [20]. Membrane modules were prepared with the fibres produced, assembling ten fibres 20 cm long for a total membrane area of 52 cm 2 .…”

Section: Hollow Fibre Preparationmentioning

confidence: 99%

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CO2/CH4 separation by means of Matrimid hollow fibre membranes

et al. 2016

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CO 2 /CH 4 mixtures separation was investigated using Matrimid Ò 5218 hollow fibre membranes and measuring the membrane flux feeding singly CH 4 and CO 2 and their mixtures, with CH 4 concentration ranging from 5 to 70 % molar. Specific attention was paid to membrane properties at a high temperature (up to 75°C) and feeding humidified streams, not yet particularly investigated, in a pressure range 400-600 kPa. The membrane properties were restored when water vapour was removed and temperature decreased stating the excellent hydro-thermal stability of these membranes. Maps of the separation performance were also calculated for a range of operating conditions wider than the experimental one paying specific attention to the feed/permeate pressure ratio further to membrane selectivity and permeance. Single and multistage membrane separation systems were investigated using these maps. The prepared Matrimid Ò 5218 hollow fibres showed very good performance in terms of flux and selectivity for temperatures up to 60°C, also in steam saturated conditions, allowing a methane concentration meeting the specification for its injection into the grid.

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Section: Hollow Fibre Preparationmentioning

confidence: 99%

“…Polyimide hollow fibre membranes are an alternative to cellulose acetate, because they combine excellent thermal and chemical stability and show a high water resistance [20] in biogas upgrading. They are commercialized by UBE Industries [21] and Air Liquide Medal [22].…”

Section: Introductionmentioning

confidence: 99%

CO2/CH4 separation by means of Matrimid hollow fibre membranes

et al. 2016

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“…): PSf [35] and Matrimid [33,34] membranes, respectively. A permeate stream with high light species concentration was recovered owing to the high selectivity of the membrane.…”

Section: Plant Schemes For Butenes Production and Capturementioning

confidence: 99%

An Integrated Membrane Process for Butenes Production

et al. 2016

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Iso-butene is an important material for the production of chemicals and polymers. It can take part in various chemical reactions, such as hydrogenation, oxidation and other additions owing to the presence of a reactive double bond. It is usually obtained as a by-product of a petroleum refinery, by Fluidized Catalytic Cracking (FCC) of naphtha or gas-oil. However, an interesting alternative to iso-butene production is n-butane dehydroisomerization, which allows the direct conversion of n-butane via dehydrogenation and successive isomerization. In this work, a simulation analysis of an integrated membrane system is proposed for the production and recovery of butenes. The dehydroisomerization of n-butane to iso-butene takes place in a membrane reactor where the hydrogen is removed from the reaction side with a Pd/Ag alloys membrane. Afterwards, the retentate and permeate post-processing is performed in membrane separation units for butenes concentration and recovery. Four different process schemes are developed. The performance of each membrane unit is analyzed by appropriately developed performance maps, to identify the operating conditions windows and the membrane permeation properties required to maximize the recovery of the iso-butene produced. An analysis of integrated systems showed a yield of butenes higher than the other reaction products with high butenes recovery in the gas separation section, with values of molar concentration between 75% and 80%.

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“…The membrane technology for gas separation has remarkable advantages such as low energy consumption, simplicity in manipulation, convenience of scale up and environmental sustainability compared with traditional separation processes. [1][2][3][4][5] These outstanding benefits endow membrane-based gas separation a competitive technology in the region of CO 2 removal from natural gas and flue gas, hydrogen purification, CO 2 capture, and so on. [6][7][8] Among several membrane configurations, hollow fiber membrane (HFM) with asymmetric structure is a better scalable geometry for large-scale gas separation applications.…”

Section: Introductionmentioning

confidence: 99%

Polydimethylsiloxane/postmodified MIL‐53 composite layer coated on asymmetric hollow fiber membrane for improving gas separation performance

Zhu

Xiao

Wang

et al. 2017

J of Applied Polymer Sci

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Composite layer containing postmodified MIL‐53 (P‐MIL‐53) was exploited to be coated on as‐fabricated asymmetric hollow fiber membrane for improving gas separation performance. The morphology and pore size distribution of P‐MIL‐53 particles were characterized by SEM and N2 adsorption isotherm. The EDX mapping and FTIR spectra were performed to confirm the presence of P‐MIL‐53 deposited on the outer surface of hollow fiber membranes. The results of pure gas permeation measurement indicated that incorporation of P‐MIL‐53 particles in coating layer could improve permeation properties of hollow fiber membranes. By varying coating times and P‐MIL‐53 content, the membrane coated with PDMS/15%P‐MIL‐53 composite by three times achieved best performance. Compared to pure PDMS coated membrane, CO2 permeance was enhanced from 29.96 GPU to 40.24 GPU and ideal selectivity of CO2/N2 and CO2/CH4 also increased from 23.28 and 26.95 to 28.08 and 32.03, respectively. The gas transport through composite membrane was governed by solution‐diffusion mechanism and CO2 preferential adsorption of P‐MIL‐53 contributed to considerable increase of CO2 solubility resulting in accelerated permeation rate. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44999.

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Polyimide hollow fiber membranes for CO2 separation from wet gas mixtures

Cited by 41 publications

References 39 publications

CO2/CH4 separation by means of Matrimid hollow fibre membranes

CO2/CH4 separation by means of Matrimid hollow fibre membranes

An Integrated Membrane Process for Butenes Production

Polydimethylsiloxane/postmodified MIL‐53 composite layer coated on asymmetric hollow fiber membrane for improving gas separation performance

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