Economic Estimation of Various Membranes and Distillation for Propylene and Propane Separation

Amedi, Hamid Reza; Aghajani, Masoud

doi:10.1021/acs.iecr.7b04169

Cited by 39 publications

(16 citation statements)

References 54 publications

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“…In general, energy consumption is about 40% of total energy used in petrochemicals, estimated at about 1014 Btu per year. It also has an investment cost of over $50 million [ 6 ]. For this reason, even minor optimization of the purification process would have a significant impact on the energy savings for processing C 3 H 6 and C 3 H 8 mixtures [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in a Membrane-Based Technique for Propylene/Propane Separation

Guo

Kanezashi

2021

Membranes

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The similar physico-chemical properties of propylene and propane molecules have made the separation process of propylene/propane challenging. Membrane separation techniques show substantial prospects in propylene/propane separation due to their low energy consumption and investment costs, and they have been proposed to replace or to be combined with the conventional cryogenic distillation process. Over the past decade, organosilica membranes have attracted considerable attention due to their significant features, such as their good molecular sieving properties and high hydrothermal stability. In the present review, holistic insight is provided to summarize the recent progress in propylene/propane separation using polymeric, inorganic, and hybrid membranes, and a particular inspection of organosilica membranes is conducted. The importance of the pore subnano-environment of organosilica membranes is highlighted, and future directions and perspectives for propylene/propane separation are also provided.

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Section: Introductionmentioning

confidence: 99%

Recent Progress in a Membrane-Based Technique for Propylene/Propane Separation

Guo

Kanezashi

2021

Membranes

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“…Membrane-based gas separation with small-footprint, low energy consumption and easy operation, 5 was paid more attention for C 3 H 6 /C 3 H 8 separations. [6][7][8][9][10][11][12][13] Many kinds of membranes have been reported for propylene/propane separation, such as polymer, 7,14,15 MOFs, 9,16,17 carbon molecular sieves (CMS), [18][19][20] and facilitated transport membrane. [21][22][23] Nevertheless, polymeric membrane suffers from a well-known trade-off effect between permeability and selectivity, making it difficult to achieve high permeability and selectivity simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Enhanced propylene/propane separation in facilitated transport membranes containing multisilver complex

Cong

Shan

et al. 2021

AIChE Journal

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Facilitated transport membrane containing a zero complex Ag 4 tz 4 and 6FDA-TMPDA was fabricated via a solution-casting method and their separation performance toward C 3 H 6 /C 3 H 8 was investigated. Ag 4 tz 4 complexes were well dispersed in the polymeric matrix owing to the weak hydrogen bond between Ag 4 tz 4 and 6FDA-TMPDA which can efficiently improve their interface compatibility. The reversible π complexation between C 3 H 6 and Ag + facilitates the C 3 H 6 transport in membranes, which is beneficial to achieve high C 3 H 6 /C 3 H 8 permselectivity according to the density functional theory calculation. Remarkably, the best separation performance was achieved by the 10 wt% Ag 4 tz 4 membrane, for which the C 3 H 6 permeability is 22 Barrer and the C 3 H 6 /C 3 H 8 selectivity reaches up to 43, surpassing the Robeson upper bound. In addition, the membranes also exhibit great long-term stability (>120 h). The excellent separation performance together with the long-term stability render the membrane to be an interesting candidate for C 3 H 6 /C 3 H 8 separation.

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“…To separate olefins from paraffin, which have similar molecular properties (e.g., boiling point (bp): C 2 H 6 (−88.5 °C), C 2 H 4 (−102.4 °C), C 3 H 8 (−42.2 °C), and C 3 H 6 (−47.7 °C)), energy-intensive cryogenic distillation at high pressure and low temperature with 150–200 trays has generally been employed [ 15 , 16 ]. Furthermore, these systems must use large compressors and heat exchangers that are expensive to build and to operate, while only being beneficial for producing olefin of high purity [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

A Review on Polymer Precursors of Carbon Molecular Sieve Membranes for Olefin/Paraffin Separation

et al. 2021

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Carbon molecular sieve (CMS) membranes have been developed to replace or support energy-intensive cryogenic distillation for olefin/paraffin separation. Olefin and paraffin have similar molecular properties, but can be separated effectively by a CMS membrane with a rigid, slit-like pore structure. A variety of polymer precursors can give rise to different outcomes in terms of the structure and performance of CMS membranes. Herein, for olefin/paraffin separation, the CMS membranes derived from a number of polymer precursors (such as polyimides, phenolic resin, and polymers of intrinsic microporosity, PIM) are introduced, and olefin/paraffin separation properties of those membranes are summarized. The effects from incorporation of inorganic materials into polymer precursors and from a pyrolysis process on the properties of CMS membranes are also reviewed. Finally, the prospects and future directions of CMS membranes for olefin/paraffin separation and aging issues are discussed.

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Economic Estimation of Various Membranes and Distillation for Propylene and Propane Separation

Cited by 39 publications

References 54 publications

Recent Progress in a Membrane-Based Technique for Propylene/Propane Separation

Recent Progress in a Membrane-Based Technique for Propylene/Propane Separation

Enhanced propylene/propane separation in facilitated transport membranes containing multisilver complex

A Review on Polymer Precursors of Carbon Molecular Sieve Membranes for Olefin/Paraffin Separation

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