Process simulation and optimal design of membrane separation system for CO2 capture from natural gas

Ahmad, Faizan; Lau, Kok Keong; Shariff, Azmi Mohd; Murshid, Ghulam

doi:10.1016/j.compchemeng.2011.08.002

Cited by 127 publications

(67 citation statements)

References 38 publications

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“…The authors used sodium hydroxide (Across), sodium aluminate (Sigma Aldrich) and MWCNT (multiwall carbon nanotubes) from CNT Co. Ltd. (Incheon, Korea). The gases CO 2 , CH 4 and helium were obtained from Linde Group at purities of 99.999%.…”

Section: Methodsmentioning

confidence: 99%

“…The equilibrium time was 7 min Table 1 Parameters for adjusted equations. for CO 2 and 3 min for CH 4 . The relatively fast adsorption of CH 4 on the ZCNT reflected the existence of easier accessibility of adsorption sites on the adsorbent, probably due to low polarity of CNT that interacts more with CH 4 than CO 2 .…”

Section: Figurementioning

confidence: 99%

“…CO 2 separation from natural gas is an important concern in the chemical industry because it reduces the energy content of natural gas, and in the presence of water vapor, it becomes corrosive to equipment and pipelines [2]. The most commonly used techniques for CO 2 capture and separation from fuel gases include ammonium absorption [2], dual-alkali absorption [3], membrane separation [4], and solid adsorbents [5].…”

Section: Introductionmentioning

confidence: 99%

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Unprecedented Low-Cost Hybrid Material for CO2 and CH4 Separation

Moisés¹,

Meneguin²,

Silva³

et al. 2015

JCCE

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Abstract:The zeolite synthesis using waste as silicon source is a promising low-cost process. Sugarcane bagasse ash is a hazardous solid waste generated in large amounts in the sugar industry. Thus, development of new procedures for its productive reuse is relevant. Therefore, this waste was used to prepare a new ZCNT (zeolite/carbon nanotube material). In this work, ZCNT was applied in a CO 2 /CH 4 separation. The adsorption took place at 303 K under pressure of 0.1 until 20 bar and the data were fitted by Langmuir, Toth and Freundlich equations. The adsorbed amount at 20 bar found was 4.7 mmol of CO 2 /g and 4.1 mmol of CH 4 /g; at 3 bar the adsorbed amount was 4.1 mmol of CO 2 /g and 1.2 mmol of CH 4 /g. This result indicates that ZCNT has potential application in CO 2 /CH 4 separation at low pressures.

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Section: Methodsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Unprecedented Low-Cost Hybrid Material for CO2 and CH4 Separation

Moisés¹,

Meneguin²,

Silva³

et al. 2015

JCCE

View full text Add to dashboard Cite

show abstract

“…(7) and (8). The absolute minimum pressure ratio is obtained when the recycle ratio goes to infinity to give the following simple form (Eq.…”

Section: Mathematical Modelsmentioning

confidence: 99%

“…In real cases, these two parameters are often limited by many factors, including material properties, equipment limitations and economic feasibility. One solution to overcome these limitations is to use multiple membrane separation stages [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Attainability and minimum energy of multiple-stage cascade membrane systems

Alshehri

Lai

2015

Journal of Membrane Science

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Cite this article as: Ali Alshehri and Zhiping Lai, Attainability and minimum energy of multiple-stage cascade membrane Systems, Journal of Membrane Science, http://dx.doi.org/10.1016/j.memsci. 2015.08.020 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. ABSTRACTProcess design and simulation of multi-stage membrane systems have been widely studied in many gas separation systems. However, general guidelines have not been developed yet for the attainability and the minimum energy consumption of a multi-stage membrane system. Such information is important for conceptual process design and thus it is the topic of this work. Using a well-mixed membrane model, it was determined that the attainability curve of multi-stage systems is defined by the pressure ratio and membrane selectivity. Using the constant recycle ratio scheme, the recycle ratio can shift the attainability behavior between single-stage and multistage membrane systems. When the recycle ratio is zero, all of the multi-stage membrane processes will decay to a single-stage membrane process. When the recycle ratio approaches infinity, the required selectivity and pressure ratio reach their absolute minimum values, which have a simple relationship with that of a single-stage membrane process, as follows:, where n is the number of stages. The minimum energy consumption of a multi-stage membrane process is primarily determined by the membrane selectivity and recycle ratio. A low recycle ratio can significantly reduce the required membrane selectivity without substantial energy penalty. The energy envelope curve can provide a guideline from an energy perspective to determine the minimum required membrane selectivity in membrane process designs to compete with conventional separation processes, such as distillation.

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Polymeric Membranes for Gas and Vapor Separations

Hosseini

Najari

2016

Nanostructured Polymer Membranes

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Process simulation and optimal design of membrane separation system for CO2 capture from natural gas

Cited by 127 publications

References 38 publications

Unprecedented Low-Cost Hybrid Material for CO2 and CH4 Separation

Unprecedented Low-Cost Hybrid Material for CO2 and CH4 Separation

Attainability and minimum energy of multiple-stage cascade membrane systems

Polymeric Membranes for Gas and Vapor Separations

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