Removal of high concentration CO 2 from natural gas using high pressure membrane contactors

Kang, Guodong; Chan, Zhe Phak; Saleh, Syafiqa Bt M.; Cao, Yijun

doi:10.1016/j.ijggc.2017.03.003

Cited by 42 publications

(15 citation statements)

References 31 publications

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“…Natural gas (NG) is the fastest growing energy source being used nowadays and likely to grow for the next 20 years (Kang et al., 2017). Natural gas, an abundant and cleaner energy source is an alternative to oil and coal (Campos et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Natural gas, an abundant and cleaner energy source is an alternative to oil and coal (Campos et al., 2017). Crude natural gas is mainly composed of methane presenting impurities (CO 2 , H 2 O, H 2 S, etc) that must be removed to ensure process and transport specifications (Kang et al., 2017; Rufford et al., 2012; Song et al., 2017). Carbon dioxide is considered the main greenhouse gas (Jedli et al., 2018).…”

Section: Introductionmentioning

confidence: 99%

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Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Polesso

Bernard

Ferrari

et al. 2019

Heliyon

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Physical immobilization of ionic liquids (ILs) in solid materials appears as an interesting strategy for the development of new sorbents for CO 2 separation from natural gas. In this work the effect of physical immobilization of two ionic liquids with different anions (bmim[Cl] and bmim[OAc]) on two mesoporous supports (commercial silica SBA-15 and silica extracted from rice husk) was evaluated for CO 2 separation from natural gas by experimental determination of CO 2 sorption, CO 2 /CH 4 selectivity and sorption kinetics. Results showed that the pure supports present the greatest CO 2 sorption capacity when compared to immobilized ILs. However, CO 2 removal efficiency improves considerably in the CO 2 /CH 4 mixture when ILs are immobilized in these supports. The best selectivity results were obtained for supports immobilized with the IL bmim[Cl] and values increased for SIL-Cl by 37% and SBA-Cl 51% when compared with their respective supports. The contribution of SIL-Cl (3.03 ± 0.12) to separation performance (CO 2 /CH 4 ) is similar to SBA-Cl (3.29 ± 0.39). ILs supported also presented fast sorption kinetics when compared to pure ILs thus being an interesting alternative in the search for highly efficient and low-cost separation processes.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Polesso

Bernard

Ferrari

et al. 2019

Heliyon

View full text Add to dashboard Cite

show abstract

“…The most well-known process involves aqueous amine solutions 6,7 . Despite being widespread this process presents operational drawbacks (high energy for regeneration stage, degradation byproducts, equipment corrosion) that discourage its use 5,[8][9][10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Imidazolium-based Ionic Liquids Impregnated in Silica and Alumina Supports for CO2 Capture

et al. 2019

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Ionic liquids (ILs) physical immobilization in solid materials is a key strategy for developing efficient and low cost CO 2 capture processes. In this work, two porous commercial substrates with different characteristics (silica and alumina) were impregnated with ILs by physical wet method. Imidazolium based IL combined with [Br]and [Tf 2 N]anions were used in impregnation process. CO 2 sorption capacity and selectivity (CO 2 /N 2) of these materials were investigated. The best results regarding CO 2 /N 2 selectivity and CO 2 sorption were obtained with [Tf 2 N]anion. In relation to solid support, commercial alumina exhibited enhanced CO 2 uptake and higher selective capacity (CO 2 /N 2) (6.1 (± 0.1)). Combination of commercial alumina as support and 20 wt% of mbmim [Tf 2 N] resulted in higher CO 2 /N 2 selectivity of 9.5 ± 1.0. In addition, this material also showed fast sorption kinetics when compared to pure IL besides reuse capacity.

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“…is makes the removal of CO 2 from natural gas necessary [3,4]. For a conventional gas processing, CO 2 is removed in an acid gas removal unit (AGRU) using aqueous solvent absorption processes [5].…”

Section: Introductionmentioning

confidence: 99%

Monitoring of CO₂ Absorption Solvent in Natural Gas Process Using Fourier Transform Near-Infrared Spectrometry

Yusop

Norfadilah

Aishah

et al. 2020

International Journal of Analytical Chemistry

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The analytical methods for the determination of the amine solvent properties do not provide input data for real-time process control and optimization and are labor-intensive, time-consuming, and impractical for studies of dynamic changes in a process. In this study, the potential of nondestructive determination of amine concentration, CO2 loading, and water content in CO2 absorption solvent in the gas processing unit was investigated through Fourier transform near-infrared (FT-NIR) spectroscopy that has the ability to readily carry out multicomponent analysis in association with multivariate analysis methods. The FT-NIR spectra for the solvent were captured and interpreted by using suitable spectra wavenumber regions through multivariate statistical techniques such as partial least square (PLS). The calibration model developed for amine determination had the highest coefficient of determination (R2) of 0.9955 and RMSECV of 0.75%. CO2 calibration model achieved R2 of 0.9902 with RMSECV of 0.25% whereas the water calibration model had R2 of 0.9915 with RMSECV of 1.02%. The statistical evaluation of the validation samples also confirmed that the difference between the actual value and the predicted value from the calibration model was not significantly different and acceptable. Therefore, the amine, CO2, and water models have given a satisfactory result for the concentration determination using the FT-NIR technique. The results of this study indicated that FT-NIR spectroscopy with chemometrics and multivariate technique can be used for the CO2 solvent monitoring to replace the time-consuming and labor-intensive conventional methods.

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Removal of high concentration CO 2 from natural gas using high pressure membrane contactors

Cited by 42 publications

References 31 publications

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Imidazolium-based Ionic Liquids Impregnated in Silica and Alumina Supports for CO2 Capture

Monitoring of CO₂ Absorption Solvent in Natural Gas Process Using Fourier Transform Near-Infrared Spectrometry

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Removal of high concentration CO 2 from natural gas using high pressure membrane contactors

Cited by 42 publications

References 31 publications

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Supported ionic liquids as highly efficient and low-cost material for CO2/CH4 separation process

Imidazolium-based Ionic Liquids Impregnated in Silica and Alumina Supports for CO2 Capture

Monitoring of CO2 Absorption Solvent in Natural Gas Process Using Fourier Transform Near-Infrared Spectrometry

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Monitoring of CO₂ Absorption Solvent in Natural Gas Process Using Fourier Transform Near-Infrared Spectrometry