Regeneration of CO2 absorbent with membrane contactor via pressure swing

Chan, Zhe Phak; Liu, Lin; Kang, Guodong; Manan, Norfaizah Ab; Cao, Yijun; Wang, Tonghua

doi:10.1016/j.cherd.2021.01.007

Cited by 7 publications

(4 citation statements)

References 32 publications

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“…The CO 2 stripping flux and efficiency were found to increase with liquid temperature, pressure, and initial CO 2 loading, independent of the selected solvent . Chan et al used a polytetrafluoroethylene (PTFE) hollow fiber membrane combined with the high-temperature pressure swing method to remove the permeated CO 2 . It was reported to be the most energy-efficient method, with regeneration energies lower than 1 MJ/kg CO 2 .…”

Section: Process Intensification Technologiesmentioning

confidence: 99%

“…It was reported to be the most energy-efficient method, with regeneration energies lower than 1 MJ/kg CO 2 . The co-current flow of the liquid phase and gas phase in the membrane contactor resulted in an increased regeneration performance, leading to a higher driving force . Moreover, ceramic hollow fiber membrane contactors were found to be applicable for gas–liquid stripping at high temperatures because of their high interfacial area per volume, their high phase separation efficiency, and their excellent chemical and thermal stabilities.…”

Section: Process Intensification Technologiesmentioning

confidence: 99%

“…86 Chan et al used a polytetrafluoroethylene (PTFE) hollow fiber membrane combined with the high-temperature pressure swing method to remove the permeated CO 2 . 94 It was reported to be the most energy-efficient method, with regeneration energies lower than 1 MJ/kg CO 2 . The co-current flow of the liquid phase and gas phase in the membrane contactor resulted in an increased regeneration performance, leading to a higher driving force.…”

Section: Membrane Stripping Technologymentioning

confidence: 99%

“…The co-current flow of the liquid phase and gas phase in the membrane contactor resulted in an increased regeneration performance, leading to a higher driving force. 94 Moreover, ceramic hollow fiber membrane contactors were found to be applicable for gas−liquid stripping at high temperatures because of their high interfacial area per volume, their high phase separation efficiency, and their excellent chemical and thermal stabilities. With increasing liquid flow rate, higher operating temperatures promote molecular diffusion and chemical kinetics, resulting in high mass transfer efficiencies in a membrane contactor.…”

Section: Membrane Stripping Technologymentioning

confidence: 99%

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Process Intensification of CO₂ Desorption

Gecim

Ouyang

Roy

et al. 2022

Ind. Eng. Chem. Res.

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Anthropogenic climate change due to, among other causes, unhindered CO 2 emissions is a major concern worldwide. The postcombustion capture (PCC) process using a solvent, known as chemical absorption, is currently the most effective way to reduce CO 2 emissions from large point sources. However, high capital investment costs when using the conventional packed bed absorber/desorber technology and high energy requirements during solvent regeneration are the primary obstacles for its large-scale implementation. Different process intensification (PI) technologies to desorb CO 2 from the solvent have been introduced to mitigate the energy consumption compared to the conventional packed bed technology. This work reviews different technologies for intensification of CO 2 desorption. In this context, rotating packed beds, microreactors, and membrane contactors have been explored as potential alternatives to intensify the desorption because of their superior mass and heat transfer. Alternative energy sources like ultrasound and microwaves have also been used to improve the desorption performance of conventional equipments. PI can also be realized by using novel solvents with improved desorption kinetics in combination with intensification equipment. Thus in this review, a comprehensive assessment of different existing PI technologies based on regeneration energies and regeneration efficiencies relative to conventional technology is presented. The intensification of mass transfer for the different technologies is compared, and a new parameter, named the regeneration factor, is proposed to evaluate the performance of PI equipment. This study outlines the advances in process intensification of CO 2 desorption technologies to date and presents an overview of the merits and limits of all technologies.

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Section: Process Intensification Technologiesmentioning

confidence: 99%

Section: Process Intensification Technologiesmentioning

confidence: 99%

Section: Membrane Stripping Technologymentioning

confidence: 99%

Section: Membrane Stripping Technologymentioning

confidence: 99%

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Process Intensification of CO₂ Desorption

Gecim

Ouyang

Roy

et al. 2022

Ind. Eng. Chem. Res.

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Study on two‐stage stretching strategy for microstructure improvement of polytetrafluoroethylene hollow fiber membrane

Jia

Zhou

Liu

et al. 2022

J of Applied Polymer Sci

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Polytetrafluoroethylene (PTFE) has excellent chemical resistance, thermal stability as well as hydrophobicity, and is regarded as a good material for membrane fabrication. PTFE hollow fiber membrane is commonly prepared by the paste extrusion–stretching–sintering process, where the stretching temperature is usually fixed in existing reports. In this paper, a new two‐stage stretching method (first at 50°C and then at 200°C) was proposed to optimize the microstructure of PTFE hollow fiber membranes. Meanwhile, the stretching experiments at low‐temperature (50°C) and high‐temperature (200°C) were also conducted for comparison. The chemical composition, surface morphology, surface porosity, overall porosity, maximum pore size, water contact angle, and mechanical property were discussed. Moreover, the ethanol permeation flux and bovine serum albumin (BSA) rejection of PTFE hollow fiber membranes prepared from different stretching manners were tested. The results showed that with the increase of stretching ratio, the porosity, and pore size gradually increased for all three membranes. However, for a specific stretching ratio, the membrane fabricated by two‐stage stretching process exhibited better comprehensive properties in terms of porosity and pore size, that is, higher porosity than the 50°C method and smaller pore size than the 200°C method. As stretching ratio was 2.0, the ethanol permeation flux and BSA rejection was 2467 L/m2 h and 95%, respectively. Overall, the PTFE hollow fiber prepared from “two‐stage” stretching exhibited comparable BSA rejection (both around 95%) and much higher permeation flux (increased by 43.1%) compared to the sample prepared by low‐temperature stretching at 50°C, and meanwhile, comparable permeation flux (decreased by 10.8%) and higher BSA rejection (95% against 81%) compared to the sample prepared by high‐temperature stretching at 200°C. The proposed method provided a good reference for the microstructure improvement of PTFE hollow fiber membrane fabricated by paste extrusion–stretching–sintering technology.

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Hollow fiber membrane contactor for CO2 capture: A review of recent progress on membrane materials, operational challenges, scale-up and economics

Shiravi,

Maleh,

Raisi

et al. 2024

Carbon Capture Science & Technology

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Regeneration of CO2 absorbent with membrane contactor via pressure swing

Cited by 7 publications

References 32 publications

Process Intensification of CO₂ Desorption

Process Intensification of CO₂ Desorption

Study on two‐stage stretching strategy for microstructure improvement of polytetrafluoroethylene hollow fiber membrane

Hollow fiber membrane contactor for CO2 capture: A review of recent progress on membrane materials, operational challenges, scale-up and economics

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Regeneration of CO2 absorbent with membrane contactor via pressure swing

Cited by 7 publications

References 32 publications

Process Intensification of CO2 Desorption

Process Intensification of CO2 Desorption

Study on two‐stage stretching strategy for microstructure improvement of polytetrafluoroethylene hollow fiber membrane

Hollow fiber membrane contactor for CO2 capture: A review of recent progress on membrane materials, operational challenges, scale-up and economics

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Product

Resources

About

Process Intensification of CO₂ Desorption

Process Intensification of CO₂ Desorption