Process simulation of an efficient temperature swing adsorption concept for biogas upgrading

Vogtenhuber, Hannes; Hofmann, René; Helminger, Franz; Schöny, Gerhard

doi:10.1016/j.energy.2018.07.193

Cited by 27 publications

(9 citation statements)

References 26 publications

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“…In a typical industrial stream, the pressure of feed gas should be maintained over 10 bar to guarantee enough driving force for CO 2 separation [163]. CO 2 desorption and adsorbent regeneration can be achieved by pressure swing to a lower level or temperature swing to a higher value [228,229]. Temperature swing is more promising for HOB-MP process compared to pressure swing because of the higher CO 2 purity of stripped gas.…”

Section: Carbon Dioxide Capture Technologymentioning

confidence: 99%

From renewable energy to sustainable protein sources: Advancement, challenges, and future roadmaps

Khoshnevisan

et al. 2022

Renewable and Sustainable Energy Reviews

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Section: Carbon Dioxide Capture Technologymentioning

confidence: 99%

From renewable energy to sustainable protein sources: Advancement, challenges, and future roadmaps

Khoshnevisan

et al. 2022

Renewable and Sustainable Energy Reviews

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“…Adsorption technologies have been a promising route for biogas upgrading, and have been commercially deployed due to their low energy demand, low capital investment and operational costs [12][13][14] . Their continuous operation is achieved by three main types of cyclic adsorption processes: pressure swing adsorption (PSA), pressure vacuum swing adsorption (PVSA), and temperature swing adsorption (TSA) [15][16][17][18] . PVSA and TSA units require vacuum and heat for adsorbent regeneration, respectively, while PSA does not require energy for this step 19 .…”

Section: Introductionmentioning

confidence: 99%

Production of negative-emission biomethane by twin double-bed pressure swing adsorption with tail gas sequestration

Golmakani

Nabavi

Manović

2021

Chemical Engineering Journal

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“…Temperature swing adsorption based on a moving bed is often used in the field of flue gas cleaning by CO 2 -capture and shows an acceptable effectiveness [1]. The recently proposed TSA-system [2] by the authors of this work for biogas upgrading uses fluidized bed technology in order to achieve higher heat transfer rates compared to fixed or moving beds [3,4]. The separation process is operating at medium temperatures and atmospheric conditions [2].…”

Section: Introductionmentioning

confidence: 99%

“…The recently proposed TSA-system [2] by the authors of this work for biogas upgrading uses fluidized bed technology in order to achieve higher heat transfer rates compared to fixed or moving beds [3,4]. The separation process is operating at medium temperatures and atmospheric conditions [2]. For excellent process control, it is essential to maintain a certain temperature within the fluidized bed due to the adsorption isotherms and therefore adsorption/desorption activity of the CO 2 on the amine adsorbents.…”

Section: Introductionmentioning

confidence: 99%

“…Hence, in-bed heat exchangers are applied to the fluidized bed TSA-process to avoid deviation from efficient adsorption/desorption temperatures. The resulting heat transfer coefficient (HTC) between the fluidized bed and immersed heat exchangers influences the thermodynamic driving force for separation and moreover, the overall performance and economics of a TSA-process [2]. However, heat transfer between a fluidized bed and an immersed object depends on a number of process-factors [5][6][7][8][9][10][11][12], including particle (i.e., type of Geldart) and gas properties, in-bed object geometry (i.e., heat exchanger layout) and of course fluidization rate.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental and Numerical Investigations on Heat Transfer of Bare Tubes in a Bubbling Fluidized Bed with Respect to Better Heat Integration in Temperature Swing Adsorption Systems

2019

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In this paper experimental and numerical investigations on heat transfer within a bubbling fluidized bed will be presented with respect to better heat integration in continuous temperature swing adsorption (TSA) processes for biogas upgrading. In the literature, mainly heat transfer measurements with glass or sand particles are carried out, thus special reference measurements with adsorbent material in a fluidized bed are missing. Therefore firstly, a series of experiments were carried out in the fluidized bed test facility to obtain heat transfer coefficients between tube surface and bed which were then compared to calculated heat transfer coefficients to determine whether suitable models were available. Horizontal bare tubes with different arrangements (i.e., single tubes and especially tube bundles) are immersed in fluidized amine layered particles with a mean diameter of 650 μ m which are used in the adsorption industry as adsorbent. The test facility enables a cross-current flow of the solids and gas phase as it prevails in a multi-stage fluidized bed reactor for TSA-applications. The heat transfer measurements with different arrangements and adsorbent material show very similar values in the range of 200 W/m 2 K. The mathematical model for single tubes multiplied by a tube diameter factor shows approximate agreement with the experimental results. However, the mathematical models for tube bundles were not able to predict the measured heat transfer coefficients with the required accuracy. Secondly, a computer fluid dynamics (CFD) program was used to perform a numerical investigation of the test facility using the Euler–Euler method in order to describe the required two-phase characteristic of a fluidized bed. The results of the numerical simulation were compared and validated with the experimental results. Bubbling fluidized bed flow regimes could be reproduced well but the heat transfer coefficients between tube and bed were clearly underestimated. However, a numerical study for a bubbling fluidized bed with external circulation, as used in novel continuous TSA systems, could be carried out and thus a tool for better heat integration measures was developed.

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Process simulation of an efficient temperature swing adsorption concept for biogas upgrading

Cited by 27 publications

References 26 publications

From renewable energy to sustainable protein sources: Advancement, challenges, and future roadmaps

From renewable energy to sustainable protein sources: Advancement, challenges, and future roadmaps

Production of negative-emission biomethane by twin double-bed pressure swing adsorption with tail gas sequestration

Experimental and Numerical Investigations on Heat Transfer of Bare Tubes in a Bubbling Fluidized Bed with Respect to Better Heat Integration in Temperature Swing Adsorption Systems

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