Effect of Gas Recycling on the Performance of a Moving Bed Temperature-Swing (MBTSA) Process for CO2 Capture in a Coal Fired Power Plant Context

Mondino, Giorgia; Grande, Carlos A.; Blom, Richard

doi:10.3390/en10060745

Cited by 18 publications

(13 citation statements)

References 17 publications

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“…It is reported that coal's share of the global primary energy consumption is 28.1% in 2016 [1]. However, the emission of CO 2 generated by coal-fired power plants is one of the most important factors leading to global warming [2][3][4]. In order to reduce the emission of CO 2 , strategies need to be devised.…”

Section: Introductionmentioning

confidence: 99%

Combustion Characteristics of Single Particles from Bituminous Coal and Pine Sawdust in O2/N2, O2/CO2, and O2/H2O Atmospheres

Lei

Cao

et al. 2017

Energies

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Burning fuels in an O 2 /H 2 O atmosphere is regarded as the next generation of oxy-fuel combustion for CO 2 capture and storage (CCS). By combining oxy-fuel combustion and biomass utilization technology, CO 2 emissions could be further reduced. Therefore, this work focuses on investigating the combustion characteristics of single particles from bituminous coal (BC) and pine sawdust (PS) in O 2 /N 2 , O 2 /CO 2 and O 2 /H 2 O atmospheres at different O 2 mole fractions (21%, 30%, and 40%). The experiments were carried out in a drop tube furnace (DTF), and a high-speed camera was used to record the combustion processes of fuel particles. The combustion temperatures were measured by a two-color method. The results reveal that the particles from BC and PS all ignite homogeneously. Replacing N 2 by CO 2 results in a longer ignition delay time and lower combustion temperatures. After substituting H 2 O for N 2 , the ignition delay time is shortened, which is mainly caused by the steam gasification reaction (C + H 2 O → CO + H 2) and steam shift reaction (CO + H 2 O → CO 2 + H 2). In addition, the combustion temperatures are first decreased at low O 2 mole fractions, and then increased at high O 2 mole fractions because the oxidation effect of H 2 O performs a more important role than its volumetric heat capacity and thermal radiation capacity. At the same condition, particles from PS ignite earlier because of their higher reactivity, but the combustion temperatures are lower than those of BC, which is owing to their lower calorific values.

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Section: Introductionmentioning

confidence: 99%

Combustion Characteristics of Single Particles from Bituminous Coal and Pine Sawdust in O2/N2, O2/CO2, and O2/H2O Atmospheres

Lei

Cao

et al. 2017

Energies

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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].…”

Section: Introductionmentioning

confidence: 99%

“…h FB = h pc + h gc + h rad (1) The particle convection describes the conducted heat transfer from the particle to the surface between a thin remaining gas layer. In most gas-solids fluidized beds, the particle convection is predominat [15].…”

Section: Introductionmentioning

confidence: 99%

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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“…At GHGT-13 we presented a simplified assessment of the MBTSA process in the Natural Gas Combined Cycle (NGCC) context (Grande et al, 2017). More recently we have carried out a more comprehensive study of the MBTSA process using the composite model approach in gPROMS software (gPROMS Model Builder Version 5.0) to simultaneously simulate the different sections composing the MBTSA (Mondino et al, 2017). The composite model was used to investigate the application of the MBTSA for CO 2 from a coal fired power plant.…”

Section: Introductionmentioning

confidence: 99%

“…The composite model was used to investigate the application of the MBTSA for CO 2 from a coal fired power plant. Based on the detailed model for the coal case (Mondino et al, 2017), the present work aims to give a more thorough assessment of the performance of an MBTSA process in the NGCC context. For this purpose, the configuration of the system is adapted to the NGCC case study, which differs from the coal fired power plant in terms of flue gas conditions (temperature, pressure, flow rate and composition).…”

Section: Introductionmentioning

confidence: 99%

Moving Bed Temperature Swing Adsorption for CO2 Capture from a Natural Gas Combined Cycle Power Plant

et al. 2019

Self Cite

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The present work considers the utilization of a Moving Bed Temperature Swing Adsorption (MBTSA) process for CO 2 capture as alternative to the commercial absorption-based technologies, in the context of Natural Gas Combined Cycle (NGCC) power plants. A detailed mathematical model consisting of energy, mass and momentum balances was implemented in gPROMS software, in order to investigate the system behavior under different operating conditions and design parameters. Results show that under the simulated process conditions, the system is suitable for capturing CO 2 at high purity and high capture rate. Promising results are obtained also in terms of process energy duty, by performing a preliminary analysis that takes into account the heat required for sorbent regeneration. Furthermore, the effect of implementing the MBTSA process on plant performance was studied, by integrating the capture system with a process model of the reference power plant. A detailed analysis of the energy use associated with the capture process auxiliaries was performed. Finally, the power plant model was used to simulate the same NGCC system coupled with a state-of-the-art absorption process, for a direct comparison between the two capture technologies.

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Effect of Gas Recycling on the Performance of a Moving Bed Temperature-Swing (MBTSA) Process for CO2 Capture in a Coal Fired Power Plant Context

Cited by 18 publications

References 17 publications

Combustion Characteristics of Single Particles from Bituminous Coal and Pine Sawdust in O2/N2, O2/CO2, and O2/H2O Atmospheres

Combustion Characteristics of Single Particles from Bituminous Coal and Pine Sawdust in O2/N2, O2/CO2, and O2/H2O Atmospheres

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

Moving Bed Temperature Swing Adsorption for CO2 Capture from a Natural Gas Combined Cycle Power Plant

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