CO2 Capture Test for A Moving-bed System Utilizi g Low-temperature Steam

Okumura, Takahiro; Ogino, Tomoyuki; Nishibe, Shohei; Nonaka, Yoshiharu; Shoji, Toshiaki; Higashi, T

doi:10.1016/j.egypro.2014.11.243

Cited by 28 publications

(16 citation statements)

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“…Kawasaki has also developed a moving-bed process known as the KCC process for CO 2 capture . The process comprises an adsorption reactor, a desorption reactor, and an adsorbent dryer as shown in Figure .…”

Section: Reactor Configurationsmentioning

confidence: 99%

“…This option can also ensure efficient use of waste heat that could be available in the host plant, thus further minimizing the energy penalty of CO 2 capture. As for the moving bed, direct heating with steam or CO 2 seems to be the most efficient option due to the low tube-to-bed heat transfer. , …”

Section: Reactor Operation Strategiesmentioning

confidence: 99%

“…A suitable contacting system is a key factor for efficient utilization of each sorbent category, as it affects both the process efficiency, footprint and overall capture costs . In other words, material development should be tightly linked to the reactor configuration and regeneration mode. , To this end, different types of reactors were applied to adsorption-based CO 2 capture, including fixed, , rotating, moving, − and fluidized beds. , Substantial research has been conducted on the fixed bed configuration, due to the simplicity of its basic design, testing hundreds of sorbents under different regeneration modes, ,, but the interest to the other reactor configurations has steadily grown in recent years. − …”

Section: Introductionmentioning

confidence: 99%

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Review on Reactor Configurations for Adsorption-Based CO₂ Capture

Dhoke

Zaabout

Cloete

et al. 2021

Ind. Eng. Chem. Res.

135

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Adsorption-based CO 2 capture has enjoyed considerable research attention in recent years. Most of the research efforts focused on sorbent development to reduce the energy penalty. However, the use of suitable gas−solid contacting systems is key for extracting the full potential from the sorbent to minimize operating and capital costs and accelerate the commercial deployment of the technology. This paper reviews several reactor configurations that were proposed for adsorptionbased CO 2 capture. The fundamental behavior of adsorption in different gas−solid contactors (fixed, fluidized, moving, or rotating beds) and regeneration under different modes (pressure, temperature, or combined swings) is discussed, highlighting the strengths and limitations of different combinations of gas−solid contactor and regeneration mode. In addition, the estimated energy duties in published studies and current technology readiness level of the different reactor configurations are reported. Other aspects, such as the reactor footprint, the operation strategy, suitability to retrofits, and the ability to operate under flexible loads are also discussed. In terms of future work, the key research need is a standardized techno-economic benchmarking study to calculate CO 2 avoidance costs for different adsorption technologies under standardized assumptions. Qualitatively, each technology presents several strengths and weaknesses that make it impossible to identify a clear optimal solution. Such a standardized quantitative comparison is therefore needed to focus on future technology development efforts.

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Section: Reactor Configurationsmentioning

confidence: 99%

Section: Reactor Operation Strategiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Review on Reactor Configurations for Adsorption-Based CO₂ Capture

Dhoke

Zaabout

Cloete

et al. 2021

Ind. Eng. Chem. Res.

135

View full text Add to dashboard Cite

show abstract

“…Fixed bed was the most studied configuration, , owing to its simplicity, but the associated high pressure drop and high mass and heat transfer resistance reduce its attractiveness for widespread industrial scale deployment. Other configurations such as monolithic, structured, rotating, and moving − beds are attracting increased research attention given their ability to minimize the reported challenges of fixed bed. On the other extreme, the fluidized bed-based configuration alleviates the high mass and heat transfer resistance and the high pressure drop drawbacks of fixed beds.…”

Section: Introductionmentioning

confidence: 99%

Study of the Cost Reductions Achievable from the Novel SARC CO₂ Capture Concept Using a Validated Reactor Model

Dhoke

Cloete

Amini

et al. 2021

Ind. Eng. Chem. Res.

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New process concepts, such as the swing adsorption reactor cluster (SARC) CO2 capture process, are often techno-economically investigated using idealized modeling assumptions. This study quantifies the impact of this practice by updating a previous economic assessment with results from an improved reactor model validated against recently completed SARC lab-scale demonstration experiments. The experimental comparison showed that the assumption of chemical equilibrium was valid, that the previously employed heat transfer coefficient was conservatively low, and that the required reduction of axial mixing could be easily achieved using simple perforated plates in the reactor. However, the assumption of insignificant effects of the hydrostatic pressure gradient needed to be revised. In the economic assessment, the negative effect of the hydrostatic pressure gradient was almost canceled out by deploying the experimentally observed heat transfer coefficients, resulting in a small net increase in CO2 avoidance costs of 2.8–4.8% relative to the unvalidated model. Further reductions in axial mixing via more perforated plates only brought minor benefits, but a shorter reactor enabled by the fast experimentally observed adsorption kinetics had a larger positive effect: halving the reactor height reduced CO2 avoidance costs by 13.3%. A new heat integration scheme feeding vacuum pressure steam raised from several low-grade heat sources to the SARC desorption step resulted in similar gains. When all improvements were combined, the optimal CO2 avoidance cost was 23.7% below the best result from prior works. The main uncertainty that needs to be overcome to realize the great economic potential of the SARC concept is long-term sorbent stability: mechanical stability must be improved substantially and long-term chemical stability under real flue gas conditions must be demonstrated.

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“…For CO 2 capture, the MBTSA process was suggested by Knaebel in 2005 in which hot flue gas was used to indirectly heat the adsorbent during regeneration [5], and recently, researchers at SRI International has reported results from the from the development of MBTSA process development using direct heating with steam during regeneration with carbon-based adsorbents [6]. Also researchers from Kawasaki in Japan published results from a CO2 capture test for moving-bed system, however, lacking information about the process details and adsorbent used [7]. Kim and coworkers showed by modelling how the energy demand of the process can be significantly reduced by heat exchange between the hot adsorbent leaving the desorber with the cold adsorbent entering the desorber [8,9].…”

Section: Introductionmentioning

confidence: 99%

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

2017

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A mathematical model of a continuous moving-bed temperature-swing adsorption (MBTSA) process for post-combustion CO 2 capture in a coal-fired power plant context has been developed. Process simulations have been done using single component isotherms and measured gas diffusion parameters of an activated carbon adsorbent. While a simple process configuration with no gas re-circulation gives quite low capture rate and CO 2 purity, 86% and 65%, respectively, more advanced process configurations where some of the captured gas is recirculated to the incoming flue gas drastically increase both the capture rate and CO 2 purity, the best configuration reaching capture rate of 86% and CO 2 purity of 98%. Further improvements can be achieved by using adsorbents with higher CO 2 /N 2 selectivity and/or higher temperature of the regeneration section.

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CO2 Capture Test for A Moving-bed System Utilizi g Low-temperature Steam

Cited by 28 publications

References 0 publications

Review on Reactor Configurations for Adsorption-Based CO₂ Capture

Review on Reactor Configurations for Adsorption-Based CO₂ Capture

Study of the Cost Reductions Achievable from the Novel SARC CO₂ Capture Concept Using a Validated Reactor Model

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

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CO2 Capture Test for A Moving-bed System Utilizi g Low-temperature Steam

Cited by 28 publications

References 0 publications

Review on Reactor Configurations for Adsorption-Based CO2 Capture

Review on Reactor Configurations for Adsorption-Based CO2 Capture

Study of the Cost Reductions Achievable from the Novel SARC CO2 Capture Concept Using a Validated Reactor Model

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

Contact Info

Product

Resources

About

Review on Reactor Configurations for Adsorption-Based CO₂ Capture

Review on Reactor Configurations for Adsorption-Based CO₂ Capture

Study of the Cost Reductions Achievable from the Novel SARC CO₂ Capture Concept Using a Validated Reactor Model