CO 2 capture in a continuous gas–solid trickle flow reactor

Veneman, Rens; Hilbers, T.J.; Brilman, Wim; Kersten, Sascha R.A.

doi:10.1016/j.cej.2015.12.066

Cited by 32 publications

(45 citation statements)

References 19 publications

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“…The heat capacity of the IER and the N 2 are assumed to be 1.5 and 1.04 kJ/(kg·K). 20 The calculation of the sensible heat does not consider any heat integration. At an increased regeneration temperature, the increment of the sensible energy required for the sorbent is compensated by a reduction in the energy consumed by the purge, since less purge gas is required.…”

Section: Resultsmentioning

confidence: 99%

Stability of a Benzyl Amine Based CO₂ Capture Adsorbent in View of Regeneration Strategies

Delgado

Veneman

et al. 2017

Ind. Eng. Chem. Res.

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In this work, the chemical and thermal stability of a primary amine-functionalized ion-exchange resin (Lewatit VP OC 1065) is studied in view of the potential options of regenerating this sorbent in a CO2 removal application. The adsorbent was treated continuously in the presence of air, different O2/CO2/N2 mixtures, concentrated CO2, and steam, and then the remaining CO2 adsorption capacity was measured. Elemental analysis, BET/BJH analysis, Fourier transform infrared spectroscopy, and thermogravimetric analysis were applied to characterize adsorbent properties. This material was found to be thermally and hydrothermally stable at high temperatures. However, significant oxidative degradation occurred already at moderate temperatures (above 70 °C). Temperatures above 120 °C lead to degradation in concentrated dry CO2. Adding moisture to the concentrated CO2 stream improves the CO2-induced stability. Adsorbent regeneration with nitrogen stripping is studied with various parameters, focusing on minimizing the moles of purge gas required per mole of CO2 desorbed.

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Section: Resultsmentioning

confidence: 99%

Stability of a Benzyl Amine Based CO₂ Capture Adsorbent in View of Regeneration Strategies

Delgado

Veneman

et al. 2017

Ind. Eng. Chem. Res.

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“…This adsorbent was proposed for example by Veneman et al [34] for application in continuous TSA CO 2 capture processes. In several studies, this material was considered as thermally and mechanically stable and showed excellent CO 2 capture properties [29,34,35]. These previous studies assessed the adsorption behavior of CO 2 and H 2 O on Lewatit for the purpose of carbon capture from flue gas.…”

Section: Methodsmentioning

confidence: 99%

“…The material consists of a polystyrene polymer, which is cross-linked with divinylbenzene and functionalized with primary amine groups, through a phthalimide process [33]. This adsorbent was proposed for example by Veneman et al [34] for application in continuous TSA CO 2 capture processes. In several studies, this material was considered as thermally and mechanically stable and showed excellent CO 2 capture properties [29,34,35].…”

Section: Methodsmentioning

confidence: 99%

Assessment of zeolite 13X and Lewatit® VP OC 1065 for application in a continuous temperature swing adsorption process for biogas upgrading

Sonnleitner

Schöny

Hofbauer

2017

Biomass Conv. Bioref.

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Two commercially available CO 2 -adsorbent materials (i.e., zeolite 13X (13X) and Lewatit® VP OC 1065 (Lewatit)) were evaluated for their applicability in a continuous temperature swing adsorption (TSA) process for biogas upgrading. The equilibrium adsorption characteristics of carbon dioxide and methane were determined by fixed bed and TGA tests. While relatively high CO 2 capacities were measured for both materials (3.6 and 2.5 mol kg), neither of them was found to adsorb significant amounts of CH 4 . Lewatit showed to be fully regenerable at 95°C, whereas for 13X, the regeneration was not complete at this temperature. However, 13X showed no degradation up to 190°C, whereas Lewatit started to degrade at 110 and 90°C when exposed to N 2 and air, respectively. Fluidization tests showed that Lewatit provides a high mechanical stability, while on the contrary, the tested 13X showed considerable attrition. An equilibrium adsorption model was fitted to the measured CO 2 adsorption data. The adsorption model was then integrated into an existing simulation tool for the proposed TSA process to roughly estimate the expectable regeneration energy demand for both materials. It was found that depending on the operating conditions, the regeneration energy demand lies between 0.32-0.54 kWh th /m 3 prodgas for 13X and 0.71-1.10 kWh th /m 3 prodgas for Lewatit. Since heat integration measures were not considered in the simulations, it was concluded that the proposed TSA process has a great potential to reduce the overall energy demand for biogas upgrading and that both tested adsorbent materials may be suitable for application in the proposed TSA process.

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“…The RFL process shows a relatively low pressure drop (see Section 3.1) which will be compared to other CO 2 air capture processes in Section 4. In addition to that, the adsorbent is stable over at least one month of operation under air capture conditions [43] as well as during 300 h of testing under the flue gas capture [46]. Additionally, in these RFL process tests, we did not find any reduction in the CO 2 working capacity of the adsorbent (see Figure A7).…”

Section: Performance Of the Fixed-bed Rflmentioning

confidence: 64%

“…This capacity correlates to an amine efficiency of 16%, which is comparable to the other supported amine sorbents measured by other researchers [44,45] at comparable conditions. The sorbent capacity was found to be stable over the duration of the experimental campaign (one month) as well as over 350 adsorption/desorption cycles under the flue gas conditions [43,46]. The adsorption rate for Lewatit in comparison to other supported amine sorbents under CO 2 air capture conditions is discussed in Section 4.…”

Section: Methodsmentioning

confidence: 98%

A Radial Flow Contactor for Ambient Air CO2 Capture

Brilman

2020

Applied Sciences

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Direct air capture (DAC) of CO2 can address CO2 emissions from distributed sources and produce CO2 from air virtually anywhere that it is needed. In this paper, the performance of a new radial flow reactor (RFR) for CO2 adsorption from ambient air is reported. The reactor uses a supported amine sorbent and is operated in a batch mode of operation or semi-continuously, respectively without or with sorbent circulation. The radial flow reactor, containing 2 kg of the adsorbent, is successfully scaled up from the experimental results obtained with a fixed bed reactor using only 1 g of the adsorbent. In the batch operation mode, the sorbent in the annular space of the RFR is regenerated in situ. With sorbent circulation, the RFR is loaded and unloaded batchwise and only used as an adsorber. A sorbent batch loaded with CO2 is transported to and regenerated in an external (fluid bed) regenerator. The RFR unit is characterized by a low contacting energy (0.7–1.5 GJ/ton-CO2) and a relatively short adsorption time (24–43 min) compared to other DAC processes using the same types of sorbents. The contactor concept is ready for further scale-up and continuous application.

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CO 2 capture in a continuous gas–solid trickle flow reactor

Cited by 32 publications

References 19 publications

Stability of a Benzyl Amine Based CO₂ Capture Adsorbent in View of Regeneration Strategies

Stability of a Benzyl Amine Based CO₂ Capture Adsorbent in View of Regeneration Strategies

Assessment of zeolite 13X and Lewatit® VP OC 1065 for application in a continuous temperature swing adsorption process for biogas upgrading

A Radial Flow Contactor for Ambient Air CO2 Capture

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CO 2 capture in a continuous gas–solid trickle flow reactor

Cited by 32 publications

References 19 publications

Stability of a Benzyl Amine Based CO2 Capture Adsorbent in View of Regeneration Strategies

Stability of a Benzyl Amine Based CO2 Capture Adsorbent in View of Regeneration Strategies

Assessment of zeolite 13X and Lewatit® VP OC 1065 for application in a continuous temperature swing adsorption process for biogas upgrading

A Radial Flow Contactor for Ambient Air CO2 Capture

Contact Info

Product

Resources

About

Stability of a Benzyl Amine Based CO₂ Capture Adsorbent in View of Regeneration Strategies

Stability of a Benzyl Amine Based CO₂ Capture Adsorbent in View of Regeneration Strategies