Comparison of intensified reactor systems for one–step conversion of CO2–containing syngas to DME

Koybasi, H. Hasan; Hatipoglu, Ceren; Avcı, Ahmet K.

doi:10.1016/j.cep.2021.108538

Cited by 6 publications

(5 citation statements)

References 48 publications

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“…It was demonstrated that the CO 2 conversion was higher for the microchannel reactor (6.6%) than for the cascade reactor (4.6%), and that the DME yield was also higher for the microchannel reactor (18.8%) than for the cascade reactor (13.8%). Conversely, the operational system was also more voluminous for the microchannel reactor (104.5 L) than the cascade reactor (56.2 L) . Pankhedkar et al investigated chemical looping for the valorization of CO 2 generated from coal burning .…”

Section: Thermochemical Reactionsmentioning

confidence: 99%

“…140 To increase DME yield, Koybasi et al investigated alternative reactor designs for a mixed CO 2 /CO reactant, including a cascade reactor system and a microchannel reactor with reactive and cooling channels. 141 Their results showed that the DME yield was higher for the microchannel reactor, notably due to the continuous cooling of the reactor by the cooling channels distributed within the reactor structure. This elaborate cooling system keeps the operational temperature at optimal values (between 495 and 520 K) for most of the reactor length.…”

Section: Methanol and Dimethyl Ether Productionmentioning

confidence: 99%

“…Conversely, the operational system was also more voluminous for the microchannel reactor (104.5 L) than the cascade reactor (56.2 L). 141 Pankhedkar et al investigated chemical looping for the valorization of CO 2 generated from coal burning. 142 In their plant design, exhaust CO 2 was recycled by being reinjected into the coal gasifier, in which it was converted into syngas alongside the gasified coal.…”

Section: Methanol and Dimethyl Ether Productionmentioning

confidence: 99%

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New Insights on Catalytic Valorization of Carbon Dioxide by Conventional and Intensified Processes

Olivier

Desgagnés

Mercier

et al. 2023

Ind. Eng. Chem. Res.

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Carbon capture is an emerging technology that is often mentioned as a potential solution to the global warming crisis. However, most of the captured carbon is now treated as waste, discarded, and not used in any meaningful way. On the other hand, from a sustainable development point of view, CO 2 valorization could be a very appealing approach that offers an economic potential when this compound is recycled into valuable chemical products. In this regard, this state-of-the-art review encompasses a wide range of different processes to achieve the conversion of CO 2 into a large variety of products. It does not focus solely on a specific reaction or method, but rather brings different aspects together to provide a far more complete portrait of this emerging subject. Several methods and approaches are discussed, namely thermochemical, electrochemical, photochemical, photoelectrochemical, biochemical, and plasma-assisted conversion. The current state of CO 2 valorization, as well as emerging alternatives and stimulating prospects, was examined, while bearing in mind the realities that limit the application of such technologies. Special emphasis was placed on the optimization of reaction conditions and the development of materials that ensure the best possible production of valuable and environmentally friendly compounds from CO 2 . This review also highlights the challenges related to the application of CO 2 valorization at an industrial scale, which are also important in directing further research in this domain and assessing the prospects of these technologies. Due to the growing number of published papers on the subject, and the limited number of papers offering such a large perspective, we thus believe that this review will be a valuable addition to guide all researchers involved in the field of CO 2 valorization, but also for industrial and political leaders interested in investing in and developing these promising new technologies.

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Section: Thermochemical Reactionsmentioning

confidence: 99%

Section: Methanol and Dimethyl Ether Productionmentioning

confidence: 99%

Section: Methanol and Dimethyl Ether Productionmentioning

confidence: 99%

See 1 more Smart Citation

New Insights on Catalytic Valorization of Carbon Dioxide by Conventional and Intensified Processes

Olivier

Desgagnés

Mercier

et al. 2023

Ind. Eng. Chem. Res.

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“…is an environmentally friendly, non-toxic oxygenate with intriguing properties that has a variety of applications. It is considered as a clean transportation fuel because of its high cetane number (55)(56)(57)(58)(59)(60), low boiling point (−25 °C), low ignition temperature and good composition of oxygen content (35 wt. %), which facilitate faster vaporisation and better combustion quality [4].…”

Section: Introductionmentioning

confidence: 99%

Prospect of Direct Dimethyl Ether Production from CO2: Reactor Design Development

Nizam

Razak

Othman

et al. 2023

Mal. J. Fund. Appl. Sci.

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The increasing emissions of carbon dioxide (CO2) and volatile hydrocarbons via burning of fossil fuels result in a significant amount of global warming and air pollution. With the concern over the impact of fossil fuel to the environment, the interest in alternative fuel production from the CO2 generated through utilization of new technologies has risen rapidly. Several clean alternative fuels, including dimethyl ether (DME) have been investigated for a more sustainable and greener environment. DME has a high cetane number but produces much lower NOx emission upon combustion. DME is typically synthesized using syngas based on conventional indirect DME route, where the process begins with conversion of syngas into methanol and subsequently dehydrated to DME in separate units. Recently, a direct single-step route to produce DME through dehydrogenation of CO2 and dehydration of methanol by utilising a novel bifunctional catalyst has been investigated. In direct DME, the dehydrogenation and dehydration occur simultaneously in a single reactor, which eliminate the need for a methanol production plant. However, the use of conventional fixed-bed reactor (FBR) for the direct DME synthesis causes many challenges including catalyst deactivation, where water appears in the reaction area, limiting the conversion of CO2 reactants into DME and consequently, the DME yield. It is also essential to manage the exothermic heat generated from the catalyst for better DME yield. In order to overcome these hurdles, several types of reactors have been proposed such as fluidized bed reactor, slurry reactor, microreactor and catalytic membrane reactor. In this paper, different types of reactors are first discussed and its applications related to the direct DME production from CO2 are highlighted. Finally, the challenges and difficulties of reactor development are addressed and future direction is outlined.

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“…Because hardly no results of a long-term use of this type of device are available in the literature, the question of stability still remains a point of attention. Similarly, other literature works have focused on microreactors for DME synthesis. − Among these works, the recent work of Koybasi and Avci addressed the catalytic synthesis of DME in a membrane microchannel reactor under isothermal conditions. Their results showed that the integration of a steam-selective SOD membrane provides enhanced CO X (CO and CO 2 ) conversion.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Optimization of Mass and Heat Flux Profiles in a Multifunctional Reactor for CO₂ and H₂ Valorization to Dimethyl Ether

Behloul

Commenge

Castel

2022

Ind. Eng. Chem. Res.

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Dimethyl ether is one of the future synthetic fuels in the 2025–2050 energy mix. This work presents a detailed numerical optimization approach for a multifunctional reactor for the direct synthesis of dimethyl ether from CO2 and H2, with a specific focus on the methodological aspect that can be used as a guide to help or evaluate the development of innovative technological strategies. An innovative approach based on the dynamic optimization of the mass and heat flux profiles is applied for the intensified configuration, coupling simultaneously the reaction, heat exchange, and membrane separation (R–E–M). Several degrees of freedom and optimization strategies (mono- and multi-objective/deterministic and stochastic) are addressed. The energetic criterion is evaluated, namely, the total heat power exchanged. Optimization results highlight the performance improvement potentialities offered through the optimal exploitation of the synergy between these elementary functions. Simulation results show that the kinetic inhibition caused by water can be overcome and that a water-free process output is achievable, enabling an economic gain due the removal of a postreaction separation (water/methanol). The heat flux optimization provides more flexibility for mass transfer. Up to 95 and 98% in DME yield and CO2 conversion have been obtained per single pass for optimal theoretical heat- and mass-transfer flux profiles, respectively, within a multifunctional reactor. The results are obtained for the reactor inlet temperature and pressure of 518.15 K and 70 bar, respectively.

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Comparison of intensified reactor systems for one–step conversion of CO2–containing syngas to DME

Cited by 6 publications

References 48 publications

New Insights on Catalytic Valorization of Carbon Dioxide by Conventional and Intensified Processes

New Insights on Catalytic Valorization of Carbon Dioxide by Conventional and Intensified Processes

Prospect of Direct Dimethyl Ether Production from CO2: Reactor Design Development

Modeling and Optimization of Mass and Heat Flux Profiles in a Multifunctional Reactor for CO₂ and H₂ Valorization to Dimethyl Ether

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Comparison of intensified reactor systems for one–step conversion of CO2–containing syngas to DME

Cited by 6 publications

References 48 publications

New Insights on Catalytic Valorization of Carbon Dioxide by Conventional and Intensified Processes

New Insights on Catalytic Valorization of Carbon Dioxide by Conventional and Intensified Processes

Prospect of Direct Dimethyl Ether Production from CO2: Reactor Design Development

Modeling and Optimization of Mass and Heat Flux Profiles in a Multifunctional Reactor for CO2 and H2 Valorization to Dimethyl Ether

Contact Info

Product

Resources

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Modeling and Optimization of Mass and Heat Flux Profiles in a Multifunctional Reactor for CO₂ and H₂ Valorization to Dimethyl Ether