Methanol synthesis from biogas: A thermodynamic analysis

Vita, Antonio; Italiano, Cristina; Previtali, Daniele; Fabiano, C.; Palella, Alessandra; Freni, F.; Bozzano, Giulia; Pino, L.; Manenti, Flavio

doi:10.1016/j.renene.2017.11.029

Cited by 70 publications

(29 citation statements)

References 61 publications

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“…92% at 140,000 NmL•g −1 •h −1 , due to the decreased contact time between reactants and catalyst. Moreover, negative values of CO 2 conversion were revealed as the result of the competition between DR (Equation (1)), SR (Equation (2)) and WGS reactions [19,33,80]. Indeed, at high steam content (S/CH 4 = 3), CH 4 reacted preferentially with steam due to the more stable nature of CO 2 , leading to a lower contribution of the DR reaction.…”

Section: Evaluation Of External and Internal Mass Transfer Limitationsmentioning

confidence: 99%

Rh/CeO2 Thin Catalytic Layer Deposition on Alumina Foams: Catalytic Performance and Controlling Regimes in Biogas Reforming Processes

et al. 2018

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: The application of ceramic foams as structured catalyst supports is clearly expanding due to faster mass/heat transfer and higher contact efficiency than honeycomb monoliths and, mainly, packed beds. In this paper, alumina open-cell foams (OCFs) with different pore density (20, 30 and 40 ppi) were coated with Rh/CeO2 catalyst via a two steps synthesis method involving: (i) the solution combustion synthesis (SCS) to in-situ deposit the CeO2 carrier and (ii) the wet impregnation (WI) of the Rh active phase. The catalytic coatings were characterized in terms of morphology and adhesion properties by SEM/EDX analysis and ultrasounds test. Permeability and form coefficient were derived from pressure drop data. Catalytic performance was evaluated towards biogas Steam Reforming (SR) and Oxy-Steam Reforming (OSR) processes at atmospheric pressure by varying temperature (800–900 °C) and space velocity (35,000–140,000 NmL·g−1·h−1). Characteristics time analysis and dimensionless numbers were calculated to identify the controlling regime. Stability tests were performed for both SR and OSR over 200 h of time-on-stream (TOS) through consecutive start-up and shut-down cycles. As a result, homogenous, thin and high-resistance catalytic layers were in situ deposited on foam struts. All structured catalysts showed high activity, following the order 20 ppi < 30 ppi ≈ 40 ppi. External interphase (gas-solid) and external diffusion can be improved by reducing the pore diameter of the OCF structures. Anderson criterion revealed the absence of internal heat transfer resistances, as well as Damköhler and Weisz-Prater numbers excluded any internal mass transfer controlling regime, mainly due to thin coating thickness provided by the SCS method. Good stability was observed over 200 h of TOS for both SR and OSR processes.

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Section: Evaluation Of External and Internal Mass Transfer Limitationsmentioning

confidence: 99%

Rh/CeO2 Thin Catalytic Layer Deposition on Alumina Foams: Catalytic Performance and Controlling Regimes in Biogas Reforming Processes

et al. 2018

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“…Furthermore, the gas stream produced by gasification has to be upgraded in order to obtain a clean syngas for catalysis. Although this aspect was not deeply considered in this work, there are several technologies already at the state of the art that can be used for proper gas cleaning [30]. As reported in Table 5, the process proposed in Case 1 is a characterized of CO2 emission as low as about 2 ktCO2eq/y mainly related to the utilization of biomass as feedstock that is assumed to able to absorb about 20 ktCO2eq/y.…”

Section: Discussionmentioning

confidence: 99%

“…Set-up value Electricity (kgCO2eq/MWhe) [29] 600 Biomass feedstock (kgCO2eq/t) [30] -1449 OFMSW (kgCO2eq/t) [31] -1597 Wastewater (kgCO2eq/t) [29] 500 Pure oxygen (kgCO2eq/t) [32] 282 Process water (kgCO2eq/t) [29] 6.5 Pure hydrogen (kgCO2eq/t) [33] 2400…”

Section: Process Itemmentioning

confidence: 99%

Techno-environmental Assessment for a Bio-methanol Integrated Plant Using Anaerobic Digestion Of OFMSW, Carbon Capture and Biomass Gasification

Giuliano¹,

Catizzone²,

Barisano³

et al. 2019

IJES

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Production of energy or chemicals from biomass and several waste substrates appears a concrete strategy for replacing fossil fuels and reducing carbon dioxide emissions in the atmosphere. In particular, methanol from biomass or bio-waste is considered a reliable energy vector and key intermediate for industrial chemistry. Currently, methanol is industrially produced via syngas conversion using natural gas as the main feedstock. Biomethane produced via anaerobic digestion (AD) of Organic Fraction Municipal Solid Wastes (OFMSW) may be used as an alternative to natural gas for production of syngas with optimal composition via commercialized reforming processes. In this work, a technoenvironmental assessment for methanol production from biogas is presented and discussed. In particular, three case studies were assessed to minimize the environmental impact of biomethanol production.

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“…As previously reported, syngas with a H2/CO equals to about 3, suitable for methanol synthesis, may be produced via steam reforming of bio-methane (BM) produced via anaerobic digestion. Nevertheless, both practical and theoretical evidence suggest that a R value as low as 2 may be considered optimal for methanol synthesis [31]. Therefore in this work three different scenarios for bio-methanol production are investigated.…”

Section: Process Description For Methanol Productionmentioning

confidence: 99%

Towards Methanol Economy: A Techno-environmental Assessment for a Bio-methanol OFMSW/Biomass/Carbon Capture-based Integrated Plant

Giuliano¹,

Catizzone²,

Barisano³

et al. 2019

IJHT

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The anaerobic digestion (AD) of organic fraction municipal solid wastes (OFMSW) is a well-known technology for the valorization of wastes with the production of biogas, the latter usually used in power plant. Nevertheless, more and more effort is necessary in order to produce energy and chemicals from renewables as a strategy for replacing fossil fuels and reducing carbon dioxide in the atmosphere. In particular, methanol is considered as a promising energetic vector of the future since it may be produced from renewables and it may be used as a reactant for fuels and chemical production. Currently, methanol is industrially produced via syngas conversion using natural gas as the main feedstock. Biomethane produced in AD unit may be used as an alternative to natural gas for production of syngas that may be used for methanol production. In this work, a techno-environmental assessment for methanol production from biogas is presented and discussed, with focusing on the effect of side-unit, e.g. biomass gasification, carbon dioxide capture and renewable hydrogen production, on the environmental impact. Results show that highest CO2 saving is calculated for the biomass-integrated plant, although more detailed investigations, e.g. cost analysis, need for a proper assessment.

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Methanol synthesis from biogas: A thermodynamic analysis

Cited by 70 publications

References 61 publications

Rh/CeO2 Thin Catalytic Layer Deposition on Alumina Foams: Catalytic Performance and Controlling Regimes in Biogas Reforming Processes

Rh/CeO2 Thin Catalytic Layer Deposition on Alumina Foams: Catalytic Performance and Controlling Regimes in Biogas Reforming Processes

Techno-environmental Assessment for a Bio-methanol Integrated Plant Using Anaerobic Digestion Of OFMSW, Carbon Capture and Biomass Gasification

Towards Methanol Economy: A Techno-environmental Assessment for a Bio-methanol OFMSW/Biomass/Carbon Capture-based Integrated Plant

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