Modelling synthetic methane production for decarbonising public transport buses: A techno-economic assessment of an integrated power-to-gas concept for urban biogas plants

Janke, Leandro; Ruoss, Fabian; Hahn, Alena; Weinrich, Sören; Nordberg, Åke

doi:10.1016/j.enconman.2022.115574

Cited by 13 publications

(3 citation statements)

References 28 publications

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“…The biogas direct methanation, in which biogas and hydrogen react for producing bio-methane, is a process able to produce up to 80% more methane in comparison to conventional biogas upgrading methods [2] by also assuring economic advantages in terms of lower investment and operating costs [3] since the biogas upgrading section is not needed. The attention to this bio-methane production technology is high as confirmed by the more recent technical literature [2], [4], [5]. In this contest the present work aims to study, from technical and economical points of view, "power to bio-methane" (PtBM) plants, by evaluating the optimal sizes of the components that allow to maximize the biomethane production according to the availability of the renewable sources, as well as to minimize the plant costs.…”

Section: Introductionmentioning

confidence: 97%

Power to gas plant for the production of bio-methane: Technoeconomic optimization

Lanni,

Perna,

Minutillo

et al. 2023

E3S Web Conf.

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In this work, a power to bio-methane plant in which the biogas is produced from an anaerobic digester plant and the hydrogen is generated by using an electrolysis unit powered by a renewable plant (photovoltaic or wind-based), is designed and sized. The plant sizing is carried out by applying a techno-economic multi-objective black box optimization approach. A numerical code, built by using the Matlab software package, is used to evaluate components sizes and to assess plant costs. This code is implemented in an optimization workflow developed in the modeFRONTIER environment. This approach allows to identify the optimal size of the plants components with the aim of maximizing the annual bio-methane producibility and minimizing its levelized cost. The results show that for a low-price electricity scenario (45 €/MWh) the minimum levelized cost of bio-methane (LCOBM), equal to 84.6 €/MWh, is obtained adopting the PV-based configuration. On the contrary, considering an high-price scenario (135 €/MWh), the minimum LCOBM is obtained for the Wind-based plant and is equal to 34.9 €/MWh.

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Section: Introductionmentioning

confidence: 97%

Power to gas plant for the production of bio-methane: Technoeconomic optimization

Lanni,

Perna,

Minutillo

et al. 2023

E3S Web Conf.

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“…Experimental studies on fire safety connected with the use of CH 4 /H 2 in buildings were performed in the works [15,24]. The paper [25] shows practical examination of feasibility of the use the mixture for fueling of city bus. Feasibility of hydrogen-methane application in practice is also recognized by some manufacturers of appliances already claiming that their products are ready for conversion to such fuel.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Enriched Hydrocarbons as New Energy Resources – As Studied by Means of Computer Simulations

Wasiak¹,

Orynycz²,

Tucki³

et al. 2022

Adv. Sci. Technol. Res. J.

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During several recent years an increasing interest concerning behavior of various gaseous or liquid hydrocarbons mixtures with neat gaseous hydrogen is observed. The phase equilibria as well as flow properties have been studied and some practical implementations indicated. The main practical idea consists in a possibility to use such mixtures as a replacement for pure hydrocarbons actually used as the energy source. Application of hydrogen enriched mixtures seem to be a temporary solution for gradual decarbonization of energy resources. The advantage of such approach may consist in much smaller requirements for investment in various aspect of infrastructure needed for handling the fuels. The present work is devoted to computer simulation of carbon dioxide emissions for several scenarios based on different compositions of hydrogen mixtures with hydrocarbons. The simulations include estimation of calorific value of the mixture and composition of exhaust gases emitted after its combustion. The simulation, based on s.c. logistic function, evaluates several variants of time dependence of new fuels implementation, and consequently time dependence of changes in composition of emissions to atmosphere. The simulation can be used for choosing the ways of practical implementation management.

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“…The thermochemical CO 2 methanation process carried out via an exothermic Sabatier reaction (Equation ( 1)) is considered a competitive process to produce SNG at an industrial PtG scale [5]. Recently, the integration of this concept into existing decentralised CO 2 carbon stock plants, for example, biogas from municipal solid (e.g., food, wood, and yard) and liquid (e.g., sewage sludge) waste plants, has been explored to recycle biogenic CO 2 and increase renewable CH 4 production [6][7][8] as well as to reduce external energy dependency. However, the most challenging aspect for widespread SNG implementation is its economic competitivity, being more notable in PtG applications on a small scale.…”

Section: Introductionmentioning

confidence: 99%

Design of a Multi-Tubular Catalytic Reactor Assisted by CFD Based on Free-Convection Heat-Management for Decentralised Synthetic Methane Production

Alarcón

Busqué²,

Andreu

et al. 2022

Catalysts

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A simple reactor design for the conversion of CO2 methanation into synthetic methane based on free convection is an interesting option for small-scale, decentralised locations. In this work, we present a heat-management design of a multi-tubular reactor assisted by CFD (Ansys Fluent®) as an interesting tool for scaling-up laboratory reactor designs. The simulation results pointed out that the scale-up of an individual reactive channel (d = 1/4′, H = 300 mm) through a hexagonal-shaped distribution of 23 reactive channels separated by 40 mm allows to obtain a suitable decreasing temperature profile (T = 487–230 °C) for the reaction using natural convection cooling. The resulting heat-management configuration was composed of three zones: (i) preheating of the reactants up to 230 °C, followed by (ii) a free-convection zone (1 m/s air flow) in the first reactor section (0–25 mm) to limit overheating and, thus, catalyst deactivation, followed by (iii) an isolation zone in the main reactor section (25–300 mm) to guarantee a proper reactor temperature and favourable kinetics. The evaluation of the geometry, reactive channel separation, and a simple heat-management strategy by CFD indicated that the implementation of an intensive reactor cooling system could be omitted with natural air circulation.

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Modelling synthetic methane production for decarbonising public transport buses: A techno-economic assessment of an integrated power-to-gas concept for urban biogas plants

Cited by 13 publications

References 28 publications

Power to gas plant for the production of bio-methane: Technoeconomic optimization

Power to gas plant for the production of bio-methane: Technoeconomic optimization

Hydrogen Enriched Hydrocarbons as New Energy Resources – As Studied by Means of Computer Simulations

Design of a Multi-Tubular Catalytic Reactor Assisted by CFD Based on Free-Convection Heat-Management for Decentralised Synthetic Methane Production

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