Effect of low pressure on catalytic methanization using nickel catalyst

An increasing concentration of carbon dioxide in the atmosphere is the driving force of on its utilization in different technological processes. Those processes are CCS (Carbon, Capture and Storage) and in particular in CCU (Carbon, Capture and Utilization). One of the promising CCU processes is the catalytic methanation of carbon dioxide and hydrogen. The catalytic methanation utilizes hydrogen, which can be produced using sustainable renewable energy (wind or solar) with unsteady power production. The main product of the catalytic methanation is a synthetic natural gas, consisting mainly of methane. The synthetic natural gas can be used as a substitute for natural gas in energetic applications. This paper presents results from testing of nickel catalyst (Ni/γ-Al2O3) with a variable mass fraction of nickel. Methanation reaction was tested at temperatures below 450 °C and gauge pressure of 0.5 MPa in a through-flow reactor, with a stoichiometric mixture of hydrogen and carbon dioxide. During experiments, catalytic activity, methane selectivity, hydrogen and carbon dioxide conversion were measured.

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Air quality, health, and climate implications of China’s synthetic natural gas development

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.1703167114 ◽

2017 ◽

Vol 114 (19) ◽

pp. 4887-4892 ◽

Cited By ~ 46

Author(s):

Yue Qin ◽

Fabian Wagner ◽

Noah Scovronick ◽

Wei Peng ◽

Junnan Yang ◽

...

Keyword(s):

Air Pollution ◽

Air Quality ◽

Natural Gas ◽

Carbon Capture ◽

Carbon Capture And Storage ◽

Climate Impacts ◽

Air Pollutant ◽

Chinese Government ◽

Synthetic Natural Gas ◽

Residential Sector

Facing severe air pollution and growing dependence on natural gas imports, the Chinese government plans to increase coal-based synthetic natural gas (SNG) production. Although displacement of coal with SNG benefits air quality, it increases CO2 emissions. Due to variations in air pollutant and CO2 emission factors and energy efficiencies across sectors, coal replacement with SNG results in varying degrees of air quality benefits and climate penalties. We estimate air quality, human health, and climate impacts of SNG substitution strategies in 2020. Using all production of SNG in the residential sector results in an annual decrease of ∼32,000 (20,000 to 41,000) outdoor-air-pollution-associated premature deaths, with ranges determined by the low and high estimates of the health risks. If changes in indoor/household air pollution were also included, the decrease would be far larger. SNG deployment in the residential sector results in nearly 10 and 60 times greater reduction in premature mortality than if it is deployed in the industrial or power sectors, respectively. Due to inefficiencies in current household coal use, utilization of SNG in the residential sector results in only 20 to 30% of the carbon penalty compared with using it in the industrial or power sectors. Even if carbon capture and storage is used in SNG production with today’s technology, SNG emits 22 to 40% more CO2 than the same amount of conventional gas. Among the SNG deployment strategies we evaluate, allocating currently planned SNG to households provides the largest air quality and health benefits with the smallest carbon penalties.

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Hydrogenation of CO2 to synthetic natural gas over supported nickel catalyst: effect of support on methane selectivity

Research on Chemical Intermediates ◽

10.1007/s11164-016-2804-4 ◽

2016 ◽

Vol 43 (5) ◽

pp. 2931-2943 ◽

Cited By ~ 4

Author(s):

Janardhan L. Hodala ◽

Jae-Sun Jung ◽

Eun-Hyeok Yang ◽

Gi Hoon Hong ◽

Young Su Noh ◽

...

Keyword(s):

Natural Gas ◽

Nickel Catalyst ◽

Supported Nickel Catalyst ◽

Synthetic Natural Gas ◽

Hydrogenation Of Co2 ◽

Methane Selectivity ◽

Effect Of Support ◽

Catalyst Effect

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Modeling and economic evaluation of carbon capture and storage technologies integrated into synthetic natural gas and power-to-gas plants

Applied Energy ◽

10.1016/j.apenergy.2020.114590 ◽

2020 ◽

Vol 263 ◽

pp. 114590 ◽

Cited By ~ 11

Author(s):

Claudia Bassano ◽

Paolo Deiana ◽

Giorgio Vilardi ◽

Nicola Verdone

Keyword(s):

Economic Evaluation ◽

Natural Gas ◽

Carbon Capture ◽

Carbon Capture And Storage ◽

Synthetic Natural Gas ◽

Power To Gas ◽

Storage Technologies ◽

And Storage ◽

Gas Plants

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Risks and Safety of CO2 Transport via Pipeline: A Review of Risk Analysis and Modeling Approaches for Accidental Releases

Energies ◽

10.3390/en14154601 ◽

2021 ◽

Vol 14 (15) ◽

pp. 4601

Author(s):

Matteo Vitali ◽

Cristina Zuliani ◽

Francesco Corvaro ◽

Barbara Marchetti ◽

Alessandro Terenzi ◽

...

Keyword(s):

Carbon Dioxide ◽

Natural Gas ◽

Carbon Capture ◽

Large Scale ◽

Carbon Capture And Storage ◽

Cfd Modeling ◽

Dispersion Modeling ◽

Extensive Literature ◽

Research Activities ◽

And Storage

Carbon capture and storage is considered an effective mitigation strategy to reduce the most challenging emissions from heavy industries and gas processing. The safe transport of carbon dioxide via pipelines is an important aspect for developing large-scale Carbon Capture and Storage projects. Dispersion modeling for heavy gas such as carbon dioxide is considerably different from natural gas. The set up for modeling simulations is more challenging than conventional natural gas pipeline for several reasons, such as the differences in thermodynamics that must be considered. Moreover, when the carbon dioxide is transported in dense or liquid phase, the rapid phase changing, and possible consequent formation of solids should be considered. Finally, the equation of state required for accurate prediction of parameters is generally different than the ones applicable for natural gas. The main scope of this comprehensive review is to identify the most important parameters, critical events, suitable models, and identification of dispersion modeling issues. An extensive literature review of experiments conducted in the last ten years has been developed, experimental data, integral and simplified model, as well as CFD modeling issues has been identified and reported in the work proposed to highlight the advances and the gaps that could need further research activities.

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Mineral carbonation process of carbon dioxide using animal bone

Science Progress ◽

10.1177/00368504211019644 ◽

2021 ◽

Vol 104 (2) ◽

pp. 003685042110196

Author(s):

Brendon Mpofu ◽

Hembe E Mukaya ◽

Diakanua B Nkazi

Keyword(s):

Carbon Dioxide ◽

Carbon Capture ◽

Carbon Capture And Storage ◽

Economic Feasibility ◽

Mineral Carbonation ◽

Agitation Rate ◽

Carbonation Reaction ◽

Carbonation Process ◽

The Cost ◽

Cow Bone

Carbon dioxide has been identified as one of the greenhouse gases responsible for global warming. Several carbon capture and storage technologies have been developed to mitigate the large quantities of carbon dioxide released into the atmosphere, but these are quite expensive and not easy to implement. Thus, this research analyses the technical and economic feasibility of using calcium leached from cow bone to capture and store carbon dioxide through the mineral carbonation process. The capturing process of carbon dioxide was successful using the proposed technique of leaching calcium from cow shinbone (the tibia) in the presence of HCl by reacting the calcium solution with gaseous carbon dioxide. AAS and XRF analysis were used to determine the concentration of calcium in leached solutions and the composition of calcium in cow bone respectively. The best leaching conditions were found to be 4 mole/L HCl and leaching time of 6 h. Under these conditions, a leaching efficiency of 91% and a calcium conversion of 83% in the carbonation reaction were obtained. Other factors such as carbonation time, agitation rate, and carbonation reaction temperature had little effect on the yield. A preliminary cost analysis showed that the cost to capture 1 ton of CO2 with the proposed technique is about US$ 268.32, which is in the acceptable range of the capturing process. However, the cost of material used and electricity should be reviewed to reduce the preliminary production cost.

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Adsorption of Carbon Dioxide on Monoethanolamine (MEA)–Impregnated Kenaf Core Fiber by Pressure Swing Adsorption System (PSA)

Jurnal Teknologi ◽

10.11113/jt.v68.3023 ◽

2014 ◽

Vol 68 (5) ◽

Cited By ~ 1

Author(s):

Nabilah Zaini ◽

Khairul Sozana Nor Kamarudin

Keyword(s):

Carbon Dioxide ◽

Carbon Capture ◽

Pressure Swing Adsorption ◽

Co2 Adsorption ◽

Carbon Capture And Storage ◽

Freundlich Isotherm ◽

Industrial Applications ◽

Sem Analysis ◽

Impregnation Method ◽

Pressure Swing

Emission of carbon dioxide (CO2) becomes a major concern in combating issues of global warming. The strategy to reduce the concentration of CO2 could be achieved by executing carbon capture and storage (CCS) technology such as adsorption. This study presents the used of kenaf as a green source for CO2 adsorption material. The modification of MEA on kenaf is a novelty work to enhance the capacity of adsorbent since MEA has been proved to have potential in separating CO2 in industrial applications. In this work, 10 wt % of MEA has been impregnated on kenaf via wet impregnation method. The adsorption of CO2 study was conducted by passing CO2/N2 mixture in a ratio of 30:70 in a Pressure Swing Adsorption (PSA) system with a pressure up to 1.5 bar at ambient temperature. Result obtained via SEM analysis shows that the morphology of kenaf was affected after modification with MEA. However, the presence of MEA on kenaf has improved the CO2 adsorption capacity by 16 %. In addition, the adsorption equilibrium data for kenaf and MEA modified kenaf are well fitted in Freundlich isotherm model at low pressure and well fitted in Langmuir model at higher pressure. This study indicates that the introduction of MEA on kenaf could enhance the CO2 adsorption process.

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Techno-economic feasibility and sustainability of an integrated carbon capture and conversion process to synthetic natural gas

Journal of CO2 Utilization ◽

10.1016/j.jcou.2021.101488 ◽

2021 ◽

Vol 47 ◽

pp. 101488

Author(s):

Remi Chauvy ◽

Damien Verdonck ◽

Lionel Dubois ◽

Diane Thomas ◽

Guy De Weireld

Keyword(s):

Natural Gas ◽

Carbon Capture ◽

Economic Feasibility ◽

Conversion Process ◽

Synthetic Natural Gas

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Numerical Simulation of Microscopic Formation of Carbon Dioxide Hydrate in Two-Phase Flow

10.1115/omae2021-62567 ◽

2021 ◽

Author(s):

Alan Junji Yamaguchi ◽

Kaito Kobayashi ◽

Toru Sato ◽

Takaomi Tobase

Keyword(s):

Carbon Dioxide ◽

Carbon Capture ◽

Two Phase Flow ◽

Pore Space ◽

Carbon Capture And Storage ◽

Hydrate Formation ◽

Field Method ◽

Phase Field Method ◽

Phase Flow ◽

Two Phase

Abstract The global warming is an important environmental concern and the carbon capture and storage (CCS) emerges as a very promising technology. Captured carbon dioxide (CO2) can be stored onshore or offshore in the aquifers. There is, however, a risk that stored CO2 will leak due to natural disasters. One possible solution to this is the natural formation of CO2 hydrates. Gas hydrate has an ice-like structure in which small gas molecules are trapped within cages of water molecules. Hydrate formation occurs under high pressure and low temperature conditions. Its stability under these conditions acts like a cap rock to prevent CO2 leaks. The main objective of this study is to understand how hydrate formation affects the permeability of leaked CO2 flows. The phase field method was used to simulate microscopic hydrate growth within the pore space of sand grains, while the lattice Boltzmann method was used to simulate two-phase flow. The results showed that the hydrate morphology within the pore space changes with the flow, and the permeability is significantly reduced as compared with the case without the flow.

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Study on Dispersion of Carbon Dioxide over the Shrubbery Region

Frontiers in Energy Research ◽

10.3389/fenrg.2021.695224 ◽

2021 ◽

Vol 9 ◽

Author(s):

Wang Huiru ◽

You Zhanping ◽

Mo Fan ◽

Liu Bin ◽

Han Peng

Keyword(s):

Carbon Dioxide ◽

Carbon Capture ◽

Carbon Capture And Storage ◽

Dispersion Pattern ◽

Buried Pipeline ◽

Dynamic Impact ◽

Coverage Area ◽

Computational Fluid Dynamics Cfd ◽

And Storage ◽

Terrain Features

In the carbon capture and storage (CCS) infrastructure, the risk of a high-pressure buried pipeline rupture possibly leads to catastrophic accidents due to the release of tremendous amounts of carbon dioxide (CO2). Therefore, a comprehensive understanding of the effects of CO2 dispersion pattern after release from CCS facilities is essential to allow the appropriate safety precautions to be taken. Due to variations in topography above the pipeline, the pattern of CO2 dispersion tends to be affected by the real terrain features, such as trees and hills. However, in most previous studies, the dynamic impact of trees on the wind field was often approximated to linear treatment or even ignored. In this article, a computational fluid dynamics (CFD) model was proposed to predict CO2 dispersion over shrubbery areas. The shrubs were regarded as a kind of porous media, and the model was validated against the results from experiment. It was found that shrubbery affected the flow field near the ground, enhancing the lateral dispersion of CO2. Compared with that of the shrub-free terrain, the coverage area of the three shrub terrains at 60 s increased by 8.1 times, 6.7 times, and 9.1 times, respectively. The influence of shrub height and porosity on CO2 dispersion is nonlinear. This research provides reliable data for the risk assessment of CCS.

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