Investigation of H<sub>2</sub>O and CO<sub>2</sub> Reforming and Partial Oxidation of Methane: Catalytic Effects of Coal Char and Coal Ash

Zhou, Hang; Cao, Yan; Zhao, Houyin; Liu, Hongying; Pan, Wei‐Ping

doi:10.1021/ef700638p

Cited by 26 publications

(12 citation statements)

References 16 publications

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“…Laosiripojana et al studied the doping of CeO 2 on a nickel-based catalyst to improve activity and resistance to carbon formation. Various studies have also proposed combining steam and dry reforming for the mitigation of solid carbon deposition. − These studies focus on the reformer performance and in particular catalyst activity, stability, and reaction mechanisms. This work addresses the broader question of whether a process based on the DR of natural gas can be used to chemically fixate CO 2 (by producing less CO 2 than consumed).…”

Section: Introductionmentioning

confidence: 99%

A Process Integration Approach to the Assessment of CO₂ Fixation through Dry Reforming

Noureldin

Elbashir

Gabriel

et al. 2015

ACS Sustainable Chem. Eng.

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Recently, significant research has been dedicated to the field of mitigating CO 2 emissions. Chemical sequestration (fixation) of CO 2 into value-added products (e.g., methanol, Fischer−Tropsch liquids, propylene) is an emerging option. The fixation of CO 2 via the dry reforming (DR) of natural gas involves the conversion of two greenhouse gases (carbon dioxide and methane) into a useful intermediate (synthesis gas). Synthesis gas can be subsequently converted into various chemicals and fuels. Nevertheless, syngas produced from DR is typically characterized by a H 2 :CO ratio lower than that typically required for conversion into high-value hydrocarbons. In addition, DR catalysts continuously deactivate as a result of extensive coke formation. This paper focuses on quantifying the potential for CO 2 fixation using dry reforming and the integration of different reforming technologies. The results highlight the strong inverse relationship between CO 2 chemical fixation and the required syngas H 2 :CO ratio. Combined reforming involving DR and steam reforming greatly benefits from the presence of waste heat sources because heat generation is the major source of CO 2 generation. A process case study is presented to illustrate the importance of a process viewpoint with respect to DR.

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Section: Introductionmentioning

confidence: 99%

A Process Integration Approach to the Assessment of CO₂ Fixation through Dry Reforming

Noureldin

Elbashir

Gabriel

et al. 2015

ACS Sustainable Chem. Eng.

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“…Incorporating oxygen in the reaction generates heat in situ that could increase energy efficiency; oxygen also reduces or eliminates carbon formation on the reforming catalyst. The tri-reforming can be achieved with natural gas and flue gases using the waste heat in power plants and the heat generated in situ from oxidation with the oxygen that is present in flue gas (Zhou et al, 2008;Zangouei et al, 2010;Moon et al, 2004).…”

Section: Co 2 Reforming Of Ch 4 (Dry Reforming)mentioning

confidence: 99%

CO2 Utilization: A Process Systems Engineering Vision

Araújo¹,

Medeiros²,

Alves³

2014

CO2 Sequestration and Valorization

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Additional information is available at the end of the chapter http://dx.doi.org/10.5772/57560 . IntroductionThe development of economies results in increased energy consumptions, as observed in Figure . In the coming decades, the supply of such expanding demand will remain based on fossil fuels technologies. Expanding the share of renewable energy e.g., biofuels in the case of transportation fuels would require massive investments in creating a new infrastructure, which would eventually raise the standards to a new economic order entirely based on renewables in the near future. On the other hand, the current scenario involves the announcement of large proven reserves of non-conventional gas and oil and expansion of installed infrastructure of production and refining. Fossil fuel based energy is recognized as carbon emitter. The challenge of the century is thus to expand energy supply in a carbon-constrained economy. "ccording to the World Economic Forum King, , no truly low-carbon technology will be able to penetrate the mass market in the short term. The use of installed fossil processing infrastructure, with co-processing of biomass and fossil feedstock and capturing and utilization of emitted CO is the escape route for a moderate transition from the present to a long-term sustainable future. In this context, putting a price on carbon will gradually build the road to a greener tomorrow. Meanwhile, bio-based products are a realistic supplement to fossil-based products, but they cannot mitigate the rising demand for fossil fuels."ccording to an IE" Technology Roadmap, the manufacture of only chemicals account for % of the energy demand in the chemical industry and % of its greenhouse gas GHG emissions. The study concludes that, in the short to medium term to , steady progress in implementing incremental improvements and deploying best practice technologies "PT could provide substantial energy savings and emissions reductions compared to business as usual . " step change in the sector s energy consumption and GHG emissions would require the development of game changer technologies, such as sustainable biomass feedstocks and hydrogen from renewable energy sources which have not yet reached commercial maturity. IE", With this prospect, CO utilization in the short term should allow parallel production routes based on "PT, driven by emission-capture-utilization synergies. In this sense, production and conversion of synthesis gas SYNG"S exhibits the highest potential for medium term of commercial success. Nevertheless, it is worth noting that, while the utilization of CO has potential to reduce greenhouse gas emissions into the atmosphere, CO has disadvantages as a chemical reactant due to its relative significant chemical inertness. This inertness is the underlying reason why CO has broad industrial application as solvent supercritical CO , as fire and pest extinguisher, and as a non-toxic amusement additive in the food industry. From the standpoint of building a low-carbon economy, each potential use of CO as reacta...

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“…Most previous researches on the reforming routes have been focusing on the improvement of methane conversion in aspects such as the reactor design, reaction kinetics or catalyst selection . There has been seldom report on the sustainability assessment of the reforming routes in economic, environmental, and societal aspects.…”

Section: Introductionmentioning

confidence: 99%

“…11 Most previous researches on the reforming routes have been focusing on the improvement of methane conversion in aspects such as the reactor design, 12,13 reaction kinetics 14,15 or catalyst selection. [16][17][18] There has been seldom report on the sustainability assessment of the reforming routes in economic, environmental, and societal aspects. However, sustainable manufacturing is gaining vast attention since 2010 due to the growth of population and corresponding resource constraints, 19 and there is an increasing demand for decision makers to select the most sustainable processes at the early design stage in order to avoid future process retrofitting incurring additional costs and effort.…”

Section: Introductionmentioning

confidence: 99%

Sustainability assessment of combined steam and dry reforming versus tri‐reforming of methane for syngas production

Chen

Gangadharan

Lou

2018

Asia-Pacific J Chem Eng

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Synthesis gas (syngas) is a versatile intermediate in the production of valuable chemicals and fuel, such as methanol, dimethyl ether, ethylene, propylene, and the Fischer–Tropsch fuel. Combining steam reforming and dry reforming (SR + DR) routes can produce syngas with a suitable H2:CO molar ratio (around 2:1) for Fischer–Tropsch synthesis. The newly proposed tri‐reforming (TR) route at experimental scale was a capable alternative to produce syngas in a single reformer with potential benefits such as energy savings and waste flue gas utilization. In this paper, sustainability assessment of SR + DR and TR routes adopting quantifiable indices in economic, environmental, and safety dimensions at industrial scale is performed based on process simulation models. Results show that TR route outperforms SR + DR route in all 3 dimensions. Sensitivity analysis of natural gas price fluctuation does not alter the conclusion. A sustainable root cause analysis is also applied on the SR + DR which identifies root causes affecting its sustainability with the aid of visualization tools such as Pareto chart and fish bone diagram.

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Investigation of H₂O and CO₂ Reforming and Partial Oxidation of Methane: Catalytic Effects of Coal Char and Coal Ash

Cited by 26 publications

References 16 publications

A Process Integration Approach to the Assessment of CO₂ Fixation through Dry Reforming

A Process Integration Approach to the Assessment of CO₂ Fixation through Dry Reforming

CO2 Utilization: A Process Systems Engineering Vision

Sustainability assessment of combined steam and dry reforming versus tri‐reforming of methane for syngas production

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Investigation of H2O and CO2 Reforming and Partial Oxidation of Methane: Catalytic Effects of Coal Char and Coal Ash

Cited by 26 publications

References 16 publications

A Process Integration Approach to the Assessment of CO2 Fixation through Dry Reforming

A Process Integration Approach to the Assessment of CO2 Fixation through Dry Reforming

CO2 Utilization: A Process Systems Engineering Vision

Sustainability assessment of combined steam and dry reforming versus tri‐reforming of methane for syngas production

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Investigation of H₂O and CO₂ Reforming and Partial Oxidation of Methane: Catalytic Effects of Coal Char and Coal Ash

A Process Integration Approach to the Assessment of CO₂ Fixation through Dry Reforming

A Process Integration Approach to the Assessment of CO₂ Fixation through Dry Reforming