Solar thermal production of zinc and syngas via combined ZnO-reduction and CH4-reforming processes

Steinfeld, Aldo; Frei, A.; Kühn, Peter; Wuillemin, Daniel

doi:10.1016/0360-3199(95)00016-7

Cited by 127 publications

(55 citation statements)

References 13 publications

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“…A significant influence of the above side reactions on the syngas composition begins at elevated temperatures [9]. In addition, the water-gas shift reaction can be considered as another possible exothermic side reaction as follows, Eq.…”

Section: Discussionmentioning

confidence: 99%

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Synthesis Gas and Zinc Production in a Noncatalytic Packed‐Bed Reactor

Ebrahimi¹,

Ebrahim²,

Jamshidi³

et al. 2010

Chem Eng & Technol

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A noncatalytic packed-bed reactor has been constructed for management of the reduction of ZnO by methane, which leads to co-production of synthesis gas and zinc. The reactor consisted of a simple vertical pipe filled with ZnO pellets. These pellets underwent reaction with a pure methane flow. Experimental tests were conducted in the temperature range 860-995°C at atmospheric pressure in an electrically heated reactor. The results showed complete chemical conversion of methane to synthesis gas in the aforementioned temperature range. In addition, analysis of the product solids indicated that the collected solids in the outlet of the reactor were entirely zinc. The maximum methane flow rates (149-744 mL min -1 ) were adjusted to ensure complete chemical conversion of methane. These adjustments were performed for different bed heights at various operating temperatures. Analysis of the product gases revealed high quality synthesis gas production without the influence of methane cracking or other undesired side reactions in the experimental tests. Finally, the governing partial differential equations of the reactor modeling were solved by the finite element method. Consequently, the gaseous profiles along the reactor and the breakthrough curves were predicted and compared with the experimental tests.

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Section: Discussionmentioning

confidence: 99%

“…(4) has been investigated by Steinfeld et al [9]. In addition, the mechanism of the reaction between CH 4 and ZnO to produce syngas has been studied theoretically [10].…”

Section: Introductionmentioning

confidence: 98%

Synthesis Gas and Zinc Production in a Noncatalytic Packed‐Bed Reactor

Ebrahimi¹,

Ebrahim²,

Jamshidi³

et al. 2010

Chem Eng & Technol

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“…At this focal point, the original incident energy is concentrated to thousands of times its original intensity, allowing for very high temperatures to be achieved (> 1000 °C).By implementation of a cavity receiver, these high temperatures can be maintained very efficiently (17)(18). Central receiver solar thermal systems are currently operating to produce electricity commercially in Spain, but the technology remains underdeveloped for application to chemical process systems (18).These researchers found that solar energy could be stored in the products with an efficiency (energy chemically stored divided by energy delivered) nearing 50%, but did not operate above 1200 K; at these temperatures, some higher hydrocarbons were formed (19).…”

Section: Summary and Conclusion:-mentioning

confidence: 99%

Analysis of Solar Steam Gasification of Carbon- Rich Fly Ash to Produce Synthetic Gas.

Surabhi¹

2017

IJAR

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“…However, a direct (or one step) H 2 O decomposition is conceptually a simple method to generate H 2 but is impractical because it requires very high temperatures [1,2]. So, a two-step H 2 O decomposition using a metal oxide at lower temperature has been proposed [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Design of an energy conversion system with decomposition of H ₂ O and CO ₂ using ferrites

Shin

Choi

et al. 2004

phys. stat. sol. (c)

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The energy conversion system was designed in order to reduce the green-house effect and to get energy resources by decomposition of CO 2 and H 2 O. This system is consisted of two parts, one is CO 2 decomposition with the reduced ferrite by H 2 and the other is H 2 O decomposition with reduced ferrite by CH 4 . CH 4 could be synthesized in this system by methanation reaction using carbon, which was deposited on the ferrite surface in the CO 2 decomposition process. Also, CH 4 was used as reducing gas to reduce the ferrite for H 2 O decomposition. H 2 O was decomposed by oxidation of oxygen-deficient ferrite. In this energy conversion system, the reduced Cu-ferrite easily decomposed CO 2 and H 2 O into the useful gases such as CO and H 2 , respectively. Cu-ferrite is a suitable material to apply to this system because it showed excellent redox reactivity on the energy conversions.

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Solar thermal production of zinc and syngas via combined ZnO-reduction and CH4-reforming processes

Cited by 127 publications

References 13 publications

Synthesis Gas and Zinc Production in a Noncatalytic Packed‐Bed Reactor

Synthesis Gas and Zinc Production in a Noncatalytic Packed‐Bed Reactor

Analysis of Solar Steam Gasification of Carbon- Rich Fly Ash to Produce Synthetic Gas.

Design of an energy conversion system with decomposition of H ₂ O and CO ₂ using ferrites

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Solar thermal production of zinc and syngas via combined ZnO-reduction and CH4-reforming processes

Cited by 127 publications

References 13 publications

Synthesis Gas and Zinc Production in a Noncatalytic Packed‐Bed Reactor

Synthesis Gas and Zinc Production in a Noncatalytic Packed‐Bed Reactor

Analysis of Solar Steam Gasification of Carbon- Rich Fly Ash to Produce Synthetic Gas.

Design of an energy conversion system with decomposition of H 2 O and CO 2 using ferrites

Contact Info

Product

Resources

About

Design of an energy conversion system with decomposition of H ₂ O and CO ₂ using ferrites