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Solar energy conversion and storage through sulphur-based thermochemical cycles implemented on centrifugal particle receivers

Agrafiotis, Christos and Thomey, Dennis and Oliveira, Lamark de and Overbeck, Nicolas and Thanda, Vamshi Krishna and Roeb, Martin and Sattler, Christian (2020) Solar energy conversion and storage through sulphur-based thermochemical cycles implemented on centrifugal particle receivers. AIP Conference Proceedings, 2302, p. 170001. American Institute of Physics (AIP). doi: 10.1063/5.0028766. ISSN 0094-243X.

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Official URL: https://aip.scitation.org/doi/abs/10.1063/5.0028766

Abstract

The recently demonstrated potential of centrifugal particle receivers to provide hot particle streams of temperatures above 950°C as heat transfer fluid and solar energy storage material in the form of sensible heat opens new possibilities in performing endothermic chemical reactions that take place below this temperature in solar tower plants. Of particular interest among such reactions is the SO3 splitting/sulphuric acid decomposition scheme, common to all sulphur-based thermochemical cycles. This set of reactions, instead of being implemented on a solar receiver/reactor, can be performed in a reactor/heat exchanger configuration downstream of the solar receiver using the enthalpy of the hot solid particles stream heated in the receiver. Two alternative concepts of performing this reaction are examined and analysed, focusing on the different catalytic reactor configurations to be employed and the long-term characterization of suitable catalytic compositions. Oxide-based catalytic systems in the form of particles, honeycombs and foams have been tested in a lab-scale reactor demonstrating high SO3 conversions at 850°C, 60%, corresponding to 68% of equilibrium value, with less than 15% loss of performance after more than 1000 h on SO3 vapours stream. REFERENCES

Item URL in elib:https://elib.dlr.de/140487/
Document Type:Article
Title:Solar energy conversion and storage through sulphur-based thermochemical cycles implemented on centrifugal particle receivers
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Agrafiotis, ChristosChristos.Agrafiotis (at) dlr.deUNSPECIFIED
Thomey, DennisDennis.Thomey (at) dlr.dehttps://orcid.org/0000-0001-6936-3350
Oliveira, Lamark delamark.de-oliveira (at) dlr.deUNSPECIFIED
Overbeck, NicolasNicolas.Overbeck (at) dlr.deUNSPECIFIED
Thanda, Vamshi KrishnaVamshi.Thanda (at) dlr.deUNSPECIFIED
Roeb, MartinMartin.Roeb (at) dlr.deUNSPECIFIED
Sattler, ChristianChristian.Sattler (at) dlr.dehttps://orcid.org/0000-0002-4314-1124
Date:11 December 2020
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:2302
DOI :10.1063/5.0028766
Page Range:p. 170001
Publisher:American Institute of Physics (AIP)
ISSN:0094-243X
Status:Published
Keywords:solar, sulfur, sulphur, solar receiver, particle, sulphuric acid
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Solar Fuels
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Solar Fuels (old)
Location: Jülich , Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solar Chemical Engineering
Deposited By: Sattler, Prof. Dr. Christian
Deposited On:18 Jan 2021 10:54
Last Modified:19 Jan 2021 04:13

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