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Solar Thermochemical Energy Storage in Elemental Sulphur: Design, Development and Construction of a Lab-scale Sulphuric Acid Splitting Reactor Powered by Hot Ceramic Particles

Thanda, Vamshi Krishna and Thomey, Dennis and Mevißen, Lutz and Noguchi, Hiroki and Agrafiotis, Christos and Roeb, Martin and Sattler, Christian (2020) Solar Thermochemical Energy Storage in Elemental Sulphur: Design, Development and Construction of a Lab-scale Sulphuric Acid Splitting Reactor Powered by Hot Ceramic Particles. SolarPaces International Symposium 2020, 28. Sep - 2. Okt. 2020, online.

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Abstract

A proof of concept sulphuric acid splitting/decomposition prototype driven by hot bauxite particles is designed and developed. The lab-scale test reactor is a novel counter-current flow shell-and-tube heat exchanger with particles on the shell side and sulphuric acid on the tube side with mass flow rates of 10 kg/h and 2 kg/h, respectively. A one-dimensional heat transfer model was developed based on correlations of the flow boiling heat transfer coefficient and particle bed heat transfer coefficient for sizing the shell-and-tube heat exchanger. A detailed study was carried out in order to choose suitable materials especially in the sulphuric acid inlet and evaporation section. A new concept of an electrically heated, continuously operated particle heating system was designed and developed to provide the splitting reactor with hot particles. Different cases were studied using a finite element method (FEM) analysis to qualify the .particle heater and examine its thermo-mechanical stability

Item URL in elib:https://elib.dlr.de/138112/
Document Type:Conference or Workshop Item (Speech)
Title:Solar Thermochemical Energy Storage in Elemental Sulphur: Design, Development and Construction of a Lab-scale Sulphuric Acid Splitting Reactor Powered by Hot Ceramic Particles
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Thanda, Vamshi KrishnaVamshi.Thanda (at) dlr.deUNSPECIFIED
Thomey, DennisDennis.Thomey (at) dlr.dehttps://orcid.org/0000-0001-6936-3350
Mevißen, LutzLutz.Mevissen (at) dlr.deUNSPECIFIED
Noguchi, HirokiJAEAUNSPECIFIED
Agrafiotis, ChristosChristos.Agrafiotis (at) dlr.deUNSPECIFIED
Roeb, MartinMartin.Roeb (at) dlr.deUNSPECIFIED
Sattler, ChristianChristian.Sattler (at) dlr.dehttps://orcid.org/0000-0002-4314-1124
Date:30 September 2020
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:sulfur, thermochemical heat storage, sulfuric acid, heat exchanger, particles
Event Title:SolarPaces International Symposium 2020
Event Location:online
Event Type:international Conference
Event Dates:28. Sep - 2. Okt. 2020
Organizer:SolarPaces
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
Institutes and Institutions:Institute of Solar Research > Solar Chemical Engineering
Deposited By: Roeb, Dr.rer.nat. Martin
Deposited On:23 Dec 2020 14:11
Last Modified:23 Dec 2020 14:11

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