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Solar treatment of cohesive particles in a directly irradiated rotary kiln

Moumin, Gkiokchan and Tescari, Stefania and Sundarraj, Pradeepkumar and de Oliveira, Lamark and Roeb, Martin and Sattler, Christian (2019) Solar treatment of cohesive particles in a directly irradiated rotary kiln. Solar Energy, 182, pp. 480-490. Elsevier. doi: 10.1016/j.solener.2019.01.093. ISSN 0038-092X.

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Official URL: https://www.sciencedirect.com/science/article/pii/S0038092X19301057?via%3Dihub


Although the utilization of concentrated solar power (CSP) for electricity production is already at commercial stage, the application to energy intensive industrial processes is still at an early stage. Among these, the cement industry is one of the biggest CO2-emitters and requires temperature levels achievable with concentrated solar radiation. Since fine particles have to be treated in this process, several challenges arise from the implementation of solar energy in such applications. In this work we present the design and experimental assessment of a high temperature solar rotary kiln to perform the calcination of cement raw meal. With input powers of about 14 kW, material flows of 4–12 kg/h were treated and calcination degrees ranged from 24 to 99%. The chemical efficiency was between 8 and 20% while total efficiencies (thermal plus chemical) between 19 and 40% were achieved. The creation of dust, which is a major issue with particles in the µm-range, could be kept under control by applying a suitable suction system at the reactor aperture. The influence of the mass flow rate, residence time and kiln temperatures on the calcination were analysed to identify key points for further improvement.

Item URL in elib:https://elib.dlr.de/131128/
Document Type:Article
Title:Solar treatment of cohesive particles in a directly irradiated rotary kiln
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Moumin, GkiokchanGkiokchan.Moumin (at) dlr.deUNSPECIFIED
Tescari, StefaniaStefania.Tescari (at) dlr.deUNSPECIFIED
Sundarraj, Pradeepkumarsundarraj.pradeepkumar (at) dlr.deUNSPECIFIED
de Oliveira, Lamarklamark.de-oliveira (at) dlr.deUNSPECIFIED
Roeb, MartinMartin.roeb (at) dlr.dehttps://orcid.org/0000-0002-9813-5135
Sattler, ChristianChristian.Sattler (at) dlr.dehttps://orcid.org/0000-0002-4314-1124
Date:28 January 2019
Journal or Publication Title:Solar Energy
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.solener.2019.01.093
Page Range:pp. 480-490
Keywords:Solar rotary kiln; Solar calcination; Cement production; Lime production; Limestone; Cohesive
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: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Solar Chemical Engineering
Deposited By: Sattler, Prof. Dr. Christian
Deposited On:22 Nov 2019 15:46
Last Modified:02 Mar 2020 13:04

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