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Design of a rotary kiln for a solar-powered air separation process

Krüger, Hanna (2019) Design of a rotary kiln for a solar-powered air separation process. Diploma, TU Dresden.

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The aim of the DüSol project is to find a solar-powered process for the production of chemical fertilizers and demonstrate an air separation process for nitrogen production, that meets the purity requirements for the Haber-Bosch process. The focus of this thesis is developing of a 20 kW rotary kiln for the production of nitrogen from air with a purity of less than 10 ppm residual oxygen concentration. In order to achieve this 2 kg redox material is to react with 7.8% of air at 800°C under gas tight conditions. An existing furnace was adapted for this purpose, though the development of a new steel crucible with a support construction, a novel gas supply and release system as well as a temperature measurement system had to be designed. The reactor, mostly made of standard parts, was assembled and tested using a solar simulator. It was shown that the reactor meets the requirements regarding temperature resistance and gas tightness, but the measurement system still has to be improved.

Item URL in elib:https://elib.dlr.de/131236/
Document Type:Thesis (Diploma)
Title:Design of a rotary kiln for a solar-powered air separation process
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Krüger, HannaHanna.Krueger (at) dlr.deUNSPECIFIED
Date:6 February 2019
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Number of Pages:133
Keywords:Solar, receiver, rotary kiln, air separation, themochemical cycle
Institution:TU Dresden
Department:Institut für Energietechnik
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:25 Nov 2019 15:37
Last Modified:25 Nov 2019 15:37

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