Investigation of the Concepts to Increase the Dew Point Temperature for Thermal Energy Recovery from Flue Gas, Using Aspen®

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Details zur Publikation

Autorinnen und Autoren: Fedorova N, Aziziyanesfahani P, Jovicic V, Zbogar-Rasic A, Khan MJ, Delgado A
Zeitschrift: Energies
Jahr der Veröffentlichung: 2019
Band: 12
ISSN: 1996-1073


Abstract

Thermal energy of flue gases (FG) dissipating from industrial facilities
into the environment, constitute around 20% of the total dissipated
thermal energy. Being part of the FG, water vapour carries thermal
energy out of the system in the form of the latent heat, which can be
recovered by condensation, thus increasing the overall efficiency of an
industrial process. The limiting factor in this case is the low dew
point temperature (usually 40–60 °C) of the water vapour in the FG. The
increase of the dew point temperature can be achieved by increasing the
water content or pressure. Taking these measures as a basis, the
presented work investigated the following concepts for increasing the
dew point temperature: humidification of the flue gas using water,
humidification using steam, compression of the FG and usage of the steam
ejector. Modelling of these concepts was performed using the commercial
software Aspen®. The humidification of the FG using water
resulted in the negligible increase in the dew point (3 °C). Using steam
humidification the temperatures of up to 92 °C were reached, while the
use of steam ejector led to few degrees higher dew point temperatures.
However, both concepts proved to be energy demanding, due to the energy
requirements for the steam generation. The FG compression enabled the
achievement of a 97 °C dew point temperature, being both
energy-efficient and exhibiting the lowest energy cost.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Aziziyanesfahani, Pegah
Lehrstuhl für Chemische Reaktionstechnik
Delgado, Antonio Prof. Dr.-Ing.
Lehrstuhl für Strömungsmechanik
Fedorova, Nataliia
Lehrstuhl für Strömungsmechanik
Jovicic, Vojislav
Lehrstuhl für Strömungsmechanik
Khan, Muhammad Jehanzaib
Lehrstuhl für Strömungsmechanik
Zbogar-Rasic, Ana Dr.-Ing.
Lehrstuhl für Strömungsmechanik


Zitierweisen

APA:
Fedorova, N., Aziziyanesfahani, P., Jovicic, V., Zbogar-Rasic, A., Khan, M.J., & Delgado, A. (2019). Investigation of the Concepts to Increase the Dew Point Temperature for Thermal Energy Recovery from Flue Gas, Using Aspen®. Energies, 12. https://dx.doi.org/10.3390/en12091585

MLA:
Fedorova, Nataliia, et al. "Investigation of the Concepts to Increase the Dew Point Temperature for Thermal Energy Recovery from Flue Gas, Using Aspen®." Energies 12 (2019).

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Zuletzt aktualisiert 2019-23-07 um 07:49