Search
CO2 capture using steam ejector condenser under electro hydrodynamic actuator with non-condensable gas and cyclone separator: A numerical study
Abstract
The concept for condensation of steam and CO2 separation in a negative CO2 emission gas power plant involves the utilization of a steam ejector condenser (SEC) for direct-contact condensation of vapor with inert gas (CO2) on a spray of subcooled liquid, integrated with a separator to produce pure CO2. Due to the increasing diffusion resistance and reduced convective heat transfer between the steam and subcooled water phases in the presence of non-condensable gas (CO2), the study utilized an electrohydrodynamic (EHD) actuator to enhance heat transfer rate in the SEC. To optimize CO2 purification, the effect of single, dual and quadruple inlets on separation efficiency was analysed. In the SEC, the Eulerian-Eulerian multiphase model is employed, treating water as the continuous phase and the compressible gas mixture (steam and CO2) as the dispersed phase. The standard k-ε model is chosen to depict the turbulence in the ejector. The separator is transient, turbulent, and threedimensional, using the control volume method. The RSM turbulent model and mixture model are utilized to simulate the turbulent two-phase flow in the gas–liquid separator. The findings indicated that when the mass flux of steam and voltage are increased, the condensation heat transfer coefficient also increases. For a mass flux of steam of 51 ( kg m2 .s ), the condensation heat transfer coefficients were measured to be 0.98, 1.029, 1.08, and 1.134 ( MW m2.K) at electrode voltages of 0, 20, 25, and 30 kV, respectively. In addition, a single-inlet cyclone attains a separation efficiency of 95.1 %, while incorporating two inlets improves the performance to 97.9 %. However, the most remarkable outcome is witnessed in cyclones with four inlets, where an impressive separation efficiency of 99.9 % is achieved.
Citations
-
5
CrossRef
-
0
Web of Science
-
5
Scopus
Authors (3)
-
Jaroslaw Mikielewicz Prof
Cite as
Full text
full text is not available in portal
Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
SEPARATION AND PURIFICATION TECHNOLOGY
no. 329,
ISSN: 1383-5866 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Amiri M., Mikielewicz J., Mikielewicz D.: CO2 capture using steam ejector condenser under electro hydrodynamic actuator with non-condensable gas and cyclone separator: A numerical study// SEPARATION AND PURIFICATION TECHNOLOGY -Vol. 329, (2024), s.125236-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.seppur.2023.125236
- Sources of funding:
- Verified by:
- Gdańsk University of Technology
seen 234 times
Recommended for you
CO2 capture through direct-contact condensation in a spray ejector condenser and T- junction separator
- M. Amiri,
- M. Klugmann,
- J. Mikielewicz
- + 2 authors
Analysis of cyclone separator solutions depending on spray ejector condenser conditions
- M. Amiri,
- P. Ziółkowski,
- J. Mikielewicz
- + 2 authors