The synthesis and hydrolysis of zinc nanoparticles are carried out in a tubular reactor. A key component of the reactor is a coaxial jet quench device. Three co-axial and multi-inlet confined jets mix Zn(g), steam and argon to produce and hydrolyze zinc nanoparticles. The performance of the quench device is assessed with computational fluid dynamic modeling and measurements of hydrogen conversion and particle size and composition. Numerical data elucidate the impact of varying jet flow rates on temperature and velocity distributions within the reactor. Experiments produce hydrogen conversions of 61 to 79%. Particle deposition on sections of the reactor surface above 650 K favors hydrolysis. Residence time for in-flight particles is less than one second and these particles are partially hydrolyzed.
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ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences
August 10–14, 2008
Jacksonville, Florida, USA
Conference Sponsors:
- Advanced Energy Systems Division and Solar Energy Division
ISBN:
978-0-7918-4320-8
PROCEEDINGS PAPER
Design of a Quench Device for Synthesis and Hydrolysis of Zn Nanoparticles: Flow Modeling and Experiments
Aiman Alshare,
Aiman Alshare
University of Minnesota, Minneapolis, MN
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Tareq Abu Hamed,
Tareq Abu Hamed
University of Minnesota, Minneapolis, MN
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Marc Bru¨lhart,
Marc Bru¨lhart
University of Minnesota, Minneapolis, MN
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Luke Venstrom,
Luke Venstrom
University of Minnesota, Minneapolis, MN
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Jane H. Davidson
Jane H. Davidson
University of Minnesota, Minneapolis, MN
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Aiman Alshare
University of Minnesota, Minneapolis, MN
Tareq Abu Hamed
University of Minnesota, Minneapolis, MN
Marc Bru¨lhart
University of Minnesota, Minneapolis, MN
Luke Venstrom
University of Minnesota, Minneapolis, MN
Jane H. Davidson
University of Minnesota, Minneapolis, MN
Paper No:
ES2008-54098, pp. 345-353; 9 pages
Published Online:
June 22, 2009
Citation
Alshare, A, Abu Hamed, T, Bru¨lhart, M, Venstrom, L, & Davidson, JH. "Design of a Quench Device for Synthesis and Hydrolysis of Zn Nanoparticles: Flow Modeling and Experiments." Proceedings of the ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences. ASME 2008 2nd International Conference on Energy Sustainability, Volume 2. Jacksonville, Florida, USA. August 10–14, 2008. pp. 345-353. ASME. https://doi.org/10.1115/ES2008-54098
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