Computational Analysis of a Fixed Bed Thermal Oxidizer for Solid Wastes Disposal

P.L. Mtui

doi:10.4028/www.scientific.net/AMR.699.326

Paper Titles

Fabrication and Methyl Blue Adsorption Kinetics of α-Fe₂O₃ Nanotubes by Electrospinning
p.302

Structure and Piezoelectric Properties of Aluminum Nitride Thin Films on Quartz Substrates Deposited by Reactive RF-Magnetron Sputtering
p.308

Research on Nitrogen Removal by ANAMMOX Biofilter Process in Different Concentrations
p.314

Antibacterial Activity of Brewer's Spent Grains Peptides to Staphylococcus aureus
p.320

Computational Analysis of a Fixed Bed Thermal Oxidizer for Solid Wastes Disposal
p.326

Evaluation on Antioxidant Activities of Extracts from Chinese Herbs and Application in the Pear Wine Brewing
p.335

Preliminary Study for the Allelopathic Effect of Water Extracts from Solidago canadensis Leaves
p.340

A Novel Methodology that Combined Fast Chromatography and Antioxidant Activities Screening in Baimai Prescription Research
p.349

Recombinant Human Ciliary Neurotrophic Factor Protects MCAO/R Rat Brain against Neuronal Degeneration and Apoptosis by Regulating NOS Expression
p.354

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 699Computational Analysis of a Fixed Bed Thermal...

Computational Analysis of a Fixed Bed Thermal Oxidizer for Solid Wastes Disposal

Abstract:

Combustion control techniques have become a legal requirement to minimize pollution in municipal solid waste incinerators. Typically, incinerator destruction of pollutants is achieved when 2-second gas residence time at 8500 Celsius and about 6% O2 are guaranteed at exit. Performance of a fixed bed (two-stage) thermal oxidizer for solid waste is analyzed numerically using computational fluid dynamics (CFD) technique. The CFD analysis provides three-dimensional view of thermal and gas flow field inside the thermal oxidizer chamber. Localized zones of temperature and species concentration were analyzed and provided critical information for understanding the thermo-chemical processes taking place during incineration leading into design optimization and the operation strategy of the thermal oxidizer. Based on the CFD results, the original design of the thermal oxidizer was modified to optimize the flow characteristics and the residence time in the secondary chamber thereby achieving complete combustion of gases emanating from the lower chamber, hence less emissions of CO.

You might also be interested in these eBooks

Materials Science and Chemical Engineering

View Preview

Info:

Periodical:

Advanced Materials Research (Volume 699)

Pages:

326-334

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.699.326

Citation:

Cite this paper

Online since:

May 2013

Authors:

P.L. Mtui

Keywords:

Chemical Species, Computational Fluid Dynamics (CFD), Numerical Simulation, Thermal Oxidation, Waste Incineration

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] D. Shin, C. Ryu and S. Choi: Air & Waste Manage. Assoc. 1998, 48, 345-351.

Google Scholar

[2] J. E. L. Rogers, A. F. Sarofim, J. B. Howard, G. C. Williams and D. H. Fine: Proceedings of the Fifteenth Symposium (International) on Combustion, Tokyo, Japan, 1974; The Combustion Institute; pp.1137-1148.

DOI: 10.1016/s0082-0784(75)80378-x

Google Scholar

[3] R. Gort and J. J. H. Brouwers: Combust. Flame 2001, 121, 1-13.

Google Scholar

[4] Y. R. Goh, R. G. Siddall, V. Nasserzaheh, R. Zakaria, J. Swithenbank, D. Lawrence, N. Garrod and B. J. Jones: Inst. Energy 1998, 71, 110-118.

Google Scholar

[5] D. Shin and S. Choi: Combust. Flame 2000, 121, 167-180.

Google Scholar

[6] D. Didaspow: Multiphase Flow and Fluidization. Academy Press, Boston (1994)

Google Scholar

[7] L. M. O'Hara: Modeling of an Experimental Updraft Counter-Current Moving Bed Gasifier, PhD Thesis (1987)

Google Scholar

[9] S. Ergun: Fluid Flow through Packed Columns. Chem. Eng. Prog., 48(2):89{94, 1952.

Google Scholar