Optimum gasification process for coal wastes utilization in Tanzania

Simple item page
dc.contributor.authorMwakipesile, Duncan Andilile Donald
dc.date.accessioned2020-04-13T18:38:50Z
dc.date.available2020-04-13T18:38:50Z
dc.date.issued2016
dc.descriptionAvailable in print form, East Africana Collection, Dr. Wilbert Chagula Library, Class mark (THS EAF TP360.M852)en_US
dc.description.abstractThis thesis focuses on developing an optimum gasification process for eco-friendly utilization of coal wastes. Challenges to the safe utilization of coal wastes are low volumetric energy density, heterogeneous solid fuels, and high ash and trace metals contents which become problematic in direct gasification due to toxic formation. Multi-metal as well as single-metal interactions were investigated to provide an insight of formation of toxic species in a wide range of temperature environments and in-situ mitigation of their pollutions during the gasiļ¬cation process. Emphasis was also placed on the study of the use of inorganic sorbents to adsorb heavy metal emissions from gasified metal contained in coal wastes using computer code, MALT, and compared with experimental results, in which alumino-silicate sorbents such as kaolinite and alumina due to their strong chemical bond with the metals were found to chemically bind airborne metal emissions. The optimal gasification parameters and heat transfer in Fluidized Bed Gasifier (FBG) was modelled using Computational Fluid Dynamics software (CFD-FLUENT) followed by experimental gasification of the fuel in a laboratory-scale test rig model gasifier in order to elucidate the effects of kaolinite on effective chemisorptions of toxic and corrosive trace elements producing syngas consisting mainly of CO, H2 and CH4 at 8500 C. Coal wastes gasification chemistry, process modelling, gasifier design and operation and product gas cleaning were performed in the invented gasifier test facility model.en_US
dc.identifier.citationMwakipesile, D. A. D. (2016) Optimum gasification process for coal wastes utilization in Tanzania,Doctoral dissertation, University of Dar es Salaam, Dar es Salaam.en_US
dc.identifier.urihttp://41.86.178.5:8080/xmlui/handle/123456789/9340
dc.language.isoenen_US
dc.publisherUniversity of Dar es Salaamen_US
dc.subjectSynthesis gasen_US
dc.subjectGas mixing disordersen_US
dc.subjectTanzaniaen_US
dc.titleOptimum gasification process for coal wastes utilization in Tanzaniaen_US
dc.typeThesisen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Mwakipesile, Duncan Andilile Donald.pdf
Size:
133.21 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

PhD Theses