dc.contributor.author |
Engelbrecht, AD
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dc.contributor.author |
Everson, RC
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dc.contributor.author |
Neomagus, HWPJ
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dc.contributor.author |
North, Brian C
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dc.date.accessioned |
2010-07-14T14:32:21Z |
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dc.date.available |
2010-07-14T14:32:21Z |
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dc.date.issued |
2010-05 |
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dc.identifier.citation |
Engelbrecht, AD,Everson, RC,Neomagus, HWPJ, and North, BC. 2010. Fluidized bed gasification of selected South African coals. Journal of the Southern African Institute of Mining and Metallurgy, Vol. 110(5), pp 225-230 |
en |
dc.identifier.issn |
0038–223X |
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dc.identifier.uri |
http://hdl.handle.net/10204/4087
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dc.identifier.uri |
http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S2225-62532010000500006
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dc.identifier.uri |
https://www.saimm.co.za/Journal/v110n05p225.pdf
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dc.description |
Copyright: 2010 The Southern African Institute of Mining and Metallurgy. This is a post print version. The definitive version was published in the Journal of of the Southern African Institute of Mining and Metallurgy, Vol. 110(5), pp 225-230 |
en |
dc.description.abstract |
An investigation was undertaken to ascertain the suitability of four selected low grade, South African coals for gasification in a bubbling fluidized bed for production of synthesis gas and for the development of integrated gasification combined cycles (IGCC). This study consisted of the characterization of the coals, laboratory evaluation of intrinsic reactivity, and experimentation with a pilotplant fluidized bed gasifier. Results of the characterization experiments show that the selected coals are high in ash, rich in inertinites, very dense (low porosity), with low caking indices and high ash fusion temperatures. Reactivity measurements with a thermogravimetric analyser (TGA), under reaction rate controlling conditions with carbon dioxide, showed that the reactivity of the coal chars decreases with increase in rank of the coal, as expressed by the vitrinite random reflectance and carbon content of the parent coals. The fixed carbon conversion achieved in the fluidized bed gasifier also correlates well with the rank parameter of the coal, with higher conversions being obtained with the lower rank coals. Thermal shattering and attrition of the coal particles produce significant amounts of fines, which correlate with the grindability indices, and no agglomeration (non-caking) was observed. It is concluded that fluidized bed gasifiers are able to utilize typical low grade, high ash South African coals for synthesis gas production and for inclusion in integrated gasification combined cycles for power generation. |
en |
dc.language.iso |
en |
en |
dc.publisher |
The Southern African Institute of Mining and Metallurgy |
en |
dc.subject |
Coal |
en |
dc.subject |
Gasification |
en |
dc.subject |
Fluidized bed |
en |
dc.subject |
Integrated gasification combined cycles |
en |
dc.subject |
IGCC |
en |
dc.subject |
Thermogravimetric analyser |
en |
dc.subject |
TGA |
en |
dc.title |
Fluidized bed gasification of selected South African coals |
en |
dc.type |
Article |
en |
dc.identifier.apacitation |
Engelbrecht, A., Everson, R., Neomagus, H., & North, B. C. (2010). Fluidized bed gasification of selected South African coals. http://hdl.handle.net/10204/4087 |
en_ZA |
dc.identifier.chicagocitation |
Engelbrecht, AD, RC Everson, HWPJ Neomagus, and Brian C North "Fluidized bed gasification of selected South African coals." (2010) http://hdl.handle.net/10204/4087 |
en_ZA |
dc.identifier.vancouvercitation |
Engelbrecht A, Everson R, Neomagus H, North BC. Fluidized bed gasification of selected South African coals. 2010; http://hdl.handle.net/10204/4087. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Engelbrecht, AD
AU - Everson, RC
AU - Neomagus, HWPJ
AU - North, Brian C
AB - An investigation was undertaken to ascertain the suitability of four selected low grade, South African coals for gasification in a bubbling fluidized bed for production of synthesis gas and for the development of integrated gasification combined cycles (IGCC). This study consisted of the characterization of the coals, laboratory evaluation of intrinsic reactivity, and experimentation with a pilotplant fluidized bed gasifier. Results of the characterization experiments show that the selected coals are high in ash, rich in inertinites, very dense (low porosity), with low caking indices and high ash fusion temperatures. Reactivity measurements with a thermogravimetric analyser (TGA), under reaction rate controlling conditions with carbon dioxide, showed that the reactivity of the coal chars decreases with increase in rank of the coal, as expressed by the vitrinite random reflectance and carbon content of the parent coals. The fixed carbon conversion achieved in the fluidized bed gasifier also correlates well with the rank parameter of the coal, with higher conversions being obtained with the lower rank coals. Thermal shattering and attrition of the coal particles produce significant amounts of fines, which correlate with the grindability indices, and no agglomeration (non-caking) was observed. It is concluded that fluidized bed gasifiers are able to utilize typical low grade, high ash South African coals for synthesis gas production and for inclusion in integrated gasification combined cycles for power generation.
DA - 2010-05
DB - ResearchSpace
DP - CSIR
KW - Coal
KW - Gasification
KW - Fluidized bed
KW - Integrated gasification combined cycles
KW - IGCC
KW - Thermogravimetric analyser
KW - TGA
LK - https://researchspace.csir.co.za
PY - 2010
SM - 0038–223X
T1 - Fluidized bed gasification of selected South African coals
TI - Fluidized bed gasification of selected South African coals
UR - http://hdl.handle.net/10204/4087
ER -
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en_ZA |