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Assessing the catalytic effect of coal ash constituents on the CO2 gasification rate of high ash, South African coal
(Elsevier, 2011)
The catalytic effect of inorganic species, within the ash, on the CO2 gasification of three South African coals containing similar carbon-structural properties (elemental, structural and petrographical properties) was ...
Dataset on the carbon dioxide, methane and nitrogen high-pressure sorption properties of South African bituminous coals
(Elsevier, 2019)
The dataset presented in this article supplements the result and information published in the report “The carbon dioxide, methane and nitrogen high-pressure sorption properties of South African bituminous coals” (Okolo et ...
Effectivity of phenol during solvent extraction of a South African bituminous coal under mild conditions
(ACS, 2017)
Solvent extraction of a South African bituminous coal was carried out under mild conditions (<400 °C) with a holding time of 20 min and an initial nitrogen (N2) pressure of 6 MPa. Thermal degradation of coal with phenol ...
Tailored surface energy of stainless steel plate coupons to reduce the adhesion of aluminium silicate deposit
(Elsevier, 2016)
Fouling in heat exchangers not only reduces heat transfer performance significantly, but also causes considerable pressure drop, resulting in higher pumping requirements. It would be much more desirable if surfaces which ...
Improved reactivity of large coal particles by K2CO3 addition during steam gasification
(Elsevier, 2013)
In this study, the excess solution impregnation method was used to impregnate large coal particles (5 and
10 mm) with K2CO3, and the effect of the additive on steam gasification reactivity was investigated. A washed
bituminous, ...
Reactivity study of fine discard coal agglomerates
(Elsevier, 2015)
In this laboratory study thermo-gravimetric analyses were conducted to determine the influence of the addition of an alkaline metal catalyst (K2CO3 incorporated into a fine discard coal agglomerate mixture by physical ...
Pore development during gasification of South African inertinite-rich chars evaluated using small angle X-ray scattering
(Elsevier, 2015)
Pore development arising from steam and CO2 gasification of a char, prepared from an inertinite-rich Witbank Seam 4 coal, was investigated using small angle X-ray scattering. The char, ∼75 μm, was gasified to specific ...
A laboratory scale fixed-bed coal conversion reactor. Part 1. Operation, reaction zone identification and industrial representativeness
(Elsevier, 2015)
Fixed bed coal gasification and combustion operations form an important part in the global energy supply, and these processes are characterized by complex interactions which are difficult to study on an industrial scale. ...
Detailed characterization of SA high mineral matter inertinite–rich coals and density fractions and effect on reaction rates with carbon dioxide: macerals, microlithotypes, carbominerites and minerals
(SAIChE, 2013)
An investigation was undertaken to determine the distribution of macerals and
minerals in South African Highveld coal deposits as well as density fractions derived from a
typical deposit. The corresponding effects on ...
Reducing atmosphere ash fusion temperatures of amixture of coal-associated minerals: the effect of inorganic additives and ashing temperature
(Elsevier, 2014)
The influence of the ashing temperature and inorganic additives on the reducing-atmosphere ash fusion temperatures of a mixture of coal-associated minerals was investigated. Different inorganic compounds were added to the ...