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Product evaluation and reaction modelling for the devolatilization of large coal particles
(North-West University, 2012)
A fundamental understanding of the process of devolatilization requires extensive knowledge of not only the intrinsic properties of the parent coal and its subsequent formed products (tars,
gases and chars), but also its ...
Catalytic steam gasification of large coal particles
(North-West University, 2011)
Catalytic gasification has been studied extensively in order to develop more efficient and economic coal conversion processes. Fundamental studies regarding catalytic gasification have thus far focused on experimentation ...
Single and binary gas transport of H2, CO and CO2 through a NaA-centrifugally casted alumina composite membrane
(North-West University, 2006)
NaA (or Linde Type A: [Na+12 (H20)27]8 [Al12Si12O48]8 -LTA) membranes were
prepared on centrifugally casted alumina supports and tested for its permeation and
separation properties using single gasses and binary mixtures ...
Characterisation and reaction kinetics of high ash chars derived from inertinite-rich coal discards
(North-West University, 2007)
An investigation was undertaken to determine the gasification and combustion characteristics of chars derived from an inertinite-rich coal discard sample with a high ash content. Fundamental knowledge of the reaction rate ...
Sulphur dioxide capture under fluidised bed combustion conditions using dolomite and coal ash as sorbents
(North-West University, 2007)
A study was done to investigate sulphur dioxide capture capacities of South African mined dolomites, limestone and coal ash derived from high inertinite coal. The study was carried out under atmospheric and pressurised ...
The influence of minerals content and petrographic composition on the gasification of inertinite rich high ash coal
(North-West University, 2010)
Coal particles with different densities have different mineral and maceral compositions and this affects the gasification reaction rates, especially in coals with high ash contents. This study involved the characterization ...
The influence of particle size and density on the combustion of Highveld coal
(2011)
Coal from the Highveld seam 4 deposit was studied to determine and understand the influence of density and particle size on the high temperature combustion characteristics. All of the charring, as well as the combustion ...
Gasification and combustion kinetics of typical South African coal chars
(2015)
An investigation was undertaken to compare the kinetics of combustion and gasification reactions of chars prepared from two South African coals in different reaction atmospheres: air, steam, and carbon dioxide. The two ...
The influence of particle size and devolatilisation conditions on the CO2 gasification of Highveld coal
(North-West University, 2011)
The influence of particle size and devolatilisation conditions on the CO2 reactivity of Highveld seam 4 run of mine coal were investigated in a large particle thermo–gravimetric system. Particle sizes of 5 mm, 10 mm, 20 ...
Low-smoke fuel production via low temperature pyrolysis of lump coal
(North-West University (South Africa) , Potchefstroom Campus, 2016)
Coal is used on a large scale in the Kwadela Township, Mpumalanga, South Africa with the means to fulfil the basic energy requirements of low-income households. Energy within the coal is utilised via combustion thereof in ...