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Enrichment of trace elements in bottom ash from coal oxy-combustion: Effect of coal types

Author: Oboirien, BO ; Thulari, V ; North, Brian C Date: Sep 2016 In this study, the enrichment of trace elements in two coals under air and oxy-combustion conditions was studied. Twenty-one trace elements were evaluated. The two coal samples had a different concentration for the 21 trace elements, which ... Read more
Fluidised bed gasification of high-ash South African coals: An experimental and modelling study

Author: Engelbrecht, AS ; North, Brian C ; Oboirien, BO ; Everson, RC ; Neomagus, HWPJ Date: Nov 2011 The gasification of two high-ash coals were studied using a pilot scale fluidised bed gasifier using oxygen enrich air and steam as the gasification agents. The results of the tests show that the fixed carbon conversion and calorific value ... Read more
Fluidised bed gasification of South African coals – experimental results and process integration

Author: Engelbrecht, A ; North, Brian C ; Oboirien, B ; Majozi, T ; Madzivhandila, V Date: Jun 2011 South Africa has abundant resources of high-ash and other low-quality coals. The aim of this work is to investigate the possibility of using fluidised bed gasification technology to convert these coals at a high efficiency into clean fuel gas ... Read more
The hydropyrolysis (dry hydrogenation) of a selection of South Africa

Author: Barrass, G Date: 1978 A method utilising the "hot-rod" reactor has been employed to study the hydropyrolysis characteristics of a selection of South African coals. The effects of various operating parameters involved in this process have been investigated such as ... Read more
Low-temperature carbonisation assay of South African coals in a laboratory scale test apparatus: Part 1 The apparatus and experimental procedure

Author: Meinjes, AA Date: 1976 This report describes the apparatus used to determine the low-temperature carbonisation properties of South Africa. Read more
Performance evaluation of South African coals under oxy-fuel

Author: Mathekga, HI ; Oboirien, BO ; Engelbrecht, A ; North, Brian C ; Premlal, K Date: Jul 2016 In this study, the experimental results of the oxy-fluidized combustion of three different South African coals (sub-bituminous) are presented. The coal samples were denoted Coal A, B, and C. Three combustion atmospheres—air, oxy (21% O(sub2)/79% ... Read more
The practice of coal petrography in South Africa

Author: Moodie, B Date: 1971 This report discusses about the practice of coal petrography in South Africa. Read more
The reduction in ash content of some South African Coals

Author: Vogel, JC Date: 1938 The high capital cost of coal hydrogenation plant makes it essential that oil output be maintained at high level as possible as this factor must primarily govern the choice of the coal to be used or the decision as to whether as coal is ... Read more

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Browsing by Subject "South African coals"

Browsing by Subject "South African coals"

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