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An understanding of lump coal physical property behaviour (density and particle size effects) impacting on a commercial-scale Sasol-Lurgi FBDB gasifier
(Elsevier, 2008)
Thermal processes which utilize coarse coal, such as fixed-bed gasification and chain grate stoker boilers, are dependant on a stable particle size for stable operation. During coarse coal utilization, thermal fragmentation ...
Trace element behaviour in the Sasol-Lurgi MK IV FBDB gasifier. Part 1. The volatile elements: Hg, As, Se, Cd and Pb
(Elsevier, 2008)
Coal-fired power and heat production are the largest single source of Hg in the atmosphere, and in March 2005, the US-EPA ruled regarding Hg reduction from coal utilization in the USA. Appropriate Hg pollution control of ...
An understanding of the behaviour of a number of element phases impacting on a commercial-scale Sasol-Lurgi FBDB gasifier
(Elsevier, 2008)
Chemical properties of coal which impact on gasification performance relate to those processes which do effect a change in chemical constitution, these in turn may lead to changes in physical properties such as particle ...
Pipe reactor gasification studies of a south african bituminous coal blend. Part 1. Carbon and volatile matter behaviour as function of feed coal particle size reduction
(Elsevier, 2009)
The Sasol-Lurgi fixed-bed dry-bottom (FBDB) MKIV gasifiers are proven to be robust as far as acceptable coal properties are concerned, in particular its ability to accommodate a range of particle size distributions (PSD) ...
Carbon particle type characterization of the carbon behaviour impacting on a commercial-scale Sasol-Lurgi FBDB gasifier
(Elsevier, 2009)
Char-form analysis, whilst not yet an ISO standard, is a relatively common characterization method applied to pulverized coal samples used by power utilities globally. Fixed-bed gasification coal feeds differ from pulverized ...
Identification of the reaction zones occurring in a commercial-scale Sasol-Lurgie FBDB gasifier
(Elsevier, 2008)
Gasification behaviour is particle dependent, whilst gasifier (reactor) behaviour is an averaging process of individual responses of each particle. It was hypothesized, that if it were possible to extract and analyze ...
Trace element behaviour in the Sasol-Lurgi fixed-bed dry-bottom gasifier. Part 3. The non-volatile elements: Ba, Co, Cr, Mn, and V
(Elsevier, 2009)
Coal contains most of the naturally occurring chemical elements in (at least) trace amounts, with specific elements and their concentrations dependent on the rank of the coal and its geological origins. The focus of this ...
Trace element behaviour in the Sasol-Lurgi MK IV FBDB gasifier. Part 2. The semi-volatile elements: Cu, Mo, Ni and Zn
(Elsevier, 2009)
Gasification is a coal conversion process that could be considered to be more amenable with regards to environmental impact factors when compared to combustion, as it provides minimum direct emission to the atmosphere due ...
Coal char temperature profile estimation using optical reflectance for a commercial-scale Sasol-Lurgi FBDB gasifier
(Elsevier, 2008)
In the Sasol-Lurgi fixed-bed dry-bottom (FBDB) gasifier the temperature in the combustion zone should not exceed the melting point of the ash-forming minerals, causing them to melt/flow and agglomerate. Sintering of ash ...