Search
Now showing items 1-10 of 51
Volatile trace element behaviour in the Sasol® fixed-bed dry-bottom (FBDB)™ gasifier treating coals of different rank
(Elsevier, 2011)
Trace element simulation and validation of model predictions for the elements Hg, As, Se, Cd and Pb have recently been undertaken for the Sasol® FBDB™ gasification process operating on lump coal. The validation was conducted ...
Identification of reaction zones in a commercial Sasol-Lurgi fixed bed dry bottom gasifier operating on North Dakota lignite
(Elsevier, 2011)
The Sasol-Lurgi fixed bed dry bottom gasification technology has the biggest market share in the world with 101 gasifiers in operation. To be able to further improve the technology and also to optimise the operating plants, ...
Quantification of oxygen capture in mineral matter during gasification
(Elsevier, 2008)
It has been observed that during the transformation of minerals at higher temperatures (>1000 °C), mineral species are formed containing a high number of oxygen molecules, i.e. gehlenite (Ca2Al2SiO7), mullite (Al6Si3O15), ...
Destabilization dynamics of clay and acid-free polymers of ferric and magnesium salts in AMD without pH adjustment
(IWA Publishing, 2016)
The physicochemical treatment was employed to treat acid mine drainage (AMD) in the removal of turbid materials using clay only (exp A) and a combination of clay, FeCl3 and Mg(OH)2 (exp B) to form a polymer. A 5 g sample ...
Behaviour of calcium-containing minerals in the mechanism towards in situ CO2 capture during gasification
(Elsevier, 2008)
Mineral matter transformation and the behavior of mineral matter in the coal during gasification, provide more information on the suitability of a specific coal source for combustion or gasification purposes. Therefore, ...
Thermal reduction of barium sulphate with carbon monoxide: a thermogravimetric study
(Elsevier, 2010)
The kinetic parameters of the reduction of barium sulphate to barium sulphide using carbon monoxide fractions of 2.4–9.6% and temperatures of 850–1000 °C, using an isothermal thermogravimetric method, were obtained. This ...
Physical property behaviour of North Dakota lignite in an oxygen/steam blown moving bed gasifier
(Elsevier, 2013)
In this study lignite originating from North Dakota (USA) was thermally treated in an oxygen/steam blown
commercial-scale moving bed gasifier operating on lump coal at the Dakota Gasification Company (DGC)
in order to ...
Manipulation of the ash flow temperature and viscosity of a carbonaceous Sasol waste stream
(Elsevier, 2010)
In 2001 Sasol investigated the possibility to convert a Sasol-Lurgi MK III fixed bed dry bottom coal gasifier at the former Sasolburg coal-to-liquids plant to a slagging gasification process and selected the Lurgi Multi ...
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 ...