Green coal development for application in fixed-bed catalytic gasification

A novel ‘green coal’ product formulation has recently been developed and the utilization concept tested at the North-West University coal research laboratories. Hydrothermal liquefaction was used to produce bio-oil and biomass char from sweet sorghum bagasse at operating temperatures ranging between...

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Bibliographic Details
Published in:Journal of the South African Institute of Mining and Metallurgy 2018-04, Vol.118 (4), p.419-429
Main Authors: Bunt, J.R., Marx, S., Waanders, F.B., Leokaoke, N.T.
Format: Article
Language:English
Subjects:
Bagasse
Bituminous coal
Calcium carbonate
Catalysis
Catalysts
Combustion
Gas analyzers
Gasification
Laboratories
Liquefaction
Operating temperature
Pellets
Sorbents
Sorghum
Sulfur
Sustainable development
Temperature
Temperature effects
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Summary:A novel ‘green coal’ product formulation has recently been developed and the utilization concept tested at the North-West University coal research laboratories. Hydrothermal liquefaction was used to produce bio-oil and biomass char from sweet sorghum bagasse at operating temperatures ranging between 280 and 300°C, and the resultant char was mixed in various ratios (0, 0.25, 0.50, 0.75, and 1) with fine medium-rank C bituminous discard coal (50% of the pyritic sulphur entering the fixed-bed gasifier would be removed from the gaseous phase as insoluble CaSO4 when operated in a catalytic gasification mode at a temperature of 800°C, which is in good agreement with the experimental findings.
ISSN:2225-6253
0038-223X
2411-9717
DOI:10.17159/2411-9717/2018/v118n4a12