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HyperCoal is a clean coal with ash content <0.05wt%. HyperCoal was prepared from a bituminous coal by solvent extraction method with an extraction yield of 66.7%. Effect of K 2 CO 3 loading and temperature on steam gasification rate of HyperCoal and parent raw coal was investigated. Experiments were carried out at 775 and 700°C for both HyperCoal and coal with 0–25% catalyst loading...
Ashless coals (HyperCoal) produced by thermal extraction of coals of different ranks with 1-methylnaphthalene at temperatures from 300 to 420°C for 60min were characterised. HyperCoal has many light components that are easily volatised and decomposed, and it has high thermal reactivity. All the HyperCoals showed high thermoplasticity during heating; in particular, HyperCoals obtained from low-rank...
HyperCoal is an ultra clean coal with ash content <0.05wt%. Catalytic steam gasification of HyperCoal was carried out with K 2 CO 3 at 775–650°C for production of H 2 rich gas and synthesis gas. The catalytic gasification of HyperCoal showed nearly four times higher gasification rate than raw coal. The major gases evolved were H 2 : 63vol%, CO: 6vol% and CO 2...
In order to produce ashless coal (HyperCoal) in a high-yield, thermal extraction with several organic solvents under hot filtration at 360 o C using a flow-type extractor was performed, and the effect of the extraction solvent on the extraction yield and ash content in the HyperCoal was investigated. Crude methylnaphthalene oil (CMNO), a cost-effective industrial solvent, gives much higher...
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