A new physical process for desulfurization of low-rank coals

• Publisher: Elsevier Science
• Year: 2001
• Weight: 176 KB
• Volume: 42
• Category: Article
• ISSN: 0140-6701
• DOI: 10.1016/s0140-6701(01)80089-8

✦ Synopsis

01 Solid fuels {preparation) dichloromethane and the average molecular weight of the extracts were detected. The degree of conversion of the coals studied to the products solubility in dichloromethane was found to be surprisingly high regarding the low-rank coals. This paper puts forward an hypothesis that the high content of sulfur in low rank coals gives them certain properties, typical of coking coals.

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The pore structure of the Argonne coals as interpreted from contrast matching small angle neutron scattering Hall, P. J. er al. Fuel, 2000, 79, (11). 1327-1332. Contrast matching small angle neutron scattering has been performed on a series of Argonne coals using HzO/DzO mixtures using short contact times between the coal and liquid. Calculations of the neutron scattering densities of the coals based on their 'formulae' and helium densities are discussed. The results of the CM-SANS are eiven and it is shown that the scattering from the non-contrast-matchgd samples is unreliable. It is also demonstrated that porosity in coals is effectively determined by the presence of water and that porosity levels decrease with increasing rank. 00100023