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- W2059653061 abstract "The hydroliquefaction of a high sulphur and bituminous Italian coal (Sulcis, Sardinia) was studied batchwise in a 1.5 dm3 autoclave to assess the influence of coal comminution (dp = 45−664 μm), coal/solvent (c = 0.22 to 0.37 g coal/g solvent) and catalyst/coal (Y = 0−15 mg catalyst/g coal) ratios, and reaction time (t = 60−120 min) on the overall coal conversion (ηh), yields of oil (ηo) and asphaltene (ηa) and hydrodesulphurization (ηhs) by means of a composite design technique. Significant effects were observed on ηh by dp, on ηo and ηa by Y, and on ηhs by Y and t, by means of an F-test on the basis of Yates's method. The variables were then fitted to a quadratic expression with an overall mean standard error of about 10%. The optimal range of the operating variables under the experimental conditions (i.e., 405°C, 150 bar) was derived by statistical treatment of the hydroliquefaction yield data and found to be dp = 0.13 mm (100–150 mesh), c = 0.3 g coal/g solvent, Y = 13–15 mg catalyst/g coal and t = 100−130 min. Operating at these conditions results in an overall coal conversion approximately equal to 92%, oil and asphaltene yields ranging from 40 to 45%, and a 90% conversion of the initial sulphur into H2S." @default.
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- W2059653061 date "1985-04-01" @default.
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- W2059653061 title "Study on the operating variables of sulcis coal hydroliquefaction" @default.
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- W2059653061 doi "https://doi.org/10.1016/0378-3820(85)90043-8" @default.
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