Comparison of primary and two-stage coal
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Aleksandra Rusin; Tadeusz Pazdziorek
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Article
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1989
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Elsevier Science
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English
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Coal-derived liquids obtained from direct, non-catalytic hydrogenation of Polish subbituminous coal were fractionated into four main distillation fractions: light, middle, vacuum and carbonization oils. The light and middle fractions were upgraded in a two-stage hydrogenation process under various c