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论文类型：期刊论文

发表时间：2017-06-01

发表刊物：FUEL PROCESSING TECHNOLOGY

收录刊物：SCIE、EI

卷号：160

页面范围：130-135

ISSN号：0378-3820

摘要：In this paper, the liquefaction of a Bulianta coal, from China Shenhua Group, was carried out in a hydrogen donor solvent, tetralin, or a non-hydrogen donor solvent, 1-methylnaphthalene, with or without catalyst to clarify the mechanism of hydrogen transfer. And roles of solvent and a nano-size iron catalyst from Shenhua Group in the heating-up stage of DCL were also investigated by using mixed solvent of decalin, phenanthrene, pyrene or fluoranthene and tetralin. The results show that tetralin inhibits the reaction of coal macromolecule to oil and the transfer of H-2. The major transfer approach of H-2 may be directly from H-2 to coal rather than via the hydrogen donor solvents in the presence of the nano-sized iron catalyst. In the heating-up stage of DCL, the major role of solvent is to provide activated hydrogen for coal. High dissolving capability of the liquefaction solvent that has high enough hydrogen donor capacity is beneficial for improving liquefaction performance. The dominant function of the catalyst is to promote the activation of H-2, which can improve coal liquefaction performance in the heating-up stage of DCL. (C) 2017 Elsevier B.V. All rights reserved.