Catalysis Action of Mineral/Metal Elements during Coal-derived Hydrocarbons Process:An Example of the Late Permian Coal from Dahebian Coal Mine  in Eastern Yunnan and Western Guizhou

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  • 1.Research Institute of Petroleum Exploration and Development of EastBranch Company,SINOPEC,Nanjing 210011,China; 
    2.College of Mineral Resources and Geoscience,China University of Mining and Technology,Xuzhou 221116,China;
    3.Key Laboratory of CBG Resources and the Accumulation Process of Ministry of Education,Xuzhou 22116,China;
    4.Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China

Received date: 2011-10-19

  Revised date: 2011-12-02

  Online published: 2012-02-10

Abstract

The pyrolysis of coal with presence and absence of pyrite or Mo were carried out with different hearing ratios to study the coal bed gas formation process.The influence of pyrite and Mo on coal pyrolysis hydrocarbon-generating process was discussed.The results show that the mineral/transition metal elements make the coal have greater potential of hydrocarbon generation.Pyrite makes a positive and significant catalytic role to the methane generation.The presence of pyrite and Mo at the same time made the coal generate a few amount of heavier hydrocarbon gases,and the presence of pyrite and Mo is helpful to olefins output.Transition metal Mo has the remarkable catalytic effect on the C7—C14 generation,but the yield of C7—C14 components reduce if the presence of pyrite and Mo co-exists.Pyrite and Mo influence the peak aromatics hydrocarbon and asphalt generation.High content of transition metal elements inhibit the H2S formation from the sulfur in the coal.Catalysts have catalytic action for hydrocarbon generation at middle to high temperatures.Heating rate affects the pyrite catalysis for saturated hydrocarbon,aromatic hydrocarbon and asphalt,indicating it would be an important factor for mineral/elements catalysis in the generation of hydrocarbons at geological geothermal conditions.

Cite this article

Wu Yan-yan,Qin Yong,Liu Jin-zhong,Wang Ai-kuan . Catalysis Action of Mineral/Metal Elements during Coal-derived Hydrocarbons Process:An Example of the Late Permian Coal from Dahebian Coal Mine  in Eastern Yunnan and Western Guizhou[J]. Natural Gas Geoscience, 2012 , 23(1) : 141 -152 . DOI: 10.11764/j.issn.1672-1926.2012.01.141

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