Effect of Uranium Substance on Hydrocarbon Generation from Lignite by Hydrous Pyrolysis

Abstract

Abstract: Organic-inorganic interaction is ubiquitous and unalterable fact in sedimentary basin. In this paper, the effect of uranium substance on the lignite pyrogenation was studied by hydrous pyrolysis. The result showed that an increase of gas yields and a decrease of chloroform bitumen "A" were observed by addition of uranium substance. Further investigations showed that the content of carbon dioxide increased, while the content of methane decreased, and carbon monoxide was one of the metastable intermediates during the hydrous pyrolysis. At the same time the mΣnC₂₁^- /mΣnC₂₂⁺ ratio increased for the high molecular weight hydrocarbons as degraded for the uranium substance and the OEP value decreased, which accelerated the maturity of lignite in a certain extent.

Key words: uranium, pyrolysis oils, lignite, biomarker

CLC Number:

TE112.11

LU Hong-xuan, MENG Zi-fang, LI Bin, LI Xiang-bo, ZHENG Min. Effect of Uranium Substance on Hydrocarbon Generation from Lignite by Hydrous Pyrolysis[J]. Xinjiang Petroleum Geology, 2007, 28(6): 718-720.

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