含铀物质对褐煤有机质热模拟生烃的影响  

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

作　　者：卢红选[1] 孟自芳[1] 李斌[1] 李相博[1] 郑民[1] 

机构地区：[1]中国科学院地质与地球物理研究所兰州油气资源研究中心

出　　处：《新疆石油地质》2007年第6期718-720,共3页Xinjiang Petroleum Geology

基　　金：国家"973"项目;多种能源矿产共存成藏(矿)机理与富集分布规律(2003CB214606);中国科学院知识创新重要方向项目;中国西北深层气与未熟-低熟烃研究(KZCX3-SW-147)资助

摘　　要：通过加水热模拟实验,研究了含铀物质对褐煤样品热解生烃产物的影响。结果发现,含铀物质的加入,对热解气态和液态烃类具有一定的催化作用,它极大地提高了褐煤热解产物中气体产物的生成量,降低了热解产物中氯仿沥青A的产率。对气体组分的分析表明,产物中二氧化碳的含量增加,而甲烷的含量较少,一氧化碳的含量则呈先增后减的趋势,对液态抽提物的分析发现,含铀物质促进了热解过程中产生的高碳数正构烷烃的降解,使得抽提物中饱和烃族组分的轻重比值有所增加,而奇偶优势值均有所降低,这在一定程度上加速了褐煤有机质的成熟过程。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 m∑nC21^-/m∑nC22^＋ 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.

关 键 词：铀 热解油 褐煤 生物标志物 

分 类 号：TE112.11[石油与天然气工程—油气勘探]