矿物/金属元素在煤成烃过程中的作用——以黔西滇东上二叠统大河边煤矿煤样为例
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
查看参考文献33篇
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文摘
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通过对原煤及添加过渡金属元素Mo(钼)和黄铁矿的原煤进行不同升温速率条件下煤层气生成热模拟实验,论述黄铁矿和Mo对于原煤热解生烃过程的影响。结果表明:矿物/过渡金属元素使原煤有机质具有更大的生烃潜力。黄铁矿对CH_4具有显著的正催化作用;同时加入黄铁矿和Mo时,生成的气体中会含有更多数量的重烃气,并有利于烯烃的产出;Mo对C_7—C_(14)具有显著的催化作用,但当同时有黄铁矿的参与时则会使C_7—C_(14)产率降低;黄铁矿/Mo的加入,则会影响到芳烃的产率高峰;较高的过渡金属单质含量对煤中本身含有的硫元素转化为H2S气体有抑制作用。在中—高温度范围内,催化剂对有机质生烃具有催化作用,升温条件能明显影响黄铁矿对芳烃、饱和烃和沥青质的催化作用,反映古地温场条件是催化生烃的一个重要影响因素。 |
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其他语种文摘
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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 C_7-C_(14) generation,but the yield of C_7-C_(14) 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. |
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来源
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天然气地球科学
,2012,23(1):141-152 【扩展库】
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关键词
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煤层气
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矿物
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过渡金属元素
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催化作用
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地址
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1.
中国石化华东分公司石油勘探开发研究院, 江苏, 南京, 210011
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中国(徐州)矿业大学资源与地球科学学院, 江苏, 徐州, 221116
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中国科学院广州地球化学研究所, 广东, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1672-1926 |
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学科
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石油、天然气工业 |
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基金
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国家自然科学基金项目
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江苏省创新计划基金项目资助
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文献收藏号
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CSCD:4495975
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