| Oxidant-elemental sulfur as an effective promoter for transformation of organic matter to hydrocarbons at moderate-low temperatures |
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| 作者姓名： | 雷天柱 张更新 邱军利 夏燕青 南青去 |
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| 作者单位： | [1]Key Laboratory of Gas Geochemistry, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000, China [2]Graduate School, Chinese Academy of Sciences, Beijing 100039,China |
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| 基金项目： | This work was supported by the Innovation Foundation of Lanzhou Institute of Geology, Chinese Academy of Sciences （Grant No.DWCX-01 ）. |
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| 摘 要： | Elemental sulfur is widely dispersed in the hydrocarbon source rocks and its depositional environment is usually thought as a reducing environment. The presence or absence of free oxygen is a key to identify oxidizing or reducing environment. But elemental sulfur is often present as an oxidant in this environment. When elemental sulfur meets with organic matter, redox reaction will occur. In our simulation experiments at 200 -400℃ , the existence of elemental sulfur can sharply increase the amounts of hydrocarbons, hence leading to the production of immature or low-mature oils and natural gases. At the temperature of 300℃ , the addition of elemental sulfur will further enhance the relative yields of hydrocarbons,and the final yield of total extracts and gaseous hydrocarbons of similitude kerogens by more than 463% and 2760% , respectively, while those of oil shales are increased by about 71% and 2044% , respectively. But at the temperature of 450℃, elemental sulfur plays a negative role in liquid hydrocarbon formation. The presence of elemental sulfur is probably a key factor in the gypsolyte environment leading to the formation of immature or low-mature oils, as well as the coexistence of immature or low-mature oils and natural gases.
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| 关 键 词： | 硫磺 地球化学 氧化剂 碳氢化合物 温度条件 高温分解 |
Oxidant-elemental sulfur as an effective promoter for transformation of organic matter to hydrocarbons at moderate-low temperatures |
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| Tianzhu Lei,Gengxin Zhang,Junli Qiu,Yanqing Xia,Qingyun Nan.Oxidant-elemental sulfur as an effective promoter for transformation of organic matter to hydrocarbons at moderate-low temperatures[J].Chinese Journal of Geochemistry,2005,24(3):265-272. |
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| Authors: | Tianzhu Lei Gengxin Zhang Junli Qiu Yanqing Xia Qingyun Nan |
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| Institution: | (1) Key Laboratory of Gas Geochemistry, Institute of Geology and Geophysics, Chinese Academy of Sciences, 730000 Lanzhou, China;(2) Graduate School, Chinese Academy of Sciences, 100039 Beijing, China |
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| Abstract: | Elemental sulfur is widely dispersed in the hydrocarbon source rocks and its depositional environment is usually thought as a reducing environment. The presence or absence of free oxygen is a key to identify oxidizing or reducing environment. But elemental sulfur is often present as an oxidant in this environment. When elemental sulfur meets with organic matter, redox reaction will occur. In our simulation experiments at 200-400℃, the existence of elemental sulfur can sharply increase the amounts of hydrocarbons, hence leading to the production of immature or low-mature oils and natural gases. At the temperature of 300℃, the addition of elemental sulfur will further enhance the relative yields of hydrocarbons, and the final yield of total extracts and gaseous hydrocarbons of similitude kerogens by more than 463% and 2760%, respectively, while those of oil shales are increased by about 71% and 2044%, respectively. But at the temperature of 450℃, elemental sulfur plays a negative role in liquid hydrocarbon formation. The presence of elemental sulfur is probably a key factor in the gypsolyte environment leading to the formation of immature or low-mature oils, as well as the coexistence of immature or low-mature oils and natural gases. |
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| Keywords: | elemental sulfur oxidant similitude kerogen thermal simulation experiment pyrolysis pyrolysis product |
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