中文摘要：

利用高压釜反应装置,在一定温度和压力下考察了吐哈原油和胜利原油与硫酸镁的热化学还原反应,热模拟实验在350～450℃含水条件下进行。利用库仑仪和气相色谱仪对反应后的气体产物进行分析,油相的总硫含量用库仑仪进行测定,固体产物组成利用红外光谱仪与X射线衍射仪进行分析,并对反应动力学进行了研究。结果表明,原油中的LSC含量对TSR的反应程度有重要影响,含量越高,TSR反应程度越强烈。根据动力学模型,计算得到吐哈原油与硫酸镁反应的活化能53.26 kJ.mol-1,胜利原油与硫酸镁反应的活化能57.91 kJ.mol-1,反应活化能的差异可能亦与LSC有关。LSC影响TSR的反应机理主要是形成中间体硫酸酯,这种物质很活泼,很容易氧化烃类。

英文摘要：

In the system of crude oil and magnesium sulfate,thermal sulfate reduction was conducted in autoclave under certain temperature and pressure conditions.The thermal-simulation experiments were performed at 350~450℃ in the presence of water. Gaseous products were analyzed using gas chromatography and microcoulometry.Gaseous products were composed of saturated hydrocarbons（C1 ~ C6）,unsaturated hydrocarbons（C2~C5） and H2,CO2,CO.Content of CH4,H2 and CO2 increased with temperature growing.Gas dryness coefficient which was used to monitor the evolution of the hydrocarbon gas population also increased with temperature growing.Gas dryness coefficient of TSR was much more than Gas dryness coefficient of crude oil pyrolysis.It showed that the capacity of sulfate oxidization hydrocarbon increased with temperature growing. Total sulfate of the liquid products was analyzed by microcoulometry.At the begining,content of total sulfur in liquid products of TSR was higher than crude oil.It implied the reaction temperature for the system of crude oil and magnesium sulfate was lower than the pyrolysis temperature of crude oil.With the temperature growing,content of total sulfur in liquid products of reaction of Tuha crude oil and magnesium sulfate gradually reduced.It may be that large amounts of Labile Sulfur Compounds（LSC） contains in Tuha crude oil,whose degradation rate was higher than generation rate during reaction.While content of total sulfur in liquid products of reaction of Shengli crude oil and magnesium sulfate increaseed and then sharply reduced.It may be a lot of Stable Sulfur Compounds（SSC） contained in Shengli crude oil,which was hard to degrade in lower temperature. Solid products were analyzed by FT-IR and X-ray diffraction.MgO and MgSO4 were found to coexist in solid product of TSR.According to the the molar conversion calculated from the weight change of the solid products,the reaction kinetics was investigated.The activation energy of the system of Tuha crude oil and magnesium sulfate was 53.26