含水条件下正己烷与硫酸镁热化学还原反应体系模拟

Simulation experiments on TSR system of n-hexane and magnesium sulphate in presence of water

利用高压釜反应装置，在高温高压含水条件下对正己烷与硫酸镁热化学还原反应体系进行模拟，通过气相色谱仪、微库仑仪、毛细管气相色谱／脉冲火焰光度检测器、红外光谱仪及X射线衍射仪对气、油、固3相产物分别进行分析，并进行动力学研究。结果表明，反应体系在温度425～525℃内可以发生热化学还原反应，主要生成氧化镁、硫、焦炭、硫化氢、二氧化碳以及硫醇、硫醚和噻吩类等一系列有机硫化物，反应活化能为56．404kJ／mol。

Thermal simulation experiments on the TSR system of n-hexane and magnesium sulphate were carried out using an autoclave operated at high temperature and high pressure in the presence of water. Properties of the gas-oil-solid 3-phase products were analyzed by some advanced analytical methods including gas chromatography, microcoulometry, capillary gas chromatography combined with a pulsed flame photometric detector （GC- PFPD）, FT-IR and X-ray diffraction. The results show that the reaction can proceed at 425 ℃ -525 ℃ to produce MgO, S, C, H2S, CO2, and a series of organic sulfur compounds such as mercaptans, sulfoethers and thiophenes. According to the reaction model, the calculated activation energy of the reaction is 56.404 kJ/mol.