硫酸盐热化学还原反应体系实验研究

Study of Thermo-chemical Sulfate Reduction using Simulation Experiments

硫酸盐热化学还原 (TSR)反应的发生可能是造成碳酸盐沉积层中天然气耗竭的主要原因之一。对CH4 ～Ca SO4 和H2 S～Fe2 O3反应体系进行了实验研究 ,通过微库仑、气相色谱、FT IR和XRD等分析手段对实验结果进行了验证 ,考察了反应的动力学特征。结果表明 ,CH4 ～CaSO4 反应生成硫化氢、碳酸钙和水 ,H2 S～Fe2 O3反应生成多硫化物 ,反应过程的活化能分别为 15 4.6 2 3kJ/mol和 2 6 .16

Organic-inorganic reactions in the process of TSR (Thermochemical Sulfate Reduction) become the important factors to make the hydrocarbon disappear. Thermal simulation experiments for CH 4-CaSO 4 and H 2S-Fe 2O 3 systems were carried out. The properties of the products were characterized by microcoulometry, GC, FT-IR and XRD methods. On the basis of the experimental data, the kinetic parameters were determined. It is found that high activation energy is for the reaction of CH 4-CaSO 4 and low activation energy is for the reaction of H 2S-Fe 2O 3.