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促进天然气水合物快速、大量生成对天然气水合物的工业化应用具有重要意义,气水比作为影响水合物生成的关键因素,有必要对其进行深入研究。首先提出一种新的理想气水比数学计算公式,在温度为275.15 K、压力为6.6 MPa条件下,研究了气水比对甲烷水合物的生成影响,并验证了理想气水比数学计算公式的准确性。结果表明:气水比大于1.8时,水合物生成速率显著加快;气体消耗量由初始气体量和实验相平衡压强两个因素共同决定;水合物实际储气量受气水比变化影响较大;以十二烷基硫酸钠(SDS)溶液作为水合剂,在理想气水比条件下,水合物生成情况符合计算预期效果。选择合适的气水比,不仅可以提高水合物生成速率,而且可以增加气体消耗量,提高水合物实际储气量。
Promote the rapid and large-scale generation of natural gas hydrate is of great significance to the industrial application of natural gas hydrate. As the key factor that affects the formation of hydrate, it is necessary to further study the gas-water ratio. Firstly, a new mathematical formula of ideal gas-water ratio is proposed. Under the conditions of 275.15 K and 6.6 MPa, the effect of gas-water ratio on the formation of methane hydrate is studied, and the mathematical formula of ideal gas-water ratio is verified Accuracy The results show that the gas hydrate formation rate is significantly accelerated when the gas-water ratio is greater than 1.8. The gas consumption is determined by both the initial gas amount and the equilibrium pressure of the experimental phase. The actual gas storage of the hydrate is greatly affected by the gas-water ratio variation. Sodium dialkyl sulfate (SDS) solution as a hydration agent, in the ideal gas-water ratio conditions, hydrate formation is in line with the expected results. Choosing a suitable gas-water ratio not only increases the hydrate formation rate, but also increases the gas consumption and increases the actual gas storage capacity of the hydrate.