THF-SDS对瓦斯水合分离过程温度场分布影响

发布时间：2018-08-16 10:20

【摘要】：为探究THF-SDS复配溶液对瓦斯水合反应过程温度场影响,利用配备阵列式温度传感器的水合反应装置,研究了3组促进剂溶液(1 mol/L THF,1 mol/L THF+0.02 mol/L SDS,1 mol/L THF+0.1 mol/L SDS)体系中瓦斯混合气(85%CH4,7%N2,3%O2,5%CO2)水合分离过程温度场分布特征。结果表明:瓦斯水合体系中SDS浓度增加,反应放热速率呈递增趋势(0.030~0.230 k J/min);反应热导致水合体系温度分布发生变化,体系上层温度最高,下层温度最低,体系中SDS浓度越高,温度梯度越明显;瓦斯水合物导热系数随体系温度分布发生改变(0.529~0.534 W/(m·K)),SDS浓度越高,瓦斯水合物导热系数越大。分析认为,THF-SDS复配溶液改善了瓦斯水合分离热力学条件,提高了气-水转化率,影响了不同水合体系温度场分布。
[Abstract]:In order to study the effect of THF-SDS compound solution on the temperature field of gas hydration reaction process, the temperature field of gas mixture (85% CH4, 7% N2, 3% O2, 5% CO2) hydration separation process in three groups of accelerator solutions (1 mol/L THF, 1 mol/L THF + 0.02 mol/L SDS, 1 mol/L THF + 0.1 mol/L SDS) was studied by using a hydration reaction device equipped with an array temperature sensor. The results show that the reaction heat release rate increases with the increase of SDS concentration in gas hydrate system (0.030-0.230 K J/min); the reaction heat causes the change of temperature distribution in gas hydrate system; the upper layer temperature is the highest, the lower layer temperature is the lowest; the higher the SDS concentration in the system, the more obvious the temperature gradient; the thermal conductivity of gas hydrate increases with the system. Temperature distribution changes (0.529-0.534 W/(m.K)). The higher the concentration of SDS, the greater the thermal conductivity of gas hydrate.
【作者单位】：黑龙江科技大学安全工程学院;瓦斯等烃气输运管网安全基础研究国家级专业中心实验室;中国矿业大学煤矿瓦斯治理国家工程研究中心;黑龙江科技大学建筑工程学院;
【基金】：国家自然科学基金重点资助项目(51334005);国家自然科学基金资助项目(51174264,51104062)
【分类号】：TD712

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