为研究介观尺度下甲烷水合物的生成速率及储气量等特性，选用介孔分子筛SBA-15为多孔介质，并添加热力学促进剂THF、TBAB和表面活性剂SDS以提高水合反应速率。水合物生成实验在定容恒温条件下进行，压力选取2.0 MPa和1.8 MPa，温度选取282.15 K和279.15 K。实验结果表明，在添加剂的共同作用下，介观尺度下水合物合成速率得到显著提高；反应过程中温度波动较小，最大为0.6 K，表明其具有良好的传热性；在水合物储气量方面，实验中最大储气量达到45.826 mmol （10 mL水），降温、增压能够提高水合物储气量；同时高压和低温能够有效地提高介观尺度下水合反应速率，最高生成速率达到2.335 mmol/min；在促进水合物生成、提高水合物储气能力、加快水合物反应速率方面THF均优于TBAB。

In order to study the formation speed and gas storage capacity of methane hydrate at mesoscopic scale,mesoporous molecular sieve SBA-15 is selected as porous medium in the experiment,and thermodynamic promoters THF and TBAB as well as surfactant SDS are added to improve the hydration reaction speed.The hydrates formation experiments are carried out under constant volume and constant temperature,with pressure at 2.0 MPa and 1.8 MPa,and the temperature at 282.15 K and 279.15 K.The experimental results show that under the joint action of the additives,the synthesis speed of hydrate in mesoscopic scale increases significantly.During the reaction process,the temperature fluctuates in a small range,up to 0.6 K,indicating its good heat transfer performance.In terms of hydrate's gas storage capacity,the maximum gas storage value reaches 45.826 mmol (10 mL water) in the experiment.At the same time,higher pressure and lower temperature can effectively improve the hydration reaction speed at mesoscopic scale,and the maximum generation rate reaches 2.335 mmol per minute.THF is superior to TBAB in promoting hydrate formation,improving gas storage capacity of hydrate and accelerating hydrate reaction speed.

赵小晨(1992-),男,硕士研究生,研究方向为水合物合成,18235692461@163.com