CO2水合物喷雾合成的生长特性实验研究

利用自行设计的可视化喷雾强化水合物制备实验系统,分析和比较了不同初始温度和初始压力条件下,喷雾合成CO2水合物的耗气量和反应釜内温度的变化,研究其生长特性.实验结果表明,初始压力越高,或者初始温度越低,那么诱导时间越短,单位时间内CO2耗气量越多,水合物生成速率越快.同时,通过对水合物生长过程的摄像在线观察,发现CO2水合物在接触界面紧贴反应釜壁面的两相接触处最先诱导成核并迅速扩展,生成水合物后,随着反应进行,吉布斯自由能差增大,水合物颗粒由圆滑状向数枝状变化.

Experimental research on growth characteristics of CO2 hydrate composed by water spray

In order to study the growth characteristics of CO2 hydrate,a special visual gas hydrate preparation apparatus with water spray was designed.The gas consumption and temperature variation in the process of CO2 hydrate formation were observed and compared under different initial temperatures and pressures.Results show that the lower the initial temperature,or the higher the initial pressure,the shorter the inducement time is the larger the gas consumption in unit time is,and the quicker the hydrate form.By th...