摘要
研究了在旋转填料床中制备天然气水合物,主要考察了超重力因子β、液气比等因素对含气量的影响。实验结果表明,当在压力5 MPa、温度277.15 K状态下:含气量随着超重力因子β增大而增大,β大于120后对含气量的影响不明显;天然气水合物含气量随液气比的增大呈现出先增大后减小的趋势,其最佳液气比为10 L/m3。结合晶体化学方法探讨了超重力方式合成天然气水合物的机理。与传统方式相比,加快了溶解、成核及生长过程,最终含气量显著提高。
The preparation of gas hydrate in a novel rotating packed bed reactor was investigated. At 5 MPa and 277.15K, the experiments were conducted to examine the effects of high gravity factors β, liquid to gas ratio on the capacity of gas hydrate. Experimental results indicated that the capacity of gas hydrate increased with increasing high gravity factors β. However, the effect was not obvious at a high gravity factors greater than 120. The capacity of gas hydrate increased firstly with increasing liquid to gas ratio, and then gently decreased. The optimum process conditions were as follows： liquid to gas ratio about 10 L/m^3. The mechanism of hydrate formation by high gravity was studied with the theory of crystal chemistry. Compared with the traditional system, the high gravity system accelerated the process of dissolution, nucleation and crystal growth to a great extent, and gas capacity was also significantly increased.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2007年第6期853-856,共4页
Chemical Industry and Engineering Progress
