摘要
为解决静态系统中水合物形成时间长、生长速度慢的问题,在水合物形成体系中添加由正癸酸(CA)和十二醇(DE)复合而成的有机相变材料作为水合物形成促进剂,研究相变材料的添加对HCFC-141b水合物形成的影响。采用高速搅拌的方法制备了CA-DE+HCFC-141b+水乳液体系,乳化液增加了HCFC-141b与水的接触面积,促进了水合物在静态系统中的生成。在实验条件范围内,添加1%的CA-DE相变材料,水合物形成诱导时间最短,水合物形成过程中温度的升高幅度最大,水合物的生长速度最大,对水合物形成促进效果最好。水合物形成诱导时间实验结果表明,水合物的形成具有一定的随机性。在0.2℃和1℃的实验条件下,HCFC-141b水合物可在1h内形成。温度影响水合物的形成,温度越低水合物形成引导时间越短,生长速度越快、水合物生成的随机性越小。
In order to solve the problem of long induction time and low growth rate for hydrate formation in quiescent systems, capric acid （CA） and lauryl alcohol （DE） composite phase change material is used as promoter for HCFC-141b hydrate formation. The effect of composite phase change material on the HCFC- 14 lb hydrate formation is investigated experimentally. Emulsion of HCFC- 14 lb is prepared using high-speed stirring. Emulsion increases the contact area between HCFC-141b molecules and water molecules and promotes hydrate formation. The promoting effect is the best with the shortest induction time, the largest temperature rise and the fastest growth of hydrate formation by adding 1% CA-DE phase material under experimental conditions. The experimental results show that the induction time of hydrate formation has a certain randomness. HCFC-141b hydrate could form within lh under 0.2℃ and 1℃. The induction time of hydrate formation decreases, the rate of hydrate growth increases and the randomness of hydrate formation decreases with the reduction of the temperature.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2017年第4期1265-1269,共5页
Chemical Industry and Engineering Progress
基金
江苏省高校自然科学研究重大项目(16KJA480001)
江苏省自然科学基金项目(BK2012602)
江苏省建筑智慧节能重点实验室(2014-07)
中科院广州能源所气体水合物重点实验室开放课题(2014DP173027)
