静态条件下表面活性剂OP-13促进HCFC-141b水合物生成  

Promotion on the formation of HCFC-141b hydrate under static conditions by surfactant OP-13

作　　者：杨扬 孙志高[1] 李翠敏[1] 李娟[1] 黄海峰[1] YANG Yang;SUN Zhigao;LI Cuimin;LI Juan;HUANG Haifeng(School of Environment Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,Jiangsu,China)

机构地区：[1]苏州科技大学环境科学与工程学院,江苏苏州215009

出　　处：《化工进展》2023年第6期2854-2859,共6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(BK20170382);苏州市科技计划(SS202149)。

摘　　要：为了促进静态条件下HCFC-141b水合物的生成,选择辛基酚与环氧乙烷的缩合物表面活性剂OP-13来研究其对HCFC-141b水合物生成效果的影响。OP-13促进HCFC-141b分散在水中,形成稳定的乳液。研究结果表明,添加适量的OP-13可大幅度缩短HCFC-141b水合物形成的诱导时间。添加质量分数1%的OP-13,HCFC-141b水合物生成的平均诱导时间最短,约为96min。OP-13的添加会影响HCFC-141b水合物的蓄冷量,当添加0.5%和1%的OP-13时,HCFC-141b水合物的蓄冷量较大,分别为247.57kJ/kg和248.42kJ/kg。综合水合物生成的诱导时间和蓄冷量,1%的OP-13为最佳添加量。研究结果也表明HCFC-141b水合物成核具有随机性,OP-13的添加稳定了水合物成核;表面活性剂OP-13促进水合物形成主要是由于其形成的胶束。水合物形成/分解循环实验过程中由于“记忆”效应,水合物可快速稳定形成。In order to promote the formation of HCFC-141b hydrate under static conditions,the condensate surfactant OP-13 of octylphenol and ethylene oxide was chosen to study its effect on the formation of HCFC-141b hydrate.Stable HCFC-141b-water emulsion can be prepared by adding OP-13.The experimental results showed that adding of OP-13 can significantly shorten the induction time of HCFC-141b hydrate formation.When OP-13 with mass fraction of 1%was added,the average induction time of HCFC-141b hydrate formation was the shortest,about 96min.The mass fraction of OP-13 affected the cold storage capacity of HCFC-141b hydrate.When 0.5%or 1%OP-13 was added,the cold storage capacity of HCFC-141b hydrate was bigger,which was 247.57kJ/kg and 248.42kJ/kg,respectively.Considering the induction time and cold storage capacity of hydrate formation,1%OP-13 was the best addition.The experimental results also showed that HCFC-141b hydrate nucleation was random,and the addition of OP-13 stabilized hydrate nucleation.The surfactant OP-13 promoted hydrate formation mainly due to its micelles.Hydrate can form rapidly and stably due to the“memory”effect during hydrate formation/dissociation.

关 键 词：水合物 诱导时间 HCFC-141B 蓄冷 循环稳定性 表面活性剂 乳液 

分 类 号：TK02[动力工程及工程热物理]