化工进展 ›› 2023, Vol. 42 ›› Issue (6): 2854-2859.DOI: 10.16085/j.issn.1000-6613.2022-1428

• 化工过程与装备 • 上一篇    下一篇

静态条件下表面活性剂OP-13促进HCFC-141b水合物生成

杨扬(), 孙志高(), 李翠敏, 李娟, 黄海峰   

  1. 苏州科技大学环境科学与工程学院,江苏 苏州 215009
  • 收稿日期:2022-07-29 修回日期:2022-11-04 出版日期:2023-06-25 发布日期:2023-06-29
  • 通讯作者: 孙志高
  • 作者简介:杨扬(1996—),男,硕士研究生,主要从事储能技术研究。E-mail:869058167@qq.com
  • 基金资助:
    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)

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

YANG Yang(), SUN Zhigao(), LI Cuimin, LI Juan, HUANG Haifeng   

  1. School of Environment Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
  • Received:2022-07-29 Revised:2022-11-04 Online:2023-06-25 Published:2023-06-29
  • Contact: SUN Zhigao

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。

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

Abstract:

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.

Key words: hydrate, induction time, HCFC-141b, cold storage, cyclic stability, surfactants, emulsions

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