摘要
水合物的高效快速生成对水合物技术的工业化应用具有重要的意义。对当前纳米流体促进水合物生成过程进行了分析和总结。结果表明,纳米流体能够极大地强化水合物反应体系的传热过程。纳米粒子的浓度、纳米颗粒本身的物性、纳米颗粒的尺寸大小、纳米流体中固体颗粒的分散稳定性、纳米流体在管道中的流动速度及湍动程度是影响体系传热的主要因素。此外,纳米颗粒能够极大地强化水合物反应体系的传质过程,运输作用、防气泡聚合机理、边界层混合机理、渗透机理被用来解释这一现象。但其具体的促进机理仍不清楚,基础理论的建立是未来研究方向。
Efficient generation of hydrate is of great significance to the industrialization of hydrate technology.The hydrate formation process strengthed by nanofluid is analyzed and summarized.Nanofluids can greatly strengthen the heat transfer in the process of the hydrate formation.Factors influencing the thermal conductivity of nanofluids mainly include the concentration of the nanoparticles,the physical properties of nanparticles itself,the size of the nanoparticles,the dispersion stability of nanofluid solid particles,the speed of nanofluid flow in the pipeline and turbulent degree.In addition,nanoparticles can greatly strengthen the mass transfer in the process of the hydrate formation.Transportation function,anti-bubble mixing mechanism,polymerization mechanism and the boundary layer infiltration mechanism are used to explain this phenomenon.However,the specific promotion mechanism is still unclear.Related research is still in its infancy.Various aspects are still not mature.The establishment of the basic theory is proposed as the main job in the future.
出处
《现代化工》
CAS
CSCD
北大核心
2014年第4期51-56,共6页
Modern Chemical Industry
基金
国家自然科学基金项目(51176015)
中国石油科技创新基金项目(2011D50060606)
江苏省研究生培养创新工程项目(CXZZ13-0735)
扬中市科技局资助项目(YE2012015)
关键词
纳米流体
水合物
传热
传质
强化
nanofluids
hydrate
heat transfer
mass transfer
strengthen
