摘要：Experimental data on chord length distributions and growth rate during methane hydrate formation in water-in-oil emulsions were obtained in a high pressure stirring reactor using focused beam reflectance measurement and particle video microscope. The experiments were carried out at 274.2 K for 10-30% water cuts and agitation rates ranging from 200 to 500 rpm initially at 7.72 MPa. Rapid growth was accompanied by gradually decrease in rate. Free water was observed to become depleted during rapid growth while some water remained encapsulated inside hydrate layers constituting a mass transfer barrier. The apparent kinetic constants of methane hydrate formation and free-water fractions were determined using a newly developed kinetic model independent of the dissolution rate at the gas-oil interface. It was illustrated that continued growth depends on distribution and transfer of water in oil-dominated systems. This perception accords with observations of hydrate film growth on suspended water droplet in oil and clarifies transfer limits in kinetics. (c) 2016 American Institute of Chemical Engineers AIChE J, 63: 1010-1023, 2017

关键字：hydrates mass transfer particle measurements mathematical modeling reaction kinetics

ISSN号：0001-1541

卷、期、页：卷: 63 期: 3 页: 1010-1023

发表日期：2017-03-01

影响因子：0.000000

收录情况：SCI（科学引文索引印刷版）,ESI（基本科学指标数据库）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：AICHE JOURNAL

通讯作者：吕一宁

第一作者：孙长宇,刘蓓,陈光进,宫敬

论文类型：期刊论文

论文概要：吕一宁,孙长宇,刘蓓,陈光进,宫敬，A water droplet size distribution dependent modeling of hydrate formation in water/oil emulsion，AICHE JOURNAL，2017，卷: 63 期: 3 页: 1010-1023

论文题目：A water droplet size distribution dependent modeling of hydrate formation in water/oil emulsion