期刊
ENERGY & FUELS
卷 26, 期 1, 页码 488-494出版社
AMER CHEMICAL SOC
DOI: 10.1021/ef200701g
关键词
-
资金
- Chevron Energy Technology Company
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada Research Chairs Program
Pipelining of heavy crudes can be facilitated by preparing oil-in-water (O/W) emulsions of the crude, but separation of the oil from the water after pipelining is problematic if conventional surfactants are used. Long-chain acetamidines are CO2-triggered switchable surfactants, being surface-active when CO2 is present but not when CO2 is absent. Unfortunately, in the presence of CO2, they stabilize water-in-oil (W/O) emulsions of heavy crude rather than the desired O/W emulsions. However, in the absence of added CO2, several compounds (Na2CO3, three of the long-chain acetamidines, and two other amidines) stabilize O/W emulsions. These low-viscosity emulsions can later be broken by the addition of CO2. The residual oil content in the recovered water is lowest if the compound used to stabilize the original emulsion was a long-chain acetamidine.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据