摘要
采用配位阴离子本体聚合,以辛烯/癸烯(体积比1∶1)为单体,优选单体/主催化剂的质量比为5 000∶1,四氯化钛和三异丁基铝的摩尔比为1∶100,得到了黏均相对分子质量约285×104的HG减阻剂。实验表明:以二环戊基二甲氧基硅烷替代二苯基二甲氧基硅烷作为给电子体,以20%三异丁基铝溶液代替纯三异丁基铝为助催化剂,可提高生产过程的安全性能。利用管径DN 50、测试段长度30m的室内环道进行了减阻剂的测试,加剂浓度越大,减阻和增输效果越好。在娄孟柴油管线进行了现场试验,加剂质量浓度为20和25mg/L,减阻率分别为30.9%和40.1%,增输率分别为23.1%和33.1%。
Using coordination anion polymerization, HG drag reducing agent was synthesized by 1-octene and 1-decene with volume ratio of 1 ： 1. Mass ratio of preferably monomer to catalyst was 5 000 ： 1, molar ratio of titanium tetrachloride to triisobutyl aluminium was 1 ： 100 and the viscosity average molecular weight of polymer drag reduction agent was 285 ×10^4. Experiment indicateed that safety of production process could be improved when dimethoxydiphenylsilane was replaced by dicyclopentyldimethoxysilane as electron donor and pure triisobutyl aluminium was replaced by 20 0% triisobu- tyl aluminium as cocatalyst. The DRA was tested in interior loop with diameter of DNS0 and length of 30 m. The higher the agent concentration, the greater the drag reduction rate and flow increase rate. The field experiment was conducted in the Lou Meng diesel oil pipeline. The drag reduction rate were 30.9% and 40.1%, flow increase rate were 23.1% and 33.1%, as additive concentration were 20 and 25 mg/L, respectively.
出处
《精细石油化工》
CAS
CSCD
北大核心
2014年第5期1-4,共4页
Speciality Petrochemicals
基金
中国石油化工股份有限公司科研项目管道第二代减阻剂技术(股份309027)
关键词
输油管道
减阻剂
环道评价
增输率
减阻率
oil pipeline
drag reducing agent
loop evaluation
flow increase rate
the drag reduction rate
