摘要
对聚乙烯吡咯烷酮(PVP)在4℃、8.27MPa附近压力下对天然气水合物的抑制性能进行了实验,结果表明,PVP可以明显抑制水合物的生成,但不同分子量段的PVP有着不同的抑制效果:PVPK17因为分子量太小,几乎没有抑制作用;PVPK30有一定的抑制作用;而PVPK90则有着很好的抑制效果,能在实验条件下抑制1200min没有水合物的生成。另外发现,不同浓度的PVP对天然气水合物的抑制效果也不相同:对于PVPK30,1%浓度比0.5%浓度的抑制效果好;而对于PVPK90,则1%浓度的抑制效果比0.5%和2%浓度的要好。
Experiments are conducted on inhabitation performance of polyvinylpyrrolidone (PVP) on natural gas hydrate under the condition of temperature 4 ℃ and pressure 8.27 MPa. The experiment results show that PVP can obviously prevent hydrate, and PVP with different molecular weights has different inhibition effectiveness: PVPK17 nearly has no inhibition effect because of its small molecular weight; PVPK30 has mild inhibition effect; while PVPK90 can inhibit natural gas from hydrate for continuous 20-hr in laboratory conditions with superior inhibition performance. Another discovery is made that PVP with different concentrations has different inhibition effect on natural gas: PVPK30 with 1% concentration are more effective than that of 0.5%, while PVPK90 with 1% concentration is better than that of 0.5% and 2%.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2006年第3期125-128,共4页
Natural Gas Industry
基金
国家自然科学基金西部重大研究计划项目资助(90410003)
关键词
天然气
水合物
动力学
抑制剂
聚乙烯吡咯烷酮
分子量
浓度
效果
natural gas, hydrate, dynamics, inhibitor, Polyvinylpyrrolidone (PVP), molecular weight, concentration, effectiveness
