期刊
CHINESE JOURNAL OF CHEMICAL ENGINEERING
卷 40, 期 -, 页码 237-244出版社
CHEMICAL INDUSTRY PRESS CO LTD
DOI: 10.1016/j.cjche.2020.10.003
关键词
Kinetic hydrate inhibitors; Synthesis; Poly(N-vinylcaprolactam-co-butyl methacrylate); Natural gas; Hydrate; Computer simulation
资金
- Key Science and Technology Program of Shaanxi Province [2014K10-03]
This study prepared a new kinetic hydrate inhibitor P(VCap-BMA) and found that it exhibited synergistic inhibitory effects when compounded with low doses of methanol or ethylene glycol. Additionally, the P(VCap-BMA) - methanol system showed better inhibitory effects compared to the PVCap - methanol system. These findings provide valuable insights for the research and application of novel hydrate inhibitors.
Natural gas hydrate inhibitor has been serving the oil and gas industry for many years. The development and search for new inhibitors remain the focus of research. In this study, the solution polymerization method was employed to prepare poly(N-vinyl caprolactam-co-butyl methacrylate) (P(VCap-BMA)), as a new kinetic hydrate inhibitor (KHI). The inhibition properties of P(VCap-BMA) were investigated by tetrahydrofuran (THF) hydrate testing and natural gas hydrate forming and compared with the commercial KHIs. The experiment showed that PVCap performed better than copolymer P(VCap-BMA). However, low doses of methanol or ethylene glycol are compounded with KHIs. The compounding inhibitors show a synergistic inhibitory effect. More interesting is the P(VCap-BMA)-methanol system has a better inhibitory effect than the PVCap-methanol system. 1% P(VCap-BMA) + 5% methanol presented the best inhibiting performance at subcooling 10.3 degrees C, the induction time of natural gas hydrate was 445 min. Finally, the interaction between water and several dimeric inhibitors compared by natural bond orbital (NBO) analyses and density functional theory (DFT) indicated that inhibitor molecules were able to form the hydrogen bond with the water molecules, which result in gas hydrate inhibition. These exciting properties make the P(VCap-BMA) compound hydrate inhibitor promising candidates for numerous applications in the petrochemical industry. (C) 2021 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
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