Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation | |
Long, Zhen1,2,3,4; Zhou, Xuebing1,2,3,4; Lu, Zhilin1,2,3,4; Liang, Deqing1,2,3,4
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| 2022-03-01 | |
| Source Publication | ENERGY
 |
| ISSN | 0360-5442 |
| Volume | 242Pages:12 |
| Corresponding Author | Liang, Deqing(liangdq@ms.giec.ac.cn) |
| Abstract | Low dosage kinetic hydrate inhibitors play an important role in flow assurance for oil and gas industry. New polymers especially based on N-vinyl caprolactam (NVCap) are widely designed to serve as potential inhibitors. In this work, a series of random copolymers of NVCap with hydrophobic monomer isopropylacrylamide (NIPAM) were synthesized. The effect of molecular weight on inhibition performance of newly copolymers (PVCap-co-NIPAM)s on CH4 hydrate formation were firstly examined and compared with N-vinyl caprolactam homopolymer (PVCap). The macroscopic kinetic tests indicated that all the copolymers were more powerful than PVCap as nucleation inhibitors under the same conditions. Significant reductions in the hydrate growth rates by 1.0 wt% inhibitors were also observed. Copolymers with the lowest molecular weight possessed the best suppression performance. Powder X-ray diffraction and Raman spectra indicated neither PVCap nor PVCap-co-NIPAM affected the hydrate structure due to their too large molecular size to match the hydrate cages. However, cage-dependent gas occupancy calculated from Raman data proved that the polymers preferred to hinder CH4 molecules from being trapped by large cages (5(1,2)6(2)). A possible inhibition mechanism of PVCap-co-NIPAM was also proposed. These results could be helpful to develop synergistic kinetic hydrate inhibitors for guaranteeing pipeline fluids transportation safety. (C) 2021 Elsevier Ltd. All rights reserved. |
| Keyword | Kinetic hydrate inhibitors (KHIs)
Poly (N-vinyl caprolactam)-co-isopropylacrylamide) (PVCap-co-NIPAM) Subcooling Growth Micro-structure |
| DOI | 10.1016/j.energy.2021.123056 |
| WOS Keyword | AMPHIPHILIC BLOCK-COPOLYMERS ; MONOETHYLENE GLYCOL ; KINETIC INHIBITION ; GAS ; VINYLCAPROLACTAM ; AGGLOMERATION ; DISSOCIATION ; POLYMERS ; ENERGY ; WATER |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51506202] ; Pearl River S&T Nova Program of Guangzhou[201806010114] ; Guangdong Special Support Program-Local innovation and entrepreneurship team project[2019BT02L278] |
| WOS Research Area | Thermodynamics ; Energy & Fuels |
| Funding Organization | National Natural Science Foundation of China ; Pearl River S&T Nova Program of Guangzhou ; Guangdong Special Support Program-Local innovation and entrepreneurship team project |
| WOS Subject | Thermodynamics ; Energy & Fuels |
| WOS ID | WOS:000792909400002 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/36495 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Liang, Deqing |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China 2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China 4.State Key Lab Nat Gas Hydrate, Beijing 100028, Peoples R China |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 |
Long, Zhen,Zhou, Xuebing,Lu, Zhilin,et al. Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation [J]. ENERGY,2022,242:12. |
| APA |
Long, Zhen,Zhou, Xuebing,Lu, Zhilin,&Liang, Deqing.(2022). Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation .ENERGY,242,12. |
| MLA |
Long, Zhen,et al." Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation ".ENERGY 242(2022):12. |
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