Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation
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 is...
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ftchacadsciegiec:oai:ir.giec.ac.cn:344007/36493 2023-12-24T10:18:34+01:00 Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation Long, Zhen Zhou, Xuebing Lu, Zhilin Liang, Deqing 2022-03-01 http://ir.giec.ac.cn/handle/344007/36493 https://doi.org/10.1016/j.energy.2021.123056 英语 eng PERGAMON-ELSEVIER SCIENCE LTD ENERGY http://ir.giec.ac.cn/handle/344007/36493 doi:10.1016/j.energy.2021.123056 Kinetic hydrate inhibitors (KHIs) Poly (N-vinyl caprolactam)-co-isopropylacrylamide) (PVCap-co-NIPAM) Subcooling Growth Micro-structure AMPHIPHILIC BLOCK-COPOLYMERS MONOETHYLENE GLYCOL KINETIC INHIBITION GAS VINYLCAPROLACTAM AGGLOMERATION DISSOCIATION POLYMERS ENERGY WATER Thermodynamics Energy & Fuels 期刊论文 2022 ftchacadsciegiec https://doi.org/10.1016/j.energy.2021.123056 2023-11-24T01:15:45Z 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. Report Methane hydrate Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR Energy 242 123056 |
institution |
Open Polar |
collection |
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences: GIEC OpenIR |
op_collection_id |
ftchacadsciegiec |
language |
English |
topic |
Kinetic hydrate inhibitors (KHIs) Poly (N-vinyl caprolactam)-co-isopropylacrylamide) (PVCap-co-NIPAM) Subcooling Growth Micro-structure AMPHIPHILIC BLOCK-COPOLYMERS MONOETHYLENE GLYCOL KINETIC INHIBITION GAS VINYLCAPROLACTAM AGGLOMERATION DISSOCIATION POLYMERS ENERGY WATER Thermodynamics Energy & Fuels |
spellingShingle |
Kinetic hydrate inhibitors (KHIs) Poly (N-vinyl caprolactam)-co-isopropylacrylamide) (PVCap-co-NIPAM) Subcooling Growth Micro-structure AMPHIPHILIC BLOCK-COPOLYMERS MONOETHYLENE GLYCOL KINETIC INHIBITION GAS VINYLCAPROLACTAM AGGLOMERATION DISSOCIATION POLYMERS ENERGY WATER Thermodynamics Energy & Fuels Long, Zhen Zhou, Xuebing Lu, Zhilin Liang, Deqing Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation |
topic_facet |
Kinetic hydrate inhibitors (KHIs) Poly (N-vinyl caprolactam)-co-isopropylacrylamide) (PVCap-co-NIPAM) Subcooling Growth Micro-structure AMPHIPHILIC BLOCK-COPOLYMERS MONOETHYLENE GLYCOL KINETIC INHIBITION GAS VINYLCAPROLACTAM AGGLOMERATION DISSOCIATION POLYMERS ENERGY WATER Thermodynamics Energy & Fuels |
description |
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. |
format |
Report |
author |
Long, Zhen Zhou, Xuebing Lu, Zhilin Liang, Deqing |
author_facet |
Long, Zhen Zhou, Xuebing Lu, Zhilin Liang, Deqing |
author_sort |
Long, Zhen |
title |
Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation |
title_short |
Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation |
title_full |
Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation |
title_fullStr |
Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation |
title_full_unstemmed |
Kinetic inhibition performance of N-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation |
title_sort |
kinetic inhibition performance of n-vinyl caprolactam/isopropylacrylamide copolymers on methane hydrate formation |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
2022 |
url |
http://ir.giec.ac.cn/handle/344007/36493 https://doi.org/10.1016/j.energy.2021.123056 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
ENERGY http://ir.giec.ac.cn/handle/344007/36493 doi:10.1016/j.energy.2021.123056 |
op_doi |
https://doi.org/10.1016/j.energy.2021.123056 |
container_title |
Energy |
container_volume |
242 |
container_start_page |
123056 |
_version_ |
1786207605232762880 |