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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/20396
Title: Natural Gas Hydrate Formation Using Saline/Seawater for Gas Storage Application
Authors: Veluswamy, Hari Prakash
Linga P.
Published in: Energy and Fuels
Abstract: Solidified natural gas (SNG) technology is regarded as the safest, cost-effective, and environmentally benign mode of natural gas storage suited for long-term and large-scale applications. Key challenges barricading the commercial exploitation of this technology include the formation kinetics and storage stability. In this study, we investigate the macroscopic kinetics of mixed natural gas hydrate formation using a C1 (93%)-C2 (5%)-C3 (2%) gas mixture along with a tetrahydrofuran promoter in the presence of saline water and seawater. The main objective is to examine the effect of the presence of salt (NaCl) in influencing the natural gas hydrate formation kinetics. Experiments were performed to study the effect of the pressure (driving force) on the mixed natural gas hydrate formation kinetics with the presence of 3 wt % NaCl (saline water) and actual seawater (2.72 wt % salinity) in an unstirred reactor configuration. The presence of salt (3 wt % NaCl) significantly retards the mixed natural gas hydrate formation kinetics, resulting in a slower rate of hydrate formation, reduced gas uptake (15.6% drop), and delay in the time taken for completion of hydrate formation (about 3.8 times longer). The plausibility of the improvement in kinetics of mixed natural gas hydrate formation with saline water in the presence of leucine and tryptophan amino acids (kinetic promoters) was also examined in this study. Leucine amino acid has shown the potential to improve the kinetics of mixed natural gas hydrate formation in saline water. © 2021 American Chemical Society.
Citation: Energy and Fuels, 35(7): 5988-6002
URI: https://doi.org/10.1021/acs.energyfuels.1c00399
http://repository.iitr.ac.in/handle/123456789/20396
Issue Date: 2021
Publisher: American Chemical Society
Keywords: Amino acids
Cost effectiveness
Gases
Hydration
Kinetics
Natural gas
Natural gas substitutes
Seawater effects
Sodium chloride
Commercial exploitation
Environmentally benign
Formation kinetics
Large-scale applications
Macroscopic kinetics
Natural gas storage
Reactor configuration
Storage stability
Gas hydrates
ISSN: 8870624
Author Scopus IDs: 55603750900
57189447961
Author Affiliations: Veluswamy, H.P., Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117 585, Singapore, Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India
Linga, P., Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117 585, Singapore
Funding Details: The authors acknowledge the funding support from MoE AcRF Tier 1 (R-279-000-542-114) and the National University of Singapore. National University of Singapore, NUS; Ministry of Education - Singapore, MOE: R-279-000-542-114
Corresponding Author: Veluswamy, H.P.; Department of Chemical and Biomolecular Engineering, Singapore; email: hariprakashv@ch.iitr.ac.in Linga, P.; Department of Chemical and Biomolecular Engineering, Singapore; email: praveen.linga@nus.edu.sg
Appears in Collections:Journal Publications [CH]

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