Study on the Synergistic Properties of Two Nonionic Natural Gas Hydrate Anti-agglomerants Via Rocking Cell Tests
International Journal of Energy and Power Engineering
Volume 6, Issue 6, December 2017, Pages: 84-90
Received: Dec. 5, 2017;
Published: Dec. 6, 2017
Views 1899 Downloads 82
Sanbao Dong, College of Petroleum Engineering, China University of Petroleum (East China), Qingdao, China
Mingzhong Li, College of Petroleum Engineering, China University of Petroleum (East China), Qingdao, China
Chenwei Liu, College of Petroleum Engineering, China University of Petroleum (East China), Qingdao, China
The application of anti-agglomerants (AAs) is becoming attractive due to effectiveness at low dosage and high subcooling. However, limited attention has been paid to the synergism effect between different AAs to increase their performance. In this study, anti-agglomeration performance of single and compounded chemical additives using a sapphire rocking cell is evaluated. The experimental results show that cocamidopropyl dimethylamine (AA) combined with sorbitan monooleate (Span 80) exhibits good anti-agglomeration performance. A compounded anti-agglomeration mechanism, in which Span 80 promotes the dispersion of water droplet in the oil phase before the formation of hydrates and AA prevents the agglomeration of hydrate particles formed from water droplets, is proposed. The physical appearance of the octane/brine/AAs mixtures has been studied and related to the anti-agglomeration performance of the AAs.
Study on the Synergistic Properties of Two Nonionic Natural Gas Hydrate Anti-agglomerants Via Rocking Cell Tests, International Journal of Energy and Power Engineering.
Vol. 6, No. 6,
2017, pp. 84-90.
E. D. Sloan, C. A. Koh, Clathrate Hydrate of Natural Gases; CRC Press: Boca Raton, FL, 2008.
M. A. Kelland, History of the development of low dosage hydrate inhibitors, Energy & Fuels, 2006, 20(3), 825-847.
M. A. Kelland, Production Chemicals for the Oil and Gas Industry; CRC Press: Boca Raton, FL, 2009.
S. Mokhatab, R. J. Wilkens, K. J. Leontaritis, A review of Strategies for solving gas-hydrate problems in subsea pipelines, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2007, 29(1), 39-45.
M. Sun, A. Firoozabadi, G. Chen, C. Sun, Hydrate size measurements in anti-agglomeration at high watercut by new chemical formation, Energy Fuels, 2015, 29(5), 2901-2905.
A. Perrin, O. M. Musa, J. W. Steed, The chemistry of low dosage clathrate hydrate, Chemical Society Review, 2013, 42, 1996-2015.
J. Jeffrey, Inclusion Compounds, vol. 1. Academic Press, 1984, 159-190.
F. M. Mohamed, M. A. Kelland, Tris(tert-heptyl)-N-alkyl-1-ammonium bromides-powerful THF hydrate crystal growth inhibitors and their synergism with poly-vinylcaprolactam kinetic gas hydrate inhibitor, Chemical Engineering Science, 2016, 144, 275-282.
U. C. Klomp, R. Reijnhart, Method for inhibiting the plugging of conduits by gas hydrates, US5879561, 1999.
M. A. Kelland, T. M. Svartaas, J. Øvsthus, T. Tomita, J. Chosa, Studies on some zwitterionic surfactant gas hydrate anti-agglomerants, Chemical Engineering Science, 2006, 61, 4048-4059.
Z. Huo, E. Freer, M. Lamar, B. Sannigrahi, D. M. Knauss, E. D. Sloan, Hydrate plug prevention by anti-agglomeration, Chemical Engineering Science, 2001, 56, 4979-4991.
M. A. Kelland, T. M. Svartaas, J. Øvsthus, T. Tomita, K. Mizuta, Studies on some alkylamide surfactant gas hydrate anti-agglomerants, Chemical Engineering Science, 2006, 61, 4290-4298.
J. D. York, A. Firoozabadi, Alcohol cosurfactants in hydrate antiagglomeration, Journal of Physical Chemistry B, 2008, 112, 10445-10465.
X. Wang, H. Qin, Q. Ma, Z. Sun, K. Yan, Z. Song, K. Guo, D. Liu, G. Chen, C. Sun, Hydrate antiagglomeration performance for the active components extracted from a terrestrial plant fruit, Energy Fuels, 2017, 31(1), 287-298.
M. Sun, A. Firoozabadi, New surfactant for hydrate anti-agglomeration in hydrocarbon flowlines and seabed oil capture, Journal of Colloid and Interfacial Science, 2013, 402, 312-319.
S. Dong, A. Firoozabadi, Hydrate anti-agglomeration and synergy effect in normal octane at varying water cuts and salt concentrations, The Journal of Chemical Thermodynamics, 2017 (accepted).
K. Yan, C. Sun, J. Chen, L. Chen, D. Shen, B. Liu, M. Jia, M. Niu, Y. Lv, N. Li, Z. Song, S, Niu, G. Chen, Flow characteristics and rheological properties of natural gas hydrate slurry in the presence of AA in a flow loop apparatus, Chemical Engineering Science, 2014, 106, 99-108.
J. Chen, C. Sun, B. Peng, B. Liu, S. Si, M. Jia, L. Mu, K. Yan, G. Chen, Screening and compounding of gas hydrate anti-agglomerants from commercial additives through morphology observation, Energy Fuels, 2013, 27(5), 2488-2496.
R. Ambekar, Equilibrium conditions of hydrate-forming pickering emulsions (M. S. thesis), City University of New York, New York, NY, 2012.
C. Liu, M. Li, G. Zhang, C. A. Koh, Direct measurements of the interactions between clathrate hydrate particles and water droplets, Physical Chemistry Chemical Physics, 2015, 17, 20021-20029.
J. Emsley, Very strong hydrogen bonding, Chemical Society Reviews, 1980, 9, 91-124.