Anti-Agglomeration Effects of Biodegradable Surfactants from Natural Sources on Natural Gas Hydrate Formation

被引:17
作者
Kang, Seong-Pil [1 ]
Lee, Dongwon [2 ]
Lee, Jong-Won [2 ]
机构
[1] Korea Inst Energy Res, Climate Change Res Div, 152 Gajeong Ro, Daejeon 34129, South Korea
[2] Kongju Natl Univ, Dept Environm Engn, 1223-24 Cheonan Daero, Cheonan Si 31080, Chungnam, South Korea
关键词
gas hydrates; hydrate inhibitors; anti-agglomerants; lecithin; lanolin; AQUEOUS ETHYLENE-GLYCOL; PHASE-EQUILIBRIA; IONIC LIQUID; INHIBITION; METHANE; PERFORMANCE;
D O I
10.3390/en13051107
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Kinetic hydrate inhibitors (KHI) and anti-agglomerants (AA) rather than thermodynamic hydrate inhibitors (THI) are often used for flow assurance in pipelines. This is because they require much lower dosages than thermodynamic inhibitors. Although the hydrate-phase equilibria are not affected, KHI and AA prevent the formed hydrate crystals from growing to a bulky state causing pipeline blockage. However, these KHIs might have huge environmental impact due to leakages from the pipelines. In this study, two biodegradable AA candidates from natural sources (that is, lecithin and lanolin) are proposed and their performances are evaluated by comparing them with and without a conventional AA (Span 80, sorbitan monooleate). At 30% and 50% water cut, the addition of AA materials was found to enhance the flow characteristics substantially in pipelines and hardly affected the maximum value of the rotational torque, respectively. Considering the cost-effective and environmental advantages of the suggested AA candidates over a conventional AA such as Span 80, the materials are thought to have potential viability for practical operation of oil and gas pipelines. However, additional investigations will be done to clarify the optimum amounts and the action mechanisms of the suggested AAs.
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页数:11
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