Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 16, Issue 4, Pages 551-555Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2010.03.023
Keywords
Methane hydrate; MWCNTs; Natural gas; Equilibrium; Subcooling
Funding
- Ministry of Education, Science and Technology [R01-2008-000-20575-0]
- Ministry of Education and Human Resources Development
- National Research Foundation of Korea [R01-2008-000-20575-0, 2008-0061213, 과06B2406] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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1 m(3) of methane hydrate can be decomposed into a maximum of 216 m(3) of methane gas under standard conditions. If these characteristics of hydrates are utilized in the opposite sense, natural gas can be fixed into water in the form of a hydrate solid. Therefore, the use of hydrates is considered to be a great way to transport and store natural gas in large quantities. However, when methane hydrate is formed artificially, the amount of gas that is consumed is relatively low, due to the slow reaction rate between water and methane gas. Therefore, for practical purposes in the application, the present investigation focuses on increasing the rate of formation of the hydrate and the amount of gas consumed by adding multi-walled carbon nanotubes (MWCNTs) to pure water. The results show that when 0.004 wt% of multi-walled carbon nanotubes was added to pure water, the amount of gas consumed was about 300% higher than that in pure water and the hydrate formation time decreased at a low subcooling temperature. (C) 2010 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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