Gas: heating and illuminating – Methane -containing product – or treatment or recovery process
Reexamination Certificate
2011-08-02
2011-08-02
Handal, Kaity V. (Department: 1723)
Gas: heating and illuminating
Methane -containing product, or treatment or recovery process
C048S1970FM, C048S127500, C585S015000, C532S001000
Reexamination Certificate
active
07988750
ABSTRACT:
The present invention relates to a method for recovering methane gas by adding a gas mixture containing N2and CO2gases to natural gas hydrate and reacting them. The method for recovering methane gas from natural gas hydrate of the present invention comprises the step of replacing CH4gas in natural gas hydrate with a gas mixture containing N2and CO2gases by adding the gas mixture to the natural gas hydrate. The method for recovering methane gas of the invention assures a recovery rate of CH4gas much higher than prior art method without dissociating natural gas hydrate layer and utilization of flue gas as a gas mixture containing N2and CO2gases, which makes possible its practical application for the production of natural gas in terms of economy and environmental protection.
REFERENCES:
patent: 4440634 (1984-04-01), Mitchell
patent: 2001/0052288 (2001-12-01), Lee et al.
patent: 2006/0060356 (2006-03-01), Graue et al.
Gunn et al., “Towards Improved Ground Models for Slope Instability . . . ” Terra Nova 14:443-450, 2002.
Kvenvolden K., “A Review of the Geochemistry of Methane in Natural Gas Hydrate” Org. Geochem. 11/12:997-1008, 1995.
Lee et al., “Methane Hydrates Potential as a Future Energy Source” Fuel Processing Technology 71:181-186, 2001.
Lee et al., “Recovering Methane from Solid Methane Hydrate with Carbon Dioxide” Angew. Chem. Int. Ed. 42:5048-5051, 2003.
Lelieveld et al., “Indirect Chemical Effects of Methane on Climate Warming” Letter to Nature 355:339-342, 1992.
Milkov et al., “Economic Geology of Offshore Gas Hydrate Accumulations and Provinces” Marine and Petroleum Geology 19:1-11, 2002.
Sloan E., “Fundamental Principles and Applications of Natural Gas Hydrates” Nature 426:353-359, 2003.
Kim Do-youn
Lee Huen
Park Young-June
Fish & Richardson P.C.
Handal Kaity V.
Korea Advanced Institute of Science and Technology
LandOfFree
Method for recovering methane gas from natural gas hydrate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for recovering methane gas from natural gas hydrate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for recovering methane gas from natural gas hydrate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2627285