METHOD AND APPARATUS FOR DECOMPOSING METHANE HYDRATE BY NITROGEN

摘要

PROBLEM TO BE SOLVED: To provide a method and apparatus for decomposing methane gas hydrate by feeding a readily feedable and stable medium existing in large amounts to methane gas hydrate. SOLUTION: The method and the apparatus for decomposing methane gas hydrate and taking out methane gas comprise feeding nitrogen into the methane gas hydrate which is stabilized in a phase equilibrium state to shift the methane gas hydrate into a decomposition area and carrying out decomposition reaction of the methane gas hydrate and recovering the methane gas, in the method for taking out methane gas by decomposing the methane gas hydrate kept in low-temperature and high-pressure conditions. COPYRIGHT: (C)2006,JPO&NCIPI