Patent ID: 8231708

Claim:
A method for producing gas hydrate through molding a powdery gas hydrate into pellets thereof using a granulation apparatus in a non-reacted gas, which pellets then being carried out to a storage tank under atmospheric pressure, comprising the steps of: charging said non-reacted gas into a slurry tank; charging said pellets into the slurry tank filled with the non-reacted gas; charging a slurry mother liquid into the slurry tank holding the charged pellets to return the non-reacted gas in the slurry tank to said granulation apparatus; manipulating a valve of a slurry transfer pipe attached to said slurry tank to release internal pressure of the slurry tank; and charging the depressurized non-reacted gas into the slurry tank after releasing the internal pressure, pushing the pellets in the slurry tank into said slurry transfer pipe together with the slurry mother liquid, and simultaneously supplying the slurry mother liquid to said slurry tank to dilute the concentration of the slurry.