Device for revaporizing natural gas

A device for revaporizing natural gas, the device being configured to revaporize natural gas hydrate pellets, the device comprising:

• (i) a pellet charging portion configured to have the pellets charged therein and having an upper valve and a lower valve formed therein so as to divide a pressure adjusting space;
• (ii) a storing portion communicating with a lower portion of the pellet charging portion and configured to have the pellets flowed therein when the lower valve is opened and have the pellets in flow therefrom when a water level of heating water is dropped below a lower portion of the storing portion;
• (iii) a transfer screw having one end thereof coupled with the lower portion of the storing portion and configured to transfer the pellets in the storing portion;
• (iv) a dissolving reaction tub coupled to the other end of the transfer screw and having the pellets flowed in from a lower portion thereof and having heating water accommodated therein;
• (v) a pressure adjusting valve configured to open and close communication between the pressure adjusting space and the storing portion;
• and
• (vi) a pressurized water supply portion configured to supply pressurized water to the pressure adjusting space to return high-pressure gas in the pressure adjusting space back to the storing portion and recover the supplied pressurized water;
• wherein the pressurized water supply portion comprises:
• (a) an atmospheric pressure tank being in an atmospheric pressure state and configured to have the pressurized water recovered thereto;
• (b) a high-pressure tank having high-pressure gas and pressurized water stored therein and configured to supply the pressurized water to the pressure adjusting space;
• and
• (c) a pump configured to supply the pressurized water in the atmospheric pressure tank to the high-pressure tank.