Abstract: The invention relates to a gas hydrate dewatering cooling and outputting apparatus which dewaters and solidifies gas hydrate slurry and takes out the solidified gas hydrate under ambient pressure. The apparatus comprises an output apparatus body 31 having a supply port 32 for the gas hydrate slurry on an upper part of a pressure vessel, a screw extruder 33 provided at a lower part inside the output apparatus body 31 and having a drain 37 and an outlet sealing device, and a cooling device 41 which cools the vicinity of the outlet 39 of the screw extruder 33. According to such a construction, slurry gas hydrate can be efficiently and continuously dewatered, cooled and solidified, and gas hydrate powder can be consolidated into blocks and taken out to the atmosphere.

Abstract: It is required to provide a gas hydrate dewatering device which performs dewatering and produces a gas hydrate with a low proportion of included water continuously at high efficiency, under conditions in which the gas hydrate is not decomposed and the water is not frozen into ice. This is achieved by providing a dewatering device (12) for gas hydrate slurry which eliminates the water from a slurry in which gas hydrate is dispersed in water, including a dewatering mechanism of a screw press type within an environment which is maintained at temperature and pressure conditions at which the gas hydrate does not decompose and the water does not freeze.