Patent ID: 8043579
Filing Date: 2011-10-25
Classification: C10L

Abstract:
1. A gas-hydrate dewatering unit for introducing a gas hydrate formed by reacting a gas with water into a dewatering tower together with unreacted water, for elevating the gas hydrate upward from the bottom of the dewatering tower, and for causing the unreacted water to flow, during the elevation, outside the dewatering tower through a filtration part provided to a side wall surface of the tower, the gas-hydrate dewatering unit characterized by comprising: a pressure-tolerable container; a dewatering tower having a double cylindrical structure comprising an inner cylinder and an outer cylinder concentrically arranged outside the inner cylinder and having a diameter larger than a diameter of the inner cylinder, the dewatering tower being built in the pressure-tolerable container, a first circular filtration body being provided in a side wall surface of the inner cylinder and a second circular filtration body being provided in a side wall surface of the outer cylinder, respectively, said filtration bodies being arranged to cause the unreacted water to flow out of the dewatering tower through the filtration bodies; a cylindrical gas-hydrate input part provided in a cavity in the center of the dewatering tower; a drainage tank formed between the gas-hydrate input part and the pressure-tolerable container; a crushing unit for crushing a gas hydrate provided in the gas-hydrate input part; a gas-hydrate discharging unit provided below the gas-hydrate input part; a scraper formed by a plurality of blades extending radially from a rotation shaft and rotatably provided above the dewatering tower; a slurry-supplying pipe provided to a lower portion of the dewatering tower; and a drainage pipe is provided to the drainage tank.