A Apparatus for Desalination by Producing Gas-Hydrate or Clathrate and Method thereof

摘要

A new desalination system and a new desalination method are provided to efficiently separate components such as salt or contaminants from a slurry column in which a mixture of seawater and gas is formed and recycle the recovered heat value in the gas/water separation process by recovering a heat value generated from the gas-hydrate generation process in a method for desalination of seawater through a gas-hydrate generation process. A system for desalination of seawater comprises: a slurry column(10) having a fractionation apparatus(11) installed therein to fractionate components contained in seawater by stages and a seawater pipe(13) for heat exchange installed on an inner wall thereof, wherein the seawater pipe for heat exchange has a coil structure so that seawater is heated by calorific value of a gas-hydrate, and the gas-hydrate is generated in a lower part of the slurry column and moves to an upper part of the slurry column; a seawater/gas mixer(20) which is installed on a lower portion of the slurry column, and into which seawater and gas flow so as to generate a seawater/gas mixed slurry; a gas saturator(30) for saturating gas into seawater and injecting the saturated gas into the seawater/gas mixer; a heat exchanger(40) for dissociate the gas-hydrate flown in from the slurry column into gas and water; and a gas-water separator(50) for separating the gas and water dissociated by the heat exchanger.