Method of dewatering gas hydrate and apparatus therefor

Abstract

A gas hydrate slurry dewatering apparatus adapted to feed a raw as into a cylindrical main body of dewatering column so gas to attain pressuriation and so suction any gas from the interior of a drainage chamber disposed around the cylindrical main body so as to attain depressurization. An internal tube () as a constituent of a dewatering apparatus () in which the gas hydrate slurry (S) is introduced is provided with a separating section (). A drainage chamber () is formed by the internal tube () and, disposed with a given spacing therefrom, an external tube (). An exhaust blower (B) and a drainage pump (P) are connected to the drainage chamber (). A gas feed blower (B) for a raw gas (G) is connected to the internal tube (). A differential pressure detector (x) is provided for detecting any pressure difference between the interior of the internal tube () and the interior of the drainage chamber (). Control of the exhaust blower (B) and/or the gas feed blower (B) is performed by the signal from the differential pressure detector (x).