GAS RECOVERY DEVICE AND GAS RECOVERY METHOD FROM WATER BOTTOM METHANE HYDRATE

PROBLEM TO BE SOLVED: To enhance gas recovery efficiency or cost efficiency in recovering gas from methane hydrate at a water bottom.SOLUTION: The present invention relates to a gas recovery device 10 which gasifies and recovers methane hydrate H at a sea bottom 20, the gas recovery device 10 comprising: a first chamber body 12 such that slurry including the methane hydrate H can be put in a chamber; an underwater holding mechanism part 14 which locates the first chamber body 12 in water; a slurry introduction part 38 which sends mixed slurry 36 including the methane hydrate H at the sea bottom 20 and water bottom deposits S into the first chamber body 12; a gas outlet part 26 for gas from in the first chamber body 12; and a slurry guide-out part 42 which sends deposit slurry 40 including mainly the water bottom deposits S to the water bottom 20 from in the first chamber body 12.SELECTED DRAWING: Figure 1 【課題】水底に在るメタンハイドレートからガスを回収する際の、ガス回収効率またはコスト効率を高めること。【解決手段】水底２０に在るメタンハイドレートＨをガス化して回収するガス回収装置１０であって、室内にメタンハイドレートＨを含むスラリーを入れることが可能な第１室体１２と、第１室体１２を水中に位置させる水中保持機構部１４と、第１室体１２内に水底２０に在るメタンハイドレートＨと水底堆積物Ｓを含む混合スラリー３６を送るスラリー導入部３８と、第１室体１２内からのガス取り出し部２６と、第１室体１２内から主として水底堆積物Ｓを含む堆積物スラリー４０を水底２０に送るスラリー導出部４２と、を備えることを特徴とするガス回収装置１０。【選択図】図１