天然ガスハイドレートの製造・輸送プロジェクト(<特集>RGB 三部会[リサイクル・ガス化・バイオマス]合同シンポジウム-廃棄物,バイオマス,石炭等利用技術の最新動向-)

概要

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Natural Gas Hydrate (NGH) is a chemical compound where natural gas (guest molecule) is trapped within a cage composed of water molecule (host molecule), and is being expected to be a new medium of transporting natural gas economically and safely, as it can be stabilized under atmospheric pressure at only minus 20 degree Celsius. This demonstration study is to verify NGH production, transportation, storage, gasification and utilization as its land transportation supply chain. In order to produce NGH pellets, NGH production demo plant whose capacity is 5 tons of NGH pellets per day has been built in Yanai Power Station of Chugoku Electric Power Co., Inc, which is one of the LNG receiving terminals in the west side of Japan. In the production, LNG, multi-component mixed gas is used for feed gas, and untapped LNG cold heat at the terminal is used for cooling system of the production plant. After the production, NGH pellets are delivered to two different gas users (one is the co-generation gas engine and the other is a households use trend). In order to transport and store the produced NGH pellets, two types of pellet containers have been developed. In conclusion, the production capacity and the effectiveness of NGH land transportation system as a new supply chain of natural gas have been confirmed.
2012-12-20