Mitsubishi Jukogyo Kabushiki Kaisha

Mitsubishi Heavy Industries Limited

Masahiko Ozaki

Keisuke Sonoda

Osamu Tsukamoto

Makoto Ohta

Yuichi Fujioka

Koetsu Asai

Naoji Toki

Hiroshi Kikuchi

Masao Komatsu

Junichi Minamiura

The present invention relates to a large floating structure used for a marine airport and the like and, more particularly, to a large floating structure in which the large floating structure itself has a wave absorbing function, whereby the need for a breakwater etc. is eliminated, and the installation of a separate wave absorbing structure at the outer periphery of the large floating structure is not needed, whereby an upper deck can be utilized effectively. For this purpose, under an extending portion on the up-wave side of the upper deck of large floating structure, for example, many box-shaped floating bodies arranged in a zigzag form and lattice-shaped connecting members are provided as a wave absorbing structure depending from the extending portion.

Wave-absorbing type large floating structure

A CO.sub.2 deep sea throw-away system includes a floating offshore base (2), receiving liquefied CO.sub.2 carried by a liquefied CO.sub.2 carrier (1). The base has a throwing pipe (3) and a throwing pipe outlet (4) to deliver the liquified CO.sub.2 in an enclosing bag (11) in the sea at a depth where a liquid phase state of the liquified CO is maintained. An unmanned submersible working boat (10) is provided and has a plurality of capsules (26) mounted thereon. Each capsule contains an enclosing bag (11) to enclose the liquified CO.sub.2. The boat transports the capsules into the sea at a depth where a liquid phase state of the liquified CO.sub.2 is maintained and operates to enclose the liquified CO.sub.2 in the enclosing bags (11). The liquified CO.sub.2 in the enclosing bag (11) and the capsule (26) are then released so as to fall onto the sea bottom. Also, a control base (9) is provided on the offshore sea to control the unmanned submersible working boat (10).

CO.sub.2 sea bottom throw-away system

A liquefied carbonated gas abyssal casting apparatus prevents freezing at an outlet of a casting tube and flotation of cast carbonated gas. The liquefied carbonated gas is fed from a reservoir to a single casting tube and discharged to the abyss through an inner tube of a double casting tube from a lower end of the single casting tube. A heat medium fluid is recirculated between the inner tube and an outer tube of the double casting tube. The liquefied carbonated gas which flows through the inner tube is heated to an abyssal temperature of from -1.degree. to 5.degree. C.

Abyssal casting apparatus for liquefied carbonated gas

Growing community of inventors

Nagasaki, Japan

Masahiko Ozaki