Mitsubishi Jukogyo Kabushiki Kaisha

Keisuke Sonoda

Yoshinori Kobayashi

Kimishiro Tokuda

Fumiya Nakashima

Masahiko Ozaki

Osamu Tsukamoto

Yuichi Fujioka

Toshiyuki Takegawa

Koetsu Asai

Hiroshi Kikuchi

Masao Komatsu

Takaharu Toyoda

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

An improvement of a coal firing device applied to coal gasifiers, boilers for power generation, etc. On the inner walls of a ceiling portion (4) of a firing furnace (3) and of a throat portion (2) thereabove, and of a diffuser portion (6) further thereabove, where necessary, plate-like vortex breaker(s) (1A, 1B) is/are provided. Vortex flow of gas in the vicinity of the inner wall surface around the throat portion (2) is thereby weakened and molten slag sticking on the wall surface is suppressed to be pushed up by the gas. There occurs neither staying of molten slag at the diffuser portion (6) nor scattering of slag, and blockade of furnace due to solid-phase slag does not occur.

Coal firing device

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

In order to stably maintain a combustion capability in a combustion furnace for coal gassification, it is necessary to exhaust molten slag produced within the furnace without the slag stagnating. The present invention provides, in a combustion furnace for coal gassification, a slag exhausting device which is configured in such a manner that the cooling of molten slag being exhausted from the furnace is minimized to prevent the slag from solidifying and causing other slag to stagnate. The slag exhausting device is disposed at the center of a bottom wall of the combustor, and has a lower cylindrical portion and an upper bank opening upwardly and flared at an angle of 300.degree.-45.degree.. The height H from the bottom wall to the top of the upper bank, a height L and an inner diameter ds of the cylindrical lower portion and a diameter D of the combustor are set to satisfy the relations of ds/D=0.2-0.4, L/ds=0.2-0.6 and H/D=0.05-0.15.

Coal combustor and slag exhausting device therein

Growing community of inventors

Nagasaki, Japan

Keisuke Sonoda