Mitsubishi Heavy Industries Limited

Mitsubishi Jukogyo Kabushiki Kaisha

Other

Osaka Gas Company Limited

Yuichi Fujioka

Toshihiko Setoguchi

Yoshihiko Tsuchiyama

Toshimitsu Ichinose

Shigeyasu Ishigami

Akinori Yasutake

Fumiya Nakashima

Satoshi Uchida

Yoshinori Kobayashi

Norihisa Kobayashi

Kimishiro Tokuda

Katsuhiko Shinoda

Kenji Tagashira

Kikuo Tokunaga

Toshiaki Ohkubo

Akira Hashimoto

Isao Mochida

Shozo Kaneko

Ryoichi Nishida

Hitoshi Nishino

Akira Hattori

Katsuhide Okimi

Keisuke Sonoda

Katsuyuki Ueda

Susumu Miki

Masahiko Ozaki

Osamu Tsukamoto

Yoshiyuki Wakabayashi

Masashi Hishida

Yasuo Katsuki

Takashi Ohnishi

Tokuda Kimishiro

Akihiro Hachiya

Matsuhei Noda

Seong-Ho Yoon

Kazuya Suenaga

The present invention is provided with a reaction apparatus () that supplies carbon raw material () and fine particles () to cause carbon nanofibers to grow on surfaces of the fine particles (), a heating apparatus () that heats the reaction apparatus, a recovery line () that recovers fine particles on which the carbon nanofibers have grown from the reaction apparatus, and a carbon nanofiber separating apparatus () that separates carbon nanofibers () from the recovered fine particles on which carbon nanofibers have been grown.

Producing method and apparatus of carbon nanofibers

A carbon nano-fibrous rod including a predetermined number of hexagonal carbon layers extending in one direction, and a fibrous nanoncarbon which includes a plurality of the carbon nano-fibrous rods three-dimensionally gathered are disclosed.

Carbon nano-fibrous rod, fibrous nanocarbon, and method and apparatus for producing fibrous nanocarbon

The invention has as an object proving a carbon nanomaterial fabrication method that can continuously mass-produce a high purity carbon a nanomaterial. The tube-shaped or fiber-shaped carbon nanomaterial having carbon as the main constituent is fabricated with a compound that includes carbon (raw material) and an additive that includes a metal by using a fluidized bed reactor.

Manufacturing method for a carbon nanomaterial, a manufacturing apparatus for a carbon nanomaterial, and manufacturing facility for a carbon nanomaterial

Device for eliminating particulates in exhaust gas and method for eliminating the particulates

CaS oxidation has CaS particles oxidized into CaSO completely as far as to the interior of the particle. The interior of an oxidation apparatus is partially partitioned by a partition to thereby form a first fluidized bed on the inner side, a second fluidized bed on the outer side and a space portion thereabove. A heat exchanger having a baffle plate is disposed on the inner side of the partition and an in-bed heat exchanger is disposed on the outer side of same. A desulfurizing product-containing fine powder and coarse powder and a mixture gas of nitrogen, oxygen and steam are supplied into the second fluidized bed . Also, coal and coal char are supplied into the first fluidized bed from below. Of the particles oxidized in the second fluidized bed and supplied into the first fluidized bed from below with the flow of a mixture gas , the fine powder entrains into the space portion as entrained particles and a major part thereof falls down into the second fluidized bed as particles . The completely oxidized particles are discharged as discharged ash and entrained ash

Calcium sulfide oxidation method and apparatus

CaS oxidation has CaS particles oxidized into CaSO,completely as far as to the interior of the particle. The interior of an oxidation apparatus,is partially partitioned by a partition,to thereby form a first fluidized bed,on the inner side, a second fluidized bed,on the outer side and a space portion,thereabove. A heat exchanger,having a baffle plate is disposed on the inner side of the partition,and an in-bed heat exchanger,is disposed on the outer side of same. A desulfurizing product-containing fine powder,and coarse powder,and a mixture gas,of nitrogen, oxygen and steam are supplied into the second fluidized bed,. Also, coal,and coal char,are supplied into the first fluidized bed,from below. Of the particles,oxidized in the second fluidized bed,and supplied into the first fluidized bed,from below with the flow of a mixture gas,, the fine powder entrains into the space portion,as entrained particles,and a major part thereof falls down into the second fluidized bed,as particles,. The completely oxidized particles are discharged as discharged ash,and entrained ash

Calcium sulfide oxidation method

This invention relates to a method for decreasing sulfuric acid and sulfuric anhydride present in combustion exhaust gas which comprises adding an SO,-decreasing agent (hydrogen gas) to combustion exhaust gas and thereby reducing sulfuric acid (H,SO,) and sulfuric anhydride (SO,) present in the combustion exhaust gas, as well as a combustion exhaust gas flow system therefor. Thus, this invention provides a method for decreasing sulfuric acid and sulfuric anhydride present in combustion gas which can prevent the occurrence of troubles (e.g., low-temperature corrosion and ash deposition) arising from H,SO,and S,contained in combustion gas.

Method for decreasing sulfuric acid and sulfuric anhydride present in combustion exhaust gas

A dust collecting apparatus and method for dedusting a Ca-containing gas using a ceramics filter is provided, in which a filter differential pressure elevation rate is suppressed. A desulferizing agent,and a mineral,containing MgO are supplied via a hopper,a valve,and a feeder,into a pressurized fluidized-bed combustion furnace,together with coal,and air,. A combustion gas,is dedusted by a cyclone,to become a combustion gas,, the combustion gas,enters a filter container,having a ceramics filter,and is further dedusted. A combustion gas,which is dedusted is supplied into a gas turbine,to generate power, and combustion gas,heats a waste heat recovery boiler,which in turn drives a steam turbine,. The mineral,containing MgO is added in the combustion gas,which flows in the ceramics filter,. Thereby MgO is added to the combustion gas so that the filter differential pressure elevation rate can be suppressed. The more MgO that is supplied, the greater the effect becomes, and an operation stop due to the differential pressure elevation is eliminated.

Dust collecting method

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

In a coal gasification power generator, coal gas 500 obtained by gasifying a coal 100 by a gasifying furnace is introduced into a desulfurization furnace in which the coal gas 500 is desulfurized by limestone 400. A coal gas 501 after desulfurization is burned by a combuster 5 after it has passed through a dust removing unit 3 so that high temperature combustion gas 800 is supplied to a gas turbine. The gas turbine 7 drives a power generating unit. Exhaust gas 801 from the gas turbine is supplied to an exhaust gas boiler 8. Char 60a produced in the gasifying furnace and limestone 60b containing CaS emitted from the desulfurization furnace are burned in an oxidation furnace, and by using the resultant combustion gas, water vapor introduced from the exhaust gas boiler 8 is heated by a heat exchanger, and thereafter it is supplied to the gasifying furnace as a gas. With the above construction, chemical energy possessed by the coal is effectively converted into electric energy, and also the rate of desulfurization of coal gasifying gas is improved thereby reducing emitted sulfur oxide.

Coal gasification power generator

In a coal gasification power generator, a coal gas 500 obtained by gasifying coal 100 by a gasifying furnace 1 is introduced into a desulfurization furnace 2 in which the coal gas 500 is desulfurized by limestone 400. A coal gas 501 after desulfurization is burned by a combuster 5 after it has passed through a dust removing unit 3 so that a high temperature combustion gas 800 is supplied to a gas turbine 7. The gas turbine 7 drives a power generating unit. An exhaust gas 801 from the gas turbine 7 is supplied to an exhaust gas boiler 8. A char 60a produced in the gasifying furnace 1 and limestone 60b containing CaS emitted from the desulfurization furnace 2 are burned in an oxidation furnace 4, and by using the resultant combustion gas, water vapor 30a introduced from the exhaust gas boiler 8 is heated by a heat exchanger 10, and thereafter it is supplied to the gasifying furnace 1 as a gas 700. With the above construction, chemical energy possessed by the coal 100 is effectively converted into electric energy, and also the rate of desulfurization of coal gasifying gas is improved thereby reducing emitted sulfur oxide.

Fuel, desulfurizing agent and air are fed into a fluidized bed gasification furnace so that part of the fuel is gasified. The produced combustible gas is led into a combustor. Residual fuel not gasified within the fluidized bed gasification furnace is led to a fluidized bed combustion furnace jointly with the desulfurizing agent to burn it with air fed separately to the combustion furnace. Then produced combustion gas is led into the combustor, in which the combustible gas is burnt with the combustion gas and air fed seperately to the combustor. The amounts of air fed to the respective furnaces and the combustor are individually regulated. A gasifying power generation method includes, in addition to the abovementioned steps of the gasifying combustion method, the steps of driving a gas turbine by the combustion gas produced by the combustor, driving a steam turbine by steam generated by the combustion gas, and rotating electric generators by the respective turbines to carry out power generation.

Gasifying combustion method and gasifying power generation method

Growing community of inventors

Nagasaki, Japan

Yuichi Fujioka