Hitachi, Ltd.

Babcock-hitachi Kabushiki Kaisha

Babcock-hitachi K.k.

Toppan Printing Co., Ltd.

Oki Electric Industry Co., Ltd.

Sony Corporation

Showa Denko K.k.

Tetra Laval Holdings & Finance S.a.

Takata Corporation

Mitsubishi Hitachi Power Systems, Ltd.

Showa Highpower Co., Ltd.

Hitachi Babcock Kabushiki-kaisha

Mitsubishi Heavy Industries Limited

Masayuki Taniguchi

Hirofumi Okazaki

Hironobu Kobayashi

Kenji Kiyama

Kenji Yamamoto

Michio Kuroda

Kouji Kuramashi

Shigeru Azuhata

Kiyoshi Narato

Akira Baba

Tadayoshi Murakami

Toshikazu Tsumura

Takanori Yano

Hisayuki Orita

Shigeki Morita

Norio Arashi

Yoshitaka Takahashi

Kenichi Sohma

Yasuo Yoshii

Tsuyoshi Shibata

Yoshiharu Hayashi

Akihito Orii

Noriyuki Hayashi

Kazuya Yabusa

Yuki Kamikawa

Masaki Sato

Osamu Ito

Shin Tamata

Nobuyuki Iizuka

Isao Sato

Atsushi Ikeno

Yoji Ishibashi

Hideki Yamamoto

Shuichi Kanno

Kazuyoshi Irie

Koji Kuramashi

Yasutaka Komatsu

Miki Shimogori

Kenichi Ochi

Takeo Kato

Hideo Kikuchi

Norio Kondo

Hiroshi Umeyama

Tetsuo Aizawa

Kazumi Yasuda

Toshibumi Imai

Yasuhiko Ootawara

Osamu Itou

Masahiro Hasebe

Takeshi Yamasaki

Yoshihiro Nakagawa

Hideaki Okamoto

Shinichi Itoh

Akihiro Yamada

Osamu Okada

Hiroaki Sato

Akihiko Kobayashi

Tomomi Yukumoto

Hiraku Ikeda

Hiroshi Miyadera

Tooru Inada

Nobuyuki Hokari

Kazuyuki Ito

Yoshihiro Moteki

Toshihiko Mine

Takashi Fujimaki

Satoshi Tsukahara

Mitsuhiro Imaizumi

Masaaki Mukaide

Satoshi Tadakuma

Tetsuma Tatsumi

Ken Amano

Hiroaki Kanemoto

Nagahisa Matsudaira

Noriaki Harigai

Hidehisa Yoshizako

Yoshiki Katsumata

Shigekazu Nishimoto

Fumio Koda

Taro Sakata

Shota Ishii

Stephen M Masutani

Toshiro Kinoshita

Toshiaki Hino

Tsutomu Shikakubo

Dave McDonough

Ronnie Jakobsson

Li Han Sen

Shinichirou Nomura

Noriyuki Ooyatsu

Shinji Tsuda

Tooru Inata

Katsumi Shimohira

Isao Koyama

Tatsuzou Enomoto

Kenshi Kobayashi

Takeru Fukuchi

Shinya Ochiai

A solid fuel burner is provided with a nozzle that is provided around the central axis of the burner, that includes a straight tube section having an opening opposed to a furnace, and a curved tube section continuous with the straight tube section, and that sprays out, from the opening to the furnace, a fluid mixture which is of a solid fuel and carrier gas of the solid fuel and which is flowing in the curved tube section; a first swirler that gives the fluid mixture a swirl at the burner central axis side of the straight tube section; and a second swirler that gives, at the burner central axis side downstream of the first swirler, the fluid mixture a swirl opposite to that given by the first swirler.

Solid fuel burner

A pulverized coal thermal power generation system that significantly reduces the amount of NOx emissions from a boiler and does not require a denitration unit is provided. When a denitration unit is not used, performance to remove mercury from a boiler waste gas is reduced. A waste gas purification system for a pulverized coal boiler, that compensates for this is provided. A pulverized coal boiler having a furnace for burning pulverized coal, burners for supplying pulverized coal and air used for combustion into the furnace so as to burn the pulverized coal in an insufficient air state and after-air ports provided on the downstream side of the burners for supplying air used for perfect combustion characterized in that, an air ratio in the furnace is 1.05 to 1.14, and the residence time of a combustion gas from the burner disposed on the uppermost stage to a main after-air port is 1.1 to 3.3 seconds. Preferably, water is mixed in advance with the air supplied from the after-air port so as to increase the specific heat. Furthermore, pulverized coal carrying air in the burner and a part of air used for combustion are mixed together in advance before they are jetted into the furnace. A waste gas purification system having a pulverized coal boiler, an air heater disposed downstream of the pulverized coal boiler for exchanging heat with a boiler waste gas to heat air used for combustion in the pulverized coal boiler, a dust removing unit, and a desulfurizing unit characterized in that, at least one of a halogen gas supply unit, a catalyst unit for oxidizing a mercury gas, and a mercury adsorbent blowing device is provided so as to oxidize mercury included in the waste gas.

Dust coal boiler, dust coal combustion method, dust coal fuel thermal power generation system, and waste gas purification system for dust coal boiler

Provided are a check valve for an airbag and an airbag device that can improve the reproducibility of the flow path blocking function while reducing the resistance upon inflation and deployment of the airbag and that can be applied to a place where a flow path is divided into a plurality of flow paths. A first embodiment of an airbag device according to the present invention has an airbag that is normally folded and that is inflated and deployed in an emergency, and an inflator that supplies gas to the airbag. The airbag has a plurality of inflation chambers, a duct portion disposed so as to connect the plurality of inflation chambers, and a check valve for an airbag having a tubular portion sewn to the duct portion, and tongue-shaped portions formed at the tip of the tubular portion.

Check valve for airbag and airbag device

An oxyfuel combustion boiler plant comprising: an air separation unit for manufacturing oxygen by separating nitrogen from air, a boiler having a burner for burning the oxygen supplied from the air separation unit and pulverized coal, and a primary system pipe for supplying the pulverized coal to the burner, an exhaust gas recirculation system pipe for supplying combustion exhaust gas discharged from the boiler to the primary system pipe, and a carbon dioxide capture unit for capturing carbon dioxide in the exhaust gas discharged from the boiler, the oxyfuel combustion boiler plant is further comprising: an oxygen supply pipe for supplying the oxygen manufactured by the air separation unit to the primary system pipe in the burner, and a pipe for supplying the combustion exhaust gas discharged from the boiler to the oxygen supply pipe, wherein an injection port of the oxygen supply pipe is disposed on an upstream side of an injection portion of the burner.

Oxyfuel combustion boiler plant

An oxyfuel combustion boiler plant comprising:

Oxyfuel combustion boiler plant and operation method of oxyfuel combustion boiler plant

A pulverized coal-fired boiler efficiently supplies air to a central part of a furnace and the neighborhood of a furnace wall, thereby promoting mixture with combustion gas, and reducing both NOx and CO. The main after air ports are structured so as to jet air having a large momentum for enabling arrival at the central part of the furnace, and the sub-after air ports are structured so as to jet air having a small momentum to the neighborhood of the wall face of the furnace, and a sectional center of each of the sub-after air ports is within a range from 1 to 5 times of a caliber of the main after air ports from a sectional center of each of the main after air ports.

Pulverized coal-fired boiler and pulverized coal burning method

The present invention discloses a carbon dioxide capture power generation system provided with a boiler to combust a fuel in the oxygen atmosphere, a carbon dioxide capture equipment to remove carbon dioxide in the wake flow of the boiler, a piping branching from the wake flow of the boiler to recycle the combustion exhaust gas to the boiler, and a desulfurization equipment to remove sulfur oxides and a sulfuric acid removal equipment to remove a sulfuric acid gas in the upstream of carbon dioxide capture equipment and in the wake flow of the boiler.

Carbon dioxide capture power generation system

A method for retrofitting a pulverized coal boiler in an air combustion boiler system is disclosed, which has a plurality of burners over a plurality of stages along the vertical direction on a wall surface of a furnace of the pulverized coal boiler and an after-air port for introducing air for two-stage combustion located above the burners to retrofit into a two-stage combustion pulverized coal boiler in an oxyfuel combustion boiler system.

Retrofit method for pulverized coal boiler

An optical disc () includes a substrate (), which is formed from either a resin-impregnated paper produced by impregnating a paper with a resin, or a resin-coated paper produced by coating a surface of a paper with a resin, and a recording layer (), wherein the resin contains at least one resin selected from the group consisting of polycarbonates, bisphenol A epoxy resins, copolymers of methyl methacrylate and styrene, and copolymers of acrylonitrile and styrene. Furthermore, a method of manufacturing an optical disc () includes: providing a recording layer sheet by forming tracks on a recording base material; and bonding the recording layer sheet to a resin-impregnated paper or a resin-coated paper, thereby providing a recording layer () formed from the recording layer sheet on the substrate ().

Optical disc and method of manufacturing same

The invention provides a combustion apparatus which can inhibit an NOx generation even in the case of promoting a mixing between a high-temperature combustion gas and an air so as to intend to reduce an unburned combustible. In a combustion apparatus provided with a burner burning a fuel within a furnace in a theoretical air ratio or less, and an air port supplying a combustion air for a shortfall in the burner, a supply apparatus for supplying a nitrogen oxide generation inhibiting gas is provided in a mixing region between the both or near the mixing region. Further, the invention provides a wind box which can inhibit an NOx generation even in the case of promoting a mixing between a high-temperature combustion gas and an air so as to intend to reduce an unburned combustible. In a wind box having an air port arranged in a back flow side of the burner and supplying a combustion air for a shortfall in the burner, a supply apparatus for supplying a nitrogen oxide generation inhibiting gas is provided in a mixing region between the both or near the mixing region.

Combustion apparatus and wind box

A overfiring air port of the present invention is to supply an incomplete combustion region with air making up for combustion-shortage, in a furnace in which the incomplete combustion region less than stoichiometric ratio is formed by a burner. Furthermore, the airport is characterized by comprising: a nozzle mechanism for injecting air including an axial velocity component of an air flow and a radial velocity component directed to a center line of the airport; and a control mechanism for controlling a ratio of these velocity components.

Overfiring air port, method for manufacturing air port, boiler, boiler facility, method for operating boiler facility and method for improving boiler facility

An after-air nozzle capable of reducing NOx and CO and a boiler equipped with such a nozzle are provided The after-air nozzle has a vena contracta such that an outside diameter of a flow passage diminishes towards the air-jetting port which supplies air to a boiler, and a changing apparatus changes a flow passage cross-sectional area of the vena contracta. A method of use of such an after-air nozzle and a boiler so equipped is also provided.

After-air nozzle for two-stage combustion boiler, and a two-stage combustion boiler, boiler and combustion method using the same

A solid fuel burner using a low oxygen concentration gas as a transporting gas of a low grade solid fuel such as brown coal or the like and a combustion method using the solid fuel burner are provided. The solid fuel burner comprises a means for accelerating ignition of the fuel and a means for preventing slugging caused by combustion ash from occurring. Mixing of fuel and air inside a fuel nozzleis accelerated by that an additional air nozzleand a separatorfor separating a flow passage are arranged in the fuel nozzle, and the exit of the additional air nozzleis set at a position so as to overlap with the separatorwhen seeing from a direction perpendicular to a burner axis, and additional air is ejected in a direction nearly perpendicular to a flow direction of a fuel jet flowing through the fuel nozzle. An amount of air from the additional air nozzleis varied corresponding to a combustion load. By increasing the amount of air from the additional air nozzleat a low load operation, an oxygen concentration of a circulation flowformed in a downstream portion outside the exit of the fuel nozzleis increased to stably burn the fuel. By decreasing the amount of air from the additional air nozzleat a high load operation, a flame is formed at a position distant from the fuel nozzleto suppress radiant heat received by structures of the solid fuel burner and walls of the furnace.

Solid fuel burner, burning method using the same, combustion apparatus and method of operating the combustion apparatus

A solid-fuel burner comprising a fuel nozzle for injecting a mixed fluid with a mixture of solid fuel and air as a carrier gas thereof, a plurality of air nozzles provided on the outside of the fuel nozzle for surrounding the fuel nozzle; an end portion of an inner circumferential wall of the air nozzle located at least at the outermost circumference is outwardly expanded, and an inductive member provided at outlet of the air nozzle located at least on the outermost circumference so as to direct flow of air in the direction of outer circumference.

Burner and combustion method for solid fuels

Conventionally, a coarse mesh having a same size in that a calculation cell was used regardless to whether the location is near or remote from radiation elements such as calculation cells and wall face elements. Therefore, it took very long calculation time to calculate an energy exchange between a remote location covered by a coarse mesh and a noted cell. Further, there were many non-influential cells for calculation in a location remote from a noted radiation element for radiation calculation, the calculation accuracy was low. The present invention is to propose a method of calculating radiation which is provided with a measure for completing the calculation rapidly while keeping calculation accuracy high. In that, near at a calculation cell from which radiation energy is emitted or at a calculation cell P into which radiation energy is absorbed, a small (level) cell is used and at a remote location from the calculation cell P, a large (level n) cell formed by combining plural small cells is used. Further, a largest calculation cell which comes into field of view angle &#x394;&#x3a9; covered by a ray is selected. As a result, the accuracy of the radiation calculation is enhanced, the calculation time is shortened and amount of memory necessary for the calculation can be reduced.

Method of calculating radiation

Growing community of inventors

Hitachinaka, Japan

Masayuki Taniguchi