Mitsubishi Heavy Industries Limited

Daishi Ueno

Masazumi Tanoura

Masatoshi Katsuki

Minoru Danno

Kenji Muta

Tadashi Aoki

Eiji Kato

Yuuko Ujihara

Kageharu Moriyama

Yuko Ujihara

Koji Nakano

Kenji Fujiwara

Shinichiro Asami

Shuuji Fujii

Takashi Fujinaga

Yoshikatsu Kuroda

Masahiro Funayama

Atsushi Takita

Shinichi Kobayashi

Ichiro Awaya

Yuichi Kondo

Taro Wada

Kenj Fujiwara

Teruo Takeshita

Mitsunobu Sekiya

A flow volume measurement device or a flow velocity measurement device include a measurement cell including a main pipe, an incident tube that is connected to the main pipe, an emission tube that is connected to the main pipe, and a first purge-fluid supply tube that is connected to the incident tube, a purge-fluid supply unit that supplies purge fluid into the first purge-fluid supply tube of the measurement cell, a light emitting unit that emits a laser beam to the measurement cell, a light receiving unit that receives the laser beam emitted from the light emitting unit and having passed through the measurement cell, and outputs a received amount of light as a light reception signal, a calculation unit that calculates a flow volume or a flow velocity of exhaust fluid flowing in the measurement cell, based on a light reception signal output from the light receiving unit.

Flow volume measurement device and flow velocity measurement device

An object of the present invention is to provide a flue gas purifying device that can efficiently decrease nitrogen oxides in flue gas. This object is solved by including: an exhaust pipe that guides flue gas discharged from a burning appliance; a urea-water injecting unit that injects urea water into the exhaust pipe; a catalytic unit arranged on a downstream side to a position where urea water is injected in a flow direction of flue gas and having a urea SCR catalyst; a first ammonia-concentration measuring unit that measures a concentration of ammonia in flue gas at a measurement position in a region where the catalytic unit is arranged; a second ammonia-concentration measuring unit arranged on a downstream side to the catalytic unit in a flow direction of the flue gas, to measure a concentration of ammonia in the flue gas having passed through the urea SCR catalyst; and a control unit that controls injection of urea water by the urea-water injecting unit based on measurement results acquired by the first and second ammonia-concentration measuring units.

Flue gas purifying device

An object of the present invention is to provide a flue gas purifying device that can suppress leakage of ammonia and can efficiently decrease nitrogen oxides in flue gas. The object is achieved by a flue gas purifying device including: an exhaust pipe; a urea-water injecting unit that injects urea water into the exhaust pipe; a catalytic unit that includes a urea SCR catalyst that promotes a reaction between ammonia and nitrogen oxides and a support mechanism that supports the urea SCR catalyst in the exhaust pipe, and is arranged on a downstream side to a position where urea water is injected; a concentration measuring unit arranged on a downstream side to the catalytic unit in a flow direction of flue gas to measure an ammonia concentration in flue gas having passed through the urea SCR catalyst; and a control unit that controls injection of urea water by the urea-water injecting unit based on an ammonia concentration measured by the concentration measuring unit.

An exhaust gas purification system which, in a wider temperature range, can reduce and remove nitrogen oxides in an exhaust gas by a reduction catalyst with the use of hydrogen as a reducing agent is provided. The exhaust gas purification system has an electronic control device () which controls an EGR valve () and an EGR pipe () so that the concentration of oxygen in the exhaust gas obtained from a data map based on the state of an engine () becomes less than a predetermined value, and which controls a microreactor () so that hydrogen is added to the exhaust gas when the concentration of oxygen in the exhaust gas is less than the predetermined value.

Exhaust gas purification system and exhaust gas purification method

An exhaust gas purification system, which upgrades exhaust gas purification while curtailing an increase in an operating cost, is disclosed. The exhaust gas purification system comprises an SCR catalyst for reducing and removing nitrogen oxides in an exhaust gas from an engine () by bringing the nitrogen oxides into contact with a reducing agent, oxidation catalysts () for oxidizing gas components in the exhaust gas, a water electrolysis device () for producing oxygen by electrolyzing water, and an oxygen supply pipe () for supplying the oxygen produced by the water electrolysis device () to the exhaust gas.

An object is to provide a semiconductor element module having high reliability, superior electric connection and thermal connection and capable of securing sufficient cooling performance, and also to provide a method for manufacturing the same. The semiconductor element module () comprises an IGBT () and a diode () having electrodes formed on surfaces of both sides thereof, a ceramic substrate (), in which thermal conductivity is high, having wiring circuit layers () formed on the surface thereof for bonding to surfaces of one side of the IGBT () and the diode (), a ceramic substrate (), in which thermal conductivity is high, having a wiring circuit layer () formed on the surface thereof for bonding to surfaces of other side of the IGBT () and the diode (), and a sealing member () which is sandwiched between the outer edges of the ceramic substrates () for sealing inside thereof; and these members are bonded by room-temperature bonding.

Semiconductor element module and method for manufacturing the same

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Tokyo, Japan

Daishi Ueno