Hitachi, Ltd.

Babcock-Hitachi K.k.

Hitachi Automotive Systems, Ltd.

Mitsubishi Hitachi Power Systems, Ltd.

Babcock-Hitachi Kabushiki Kaisha

Hisayuki Orita

Masayuki Taniguchi

Hirofumi Okazaki

Akihito Orii

Hiroki Sato

Yuki Kamikawa

Hironobu Kobayashi

Kenji Kiyama

Shuichi Kanno

Akira Baba

Masato Kaneeda

Kouji Kuramashi

Nobuyuki Hokari

Takanori Yano

Jun Shimamura

Masaaki Mukaide

Kouichi Yokoyama

Kohei Yoshikawa

Noriko Yoshida

Motoyuki Abe

Masayuki Saruwatari

Kenji Yamamoto

Kazuhiro Oryoji

Toshio Katsube

Nobuyoshi Mishima

Kenichi Ochi

Toshihiko Mine

Tsuyoshi Shibata

Ken Amano

Satoshi Tadakuma

Hiroaki Kanemoto

Hidehisa Yoshizako

Kazumi Yasuda

Toshiyuki Tanaka

Yoshihiro Kidera

Shinji Tsuda

Noriyuki Ooyatsu

Shinichirou Nomura

Katsumi Shimohira

An object of the present invention is to provide an engine system control device capable of stabilizing a combustion state, while improving fuel economy by performing intake air heating. According to the present invention, there is provided an engine system control device which controls an engine system including an engine configured to combust air-fuel mixture, an intake air path configured to take air to the engine, and an intake air heating mechanism configured to heat the intake air, wherein a heating amount of the intake air is controlled depending on a combustion speed of the air-fuel mixture.

Engine system control device

A combustion exhaust gas treatment system comprising: a heat exchanger (A) for recovering heat contained in the combustion exhaust gas into heat medium, an absorption column for obtaining COremoved gas by absorbing COin the combustion exhaust gas into absorbent, a heat exchanger (B) for applying heat recovered by heat medium to the COabsorbed absorbent, a desorption column for desorbing the absorbent by removing COfrom the COabsorbed absorbent, a flash tank for flash vaporizing the desorbed absorbent and a heat exchanger (E) for transferring heat from the desorbed absorbent to the COabsorbed absorbent, wherein the COabsorbed absorbent can be supplied from the absorption column to the desorption column via the heat exchanger (E) and the heat exchanger (B) in this order, and the desorbed absorbent can be supplied from the desorption column to the absorption column via the flash tank and the heat exchanger (E) in this order.

Combustion exhaust gas treatment system and method of treating combustion exhaust gas

A COseparation unit for recovering COfrom a CO-containing gas by using a solid COcapturing material, in which the amount of used steam is decreased: the unit comprising a capturing material container, a first pipeline for allowing the CO-containing gas to flow therethrough into the capturing material container, a second pipeline for allowing a gas from which COhas been removed to be discharged therethrough, a third pipeline for introducing a steam-containing gas to the inside of the capturing material container, a fourth pipeline for allowing a desorbed CO-containing gas to be discharged therethrough, wherein the unit further includes a compressor for compressing steam, a fifth pipeline for connecting the capturing material container with a suction port of the compressor, and a sixth pipeline for connecting a discharge port of the compressor with the third pipeline.

[object Object]

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

The COcapture system by chemical absorption for removing COfrom a combustion exhaust gas by a solvent, comprising: an absorber for absorbing COby a solvent, a regenerator for heating a rich solvent absorbed COthereby releasing CO, a gas exhaust system for discharging gas from the regenerator, a gas compressor installed in the gas exhaust system, a heat exchanger disposed downstream of the gas compressor for exchanging heat between compressed gas and rich solvent to be supplied to the regenerator, a gas-liquid separator disposed downstream of the heat exchanger for separating gas from condensed water, a condensed water supply system for supplying condensed water from the gas-liquid separator to the regenerator, another gas exhaust system for discharging gas containing high-concentration COfrom the gas-liquid separator, and a compressor disposed downstream of the gas-liquid separator in the another gas exhaust system for pressurizing the gas containing high-concentration CO.

A boiler system including an electric power generation system having a boiler, a steam turbine for generating electric power by steams which received heat at a boiler, a condenser provided at the downstream thereof for condensing the steams, and a heater for heating condensed water by steams extracted from the steam turbine and, further, a COcapture system of sorbing and capturing a COgas in an exhausted gas exhausted from the boiler by using a solid COsorbent, and a chimney of exhausting an exhaust gas in the COcapture system after recovery of COor an exhaust gas exhausted from the boiler, in which the temperature of a fluid concerned with the boiler system is increased by using the exhaust gas exhausted from the COcapture system.

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 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

When at least one of a distribution of gas composition and distribution of temperature inside a furnace is estimated by dividing the region inside the furnace into two-dimensional or three-dimensional cells, and calculating a gas flow rate, a gas reaction amount, a coal combustion rate, a radiant heat transfer rate in each of the cells, based on design data including furnace dimentions and operational data including a coal supply rate and an air supply rate, an air ratio of gas phase--gas composion table is referred to, thereby to simplify the gas reaction amount calculation and reduce drastically time required for the calculation.

Furnace inside state estimation control apparatus of pulverized coal

Growing community of inventors

Hitachinaka, Japan

Hisayuki Orita