Mitsubishi Heavy Industries Limited

Mitsubishi Hitachi Power Systems, Ltd.

Koutaro Fujimura

Keigo Matsumoto

Jun Kasai

Kazuhiro Domoto

Naofumi Abe

Shinji Matsumoto

Eiji Kato

Hiroshi Suganuma

Toshimitsu Ichinose

Ryuhei Takashima

Toshihiro Hirata

Naoyuki Kamiyama

Kenji Yamamoto

Kenji Kiyama

Akira Baba

Toshihiko Setoguchi

Masazumi Tanoura

Yasutoshi Ueda

Kenji Muta

Koji Kuramashi

Takuichiro Daimaru

Tadashi Aoki

Toshihiko Mine

Miki Shimogori

Shinichiro Asami

Takanori Tsutsumi

Ryuichiro Tanaka

Akiyasu Okamoto

Takeshi Aruga

Yasuhiro Sueoka

Tetsuya Sawatsubashi

Masahiko Taniguchi

Chisato Tsukahara

Yuichi Ide

Shigehide Komada

Isao Moriyama

Iwamaro Amano

Munehiro Kakimi

Koichi Tagami

Yoshihisa Yamamoto

Shinsaku Dobashi

Tomoo Akiyama

Tomohiro Yamauchi

Masahiko Matsuda

Takayuki Suto

A burner includes: an inner gas nozzle which extends along an axis while surrounding the axis, and which is capable of supplying a furnace with an inner combustion oxygen containing gas; a fuel supply nozzle surrounding the inner gas nozzle as seen in a direction along the axis, the fuel supply nozzle being capable of supplying the furnace with a fluid mixture of a solid powder fuel and a carrier gas; an outer gas nozzle surrounding the fuel supply nozzle as seen in the direction along the axis, the outer gas nozzle being capable of supplying the furnace with an outer combustion oxygen containing gas; and a flow-velocity-ratio adjustment apparatus capable of adjusting a relative flow velocity ratio of a discharge flow velocity of the inner combustion oxygen containing gas to a discharge flow velocity of the outer combustion oxygen containing gas.

Burner, combustion device, boiler, and burner control method

A solid-fuel-fired burner that suppresses a high-temperature oxygen remaining region formed at the outer circumference of a flame and that can decrease the amount of NOx eventually produced is provided. A solid-fuel-fired burner that is used in a burner section of a solid-fuel-fired boiler for performing low-NOx combustion separately in the burner section and in an additional-air injection section and that injects powdered solid-fuel and air into a furnace includes a fuel burner having internal flame stabilization and a secondary-air injection port that does not perform flame stabilization, in which the air ratio in the fuel burner is set to 0.85 or more.

Solid-fuel-fired burner and solid-fuel-fired boiler

A combustion burnerincludes a fuel nozzlethat injects fuel gas prepared by mixing solid fuel and primary air, secondary air nozzlesthat inject secondary air from the outer periphery of the fuel nozzle, and a flame holderthat is arranged in an opening of the fuel nozzle. In the combustion burner, the flame holderhas a splitting shape that widens in the flow direction of the fuel gas. When seen in cross section along a direction in which the flame holderwidens, the cross section passing through the central axis of the fuel nozzle, a maximum distance h from the central axis of the fuel nozzleto the widened end of the flame holderand an inside diameter r of the openingof the fuel nozzlesatisfy h/(r/2)&#x3c;0.6.

Combustion burner and boiler including the same

There is provided a control device of a coal pulverizer which enables estimation of a coal output with a precision suited for a purpose. In a control device of a coal pulverizer which pulverizes coal by the coal pulverizer and estimates coal output by which the pulverized coal is output to a boiler, the control device includes a main operation circuit which calculates a command signal associated with a coal feed rate on the basis of detection data from a boiler or a power generator connected to the boiler, and an additional control unit which calculates the deviation between a standard coal output pattern preset in the coal pulverizer, and a current coal output pattern, and adds a calculation result by the additional control unit to the main operation circuit as a correction signal.

Control device of coal pulverizer

The combustion controller controls the fuel and air that are supplied to the combustion furnace for burning substances, and addresses the aforementioned object by including: fuel supply unit for supplying fuel and air into the combustion furnace; air supply unit for supplying air into the combustion furnace, the air supply unit being disposed downstream of the fuel supply unit in the direction of flow of combustion air; concentration measuring unit for measuring the concentration of hydrogen sulfide of the combustion air by passing a measurement beam of light through the combustion air at a measurement position downstream of the fuel supply unit in the direction of flow of the combustion air; and control unit for controlling the amount of air supplied from the fuel supply unit based on a measurement result provided by the concentration measuring unit.

Combustion controller

A particle separator capable of enhancing the collection efficiency while minimizing an augmentation of auxiliary machinery power and an increase of the device size is provided. A particle separator that separates powder being transported on an air flow in a state of a solid-gas two-phase flow from the air flow and collects the powder is provided with a drift generating portion provided in the vicinity of a main body connecting portion of a solid and gas supply tube for letting the solid-gas two-phase flow stream inside a separator main body from the circumferential direction and configured to concentrate a high powder particle concentration of the solid-gas two-phase flow on the outer peripheral side of the separator main body.

Particle separator and solid fuel burner

In an exhaust gas treatment system including a denitration device that removes nitrogen oxide in exhaust gas from a heavy fuel-fired boiler, an air preheater that recovers heat in the gas after the nitrogen oxide is removed, an electric precipitator that removes dust while adding ammonia into the gas after heat recovery, a desulfurization device that removes sulfur oxide in the gas after dust removal, and a stack that exhausts the gas after desulfurization to the outside, an ash-shear-force measuring instrument is provided to measure an ash shear force, which is ash flowability, on the downstream side of the electric precipitator, so that a feed rate of an air supply unit that supplies air to the boiler is reduced according to ash shear-force information.

Heavy fuel-fired boiler system and operating method thereof

To provide a burner structure that is capable of efficiently cooling a nozzle main body with a small amount of air, and takes an efficient countermeasure against a falling clinker or radiation heat. The burner structure includes: a pulverized coal-air mixture path provided in a burner central portion and supplying a mixture of a fuel and a primary air; a secondary air path provided around the pulverized coal-air mixture path and supplying a secondary air; a cooling air path provided around or above and below the secondary air path and supplying a cooling air; a nozzle main body attached to furnace-side end portions of the pulverized coal-air mixture path and the secondary air path in a tiltable form and provided with a flame holder at its tip end; and a cooling air nozzle attached to a furnace-side end portion of the cooling air path in a tiltable form.

Burner structure

Growing community of inventors

Tokyo, Japan

Koutaro Fujimura