Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Power, Ltd.

Mhi Plant Corporation

Kenta Haari

Yasunari Shibata

Osamu Shinada

Masashi Kitada

Yuichiro Kitagawa

Takashi Yamamoto

Yoshinori Koyama

Masami Tsuda

Fumihiro Chuman

Gen Sakashita

Yasuhiro Takei

Yasushi Okuda

Shigetaka Takeda

Satoru Murai

In a soot blower, a heat transfer tube of a heat exchanger is arranged inside a pressure vessel, and gas for cleaning is injected toward the heat transfer tube from an injection pipe movable into and out of the pressure vessel. The soot blower includes a cylindrical casing provided to surround an insertion hole on the pressure vessel side into which the injection pipe is inserted, to extend outside the pressure vessel, the injection pipe being inserted into an inside of the casing; a support part provided inside the casing to guide movement of the injection pipe and to ensure airtightness between the casing and the injection pipe; and a gas supplying device provided immediately close to the support part to generate a jet stream of gas in a portion of the injection pipe that projects to the pressure vessel side.

Soot blower

A gasification apparatus for gasifying a carbonaceous feedstock to produce raw syngas includes a gasifier in which the raw syngas flows, a heat exchanger provided inside the gasifier downstream to exchange heat with the raw syngas, a hanger pipe through which a part of water supplied from a water supply passage flows to support a load of the heat exchanger, a heat exchanger inflow passage configured to cause the water flowing out from the hanger pipe to flow to an inflow side of the heat exchanger, a bypass passage branching from the water supply passage to cause a remaining of the water supplied to the hanger pipe, a bypass valve provided in the bypass passage, and a control device configured to control, depending on a gasifier load, an opening degree of the bypass valve to adjust the water supplied to the hanger pipe and the bypass passage.

Gasification apparatus, control device, integrated gasification combined cycle, and control method

An object is to prevent blockage of a slag hole with char and slag, enabling stable operation of a gasification furnace. In a configuration in which a heat exchanger () is provided above a coal gasification portion (), the diameters (D, D) of the slag hole () and the throat portion () are set to three times or more the pitch (ST) of rows of heat exchange tubes (). By doing so, blockage of the slag hole () or the throat portion () with char and a sintered material () falling from the heat exchanger () is prevented, enabling stable operation of a coal gasification furnace ().

Gasification furnace, gasification power plant, and method of preventing blockage of slag hole in gasification furnance

A gasifier () including a fluid communication channel () that communicates a fluid, which undergoes heat exchange in the furnace, and that generates syngas by gasifying fuel; gas purifying equipment that removes impurities contained in the syngas generated by the gasifier (); a gas turbine that is driven by the gas purified by the gas purifying equipment; and a heat exchanger that heats a fluid with exhaust expelled from the gas turbine. The fluid heated by the heat exchanger is supplied to the fluid communication channel () by being pressurized by pressurizing gas when performing warm-up of the gasifier ().

Gasification power generation plant

A pressure equalizing structure that includes: a gasification furnace () for gasifying a carbon-containing fuel; a pressure vessel () housing the gasification furnace (); an annulus section () filled with an inert gas and provided between the gasification furnace () and the pressure vessel (). A pressure equalizing part (), which is connected to the gasification furnace () to communicate between the inside of the gasification furnace () and the inside of the annulus section (), is provided in a region where the in-furnace gas temperature inside the gasification furnace () is higher than the annulus temperature inside the annulus section ().

Pressure equalizing structure and pressure equalizing method for gasification furnace apparatus

A ground flare system that can enhance the removal rate of dust and other such impurities contained in exhaust gas to be processed. The ground flare system that performs an incineration process on processing target gas and emits the processed gas to the atmosphere includes: a ground flare that combusts the processing target gas; a knock-out drum that is placed upstream of the ground flare and reduces a flow velocity of the processing target gas introduced thereto; a seal drum for backfire prevention placed upstream of the ground flare; a gas introducing pipe that introduces the processing target gas into the knock-out drum and/or the seal drum; and a water film forming unit that is provided inside of the gas introducing pipe and forms a water film of spray water in a direction that intersects with a flow direction of the processing target gas.

Growing community of inventors

Tokyo, Japan

Kenta Haari