Patents by Inventor Miki Shimogori
Miki Shimogori has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 10591156Abstract: 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.Type: GrantFiled: May 30, 2016Date of Patent: March 17, 2020Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Kenji Kiyama, Toshimitsu Ichinose, Miki Shimogori, Toshihiko Mine, Kenji Yamamoto, Ryuichiro Tanaka, Akira Baba, Koji Kuramashi, Koutaro Fujimura, Keigo Matsumoto
-
Patent number: 10359193Abstract: In accordance with the flow distribution of combustion gas including an unburned portion, an after-air port (AAP) arranged downstream of the two-stage combustion burner can effectively reduce the unburned portion by dividing as appropriate so as to avoid interaction, and by mixing together, two types of after-air having functions of linearity and spreading. As the configuration of this AAP, a primary nozzle for supplying primary after-air and having a vertical height greater than the horizontal width is provided in the center in the opening of the AAP, a secondary nozzle for supplying secondary after-air is provided in the opening outside of the primary nozzle, and one or more secondary after-air guide vanes having a fixed or variable tilt angle relative to the after-air port center axis are provided at the outlet of the said secondary nozzle to deflect and supply the secondary after-air horizontally to the left or right.Type: GrantFiled: July 8, 2014Date of Patent: July 23, 2019Assignee: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Kenji Kiyama, Miki Shimogori, Toshihiko Mine, Satoshi Tadakuma, Kenichi Ochi, Koji Kuramashi, Yusuke Ochi, Akira Baba, Yuki Kondo
-
Publication number: 20180142887Abstract: 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.Type: ApplicationFiled: May 30, 2016Publication date: May 24, 2018Applicant: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Kenji Kiyama, Toshimitsu Ichinose, Miki Shimogori, Toshihiko Mine, Kenji Yamamoto, Ryuichiro Tanaka, Akira Baba, Koji Kuramashi, Koutaro Fujimura, Keigo Matsumoto
-
Patent number: 9599335Abstract: A solid-fuel burner includes: a venturi having a constricting portion where the transverse cross section of a fuel passage is reduced in a fuel nozzle for supplying a solid fuel; and a fuel concentrator for diverting the flow in the nozzle outward in the wake side of the venturi, and the nozzle is formed so that (a) the aperture in the vicinity of an opening portion of a boiler furnace wall surface has a flat shape, (b) cross-sectional shape thereof orthogonal to a nozzle center axis C on the outer peripheral wall of the nozzle is circular in a transverse cross section up to the constricting portion of the venturi, (c) a portion that has a gradually increasing degree of flatness is provided between the constricting portion and the opening portion, and (d) the flat shape in the opening portion is where the degree of flatness reaches a maximum.Type: GrantFiled: August 9, 2013Date of Patent: March 21, 2017Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Toshihiko Mine, Kenji Kiyama, Miki Shimogori, Satoshi Tadakuma, Hitoshi Wakamatsu, Noriyuki Ohyatsu, Koji Kuramashi, Kenichi Ochi, Yusuke Ochi, Hirofumi Okazaki
-
Publication number: 20160146463Abstract: In accordance with the flow distribution of combustion gas including an unburned portion, an after-air port (AAP) arranged downstream of the two-stage combustion burner can effectively reduce the unburned portion by dividing as appropriate so as to avoid interaction, and by mixing together, two types of after-air having functions of linearity and spreading. As the configuration of this AAP, a primary nozzle for supplying primary after-air and having a vertical height greater than the horizontal width is provided in the center in the opening of the AAP, a secondary nozzle for supplying secondary after-air is provided in the opening outside of the primary nozzle, and one or more secondary after-air guide vanes having a fixed or variable tilt angle relative to the after-air port center axis are provided at the outlet of the said secondary nozzle to deflect and supply the secondary after-air horizontally to the left or right.Type: ApplicationFiled: July 8, 2014Publication date: May 26, 2016Inventors: Kenji KIYAMA, Miki SHIMOGORI, Toshihiko MINE, Satoshi TADAKUMA, Kenichi OCHI, Koji KURAMASHI, Yusuke OCHI, Akira BABA, Yuki KONDO
-
Publication number: 20150241058Abstract: A solid-fuel burner includes: a venturi having a constricting portion where the transverse cross section of a fuel passage is reduced in a fuel nozzle for supplying a solid fuel; and a fuel concentrator for diverting the flow in the nozzle outward in the wake side of the venturi, and the nozzle is formed so that (a) the aperture in the vicinity of an opening portion of a boiler furnace wall surface has a flat shape, (b) cross-sectional shape thereof orthogonal to a nozzle center axis C on the outer peripheral wall of the nozzle is circular in a transverse cross section up to the constricting portion of the venturi, (c) a portion that has a gradually increasing degree of flatness is provided between the constricting portion and the opening portion, and (d) the flat shape in the opening portion is where the degree of flatness reaches a maximum.Type: ApplicationFiled: August 9, 2013Publication date: August 27, 2015Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Toshihiko Mine, Kenji Kiyama, Miki Shimogori, Satoshi Tadakuma, Hitoshi Wakamatsu, Noriyuki Ohyatsu, Koji Kuramashi, Kenichi Ochi, Yusuke Ochi, Hirofumi Okazaki
-
Patent number: 7922480Abstract: 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.Type: GrantFiled: August 27, 2003Date of Patent: April 12, 2011Assignee: Babcock-Hitachi Kabushiki KaishaInventors: Kenji Kiyama, Shigeki Morita, Osamu Okada, Koji Kuramashi, Takanori Yano, Kenichi Ochi, Akira Baba, Miki Shimogori, Takeru Fukuchi, Hiroshi Yamaguchi, Hironobu Kobayashi, Masayuki Taniguchi, Hirofumi Okazaki, Kenji Yamamoto
-
Publication number: 20060115780Abstract: 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.Type: ApplicationFiled: August 27, 2003Publication date: June 1, 2006Inventors: Kenji Kiyama, Shigeki Morita, Osamu Okada, Koji Kuramashi, Takanori Yano, Keichi Ochi, Akira Baba, Miki Shimogori, Takeru Fukuchi, Hiroshi Yamaguchi, Hironobu Kobayashi, Masayuki Taniguchi, Hirofumi Okazaki, Keni Yamamoto
-
Patent number: 6715432Abstract: According to a burner of the present invention, a stable combustion is obtained in a wide range from a high-load operation condition to a low-load operation condition even in the case of low quality solid fuel such as brown coal. The amount of air supplied from additional air holes or additional air nozzles 12 can be adjusted depending on the combustion load of furnace 41. At a low load, the amount of air supplied from additional air holes or additional air nozzles 12 is increased, whereby the oxygen concentration in a recirculation zones 19 formed downstream of the outside of a fuel nozzle 11 exit, permits a stable combustion. At a high load, the amount of air supplied from additional air holes or additional air nozzles 12 is reduced, whereby a flame is formed in a position far from the fuel nozzle 11. This suppresses thermal radiation onto a solid fuel burner 42 structure and a furnace 41 wall.Type: GrantFiled: March 19, 2002Date of Patent: April 6, 2004Assignee: Babcock-Hitachi Kabushiki KaishaInventors: Toshikazu Tsumura, Hirofumi Okazaki, Miki Shimogori, Kenji Kiyama, Kouji Kuramashi, Hitoshi Kikuchi, Yoshitaka Takahashi, Shigeki Morita, Kazuhito Sakai, Masayuki Taniguchi, Hironobu Kobayashi
-
Publication number: 20020144636Abstract: According to a burner of the present invention, a stable combustion is obtained in a wide range from a high-load operation condition to a low-load operation condition even in the case of low quality solid fuel such as brown coal.Type: ApplicationFiled: March 19, 2002Publication date: October 10, 2002Inventors: Toshikazu Tsumura, Hirofumi Okazaki, Miki Shimogori, Kenji Kiyama, Kouji Kuramashi, Hitoshi Kikuchi, Yoshitaka Takahashi, Shigeki Morita, Kazuhito Sakai, Masayuki Taniguchi, Hironobu Kobayashi
-
Patent number: 6298796Abstract: A burner for burning fine coal powder comprising: a fine coal powder nozzle 10 for injecting a mixture of the fine coal powder and air; and air nozzles 11, 12 for injecting air: wherein the sufficient amount of air for complete combustion of the fine coal powder is supplied from the air nozzles; a reducing flame at a high temperature is formed by consuming oxygen rapidly with forming a flame at a high temperature by igniting the fine coal powder rapidly in the vicinity of the outlet of the burner; and an oxidizing flame having an uniform distribution of gas composition in radial direction to the central axis of the burner is formed by mixing the air injected from the air nozzle in the downstream of the reducing flame at the high temperature.Type: GrantFiled: March 1, 2000Date of Patent: October 9, 2001Assignees: Hitachi, Ltd., Babcock-Hitachi Kabushiki KaishaInventors: Hirofumi Okazaki, Hironobu Kobayashi, Toshikazu Tsumura, Kenji Kiyama, Tadashi Jinbo, Koji Kuramashi, Shigeki Morita, Shinichiro Nomura, Miki Shimogori
-
Patent number: 6189464Abstract: A combustion method utilizing a pulverized coal combustion burner which is provided with a pulverized coal nozzle for jetting a fluid mixture of pulverized coal and air and an air nozzle for jetting air. In the method, a combustion flame formed by the pulverized coal combustion burner forms a first zone of a gas phase air ratio of one or less at a radially central portion of the flame and a second zone of a gas phase air ratio of more than one outside of the first zone adjacent the coal nozzle, and a third zone of a gas phase air ratio of one or less at a downstream side from said first and second zones.Type: GrantFiled: January 28, 1999Date of Patent: February 20, 2001Assignees: Hitachi, Ltd., Babcock-Hitachi Kabushiki KaishaInventors: Hirofumi Okazaki, Hironobu Kobayashi, Toshikazu Tsumura, Kenji Kiyama, Tadashi Jimbo, Kouji Kuramashi, Shigeki Morita, Shinichiro Nomura, Miki Shimogori
-
Patent number: 6112676Abstract: A pulverized coal burner includes a pulverized coal nozzle for jetting a mixture of pulverized coal and primary air, a secondary air nozzle and a tertiary air nozzle, concentrically arranged around the outer periphery of the pulverized coal nozzle, and a tube expanded portion at the end of a partition wall separating two adjacent air nozzles. A flow shift means such as a guide plate for shifting the secondary air in the secondary air nozzle so as to flow along the tube expanded portion is provided. The secondary air is jetted outwardly by the guide plate, and mixing of the secondary air and the tertiary air with pulverized coals is delayed, whereby an amount of NOx is decreased.Type: GrantFiled: July 15, 1998Date of Patent: September 5, 2000Assignees: Hitachi, Ltd., Babcock Hitachi K.K.Inventors: Hirofumi Okazaki, Hironobu Kobayashi, Toshikazu Tsumura, Kenji Kiyama, Tadashi Jimbo, Kouji Kuramashi, Shigeki Morita, Shin-ichiro Nomura, Miki Shimogori