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1. 发明授权

US07922480B2 Combustion apparatus and wind box 有权
标题翻译：燃烧器和风箱
公开(公告)号：US07922480B2
公开(公告)日：2011-04-12
申请号：US10538524
申请日：2003-08-27
申请人： 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
发明人： 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
IPC分类号： F23M9/00
CPC分类号： F23N5/006 , F23C9/08 , F23L9/04 , F23L15/04 , Y02E20/348
摘要： 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. In a wind box having an air port arranged in a back flow side of the burner and 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.
摘要翻译：本发明提供了即使在促进高温燃烧气体和空气之间的混合的情况下也能够抑制NOx生成以便减少未燃烧的可燃物的燃烧装置。在具有在理论空气比以下的炉内燃烧燃料的燃烧装置和供给燃烧器不足的燃烧用空气的空气口的情况下，设置供给氮氧化物产生抑制气体的供给装置在混合区域之间或混合区域之间的混合区域。此外，本发明提供一种风箱，即使在促进高温燃烧气体和空气之间的混合的情况下也能够抑制NOx的产生，以期减少未燃烧的可燃物。在具有布置在燃烧器的后流侧的空气口并且供应燃烧器不足的燃烧空气的风箱中，在两者之间的混合区域中提供用于供应氮氧化物产生抑制气体的供应装置，在混合区附近。

2. 发明申请

US20060115780A1 Combustion apparatus and wind box 有权
标题翻译：燃烧器和风箱
公开(公告)号：US20060115780A1
公开(公告)日：2006-06-01
申请号：US10538524
申请日：2003-08-27
申请人： 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
发明人： 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
IPC分类号： F23M9/00
CPC分类号： F23N5/006 , F23C9/08 , F23L9/04 , F23L15/04 , Y02E20/348
摘要： 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. In a wind box having an air port arranged in a back flow side of the burner and 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.
摘要翻译：本发明提供了即使在促进高温燃烧气体和空气之间的混合的情况下也能够抑制NOx生成以便减少未燃烧的可燃物的燃烧装置。在具有在理论空气比以下的炉内燃烧燃料的燃烧装置和供给燃烧器不足的燃烧用空气的空气口的情况下，设置供给氮氧化物产生抑制气体的供给装置在混合区域之间或混合区域之间的混合区域。此外，本发明提供一种风箱，即使在促进高温燃烧气体和空气之间的混合的情况下也能够抑制NOx的产生，以期减少未燃烧的可燃物。在具有布置在燃烧器的后流侧的空气口并且供应燃烧器不足的燃烧空气的风箱中，在两者之间的混合区域中提供用于供应氮氧化物产生抑制气体的供应装置，在混合区附近。

3. 发明授权

US06298796B1 Fine coal powder combustion method for a fine coal powder combustion burner 有权
标题翻译：细煤粉燃烧法煤粉燃烧器
公开(公告)号：US06298796B1
公开(公告)日：2001-10-09
申请号：US09515713
申请日：2000-03-01
申请人： Hirofumi Okazaki , Hironobu Kobayashi , Toshikazu Tsumura , Kenji Kiyama , Tadashi Jinbo , Koji Kuramashi , Shigeki Morita , Shinichiro Nomura , Miki Shimogori
发明人： Hirofumi Okazaki , Hironobu Kobayashi , Toshikazu Tsumura , Kenji Kiyama , Tadashi Jinbo , Koji Kuramashi , Shigeki Morita , Shinichiro Nomura , Miki Shimogori
IPC分类号： F23B700
CPC分类号： F23C6/045 , F23C2201/20 , F23D1/00 , F23D2201/10
摘要： 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.
摘要翻译：一种用于燃烧粉煤的燃烧器，包括：用于喷射煤粉和空气的混合物的细煤粉喷嘴10; 以及用于喷射空气的空气喷嘴11,12，其中从空气喷嘴供给足够量的用于粉煤粉完全燃烧的空气; 在高温下通过在燃烧器出口附近快速点燃细粉煤而在高温下形成火焰而快速消耗氧而形成高温还原火焰; 并且通过在高温下将从空气喷嘴喷射的空气在还原火焰的下游混合而形成具有气体组成在燃烧器的中心轴线上的径向均匀分布的氧化火焰。

4. 发明授权

US06237510B1 Combustion burner and combustion device provided with same 失效
标题翻译：燃烧燃烧器和燃烧装置相同
公开(公告)号：US06237510B1
公开(公告)日：2001-05-29
申请号：US09043425
申请日：1998-03-19
申请人： Toshikazu Tsumura , Kenji Kiyama , Tadashi Jimbo , Shigeki Morita , Koji Kuramashi , Kunio Okiura , Shinichiro Nomura , Miki Mori , Noriyuki Ohyatsu , Noboru Takarayama , Toshihiko Mine , Hironobu Kobayashi , Hirofumi Okazaki
发明人： Toshikazu Tsumura , Kenji Kiyama , Tadashi Jimbo , Shigeki Morita , Koji Kuramashi , Kunio Okiura , Shinichiro Nomura , Miki Mori , Noriyuki Ohyatsu , Noboru Takarayama , Toshihiko Mine , Hironobu Kobayashi , Hirofumi Okazaki
IPC分类号： F23C110
CPC分类号： F23D1/00 , F23C2201/20 , F23C2202/40 , F23C2900/09002 , F23D2201/20 , F23D2209/20 , F23K2201/103
摘要： A combustion burner includes a mixture nozzle (2) defining a mixture fluid passage through which a mixture fluid (1) containing pulverized coal and conveyor gas flows toward a furnace, secondary and tertiary air passages surrounding the mixture nozzle (2), through which secondary air (6) and tertiary air (9) for combustion purposes flow, respectively; and air injection nozzles (24) provided in the vicinity of an outer periphery of a distal end of the mixture nozzle (2). The air (21) is injected from the air injection nozzles (24) toward the axis of the mixture nozzle, so that the high-temperature gas in the vicinity of the outer periphery of the distal end of the mixture nozzle (2) is drawn into the mixture fluid (1) in the vicinity of the outer periphery of this distal end.
摘要翻译：燃烧器包括限定混合流体通道的混合喷嘴（2），含有粉煤和输送气体的混合流体（1）通过该混合流体通道流向炉子，二次和三次空气通道围绕混合物喷嘴（2），二次空气（6）和三次空气（9）分别用于燃烧目的流动; 以及设置在混合喷嘴（2）的前端的外周附近的空气喷射喷嘴（24）。空气（21）从空气注入喷嘴（24）朝向混合喷嘴的轴线注入，使得混合喷嘴（2）的远端外周附近的高温气体被拉出在该远端的外周附近的混合流体（1）中。

5. 发明申请

US20130291772A1 COMBUSTION SYSTEM AND METHOD FOR OPERATING SAME 审中-公开
标题翻译：燃烧系统及其运行方法
公开(公告)号：US20130291772A1
公开(公告)日：2013-11-07
申请号：US13825559
申请日：2011-09-30
申请人： Toshihiko Mine , Kenji Kiyama , Koji Kuramashi , Kenichi Ochi , Hirofumi Okazaki
发明人： Toshihiko Mine , Kenji Kiyama , Koji Kuramashi , Kenichi Ochi , Hirofumi Okazaki
IPC分类号： F23L7/00 , F23J15/02 , F23K1/00 , F23D1/00 , F23C9/00
CPC分类号： F23D1/005 , F22B1/18 , F23C9/003 , F23C2201/20 , F23C2206/102 , F23D1/00 , F23D2201/10 , F23D2201/20 , F23J15/02 , F23K1/00 , F23L7/007 , F23L2900/07001 , F23L2900/07003 , F23L2900/07006 , F23L2900/07007 , Y02E20/322 , Y02E20/344
摘要： An oxygen combustion system includes a boiler to burn fuel using combustion gas composed of oxygen-rich gas and circulating flue gas, a dust remover disposed in a flue through which flue gas discharged from the boiler flows, a second flue leading the combustion gas to the boiler, the combustion gas being made by mixing the circulating flue gas extracted downstream of the dust remover with the oxygen-rich gas, a combustion gas heater exchanging heat between the flue gas flowing between the boiler and dust remover and the combustion gas flowing through the second flue, and a flue gas cooler disposed between the heater and the dust remover to cool the flue gas. A control unit controls at least one of a flow rate and cooling medium temperature of the flue gas cooler such that temperature of the flue gas introduced into the dust remover will be between 90° C. and 140° C.
摘要翻译：氧气燃烧系统包括使用由富氧气体和循环烟道气组成的燃烧气体燃烧燃料的锅炉，设置在烟道中排出的烟道的除尘器，通过该烟道排出烟道气流过的第二烟道，锅炉，通过将从除尘器下游提取的循环烟道气与富氧气体混合而形成的燃烧气体，在锅炉和除尘器之间流动的烟道气与流过锅炉的燃烧气体之间交换热量的燃烧气体加热器第二烟道和布置在加热器和除尘器之间的烟道气体冷却器以冷却烟道气。控制单元控制烟气冷却器的流量和冷却介质温度中的至少一个，使得引入除尘器的烟道气的温度将在90℃和140℃之间。

6. 发明申请

US20100162930A1 SOLID-FUEL BURNER, COMBUSTION DEVICE USING SOLID-FUEL BURNER, AND METHOD OF OPERATING THE COMBUSTION DEVICE 审中-公开
标题翻译：固体燃料燃烧器，使用固体燃料燃烧器的燃烧装置以及操作燃烧装置的方法
公开(公告)号：US20100162930A1
公开(公告)日：2010-07-01
申请号：US12676971
申请日：2008-03-06
申请人： Hirofumi Okazaki , Koji Kuramashi , Yusuke Ochi , Akira Baba , Takanori Yano
发明人： Hirofumi Okazaki , Koji Kuramashi , Yusuke Ochi , Akira Baba , Takanori Yano
IPC分类号： F23N5/00 , F23D1/00 , F23C99/00 , F23K3/02 , F23C7/00
CPC分类号： F23D1/00 , F23C7/008 , F23C2201/20 , F23D2201/20
摘要： Provided is a solid fuel burner (60) suitable for controlling a flame to be formed by combustion of fuel ejected from the burner (60) and a temperature distribution in a furnace, a combustion apparatus using the solid fuel burner (60), and a method of operating the combustion apparatus. Providing in the fuel nozzle (10) a plurality of gas ejection nozzles (81), (82) and a restriction (obstacle) (19) downstream thereof, and ejecting a relatively large amount of gas from a portion of the gas ejection nozzles (81) provides a circumferential distribution in fuel concentration. Further, having the restriction (obstacle) (19) on a downstream side increases a deviation in fuel concentration. Providing a fuel concentration deviation in the circumferential direction makes it possible to change the forming position of a flame. Therefore, regulating the flow rate of gas flowing through the gas ejection nozzles (81), (82) makes it possible to control constant the temperature of combustion gas at a furnace exit, the temperature of a heat transfer tube provided on a furnace wall surface, the temperature of a fluid flowing through the heat transfer tube, or the temperature of a heat transfer tube provided in a furnace or at a downstream-side flue portion thereof and the temperature of a fluid flowing through the heat transfer tube.
摘要翻译：提供一种固体燃料燃烧器（60），其适于控制由燃烧器（60）喷射的燃料的燃烧和炉内的温度分布形成的火焰，使用固体燃料燃烧器（60）的燃烧装置，以及操作燃烧装置的方法。在燃料喷嘴（10）中设置有多个气体喷射喷嘴（81），（82）和其下游的限制（障碍物）（19），并且从气体喷射喷嘴的一部分喷射相对大量的气体 81）提供燃料浓度的圆周分布。此外，在下游侧具有限制（障碍物）（19）会增加燃料浓度的偏差。在圆周方向上提供燃料浓度偏差使得可以改变火焰的形成位置。因此，通过调节流过气体喷嘴（81），（82）的气体的流量，能够使炉出口处的燃烧气体的温度恒定，设在炉壁面上的传热管的温度流过传热管的流体的温度，或设置在炉子或下游侧烟道部分的传热管的温度以及流过传热管的流体的温度。

7. 发明申请

US20100031858A1 Pulverized Coal Boiler 审中-公开
标题翻译：粉煤锅炉
公开(公告)号：US20100031858A1
公开(公告)日：2010-02-11
申请号：US12513959
申请日：2007-11-06
申请人： Akihito Orii , Masayuki Taniguchi , Yuki Kamikawa , Hironobu Kobayashi , Miki Shimogouri , Toshihiko Mine , Shinichiro Nomura , Akira Baba , Yusuke Ochi , Koji Kuramashi
发明人： Akihito Orii , Masayuki Taniguchi , Yuki Kamikawa , Hironobu Kobayashi , Miki Shimogouri , Toshihiko Mine , Shinichiro Nomura , Akira Baba , Yusuke Ochi , Koji Kuramashi
IPC分类号： F23N3/00 , F23K3/00 , F23L7/00 , F23L9/00 , F23N5/24
CPC分类号： F23L7/002 , F23C7/02 , F23J2215/101 , F23L9/02 , F23L2900/07008 , F23L2900/07009
摘要： The present invention provides a highly reliable pulverized coal boiler that ensures suppression of a rise in flame temperature caused during the combustion of an unburnt gas in a furnace when combustion air is supplied from after-air ports so as to reduce the concentration of thermal NOx generated during the combustion.A pulverized coal boiler (100) according to the present invention comprising a furnace (1), burners (2) provided on the wall of the furnace for supplying pulverized coal to the inside of the furnace and burning the pulverized coal, and an after-air port (3 or 61) provided on the wall of the furnace at a position downstream of the burner for supplying combustion air to the inside of the furnace, the pulverized coal boiler further comprising: a spray nozzle (6) disposed near a jet port (3 or 60) of the after-air port for supplying water, steam, or two fluids including water and steam to the inside of the furnace; whereby the water, the steam, or the two fluids including water and steam are sprayed from the spray nozzle are supplied to the inside of the furnace together with the combustion air supplied from the after-air port.
摘要翻译：本发明提供了一种高度可靠的粉煤锅炉，其确保了在从后空气供给燃烧空气时，在炉内的未燃烧气体燃烧时引起的火焰温度上升，从而降低生成的热NOx浓度在燃烧期间。根据本发明的粉煤锅炉（100）包括炉（1），设置在炉壁上的燃烧器（2），用于将粉煤供应到炉内并燃烧粉煤; 在燃烧器下游的位置设置在炉壁上的空气端口（3或61），用于向炉内供给燃烧空气，该粉煤锅炉还包括：喷嘴（6），设置在喷嘴附近（3或60），用于将水，蒸汽或包括水和蒸汽的两种流体供应到炉内; 由此从喷雾喷嘴喷射的水，蒸汽或包括水和蒸汽的两种流体与从后空气供给的燃烧空气一起被供应到炉内。

8. 发明授权

US6152051A Powered fuel combustion burner with nozzle flow guide 失效
标题翻译：动力式燃油燃烧器，带喷嘴导流器
公开(公告)号：US6152051A
公开(公告)日：2000-11-28
申请号：US51744
申请日：1998-04-20
申请人： Kenji Kiyama , Toshikazu Tsumura , Tadashi Jimbo , Koji Kuramashi , Shigeki Morita , Miki Mori
发明人： Kenji Kiyama , Toshikazu Tsumura , Tadashi Jimbo , Koji Kuramashi , Shigeki Morita , Miki Mori
IPC分类号： F23D1/00 , F23C1/10
CPC分类号： F23D1/00 , F23C2202/40 , F23C2900/09002 , F23D2201/20 , F23D2209/20
摘要： A combustion burner includes a mixture nozzle, a gas supply nozzle, and a flow guide. The mixture nozzle extends toward an interior of a furnace, and defines a mixture passage through which a mixture containing powdered solid fuel and gas for transferring the solid fuel flows. A distal end portion of the mixture nozzle is flared so that a flow passage area of the mixture passage increases progressively in a direction of flow of the mixture. The gas supply nozzle radially surrounds the mixture nozzle to define between the gas supply nozzle and the mixture nozzle a gas passage through which a combustion oxygen-containing gas flows toward the furnace. The flow guide is provided within the mixture nozzle at a position upstream of the flared portion of the mixture nozzle with respect to a flow of the mixture so as to make the mixture flow straight along an inner peripheral surface of the flared portion of the mixture nozzle.
摘要翻译： PCT No.PCT / JP97 / 01489 Sec。 371日期：1998年4月20日 102（e）1998年4月20日PCT 1997年4月30日PCT PCT。公开号WO98 / 08026 日期1998年2月26日燃烧器包括混合喷嘴，气体供给喷嘴和流动引导件。混合物喷嘴朝向炉内部延伸，并且限定了混合物通道，含有固体燃料和固体燃料的混合物的混合物通过该混合通道流动。混合喷嘴的远端部分展开，使得混合物通道的流动通道面积在混合物的流动方向上逐渐增加。气体供给喷嘴径向地包围混合喷嘴，以在气体供给喷嘴和混合喷嘴之间限定燃烧含氧气体通过其流向炉的气体通道。在混合喷嘴内，相对于混合物的流动，在混合喷嘴的扩口部分的上游位置处设置流动引导件，以使混合物沿着混合喷嘴的扩口部分的内周表面直线流动。

9. 发明申请

US20130319301A1 Spray Nozzle, and Combustion Device Having Spray Nozzle 审中-公开
标题翻译：喷嘴和喷头燃烧装置
公开(公告)号：US20130319301A1
公开(公告)日：2013-12-05
申请号：US13979340
申请日：2012-01-12
申请人： Hirofumi Okazaki , Koji Kuramashi , Hideo Okimoto , Akihito Orii , Kenichi Ochi
发明人： Hirofumi Okazaki , Koji Kuramashi , Hideo Okimoto , Akihito Orii , Kenichi Ochi
IPC分类号： F23D11/38 , F23D1/00 , F23K5/20 , B05B17/00
CPC分类号： F23D11/38 , B05B17/00 , F23C1/10 , F23C2201/101 , F23D1/005 , F23D2900/11001 , F23K5/20
摘要： A spray nozzle is provided with upper and lower channels and from respective surfaces, the two channels form a cross shape, and become a fuel spray hole by communication of an intersecting part. A guide member is provided, in contact with the upstream-side channel, in a position overlapped with the intersecting part with respect to the spray direction of the spray nozzle. Spray fluid is branched with the guide member from the fuel fluid duct connected to the spray nozzle, passes through the upstream-side channel, to the intersecting part, and is sprayed. The spray fluid forms opposed flows toward the intersecting part in the upstream-side channel to collide with each other at an obtuse angle of 90° or greater, then is sprayed from the intersecting part, to form a thin fan-shaped liquid film. The liquid film is divided by a shearing force from the peripheral gas, atomized into spray particles.
摘要翻译：喷嘴设有上通道和下通道，并且从相应的表面设置，两个通道形成十字形，并且通过相交部分的连通而成为燃料喷射孔。与上游侧通道接触地设置有与相对于喷嘴的喷射方向与交叉部分重叠的位置的引导部件。喷射流体通过引导构件从连接到喷嘴的燃料流体管道分支，穿过上游侧通道到达交叉部分，并被喷射。喷射流体朝向上游侧通道中的交叉部分形成相反的流动，以90°或更大的钝角相互碰撞，然后从交叉部分喷射，形成薄的扇形液体膜。液体膜被来自外围气体的剪切力除以雾化成喷雾颗粒。

10. 发明授权

US09476588B2 Boiler and operating method of same 有权
标题翻译：锅炉及其操作方法相同
公开(公告)号：US09476588B2
公开(公告)日：2016-10-25
申请号：US13877522
申请日：2011-10-21
申请人： Hirofumi Okazaki , Koji Kuramashi , Hideo Okimoto , Kenichi Ochi , Naoya Imooka , Pauli Dernjatin
发明人： Hirofumi Okazaki , Koji Kuramashi , Hideo Okimoto , Kenichi Ochi , Naoya Imooka , Pauli Dernjatin
IPC分类号： F23L7/00 , F23N3/00 , F23C9/00
CPC分类号： F23L7/007 , F23C9/00 , F23C9/003 , F23L2900/07001 , F23L2900/07005 , F23L2900/07006 , F23N3/002 , F23N2021/12 , F23N2037/26 , Y02E20/322 , Y02E20/344
摘要： A boiler operating method operates a boiler by switching between air combustion mode and oxygen combustion mode when burning fossil fuel with first combustion gas and second combustion gas. The second combustion gas compensates for oxygen deficiency in the first combustion gas. The air combustion mode uses air as the first combustion gas and the second combustion gas while the oxygen combustion mode uses mixed gas of combustion flue gas and oxygen-rich gas as the first combustion gas and the second combustion gas, the combustion flue gas being produced when the fossil fuel is burned. By mixing the oxygen-rich gas in the air in the process of switching between air combustion mode and oxygen combustion mode, the air being the first combustion gas used in the air combustion mode, the boiler operating method can switch between the air combustion mode and oxygen combustion mode while maintaining stable combustion.
摘要翻译：锅炉操作方法通过在用第一燃烧气体和第二燃烧气体燃烧化石燃料时，在空气燃烧模式和氧气燃烧模式之间切换来操作锅炉。第二燃烧气体补偿第一燃烧气体中的氧缺乏。空气燃烧模式使用空气作为第一燃烧气体和第二燃烧气体，而氧气燃烧模式使用燃烧烟道气和富氧气体的混合气体作为第一燃烧气体和第二燃烧气体，生成燃烧烟道气当化石燃料燃烧时。通过在空气燃烧模式和氧气燃烧模式之间切换过程中将富氧气体混合在空气中，作为在空气燃烧模式中使用的第一燃烧气体的空气，锅炉操作方法可以在空气燃烧模式和氧燃烧模式，同时保持燃烧稳定。

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