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公开(公告)号：US20240360995A1
公开(公告)日：2024-10-31
申请号：US18291769
申请日：2022-05-24
CPC分类号： F23D14/24 , B01J19/0013 , C01B3/047 , F23Q3/008 , B01J2219/00157
摘要： A combustor includes a combustion pipe, a gas introduction pipe, and an igniter. The gas introduction pipe is connected at one end of the gas introduction pipe to the combustion pipe, and the one end has a gas outlet through which ammonia and oxidized gas flow to the combustion pipe. The gas introduction pipe protrudes toward an inside of the combustion pipe through an insertion hole of the combustion pipe in a tangential direction to an inner peripheral surface of the combustion pipe so that the gas outlet is accommodated in the combustion pipe. The gas introduction pipe has a cross-sectional area that is defined so that mixed gas of the ammonia and the oxidized gas flows to the combustion pipe through the gas outlet at a flow velocity of 3 m/s to 25 m/s relative to a flow rate of the mixed gas.
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公开(公告)号：US20240151393A1
公开(公告)日：2024-05-09
申请号：US18550510
申请日：2022-03-17
申请人： Messer Austria GmbH
发明人： Martin Demuth
CPC分类号： F23D14/24 , F23C1/00 , F23C2900/9901
摘要： A burner for burning a hydrogen-containing fuel is equipped with a burner unit which comprises a fuel feed and a feed for a primary oxidant (oxygen) and which is accommodated in a feed for a secondary oxidant (air). A swirl device whose relative position with respect to the burner unit can be altered is provided in the feed for the secondary oxidant. The relative position of the burner unit and the swirl device may be controlled according to a composition of the fuel, in particular according to the water content thereof and the ratio of primary and secondary oxidant. The burner allows flexible adaptation of the burning to fuels of different composition, even during ongoing operation.
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公开(公告)号：US20230392783A1
公开(公告)日：2023-12-07
申请号：US18032179
申请日：2021-08-11
发明人： Lennart Felix , Anders Haevaker , Olle Lindman , Jan-Erik Lundgren , Simon Svanström , Marcus Oscarsson
CPC分类号： F23C1/08 , F23D11/383 , F23R3/36 , F23D14/24 , F23R2900/00001
摘要： A burner supply tube, and a burner arrangement having such a burner supply tube, which includes a tube wall extending having a tube diameter and at least one integrated fuel channel extending from a fuel input at an upstream tube end to a fuel output at a downstream tube end. To enable an integrated design, the fuel channel is along the majority of the tube length helical with a gradient of at least 0.5 times and at most 5 times the tube diameter.
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公开(公告)号：US20230366538A1
公开(公告)日：2023-11-16
申请号：US18030384
申请日：2021-10-06
发明人： David G. Schalles
摘要： A combustion burner using hydrogen as the primary fuel and including a burner housing, a hydrogen fuel conduit extending within the housing and defining a hydrogen fuel exit opening, a combustion air conduit extending within the housing and defining a combustion air exit opening, a hydrocarbon fuel conduit defining a hydrocarbon fuel exit opening, and a mixing/combustion zone in which the hydrogen fuel, the combustion air, and the hydrocarbon fuel mix and combustion takes place. The hydrocarbon fuel exit opening is positioned such that the hydrocarbon fuel is heated prior to mixing with the combustion air injected from the combustion air opening. Also, a method of firing a combustion burner using hydrogen as the primary fuel, where hydrogen fuel, combustion air, and hydrocarbon fuel are injected into a mixing/combustion zone of the combustion burner such that the hydrocarbon fuel is heated prior to mixing with the combustion air.
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公开(公告)号：US20230288056A1
公开(公告)日：2023-09-14
申请号：US17694271
申请日：2022-03-14
发明人： Yul E. Shaffer
CPC分类号： F23C3/002 , F23C6/047 , F23C9/006 , F23D14/24 , F23D14/60 , F23D14/70 , F23D2209/20 , F23D2900/14003 , F23D2900/14004
摘要： A cylindrical burner apparatus and method which produce low noise levels and are not dependent upon a blower, or natural draft, for providing combustion air flow. A flow of combustion air is induced into a rearward end of a burner tube and a swirling flame is produced in the tube by discharging a gas fuel from a plurality of discharge ports located in the tube.
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公开(公告)号：US11747014B2
公开(公告)日：2023-09-05
申请号：US17580504
申请日：2022-01-20
申请人： TSINGHUA UNIVERSITY
发明人： Shui-Qing Li , Min-Hang Song , Jin-Guo Sun , Qian Huang
摘要： The present application provides an atmosphere-adjustable multi-staged swirl ammonia burner, including a combustion structure, a tangential inflow structure, a secondary-air structure, and an ammonia adjustment structure. The combustion structure includes a swirl-flow pre-combustion chamber, a combustion housing, and a staged-flow adjustment assembly. The staged-flow adjustment assembly is configured to introduce staged airflows into the combustion chamber. The tangential inflow structure is configured to introduce air and fuel gas into the swirl-flow pre-combustion chamber. The secondary-air structure is disposed between the combustion housing and the tangential inflow structure. The ammonia adjustment structure extends through the tangential inflow structure to the combustion chamber and includes a branched inlet pipe and a central adjustment assembly. The branched inlet pipe is configured to introduce ammonia gas. The central adjustment assembly is configured to adjust a spray shape of the ammonia gas introduced from the branched inlet pipe.
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公开(公告)号：US20220136693A1
公开(公告)日：2022-05-05
申请号：US17573966
申请日：2022-01-12
发明人： Yul E. Shaffer
摘要： A cylindrical burner apparatus and method which produce low NOx emissions and low noise levels without being dependent upon a blower, or natural draft, for providing air flow. A flow of combustion air is induced into a cylindrical burner lube by discharging a gas fuel from a plurality of discharge ports located inside the rearward end of the tube. At least some of the discharge ports are oriented to direct jets of the gas fuel toward flame stabilization structures positioned downstream of the discharge ports.
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公开(公告)号：US20220082251A1
公开(公告)日：2022-03-17
申请号：US17471462
申请日：2021-09-10
申请人： RIELLO S.p.A.
摘要： A combustion head for a burner is provided with an outer sleeve, which houses, on the inside, a first feeding device to feed a gaseous fuel into an oxidizing air flow fed along the outer sleeve by means of a pneumatic ventilation device, at least one swirl device, which is configured to cause a primary flow F1 of gaseous fuel and oxidizing air flowing out of the outer sleeve to make a helical movement, and at least one feeding channel with an annular shape, which is obtained between the outer sleeve and the swirl device in order to feed a secondary flow F2 of oxidizing air around the primary flow F1; a second feeding device being mounted on the outside of the outer sleeve and being connected to a gaseous fuel source.
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公开(公告)号：US20220065444A1
公开(公告)日：2022-03-03
申请号：US17427007
申请日：2019-11-20
发明人： Senwei DAI , Renquan SUN , Zhuanbo REN , Liangyan SUN , Hongxing SUN
摘要： A low NOx air heating swirl burner includes at least one burner unit, the burner unit comprising a combustion air duct, a fuel gas supply pipeline, a combustion nozzle and a fire protection baffle. The fire protection baffle comprises a fin and a base plate for generating swirl combustion air. The base plate includes a plurality of elongated holes and air guide blades disposed obliquely on air outlet sides of the elongated holes. The combustion air flows out of the elongated holes in the base plate of the fire protection baffle, generates a rotational flow under the action of the air guide blades to be strongly mixed with fuel gas sprayed from the combustion nozzle for combustion. The burner is in a modular form, which can adopt a corresponding splicing shape according to structural features of a heating space to meet the heating requirement.
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公开(公告)号：US20220010957A1
公开(公告)日：2022-01-13
申请号：US16927610
申请日：2020-07-13
发明人： Yul E. Shaffer
摘要： A cylindrical burner apparatus and method which produce low NOx emissions and low noise levels without being dependent upon a blower, or natural draft, for providing air flow or flue gas recirculation. A flow of combustion air is induced into the initial tube pass of the burner by discharging a gas fuel from a plurality of discharge ports located in the initial tube pass. At the same time, a flow of recycled flue gas is induced through a bypass duct between a subsequent tube pass of the burner and the initial tube pass by discharging one or more jets of gas fuel through the bypass duct.
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