CN217403158U - Gas furnace capable of reducing nitrogen oxide emission - Google Patents
Gas furnace capable of reducing nitrogen oxide emission Download PDFInfo
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- CN217403158U CN217403158U CN202220520701.8U CN202220520701U CN217403158U CN 217403158 U CN217403158 U CN 217403158U CN 202220520701 U CN202220520701 U CN 202220520701U CN 217403158 U CN217403158 U CN 217403158U
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Abstract
The utility model discloses a reduce gas furnace that oxynitrides discharged, including furnace body and furnace gate, the peripheral nitrogen gas pipeline of having arranged in furnace gate entrance to a cave of furnace body, be provided with a plurality of nozzles on the nitrogen gas pipeline, the opening orientation of nozzle the furnace gate entrance to a cave. The utility model discloses a gas furnace that reduction oxynitrides discharged arranges the nozzle of a plurality of openings orientation furnace gate entrance to a cave at the furnace gate entrance periphery of furnace body for nitrogen gas has formed the nitrogen gas screen with sectorial air current between furnace gate entrance and outside air, oxygen in making the furnace gate open state air also can't get into furnace, even have higher temperature in the furnace, owing to not having rich oxygen, consequently can not form oxynitride, thereby nitrogen oxide's formation and emission have been reduced, atmospheric pollution has been reduced.
Description
Technical Field
The utility model belongs to the technical field of gas furnace, especially, relate to a reduce gas furnace that oxynitrides discharged.
Background
The industrial gas furnace is widely used for heat treatment of high-chromium and high-manganese steel castings, such as annealing, tempering, aging and the like, and for heat treatment of grey cast iron, nodular cast iron, rollers, steel balls, crusher hammers, wear-resistant lining plates, quenching, normalizing, tempering, annealing, aging and various mechanical parts. The burner in the industrial furnace mixes and burns fuel with combustion-supporting gas in the flue brick to generate higher temperature in the furnace, and the high temperature causes the easy generation of nitrogen oxide in the flue gas product after burning. Chinese patent CN211925746U discloses an ultra-low nitrogen emission burner, which improves the mixing uniformity and combustion abundance between combustion-supporting gas and fuel gas by mixing in a mixing box, and reduces the generation of oxynitride. However, after the gas furnace is finished, the furnace door needs to be opened, and in the process of opening the furnace door, oxygen and nitrogen in the air enter the furnace, and at the moment, the temperature in the furnace is high, and oxynitride can be generated, so that air pollution is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reduce gas furnace that oxynitrides discharged.
The technical scheme of the utility model is that:
the utility model provides a reduce gas furnace that oxynitrides discharged, includes furnace body and furnace gate, the peripheral nitrogen gas pipeline of having arranged in furnace gate entrance to a cave of furnace body, be provided with a plurality of nozzles on the nitrogen gas pipeline, the opening orientation of nozzle the furnace gate entrance to a cave.
Preferably, a pipeline fixing hoop is arranged on the furnace body and used for fixing the nitrogen pipeline.
Preferably, the distance between the plurality of nozzles along the periphery of the furnace door opening is 5-10 cm.
Preferably, the nozzle is a flat mouth.
Preferably, the gas furnace for reducing the emission of nitrogen oxides further comprises a combustion fan and a combustion air pipeline, and the combustion fan supplies air to a burner in the furnace body through the combustion air pipeline.
The beneficial effects of the utility model are that:
the utility model discloses a gas furnace that reduction oxynitrides discharged arranges the nozzle of a plurality of openings orientation furnace gate entrance to a cave at the furnace gate entrance periphery of furnace body for nitrogen gas has formed the nitrogen gas screen with sectorial air current between furnace gate entrance and outside air, oxygen in making the furnace gate open state air also can't get into furnace, even have higher temperature in the furnace, owing to not having rich oxygen, consequently can not form oxynitride, thereby nitrogen oxide's formation and emission have been reduced, atmospheric pollution has been reduced.
Drawings
Fig. 1 is a schematic structural view of the gas furnace for reducing the emission of nitrogen oxides of the present invention.
Fig. 2 is a right sectional view of fig. 1.
Fig. 3 is an enlarged view of fig. 2 at a.
In the figure:
1. a furnace body; 11. a furnace door; 12. a furnace door opening; 13. a hearth; 2. a nitrogen gas pipeline; 21. a nitrogen inlet; 22. a nozzle; 23. a nitrogen gas stream; 3. a pipe fixing hoop; 5. a combustion air duct; 6. a combustion-supporting fan.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a schematic view of the gas furnace for reducing nitrogen oxide emission according to the present invention, and fig. 2 is a right sectional view of fig. 1.
As shown in fig. 1 and 2, the utility model discloses a gas furnace for reducing oxynitride discharges, including furnace body 1 and furnace gate 11, nitrogen gas pipeline 2 has been arranged to furnace gate entrance to a cave 12 periphery of furnace body 1, be provided with a plurality of nozzles 22 on the nitrogen gas pipeline 2, the opening orientation of nozzle 22 furnace gate entrance to a cave 12.
The working principle is as follows:
the utility model discloses a reduce gas furnace that oxynitrides discharged is provided with a plurality of openings on the nitrogen gas pipeline 2 of arranging around furnace gate entrance to a cave 12 of its furnace body 1 towards the nozzle 22 of furnace gate entrance to a cave 12, and nitrogen gas flows into nozzle 22 through nitrogen gas pipeline 2 and spouts with sectorial air current again to formed the nitrogen gas screen between furnace gate entrance to a cave 12 and outside air, even furnace gate 11 is opening the state, in the oxygen in the air also can't get into furnace 13. Therefore, when the workpiece enters the furnace 13 and the workpiece is taken out of the furnace 13, the oxygen in the air cannot enter the furnace 13 when the door 11 is opened, and no nitrogen oxide is formed because of no abundant oxygen even if the temperature in the furnace 13 is high, thereby reducing the generation and emission of nitrogen oxide and reducing the pollution to the atmosphere.
Preferably, a pipeline fixing hoop 3 is arranged on the furnace body 1, and the pipeline fixing hoop 3 is used for fixing the nitrogen pipeline 2. The nitrogen pipeline 2 is fixed by the pipeline fixing hoop 3, so that the nitrogen pipeline 2 is arranged along the furnace door opening 12, the distance between the nozzle 22 and the furnace door opening 12 is smaller and consistent, and the sprayed nitrogen airflow can better form a complete nitrogen screen.
Preferably, the plurality of nozzles 22 are spaced 5-10cm apart along the periphery of the oven door opening 12. The nozzles are arranged at the peripheral interval of 5-10cm of the furnace door opening 12, so that the integrity of the formed nitrogen screen can be better guaranteed, and nitrogen is not wasted.
Preferably, the nozzle 22 is a flat mouth. By using a flat nozzle and making the flat direction of the nozzle parallel to the plane of the furnace door opening 12, a nitrogen screen with higher pressure and more integrity can be formed.
Preferably, the gas furnace for reducing the emission of nitrogen oxides further comprises a combustion fan 6 and a combustion air pipeline 5, wherein the combustion fan 6 supplies air to the burner in the furnace body 1 through the combustion air pipeline 5. Set up combustion-supporting fan 6 and during mending the combustor with the air, help the utility model discloses a reduce the condition of burning in the furnace chamber is controlled better to the gas furnace that oxynitrides discharged.
It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. All other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present invention.
Claims (5)
1. The utility model provides a reduce gas furnace that oxynitrides discharged, includes furnace body and furnace gate, its characterized in that, the peripheral nitrogen gas pipeline that has arranged in furnace gate entrance to a cave of furnace body, be provided with a plurality of nozzles on the nitrogen gas pipeline, the opening orientation of nozzle the furnace gate entrance to a cave.
2. A gas furnace for reducing the emission of nitrogen oxides as recited in claim 1, wherein said furnace body is provided with a pipe fixing collar for fixing said nitrogen gas pipe.
3. A gas burner for reducing nox emissions as claimed in claim 1, wherein a plurality of said nozzles are spaced apart by 5-10cm along the periphery of said door opening.
4. A gas burner for reducing nox emissions as set forth in claim 1 wherein said burner is a flat port.
5. A gas furnace for reducing nitrogen oxide emissions according to any one of claims 1 to 4, further comprising a combustion fan and a combustion air duct, said combustion fan supplying air to burners in said body through said combustion air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220520701.8U CN217403158U (en) | 2022-03-11 | 2022-03-11 | Gas furnace capable of reducing nitrogen oxide emission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220520701.8U CN217403158U (en) | 2022-03-11 | 2022-03-11 | Gas furnace capable of reducing nitrogen oxide emission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217403158U true CN217403158U (en) | 2022-09-09 |
Family
ID=83138017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220520701.8U Active CN217403158U (en) | 2022-03-11 | 2022-03-11 | Gas furnace capable of reducing nitrogen oxide emission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217403158U (en) |
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2022
- 2022-03-11 CN CN202220520701.8U patent/CN217403158U/en active Active
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