CN209024592U - Reduce the radiant tube heating system of discharged nitrous oxides - Google Patents
Reduce the radiant tube heating system of discharged nitrous oxides Download PDFInfo
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- CN209024592U CN209024592U CN201821609804.1U CN201821609804U CN209024592U CN 209024592 U CN209024592 U CN 209024592U CN 201821609804 U CN201821609804 U CN 201821609804U CN 209024592 U CN209024592 U CN 209024592U
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- radiant tube
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- nitrous oxides
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The utility model relates to a kind of radiant tube heating systems for reducing discharged nitrous oxides, including combustion fan, smoke exhaust fan, radiant tube and the radiation pipe burner tip to match, the exhanst gas outlet of radiant tube is connected to smoke exhaust fan entrance by smoke discharging pipe, smoke exhaust fan outlet a part is connected to chimney by discharge tube, another part is connected to combustion fan entrance by recovery channel, combustion fan entrance is also connect with the air pipeline for providing air, combustion fan exports the gaseous mixture entrance that radiation pipe burner tip is connected to by combustion-supporting pipeline, flue gas flow regulating valve and air flow rate adjustment valve are respectively equipped on recovery channel and air pipeline, combustion-supporting pipeline is equipped with mixed airflow adjustable valve.The utility model realizes the ultralow discharged nitrous oxides of radiant tube heating, improves the service life of radiant tube and radiation pipe burner tip, improves the thermal efficiency of radiant tube heating.
Description
Technical field
The utility model belongs to industrial gasses pollutant emission control field, and in particular to a kind of reduction discharged nitrous oxides
Radiant tube heating system.
Background technique
Nitrogen oxides (NOx) is to cause one of primary pollution source for the source of atmospheric pollution, can be to human body, animal or plant
Object causes intoxicating and detrimental effect, while being also one of acid rain, acid mist and main reason of photochemical fog, studies and administers
Discharged nitrous oxides are also a Main way in international pollution control field.
Currently, on Large Scale and Continuous strip heat-treatment furnace, to realize technique requirement while guaranteeing product quality, using radiation
Pipe carry out indirect heating using more and more, every set radiant tube has the radiation pipe burner tip to match, and radiation pipe burner tip is general
By burning and exchanging heat, two parts are formed, and combustion parts are responsible for tissue combustion gas and air realizes completely burned, and heat exchanging part is to spoke
It penetrates pipe discharge exhaust gas and carries out waste heat recycling, preheated burning gas.Radiation pipe burner tip burning belongs to restricted area burning, due to having a surplus
Recuperation of heat requires (usual radiation pipe burner tip air preheating temperature can reach 450 DEG C -550 DEG C), while radiant tube application furnace temperature
Higher (900-1050 DEG C), radiation combustion inner pipe temperature can reach close to 1200 DEG C, easily generation local high temperature zone, accelerate nitrogen oxygen
The generation of compound, therefore, in the case where country is increasingly stringenter discharged nitrous oxides index request, using adding for radiant tube
Hot stove discharged nitrous oxides are up to standard very difficult.
Utility model content
The purpose of the utility model is to provide a kind of radiant tube heating system for reducing discharged nitrous oxides, the utility model
The ultralow discharged nitrous oxides for realizing radiant tube heating, improve the service life of radiant tube and radiation pipe burner tip, improve
The thermal efficiency of radiant tube heating.
The technical scheme adopted by the utility model is
A kind of radiant tube heating system reducing discharged nitrous oxides, including combustion fan, smoke exhaust fan, radiant tube and phase
The exhanst gas outlet of matched radiation pipe burner tip, radiant tube is connected to smoke exhaust fan entrance, smoke exhaust fan outlet by smoke discharging pipe
A part is connected to chimney, another part by discharge tube and is connected to combustion fan entrance, combustion fan by recovery channel
Entrance is also connect with the air pipeline for providing air, and combustion fan outlet is connected to radiation pipe burner tip by combustion-supporting pipeline
Flue gas flow regulating valve and air flow rate adjustment valve, combustion tube are respectively equipped on gaseous mixture entrance, recovery channel and air pipeline
Road is equipped with mixed airflow adjustable valve.
Further, flue gas flow regulating valve and mixed airflow adjustable valve are combined with flow-through orifice.
Further, combustion-supporting pipeline is equipped with pressure detection mechanism and temperature testing organization.
Further, flue gas flow regulating valve and air flow rate adjustment valve reciprocal interlocking.
The beneficial effects of the utility model are:
Exhaust gas, which is mixed with, for combustion-supporting air forms gaseous mixture, after gaseous mixture is preheated by radiation pipe burner tip heat exchanging part,
It smokes gas, finally burns with combustion gas mixing, since oxygen content is significantly in secondary mixed air in radiant tube interior roll
It reduces, the generated flame that burns elongates, and the local high temperature zone of radiation pipe burner tip substantially reduces, burned flame maximum temperature
It is substantially reduced, the generation of nitrogen oxides is effectively inhibited, and the ultralow discharged nitrous oxides of radiant tube heating are realized；Mixing
After gas and flue gas carry out secondary blending, oxygen content is greatly lowered in secondary mixed air, the intensity quilt of flame combustion
It is greatly reduced, combustion flame is also elongated, and radiant tube surface temperature uniformity is substantially improved, and effectively promotes radiant tube and radiant tube
The service life of burner；After gaseous mixture and flue gas carry out secondary blending, effectively increase for combustion-supporting preheating of air temperature,
Improve the thermal efficiency of radiant tube heating.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model embodiment.
In figure: 1- mixed airflow adjustable valve；2- flow-through orifice；3- temperature testing organization；4- pressure detection mechanism；5- is helped
Fire blower；6- air flow rate adjustment valve；7- flue gas flow regulating valve；8- chimney；9- smoke exhaust fan；10- radiant tube and match
Radiation pipe burner tip.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of radiant tube heating system for reducing discharged nitrous oxides, including combustion fan 5, smoke exhaust fan
9, radiant tube and the radiation pipe burner tip 10 to match, the exhanst gas outlet of radiant tube are connected to smoke exhaust fan 9 by smoke discharging pipe and enter
Mouthful, smoke exhaust fan 9 export a part by discharge tube be connected to chimney 8, another part be connected to by recovery channel it is combustion-supporting
5 entrance of blower, 5 entrance of combustion fan are also connect with the air pipeline for providing air, and the outlet of combustion fan 5 passes through combustion tube
Road is connected to the gaseous mixture entrance of radiation pipe burner tip, and 7 He of flue gas flow regulating valve is respectively equipped on recovery channel and air pipeline
Air flow rate adjustment valve 6 content of gaseous mixture each component (adjust), combustion-supporting pipeline be equipped with mixed airflow adjustable valve 1 (according to
The needs of Actual combustion are adjusted).The principles of the present invention are: the flue gas of recycling radiant tube burning generation is simultaneously mixed with air
Gaseous mixture is formed after conjunction, gaseous mixture is sent into radiant tube, gaseous mixture first passes through the preheating of radiation pipe burner tip heat exchanging part, then is radiating
In radiant tube curls inward smoking gas under the jet injection effect of pipe burner, carries out secondary flue gas and blend to form secondary gaseous mixture, it is secondary
For gaseous mixture in radiation pipe burner tip combustion parts and fuel gas buring, the flue gas for generation of burning continues recycling circulation.
As shown in Figure 1, in the present embodiment, flue gas flow regulating valve 7 and mixed airflow adjustable valve 1 are combined with flow
Orifice plate 2.
As shown in Figure 1, in the present embodiment, combustion-supporting pipeline is equipped with pressure detection mechanism 4 and temperature testing organization 3, inspection
Survey the pressure and temperature of gaseous mixture.
In the present embodiment, 6 reciprocal interlocking of flue gas flow regulating valve 7 and air flow rate adjustment valve, facilitates operation.
In the present invention, exhaust gas being mixed with for combustion-supporting air and forming gaseous mixture, gaseous mixture passes through radiation pipe burner tip
After heat exchanging part preheating, in radiant tube interior roll smoking gas, finally burn with combustion gas mixing, due in secondary mixed air
Oxygen content is greatly lowered, and the generated flame that burns elongates, and the local high temperature zone of radiation pipe burner tip substantially reduces, burning
Peak flame temperature is also substantially reduced, and the generation of nitrogen oxides is effectively inhibited, and realizes the ultralow nitrogen of radiant tube heating
Emissions of oxides；After gaseous mixture and flue gas carry out secondary blending, oxygen content is greatly lowered in secondary mixed air, fire
The intensity of flame burning is greatly reduced, and combustion flame is also elongated, and radiant tube surface temperature uniformity is substantially improved, and is effectively promoted
The service life of radiant tube and radiation pipe burner tip；After gaseous mixture and flue gas carry out secondary blending, effectively increase for combustion-supporting
Preheating of air temperature improves the thermal efficiency of radiant tube heating.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations all should belong to the protection scope of the appended claims for the utility model.
Claims (4)
1. it is a kind of reduce discharged nitrous oxides radiant tube heating system, it is characterised in that: including combustion fan, smoke exhaust fan,
The exhanst gas outlet of radiant tube and the radiation pipe burner tip to match, radiant tube is connected to smoke exhaust fan entrance by smoke discharging pipe, row
Cigarette fan outlet a part is connected to chimney by discharge tube, another part is connected to combustion fan by recovery channel and enters
Mouthful, combustion fan entrance is also connect with the air pipeline for providing air, and combustion fan outlet is connected to by combustion-supporting pipeline
The gaseous mixture entrance of radiation pipe burner tip is respectively equipped with flue gas flow regulating valve and air mass flow tune on recovery channel and air pipeline
Valve is saved, combustion-supporting pipeline is equipped with mixed airflow adjustable valve.
2. reducing the radiant tube heating system of discharged nitrous oxides as described in claim 1, it is characterised in that: flue gas flow tune
Section valve and mixed airflow adjustable valve are combined with flow-through orifice.
3. reducing the radiant tube heating system of discharged nitrous oxides as described in claim 1, it is characterised in that: on combustion-supporting pipeline
Equipped with pressure detection mechanism and temperature testing organization.
4. reducing the radiant tube heating system of discharged nitrous oxides as described in claim 1, it is characterised in that: flue gas flow tune
Save valve and air flow rate adjustment valve reciprocal interlocking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821609804.1U CN209024592U (en) | 2018-09-29 | 2018-09-29 | Reduce the radiant tube heating system of discharged nitrous oxides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821609804.1U CN209024592U (en) | 2018-09-29 | 2018-09-29 | Reduce the radiant tube heating system of discharged nitrous oxides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209024592U true CN209024592U (en) | 2019-06-25 |
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ID=66905561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821609804.1U Active CN209024592U (en) | 2018-09-29 | 2018-09-29 | Reduce the radiant tube heating system of discharged nitrous oxides |
Country Status (1)
| Country | Link |
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| CN (1) | CN209024592U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109338053A (en) * | 2018-09-29 | 2019-02-15 | 中冶南方（武汉）热工有限公司 | Reduce the radiant tube heating system and method for discharged nitrous oxides |
| CN113182490A (en) * | 2021-05-08 | 2021-07-30 | 济南林青铸造技术有限公司 | Resin sand continuous heat regeneration roasting furnace and system |
| CN114214506A (en) * | 2022-02-21 | 2022-03-22 | 山西太钢不锈钢精密带钢有限公司 | Low-nitrogen combustion method for vertical annealing furnace |
-
2018
- 2018-09-29 CN CN201821609804.1U patent/CN209024592U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109338053A (en) * | 2018-09-29 | 2019-02-15 | 中冶南方（武汉）热工有限公司 | Reduce the radiant tube heating system and method for discharged nitrous oxides |
| CN113182490A (en) * | 2021-05-08 | 2021-07-30 | 济南林青铸造技术有限公司 | Resin sand continuous heat regeneration roasting furnace and system |
| CN114214506A (en) * | 2022-02-21 | 2022-03-22 | 山西太钢不锈钢精密带钢有限公司 | Low-nitrogen combustion method for vertical annealing furnace |
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