CN209558325U - A kind of heating furnace flue gas recirculation burner - Google Patents
A kind of heating furnace flue gas recirculation burner Download PDFInfo
- Publication number
- CN209558325U CN209558325U CN201920127890.0U CN201920127890U CN209558325U CN 209558325 U CN209558325 U CN 209558325U CN 201920127890 U CN201920127890 U CN 201920127890U CN 209558325 U CN209558325 U CN 209558325U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- combustion
- fan
- discharging pipe
- smoke discharging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model creation is related to a kind of heating furnace flue gas recirculation burner, it includes smoke discharging pipe, the flue gas branch pipe for being provided with connection combustion fan on the smoke discharging pipe and being sucked the low-temperature flue gas in the smoke discharging pipe by the suction of the combustion fan, the position of the nearly smoke discharging pipe is provided with blending flue gas flow regulating valve on the flue gas branch pipe, the position of the nearly combustion fan is provided with combustion-supporting air flow control valve on the flue gas branch pipe, the combustion fan is connected with for providing the combustion-supporting air piping of fresh air, the smoke discharging pipe is connected with smoke exhaust fan, the smoke exhaust fan is connected with the pipeline for blast furnace cigarette to be discharged, low-temperature flue gas in the smoke discharging pipe is under the attraction effect of combustion fan, enter flue gas branch pipe by blending flue gas flow regulating valve, the combustion-supporting air flow control valve enters new Fresh air is mixed into combustion fan, then through combustion fan blast combustion-supporting air piping carry out it is combustion-supporting；The utility model has the advantages that energy conservation and environmental protection, thermal NO generates and structurally reasonable in less burning.
Description
Technical field
The utility model belongs to the technical field of recuperative heater, and in particular to a kind of heating furnace is fired with flue gas recirculation
Burn device.
Background technique
Combustion gas is usually taken using the heating furnace of heat-accumulation combustion and high temperature air is sufficiently mixed after-combustion, the burning temperature of flame
Spend it is relatively high, to cause thermal NO largely to generate, for these shortcomings, it is necessary to develop a kind of completely new
Flue gas recirculation combustion system reduces existing flame temperature, to substantially reduce heat by reducing the content of oxygen in combustion air
The generation of power type nitrogen oxides；Therefore, develop that a kind of energy conservation and environmental protection, thermal NO generates in less burning and structure is closed
The heating furnace of reason is had a very important significance with flue gas recirculation burner.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and provide a kind of energy conservation and environmental protection, less burning
Middle thermal NO generates and structurally reasonable heating furnace flue gas recirculation burner.
Purpose of the utility model is realized as follows: a kind of heating furnace flue gas recirculation burner, it includes row
Smoke pipeline is provided with connection combustion fan on the smoke discharging pipe and by the suction of the combustion fan by the smoke discharging pipe
The flue gas branch pipe of interior low-temperature flue gas sucking, the position of the nearly smoke discharging pipe is provided with blending flue gas stream on the flue gas branch pipe
Adjustable valve, the position of the nearly combustion fan is provided with combustion-supporting air flow control valve, the combustion air on the flue gas branch pipe
Machine is connected with for providing the combustion-supporting air piping of fresh air.
The smoke discharging pipe is connected with smoke exhaust fan, and the smoke exhaust fan is connected with the pipeline for blast furnace cigarette to be discharged.
Low-temperature flue gas in the smoke discharging pipe is adjusted under the attraction effect of combustion fan by blending flue gas flow
Valve enters flue gas branch pipe.
The fresh air that the combustion-supporting air flow control valve enters is mixed into combustion fan, then blasts and help through combustion fan
It is combustion-supporting to fire air piping progress.
The utility model has the beneficial effects that the structural principle of the utility model is the setting flue gas branch pipe on smoke discharging pipe,
It is connected to the air inlet of combustion fan, in flue gas branch pipe close to the position of smoke discharging pipe setting blending flue gas flow regulating valve；In
Combustion-supporting air flow control valve is arranged close to the position of combustion fan in flue gas branch pipe.The low-temperature flue gas (≤150 that smoke discharging pipe 1 is discharged
DEG C) under the attraction effect of combustion fan, enter flue gas branch pipe by blending flue gas flow regulating valve, and from combustion-supporting wind flow
The fresh air that regulating valve enters is mixed into combustion fan, then through combustion fan blast combustion-supporting air piping 2 carry out it is combustion-supporting；Due to
A certain amount of flue gas is blended in combustion air, so the oxygen content in combustion air substantially reduces, thermal NO significantly drops
Low 50% or more；Therefore, the utility model has that energy conservation and environmental protection, thermal NO generates and structurally reasonable in less burning
The advantages of.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of heating furnace flue gas recirculation burner of the utility model.
Fig. 2 is a kind of flue gas circulation figure of heating furnace flue gas recirculation burner of the utility model.
In figure: 1, smoke discharging pipe 2, combustion-supporting air piping 3, blending flue gas flow regulating valve 4, combustion-supporting wind flow are adjusted
Valve 5, combustion fan 6, smoke exhaust fan 7, flue gas branch pipe.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
Embodiment 1
As shown in Figs. 1-2, a kind of heating furnace flue gas recirculation burner, it includes smoke discharging pipe 1, the smoke exhaust pipe
Connection combustion fan 5 is provided on road 1 and by the suction of the combustion fan 5 by the low-temperature flue gas in the smoke discharging pipe 1
The flue gas branch pipe 7 of sucking, the position of the nearly smoke discharging pipe 1 is provided with blending flue gas flow regulating valve on the flue gas branch pipe 7
3, the position of the nearly combustion fan 5 is provided with combustion-supporting air flow control valve 4 on the flue gas branch pipe 7, and the combustion fan 5 connects
It is connected to for providing the combustion-supporting air piping 2 of fresh air, the smoke discharging pipe 1 is connected with smoke exhaust fan 6, the smoke exhaust fan 6
It is connected with the pipeline for blast furnace cigarette to be discharged, the low-temperature flue gas in the smoke discharging pipe 1 is acted in the attraction of combustion fan 5
Under, flue gas branch pipe 7 is entered by blending flue gas flow regulating valve 3, the fresh air that the combustion-supporting air flow control valve 4 enters is mixed
Close enter combustion fan 5, then through combustion fan 5 blast combustion-supporting air piping 2 carry out it is combustion-supporting.
The utility model is designed using heat accumulating type flue gas recirculation burning structure, reduces heating power type nitrogen oxygen in combustion process
The generation of compound, is more advantageous to environmental protection, by installing blending flue gas flow regulating valve and combustion-supporting air flow control valve additional, also realizes section
The purpose of energy environmental protection；Specific principle is the setting flue gas branch pipe on smoke discharging pipe, the air inlet of combustion fan is connected to, in cigarette
Gas branch pipe is close to the position of smoke discharging pipe setting blending flue gas flow regulating valve；It is set in flue gas branch pipe close to the position of combustion fan
Set combustion-supporting air flow control valve.Smoke discharging pipe 1 be discharged low-temperature flue gas (≤150 DEG C) combustion fan attraction effect under,
Enter flue gas branch pipe by blending flue gas flow regulating valve, is mixed into the fresh air entered from combustion-supporting air flow control valve
Combustion fan, then through combustion fan blast combustion-supporting air piping 2 carry out it is combustion-supporting；Due to blending a certain amount of flue gas, institute in combustion air
It is substantially reduced with the oxygen content in combustion air, thermal NO is greatly lowered 50% or more；Therefore, the utility model has
Have the advantages that energy conservation and environmental protection, thermal NO generates and structurally reasonable in less burning.
Specific embodiment is the further explanation to the utility model rather than limits, and is come to those of ordinary skill in the art
It says and further transformation is done to structure in the case where not departing from the utility model in essence content, and all these transformation all should belong to
The protection scope of the appended claims for the utility model.
Claims (4)
1. a kind of heating furnace flue gas recirculation burner, it includes smoke discharging pipe, it is characterised in that: on the smoke discharging pipe
The cigarette for being provided with connection combustion fan and being sucked the low-temperature flue gas in the smoke discharging pipe by the suction of the combustion fan
Gas branch pipe, the position of the nearly smoke discharging pipe is provided with blending flue gas flow regulating valve, the flue gas branch on the flue gas branch pipe
The position of the nearly combustion fan is provided with combustion-supporting air flow control valve on pipe, and the combustion fan is connected with fresh for providing
The combustion-supporting air piping of air.
2. a kind of heating furnace flue gas recirculation burner according to claim 1, it is characterised in that: the smoke exhaust pipe
Road is connected with smoke exhaust fan, and the smoke exhaust fan is connected with the pipeline for blast furnace cigarette to be discharged.
3. a kind of heating furnace flue gas recirculation burner according to claim 1, it is characterised in that: the smoke exhaust pipe
Low-temperature flue gas in road enters flue gas branch pipe by blending flue gas flow regulating valve under the attraction effect of combustion fan.
4. a kind of heating furnace flue gas recirculation burner according to claim 1, it is characterised in that: the combustion air
The fresh air that flow control valve enters is mixed into combustion fan, then through combustion fan blast combustion-supporting air piping carry out it is combustion-supporting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920127890.0U CN209558325U (en) | 2019-01-25 | 2019-01-25 | A kind of heating furnace flue gas recirculation burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920127890.0U CN209558325U (en) | 2019-01-25 | 2019-01-25 | A kind of heating furnace flue gas recirculation burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209558325U true CN209558325U (en) | 2019-10-29 |
Family
ID=68307575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920127890.0U Active CN209558325U (en) | 2019-01-25 | 2019-01-25 | A kind of heating furnace flue gas recirculation burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209558325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212704A (en) * | 2020-10-27 | 2021-01-12 | 李秀梅 | Flue gas recirculation combustion control device of carbon roasting furnace |
-
2019
- 2019-01-25 CN CN201920127890.0U patent/CN209558325U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212704A (en) * | 2020-10-27 | 2021-01-12 | 李秀梅 | Flue gas recirculation combustion control device of carbon roasting furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204165045U (en) | Warm flue gas recirculation coal powder burner in one | |
| CN103727784B (en) | A kind of energy saving of system method of domestic ceramics oxygen-enriched combusting shuttle kiln | |
| CN102563687B (en) | Oxygen-enriched combustion system | |
| CN103088178B (en) | Blast furnace hot-blast stove flue gas self-circulation combustion method and system | |
| CN205746935U (en) | A kind of flue gas recirculation structure reducing gas fired-boiler burner hearth NO_x formation | |
| CN209558325U (en) | A kind of heating furnace flue gas recirculation burner | |
| CN102588997B (en) | Oxygen enriched combustion system | |
| CN207527571U (en) | A kind of natural gas boiler low nitrogen burning system | |
| CN109099721A (en) | Reduce the heating furnace heating system and method for discharged nitrous oxides | |
| CN202912990U (en) | Hot blast stove system | |
| CN204608065U (en) | A kind of exhaust gas of hot-blast stove pressurizing system | |
| CN216027046U (en) | Energy-saving equipment for in-situ gas thermal desorption, smoke oxygenation and reinjection of polluted site | |
| CN103940080B (en) | Based on the middle temperature low oxygen content hot-blast stove of coal dust low oxygen combustion technology | |
| CN201237353Y (en) | Heating stove for shed | |
| CN205372526U (en) | Biomass combustion furnace flue gas circulation system | |
| CN204534546U (en) | Biomass boiler environmental protection and energy saving control system | |
| CN107166428A (en) | A kind of grate firing boiler flue gas oxygen content control system based on flue gas recirculation | |
| CN210662822U (en) | Flue gas recirculation assists hierarchical air distribution boiler | |
| CN208418705U (en) | A kind of pyrolysis installation | |
| CN106847427A (en) | Paint baking oven hot wind exchanging type automatic cooling system | |
| CN112432491A (en) | Method and device for humidifying and increasing temperature of combustion-supporting air of hot blast stove | |
| CN206112909U (en) | Metal surface combustion system | |
| CN205939204U (en) | High -efficient low emission boiler gas recirculation device | |
| CN207006133U (en) | Low nitrogen pulverized coal combustion system | |
| CN206338851U (en) | A kind of heat radiation heating machine with heat exchange |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |