CN205504966U - Gas recirculation hangs down nitrogen stove - Google Patents
Gas recirculation hangs down nitrogen stove Download PDFInfo
- Publication number
- CN205504966U CN205504966U CN201620270786.3U CN201620270786U CN205504966U CN 205504966 U CN205504966 U CN 205504966U CN 201620270786 U CN201620270786 U CN 201620270786U CN 205504966 U CN205504966 U CN 205504966U
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- CN
- China
- Prior art keywords
- gas recirculation
- flue gas
- low
- flue
- recirculation passage
- 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.)
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Abstract
The utility model discloses a gas recirculation hangs down nitrogen stove. The boiler includes boiler body, and boiler body's rear end is equipped with the energy -saving appliance, the energy -saving appliance passes through the flue and communicates with the chimney one side of flue is external to have gas recirculation mechanism, gas recirculation mechanism is by the gas recirculation passageway to and install in proper order along airflow direction heat retainer on the gas recirculation passageway, automatically controlled governing valve, air -blower, defroster and low NOx burner constitute, the heat retainer presss from both sides the surface of dress at the gas recirculation passageway, the trap is connected to the lower extreme of defroster, be equipped with the low -pressure pressure switch on the pipeline between defroster and the low NOx burner. The utility model discloses reduce flame combustion temperature and nitrogen oxide and discharged, effectively avoided calorific loss to cause boiler efficiency to reduce, reduced the water smoke volume, the inside ponding problem of solution equipment, but the blowing out scheduling problem can not take place for combustor long -time running use, has prolonged life.
Description
Technical field
This utility model relates to flue gas recirculating technique field, particularly relates to a kind of flue gas recirculation low nitrogen stove.
Background technology
At present boiler combustion technology relates to low-nitrogen oxide discharging and considers 3 directions: one, flue gas recirculating technique, and two, low
The design application of nitrogen burner, three, the pre-treatment that fuel is mixed with air.For flue gas recirculating technique, existing burning is deposited
After flue gas mixes with air, produce substantial amounts of water droplet, blower fan and follow-up equipment are adversely affected, even low pressure switch
Channel blockage causes the problems such as regular blowing out, and for this problem, the technical matters of flue gas recirculating technique haves much room for improvement.Therefore,
A kind of flue gas recirculation new technique boiler is provided, is used for overcoming existing flue gas recirculation low nitrogen stove water accumulation of pipeline, fan efficiency to drop
Low, blower fan is fragile, easily cause the problems such as shutdown, thus reduces the generation of NOx, significant.
Utility model content
This utility model provides a kind of flue gas recirculation low nitrogen stove, overcomes EGR in existing boiler and easily produces water
, there is regular blowing out in mist in equipment running process, and thermal loss causes greatly boiler efficiency to reduce, and flue gas can not process completely,
The problem that nitrogen oxide emission is big.
The purpose of this utility model is achieved through the following technical solutions:
A kind of flue gas recirculation low nitrogen stove, including boiler body, it is characterised in that: the rear end of described boiler body is provided with energy-conservation
Device, described energy-saving appliance is connected with chimney by flue, is circumscribed with flue gas recirculation mechanism, described flue gas in the side of described flue
Re-circulation means by flue gas recirculation passage, and along airflow direction be sequentially arranged at the thermophore on described flue gas recirculation passage,
Electric controlled regulating valve, aerator, demister and low NO composition；Wherein, the front end of described flue gas recirculation passage connects cigarette
Road sidewall, the end of described flue gas recirculation passage connects low NO, and described thermophore is installed in flue gas recirculation passage
Outer surface, described aerator connects and has air intake, and the lower end of described demister connects drain valve, described demister and low nitrogen
Pipeline between burner is provided with low pressure switch.
The described front end of flue gas recirculation passage and the junction of flue sidewall are provided with temperature inductor and gas fume valve.
Described low pressure switch is inclined and mounted on the top of pipe interface.
Compared with prior art, this utility model at least has the advantage that
By above-mentioned the technical solution of the utility model, the flue gas produced after low NO burning is laggard through burner hearth and energy-saving appliance
Entering flue, temperature inductor measures the temperature of flue gas, and in flue, the flue gas between 120 degree of-250 degree enters flue gas recirculation passage
In, remaining discharges chimney, flue gas recirculation passage clamps thermophore and ensure that flue gas recycled carries out whole leading to before entering blower fan
The insulation in road, it is to avoid the loss of heat causes the reduction of boiler efficiency, and avoids this segment pipe temperature drop too much to produce water smoke；High
After temperature flue gas recycled mixes with the air of ambient temperature at blower fan, cause the mixed gas temperature of fan outlet slightly than environment temperature
Du Gaoyue about 20 degree, temperature declines the mixed gas substantial amounts of water smoke of generation directly contributing fan outlet, therefore after fan outlet
Design a supporting demister and carry out hydrophobic, solve blower fan to passage and the hydrops problem of burner between burner hearth；It addition, drum
Fan outlet is provided with the protection of combustion air pressure low-pressure between low NO, because there being larger amount of water smoke on this passage, easily makes
Becoming low pressure switch blocked inlet, cause low-voltage variation action, burner is shut down, and therefore tilts to install by low pressure switch
Above pipe interface, and make this low pressure switch interface on passage expand, interface towards combustion air flow direction,
Avoid producing and hang water smoke and the problem of pressure switch blocking.It is demonstrated experimentally that this equipment flue gas recirculation amount accounts for the 8%-23% of amount of flue gas emission
Between, can effectively reduce flame combustion temperature, reduce the discharge of nitrogen oxides.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of flue gas recirculation low nitrogen stove that this utility model embodiment provides.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model, the technical scheme in this utility model is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present utility model rather than whole embodiments.Based on this reality
By the embodiment in novel, the every other reality that those of ordinary skill in the art are obtained under not making creative work premise
Execute example, broadly fall into the scope of this utility model protection.
As it is shown in figure 1, a kind of flue gas recirculation low nitrogen stove proposed for this utility model embodiment, including boiler body 1,
The rear end of boiler body 1 is provided with energy-saving appliance 2, and energy-saving appliance 2 is connected with chimney 4 by flue 3, external in the side of flue 3
Having flue gas recirculation mechanism, flue gas recirculation mechanism is by flue gas recirculation passage 5, and is sequentially arranged at flue gas along airflow direction
Thermophore 6, electric controlled regulating valve 7, aerator 8, demister 9 and low NO 10 on recirculation line 5 form；Its
In, the front end of flue gas recirculation passage 5 connects flue 3 sidewall, and the end of flue gas recirculation passage 5 connects low NO 10,
Thermophore 6 is installed in the outer surface of flue gas recirculation passage 5, and aerator 8 connects air intake 11, demister 9 times
End connects drain valve 12, and the pipeline between demister 9 and low NO 10 is provided with low pressure switch 13.
Preferably, the front end of flue gas recirculation passage 5 is provided with temperature inductor and gas fume valve with the junction of flue 3 sidewall.
Preferably, low pressure switch 13 is inclined and mounted on the top of pipe interface.
Compared with prior art, this utility model at least has the advantage that
By above-mentioned the technical solution of the utility model, the flue gas produced after low NO burning is laggard through burner hearth and energy-saving appliance
Entering flue, temperature inductor measures the temperature of flue gas, and in flue, the flue gas between 120 degree of-250 degree enters flue gas recirculation passage
In, remaining discharges chimney, flue gas recirculation passage clamps thermophore and ensure that flue gas recycled carries out whole leading to before entering blower fan
The insulation in road, it is to avoid the loss of heat causes the reduction of boiler efficiency, and avoids this segment pipe temperature drop too much to produce water smoke；High
After temperature flue gas recycled mixes with the air of ambient temperature at blower fan, cause the mixed gas temperature of fan outlet slightly than environment temperature
Du Gaoyue about 20 degree, temperature declines the mixed gas substantial amounts of water smoke of generation directly contributing fan outlet, therefore after fan outlet
Design a supporting demister and carry out hydrophobic, solve blower fan to passage and the hydrops problem of burner between burner hearth；It addition, drum
Fan outlet is provided with the protection of combustion air pressure low-pressure between low NO, because there being larger amount of water smoke on this passage, easily makes
Becoming low pressure switch blocked inlet, cause low-voltage variation action, burner is shut down, and therefore tilts to install by low pressure switch
Above pipe interface, and make this low pressure switch interface on passage expand, interface towards combustion air flow direction,
Avoid producing and hang water smoke and the problem of pressure switch blocking.It is demonstrated experimentally that this equipment flue gas recirculation amount accounts for the 8%-23% of amount of flue gas emission
Between, can effectively reduce flame combustion temperature, reduce the discharge of nitrogen oxides.
The above, only this utility model preferably detailed description of the invention, but protection domain of the present utility model is not limited to
This, any those familiar with the art in the technical scope that this utility model discloses, the change that can readily occur in or
Replace, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be wanted with right
The protection domain seeking book is as the criterion.
Claims (3)
1. a flue gas recirculation low nitrogen stove, including boiler body, it is characterised in that: the rear end of described boiler body is provided with joint
Energy device, described energy-saving appliance is connected with chimney by flue, is circumscribed with flue gas recirculation mechanism, described cigarette in the side of described flue
Gas re-circulation means is by flue gas recirculation passage, and is sequentially arranged at the insulation on described flue gas recirculation passage along airflow direction
Device, electric controlled regulating valve, aerator, demister and low NO composition；Wherein, the front end of described flue gas recirculation passage is even
Connecing flue sidewall, the end of described flue gas recirculation passage connects low NO, and described thermophore is installed in flue gas recirculation and leads to
The outer surface in road, described aerator connects and has air intake, and the lower end of described demister connects drain valve, described demister with
Pipeline between low NO is provided with low pressure switch.
2. flue gas recirculation low nitrogen stove as claimed in claim 1, it is characterised in that: the front end of described flue gas recirculation passage
With the junction of flue sidewall, temperature inductor and gas fume valve are installed.
3. flue gas recirculation low nitrogen stove as claimed in claim 1, it is characterised in that: described low pressure switch tilts to install
Above pipe interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620270786.3U CN205504966U (en) | 2016-04-01 | 2016-04-01 | Gas recirculation hangs down nitrogen stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620270786.3U CN205504966U (en) | 2016-04-01 | 2016-04-01 | Gas recirculation hangs down nitrogen stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205504966U true CN205504966U (en) | 2016-08-24 |
Family
ID=56735167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620270786.3U Expired - Fee Related CN205504966U (en) | 2016-04-01 | 2016-04-01 | Gas recirculation hangs down nitrogen stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205504966U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763612A (en) * | 2017-11-28 | 2018-03-06 | 湖南长宏南雁锅炉修理安装有限公司 | Reduce the method for nitrogen oxides and its low nitrogen type shell boiler in boiler smoke |
| CN107781829A (en) * | 2017-11-23 | 2018-03-09 | 西安昱昌环境科技有限公司 | A kind of rotation RTO bodies of heater and its heat preserving method that can realize interim blowing out insulation |
| CN108050850A (en) * | 2017-11-02 | 2018-05-18 | 武汉东晟捷能科技有限公司 | A kind of yellow phosphoric tail gas boiler flue gas purification system and purification method |
| CN108302947A (en) * | 2018-01-29 | 2018-07-20 | 武汉东晟捷能科技有限公司 | A kind of titanium dioxide calcining comprehensive utilization system for tail-gas and exhaust gas treating method |
| CN109855088A (en) * | 2019-03-15 | 2019-06-07 | 奥林佩亚节能科技(滁州)有限公司 | A kind of low nitrogen electric reconstruction method of combustor |
| KR102151572B1 (en) * | 2019-02-27 | 2020-09-03 | 김치호 | Hot water boiler |
-
2016
- 2016-04-01 CN CN201620270786.3U patent/CN205504966U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050850A (en) * | 2017-11-02 | 2018-05-18 | 武汉东晟捷能科技有限公司 | A kind of yellow phosphoric tail gas boiler flue gas purification system and purification method |
| CN107781829A (en) * | 2017-11-23 | 2018-03-09 | 西安昱昌环境科技有限公司 | A kind of rotation RTO bodies of heater and its heat preserving method that can realize interim blowing out insulation |
| CN107781829B (en) * | 2017-11-23 | 2023-12-01 | 西安昱昌环境科技有限公司 | Rotary RTO furnace body capable of realizing temporary furnace shutdown heat preservation and heat preservation method thereof |
| CN107763612A (en) * | 2017-11-28 | 2018-03-06 | 湖南长宏南雁锅炉修理安装有限公司 | Reduce the method for nitrogen oxides and its low nitrogen type shell boiler in boiler smoke |
| CN108302947A (en) * | 2018-01-29 | 2018-07-20 | 武汉东晟捷能科技有限公司 | A kind of titanium dioxide calcining comprehensive utilization system for tail-gas and exhaust gas treating method |
| KR102151572B1 (en) * | 2019-02-27 | 2020-09-03 | 김치호 | Hot water boiler |
| CN109855088A (en) * | 2019-03-15 | 2019-06-07 | 奥林佩亚节能科技(滁州)有限公司 | A kind of low nitrogen electric reconstruction method of combustor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20180401 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |