CN206803131U - Boiler-burner protection device - Google Patents
Boiler-burner protection device Download PDFInfo
- Publication number
- CN206803131U CN206803131U CN201720458681.5U CN201720458681U CN206803131U CN 206803131 U CN206803131 U CN 206803131U CN 201720458681 U CN201720458681 U CN 201720458681U CN 206803131 U CN206803131 U CN 206803131U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- temperature flue
- burner
- heat exchanger
- drying unit
- 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
- 239000003546 flue gas Substances 0.000 claims abstract description 47
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000001035 drying Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The utility model discloses a kind of boiler-burner protection device, including heat exchanger, the arrival end of the heat exchanger high temperature flue connects with back-end ductwork, the port of export connects with drying unit；The arrival end of the heat exchanger low-temperature flue gas passage is connected with drying unit, the port of export connects with burner, and mixing arrangement is connected with the passage between heat exchanger high-temperature flue gas outlet end and drying unit.The water droplets that the overwhelming majority separates out can so be removed in flue gas, the surface of the part such as the water droplet for preventing from condensing and burner draught fan impeller contacts, and substantially prolongs the service life of burner.
Description
Technical field
Gas fired-boiler field is the utility model is related to, specially a kind of protection device of burner for gas boiler.
Background technology
For natural gas boiler, Nox caused by the nitrogen and excessive oxygen of Nox generation in air,
NOx generation and ignition temperature exponentially type relation, generally start to produce when ignition temperature is higher than 1000 degrees Celsius, and
NOx formation speed can sharply increase more than 1400 degree.Therefore, control NOx to produce the oxygen mainly reduced in boiler to contain
Amount, to reduce the oxygen concentration in gaseous mixture, prevents ignition temperature from becoming too high.
Flue gas recirculation is to suppress one kind of discharged nitrous oxides technology in boiler smoke, i.e., returns to part of smoke
Plenum system, extract gas at normal temperature and mixed with high-temperature flue gas, to reduce the oxygen concentration in gaseous mixture, prevent ignition temperature from becoming
Height, so as to suppress the generation of nitrogen oxides.
But in flue gas recirculating technique, high-temperature flue gas obtains low-temperature mixed gas, high temperature cigarette after being mixed with normal temperature air
Temperature degree, which reduces, causes a large amount of water vapor condensations in flue gas into water droplet, if low-temperature flue gas is delivered in burner, water droplet
Contacted with the surface of the part such as burner draught fan impeller, under oxygen-enriched environment, easily cause combustor component to be damaged after corroding, greatly
The big service life for shortening burner.
Utility model content
The purpose of this utility model is to provide a kind of boiler-burner protection device, and greatly prolong burner uses the longevity
Life.
To achieve these goals, the technical scheme used for：A kind of boiler-burner protection device, including heat exchanger,
The arrival end of the heat exchanger high temperature flue connects with back-end ductwork, the port of export connects with drying unit；The heat exchanger
The arrival end of low-temperature flue gas passage connects with drying unit, the port of export connects with burner, heat exchanger high-temperature flue gas outlet end with
Mixing arrangement is connected with passage between drying unit.
Compared with prior art, technique effect of the present utility model is：Back-end ductwork discharges 200 DEG C of high-temperature flue gas, first
First, 200 DEG C of high-temperature flue gas is entered after exchanger heat exchanges by the arrival end of heat exchanger high temperature flue is reduced to 110 DEG C
Medium temperature flue gas；Secondly, 110 DEG C of medium temperature flue gases enter mixing arrangement, mixing arrangement by the port of export of heat exchanger high temperature flue
20 DEG C of normal temperature airs and 110 DEG C of medium temperature flue gases are mixed to get 80 DEG C of low-temperature flue gas, now separated out in 80 DEG C of low-temperature flue gas a large amount of
Small water droplet；Again, 80 DEG C of low-temperature flue gas, which enter after drying unit is dried, removes the water droplet that the overwhelming majority separates out；Then, 80 DEG C
The high-temperature flue gas that low-temperature flue gas enters in heat exchanger with 200 DEG C carries out heat exchange, and 80 DEG C of low-temperature flue gas are warming up to 90 DEG C of low temperature cigarettes
Gas, because low-temperature flue gas temperature raises, a small amount of water droplet heat absorption is vaporized into vapor；Finally, 90 DEG C of flue gases are sent into burner.
The water droplet that the overwhelming majority separates out in flue gas can be so removed, prevents the table of the parts such as water droplet and the burner draught fan impeller of condensation
Face contacts, and substantially prolongs the service life of burner.
Brief description of the drawings
Fig. 1 is fundamental diagram of the present utility model.
Embodiment
The utility model is described in further detail with reference to Fig. 1.
A kind of boiler-burner protection device, including heat exchanger 10, the arrival end of the high temperature flue of heat exchanger 10
Connected with back-end ductwork 1, the port of export connects with drying unit 20；The arrival end of the low-temperature flue gas passage of heat exchanger 10 and drying
Unit 20 connects, the port of export connects with burner 30, the passage between the high-temperature flue gas outlet end of heat exchanger 10 and drying unit 20
On be connected with mixing arrangement 40.
In such scheme, back-end ductwork 1 discharges 200 DEG C of high-temperature flue gas, and first, 200 DEG C of high-temperature flue gas is by heat exchanger
The arrival end of 10 high temperature flues is reduced to 110 DEG C of medium temperature flue gas after entering the heat exchange of heat exchanger 10；Secondly, in 110 DEG C
Warm flue gas enters mixing arrangement 40 by the port of export of the high temperature flue of heat exchanger 10, mixing arrangement 40 by 20 DEG C of normal temperature airs with
110 DEG C of medium temperature flue gases are mixed to get 80 DEG C of low-temperature flue gas, and substantial amounts of small water droplet is now separated out in 80 DEG C of low-temperature flue gas；Again, 80
DEG C low-temperature flue gas, which enters after drying unit 20 is dried, removes the water droplets that the overwhelming majority separates out；Then, 80 DEG C of low-temperature flue gas, which enter, changes
High-temperature flue gas in hot device 10 with 200 DEG C carries out heat exchange, and 80 DEG C of low-temperature flue gas are warming up to 90 DEG C of low-temperature flue gas, due to low temperature cigarette
Temperature degree raises, and a small amount of water droplet heat absorption is vaporized into vapor；Finally, 90 DEG C of flue gases are sent into burner 30.It can so remove
The surface of the parts such as the water droplets for going in flue gas the overwhelming majority to separate out, the water droplet for preventing from condensing and burner draught fan impeller contacts, greatly
The big service life for extending burner.
Preferably, the drying unit 20 is louver separator.Drying unit 20 has multiple choices scheme,
The louver separator that the utility model is selected efficiently can remove the water droplet separated out in 80 DEG C of low-temperature flue gas, ensure 80
Dry flue gas is obtained after the heat absorption heating of DEG C low-temperature flue gas.
Claims (2)
- A kind of 1. boiler-burner protection device, it is characterised in that：Including heat exchanger (10), heat exchanger (10) high-temperature flue gas The arrival end of passage connects with back-end ductwork (1), the port of export connects with drying unit (20)；Heat exchanger (10) low-temperature flue gas The arrival end of passage connects with drying unit (20), the port of export connects with burner (30), heat exchanger (10) high-temperature flue gas outlet Mixing arrangement (40) is connected with passage between end and drying unit (20).
- 2. boiler-burner protection device according to claim 1, it is characterised in that：The drying unit (20) is blinds Window separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720458681.5U CN206803131U (en) | 2017-04-27 | 2017-04-27 | Boiler-burner protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720458681.5U CN206803131U (en) | 2017-04-27 | 2017-04-27 | Boiler-burner protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206803131U true CN206803131U (en) | 2017-12-26 |
Family
ID=60738749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720458681.5U Active CN206803131U (en) | 2017-04-27 | 2017-04-27 | Boiler-burner protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206803131U (en) |
-
2017
- 2017-04-27 CN CN201720458681.5U patent/CN206803131U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |