CN110307559A - A kind of low-nitrogen discharged combustion system of heating furnace - Google Patents
A kind of low-nitrogen discharged combustion system of heating furnace Download PDFInfo
- Publication number
- CN110307559A CN110307559A CN201910599097.5A CN201910599097A CN110307559A CN 110307559 A CN110307559 A CN 110307559A CN 201910599097 A CN201910599097 A CN 201910599097A CN 110307559 A CN110307559 A CN 110307559A
- Authority
- CN
- China
- Prior art keywords
- smoke
- combustion
- heating furnace
- inner sleeve
- air inlet
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 53
- 238000010438 heat treatment Methods 0.000 title claims abstract description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 17
- 239000000779 smoke Substances 0.000 claims abstract description 44
- 239000007789 gas Substances 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 6
- 239000001301 oxygen Substances 0.000 abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 206010020843 Hyperthermia Diseases 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L5/00—Blast-producing apparatus before the fire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
-
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
Abstract
The present invention relates to a kind of low-nitrogen discharged combustion systems of heating furnace, it includes combustion chamber (1) and heat exchanger (2), combustor (3) are provided in the combustion chamber (1), the heat exchanger (2) includes smoke inlet (3.1), smoke outlet (3.2), air inlet (3.3) and air outlet (3.4), chimney component (4) and combustion fan (5) are provided with outside the heat exchanger (2), the air inlet (3.3) is connected with the air inlet (5.1) of combustion fan (5), the exhaust outlet (5.2) of the combustion fan (5) is connected with chimney component (4), the air outlet (3.4) is connected with combustor (2).A kind of low-nitrogen discharged combustion system of heating furnace of the present invention, its combustion fan is connected with chimney component, on the one hand can carry out reuse to chimney emission heat, on the other hand can adjust the oxygen content of combustor air inlet, to which the discharge for reducing NOx be effectively reduced, meet national environmental standard requirement.
Description
Technical field
The present invention relates to a kind of low-nitrogen discharged combustion systems of heating furnace, belong to aluminum profile production equipment technology.
Background technique
In The Atmosphere Over China pollution is got worse, and especially haze brings very big puzzlement to the life and work of the mankind, is seriously endangered
Human health.The main arch-criminal's first is that oxynitrides for causing atmosphere pollution, it is very urgent to administer nitrogen oxides.Country mentions
Clean combustion out creates Blue Sky, and has formulated related environmental protection standard, and limits discharged nitrous oxides increasingly strict.
It is studied according to related data, the NOx that fuel gas buring generates is broadly divided into thermal NO x, Quick-type NOx and fuel type
NOx.The nitrogen mainly in fuel that causes NOx to generate, localized hyperthermia, gas residence time, the reasons such as oxygen-enriched combusting.Mesh
Preceding aluminum-bar heating furnace combustion system in the market is not under the conditions of reducing heater efficiency, it is difficult to meet the related environmental protection standard of country
Requirement.Therefore, it is necessary to which the combustion system to heating furnace is transformed and is upgraded accordingly, the discharge of NOx is reduced, ring is met
Guaranteed request.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of low-nitrogen discharged burning of heating furnace for the above-mentioned prior art
System, combustion fan are connected with chimney component, on the one hand can carry out reuse to chimney emission heat, on the other hand can adjust
The oxygen content for saving combustor air inlet, can be effectively reduced the discharge of heating furnace NOx, to meet national environmental standard requirement.
The present invention solves the above problems used technical solution are as follows: a kind of low-nitrogen discharged combustion system of heating furnace, it is wrapped
Combustion chamber and heat exchanger are included, combustor is provided in the combustion chamber, the heat exchanger includes smoke inlet, smoke outlet, air inlet
And air outlet, the heat exchanger are provided with chimney component and combustion fan outside, the smoke inlet passes through smoke-intake pipe and combustion chamber phase
Connection, the smoke outlet are connected by smoke exhaust pipe with chimney component, and the air inlet passes through the suction of blast pipe and combustion fan
Air port is connected, and the exhaust outlet of the combustion fan is connected by aspiration channel with chimney component, and the air outlet passes through combustion-supporting
Air hose is connected with combustor.
Further, the heat exchanger is located at immediately below combustion chamber.
Further, the chimney component includes supporting box, and the supporting box is transversely coated with chimney into cigarette
Pipe, the supporting box top are provided with inner sleeve and outer tube, and chimney smoke-intake pipe one end is connected with smoke exhaust pipe, another
End is connected with inner sleeve lower end, forms separate space between the inner sleeve and outer tube, the separate space upper end opening lower end closed,
The inner sleeve lower part offers a circle exhaust smoke hole, and the outer tube offers return air inlet in exhaust smoke hole corresponding position, described
Return air inlet is connected with aspiration channel.
Further, the inner sleeve top is provided with upper beam, and pull rod, the pull rod are coated on the upper beam
Upper end is connected by nut with upper beam, and the pull rod lower end is fixedly installed lower beam, and fixation is set on the outside of the lower beam
It is equipped with lantern ring, the lantern ring is matched with exhaust smoke hole.
Further, it is connected between the inner sleeve and outer tube top by multiple link blocks.
Further, the outer tube top is provided with smoke gas detecting pipe, and the smoke gas detecting pipe is connected with inner sleeve
It is logical.
Compared with the prior art, the advantages of the present invention are as follows:
A kind of low-nitrogen discharged combustion system of heating furnace of the present invention, combustion fan are connected with chimney component, on the one hand can
Reuse is carried out to chimney emission heat, on the other hand can adjust the oxygen content of combustor air inlet, so that being effectively reduced reduces NOx
Discharge, meet national environmental standard requirement.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the low-nitrogen discharged combustion system of heating furnace of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the stereoscopic schematic diagram of chimney component in Fig. 1.
Fig. 4 is the schematic diagram of internal structure of chimney component in Fig. 1.
Fig. 5 is the side view of Fig. 4.
Wherein:
Combustion chamber 1
Heat exchanger 2
Combustor 3
Smoke inlet 3.1
Smoke outlet 3.2
Air inlet 3.3
Air outlet 3.4
Chimney component 4
Supporting box 4.1
Chimney smoke-intake pipe 4.2
Inner sleeve 4.3
Outer tube 4.4
Separate space 4.5
Exhaust smoke hole 4.6
Return air inlet 4.7
Upper beam 4.8
Pull rod 4.9
Nut 4.10
Lower beam 4.11
Lantern ring 4.12
Link block 4.13
Smoke gas detecting pipe 4.14
Combustion fan 5
Air inlet 5.1
Exhaust outlet 5.2
Smoke-intake pipe 6
Smoke exhaust pipe 7
Blast pipe 8
Aspiration channel 9
Combustion-supporting air hose 10.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1~fig. 5, the low-nitrogen discharged combustion system of one of the present embodiment heating furnace, it includes 1 He of combustion chamber
Heat exchanger 2, combustor 3 is provided in the combustion chamber 1, and the heat exchanger 2 includes smoke inlet 3.1, smoke outlet 3.2, air inlet
3.3 and air outlet 3.4, it is provided with chimney component 4 and combustion fan 5 outside the heat exchanger 2, the smoke inlet 3.1 is by into cigarette
Pipe 6 is connected with combustion chamber 1, and the smoke outlet 3.2 is connected by smoke exhaust pipe 7 with chimney component 4, and the air inlet 3.3 is logical
It crosses blast pipe 8 to be connected with the air inlet 5.1 of combustion fan 5, the exhaust outlet 5.2 of the combustion fan 5 passes through aspiration channel 9 and cigarette
Chimney component 4 is connected, and the air outlet 3.4 is connected by combustion-supporting air hose 10 with combustor 2；
The heat exchanger 2 is located at immediately below combustion chamber 1；
The chimney component 4 includes supporting box 4.1, and the supporting box 4.1 is transversely coated with chimney smoke-intake pipe
4.2, inner sleeve 4.3 and outer tube 4.4, described 4.2 one end of chimney smoke-intake pipe and smoke evacuation are provided at the top of the supporting box 4.1
Pipe 7 is connected, and the other end is connected with 4.3 lower end of inner sleeve, forms separate space between the inner sleeve 4.3 and outer tube 4.4
4.5, the 4.5 upper end opening lower end closed of separate space, 4.3 lower part of inner sleeve offers a circle exhaust smoke hole 4.6, the housing
Pipe 4.4 offers return air inlet 4.7 in 4.6 corresponding position of exhaust smoke hole, and the return air inlet 4.7 is connected with aspiration channel 9；
4.3 top of inner sleeve is provided with upper beam 4.8, and pull rod 4.9, the drawing are coated on the upper beam 4.8
4.9 upper end of bar is connected by nut 4.10 with upper beam 4.8, and 4.9 lower end of pull rod is fixedly installed lower beam 4.11, institute
It states and is fixedly installed lantern ring 4.12 on the outside of lower beam 4.11, the lantern ring 4.12 is matched with exhaust smoke hole 4.6.
It is connected between 4.4 top of the inner sleeve 4.3 and outer tube by multiple link blocks 4.13；
4.4 top of outer tube is provided with smoke gas detecting pipe 4.14, the smoke gas detecting pipe 4.14 and 4.3 phase of inner sleeve
Connection.
Working principle:
Traditional combustion fan is directly from extraneous air-breathing, and feeding combustor burn and adds after then being preheated by heat exchanger
On the one hand heat, this mode can not utilize fume afterheat, another aspect outside air oxygen content is higher, be sent directly into combustor combustion
Burning be easy to cause NOx to generate.Combustion fan air inlet of the present invention is connected by aspiration channel with chimney component, and chimney component includes
Inner sleeve and outer tube are the flue gas of heat exchanger discharge in inner sleeve, form separate space between internal and external casing, inner sleeve lower part opens up
Have a circle exhaust smoke hole, return air inlet is arranged in smoke evacuation hole location in outer tube, therefore combustion fan can draw part of smoke and
On the one hand a part of outside air can utilize partial fume heat, the gaseous mixture of another aspect flue gas and outside air can
Oxygen content is reduced, combustor can be effectively reduced NOx generation when burning；It is provided with lantern ring in inner sleeve simultaneously, is drawn by adjusting
The upper and lower position of the adjustable lantern ring of bar can need to adjust to realize that lantern ring opens or closes exhaust smoke hole according to combustor
The mixed proportion of flue gas and outside air at return air inlet, significantly more efficient control NOx are generated.
In addition to the implementation, all to use equivalent transformation or equivalent replacement the invention also includes there is an other embodiments
The technical solution that mode is formed should all be fallen within the scope of the hereto appended claims.
Claims (6)
1. a kind of low-nitrogen discharged combustion system of heating furnace, it is characterised in that: it includes combustion chamber (1) and heat exchanger (2), the combustion
It burns in room (1) and is provided with combustor (3), the heat exchanger (2) includes smoke inlet (3.1), smoke outlet (3.2), air inlet (3.3)
With air outlet (3.4), the heat exchanger (2) is provided with chimney component (4) and combustion fan (5) outside, and the smoke inlet (3.1) is logical
Smoke-intake pipe (6) to be crossed to be connected with combustion chamber (1), the smoke outlet (3.2) is connected by smoke exhaust pipe (7) with chimney component (4),
The air inlet (3.3) is connected by blast pipe (8) with the air inlet (5.1) of combustion fan (5), the combustion fan (5)
Exhaust outlet (5.2) be connected with chimney component (4) by aspiration channel (9), the air outlet (3.4) passes through combustion-supporting air hose (10)
It is connected with combustor (2).
2. the low-nitrogen discharged combustion system of a kind of heating furnace according to claim 1, it is characterised in that: the heat exchanger (2)
Immediately below combustion chamber (1).
3. the low-nitrogen discharged combustion system of a kind of heating furnace according to claim 1, it is characterised in that: the chimney component
It (4) include supporting box (4.1), the supporting box (4.1) is transversely coated with chimney smoke-intake pipe (4.2), the support case
It is provided with inner sleeve (4.3) and outer tube (4.4) at the top of body (4.1), described chimney smoke-intake pipe (4.2) one end and smoke exhaust pipe (7)
It is connected, the other end is connected with inner sleeve (4.3) lower end, forms separate space between the inner sleeve (4.3) and outer tube (4.4)
(4.5), separate space (4.5) the upper end opening lower end closed, inner sleeve (4.3) lower part offer a circle exhaust smoke hole (4.6),
The outer tube (4.4) offers return air inlet (4.7) in exhaust smoke hole (4.6) corresponding position, the return air inlet (4.7) and air draught
Pipe (9) is connected.
4. the low-nitrogen discharged combustion system of a kind of heating furnace according to claim 3, it is characterised in that: the inner sleeve
(4.3) top is provided with upper beam (4.8), is coated with pull rod (4.9) on the upper beam (4.8), pull rod (4.9) upper end
It is connected by nut (4.10) with upper beam (4.8), pull rod (4.9) lower end is fixedly installed lower beam (4.11), institute
It states and is fixedly installed lantern ring (4.12) on the outside of lower beam (4.11), the lantern ring (4.12) matches with exhaust smoke hole (4.6).
5. the low-nitrogen discharged combustion system of a kind of heating furnace according to claim 3, it is characterised in that: the inner sleeve
(4.3) it is connected between outer tube (4.4) top by multiple link blocks (4.13).
6. the low-nitrogen discharged combustion system of a kind of heating furnace according to claim 3, it is characterised in that: the outer tube
(4.4) top is provided with smoke gas detecting pipe (4.14), and the smoke gas detecting pipe (4.14) is connected with inner sleeve (4.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910599097.5A CN110307559B (en) | 2019-07-04 | 2019-07-04 | Low nitrogen emission combustion system of heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910599097.5A CN110307559B (en) | 2019-07-04 | 2019-07-04 | Low nitrogen emission combustion system of heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110307559A true CN110307559A (en) | 2019-10-08 |
| CN110307559B CN110307559B (en) | 2024-08-09 |
Family
ID=68078793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910599097.5A Active CN110307559B (en) | 2019-07-04 | 2019-07-04 | Low nitrogen emission combustion system of heating furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN110307559B (en) |
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| CN110307559B (en) | 2024-08-09 |
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