CN220524110U - Eccentric low nitrogen oxide heat accumulation formula combustor of taking flue gas backward flow - Google Patents
Eccentric low nitrogen oxide heat accumulation formula combustor of taking flue gas backward flow Download PDFInfo
- Publication number
- CN220524110U CN220524110U CN202322178678.6U CN202322178678U CN220524110U CN 220524110 U CN220524110 U CN 220524110U CN 202322178678 U CN202322178678 U CN 202322178678U CN 220524110 U CN220524110 U CN 220524110U
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- CN
- China
- Prior art keywords
- fuel gas
- burner
- hot air
- nitrogen oxide
- flue gas
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- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title claims abstract description 58
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 17
- 239000003546 flue gas Substances 0.000 title claims description 17
- 238000009825 accumulation Methods 0.000 title claims description 4
- 239000002737 fuel gas Substances 0.000 claims abstract description 58
- 238000003780 insertion Methods 0.000 claims abstract description 12
- 230000037431 insertion Effects 0.000 claims abstract description 12
- 238000010992 reflux Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 28
- 208000008918 voyeurism Diseases 0.000 claims description 11
- 230000001172 regenerating effect Effects 0.000 claims description 9
- 238000011049 filling Methods 0.000 claims description 8
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000003063 flame retardant Substances 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 abstract description 11
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000002156 mixing Methods 0.000 abstract description 7
- 239000000779 smoke Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 239000011449 brick Substances 0.000 description 9
- 230000009970 fire resistant effect Effects 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Abstract
The utility model discloses an eccentric low nitrogen oxide heat accumulating type burner with smoke reflux. The hot air channel and the fuel gas channel are arranged in parallel and eccentrically, so that fuel gas sprayed from the fuel gas channel and secondary air sprayed from the hot air channel can not be fully mixed near the outlet of the burner to form a violent mixing reaction, and meanwhile, a certain gap exists between fuel gas flow sprayed from the burner and air flow, and the gap is occupied by high-temperature smoke flow sucked in, so that the mixing reaction of the fuel gas flow and the air flow is blocked, and the mixing of the fuel gas flow and the air flow is delayedIn the process, the mixed reaction combustion in the smaller area of the outlet of the burner is extended to the larger space in the furnace, so that the local combustion heat load is reduced, the local high-temperature point of the combustion area is reduced, and the thermal NO is purified X The generation of (2) plays a significant role in inhibiting. The outside of the insertion end of the fuel gas core pipe is provided with a cyclone sheet, and primary air is driven to rotate through the cyclone sheet to enter the fuel gas channel so as to drive fuel gas to fully mix smoke.
Description
Technical Field
The utility model relates to the technical field of regenerative burners, in particular to an eccentric low-nitrogen oxide regenerative burner with smoke backflow.
Background
At present, most of smelting furnaces widely used in the aluminum processing industry adopt regenerative burners. The common regenerative burner has better performance in the aspect of energy conservation, but can not be satisfactory in the aspect of emission of nitrogen oxides, and the concentration of the nitrogen oxides discharged by the flue gas of the regenerative burner of the domestic aluminum smelting furnace is generally 250mg/m 3 Above, it is difficult to meet increasingly stringent environmental emission requirements.
The regenerative burner widely used in the smelting furnace at present mainly adopts two-stage combustion with air fed in sections: primary air is fed through a sleeve concentric with the fuel gas core pipe, and is mixed with fuel gas at the outlet of the fuel gas core pipe to form primary combustion; after the secondary air exchanges heat through the heat storage box, the secondary air is sprayed out through the air outlets of the tiles uniformly distributed around the fuel gas core pipe and is mixed with fuel gas sprayed out from the center of the tiles to form secondary combustion. However, because the contact area between the secondary air sprayed out from the uniformly distributed secondary air nozzles and the fuel gas sprayed out from the fuel gas core pipe is large, the secondary air and the fuel gas form a violent mixing reaction in a very short area near the outlet of the burner, the combustion area is small, the maximum temperature is increased, and thus NO can not be effectively controlled X And (5) discharging.
Disclosure of Invention
In order to solve the technical problems, the utility model designs an eccentric low-nitrogen oxide heat accumulating type burner with smoke backflow.
The utility model adopts the following technical scheme:
the utility model provides an eccentric formula combustor of low nitrogen oxide heat accumulation formula of taking flue gas backward flow, includes nozzle and hot-blast pipe that advances, and the nozzle includes the flame retardant coating of pouring in nozzle outer tube and the nozzle outer tube, and the flame retardant coating has been pour to corresponding nozzle outer tube in the hot-blast pipe that advances, hot-blast passageway, gas passageway, ignition passageway have been seted up on the flame retardant coating of pouring in the nozzle outer tube, hot-blast passageway and gas passageway parallel eccentric arrangement, the ignition passageway slope is directional gas passageway center setting, the ignition passageway outside is provided with the burning torch, hot-blast passageway intercommunication hot-blast inlet of advancing the pipe, peg graft in the gas passageway has a wind sleeve pipe, peg graft in the wind sleeve pipe has a gas core pipe.
Preferably, a swirl plate is arranged outside the insertion end of the fuel gas core tube. The swirl piece drives the primary air to rotate to enter the fuel gas channel.
Preferably, the outer side of the insertion section of the fuel gas core tube is uniformly provided with a supporting plate along the circumference. The arrangement of the supporting plate prevents the fuel gas core pipe from being attached to the primary air sleeve pipe to block the primary air inlet.
Preferably, the primary air sleeve and the fuel gas core pipe are respectively provided with a connecting flange, the primary air sleeve is connected to the burner outer pipe or the hot air inlet pipe through the connecting flanges, and the fuel gas core pipe is connected to the primary air sleeve through the connecting flanges. The primary air sleeve and the fuel gas core tube are convenient to assemble and disassemble through the connecting flange.
Preferably, the burner outer tube and the hot air inlet tube are provided with connecting flanges, and the burner outer tube and the hot air inlet tube are fixedly connected through the connecting flanges. The disassembly and assembly of the burner outer tube and the hot air inlet tube are convenient through the connecting flange.
Preferably, a fire detector is arranged on the outer side of the burner, and the fire detector is obliquely arranged in the center of the gas channel.
Preferably, the hot air inlet pipe is externally provided with a peeping hole, and the peeping hole is arranged opposite to the hot air channel.
Preferably, a filling type fire-resistant layer is detachably arranged in the gas channel, and the filling type fire-resistant layer covers the gas channel. The filling type fire-resistant layer can be detached and installed, so that the filling type fire-resistant layer is convenient to replace at any time, and the whole burner does not need to be replaced.
Preferably, the refractory layer is a tile.
Preferably, the hot air inlet is disposed obliquely to the hot air passage.
The beneficial effects of the utility model are as follows: (1) The hot air channel and the gas channel are arranged in parallel and eccentrically, so that the gas sprayed from the gas channel and the secondary air sprayed from the hot air channel can not be fully mixed near the outlet of the burner to form a violent mixing reaction, and meanwhile, a certain gap exists between the gas flow sprayed from the burner and the air flow, and the gap is occupied by the high-temperature smoke flow sucked in, so that the gas is further blockedThe mixing reaction of the flow and the air flow delays the mixing process of the gas flow and the air flow, so that the mixed reaction combustion in a smaller area of the outlet of the burner extends to the mixed reaction combustion in a larger space in the furnace, the local combustion heat load is reduced, the local high temperature point of the combustion area is reduced, and the thermal NO is purified X The generation of the (C) has obvious inhibition effect; (2) The outside of the insertion end of the fuel gas core pipe is provided with a cyclone sheet, and primary air is driven to rotate through the cyclone sheet to enter the fuel gas channel so as to drive fuel gas to fully mix smoke.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present utility model;
FIG. 2 is a schematic view of another embodiment 1;
FIG. 3 is a front view of embodiment 1 of the present utility model;
FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;
FIG. 5 is a cross-sectional view taken in the direction B-B in FIG. 3;
FIG. 6 is a schematic view of a primary air duct according to the present utility model;
FIG. 7 is a schematic view of the structure of embodiment 2 of the present utility model;
FIG. 8 is a schematic view of another embodiment 2;
fig. 9 is a front view of embodiment 2 of the present utility model;
FIG. 10 is a cross-sectional view taken along the direction C-C in FIG. 9;
FIG. 11 is a schematic view showing a structure of embodiment 3 of the present utility model;
FIG. 12 is a schematic view showing another angle of embodiment 3 of the present utility model;
FIG. 13 is a front view of embodiment 3 of the present utility model;
FIG. 14 is a cross-sectional view taken in the direction D-D of FIG. 13;
in the figure: 1. fire detection, 2, peeping holes, 3, a hot air channel, 4, a gas channel, 5, an ignition channel, 6, an ignition gun, 7, a burner outer tube, 8, a hot air inlet tube, 9, tiles, 10, a hot air inlet, 11, a primary air sleeve, 12, a gas core tube, 13, a supporting plate, 14, a swirl plate, 15 and a filling type refractory layer.
Detailed Description
The technical scheme of the utility model is further specifically described by the following specific embodiments with reference to the accompanying drawings:
example 1: as shown in fig. 1-5, the eccentric low nitrogen oxide heat accumulating burner with flue gas reflux comprises a burner and a hot air inlet pipe 8, wherein the burner comprises a burner outer pipe 7 and a brick 9 poured in the burner outer pipe, the brick is poured in the hot air inlet pipe corresponding to the burner outer pipe, a hot air channel 3, an ignition channel 5 and two fuel gas channels 4 are arranged on the brick in the burner outer pipe in a parallel and eccentric manner, the ignition channel is obliquely arranged towards the center of the two fuel gas channels, an ignition gun 6 is arranged on the outer side of the ignition channel, the hot air channel is communicated with a hot air inlet 10 of the hot air inlet pipe, primary air sleeves 11 are respectively inserted in the two fuel gas channels, and a fuel gas core pipe 12 is inserted in the primary air sleeves.
As shown in fig. 6, a swirl plate 14 is provided outside the insertion end of the gas core tube. The outside of the insertion section of the fuel gas core tube is uniformly provided with a supporting plate 13 along the circumference.
The primary air sleeve and the fuel gas core pipe are respectively provided with a connecting flange, the primary air sleeve is connected to the burner outer pipe through the connecting flange, and the fuel gas core pipe is connected to the primary air sleeve through the connecting flange. The burner outer tube and the hot air inlet tube are provided with connecting flanges, and are fixedly connected through the connecting flanges.
The outside of the burner is provided with a fire detector 1, and the fire detector is obliquely arranged in the center of the gas channel. The outer part of the hot air inlet pipe is provided with a peeping hole 2, and the peeping hole is opposite to the hot air channel. The hot air inlet is inclined to the hot air channel.
Example 2: as shown in figures 7-10, the eccentric low nitrogen oxide heat accumulating burner with flue gas reflux comprises a burner and a hot air inlet pipe, wherein the burner comprises a burner outer pipe and a brick poured in the burner outer pipe, the brick is poured in the hot air inlet pipe corresponding to the burner outer pipe, a hot air channel, an ignition channel and a fuel gas channel are arranged on the brick in the burner outer pipe in a parallel and eccentric manner, the ignition channel is obliquely oriented to the center of the fuel gas channel, an ignition gun is arranged on the outer side of the ignition channel, the hot air channel is communicated with a hot air inlet of the hot air inlet pipe, a primary air sleeve is inserted in the fuel gas channel, and a fuel gas core pipe is inserted in the primary air sleeve.
As shown in fig. 6, a swirl plate is provided outside the insertion end of the gas core tube. The outside of the insertion section of the fuel gas core pipe is uniformly provided with a supporting plate along the circumference.
The primary air sleeve and the fuel gas core pipe are respectively provided with a connecting flange, the primary air sleeve is connected to the burner outer pipe through the connecting flange, and the fuel gas core pipe is connected to the primary air sleeve through the connecting flange. The burner outer tube and the hot air inlet tube are provided with connecting flanges, and are fixedly connected through the connecting flanges.
The outer side of the burner is provided with a fire detector, and the fire detector is obliquely arranged in the center of the gas channel. The hot air inlet pipe is externally provided with a peeping hole, and the peeping hole is arranged opposite to the hot air channel. The hot air inlet is inclined to the hot air channel.
Example 3: as shown in fig. 11-14, the eccentric low nitrogen oxide heat accumulating type burner with flue gas reflux comprises a burner and a hot air inlet pipe, wherein the burner comprises a burner outer pipe and a brick poured in the burner outer pipe, the brick corresponding to the burner outer pipe is poured in the hot air inlet pipe, a hot air channel, an ignition channel and a fuel gas channel are arranged on the brick in the burner outer pipe in a parallel eccentric manner, the ignition channel is obliquely oriented to the center of the fuel gas channel, an ignition gun is arranged on the outer side of the ignition channel, the hot air channel is communicated with a hot air inlet of the hot air inlet pipe, the fuel gas channel is communicated with the fuel gas channel in the hot air inlet pipe, a primary air sleeve is inserted in the fuel gas channel in an inserted manner, a fuel gas core pipe is detachably arranged in the fuel gas channel, and the fuel gas channel is coated with a filling type fire-resistant layer 15.
As shown in fig. 6, a swirl plate is provided outside the insertion end of the gas core tube. The outside of the insertion section of the fuel gas core pipe is uniformly provided with a supporting plate along the circumference.
The primary air sleeve and the fuel gas core pipe are respectively provided with a connecting flange, the primary air sleeve is connected to the hot air inlet pipe through the connecting flange, and the fuel gas core pipe is connected to the primary air sleeve through the connecting flange. The burner outer tube and the hot air inlet tube are provided with connecting flanges, and are fixedly connected through the connecting flanges.
The outer side of the burner is provided with a fire detector, and the fire detector is obliquely arranged in the center of the gas channel. The hot air inlet pipe is externally provided with a peeping hole, and the peeping hole is arranged opposite to the hot air channel. The hot air inlet is inclined to the hot air channel.
The above-described embodiment is only a preferred embodiment of the present utility model, and is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.
Claims (10)
1. The utility model provides an eccentric formula combustor of low nitrogen oxide heat accumulation formula of taking flue gas backward flow, includes nozzle and hot-blast inlet tube, and the nozzle includes the flame retardant coating of pouring in nozzle outer tube and the nozzle outer tube, and the flame retardant coating has been pour to corresponding nozzle outer tube in the hot-blast inlet tube, characterized by, hot-blast passageway, gas passageway, ignition passageway have been seted up on the flame retardant coating of pouring in the nozzle outer tube, hot-blast passageway and gas passageway parallel eccentric arrangement, the ignition passageway slope is directional gas passageway center setting, is provided with the burning torch in the ignition passageway outside, hot-blast passageway intercommunication hot-blast inlet tube's hot-blast entry, peg graft in the gas passageway has a wind sleeve pipe, peg graft in the wind sleeve pipe has the gas core pipe.
2. The eccentric low nitrogen oxide heat accumulating type burner with flue gas reflux according to claim 1, wherein a swirl plate is arranged outside the insertion end of the fuel gas core tube.
3. The eccentric low nitrogen oxide regenerative burner with flue gas reflux according to claim 1, wherein the support plates are uniformly arranged on the outer side of the insertion section of the fuel gas core tube along the circumference.
4. The eccentric low nitrogen oxide heat accumulating type burner with flue gas reflux according to claim 1, wherein the primary air sleeve and the fuel gas core tube are respectively provided with a connecting flange, the primary air sleeve is connected to the burner outer tube or the hot air inlet tube through the connecting flange, and the fuel gas core tube is connected to the primary air sleeve through the connecting flange.
5. The eccentric low nitrogen oxide heat accumulating type burner with flue gas reflux according to claim 1, wherein the burner outer tube and the hot air inlet tube are provided with connecting flanges, and the burner outer tube and the hot air inlet tube are fixedly connected through the connecting flanges.
6. The eccentric low nitrogen oxide heat accumulating type burner with flue gas reflux according to claim 1, wherein a fire detector is arranged on the outer side of the burner, and the fire detector is obliquely arranged in the center of the gas channel.
7. The eccentric low nitrogen oxide heat accumulating type burner with flue gas reflux according to claim 1, wherein the hot air inlet pipe is externally provided with a peeping hole, and the peeping hole is arranged opposite to the hot air channel.
8. The eccentric low nitrogen oxide heat accumulating type burner with flue gas reflux according to claim 1, wherein a filling type refractory layer is detachably arranged in the fuel gas channel, and the filling type refractory layer covers the fuel gas channel.
9. The eccentric low nitrogen oxide regenerative burner with flue gas recirculation as in claim 1, wherein said refractory layer is comprised of tiles.
10. An eccentric low nox regenerative burner with flue gas recirculation as recited in claim 1 wherein said hot air inlet is disposed oblique to the hot air path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322178678.6U CN220524110U (en) | 2023-08-14 | 2023-08-14 | Eccentric low nitrogen oxide heat accumulation formula combustor of taking flue gas backward flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322178678.6U CN220524110U (en) | 2023-08-14 | 2023-08-14 | Eccentric low nitrogen oxide heat accumulation formula combustor of taking flue gas backward flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220524110U true CN220524110U (en) | 2024-02-23 |
Family
ID=89935356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322178678.6U Active CN220524110U (en) | 2023-08-14 | 2023-08-14 | Eccentric low nitrogen oxide heat accumulation formula combustor of taking flue gas backward flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220524110U (en) |
-
2023
- 2023-08-14 CN CN202322178678.6U patent/CN220524110U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |