CN204254597U - Low nitre discharge boiler - Google Patents
Low nitre discharge boiler Download PDFInfo
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- CN204254597U CN204254597U CN201420753579.4U CN201420753579U CN204254597U CN 204254597 U CN204254597 U CN 204254597U CN 201420753579 U CN201420753579 U CN 201420753579U CN 204254597 U CN204254597 U CN 204254597U
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- air port
- arch
- secondary air
- overfiren
- burner hearth
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Abstract
The utility model relates to a kind of boiler, refer to a kind of low nitre discharge boiler especially, bag boiler body, feeding system, burner hearth, fire grate, protect arch, deashing device and online soot blower, it is characterized in that described feeding system adopts with fire grate with wide planet batcher, what the both sides of the bottom of described burner hearth were relative is provided with front arch secondary air port and rear arch overfiren air port, described front arch secondary air port and rear arch overfiren air port are all positioned at and protect on arch, and the top of described burner hearth is provided with the high-order overfiren air port of rear wall; Also comprise secondary air channel and the anti-ajutage of flue gas, the high-order overfiren air port of described front arch secondary air port, rear arch overfiren air port and rear wall is all communicated with secondary air channel, described front arch secondary air port, rear arch overfiren air port are communicated with all anti-with the flue gas ajutage of the high-order overfiren air port of rear wall, out of stock dose of spout is also provided with in burner hearth, it is simple that the purpose of this utility model is to provide a kind of structure, reasonable in design, out of stock effective, effectively can reduce the low nitre discharge boiler of smoke dust concentration.
Description
Technical field
The utility model relates to a kind of boiler, refers to a kind of low nitre discharge boiler especially.
Background technology
Solid fuel fired boiler pollutant emission standard before GB 13271-2014 " emission standard of air pollutants for boilers " does not do requirement to the content of NOx in flue gas, and GB 13271-2014 emission standard of air pollutants for boilers has done 400mg/m3 limit value regulation to the content of NOx in solid fuel fired boiler flue gas.The solid fuel fired boiler that design was produced in the past in 2014 does not all take the Mitigation options of NOx.
Utility model content
The purpose of this utility model is to overcome above shortcomings in prior art, and provides a kind of structure simple, reasonable in design, out of stock effective, effectively can reduce the low nitre discharge boiler of smoke dust concentration.
The technical scheme in the invention for solving the above technical problem is: a kind of low nitre discharge boiler, bag boiler body, feeding system, burner hearth, fire grate, protect arch, deashing device and online soot blower, it is characterized in that described feeding system adopts with fire grate with wide planet batcher, what the both sides of the bottom of described burner hearth were relative is provided with front arch secondary air port and rear arch overfiren air port, described front arch secondary air port and rear arch overfiren air port are all positioned at and protect on arch, and the top of described burner hearth is provided with the high-order overfiren air port of rear wall; Also comprise secondary air channel and the anti-ajutage of flue gas, the high-order overfiren air port of described front arch secondary air port, rear arch overfiren air port and rear wall is all communicated with secondary air channel, described front arch secondary air port, rear arch overfiren air port are communicated with all anti-with the flue gas ajutage of the high-order overfiren air port of rear wall, are also provided with out of stock dose of spout in burner hearth.Front arch secondary air port, the high-order overfiren air port fresh air capable of simultaneous injection of rear arch overfiren air port and rear wall and instead send flue gas, effectively organizing fluid field in furnace, strengthening while turbulent closure scheme and effectively reduce fire box temperature, the volatile matter of the precipitation fully low nitre when lower temperature, gas field mesopodium compared with low excess air coefficient generates burning.Fuel out of stock dose of spout is arranged in best out of stock reaction temperature district, sprays into out of stock dose in time, effectively ensures out of stock effect.
As preferably, fire grate adopts scale chain grate, makes flameholding.
The utility model compared with prior art, have the following advantages and effect: front arch secondary air port, the high-order overfiren air port fresh air capable of simultaneous injection of rear arch overfiren air port and rear wall and instead send flue gas, effectively organizing fluid field in furnace, strengthening while turbulent closure scheme and effectively reduce fire box temperature, the volatile matter of the precipitation fully low nitre when lower temperature, gas field mesopodium compared with low excess air coefficient generates burning.Fuel out of stock dose of spout is arranged in best out of stock reaction temperature district, sprays into out of stock dose in time, effectively ensures out of stock effect, and fire grate adopts scale chain grate, makes flameholding.
Accompanying drawing explanation
Fig. 1 is the utility model example structure schematic diagram.
In figure: after 1-front arch secondary air port, 2-burner hearth, 3-out of stock dose of spout, 4-rear arch overfiren air port, 5-, the high-order overfiren air port of wall, 6-secondary air channel, the anti-ajutage of 7-flue gas, 8-boiler body, 9-fire grate, 10-protect arch, 11-planet batcher.
Detailed description of the invention
Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that the utility model is not limited to following examples to explanation of the present utility model.
See Fig. 1, low nitre discharge boiler in the present embodiment, bag boiler body 8, burner hearth 2, fire grate 9, protect arch 10, ash discharging gear and online soot blower, fire grate 9 adopts scale chain grate, planet batcher 11 and scale chain grate are with wide, what front arch secondary air port 1 was relative with rear arch overfiren air port 4 the be arranged in both sides of the bottom of burner hearth 2 protect on arch 10, at the top of burner hearth 2, the high-order overfiren air port 5 of rear wall is provided with above rear arch overfiren air port 4, front arch secondary air port 1, the high-order overfiren air port 5 of rear arch overfiren air port 4 and rear wall all with secondary air channel 6, the anti-ajutage 7 of flue gas is communicated with.Burner hearth 2 is low-temperature burning burner hearth, and the large volume of low-temperature burning chamber design, high fractional cold increase again the time of staying of flue gas in burner hearth 2 while minimizing heating power NOx generates makes its abundant after-flame, guarantees that flue gas blackness is lower than Ringelman 1 grade.
Under the strong winding-up tissue of the air flue gas mist that the high-order overfiren air port 5 of the primary air nozzle of the fuel in the present embodiment burner hearth 2 under fire grate 9, front arch secondary air port 1, rear arch overfiren air port 4 and rear wall provides, the volatile matter that fuel is separated out fully low nitre when lower temperature, gas field mesopodium compared with low excess air coefficient generates burning, out of stock dose of spout 3 is arranged in the out of stock reaction temperature district of the best in burner hearth 2, spray into out of stock dose in time, effectively ensure out of stock effect.
The present embodiment secondary air channel 6 and the anti-ajutage 7 of flue gas are connected to overfire air fan and flue gas recirculation blower fan, provide burning, fall air required for nitre and flue gas.The online soot blower of configuration and deashing device timing are carried out blowing ash, deashing.Effective reduction smoke dust concentration.
In addition, it should be noted that, the equivalence change that all structures according to the utility model inventional idea, feature and principle are done or simple change, be included in the protection domain of the utility model patent.
Claims (2)
1. one kind low nitre discharge boiler, bag boiler body, feeding system, burner hearth, fire grate, protect arch, deashing device and online soot blower, it is characterized in that: described feeding system adopts with fire grate with wide planet batcher, what the both sides of the bottom of described burner hearth were relative is provided with front arch secondary air port and rear arch overfiren air port, described front arch secondary air port and rear arch overfiren air port are all positioned at and protect on arch, and the top of described burner hearth is provided with the high-order overfiren air port of rear wall; Also comprise secondary air channel and the anti-ajutage of flue gas, the high-order overfiren air port of described front arch secondary air port, rear arch overfiren air port and rear wall is all communicated with secondary air channel, described front arch secondary air port, rear arch overfiren air port are communicated with all anti-with the flue gas ajutage of the high-order overfiren air port of rear wall, are also provided with out of stock dose of spout in burner hearth.
2. low nitre discharge boiler according to claim 1, is characterized in that: fire grate adopts scale chain grate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420753579.4U CN204254597U (en) | 2014-12-05 | 2014-12-05 | Low nitre discharge boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420753579.4U CN204254597U (en) | 2014-12-05 | 2014-12-05 | Low nitre discharge boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204254597U true CN204254597U (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420753579.4U Active CN204254597U (en) | 2014-12-05 | 2014-12-05 | Low nitre discharge boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204254597U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864407A (en) * | 2015-05-28 | 2015-08-26 | 苏州斯洛莱自动化设备有限公司 | Low-nitrite and low-emission environment-friendly boiler |
| CN104964303A (en) * | 2015-05-28 | 2015-10-07 | 苏州斯洛莱自动化设备有限公司 | Low emission boiler |
-
2014
- 2014-12-05 CN CN201420753579.4U patent/CN204254597U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104864407A (en) * | 2015-05-28 | 2015-08-26 | 苏州斯洛莱自动化设备有限公司 | Low-nitrite and low-emission environment-friendly boiler |
| CN104964303A (en) * | 2015-05-28 | 2015-10-07 | 苏州斯洛莱自动化设备有限公司 | Low emission boiler |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |