CN203454155U - Air port arranging device preventing high temperature corrosion of water-cooled wall of garbage incinerator - Google Patents
Air port arranging device preventing high temperature corrosion of water-cooled wall of garbage incinerator Download PDFInfo
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- CN203454155U CN203454155U CN201320441423.8U CN201320441423U CN203454155U CN 203454155 U CN203454155 U CN 203454155U CN 201320441423 U CN201320441423 U CN 201320441423U CN 203454155 U CN203454155 U CN 203454155U
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Abstract
The utility model discloses an air port arranging device preventing high temperature corrosion of a water-cooled wall of a garbage incinerator. The device comprises a front arch and a furnace wall, wherein a first line of secondary air ports, a second line of secondary air ports, a third line of secondary air ports and a fourth line of secondary air ports are sequentially formed in the front arch in the direction of the furnace wall, the horizontal spacing between the first line of secondary air ports and the second line of secondary air ports is 0.2-0.4m, the horizontal spacing between the third line of secondary air ports and the fourth line of secondary air ports is equal to the horizontal spacing between the first line of secondary air ports and the second line of secondary air ports, and the horizontal spacing between the third line of secondary air ports and the second line of secondary air ports is 1.4-1.6m; a first layer of burnout air ports, a second layer of burnout air ports and a third layer of burnout air ports are sequentially formed in the furnace wall from bottom to top. The air port arranging device aims to prevent pipe explosion accidents caused by high temperature corrosion of the water-cooled wall of the garbage incinerator and is suitable for building of a novel garbage incinerator and technical transformation of an existing garbage incinerator.
Description
Technical field
The utility model relates to incinerator, relates in particular to a kind of air port arrangement apparatus that prevents incinerator water wall high temperature corrosion.
Background technology
Between nearly decades, global economy fast development, science and technology is rapidly progressive, and people's living standard has obtained larger raising.But the problem of environmental pollution thereupon producing should not be underestimated, produce, domestic refuse output is increasing, also having there is the serious environmental problems of garbage-surrounded city in some city, therefore, the high-efficiency low-pollution of domestic waste is processed and had larger society, economy and environment benefit.Current, more conventional treating method for urban garbage has three kinds: composting process, landfill method and burning method.Compared to first two waste disposal method, waste incineration method has the benefit that subtracts appearanceization, higher innoxious and garbage as resource, is the main method that domestic and international disposal of refuse adopts.
The garbage incineration technology of China has lagged behind decades compared to external, boiler plant, combustion technology are all more backward, for solving energy scarcity and refuse pollution problem, import more external garbage incinerating system, but the operation and management technology of boiler is still continued to use the correlation technique of China, and the rubbish of China is processed without crossing classification substantially, and refuse thermal value amplitude of variation is larger, and the backward technology in this management and refuse classification is extremely unfavorable for the safe and stable operation of incinerator.
In recent years, China goes up high parameter, jumbo waste incineration and generating electricity unit frequently, in stove, operating condition is more severe, as mentioned above, because operational management, refuse thermal value are unstable, add water-cooling wall Materials technology imperfection, can not meet the requirement of incinerator operation explosion stack, so incinerator water-cooling wall pipe explosion accident has generation frequently.
Incinerator water-cooling wall booster, may cause even shutdown of boiler of stove chamber fire-extinguishing, when serious, also can cause boiler explosion accident, causes casualties, and produces a series of bad societies, economy, hazard to person.
Study carefully its concrete reason, in rubbish with the gas with strong corrosion producing with burning and chloride and sulfate at high temperature heating surface metal pipe-wall is caused to serious harm; Stove contains more reducing atmosphere and the interior running temperature of stove is excessively high.With regard to the impact of temperature in atmosphere and stove, can manage to reach the specified service condition in stove by operating condition and air distribution in optimization stove.
Incinerator is established Secondary Air and after-flame wind, air stratification, segmentation are supplied with, can allow the flammable matter in rubbish burn in appointed area is combustion chamber as far as possible, and can not assemble, too much do not fire matter in flue, make flue internal combustion too acutely produce reducing atmosphere and make this place's overtemperature.Under reducing atmosphere, water-cooling wall has corrosion rate faster, adds worst hot case, can more accelerate water-wall corrosion speed, finally causes water-cooling wall booster, so the optimum management of air distribution is seemed to particularly important.
Summary of the invention
The water wall high temperature corrosion problem having been found that for solving water wall high temperature corrosion problem that newly-built incinerator may run into and active service incinerator, the present invention proposes a kind of simple in structure, air port arrangement apparatus that transformation prevents incinerator water wall high temperature corrosion easily.
The utility model is achieved through the following technical solutions:
An air port arrangement apparatus that prevents incinerator water wall high temperature corrosion, comprises face arch and furnace wall, and face arch is disposed with the first row overfiren air port, the second row overfiren air port, the third line overfiren air port, fourth line overfiren air port along furnace wall direction;
Wherein, the level interval of the first row overfiren air port and the second row overfiren air port is 0.2m～0.4m;
The level interval of the third line overfiren air port and fourth line overfiren air port, equates with the level interval of the first row overfiren air port and the second row overfiren air port;
The spacing of the third line overfiren air port and the second row overfiren air port is 1.4m～1.6m;
Furnace wall is disposed with ground floor after-flame air port, second layer after-flame air port, the 3rd grate firing air port to the greatest extent from bottom to top.
The jet nozzle's incidence angle degree of the first row overfiren air port and the second row overfiren air port is 45 °～50 °;
The jet nozzle's incidence angle degree of the third line overfiren air port and fourth line overfiren air port is 55 °～65 °.
Ground floor after-flame air port, second layer after-flame air port and the 3rd grate firing be air port to the greatest extent, and wherein, the difference in height in the two-layer after-flame of arbitrary neighborhood air port is 0.4m～0.7m;
Among the most air port of this three grate firing, one deck after-flame air port, has half after-flame air port to arrange perpendicular to furnace wall arbitrarily, and the after-flame air port of remaining half favours furnace wall and arranges;
To the greatest extent the arbitrary neighborhood in the air port yawing moment between two-layer is contrary for this three grate firing.
The angle of ground floor after-flame air port and furnace wall is 55 °～60 °; The angle of second layer after-flame air port and furnace wall is 49 °～54 ° or 55 °～60 °; The angle of the most air port of the 3rd grate firing and furnace wall is 49 °～54 °.
Few one than the number of the second row overfiren air port of the number of the first row overfiren air port;
Few one than the number of fourth line overfiren air port of the number of the third line overfiren air port;
The number of the third line overfiren air port equates with the number of the first row overfiren air port.
The utility model, with respect to prior art, has following advantage and effect:
Based on above-mentioned air port arrangement apparatus, classification again on the basis of fractional combustion, improve the uniformity of air-supplied amount, utilize after-flame air port to spray the diversity of air, laminates is equipped with and is beneficial to the coverage that expands Secondary Air, improve the temperature homogeneity in combustion chamber, temperature levels is corresponding to be improved.
Multilayer air port is furnished with and is beneficial to the face strength of turbulence that strengthens flue gas, is conducive to the multistage combustion of volatile matter, can improve sufficient combustion degree.
Adjacent lines overfiren air port be staggered in arrangement the flue gas disturbance that contributes to enhanced burning indoor, strengthen mass-and heat-transfer, also improve to a great extent the sufficient degree of combustion chamber internal combustion, can reduce the burning load in flue like this.
After-flame air port adopts multilayer or multirow to arrange, every a line after-flame air port of every one deck is all the vertical furnace wall of half, and half departs from furnace wall certain angle, and the after-flame air port of the adjacent lines opposite direction that need depart from.Employing multirow is arranged, mainly realizes staged air distribution, multi-section-combustion, improves the uniformity of air-supplied distribution.
The after-flame air port deflection angle opposed of adjacent layer, mainly to allow enter flue gas rotation rising, formation center stream, prolong smoke circulation path, improve gas residence time, guarantee the burn-off rate of flue gas with bioxin, furans etc. pollute the decomposition completely of derivative; Adjacent lines after-flame air port deflection angle is contrary, make the flue gas of certain rotation direction under the effect of phase counter deflexion wind direction, counter-rotate rising, this is not only conducive to strengthen the disturbance of flue gas in flue, strengthen heat exchange, the corresponding raising time of staying also, because flue gas is in the situation that having fixedly rotation direction, need to slows down through rotary speed, stop the rotation, reverse rotation speed accelerates and reverse atwirl process.
Accompanying drawing explanation
Fig. 1 is the air port arrangement apparatus structural representation that the utility model prevents incinerator water wall high temperature corrosion.
The specific embodiment
Below in conjunction with specific embodiment, the utility model is more specifically described in detail.
Embodiment
As shown in Figure 1, a kind of air port arrangement apparatus that prevents incinerator water wall high temperature corrosion of the utility model, comprise face arch and furnace wall, face arch is disposed with the first row overfiren air port 1-1, the second row overfiren air port 1-2, the third line overfiren air port 1-3, fourth line overfiren air port 1-4 along furnace wall direction;
Wherein, the level interval of the first row overfiren air port 1-1 and the second row overfiren air port 1-2 is 0.2m～0.4m;
The level interval of the third line overfiren air port 1-3 and fourth line overfiren air port 1-4, equates with the level interval of the first row overfiren air port 1-1 and the second row overfiren air port 1-2;
The spacing of the third line overfiren air port 1-3 and the second row overfiren air port 1-2 is 1.4m～1.6m;
Furnace wall is disposed with ground floor after-flame air port 2-1, second layer after-flame air port 2-2, the 3rd grate firing air port 2-3 to the greatest extent from bottom to top.
The jet nozzle's incidence angle degree of the first row overfiren air port 1-1 and the second row overfiren air port 1-2 is 45 °～50 °;
The jet nozzle's incidence angle degree of the third line overfiren air port 1-3 and fourth line overfiren air port 1-4 is 55 °～65 °.
Ground floor after-flame air port 2-1, second layer after-flame air port 2-2 and the 3rd grate firing be air port 2-3 to the greatest extent, and wherein, the difference in height in the two-layer after-flame of arbitrary neighborhood air port is 0.4m～0.7m;
Among the most air port of this three grate firing, one deck after-flame air port, has half after-flame air port to arrange perpendicular to furnace wall arbitrarily, and the after-flame air port of remaining half favours furnace wall and arranges;
To the greatest extent the arbitrary neighborhood in the air port yawing moment between two-layer is contrary for this three grate firing.
The angle of ground floor after-flame air port 2-1 and furnace wall is 55 °～60 °; The angle of second layer after-flame air port 2-2 and furnace wall is 49 °～54 ° or 55 °～60 °; The angle of the most air port 2-3 of the 3rd grate firing and furnace wall is 49 °～54 °.
Few one than the number of the second row overfiren air port 1-2 of the number of the first row overfiren air port 1-1;
Few one than the number of fourth line overfiren air port 1-4 of the number of the third line overfiren air port 1-3;
The number of the third line overfiren air port 1-3 equates with the number of the first row overfiren air port 1-1.
Based on above-mentioned air port arrangement apparatus, classification again on the basis of fractional combustion, improve the uniformity of air-supplied amount, utilize after-flame air port to spray the diversity of air, laminates is equipped with and is beneficial to the coverage that expands Secondary Air, improve the temperature homogeneity in combustion chamber, temperature levels is corresponding to be improved.
Multilayer air port is furnished with and is beneficial to the face strength of turbulence that strengthens flue gas, is conducive to the multistage combustion of volatile matter, can improve sufficient combustion degree.
Adjacent lines overfiren air port be staggered in arrangement the flue gas disturbance that contributes to enhanced burning indoor, strengthen mass-and heat-transfer, also improve to a great extent the sufficient degree of combustion chamber internal combustion, can reduce the burning load in flue like this.
After-flame air port adopts multilayer or multirow to arrange, every a line after-flame air port of every one deck is all the vertical furnace wall of half, and half departs from furnace wall certain angle, and the after-flame air port of the adjacent lines opposite direction that need depart from.Employing multirow is arranged, mainly realizes staged air distribution, multi-section-combustion, improves the uniformity of air-supplied distribution.
The after-flame air port deflection angle opposed of adjacent layer, mainly to allow enter flue gas rotation rising, formation center stream, prolong smoke circulation path, improve gas residence time, guarantee the burn-off rate of flue gas with bioxin, furans etc. pollute the decomposition completely of derivative; Adjacent layer after-flame air port deflection angle is contrary, make the flue gas of certain rotation direction under the effect of phase counter deflexion wind direction, counter-rotate rising, this is not only conducive to strengthen the disturbance of flue gas in flue, strengthen heat exchange, the corresponding raising time of staying also, because flue gas is in the situation that having fixedly rotation direction, need to slows down through rotary speed, stop the rotation, reverse rotation speed accelerates and reverse atwirl process.
Certainly, the after-flame air port of adjacent layer will keep certain distance, and like this, the main flume that guarantee rises at a high speed completes the process of derotation under the effect of after-flame wind.Flue gas is repeatedly in the process of derotation, because gas gas-phase objects inertia in flue gas is less than the not combustion particle in flue gas, so in the process of derotation, the state that does not fire particle changes the state change speed that speed is less than gas gas-phase objects, thus, do not fire particle and mainly concentrate on flue middle part, outside is wrapped in by gas gas-phase objects, being assigned roughly like this helps the burning-out zone that does not fire particle to concentrate on flue middle part, reduced and do not fired particle for the wear intensity of water-cooling wall on the one hand, avoid on the other hand close to the region of water-cooling wall, acutely burning, prevent the high temperature corrosion of water-cooling wall, the corresponding prolong smoke time of staying, guarantee sufficient combustion, avoid too much not firing particle and enter follow-up flue, reduce wearing and tearing and the high temperature corrosion possibility of follow-up water-cooling wall.
As mentioned above, just can realize preferably the utility model.
Embodiment of the present utility model is not restricted to the described embodiments; other are any does not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitute, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (5)
1. an air port arrangement apparatus that prevents incinerator water wall high temperature corrosion, comprises face arch and furnace wall, it is characterized in that:
Face arch is disposed with the first row overfiren air port, the second row overfiren air port, the third line overfiren air port, fourth line overfiren air port along furnace wall direction;
Wherein, the level interval of the first row overfiren air port and the second row overfiren air port is 0.2m～0.4m;
The level interval of the third line overfiren air port and fourth line overfiren air port, equates with the level interval of the first row overfiren air port and the second row overfiren air port;
The spacing of the third line overfiren air port and the second row overfiren air port is 1.4m～1.6m;
Furnace wall is disposed with ground floor after-flame air port, second layer after-flame air port, the 3rd grate firing air port to the greatest extent from bottom to top.
2. the air port arrangement apparatus that prevents as claimed in claim 1 incinerator water wall high temperature corrosion, is characterized in that: the jet nozzle's incidence angle degree of the first row overfiren air port and the second row overfiren air port is 45 °～50 °;
The jet nozzle's incidence angle degree of the third line overfiren air port and fourth line overfiren air port is 55 °～65 °.
3. prevent as claimed in claim 1 the air port arrangement apparatus of incinerator water wall high temperature corrosion, it is characterized in that: ground floor after-flame air port, second layer after-flame air port and the 3rd grate firing be air port to the greatest extent, wherein, the difference in height in the two-layer after-flame of arbitrary neighborhood air port is 0.4m～0.7m;
Among the most air port of this three grate firing, one deck after-flame air port, has half after-flame air port to arrange perpendicular to furnace wall arbitrarily, and the after-flame air port of remaining half favours furnace wall and arranges;
To the greatest extent the arbitrary neighborhood in the air port yawing moment between two-layer is contrary for this three grate firing.
4. the air port arrangement apparatus that prevents as claimed in claim 1 incinerator water wall high temperature corrosion, is characterized in that: the angle of ground floor after-flame air port and furnace wall is 55 °～60 °; The angle of second layer after-flame air port and furnace wall is 49 °～54 ° or 55 °～60 °; The angle of the most air port of the 3rd grate firing and furnace wall is 49 °～54 °.
5. as described in claim 1 or 2, prevent the air port arrangement apparatus of incinerator water wall high temperature corrosion, it is characterized in that: few one than the number of the second row overfiren air port of the number of the first row overfiren air port;
Few one than the number of fourth line overfiren air port of the number of the third line overfiren air port;
The number of the third line overfiren air port equates with the number of the first row overfiren air port.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320441423.8U CN203454155U (en) | 2013-07-23 | 2013-07-23 | Air port arranging device preventing high temperature corrosion of water-cooled wall of garbage incinerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320441423.8U CN203454155U (en) | 2013-07-23 | 2013-07-23 | Air port arranging device preventing high temperature corrosion of water-cooled wall of garbage incinerator |
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| CN203454155U true CN203454155U (en) | 2014-02-26 |
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| CN201320441423.8U Expired - Fee Related CN203454155U (en) | 2013-07-23 | 2013-07-23 | Air port arranging device preventing high temperature corrosion of water-cooled wall of garbage incinerator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363528A (en) * | 2013-07-23 | 2013-10-23 | 华南理工大学 | Tuyere arrangement device for preventing high temperature corrosion of water-cooled wall of garbage incinerator |
| CN104359112A (en) * | 2014-11-28 | 2015-02-18 | 合肥工业大学 | High-temperature incinerator combustion hood air curtain protection system |
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2013
- 2013-07-23 CN CN201320441423.8U patent/CN203454155U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363528A (en) * | 2013-07-23 | 2013-10-23 | 华南理工大学 | Tuyere arrangement device for preventing high temperature corrosion of water-cooled wall of garbage incinerator |
| CN104359112A (en) * | 2014-11-28 | 2015-02-18 | 合肥工业大学 | High-temperature incinerator combustion hood air curtain protection system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20210723 |