CN205664387U - Hot flue gas of extraction after -flame section head space lets in waste incinerator of dry section - Google Patents
Hot flue gas of extraction after -flame section head space lets in waste incinerator of dry section Download PDFInfo
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- CN205664387U CN205664387U CN201620530846.0U CN201620530846U CN205664387U CN 205664387 U CN205664387 U CN 205664387U CN 201620530846 U CN201620530846 U CN 201620530846U CN 205664387 U CN205664387 U CN 205664387U
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Abstract
The utility model relates to a hot flue gas of extraction after -flame section head space lets in waste incinerator of dry section, wherein: dry section air chamber connects a tuber pipe to be equipped with the after -flame section flue gas entry of connecting after -flame section flue gas recirculation pipeline, pipeline end -to -end connection after -flame section flue gas extraction opening, be connected with electronic air door and fan on the after -flame section flue gas recirculation pipeline, after -flame section flue gas extraction opening is located and burns burning furnace after -flame section top, during the waste incinerator operation, opening electronic air door, opening the fan, the flue gas that burns burning furnace after -flame section gets into after -flame section flue gas recirculation pipeline, mixes with wind of part at dry section air chamber, gets into and burns the dry section of burning furnace. The utility model discloses an extraction after -flame section flue gas and a wind mix, let in the dry section of rubbish with the mist for dry section does not need a wind to preheat, and the dry section of reduction reduces the after -flame section and improves the rubbish burn -off rate to burning zone oxygen suppliment volume, improvement burning zone flame to the radiation intensity of after -flame section the oxygen suppliment volume of burning zone.
Description
Technical field
This utility model relates to garbage incineration technology, is passed through dryer section particularly to one extraction after-flame section head space heat smoke
Incinerator.
Background technology
The main type of furnace being applied to consumer waste incineration at present is grate furnace and fluid bed, and wherein rubbish is burnt by grate furnace
Burn and be made without sorting, broken in advance, year parallel-adder settle-out time long, and flying dust yields poorly it is considered to be more suitable for after burning
The burning equipment of domestic garbage property.By 2014, the burning facility of grate furnace is used to reach domestic existing facility
73.5%, use the ratio of grate furnace higher building and plan to build in facility.
House refuse is to launch whole combustion process on fire grate length direction: (1) is at the preheating of dry igniting section, moisture
Evaporation and the endothermic process of catching fire that heats up.(2) at the exothermic process based on volatile combustion of burning zone.(3) in after-flame section
The exothermic process burnt completely based on fixed carbon.In dry ignition process, first rubbish be pushed in incinerator, absorbs
Preheat under furnace high-temperature flue gas in an organized way radiant heat, and the primary air effect sent under fire grate, it is achieved refuse moisture is fast
The process of speed evaporation.One time pathogenic wind-warm is generally 200 DEG C, uses steam heating, wastes the high-quality energy.
At low NOxBurning aspect, is used mostly the burning of burning zone control oxygen.Numerical simulation shows, although burning zone temperature is relatively
Height, but oxygen content is low, so generating NOxMeasure less；And between burning zone and dryer section, between burning zone and after-flame section,
Owing to dryer section and after-flame section oxygen supply are abundant, temperature is higher, easily generates NOx。
In view of this, person skilled in art makes great efforts to research and develop a kind of Preheated steam usage amount that reduces, minimizing dryer section pair
The oxygen-supplying amount of burning zone, reduces after-flame section to burning zone oxygen-supplying amount, the raising burning zone flame radiant intensity to after-flame section, raising
The incinerator of rubbish burn-off rate.
Summary of the invention
Task of the present utility model is to provide a kind of after-flame section head space heat smoke that extracts and is passed through the incinerator of dryer section,
Mixed with First air by extraction after-flame section flue gas, mixed gas is passed into drying garbage section so that dryer section need not one
Secondary wind preheats, and reduces the dryer section oxygen-supplying amount to burning zone, reduces after-flame section to burning zone oxygen-supplying amount, raising burning zone flame pair
The radiant intensity of after-flame section, improves rubbish burn-off rate, solves the problem existing for above-mentioned prior art.
Technical solution of the present utility model is as follows:
A kind of after-flame section head space heat smoke that extracts is passed through the incinerator of dryer section, and it includes incinerator burning zone, burns
Burning stove after-flame section, incinerator dryer section, it also includes that incinerator dryer section wind cabin, primary air piping, incinerator after-flame section flue gas enter
Mouth, after-flame section flue gas recirculation pipeline, MOD, blower fan and after-flame section flue gas bleeding point；
Described dryer section wind cabin connects primary air piping, and dryer section wind cabin is provided with after-flame section smoke inlet, and after-flame section flue gas enters
Mouth connects after-flame section flue gas recirculation pipeline, and after-flame section flue gas recirculation pipe end connects after-flame section flue gas bleeding point；
Connect on described after-flame section flue gas recirculation pipeline and have MOD and blower fan；
Described after-flame section flue gas bleeding point is positioned at above incinerator after-flame section；
When described incinerator runs, opening MOD, open blower fan, the flue gas of incinerator after-flame section enters after-flame
Section flue gas recirculation pipeline, mixes with part First air in dryer section wind cabin, enters incinerator dryer section.
Burner hearth throat above described burning zone is provided with secondary air channel, supplements secondary wind so that rubbish fugitive constituent after-flame.
Described after-flame section flue gas recirculation pipeline connects on the pipeline before arriving MOD position venturi flow
Meter.
Described after-flame section flue gas recirculation pipeline connects on the pipeline before arriving MOD position temperature sensor.
Lime-ash outlet it is provided with bottom described dryer section wind cabin.
The 5%-25% that exhaust gas volumn is primary air flow of described after-flame section flue gas bleeding point extraction.
Described dryer section wind cabin extraction primary air flow is the 0%-30% of total primary air flow.
This utility model mixes (room temperature), by mixed gas (200 by extraction after-flame section flue gas (400 DEG C) with First air
DEG C) it being passed into drying garbage section so that dryer section need not First air preheating, reduces Preheated steam usage amount；Simultaneously because make
With after-flame section flue gas drying rubbish, reduce the dryer section oxygen-supplying amount to burning zone, reduce this region NOxGenerate；Extraction after-flame section
Flue gas, minimizing after-flame section, to burning zone oxygen-supplying amount, reduces this region NOxGrowing amount；Extraction after-flame section flue gas simultaneously so that burning
Duan Huoyan tilts to after-flame section, improves the burning zone radiant intensity to after-flame section, improves rubbish burn-off rate.For ensureing fugitive constituent
After-flame, supplements secondary wind in burner hearth throat simultaneously.
A kind of advantage extracting the incinerator that after-flame section head space heat smoke is passed through dryer section of the present utility model is:
1, simple in construction, dryer section has only to part First air, reduces overall First air excess coefficient.
2, after-flame section arranges bleeding point, thus it is possible to vary burner hearth flow field, makes flame of centre spread to after-flame section, strengthens flame
Rubbish burn-off rate, to after-flame section radianting capacity, is improved in center.
3, reduce from after-flame section and the oxygen-supplying amount of dryer section, coordinate burning zone anoxycausis and the first flue secondary wind,
Can effectively reduce NOxGenerate.
Accompanying drawing explanation
Fig. 1 is of the present utility model a kind of to extract the structure that after-flame section head space heat smoke is passed through the incinerator of dryer section
Schematic diagram.
Reference:
1 is primary air piping, and 2 is incinerator dryer section wind cabin, and 3 is incinerator after-flame section smoke inlet, and 4 burn for incinerator
Section, 5 is incinerator after-flame section, and 6 is after-flame section flue gas recirculation pipeline, and 7 is Venturi meter, and 8 is temperature sensor, and 9 is electricity
Wind symptom door, 10 is blower fan, and 11 is after-flame section flue gas bleeding point, and 12 is secondary air channel, and 13 is incinerator dryer section.
Detailed description of the invention
With embodiment, this utility model is elaborated below in conjunction with the accompanying drawings.
Referring to Fig. 1, this utility model provides a kind of after-flame section head space heat smoke that extracts to be passed through the incinerator of dryer section,
This incinerator is mainly by incinerator burning zone 4, incinerator after-flame section 5, incinerator dryer section 13, incinerator dryer section wind cabin
2, primary air piping 1, incinerator after-flame section smoke inlet 3, after-flame section flue gas recirculation pipeline 6, MOD 9, blower fan 10 and combustion
Section flue gas bleeding point 11 to the greatest extent forms.
Dryer section wind cabin 2 connects primary air piping 1.Dryer section wind cabin 2 is provided with after-flame section smoke inlet 3, and after-flame section flue gas enters
Mouth 3 connects after-flame section flue gas recirculation pipelines 6, and after-flame section flue gas recirculation pipeline 6 end connects after-flame section flue gas bleeding point 11.
Connect on after-flame section flue gas recirculation pipeline 6 and have MOD 9 and blower fan 10.After-flame section flue gas recirculation pipeline 6 arrives
Reach and on the pipeline before MOD 9 position, connect Venturi meter 7 and temperature sensor 8, in order to detect and control air quantity
And temperature.
After-flame section flue gas bleeding point 11 is positioned at above incinerator after-flame section 5.After-flame section flue gas recirculation pipeline 6 one end connects combustion
Section flue gas bleeding point 11 to the greatest extent, the other end connects dryer section wind cabin 2.The exhaust gas volumn of after-flame section flue gas bleeding point 11 extraction is First air
The 5%-25% of amount.After-flame section arranges bleeding point, thus it is possible to vary burner hearth flow field, makes flame of centre spread to after-flame section, strengthens fire
Rubbish burn-off rate, to after-flame section radianting capacity, is improved in flame center.
Lime-ash outlet it is provided with bottom dryer section wind cabin 2.Dryer section wind cabin 2 extracts the 0%-that primary air flow is total primary air flow
30%.Dryer section has only to part First air, it is possible to decrease overall First air excess coefficient.
Burner hearth throat above burning zone 4 is provided with secondary air channel 12, supplements secondary wind so that rubbish fugitive constituent after-flame.This knot
Structure can reduce the oxygen-supplying amount from after-flame section and dryer section, coordinates burning zone anoxycausis and the first flue secondary wind, permissible
Effectively reduce NOxGenerate.
In sum, a kind of after-flame section head space heat smoke that extracts of the present utility model is used to be passed through the waste incineration of dryer section
Stove, is mixed with First air by extraction after-flame section flue gas, mixed gas is passed into drying garbage section so that dryer section need not
First air preheats, and reduces Preheated steam usage amount；Simultaneously because use after-flame section flue gas drying rubbish, reduce dryer section to burning
The oxygen-supplying amount of section, reduces this region NOxGenerate；Extraction after-flame section flue gas, minimizing after-flame section, to burning zone oxygen-supplying amount, reduces this district
Territory NOxGrowing amount；Extraction after-flame section flue gas simultaneously so that burning zone flame tilts to after-flame section, improves burning zone flame to combustion
The radiant intensity of section to the greatest extent, improves rubbish burn-off rate.For ensureing the after-flame of fugitive constituent, supplement secondary wind in burner hearth throat simultaneously.
Certainly, those skilled in the art in the art are it should be appreciated that above-described embodiment is intended merely to this reality is described
With novel, and it is not used as restriction of the present utility model, as long as in spirit of the present utility model, to above-mentioned reality
Execute the change of example, modification etc. all will fall in the range of this utility model claim.
Claims (7)
1. extracting after-flame section head space heat smoke and be passed through an incinerator for dryer section, it includes incinerator burning zone (4), burns
Burn stove after-flame section (5), incinerator dryer section (13), it is characterised in that: it also includes incinerator dryer section wind cabin (2), First air
Pipe (1), incinerator after-flame section smoke inlet (3), after-flame section flue gas recirculation pipeline (6), MOD (9), blower fan (10) and
After-flame section flue gas bleeding point (11)；
Described dryer section wind cabin (2) connects primary air piping (1), and dryer section wind cabin (2) is provided with after-flame section smoke inlet (3), after-flame
Section smoke inlet (3) connects after-flame section flue gas recirculation pipeline (6), and after-flame section flue gas recirculation pipeline (6) end connects after-flame section cigarette
Gas bleeding point (11)；
The upper connection of described after-flame section flue gas recirculation pipeline (6) has MOD (9) and blower fan (10)；
Described after-flame section flue gas bleeding point (11) is positioned at incinerator after-flame section (5) top；
When described incinerator runs, opening MOD (9), open blower fan (10), the flue gas of incinerator after-flame section enters
After-flame section flue gas recirculation pipeline (6), mixes with part First air in dryer section wind cabin (2), enters incinerator dryer section (13).
Extraction after-flame section head space heat smoke the most according to claim 1 is passed through the incinerator of dryer section, and its feature exists
Burner hearth throat in: described burning zone (4) top is provided with secondary air channel (12), supplements secondary wind so that rubbish fugitive constituent after-flame.
Extraction after-flame section head space heat smoke the most according to claim 1 is passed through the incinerator of dryer section, and its feature exists
In: described after-flame section flue gas recirculation pipeline (6) connects on the pipeline before arriving MOD (9) position venturi flow
Meter (7).
Extraction after-flame section head space heat smoke the most according to claim 1 is passed through the incinerator of dryer section, and its feature exists
In: described after-flame section flue gas recirculation pipeline (6) connects on the pipeline before arriving MOD (9) position temperature sensor
(8).
Extraction after-flame section head space heat smoke the most according to claim 1 is passed through the incinerator of dryer section, and its feature exists
In: described dryer section wind cabin (2) bottom is provided with lime-ash outlet.
Extraction after-flame section head space heat smoke the most according to claim 1 is passed through the incinerator of dryer section, and its feature exists
In: the 5%-25% that exhaust gas volumn is primary air flow that described after-flame section flue gas bleeding point (11) is extracted.
Extraction after-flame section head space heat smoke the most according to claim 1 is passed through the incinerator of dryer section, and its feature exists
In: described dryer section wind cabin (2) extraction primary air flow is the 0%-30% of total primary air flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620530846.0U CN205664387U (en) | 2016-06-04 | 2016-06-04 | Hot flue gas of extraction after -flame section head space lets in waste incinerator of dry section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620530846.0U CN205664387U (en) | 2016-06-04 | 2016-06-04 | Hot flue gas of extraction after -flame section head space lets in waste incinerator of dry section |
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| CN205664387U true CN205664387U (en) | 2016-10-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841164A (en) * | 2016-06-04 | 2016-08-10 | 上海市环境工程设计科学研究院有限公司 | Garbage incinerator for extracting headspace hot flue gases at burned-out zone and introducing into drying zone |
| CN109268814A (en) * | 2018-09-29 | 2019-01-25 | 鞍山美城城市环境服务有限公司 | A kind of coal furnace reduces the combustion method of discharged nitrous oxides |
-
2016
- 2016-06-04 CN CN201620530846.0U patent/CN205664387U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841164A (en) * | 2016-06-04 | 2016-08-10 | 上海市环境工程设计科学研究院有限公司 | Garbage incinerator for extracting headspace hot flue gases at burned-out zone and introducing into drying zone |
| CN109268814A (en) * | 2018-09-29 | 2019-01-25 | 鞍山美城城市环境服务有限公司 | A kind of coal furnace reduces the combustion method of discharged nitrous oxides |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |