CN106838922A - Incinerator is without rear arch following current equipment - Google Patents
Incinerator is without rear arch following current equipment Download PDFInfo
- Publication number
- CN106838922A CN106838922A CN201710221797.1A CN201710221797A CN106838922A CN 106838922 A CN106838922 A CN 106838922A CN 201710221797 A CN201710221797 A CN 201710221797A CN 106838922 A CN106838922 A CN 106838922A
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- China
- Prior art keywords
- air jet
- overfire air
- layer
- following current
- current equipment
- 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.)
- Pending
Links
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 12
- 230000005611 electricity Effects 0.000 abstract description 6
- 238000002485 combustion reaction Methods 0.000 description 10
- 238000013461 design Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004056 waste incineration Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010782 bulky waste Substances 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- 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
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
- F23L9/02—Passages or apertures for delivering secondary air for completing combustion of fuel by discharging the air above the fire
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Incineration Of Waste (AREA)
Abstract
The present invention relates to incinerator without rear arch following current equipment, category enviromental protection enterprise is special, it has disclosed flue (9), there is burner hearth (7) in flue (9) lower section, the side of burner hearth (7) is rear wall (8), there are face arch (5) and face arch lower header (6) in burner hearth (7), the water-cooling wall fin on face arch (9) top is provided with least one upper strata overfire air jet (3) and aditus laryngis upper strata overfire air jet and at least one lower floor's overfire air jet (4) and aditus laryngis lower floor overfire air jet 11, each layer overfire air jet that the air inlet of each layer overfire air jet is respectively communicated with described in secondary air channel (1) is provided with secondary air register (2) with secondary air channel (1) junction.The present invention reaches the Chinese low heat value for the treatment of, high-moisture, ash content rubbish high and the purpose for generating electricity.
Description
Technical field
The present invention relates to a kind of combustion refuse and using the cremation facilities of cogeneration, especially bulky refuse burning is come
Say can optimize burning and simplify chamber structure without rear arch following current equipment.
Background technology
As national economy and the development of urban construction, refuse production are more and more, land resource is more and more nervous.Root
Predicted according to national environmental protection portion, quantity of refuse was up to 1.79,2.1 hundred million tons 2015 and the year two thousand twenty so that waste incineration and generating electricity skill
Art turns into the new trend and new focus that many cities solve Way-out of Garbage.Waste incineration method can make rubbish volume reduction 90%, decrement
70%-80%, is greatly reduced shared land area, meets the requirement of minimizing；Waste incineration waste heat can also heat supply, hair
Electricity, is capable of achieving the purpose of resource.
Rubbish from cooking is more in rubbish produced by the even coastal flourishing city in China regions, and calorific value is low, moisture is high, ash
Divide big, complicated component.According to national garbage burning factory survey data analysis, domestic incinerator has more than 2/3 combustion in recent years
Burn abnormal.In addition in terms of chamber design, Chinese low heat value, high-moisture, high-ash rubbish feature are recognized due to lacking
Know, the volume heat load and grate heat release rate design aspect of burner hearth are lacked experience, the radiation to the face arch and rear arch of burner hearth
Consider not enough with convection heat transfer' heat-transfer by convection so that burner hearth flame degree of filling is poor, and bulk temperature is not high in burner hearth, wet for low heat value
Rubbish is especially apparent, it has to plus more coal or oily auxiliary combustion.
The content of the invention
It is an object of the invention to provide a kind of incinerator without rear arch following current equipment, the Chinese low-heat for the treatment of is thus reached
Value, high-moisture, ash content rubbish high and the purpose for generating electricity, or existing chamber structure simplify to reach burns in optimization burner hearth
Burn the Chinese rubbish for the treatment of and the purpose for generating electricity.
The technology of the present invention solution is to include the first flue 9, and it is particularly in also including burner hearth 7, the burner hearth (7)
Including face arch (5), face arch lower header (6), rear wall (8), the water-cooling wall fin on face arch (5) top of the burner hearth is provided with least one
Individual upper strata overfire air jet (3) and at least one lower floor's overfire air jet (4), the air inlet of each layer overfire air jet respectively connect
Secondary air channel (1) is connected with, described each layer overfire air jet is provided with secondary air register (2) with secondary air channel (1) junction.
Horizontal cross-section where described upper strata overfire air jet (3) and face arch lower header (6) vertical range be 1.6m~
Horizontal cross-section where 1.8m, lower floor's overfire air jet (4) is 1.0m~1.3m with face arch lower header (6) vertical range.
The two-layer overfire air jet up and down of the face arch, every layer has 6 nozzles, is respectively separated is arranged on face arch successively,
Two-layer has 12 overfire air jets.
The angle of inclination beta of described face arch (5) be 10~20 °, upper strata overfire air jet (3) enter to spray angle [alpha] 1 for 50 °~
60 °, lower floor's overfire air jet (4) enters to spray angle [alpha] 2 for 40 °~50 °.
The effluxvelocity of described each layer overfire air jet is identical, is 70~90m/s, and Secondary Air is fed with cold wind.
The ratio between lower floor's Secondary Air air quantity and upper strata Secondary Air air quantity are 16:1, effluxvelocity is identical to be 70~90m/s, two
Secondary wind is fed with cold wind.
10 ° are differed between the incident angle of the two-layer overfire air jet to be preferred.
When burning treatment calorific value is relatively low, moisture content is higher rubbish, drying garbage and the more energy of needs that catch fire, at this moment
The lower floor's overfire air jet positioned at face arch should be put into, conversely, should be put into when the calorific value of burning treatment rubbish is higher, moisture content is relatively low
Positioned at the upper strata overfire air jet of face arch.
The beneficial effects of the invention are as follows：
1st, the chamber structure without rear arch following current is to be based on recognizing Chinese low heat value, high-moisture, high-ash rubbish feature
Know, the volume heat load and grate heat release rate of burner hearth are calculated by designing, and radiation in burner hearth and convection heat transfer' heat-transfer by convection are goed deep into
Research, the new type of furnace for obtaining, this new furnace type structure causes burner hearth flame not only full of furnace cavity but also will not directly rush
Brush burner hearth wall, the wet refuse for using low heat value is especially apparent, and need not add more coal or oily auxiliary combustion.
2nd, face arch is disposed with two-layer overfire air jet, China's municipal refuse feature complicated and changeable is especially suitable for, according to not
The garbage property of same type reaches optimal burning disposal rubbish effect simultaneously real selectively using the two-layer overfire air jet of face arch
The purpose for now being generated electricity using residual heat heating.
3rd, face arch arrangement overfire air jet jet in freeze profile into good aerodynamic field with sharp gas-phase combustion,
Extend run duration of the particle in burner hearth simultaneously so that furnace cavity is fully used, form good mixing condition and simultaneously fit
Locality reduces ignition temperature, and the generation that heating power synthesizes NOx is suppressed to greatest extent.
Technical measure is simple and easy to do, not only possesses above advantage, and the chamber structure form without rear arch following current,
Under the cooperation of Secondary Air high velocity air, the heat smoke in combustion high temperature area is set to be drawn onto burner hearth front so that rubbish from burner hearth rear volume
Dry and catch fire；Oxygen-enriched atmosphere is created at after-flame section simultaneously and strengthens the radiant heat flux at this so that the combustible in slag fires
Cinder.
Flue gas is guided anterior to fire grate by the domestic common type of furnace by long back arch structure；It is logical without rear arch chamber structure
The Secondary Air (speed 80m/s) of high speed is crossed, makes flue gas turbulization in burner hearth, uniform temperature is formed after fully disorderly mixing
Field and velocity field, can fully improve efficiency of combustion, it is ensured that enough gas residence times, it is to avoid localized hyperthermia corrodes.
Brief description of the drawings
Fig. 1 is incinerator of the present invention without rear arch following current equipment；
Fig. 2 is top view of the invention；
Fig. 3 is left view of the invention；
Fig. 4 is face arch lower floor overfire air jet speed vector figure of the invention.
In figure：1 secondary air channel, 2 secondary air registers, 3 upper strata overfire air jets, 4 lower floor's overfire air jets, 5 face arch, 6 face arch
Lower header, 7 burner hearths, wall after 8,9 first flues, 10 aditus laryngis upper strata overfire air jets, 11 aditus laryngis lower floor overfire air jets, 12 burn
Stove both walls, 13 garbage feeding buckets, 14 charging baffle plates, 15 water-cooled skewed slots, 16 pushers, 17 ash buckets, 18 fire grates, 19 mucking machines.
Specific embodiment
Specific embodiment of the invention is described in further detail below, but embodiments of the present invention are not limited to
This.
Embodiment 1
As shown in figure 1, in the incinerator both walls 12 on existing basis, garbage feeding bucket 13 feeds baffle plate 14, water-cooled skewed slot
15, pusher 16, ash bucket 17, fire grate 18, on the basis of mucking machine 19, the present invention particularly has flue 9, has stove below flue 9
Thorax 7, the side of burner hearth 7 one is that 5 and preceding confession lower header 6 are supplied before having in rear wall 8, burner hearth 7, the preceding water-cooling wall fin for 9 tops
At least one upper strata overfire air jet 3 and aditus laryngis upper strata overfire air jet 10 are provided with, and at least one lower floor's Secondary Air sprays
Mouth 4, and the air inlet of aditus laryngis lower floor 11 each layers of overfire air jet of overfire air jet is respectively communicated with each layer described in secondary air channel (1)
Wind nozzle is provided with secondary air register (2) with secondary air channel (1) junction.
Embodiment 2
Identical with embodiment 1, the simply described place horizontal cross-section of upper strata overfire air jet 3 is vertical with face arch lower header 6
Distance is 1.6m~1.8m, the place horizontal cross-section of lower floor's overfire air jet 4 and the vertical range of face arch lower header 6 be 1.0m~
1.3m。
Embodiment 3
It is identical with embodiment 1, the simply two-layer overfire air jet up and down of the face arch, every layer has 6 nozzles, distinguishes successively
On face arch, two-layer has 12 overfire air jets to arranged for interval.
Embodiment 4
Same as Example 1, simply the angle of inclination beta of face arch 5 is 20 °, and upper strata overfire air jet 3 enters to spray angle [alpha] 1 for 60 °,
Lower floor's overfire air jet 4 enters to spray angle [alpha] 2 for 50 °.
Embodiment 5
Same as Example 1, simply the angle of inclination beta of face arch 5 is 10 °, and upper strata overfire air jet 3 enters to spray angle [alpha] 1 for 50 °,
Lower floor's overfire air jet 4 enters to spray angle [alpha] 2 for 40 °.
Embodiment 6
Same as Example 1, simply the angle of inclination beta of face arch 5 is 15 °, and upper strata overfire air jet 3 enters to spray angle [alpha] 1 for 55 °,
Lower floor's overfire air jet 4 enters to spray angle [alpha] 2 for 45 °.
Embodiment 7
Same as Example 1, simply the effluxvelocity of each layer overfire air jet is identical, is 70~90m/s, and Secondary Air is equal
Fed with cold wind.
Embodiment 8
As shown in Fig. 2 same as Example 1, simply every layer of overfire air jet quantity is 6, and arrangement is respectively separated successively
On face arch 5.The distance between nozzle can determine according to actual concrete condition.Upper and lower two-layer overfire air jet uses identical
Tubing and caliber, nozzle design when can according to the requirement of air quantity and wind speed select suitable nozzle tubing and caliber.
Secondary air channel 1 is connected to not shown in the upper figure of secondary air box, and Secondary Air is fed with cold wind, and secondary air flow accounts for total blast volume
30% or so, every layer of secondary air flow is controlled by corresponding secondary air register 2.
According to incinerator design parameter, calculated by thermodynamic computing and simulation, obtain the result shown in table 1.In combustion
During with low heat value, high-moisture, ash content rubbish high, using lower floor's overfire air jet, as shown in Figure 3.Result shows, without rear arch following current
Burning furnace structure in, when spraying into angle using suitable secondary air flow and wind speed, Secondary Air, turbulent condition is formed in burner hearth 7,
As shown in figure 4, there is efficiency of combustion very high, make combustible combustion in rubbish totally；Burner hearth 7 interior temperature and thermic load in a balanced way
The risk of high temperature corrosion is reduced, heating power synthesis NO is suppressed to greatest extentXGeneration.
Table 1
Claims (9)
1. incinerator is without rear arch following current equipment, including incinerator both walls, garbage feeding bucket, feeds baffle plate, water-cooled skewed slot,
Pusher, ash is trembled, fire grate, mucking machine, it is characterized in that there is flue (9), having in burner hearth (7), burner hearth (7) in flue (9) lower section has
One side is that have face arch (5) and face arch lower header (6), the water-cooling wall fin on face arch (9) top in rear wall (8), burner hearth (7)
It is provided with least one upper strata overfire air jet (3) and aditus laryngis upper strata overfire air jet and at least one lower floor's overfire air jet
(4) and aditus laryngis lower floor overfire air jet 11, the air inlet of each layer overfire air jet is respectively communicated with each layer described in secondary air channel (1)
Wind nozzle is connected with secondary air register (2) with secondary air channel (1).
2. incinerator according to claim 1 is without rear confession following current equipment, it is characterized in that described upper strata Secondary Air sprays
Horizontal cross-section where mouth (3) is 1.6m~1.8m with preceding confession lower header (6) vertical range.
3. incinerator according to claim 1 is without rear confession following current equipment, it is characterized in that lower floor's overfire air jet (4) institute
It is 1.0m~1.3m in horizontal cross-section and preceding confession lower header (6) vertical range.
4. incinerator according to claim 1 is without rear confession following current equipment, it is characterized in that described two-layer up and down is secondary
Wind nozzle, every layer has 6 nozzles, is respectively separated successively before being arranged in and supplies upper, and two-layer has 12 overfire air jets.
5. incinerator according to claim 1 is without rear confession following current equipment, it is characterized in that the described preceding inclination for (5)
Angle beta is 10 °~20 °, and upper strata overfire air jet (3) enters nozzle angle a1 for 50 °~60 °.
6. incinerator according to claim 1 is without rear confession following current equipment, it is characterized in that lower floor's overfire air jet (4) enters
Spray angle degree a2 is 40 °~50 °.
7. incinerator according to claim 1 is without rear confession following current equipment, it is characterized in that described each layer Secondary Air sprays
The effluxvelocity of mouth is identical, is 70~90m/s, and Secondary Air is fed with cold wind.
8. incinerator according to claim 1 is without rear confession following current equipment, it is characterized in that lower floor's Secondary Air air quantity with it is upper
The ratio between layer secondary air flow is 16：1, effluxvelocity is identical to be 70~90m/s, and Secondary Air is fed with cold wind.
9. incinerator according to claim 1 is without rear confession following current equipment, it is characterized in that the two-layer overfire air jet
Incident angle between differ 10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710221797.1A CN106838922A (en) | 2017-04-06 | 2017-04-06 | Incinerator is without rear arch following current equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710221797.1A CN106838922A (en) | 2017-04-06 | 2017-04-06 | Incinerator is without rear arch following current equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106838922A true CN106838922A (en) | 2017-06-13 |
Family
ID=59147115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710221797.1A Pending CN106838922A (en) | 2017-04-06 | 2017-04-06 | Incinerator is without rear arch following current equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106838922A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317520A (en) * | 2017-12-21 | 2018-07-24 | 北方重工集团有限公司 | A kind of garbage incinerator double-layer vortex secondary air system |
| CN108916887A (en) * | 2018-09-12 | 2018-11-30 | 绿能（杭州）企业管理有限公司 | Suppress or eliminate the incinerator primary air arrangement of carbon monoxide |
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|---|---|---|---|---|
| CN2578687Y (en) * | 2002-10-11 | 2003-10-08 | 华夏长城环境工程有限公司 | Raddle refuse incinerators |
| CN102519044A (en) * | 2011-12-27 | 2012-06-27 | 华南理工大学 | Front arch secondary air regulation device for garbage incinerator |
| CN202719609U (en) * | 2012-05-25 | 2013-02-06 | 广州环投技术设备有限公司 | Selective air distribution and combustion equipment for garbage incinerator |
| CN105351940A (en) * | 2015-12-10 | 2016-02-24 | 光大环保（中国）有限公司 | Downstream low-nitrogen combustion waste incinerator and combustion method thereof |
| CN206755183U (en) * | 2017-04-06 | 2017-12-15 | 广州环保投资集团有限公司 | Waste incinerator is without rear arch following current equipment |
-
2017
- 2017-04-06 CN CN201710221797.1A patent/CN106838922A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2578687Y (en) * | 2002-10-11 | 2003-10-08 | 华夏长城环境工程有限公司 | Raddle refuse incinerators |
| CN102519044A (en) * | 2011-12-27 | 2012-06-27 | 华南理工大学 | Front arch secondary air regulation device for garbage incinerator |
| CN202719609U (en) * | 2012-05-25 | 2013-02-06 | 广州环投技术设备有限公司 | Selective air distribution and combustion equipment for garbage incinerator |
| CN105351940A (en) * | 2015-12-10 | 2016-02-24 | 光大环保（中国）有限公司 | Downstream low-nitrogen combustion waste incinerator and combustion method thereof |
| CN206755183U (en) * | 2017-04-06 | 2017-12-15 | 广州环保投资集团有限公司 | Waste incinerator is without rear arch following current equipment |
Non-Patent Citations (1)
| Title |
|---|
| 杨宏毅，卢英方: "《城市生活垃圾的处理和处置》", 31 July 2006 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317520A (en) * | 2017-12-21 | 2018-07-24 | 北方重工集团有限公司 | A kind of garbage incinerator double-layer vortex secondary air system |
| CN108916887A (en) * | 2018-09-12 | 2018-11-30 | 绿能（杭州）企业管理有限公司 | Suppress or eliminate the incinerator primary air arrangement of carbon monoxide |
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Application publication date: 20170613 |