CN2804615Y - Burner able to burn mixed live substance and coal powder and reburning denitration of the same - Google Patents
Burner able to burn mixed live substance and coal powder and reburning denitration of the same Download PDFInfo
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- CN2804615Y CN2804615Y CN 200520020559 CN200520020559U CN2804615Y CN 2804615 Y CN2804615 Y CN 2804615Y CN 200520020559 CN200520020559 CN 200520020559 CN 200520020559 U CN200520020559 U CN 200520020559U CN 2804615 Y CN2804615 Y CN 2804615Y
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- living beings
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Abstract
The utility model relates to a burning device, which is capable of burning mixed biomass and coal powder in a composite mode and reburning denitration of the same and relates to the burning device. The existing burning device has the abuses that the discharge amount of NO x is large and energy source of the biomass is not capable of being used effectively. The utility model comprises a furnace chamber 1, wherein a coal powder main burning area 1-1 is arranged in the furnace chamber 1; four corners of the coal powder main burning area 1-1 of the furnace chamber are provided with dark and light spouts 2 of the burning device; side walls or the four corners of the furnace chamber 1 are also provided with biomass spouts 3-1 of the burning device. The utility model has the advantages that the utility model can reduce the discharge amount of NO x more than 60%; the biomass which is sprayed in ensures fire, combustion and burning-out of biomass fuel, realizes large scale utilization of the biomass, reduces discharge of the greenhouse gas CO2 and reduces discharge of the SOx. The utility model has the advantage of simple structure.
Description
Technical field:
The utility model relates to a kind of burner.
Background technology:
Coal dust firing is the important source that forms nitrogen oxide (NOx), and the NOx discharge capacity that uses anthracite, meager coal boiler usually is at 900～1200mg/m
3, the NOx discharge capacity that uses bituminous coal fired boiler is at 600～850mg/m
3, the NOx discharge capacity that uses boiler using brown coal is at 400～600mg/m
3Nitrogen oxide (NOx) is the primary pollution source that causes atmosphere pollution, and it destroys ecological environment except forming acid rain, can also form photochemical fog, harm humans health.In addition, the SOx discharge capacity height in the coal-burning boiler.Coal burning is one of main source of NOx; pollute in order to control serious day by day NOx; new " thermal power plant's atmosphere pollutants emission standards " of State Environmental Protection Administration and State Administration for Quality Supervision and Inspection and Quarantine's issue (GB13223-2003) comes into effect on January 1st, 2004; " discharge standard " standard in the past is strict more, reaches coal-fired dry ash free basis volatile matter content at times discharged nitrous oxides newly-built and the active service unit is all stipulated accordingly.If do not take the low NOx drainage measure, be difficult to satisfy the emission request of NOx.State Development Planning Commission, the Ministry of Finance, State Environmental Protection Administration, State Economic and Trade Commission rose nitrogen oxide are directly charged to the unit that discharges environmental contaminants for 0.6 yuan by each pollutional equivalent (the blowdown equivalent of nitrogen oxide is 0.95 kilogram) according to " collection of drainage dues standard management way " regulation that State Council's " collection of drainage dues use and management regulations " (No. the 369th, State Council Decree word) formulates on July 1st, 2004.
The NOx control of pulverized-coal fired boiler mainly contains two kinds of approach, and the one, adopt the generation of deep or light low NO technology minimizing NOx, the 2nd, from flue gas, remove NOx.Adopt deep or light spout to generate suppressing NOx, reduce the NOx discharge capacity, therefore its denitration rate can't satisfy the environmental requirement of increasingly stringent below 20%～30%.The denitration rate of natural gas reburning method can reach more than 70%, mainly adopts natural gas at present both at home and abroad aspect denitration by refueling, and the China's natural gas resource mainly is distributed in western part, so the denitration of east and coastal area development natural gas reburning is restricted.Biomass energy is one of green energy resource, comes from solar energy.Green plants approximately can catch 0.024% solar energy, and is transformed into organic chemical energy, i.e. biomass energy in the plant by photosynthesis.Development is that the green energy resource of raw material transforms with living beings; can realize carbon dioxide discharge-reduction; being that China realizes the important channel that energy crisis was efficiently utilized, solved to biomass energy, is again that China strengthens improvement of the ecological environment, reduces the greenhouse gas emission important channel.The development and use biomass energy all is that crucial meaning is arranged to the development of China's power industry and whole national economy.
The utility model content:
The utility model is exactly to have the drawback that the NOx discharge capacity is big, can not effectively utilize biomass energy at existing burner, thereby provide a kind of living beings of NOx discharge capacity and burner of coal dust compound combustion and recombustion of biomass denitration of reducing greatly again when can efficiently utilize biomass energy, it comprises burner hearth 1, be provided with coal dust master combustion zone 1-1 in the burner hearth 1, on four jiaos in the burner hearth of described coal dust master combustion zone 1-1, the deep or light spout 2 of burner is installed, on the sidewall of described burner hearth 1 or four jiaos, biomass burner spout 3-1 is installed also.The utlity model has following advantage: 1. utilize prior biological matter resource, effectively reduce the NOx discharge capacity.By adopting deep or light spout can reduce the NOx that coal dust firing forms to a certain extent, the NOx discharging is general to descend 20%～30%.Biomass fuel volatile matter height, biomass burner fire the NOx that will form again and further are reduced to N
2Its comprehensive denitration rate reaches more than 60%.2. biomass fuel general heating amount is low, moisture is high, be difficult for catching fire, it is strong that pulverized coal bias combustion surely fires ability, biomass fuel directly sprays in the high-temperature flue gas that coal dust firing forms, and has remedied the not fire-hazardous shortcoming of biomass fuel, has guaranteed the catching fire of biomass fuel, burning and after-flame.3. the utility model can be transformed the active service unit boiler.Be adapted to various pulverized-coal fired boilers, have broad application prospects.4. realize the extensive utilization of living beings, reduced greenhouse gases CO
2Discharging.5. reduce the SOx discharging.The content of sulphur is low in the biomass fuel, spray into biomass fuel after, part biological matter fuel has replaced a part of coal dust, and total SOx discharging is descended.
Description of drawings:
Fig. 1 is a structural representation of the present utility model, and Fig. 2 is the structural representation of the specific embodiment two, and Fig. 3 is the structural representation of the specific embodiment three, Fig. 4 be Fig. 1 the A-A cutaway view, Fig. 5 is the B-B cutaway view of Fig. 2, Fig. 6 is the C-C cutaway view of Fig. 3.
The specific embodiment:
The specific embodiment one: with reference to Fig. 1, Fig. 4, present embodiment comprises burner hearth 1, be provided with coal dust master combustion zone 1-1 in the burner hearth 1, on four jiaos in the burner hearth of described coal dust master combustion zone 1-1, the deep or light spout 2 of burner is installed, on the sidewall of described burner hearth 1 or four jiaos, biomass burner spout 3-1 is installed also.The described biomass burner spout of present embodiment 3-1 is installed on the burner hearth sidewall of coal dust master combustion zone 1-1.Described biomass burner spout 3-1 and connected living beings carry tube connector 3-2 to form biomass burner 3 jointly.Described biomass burner 3 is connected with the air-transport system 6 of biomass fuel, the air-transport system 6 of biomass fuel comprises biomass fuel hopper 6-1, biomass fuel batcher 6-2, blender 6-3 and Pneumatic conveying pipeline 6-4, described biomass fuel hopper 6-1 is arranged on the top of biomass fuel batcher 6-2, and the port of export of biomass fuel batcher 6-2 and the port of export of Pneumatic conveying pipeline 6-4 all carry tube connector 3-2 to be communicated with living beings simultaneously.
When the biomass fuel water content that uses bigger, catch fire after-flame more at need, adopt present embodiment biomass burner spout 3-1 to be installed in position on the burner hearth sidewall of coal dust master combustion zone 1-1, like this, coal dust master combustion zone 1-1 is again the biomass combustion district simultaneously, for biomass fuel, the high temperature that relies on coal dust firing to form can guarantee catching fire of it; Simultaneously, biomass fuel is longer at residing time in furnace, can guarantee its sufficient burning.In addition, because biomass fuel is compared with coal dust, general nitrogen content is low, substitutes coal dust with a large amount of biomass fuels, can guarantee lower NO
XDischarging; Simultaneously, biomass fuel a large amount of fugitive constituents of separating out NO that also coal dust firing can be formed
XBe reduced into N
2Thereby, further reduce NO
XDischarging.
The specific embodiment two: with reference to Fig. 2, in the present embodiment, the top of described biomass combustion district 1-1 is reducing zone 1-2, the difference of the present embodiment and the specific embodiment one is, biomass burner spout 3-1 is installed on the burner hearth sidewall of reducing zone 1-2, with reference to Fig. 5, at this moment, reducing zone 1-2 is the biomass combustion district.
When one time the wind breeze airflow is sent into burner hearth 1, be divided into thick coal culm air-flow and thin powdered coal air-flow by the shade burner spout respectively in the horizontal direction, the thick coal culm air-flow is positioned at the side of waring oneself in front of a fire, the thick coal culm air-flow can reduce the ignition heat of a wind breeze airflow, flame propagation velocity is accelerated, can guarantee coal dust in the 1-1 smooth combustion of main combustion zone, the coal dust firing of thick coal culm air-flow and thin powdered coal air-flow is in and departs from the stoichiometric ratio burning, helps reducing the discharging of NOx.The fuel that accounts for into stove total amount of heat 80%～99.5% is coal dust, and burns at main combustion zone 1-1.Adopt the device of this part can reduce NOx growing amount 20%～30%.Be stored among the biomass fuel hopper 6-1 through the biomass fuel that is crushed to certain particle size, biomass fuel is quantitatively provided by batcher 6-2, sends into biomass burner 3 through blender 6-3 by the adjustable warm wind of temperature that ajutage 6-4 comes.The fuel that accounts for into stove total amount of heat 0.5%～20% is biomass fuel, the biomass fuel primary mixture sprays into the reducing zone 1-2 of burner hearth 1 through biomass fuel combustion spout 3-1, finish the burning of biomass fuel, for the fabulous biomass fuel of the combustibility of catching fire, its efficiency of combustion can reach more than 99%, reduction reaction takes place with NOx in the high-temperature flue gas of the main combustion zone 1-1 of burner hearth 1 in biomass fuel nitrogen content low volatile height secondly, and NOx is reduced to N
2Thereby, the discharge capacity of the NOx of reduction pulverized-coal fired boiler.Adopt the biomass fuel denitration by refueling can make the discharge capacity of NOx reduce by 30%～40% again, its comprehensive denitration rate is reached more than 60%.
The specific embodiment three: with reference to Fig. 3, on the top of reducing zone 1-2 is burning-out zone 1-3, present embodiment and the specific embodiment two differences are, on the burner hearth sidewall of burning-out zone 1-3 or four jiaos after-flame wind snout 4 are installed, and described after-flame wind snout 4 is communicated with air supply duct 7; With reference to Fig. 6, biomass burner spout 3-1 is installed on four jiaos in the burner hearth of reducing zone 1-2.
After-flame wind snout 4 is mainly used in biomass fuel and the coal dust after-flame provides oxygen.After-flame wind is sent at the burning-out zone 1-3 of upper furnace, owing to there is the part air to spray into this district from spout 4, can impel biomass fuel and coal dust particle further to burn, reduced the air capacity of lower furnace simultaneously, lower furnace coal dust and living beings are under the lower excess air burn, more help reducing NO
XDischarging.The flue gas that biomass fuel and coal dust completing combustion produce carries out heat exchange through superheater, economizer, reheater and air preheater, after deduster purify, under the effect of air-introduced machine, discharge, can better realize the function of living beings and coal dust compound combustion and recombustion of biomass denitration like this by chimney.
Burning by present embodiment, can realize the burn-off rate height of coal dust and biomass fuel, the purpose that the discharge capacity of NOx is low, both can finish using energy source to biomass fuel, the high problem of discharge capacity of the NOx that can produce pulverized-coal fired boiler is carried out denitration again, total SOx discharging descends, and has reduced greenhouse gases CO
2Discharging reaches the purpose of utilizing the energy, protection environment, and to the transformation of active service boiler and newly-built unit boiler, this technology has popularization, use value widely easily.
Claims (7)
1, the burner of a kind of living beings and coal dust compound combustion and recombustion of biomass denitration, it comprises burner hearth (1), be provided with coal dust master combustion zone (1-1) in the burner hearth (1), it is characterized in that on four jiaos in the burner hearth of described coal dust master combustion zone (1-1), the deep or light spout of burner (2) being installed, on the sidewall of described burner hearth (1) or four jiaos, biomass burner spout (3-1) is installed also.
2, the burner of a kind of living beings according to claim 1 and coal dust compound combustion and recombustion of biomass denitration is characterized in that described biomass burner spout (3-1) is installed on the burner hearth sidewall of coal dust master combustion zone (1-1) or four jiaos.
3, the burner of a kind of living beings according to claim 1 and coal dust compound combustion and recombustion of biomass denitration, the top that it is characterized in that described biomass combustion district (1-1) is reducing zone (1-2), and described biomass burner spout (3-1) is installed on the burner hearth sidewall of reducing zone (1-2) or four jiaos.
4, the burner of a kind of living beings according to claim 3 and coal dust compound combustion and recombustion of biomass denitration, the top that it is characterized in that described reducing zone (1-2) is burning-out zone (1-3), on the burner hearth sidewall of burning-out zone (1-3) or four jiaos after-flame wind snout (4) is installed.
5, the burner of a kind of living beings according to claim 4 and coal dust compound combustion and recombustion of biomass denitration is characterized in that described after-flame wind snout (4) is communicated with air supply duct (7).
6,, it is characterized in that described biomass burner spout (3-1) and connected living beings carry tube connectors (3-2) to form biomass burner (3) jointly according to the burner of claim 1,2,3,4 or 5 described a kind of living beings and coal dust compound combustion and recombustion of biomass denitration.
7, the burner of a kind of living beings according to claim 6 and coal dust compound combustion and recombustion of biomass denitration, it is characterized in that described biomass burner (3) is connected with the air-transport system (6) of biomass fuel, the air-transport system of biomass fuel (6) comprises biomass fuel hopper (6-1), biomass fuel batcher (6-2), blender (6-3) and Pneumatic conveying pipeline (6-4), described biomass fuel hopper (6-1) is arranged on the top of biomass fuel batcher (6-2), and the port of export of the port of export of biomass fuel batcher (6-2) and Pneumatic conveying pipeline (6-4) all carries tube connector (3-2) to be communicated with living beings simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520020559 CN2804615Y (en) | 2005-04-06 | 2005-04-06 | Burner able to burn mixed live substance and coal powder and reburning denitration of the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520020559 CN2804615Y (en) | 2005-04-06 | 2005-04-06 | Burner able to burn mixed live substance and coal powder and reburning denitration of the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2804615Y true CN2804615Y (en) | 2006-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520020559 Expired - Lifetime CN2804615Y (en) | 2005-04-06 | 2005-04-06 | Burner able to burn mixed live substance and coal powder and reburning denitration of the same |
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| CN (1) | CN2804615Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312430C (en) * | 2005-04-06 | 2007-04-25 | 哈尔滨工业大学 | Biomass and powder coal mixed combustion and biomass recombusting and denitrating combustion apparatus |
| CN102980201A (en) * | 2012-12-18 | 2013-03-20 | 中国轻工业武汉设计工程有限责任公司 | Mixed fit device for biomass fuel, paper sludge and coals |
| CN108413383A (en) * | 2018-03-06 | 2018-08-17 | 西安交通大学 | A kind of coal-burning boiler biomass coupling combustion system |
-
2005
- 2005-04-06 CN CN 200520020559 patent/CN2804615Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312430C (en) * | 2005-04-06 | 2007-04-25 | 哈尔滨工业大学 | Biomass and powder coal mixed combustion and biomass recombusting and denitrating combustion apparatus |
| CN102980201A (en) * | 2012-12-18 | 2013-03-20 | 中国轻工业武汉设计工程有限责任公司 | Mixed fit device for biomass fuel, paper sludge and coals |
| CN102980201B (en) * | 2012-12-18 | 2014-11-12 | 中国轻工业武汉设计工程有限责任公司 | Mixed fit device for biomass fuel, paper sludge and coals |
| CN108413383A (en) * | 2018-03-06 | 2018-08-17 | 西安交通大学 | A kind of coal-burning boiler biomass coupling combustion system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20050406 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |