CN210107456U - Secondary step air distribution device for biomass-fired hot blast stove - Google Patents
Secondary step air distribution device for biomass-fired hot blast stove Download PDFInfo
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- CN210107456U CN210107456U CN201920238441.3U CN201920238441U CN210107456U CN 210107456 U CN210107456 U CN 210107456U CN 201920238441 U CN201920238441 U CN 201920238441U CN 210107456 U CN210107456 U CN 210107456U
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- Prior art keywords
- air supply
- secondary air
- hearth
- biomass
- distribution device
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- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims description 3
- 239000002028 Biomass Substances 0.000 abstract description 21
- 238000002485 combustion reaction Methods 0.000 abstract description 12
- 239000000779 smoke Substances 0.000 abstract description 9
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 230000011218 segmentation Effects 0.000 abstract description 3
- 235000019504 cigarettes Nutrition 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002802 bituminous coal Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 235000017060 Arachis glabrata Nutrition 0.000 description 1
- 244000105624 Arachis hypogaea Species 0.000 description 1
- 235000010777 Arachis hypogaea Nutrition 0.000 description 1
- 235000018262 Arachis monticola Nutrition 0.000 description 1
- 239000004484 Briquette Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000020232 peanut Nutrition 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000010099 solid forming Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Landscapes
- Solid-Fuel Combustion (AREA)
Abstract
The utility model discloses a secondary step air distribution device for a biomass-fired hot blast stove, which comprises a secondary air supply outlet arranged on the side wall of a hearth, wherein the secondary air supply outlet is connected with a secondary air supply blower through a secondary air supply pipeline; the secondary air supply outlets are regularly distributed on the side wall of the hearth, the secondary air supply outlets are divided into a plurality of groups, the secondary air supply outlets of different groups are respectively arranged at different heights of the hearth, and the air supply outlets of each group are distributed on the periphery of the hearth at the same height; the secondary air supply pipeline comprises annular air supply branch pipelines and an air supply main pipeline, each group of secondary air supply outlets are communicated with the annular air supply branch pipelines, all the annular air supply branch pipelines are communicated with the air supply main pipeline, and control valves are arranged on the annular air supply branch pipelines and the air supply main pipeline. The utility model discloses can in time, segmentation, reasonable, effectively mend the secondary amount of wind according to the staged characteristics of biomass combustion, satisfy the required oxygen demand of each stage burning, reduce and stop the production of black cigarette and smoke pollutants.
Description
Technical Field
The utility model relates to a burn living beings hot-blast furnace, specifically speaking relate to a secondary step air distribution device for burning living beings hot-blast furnace.
Background
The biomass briquette fuel is also called biomass compressed fuel, is fuel formed by compressing biomass through special equipment, is formed by extruding agricultural and forestry wastes such as loose crop straws, rice hulls, peanut shells, corncobs, branches, wood chips and the like, and does not contain any additive or adhesive. The energy density is equivalent to that of medium-quality bituminous coal, the fire power is lasting, the combustion performance is good, and the coal-saving bituminous coal can be used as a household fuel, an industrial or service boiler and a fuel for power generation of a biomass power plant instead of coal. The biomass solid forming fuel is convenient to store, transport and use, clean, environment-friendly and high in combustion efficiency, and is an important modern renewable energy source.
At present, cities in China have a large number of domestic coal-fired boilers and industrial coal-fired boilers, most of the domestic coal-fired boilers and industrial coal-fired boilers are distributed in the cities and around the cities, and the quality of air in the cities and around the cities is directly influenced due to the unqualified discharge. Clean biomass is used for replacing coal and carbon, and the biomass-based biomass is the first choice for use in urban life and industrial boilers. However, the existing grate-firing coal-fired boiler can only improve the efficiency by reforming biomass, and achieves the purposes of environmental protection, energy conservation and economy.
The calorific value of the biomass fuel is about 3800Kcal/kg, the hearth structure of the existing hot blast stove is adopted, only blast air combustion is carried out at a feed inlet, the combustion effect is poor, the combustion is insufficient, and the content of black smoke and smoke pollutants is high.
SUMMERY OF THE UTILITY MODEL
Based on the technical problem, the utility model provides a secondary step air distribution device for firing living beings hot-blast furnace.
The utility model discloses the technical solution who adopts is:
a secondary step air distribution device for a biomass-fired hot blast stove comprises a secondary air supply outlet arranged on the side wall of a hearth, wherein the secondary air supply outlet is connected with a secondary air supply blower through a secondary air supply pipeline; the secondary air supply outlets are regularly distributed on the side wall of the hearth, the secondary air supply outlets are divided into a plurality of groups, the secondary air supply outlets of different groups are respectively arranged at different heights of the hearth, and the air supply outlets of each group are distributed on the periphery of the hearth at the same height; the secondary air supply pipeline comprises annular air supply branch pipelines and an air supply main pipeline, each group of secondary air supply outlets are communicated with the annular air supply branch pipelines, all the annular air supply branch pipelines are communicated with the air supply main pipeline, and control valves are arranged on the annular air supply branch pipelines and the air supply main pipeline.
Preferably, the secondary air supply outlet is arranged on the side wall of the hearth in an inclined downward manner, and an included angle of 30-45 degrees is formed between the secondary air supply outlet and the horizontal plane.
Preferably, the inner wall of the hearth is provided with an air distribution device corresponding to the secondary air supply port, the air distribution device comprises a stainless steel screen, and a plurality of stones are filled in the stainless steel screen.
Preferably, an inclined front arch structure is arranged on the front surface of the hearth, and an included angle of 47 degrees is formed between the inclined front arch structure and the horizontal plane.
Preferably, the bottom of the hearth is provided with a plurality of slag outlets.
The utility model has the beneficial technical effects that:
the utility model discloses can in time, segmentation, reasonable, effectively mend the secondary amount of wind according to the staged characteristics of biomass combustion. Under the conditions of ensuring the optimal furnace excess air amount and the temperature of each combustion area, the oxygen demand required by combustion in each stage is met, 70% of volatile matters generated by drying and cracking of biomass are completely combusted, fixed carbon is burnt out, and black smoke (biomass volatile matters, oxides and unburned fuel fragments unburnt in biomass smoke components) and smoke pollutants are reduced and eliminated.
Drawings
The present invention will be further explained with reference to the following detailed description and accompanying drawings:
FIG. 1 is a schematic view of the structural principle of the present invention, mainly illustrating a schematic view of one of the secondary air supply outlets disposed on the sidewall of the furnace;
FIG. 2 is a schematic view of the structural principle of the secondary air supply opening of the present invention distributed on the furnace;
fig. 3 is a schematic diagram of the side view structure principle of the present invention.
In the figure: 1-hearth side wall, 2-secondary air supply outlet, 3-secondary air supply blower, 4-annular air supply branch pipeline, 5-main air supply pipeline, 6-slag discharge outlet, 7-feed hopper, 8-conveyor belt and 9-front arch structure.
Detailed Description
The secondary step air distribution device for the biomass-fired hot blast stove comprises a secondary air supply outlet 2 arranged on the side wall 1 of a hearth, and the secondary air supply outlet 2 is connected with a secondary air supply blower 3 through a secondary air supply pipeline. The secondary air supply outlets 2 are regularly distributed on the side wall of the hearth, the secondary air supply outlets are divided into a plurality of groups, the secondary air supply outlets of different groups are respectively arranged at different heights of the hearth, and the air supply outlets of each group are distributed on the periphery of the same height of the hearth. The secondary air supply pipeline comprises annular air supply branch pipelines 4 and an air supply main pipeline 5, each group of secondary air supply outlets are communicated with the annular air supply branch pipelines 4, all the annular air supply branch pipelines 4 are communicated with the air supply main pipeline 5, and control valves are arranged on the annular air supply branch pipelines and the air supply main pipeline. The bottom of the hearth is provided with a plurality of slag outlets 6.
The utility model discloses can in time, segmentation, reasonable, effectively mend the secondary amount of wind according to the staged characteristics of biomass combustion. Under the conditions of ensuring the optimal furnace excess air amount and the temperature of each combustion area, the oxygen demand required by combustion in each stage is met, 70% of volatile matters generated by drying and cracking of biomass are completely combusted, fixed carbon is burnt out, and black smoke (biomass volatile matters, oxides and unburned fuel fragments unburnt in biomass smoke components) and smoke pollutants are reduced and eliminated.
As right the utility model discloses a further design, secondary supply-air outlet 2 is the slope and arranges downwards on furnace's lateral wall, and secondary supply-air outlet personally submits 30-45 degrees contained angles with the level, and this structural arrangement mode can make the secondary amount of wind can be smooth and easy get into furnace in, and can not lead to the fact the influence to furnace's intensity etc..
Further, be provided with the air distribution device in the inner wall of furnace and corresponding secondary air supply mouth department, the air distribution device includes the stainless steel screen cloth, is filled with a plurality of stones in the inside of stainless steel screen cloth. The secondary air quantity can be further uniformly distributed through the gaps among the stones, and the secondary air supply and distribution effects are further enhanced.
Furthermore, an inclined front arch structure 9 is arranged on the front surface of the hearth, and an included angle of 47 degrees is formed between the inclined front arch structure and the horizontal plane. The utility model discloses corresponding biomass fuel's characteristic, intentionally increase the height of preceding arch structure, promote furnace capacity for biomass fuel can further fully burn.
Parts not described in the above modes can be realized by adopting or referring to the prior art.
The basic principles and preferred embodiments of the present invention have been described above, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the structure of the present invention, and these should be considered as the protection scope of the present invention.
Claims (5)
1. The utility model provides a secondary step air distribution device for firing living beings hot-blast furnace which characterized in that: the secondary air supply outlet is connected with a secondary air supply blower through a secondary air supply pipeline; the secondary air supply outlets are regularly distributed on the side wall of the hearth, the secondary air supply outlets are divided into a plurality of groups, the secondary air supply outlets of different groups are respectively arranged at different heights of the hearth, and the air supply outlets of each group are distributed on the periphery of the hearth at the same height; the secondary air supply pipeline comprises annular air supply branch pipelines and an air supply main pipeline, each group of secondary air supply outlets are communicated with the annular air supply branch pipelines, all the annular air supply branch pipelines are communicated with the air supply main pipeline, and control valves are arranged on the annular air supply branch pipelines and the air supply main pipeline.
2. The secondary step air distribution device for the biomass-fired hot blast stove according to claim 1, characterized in that: the secondary air supply outlet is obliquely and downwards arranged on the side wall of the hearth, and an included angle of 30-45 degrees is formed between the secondary air supply outlet and the horizontal plane.
3. The secondary step air distribution device for the biomass-fired hot blast stove according to claim 1, characterized in that: the inner wall of the hearth is provided with an air distribution device corresponding to the secondary air supply port, the air distribution device comprises a stainless steel screen, and a plurality of stones are filled in the stainless steel screen.
4. The secondary step air distribution device for the biomass-fired hot blast stove according to claim 1, characterized in that: an inclined front arch structure is arranged on the front face of the hearth, and an included angle of 47 degrees is formed between the inclined front arch structure and the horizontal plane.
5. The secondary step air distribution device for the biomass-fired hot blast stove according to claim 1, characterized in that: the bottom of the hearth is provided with a plurality of slag discharge ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920238441.3U CN210107456U (en) | 2019-02-26 | 2019-02-26 | Secondary step air distribution device for biomass-fired hot blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920238441.3U CN210107456U (en) | 2019-02-26 | 2019-02-26 | Secondary step air distribution device for biomass-fired hot blast stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210107456U true CN210107456U (en) | 2020-02-21 |
Family
ID=69533187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920238441.3U Expired - Fee Related CN210107456U (en) | 2019-02-26 | 2019-02-26 | Secondary step air distribution device for biomass-fired hot blast stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210107456U (en) |
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2019
- 2019-02-26 CN CN201920238441.3U patent/CN210107456U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |