CN201014914Y - Biomass burning hot air generator - Google Patents
Biomass burning hot air generator Download PDFInfo
- Publication number
- CN201014914Y CN201014914Y CNU200720103931XU CN200720103931U CN201014914Y CN 201014914 Y CN201014914 Y CN 201014914Y CN U200720103931X U CNU200720103931X U CN U200720103931XU CN 200720103931 U CN200720103931 U CN 200720103931U CN 201014914 Y CN201014914 Y CN 201014914Y
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- Prior art keywords
- hot air
- air
- utility
- model
- combustion
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- Expired - Fee Related
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- 239000002028 Biomass Substances 0.000 title abstract description 9
- 238000002485 combustion reaction Methods 0.000 claims abstract description 23
- 239000000126 substance Substances 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 7
- 230000003134 recirculating effect Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000446 fuel Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 2
- 239000002154 agricultural waste Substances 0.000 abstract 1
- 235000013305 food Nutrition 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 6
- 238000005243 fluidization Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005245 sintering Methods 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 208000011580 syndromic disease Diseases 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Images
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses a hot air generating device that burns biomass, and substantially consists of a circulating fluidized bed boiler that burns biomass, a biomass feeding system, an air-water heat exchanger, a circulating blower, and a thermodynamic instrument. The generating device is basically characterized in that the circulating fluidized bed boiler mainly uses biomasses, such as agricultural wastes, as the fuel, and water or organic heat carrier as the medium; the four walls of the combustion chamber in the front part of the boiler are water-cooled walls, and the air distribution plates are all provided with directional air caps that are arranged in the rotary way; and the combustion chamber has a high empty-bed speed. The utility model is also characterized in that the device is provided with a secondary heat exchange system that adopts the frequency conversion technology, the hot air recirculation technology after heating and other technologies to ensure the stable flow and temperature of the hot air. The utility model has the advantages of energy saving, environmental friendliness, precision and controllability of the hot air produced, extremely stable air volume and temperature, and stability, reliability, economization and environmental friendliness when used to bake agricultural products, foods and other materials requiring baking with low-temperature hot air.
Description
Technical field
The utility model relates to a kind of hot air generator of biological substance for combustion, refers more particularly to a kind of CFBB of biological substance for combustion, belongs to biomass energy, renewable energy utilization apparatus field.
Background technology
Because living beings have characteristics such as moisture is more, fugitive constituent is high, fuel density is little, structure is more open, the selection of the design and running mode of biomass combustion equipment need be considered the combustion characteristics of variety classes living beings.In the prior art, the grate furnace biomass burning because living beings fugitive constituent speed of separating out is fast, can mixes the inhomogeneous incomplete combustion that causes because of air, thereby influence efficiency of combustion; Because the living beings moisture is many, be difficult to catch fire simultaneously, also influence its efficiency of combustion at bed face.The circulating fluidized bed boiler fuel wide adaptability can be used for the burning of inferior fuel, solid waste, city and fuel such as industrial sludge, living beings.In the prior art, when CFBB is used for biomass combustion, the emulsion zone temperature can be controlled at 850～950 ℃ usually.Because living beings fugitive constituent height, density is little, is entrained to the dilute-phase zone burning easily, can make freeboard temperature higher, easily causes living beings sintering in stove, thereby influences the efficient and the normal operation of boiler.In the prior art, the blast cap of using on the CFBB air distribution plate has mushroom-shaped blast cap, the dull and stereotyped slit of back taper blast cap, bell-jar blast cap, T-shape blast cap, Γ shape wind cap, flechette-type blast cap etc. several.There is certain defective mostly in these several blast caps: mushroom-shaped blast cap, the dull and stereotyped slit of back taper blast cap do not have orientating function, occur leaking the slag phenomenon easily; The bell-jar blast cap is bigger to the water-cooling wall wearing and tearing, and is also bigger to adjacent blast cap wearing and tearing, a little less than the directed deslagging function; The easy cloth wind of Γ shape wind cap is inhomogeneous, easily causes the emulsion zone air turbulence, and the whole fluid effect that weakens only is used near the waste incineration fluid bed slag-drip opening that needs special deslagging usually; Flechette-type blast cap ubiquity air compartment leaks the slag phenomenon.
For heat air source, external normal fuel oil, the fuel gas hot-blast stove of adopting, the combustion product of fuel-firing gas-firing and air carry out the partition heat exchange and produce hot blast, and the method that adopts fired coal combustion to produce hot blast by dividing wall type heat exchanger is also arranged.Adopt the defective of partition heat exchange to be, hot blast temperature is subjected to the disturbance of fuel-side bigger, and difficulty makes hot blast temperature keep stable.
The utility model content
The purpose of this utility model is to provide a kind of hot air generator of biological substance for combustion.This device is fuel with the agriculture and forestry organic waste material mainly, can make living beings that sintering does not take place in stove, can guarantee the abundant burning of stove endogenous substance fuel again, and the stable of hot blast temperature and flow guaranteed in the use of two times heat changing device and converter technique.
The utility model is achieved through the following technical solutions:
A kind of hot air generator of biological substance for combustion, it is characterized in that: this device comprises CFBB, living beings feeding system, gas-solid separator and two times heat changing device, described two times heat changing device comprises geomantic omen heat exchanger and circulating fan, and heat-exchange system of this two times heat changing device and CFBB links and heat-exchange system of CFBB links; Wind cap all is set, and the wind cap rotation is arranged on the recirculating fluidized bed air distribution plate.
In the burner hearth of CFBB of the present utility model curtain wall is set; Described living beings feeding system adopts the bipacking-auger system.
The utility model compared with prior art, have the following advantages and beneficial effect: CFBB of the present utility model is by laying the smart casting of abrasionproof monoblock type wind cap, can produce constraint to air-out direction and angle, air-out direction and intensity are controlled in order, thereby have strengthened the fluid effect in the recirculating fluidized bed; The wind cap that rotation is arranged, strengthened eddy flow fluid effect in the burner hearth, and avoided local not fluidisation or the generation of phenomenons such as fluidisation is bad, accumulation dead angle, wearing and tearing have been reduced simultaneously to adjacent blast cap, further strengthened whole fluidisation, guarantee the fluidized bed combustion of living beings, and prolonged the service life of blast cap; Lay curtain wall in the stove, reduced temperature levels and furnace outlet temperature in the burner hearth, prevented sintering, coking and the slagging scorification separator in of biomass fuel in stove.The setting of two times heat changing device had both guaranteed the safety of combustion apparatus can obtain stable hot blast air quantity and temperature again.
Description of drawings
Fig. 1 is the hot blast generation systems schematic diagram of the related biological substance for combustion of the utility model.
Fig. 2 is the schematically total figure of the recirculating fluidized bed of the related biological substance for combustion of the utility model.
Fig. 3 is that the related biological substance for combustion recirculating fluidized bed of the utility model grid plate hood is arranged schematic diagram.
Among the figure: the 1-circulating fluid bed boiler body; 2-living beings feeding system; The 3-gas-solid separator; The 4-adjusting device; 5-geomantic omen heat exchanger; The 6-circulating fan; The 7-drying system; The 8-water-cooling wall; The 9-curtain wall; The 10-wind cap; The 11-economizer.
The specific embodiment
Describe concrete structure of the present utility model, operation principle and embodiment in detail below in conjunction with accompanying drawing:
The utility model is made up of CFBB 1, living beings feeding system 2, gas-solid separator 3, geomantic omen heat exchanger 5, circulating fan 6 and Thermal Meter etc.Living beings enter into CFBB 1 by living beings feeding system 2, and the living beings feeding system adopts the bipacking-auger system, and the second level auger delivery rate in the bipacking-auger system can effectively prevent tempering far above first order delivery rate.This CFBB 1 (Fig. 2) is a medium with water or organic heat carrier, and water or organic heat-carrying agent adopt forced circulation.Boiler is made up of burner hearth and tail vertical well gas flue, and the burner hearth wall is a water-cooling wall 8, has also arranged curtain wall 9 in the stove, can guarantee to be in the temperature range that sets in the burner hearth, helps the burning of living beings and prevents sintering.On the air distribution plate wind cap 10 is set all in the burner hearth, and all wind cap 10 is arranged (Fig. 3) for rotation, make air-out direction and intensity controlled in order, strengthened fluid effect, part not fluidisation or fluidisation condition of poor have been avoided again, thereby guaranteed the active fluidization of material in the burner hearth and the abundant burning of living beings, also can reduce wearing and tearing simultaneously, prolonged blast cap service life adjacent blast cap.Be connected by gas-solid separator 3 between burner hearth and the tail vertical well, the gas-solid separator bottom takes back materials device, and the material that carries out burner hearth with flue gas turns back to after gas solid separation dress device 3 separates and participates in circulation in the burner hearth.For preventing slagging scorification, and accurately control bed temperature, the heat that burning produces passes to heat transferring medium water or organic heat carrier by water-cooling wall 8, curtain wall 9, economizer 11 etc., and WATER AS FLOW MEDIUM or organic heat carrier pass through geomantic omen heat exchanger 5 again with heat transferred cold wind then.Its advantage is, the good cooling results of heat transferring medium water or organic heat carrier is not prone to the phenomenon of burning burning body heat-transfer surface.And pass through the two times heat changing device heat exchange that geomantic omen heat exchanger 5, circulating fan 6 etc. constitute, the heat exchange effect is more stable.Simultaneously, water or organic heat carrier flow are by adjusting device 4 controls.Be partially recycled in the geomantic omen heat exchanger 5 control air quantity and wind-warm syndrome that can be more stable by the hot blast behind wind-water-to-water heat exchanger by circulating fan 6 VFC through drying system 7 back parts.The utility model hot air generator is by the secondary heat exchange system, and utilize measures such as flow regulator, frequency conversion circulating fan, dry back hot blast recirculating technique, regulate water or organic heat carrier amount and recirculation air quantity, thereby guaranteed the stable of wind-warm syndrome and air quantity, wind-warm syndrome has been changed to be controlled at ± 1 ℃.
Claims (3)
1. the hot air generator of a biological substance for combustion, it is characterized in that: this device comprises CFBB (1), living beings feeding system (2), gas-solid separator (3) and two times heat changing device, described two times heat changing device comprises geomantic omen heat exchanger (5) and circulating fan (6), and heat-exchange system of this two times heat changing device and CFBB links; Wind cap (10) all is set, and the wind cap rotation is arranged on the recirculating fluidized bed air distribution plate.
2. according to the hot air generator of the described biological substance for combustion of claim 1, it is characterized in that: curtain wall (9) is set in the burner hearth of CFBB.
3. according to the hot air generator of claim 1 or 2 described biological substance for combustion, it is characterized in that: described living beings feeding system adopts the bipacking-auger system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720103931XU CN201014914Y (en) | 2007-03-23 | 2007-03-23 | Biomass burning hot air generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720103931XU CN201014914Y (en) | 2007-03-23 | 2007-03-23 | Biomass burning hot air generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201014914Y true CN201014914Y (en) | 2008-01-30 |
Family
ID=39026713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720103931XU Expired - Fee Related CN201014914Y (en) | 2007-03-23 | 2007-03-23 | Biomass burning hot air generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201014914Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571288B (en) * | 2009-06-19 | 2011-01-26 | 北京乡电电力有限公司 | Swirl air-distribution device of biomass fluidized bed |
-
2007
- 2007-03-23 CN CNU200720103931XU patent/CN201014914Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571288B (en) * | 2009-06-19 | 2011-01-26 | 北京乡电电力有限公司 | Swirl air-distribution device of biomass fluidized bed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080130 Termination date: 20140323 |