CN202452478U - Secondary air inlet distribution type biomass boiler - Google Patents
Secondary air inlet distribution type biomass boiler Download PDFInfo
- Publication number
- CN202452478U CN202452478U CN2012202955600U CN201220295560U CN202452478U CN 202452478 U CN202452478 U CN 202452478U CN 2012202955600 U CN2012202955600 U CN 2012202955600U CN 201220295560 U CN201220295560 U CN 201220295560U CN 202452478 U CN202452478 U CN 202452478U
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- secondary air
- boiler
- air inlet
- biomass boiler
- wall
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model relates to a secondary air inlet distribution type biomass boiler which comprises a chain fire grate, an independent air chamber, a high-low combined furnace arch, a boiler pressure-bearing body, an ash blowing system, a connection smoke flue, an energy saver, an air preheater, a base and a boiler wall thermal insulation layer. A boiler wall comprises a lateral wall and a front wall. The secondary air inlet distribution type biomass boiler further comprises a secondary air inlet system and a distribution feeding device. A plurality of layers of secondary air inlet pipes are arranged on the lateral wall and the front wall to form the secondary air inlet system to achieve oxygen enriched combustion. The secondary air inlet distribution type biomass boiler improves burning efficiency, can be adaptive to different particle fuels, and is mainly used for biomass burning heat exchange and the like.
Description
Technical field
The utility model relates to biomass fired boiler, especially has the sub-material formula biomass boiler of secondary air.
Background technology
Biomass fuel is the fuel that agricultural crop straw, wood chip, sawdust, peanut shell, corncob, rice husk, branch, leaf, hay are directly utilized through compression forming.No any additives and binding agent.It is a kind of reproducible clean energy resource.This kind of boiler is biomass solid fuel (abbreviation biomass fuel) boiler, is to utilize new technology and the professional equipment type of furnace with the biomass fuel after-flame, and burn-off rate reaches 96%, remains 4% ash and can reclaim potash fertilizer.Fuel is in combustion process, and environmental pollution is little, and biomass fuel is as the fourth-largest energy beyond coal, oil, the natural gas, and it will become the future world of paramount importance one big energy.The biomass fuel sulfur compound is very low, does not have desulphurization problem, and volatile component is high, and carbon activity is high, inflammable.Under the temperature about 400 degree, the most of volatile component of biomass energy can disengage, and is translated into the gaseous fuel ratio and is easier to realize.Burning back ash content is few, and is difficult for cohering, and can simplify deashing device.Calorific capacity not only can replace coal and other fuel fully, and it is cheap at 3600-5100 kilocalorie/kilograms, and the boiler operatiopn cost reduces greatly, compares with fuel oil, combustion gas, electric boiler, and cost reduces by 60%, 40%, 70% respectively.Use biomass fuel, clean environment firendly, regenerating energy-saving meet national energy environment protection policy, obtain country and advocate energetically and promote.
At present, China city has a large amount of coal-burning boilers, wherein mostly is distributed in the city periphery, because burning all is colm; And most of sulfur content is high, and the burning measure is poor, and operant level is low; No desulfurizer, boiler over-emitting black exhaust, sulphur pollution etc. have directly influenced the air quality of city and periphery, for this reason; The cry that cancellation city coal burning boiler and coal change oil (gas), electricity is very high, and many cities have taked action, but because oil (gas) source is nervous, electricity price is expensive; The boiler operatiopn cost is high, and city thermal has inaccessible zone, produces little effect.Adopt its operating cost of biomass boiler low, and realization need not, and the auxiliary equipment processing just can reach nitride and the sulfide approximate zero is discharged.
Biomass fuel with cleaning substitutes coal, on the boiler of city, uses just to have solved above problem.But the biomass boiler of producing at present, big-and-middle-sized with CFBB in bulk, small-sized be main with fast-assembling fire-tube type reciprocating-grate boiler; Have plenty of on former coal-burning boiler and simply convert, have that fuel is single, the thermal efficiency is not high, be prone to the defective of dust stratification.
Ox material fuel with cleaning substitutes coal, on the boiler of city, uses just to have solved above problem.But the means of employing first and second air intake of at present most of boilers through coal-fired boiler reform increase the oxygen feeding amount of biomass fuel combustion process; Improve biomass combustion efficient; But because secondary wind gets into its position can absorb burner hearth when unsuitable with combination internal temperature, the heat utilization ratio after the biomass combustion release is not high.
According to the collecting and distributing property of domestic material fuel distribution and the discontinuity of most of boiler operatiopn; And biological material shape is not quite similar, and fine particulate arranged, bulk is arranged, if get into through the boiler same position; Then possibly influence combustion efficiency, be necessary to develop middle-size and small-size biomass-burning chain-grate boiler.
Summary of the invention
In view of this, the utility model provides a kind of secondary air sub-material formula biomass boiler, to improve the heat utilization ratio after biomass combustion discharges.
For realizing above-mentioned purpose; The utility model provides following technical scheme: comprise traveling-grate stoker, independent air compartment, the compound chimney arch of height, boiler pressure-bearing body, soot blower system, connection flue, energy-saving appliance, air preheater, base, furnace wall and heat-insulation layer; Furnace wall comprises side wall and front wall, also comprises secondary air system, promptly at side wall and front wall many secondary wind inleting tubes of multilayer is set; Form secondary air system, form oxygen-enriched combusting; The face arch place of composite arch establishes feed arrangement at the said high end, and said feed arrangement is the material blanking tube that is divided into two, and first branched pipe links to each other with air inlet, and the preceding buttress that second branched pipe passes the height composite arch gets into burner hearth, and the bifurcation of material blanking tube is established diaphragm valve.
Further, the set airduct of front wall gets into height burner hearth that compound chimney arch forms from the higher position to lower position.
Further, said diaphragm valve is a deflector.
Further, said material blanking tube preferably falls " Y " font.
The beneficial effect of the utility model is at side wall and front wall many secondary wind inleting tubes of multilayer to be set, composition secondary air spraying system; Get into from multi-angle when having reduced the wind speed that gets into burner hearth; Help air and contact, form oxygen-enriched combusting, improve the degree of combustion of fuel with fuel is comprehensive; Feed arrangement is provided with material blanking tube and diaphragm valve, and different material is shunted, and patch fuel gets into from the higher position, and the fine grained material gets into from the bottom, can promote the efficiency of combustion of fuel.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Below in conjunction with accompanying drawing the utility model is further described: as shown in Figure 1, mainly comprise feed arrangement 1, high-tensile traveling-grate stoker 2, detachable type independence air compartment 3, just compound chimney arch 4, secondary air system 5, boiler pressure-bearing body 6, connect flue 7, energy-saving appliance 8, connect chassis 9, air preheater 10, back-end ductwork 11, soot blower system 12, boiler foundation 13, furnace wall and heat-insulation layer 14.
Fuel is sent into feed arrangement 1 from transport, and for graininess property material, the preceding buttress that passes the height composite arch through a branched pipe wherein directly slips into burner hearth, in the compound chimney arch 4 of height with on the traveling-grate stoker 2, burns; Then through the diaphragm valve 15 in the feed arrangement, present embodiment is a deflector for lightweight fines fuel, the rotation deflector; Make lightweight fines fuel get into another branched pipe; Mix with the air of air inlet 16, it be suspended in the burner hearth burn, unburned brush lightly to drop on the fire grate burn away.
One time wind is sent into burner hearth through independent air compartment 3, and independent air compartment 3 can be regulated arbitrarily, if operate miss causes independent air compartment 3 to fill up dust stratification, the connecting plate between the detachable independent air compartment is removed dust stratification from the outside clean.Secondary wind is sprayed to burner hearth through multitube combined type secondary air system 5, and airduct is adjustable, according to different combustion positions; Can regulate wind arbitrarily, promptly many secondary wind inleting tubes of multilayer are set, constitute multitube combined type secondary air system 5 at side wall and front wall; Form oxygen-enriched combusting, improve the degree of combustion of fuel.The set airduct of front wall gets into height burner hearth that compound chimney arch forms from the higher position to lower position.
The high-temperature flue gas of fuel after the burner hearth internal combustion; Behind the waterwall tube radiant heat transfer of boiler pressure-bearing body 6,, get into energy-saving appliance 8 through connecting flue 7 then again through the convection bank convection heat transfer' heat-transfer by convection; Low-temperature flue gas after the heat exchange that feedwater is delayed in energy-saving appliance 8; Get into air preheater 10 through connecting chassis 9, get into back-end ductwork 11 at last, boiler feedwater gets into boiler pressure-bearing body 6 upper drums through energy-saving appliance 8 heat exchanges becoming high humidity steam; Steam water interface is through each heating surface Natural Circulation in the drum, and the saturated vapor that the heat absorption back forms is sent to send into through stop valve and produced the user.
With steam or the combination soot blower system 12 of compressed air through being criss-cross arranged; Purge the cigarette ash of convection bank outer surface bonding clean; Chimney arch in furnace wall and the heat-insulation layer 14 adopts large span self-locking radial brick to build by laying bricks or stones; Firm, stable is difficult for collapsing, and the external packing backplate adopts the moulding pressing block, and is elegant in appearance.Whole boiler is placed on the base 13 fixing.
Claims (4)
1. secondary air sub-material formula biomass boiler; Comprise traveling-grate stoker, independent air compartment, the compound chimney arch of height, boiler pressure-bearing body, soot blower system, connection flue, energy-saving appliance, air preheater, base, furnace wall and heat-insulation layer; Furnace wall comprises side wall and front wall
It is characterized in that,Also comprise secondary air system, promptly many secondary wind inleting tubes of multilayer are set, form secondary air system, form oxygen-enriched combusting at side wall and front wall; The face arch place of composite arch establishes feed arrangement at the said high end, and said feed arrangement is the material blanking tube that is divided into two, and first branched pipe links to each other with air inlet, and the preceding buttress that second branched pipe passes the height composite arch gets into burner hearth, and the bifurcation of material blanking tube is established diaphragm valve.
2. secondary air sub-material formula biomass boiler as claimed in claim 1 is characterized in that, the set airduct of front wall gets into height burner hearth that compound chimney arch forms from the higher position to lower position.
3. secondary air sub-material formula biomass boiler as claimed in claim 1 is characterized in that said diaphragm valve is a deflector.
4. secondary air sub-material formula biomass boiler as claimed in claim 1 is characterized in that said material blanking tube is down " Y " font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202955600U CN202452478U (en) | 2012-06-24 | 2012-06-24 | Secondary air inlet distribution type biomass boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202955600U CN202452478U (en) | 2012-06-24 | 2012-06-24 | Secondary air inlet distribution type biomass boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202452478U true CN202452478U (en) | 2012-09-26 |
Family
ID=46868340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202955600U Expired - Lifetime CN202452478U (en) | 2012-06-24 | 2012-06-24 | Secondary air inlet distribution type biomass boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202452478U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644561A (en) * | 2013-11-11 | 2014-03-19 | 浙江中吉新能源有限公司 | High-efficiency energy-saving biomass boiler system |
| CN105066119A (en) * | 2015-08-01 | 2015-11-18 | 湘潭锅炉有限责任公司 | Combined fluidized bed biomass boiler |
| CN110107884A (en) * | 2019-04-29 | 2019-08-09 | 航天科工哈尔滨风华有限公司电站设备分公司 | A kind of efficiently low NOXBurning zone fires device |
-
2012
- 2012-06-24 CN CN2012202955600U patent/CN202452478U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644561A (en) * | 2013-11-11 | 2014-03-19 | 浙江中吉新能源有限公司 | High-efficiency energy-saving biomass boiler system |
| CN105066119A (en) * | 2015-08-01 | 2015-11-18 | 湘潭锅炉有限责任公司 | Combined fluidized bed biomass boiler |
| CN110107884A (en) * | 2019-04-29 | 2019-08-09 | 航天科工哈尔滨风华有限公司电站设备分公司 | A kind of efficiently low NOXBurning zone fires device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |