CN104344412B - Cinder breaking device for biomass boiler - Google Patents
Cinder breaking device for biomass boiler Download PDFInfo
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- CN104344412B CN104344412B CN201410216375.1A CN201410216375A CN104344412B CN 104344412 B CN104344412 B CN 104344412B CN 201410216375 A CN201410216375 A CN 201410216375A CN 104344412 B CN104344412 B CN 104344412B
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- biomass
- cinder
- breaking device
- dregs breaking
- boiler
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Abstract
The invention discloses a cinder breaking device for a biomass boiler, belongs to the technical field of solid fuel burning, is applied to biomass boilers for burning of biomass granular fuel, and actively breaks and burns clinker. The device is installed in the hearth of the biomass boiler, and comprises a water inlet pipe, a water outlet pipe, cinder breaking teeth and a cooling water pipe, is horizontally placed in the hearth of the biomass boiler, and is perpendicular to a chain fire grate; the distance between the device and the fire grate is smaller than 5 mm; burning fuel and cinder move with the movement of the chain fire grate; the burnt coked cinder is broken through the cinder breaking device and then discharged. The cinder breaking device solves the problem that the cinder of biomass granular fuel is coked after being burnt, can greatly improve the efficiency and prolong the service life of the biomass boiler, and facilities promotion of the industrialization effect of straw biomass granular fuel, the coal is replaced with biomass granular fuel, and the cinder breaking device has good economic, social and environmental benefits.
Description
Technical field
The present invention relates to a kind of biomass boiler dregs breaking device, belong to solid fuel ignition technical field it is adaptable to burn
The biomass boiler of biomass granule fuel, is specifically mounted in biomass boiler burner hearth, beneficial to the dress discharging combustion ashes
Put, for solve the problems, such as biomass granule fuel burning slagging scorification be difficult to discharge.
Background technology
Biomass granule fuel have efficient, clean, igniting easily, co2The advantages of approximate zero-emission, alternative coal etc.
Fossil fuel is applied to the industrial circle such as the civil areas such as cooking, heating and boiler combustion, generating.Biomass granule fuel density
For 1.0～1.4t/m3, energy resource density is equivalent to middle matter bituminous coal, and during use, persistently, fire box temperature is high, is current coal for firepower
Good alternative fuel, biomass granule fuel is cylindrical or block, and shape is consistent, has good mobility, it is easy to accomplish
The automatically controlling and automatic combustion of combustion apparatus.
In countries such as America and Europes, biomass granule fuel and supporting efficient burning equipment are popularized very much, but these lifes
Material grainses fuel, based on Wood pellets, has the advantages that calorific value is high, ash is low, is difficult slagging scorification after burning, and China
Biomass molding fuel based on agricultural crop straw, compared with Wood pellets, have in terms of physical characteristics, chemical constituent
Bigger difference, lead to combustion characteristics to have differences, the ash in stalk granular fuel is high, ash fusion point is low, alkali metal content
Higher, slagging scorification easily occurs, the problems such as dust stratification is serious in equipment in combustion process.Promote stalk biomass granular fuel in China
To alleviating energy-intensive situation, the environmental pollution that effective biomass material burning causes is significant.
Therefore, how to solve biomass boiler clogging problems, be the popularization and application of China's biomass granule fuel, replacement portion
Divide the technical guarantee of the Fossil fuel such as coal, oil, current biomass combustion equipment deslagging has various ways, such as spiral deslagging
System, chain-type dreg removing system etc..This dregs breaking device is applied to chain-type biomass boiler.
The problems such as biomass chain-grate boiler is for the easy scaling loss of fire grate and incomplete combustion has carried out optimization and the improvement of structure
(as the patent No.: 200710144970.9, applying date 2008.7.9), increases to household heating boiler to burning slagging scorification and dust stratification problem
Added spiral active slag-draining device (as the patent No.: zl201020188012.9,2011.1.5, the patent No.:
Zl201220243917.0,2012.10.10 etc.).
Content of the invention
The purpose of the present invention is to be to provide a kind of biomass boiler dregs breaking device, can be arranged on biomass boiler stove
In thorax, solve the problems, such as that biomass granule fuel burning slagging scorification is difficult to discharge.Meanwhile, present invention solution biomass granule fuel exists
In combustion heat chemical conversion process, because the contained alkali metal of fuel itself, suicide height lead to slagging scorification, impact boiler
Normal combustion, causes the low problem of heat loss efficiency of combustion.
Adopted the technical scheme that a kind of biomass boiler dregs breaking device by water inlet pipe, water outlet by reaching this purpose
Pipe, dregs breaking tooth and cooling water pipe composition, biomass boiler dregs breaking device is horizontally placed in biomass fuel boiler burner hearth, with chain furnace
Row is vertical, and distance chain fire grate is less than 5mm, and the fuel of burning and lime-ash, will through dregs breaking device with chain fire-gate motion
After burning, the lime-ash of coking is discharged after carrying out crushing.
A kind of above-mentioned biomass boiler dregs breaking device, dregs breaking tooth is uniformly distributed for multiple, and suit is welded on cooling water pipe
Outward, two break space widths should be less than 20mm, and lime-ash " lifting " makes lime-ash smoothly pass through from dregs breaking device, and effectively broken
The lime-ash of broken bulk coking, reduces the probability of slagging scorification in bulk after biomass granule fuel burning, is easy to slag and arranges from burner hearth
Go out.
A kind of above-mentioned biomass boiler dregs breaking device, dregs breaking tooth adopts tooth-shape structure, and that is, the dregs breaking tooth number of teeth is 3 or many
Individual it is ensured that the firm and life-span of dregs breaking device, profile of tooth is triangle salient pole or tetragon salient pole, and the facewidth is more than 20mm, effectively keeps away
Exempted from lime-ash be bonded on chain cause traveling-grate stoker damage.
A kind of above-mentioned biomass boiler dregs breaking device, cooling water pipe cavity diameter is not less than 20mm, and length is less than boiler
Chain fire-gate width, one end is connected with water inlet pipe, and the other end is connected with outlet pipe, interior logical cooling water, and water velocity is not less than
0.5m/s, effectively alleviates the destruction to bracing frame and dregs breaking tooth of the high temperature of biomass granule fuel combustion process, significantly
Improve the service life of dregs breaking device.
The present invention using the beneficial effect that above-mentioned technical solution can reach is: solves biomass granule fuel combustion
The problem that after burning, lime-ash coking cannot be cleared up, the inventive method increases dregs breaking device in biomass boiler, runs in traveling-grate stoker
In, the lime-ash of burning passes through dregs breaking device with the motion of fire grate, and the dregs breaking tooth on dregs breaking device " lifts " lime-ash, prevents lime-ash from tying
Jiao, on fire grate, efficiently solves the problems, such as that lime-ash cannot be discharged.Cooling water can effectively reduce the discharge temperature of lime-ash simultaneously,
Prevent lime-ash from moving after dregs breaking device again because of the mutual coking of hot mastication with fire grate.The present invention can greatly improve biology
Matter boiler service life, is conducive to promoting stalk biomass granular fuel industrialization effect, biomass granule fuel substitutes coal
Charcoal, has good economic, social and environmental benefit.
Brief description:
Fig. 1 is biomass fire grate structure for boiler schematic diagram；
Fig. 2 is biomass boiler dregs breaking device schematic diagram；
Fig. 3 is dregs breaking tooth distribution schematic diagram；
Fig. 4 is the dregs breaking tooth of two kinds of different structures.
Specific embodiment:
Below in conjunction with the accompanying drawings embodiments of the invention are described:
As shown in Figure 1,2,3, 4: 1 is charging aperture, 2 is biomass granule fuel, and 3 is dregs breaking device, and 3a is water inlet pipe, 3b
For outlet pipe, 3c be dregs breaking tooth, 3d be cooling water pipe, 4 be traveling-grate stoker, 5 be boiler casing.
A kind of present invention biomass boiler dregs breaking device, is arranged in biomass boiler burner hearth, can effectively solve the problem that biology
The problem that the burning slagging scorification of matter granular fuel is difficult to discharge.Meanwhile, effectively solving biomass granule fuel is in burning thermochemical study
During, because the contained alkali metal of fuel itself, suicide height lead to slagging scorification, the normal combustion of impact boiler, cause
The low problem of heat loss efficiency of combustion.
Biomass granule fuel 2 along charging aperture 1 enter biomass boiler along burn, and the motion with traveling-grate stoker 4 and
Mobile burning, after biomass granule fuel burning a period of time, in lime-ash state under chain fire-gate motion acts on, by broken
Slag device 3, after the effect of dregs breaking tooth 3c is by burning, the lime-ash of coking is discharged after crushing.
Dregs breaking tooth 3c is uniformly distributed for multiple, and suit is welded on outside cooling water pipe 3d, and two break space widths should be less than
20mm, effectively prevent lime-ash and is bonded on chain and cause traveling-grate stoker 4 to damage, and alleviates biomass granule fuel 2 high simultaneously
The probability of slagging scorification in bulk after temperature burning, is easy to slag and discharges from burner hearth, meanwhile, after dregs breaking tooth 3c lost efficacy, dismountable inefficacy
Dregs breaking tooth, welds new dregs breaking tooth again.
Pass through dregs breaking device 3 for ease of lime-ash, dregs breaking tooth 3c adopts tooth-shape structure, that is, the dregs breaking tooth 3c number of teeth is 3 or many
Individual, that is, ensure the firm of dregs breaking device 3 and life-span, and do not make lime-ash accumulated plugging, reach the purpose of broken lime-ash, profile of tooth is three
Angular salient pole or tetragon salient pole, the facewidth be more than 20mm, effectively prevent lime-ash be bonded on chain cause traveling-grate stoker damage.
Cooling water pipe 3d cavity diameter is not less than 20mm, and length is less than width, one end and the water inlet pipe of boiler chain grate 4
3a is connected, and the other end is connected with outlet pipe 3b, interior logical cooling water, and water velocity is not less than 0.5m/s, can substantially reduce break dress
The temperature put, effectively alleviates the destruction to dregs breaking tooth 3c of the high temperature of biomass granule fuel combustion process, greatly improves
The service life of dregs breaking device 3.
It is as follows that the present invention combines marginal data:
Embodiment 1: for the biomass boiler dregs breaking device of corn stalk pelletses fuel
Grain density 1.2g/cm of corn stalk pelletses fuel3, content of ashes more a height of 18.45%, low heat valve
13.01mj/kg, 1167 DEG C of softening temperature, contains higher si element and otheralkali metal element, si content in lime-ash
28%, k constituent content is 9%.
Corn stalk pelletses fuel is placed in and is no burnt in the biomass boiler of dregs breaking device, after burning slagging scorification is more
Seriously, bottom ash fluxing power is 48.94%, and clinker is big, more strong, clinker full-size 82.5mm, observes and has on grate chain
The lime-ash of a small amount of coking is bonded on fire grate；Corn stalk pelletses fuel is placed in the biomass equipped with dregs breaking device of the present invention
Burn in boiler, after burning, find that lime-ash is in little bulk, clinker full-size 17.3mm, observe and only retain on a small quantity on grate chain
Ash, illustrates that this biomass boiler dregs breaking device can not only play the effect of broken lime-ash, and is prevented from lime-ash in chain
The bonding of fire grate, embodiment break, scarfing cinder effect are obvious.
Embodiment 2: for the biomass boiler dregs breaking device of the corn stalk pelletses fuel containing additive
Corn stalk pelletses fuel containing additive is placed in and is no burnt in the biomass boiler of dregs breaking device, burning
Slagging scorification is more serious afterwards, and bottom ash fluxing power is 26.17%, and clinker is big, and hardness is than the stalk granular fuel clinker without additive
Little, clinker full-size 32.5mm, observe the lime-ash having a small amount of coking on grate chain and be bonded on fire grate；By containing additive
Corn stalk pelletses fuel is placed in the biomass boiler equipped with dregs breaking device of the present invention and burns, and finds lime-ash clinker after burning
Size diminishes, clinker full-size 15.2mm, observes and only retains a small amount of ash on grate chain, illustrates that this biomass boiler break fills
Put the effect that can not only play broken lime-ash, and be prevented from lime-ash in chain fire-gate bonding, embodiment break, clear
Slag effect is more obvious.
Embodiment 3: for the biomass boiler dregs breaking device of Wood pellets
Wood pellets grain density 1.18g/cm3, content of ashes more a height of 1.01%, low heat valve 16.83mj/
Kg, 1332 DEG C of softening temperature, si content 10% in lime-ash, k constituent content is 4%.
Wood pellets are placed in and are no burnt in the biomass boiler of dregs breaking device, after burning, slagging scorification is not serious,
Bottom ash fluxing power is 0, observes and only has a small amount of ash component on grate chain；By Wood pellets be placed in the present invention equipped with break
Burn in the biomass boiler of device, basically identical with the biomass boiler phenomenon of no dregs breaking device after burning, embodiment breaks
Slag, scarfing cinder DeGrain, illustrate the Wood pellets low for ash, can not increase biomass boiler dregs breaking device.
A kind of biomass boiler dregs breaking device of the present invention is applied to the biomass boiler of traveling-grate stoker pattern, simultaneously also suitable
Biomass boiler for reciprocating fire grate pattern.
Finally it should be noted that above example is only in order to illustrate technical scheme and unrestricted, although reference
Preferred embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the present invention's
Technical scheme is modified or equivalent, and without deviating from the spirit and scope of technical solution of the present invention, it all should be covered
In the middle of scope of the presently claimed invention.
Claims (2)
1. a kind of biomass boiler dregs breaking device is it is characterised in that include water inlet pipe (3a), outlet pipe (3b), dregs breaking tooth (3c)
With cooling water pipe (3d), described cooling water pipe (3d) is horizontally placed in biomass fuel boiler burner hearth, hangs down with traveling-grate stoker (4)
Directly, distance chain fire grate (4) is less than 5mm, the fuel of burning and lime-ash with the motion of traveling-grate stoker (4), through dregs breaking device
(3) discharge after carrying out crushing by the lime-ash of coking after burning；Dregs breaking tooth (3c) is uniformly distributed for multiple, and suit is welded on cooling water
Outward, two break space widths should be less than 20mm to pipe (3d)；Dregs breaking tooth (3c) adopts tooth-shape structure, and that is, dregs breaking tooth (3c) number of teeth is many
Individual, profile of tooth is triangle salient pole or tetragon salient pole, and the facewidth is more than 20mm.
2. a kind of biomass boiler dregs breaking device according to claim 1 is it is characterised in that cooling water pipe (3d) cavity is straight
Footpath is not less than 20mm, and length is less than the width of boiler chain grate (4), and one end is connected with water inlet pipe (3a), the other end and water outlet
Pipe (3b) is connected, interior logical cooling water, and water velocity is not less than 0.5m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410216375.1A CN104344412B (en) | 2014-05-16 | 2014-05-16 | Cinder breaking device for biomass boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410216375.1A CN104344412B (en) | 2014-05-16 | 2014-05-16 | Cinder breaking device for biomass boiler |
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| Publication Number | Publication Date |
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| CN104344412A CN104344412A (en) | 2015-02-11 |
| CN104344412B true CN104344412B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410216375.1A Expired - Fee Related CN104344412B (en) | 2014-05-16 | 2014-05-16 | Cinder breaking device for biomass boiler |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918036B (en) * | 2017-03-22 | 2018-10-26 | 山东理工大学 | The fuel of biomass molding fuel burning device disturbs and broken integrated mechanism |
| CN106918039B (en) * | 2017-03-22 | 2018-10-26 | 山东理工大学 | A kind of biomass molding fuel solid-phase low-temperature, gas phase high-temp combustion device |
| CN106949460B (en) * | 2017-03-22 | 2018-10-26 | 山东理工大学 | A kind of burner of biomass molding fuel solid-phase low-temperature, gas phase high-temp combustion |
| CN108716686B (en) * | 2018-04-23 | 2020-06-12 | 湖北和泰生物能源有限公司 | Biomass boiler slag breaking device |
| CN108692321B (en) * | 2018-04-23 | 2020-06-12 | 湖北和泰生物能源有限公司 | Novel biomass boiler slag breaking device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034257A (en) * | 1988-12-20 | 1989-07-26 | 杨红斌 | Chain-frame type furnace grate with square piston for wide variety of coal |
| CN2061250U (en) * | 1989-04-18 | 1990-08-29 | 孔德淳 | Rotating roller clinker pusher |
| DE4220265C1 (en) * | 1992-06-20 | 1993-05-06 | Deutsche Tiefbohr-Aktiengesellschaft, 4444 Bad Bentheim, De | Prodn. of gasification material in sloping bed reactor |
| CN2163950Y (en) * | 1993-07-01 | 1994-05-04 | 陈玉鑫 | Coal forced burning device for chain-conveyer furnace |
| CN2254993Y (en) * | 1996-04-10 | 1997-05-28 | 北京锅炉研究所 | Walking type laminated combustion apparatus with automatic rotation slag obstruction means |
| CN2453238Y (en) * | 2000-12-06 | 2001-10-10 | 杨汉平 | Combustion-promoting burner for boiler |
| CN2562075Y (en) * | 2002-08-22 | 2003-07-23 | 南通市第四建筑安装工程有限公司工业设备安装一处 | Burner of chain furnaces |
| CN102580832A (en) * | 2012-02-03 | 2012-07-18 | 山东电力研究院 | Isolating and slag crushing device applicable to dry slag extractor and method for same |
-
2014
- 2014-05-16 CN CN201410216375.1A patent/CN104344412B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034257A (en) * | 1988-12-20 | 1989-07-26 | 杨红斌 | Chain-frame type furnace grate with square piston for wide variety of coal |
| CN2061250U (en) * | 1989-04-18 | 1990-08-29 | 孔德淳 | Rotating roller clinker pusher |
| DE4220265C1 (en) * | 1992-06-20 | 1993-05-06 | Deutsche Tiefbohr-Aktiengesellschaft, 4444 Bad Bentheim, De | Prodn. of gasification material in sloping bed reactor |
| CN2163950Y (en) * | 1993-07-01 | 1994-05-04 | 陈玉鑫 | Coal forced burning device for chain-conveyer furnace |
| CN2254993Y (en) * | 1996-04-10 | 1997-05-28 | 北京锅炉研究所 | Walking type laminated combustion apparatus with automatic rotation slag obstruction means |
| CN2453238Y (en) * | 2000-12-06 | 2001-10-10 | 杨汉平 | Combustion-promoting burner for boiler |
| CN2562075Y (en) * | 2002-08-22 | 2003-07-23 | 南通市第四建筑安装工程有限公司工业设备安装一处 | Burner of chain furnaces |
| CN102580832A (en) * | 2012-02-03 | 2012-07-18 | 山东电力研究院 | Isolating and slag crushing device applicable to dry slag extractor and method for same |
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| CN104344412A (en) | 2015-02-11 |
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