CN208871843U - A kind of efficient resistive connection slag low emission biomass boiler - Google Patents
A kind of efficient resistive connection slag low emission biomass boiler Download PDFInfo
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- CN208871843U CN208871843U CN201821432494.0U CN201821432494U CN208871843U CN 208871843 U CN208871843 U CN 208871843U CN 201821432494 U CN201821432494 U CN 201821432494U CN 208871843 U CN208871843 U CN 208871843U
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- drum
- resistive connection
- low emission
- biomass boiler
- smoke box
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Abstract
The utility model belongs to boiler plant technical field and discloses a kind of efficient resistive connection slag low emission biomass boiler, including drum, side header, first side water wall tube, second side water wall tube, down-comer, convection tube, ground and platform staircase, the drum side is equipped with side header, the first side water wall tube and the second side water wall tube are equipped between the drum and side header, the drum side is equipped with multiple down-comers, convection tube is equipped between the down-comer and drum, the every side of drum is equipped with insulating layer furnace wall, the drum side is equipped with framework, the framework side is equipped with traveling-grate stoker, the drum side is equipped with front smoke box flue, the drum other side is equipped with rear smoke box, smoke box side is equipped with flue after described, smoke box is fixedly connected with flue after described, platform staircase is equipped at the top of the framework, the platform staircase Side is equipped with pipeline meter.This kind of efficient resistive connection slag biomass boiler, compact-sized, outer dimension is small, stable, the thermal efficiency is high.
Description
Technical field
The present invention relates to a kind of boilers, and in particular to a kind of efficient resistive connection slag low emission biomass boiler belongs to boiler skill
Art field.
Background technique
With coal facies ratio, biomass volatile matter content with higher.Volatile matter in agricultural crop straw generally 76%~
Between 86%, which stores the heats more than 2/3rds, and generally start to be precipitated at 200~300 DEG C.If at this time can not
Enough combustion airs are provided, then uncombusted volatile matter is taken out of by air-flow, forms black smoke, traditional coal-burning boiler design method
Agricultural crop straw is not suitable for operating instruction.
Content of ashes is high.Since the content of ashes in stalk biomass is usually higher, the ash content of granular fuel is heavy
Product speed generally substantially exceeds burning of coal, and some even exceeds coal about an order of magnitude.In addition, usually existing in dust stratification
The chlorides such as a large amount of K Cl, and the problem needed to pay attention to.
Slagging phenomenon is serious.In stalk growth course, can absorb contain certain content alkali metal element (including K,
Na, Cl, S, Ca, Si, P etc.), it is present in the impurity such as biomass internal body or ash content in the form of salt or oxide
(including K, Na, Cl, S, Ca, Si, P etc.).The temperature reached when the burning of stalk biomass solid molding fuel is significantly larger than
Ash fusion point temperature range causes the straw ash of furnace bottom to begin to soften at 800~900 DEG C, and grey branch is whole when the temperature is excessively high
Or part is melted, and causes fluxing power higher, experiments have shown that the fluxing power of corn stalk pellets fuel is 50% or more.This
The hot property of combustion apparatus is not only influenced, or even the safety of combustion apparatus can be jeopardized.
NOxDischarge amount is higher.The NO that biomass combustion equipment generatesxMainly generated by the N element oxidation in fuel,
Both it had come from gas-phase combustion or had come from fixed carbon combustion process.Other NOxIt may be under certain specified conditions by the N element in air
It is formed.The main NO of biomass combustion dischargexIt is NO, it can be changed into NO in an atmosphere2。
Summary of the invention
The technical problem to be solved in the present invention overcomes existing defect, provides a kind of efficient resistive connection slag low emission biomass pot
Furnace makes body refuse be not easy to deposit, drum high-temperature region energy by down-comer and convection tube convenient for eliminating the slough of boiler drum bottom
Well cooled down, prevent the bulge of drum lower part, while using water-fire pipe arrange, obtain augmentation of heat transfer effect, reach heating,
It boosts fast feature, improves the thermal efficiency of boiler, compact-sized, outer dimension is small, stable, the thermal efficiency is high, Ke Yiyou
Effect solves the problems in background technique.
Since biomass fuel is volatile, volatile matter is concentrated mainly below face arch, in order to postpone igniting, arch angle before increasing
Degree and height；Fire grate length is shortened, boiler body length is saved；And furnace height is properly increased, increase combustion space, is conducive to
The full combustion of volatile matter.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
To solve the above problems, the biomass efficient combustion apparatus of quasi- exploitation takes design scheme below:
(1) staged air distribution
Nitrogen is converted into NO (> 90%) and NO by a series of elementary processes in fuel2(< 10%), i.e. fuel
Type reaction mechanism.Important substantially nitrogenous object is NH3And HCN.However, can also find a large amount of NO and N in volatile matter2.Work as O2It fills
When sufficient, NH3With HCN NO can be converted by differential responses approach.And when fuel abundance, NO will be with NH3It reacts and generates with HCN
N2.This mechanism is used as denitration.It, will be maximum by optimization primary air excess coefficient, temperature and the residence time in furnace
Limit is by NH3N is converted into HCN2。
In primary zone, First air is supplied by primary air fan in fire grate bottom, and biomass is dry on fire grate, hot
Solution and fixed carbon final combustion.The main component of combustible gas is CO, H, CxHy、H2O and N2.It wherein, include NH in combustible gas3、
HCN and NO is beneficial for denitration.Further, since First air completely burned is supplied it is insufficient, the temperature of stoker surface compared with
It is low, to inhibit the appearance of slagging phenomenon.
On chimney arch top, Secondary Air is supplied by secondary air fan, and volatile matter generated with biomass pyrolytic etc. is in secondary combustion
It burns room and carries out mixed combining combustion, it is ensured that completely burned simultaneously reduces the pollutant generated by imperfect combustion.Using front and back arch to blowing
Mode, increase disturbance, combustible gas and secondary air mixture homogeneity can be effectively improved, the need to secondary air can be reduced
It asks, improves ignition temperature, reduce whole excess air coefficient.With the rising of temperature, fundamental reaction speed is accelerated, and improves combustion gas
Mixing --- also shorten the incorporation time of combustible gas and secondary air.Therefore, reduce the pollutant of imperfect combustion generation.
Finally, uncombusted ingredient is in combustion chamber after-flame three times.
(2) front and back arch design
For the features such as biomass fuel volatile matter is high, burning point is low, speed of ignition is fast, using face arch is increased, rear arch is shortened.
Both burner hearth dischargeable capacity had been expanded, it is ensured that fugitive constituent has sufficiently large space full combustion, ensures that fixed carbon in rear arch
There is certain burning time in area, to improve boiler combustion efficiency.
The present invention provides a kind of efficient resistive connection slag low emission biomass boiler, including drum, side header, the first side wall
Pipe, the second side water wall tube, down-comer, convection tube, ground and platform staircase, the drum side are equipped with side header, the pot
The first side water wall tube and the second side water wall tube are equipped between cylinder and side header, the drum side is equipped with multiple down-comers,
Convection tube is equipped between the down-comer and drum, the every side of drum is equipped with insulating layer furnace wall, and the drum side is equipped with
Framework, the framework side are equipped with traveling-grate stoker, and the drum side is equipped with front smoke box flue, after the drum other side is equipped with
Smoke box, the rear smoke box side are equipped with flue, and the rear smoke box is fixedly connected with flue, helps at the top of the framework equipped with platform
Ladder, platform staircase side are equipped with pipeline meter.
It is equipped with primary zone as a preferred technical solution of the present invention, in the drum and setting is once being fired
The secondary combustion chamber of room side is burnt, the secondary combustion chamber side is equipped with combustion chamber three times.
As a preferred technical solution of the present invention, side is equipped with face arch, the other side in the drum in the drum
Equipped with rear arch.
As a preferred technical solution of the present invention, drum side is equipped with overfiren air port, the Secondary Air
Mouth side is equipped with secondary air channel.
As a preferred technical solution of the present invention, the framework side is equipped with ground.
The beneficial effects obtained by the present invention are as follows being: a kind of efficient resistive connection slag low emission biomass boiler passes through primary combustion
Room, First air are supplied by primary air fan in fire grate bottom, biomass dry, pyrolysis and fixed carbon most after-burning on fire grate
It burns, while by secondary combustion chamber and overfiren air port and secondary air channel, being supplied by secondary air fan, generated with biomass pyrolytic
Volatile matter etc. carries out mixed combining combustion in secondary combustion chamber, it is ensured that completely burned simultaneously reduces the pollution generated by imperfect combustion
Object, while can be increased by uncombusted ingredient after-flame, then in such a way that face arch and rear arch are to blowing by combustion chamber three times
Disturbance, can effectively improve combustible gas and secondary air mixture homogeneity, can reduce the demand to secondary air, improve burning temperature
Degree reduces whole excess air coefficient.With the rising of temperature, fundamental reaction speed is accelerated, and improves combustion gas mixing --- also contract
The short incorporation time of combustible gas and secondary air reduces the pollutant of imperfect combustion generation, then by ground, is convenient for
Device is preferably fixed, structure is simple, easy to spread.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.
In the accompanying drawings:
Fig. 1 is a kind of efficient resistive connection slag low emission biomass boiler furnace structure schematic diagram described in the embodiment of the present invention；
Fig. 2 is a kind of efficient resistive connection slag low emission biomass boiler side sectional view described in the embodiment of the present invention；
Fig. 3 is a kind of efficient resistive connection slag low emission biomass boiler entirety structural schematic diagram described in the embodiment of the present invention；
Fig. 4 is a kind of efficient resistive connection slag low emission biomass boiler whole body side surface structural representation described in the embodiment of the present invention
Figure；
Fig. 5 is a kind of efficient resistive connection slag low emission biomass boiler texture edge inside signal described in the embodiment of the present invention
Figure；
Fig. 6 is that a kind of efficient resistive connection slag low emission biomass boiler entirety cross-sectional view structure described in the embodiment of the present invention is shown
It is intended to；
Figure label: 1, drum；2, side header；3, the first side water wall tube；4, the second side water wall tube；5, down-comer；
6, convection tube；7, face arch；8, secondary combustion chamber；9, primary zone；10, combustion chamber three times；11, rear arch；12, framework；13, chain
Fire grate；14, overfiren air port；15, ground；16, secondary air channel；17, pipeline meter；18, platform staircase；19, flue；20, after
Smoke box；21, front smoke box flue；22, insulating layer furnace wall.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Embodiment: Fig. 1-6, a kind of efficient resistive connection slag low emission biomass boiler of the present invention, including drum 1, side are please referred to
Header 2, the first side water wall tube 3, the second side water wall tube 4, down-comer 5, convection tube 6, ground 15 and platform staircase 18, it is described
1 side of drum is equipped with side header 2, and the first side water wall tube 3 and the second side wall are equipped between the drum 1 and side header 2
Pipe 4,1 side of drum are equipped with multiple down-comers 5, and convection tube 6, the drum 1 are equipped between the down-comer 5 and drum 1
Every side is equipped with insulating layer furnace wall 22, and 1 side of drum is equipped with framework 12, and 12 side of framework is equipped with traveling-grate stoker 13,
1 side of drum is equipped with front smoke box flue 21, and 1 other side of drum is equipped with rear smoke box 20, and rear 20 side of smoke box is set
There is flue 19, the rear smoke box 20 is fixedly connected with flue 19, platform staircase 18 is equipped at the top of the framework 12, the platform is helped
Terraced 18 sides are equipped with pipeline meter 17.
Primary zone 9 is equipped in the drum 1 and the secondary combustion chamber 8 of 9 side of primary zone, institute are set
It states 8 side of secondary combustion chamber and is equipped with combustion chamber 10 three times.Side is equipped with face arch 7, the other side in the drum 1 in the drum 1
Equipped with rear arch 11.1 side of drum is equipped with overfiren air port 14, and 14 side of overfiren air port is equipped with secondary air channel 16.
12 side of framework is equipped with ground 15.By primary zone 9, First air is supplied by primary air fan in fire grate bottom, raw
Substance dry, pyrolysis and fixed carbon final combustion on fire grate, while passing through secondary combustion chamber 8 and overfiren air port 14 and two
Secondary air hose 16, is supplied by secondary air fan, is mixed and is fired in secondary combustion chamber 8 with the volatile matter etc. that biomass pyrolytic generates
It burns, it is ensured that completely burned simultaneously reduces the pollutant generated by imperfect combustion, while passing through combustion chamber 10 three times can will be unburned
Most ingredient after-flame increases disturbance, can effectively improve combustible gas and two then in such a way that face arch 7 and rear arch 11 are to blowing
Grade air mixture homogeneity, can reduce the demand to secondary air, improve ignition temperature, reduce whole excess air coefficient, contracting
The short incorporation time of combustible gas and secondary air reduces the pollutant of imperfect combustion generation, and by ground 15, just
In device is preferably fixed.
It should be noted that the present invention is a kind of efficient resistive connection slag low emission biomass boiler in use, in primary combustion
Room 9, First air are supplied by primary air fan in fire grate bottom, biomass dry, pyrolysis and fixed carbon most after-burning on fire grate
It burns.The main component of combustible gas is CO, H2O and N2.It wherein, include NH in combustible gas3, HCN and NO be beneficial for denitration.
Further, since First air supplies deficiency for completely burned, the temperature of stoker surface is lower, to inhibit going out for slagging phenomenon
It is existing.On chimney arch top, Secondary Air is supplied by secondary air fan, and volatile matter generated with biomass pyrolytic etc. is in secondary combustion chamber 8
Carry out mixed combining combustion, it is ensured that completely burned simultaneously reduces the pollutant generated by imperfect combustion.It is right using face arch 7 and rear arch 11
The mode blown increases disturbance, can effectively improve combustible gas and secondary air mixture homogeneity, can reduce the need to secondary air
It asks, improves ignition temperature, reduce whole excess air coefficient.With the rising of temperature, fundamental reaction speed is accelerated, and improves combustion gas
Mixing --- also shorten the incorporation time of combustible gas and secondary air.Therefore, reduce the pollutant of imperfect combustion generation.
Finally, uncombusted ingredient is in 10 after-flame of combustion chamber three times.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (5)
1. a kind of efficient resistive connection slag low emission biomass boiler, including drum (1), side header (2), the first side water wall tube (3),
Second side water wall tube (4), down-comer (5), convection tube (6), ground (15) and platform staircase (18), which is characterized in that described
Drum (1) side is equipped with side header (2), equipped with the first side water wall tube (3) and the between the drum (1) and side header (2)
Two side water wall tubes (4), drum (1) side are equipped with multiple down-comers (5), set between the down-comer (5) and drum (1)
Having convection tube (6), the every side of the drum (1) is equipped with insulating layer furnace wall (22), and drum (1) side is equipped with framework (12),
Framework (12) side is equipped with traveling-grate stoker (13), and drum (1) side is equipped with front smoke box flue (21), the drum
(1) other side is equipped with rear smoke box (20), and rear smoke box (20) side is equipped with flue (19), the rear smoke box (20) and flue
(19) it is fixedly connected, is equipped with platform staircase (18) at the top of the framework (12), platform staircase (18) side is equipped with pipeline instrument
Table (17).
2. a kind of efficient resistive connection slag low emission biomass boiler according to claim 1, which is characterized in that the drum
(1) secondary combustion chamber (8) in equipped with primary zone (9) and setting in primary zone (9) side, the second-time burning
Room (8) side is equipped with combustion chamber (10) three times.
3. a kind of efficient resistive connection slag low emission biomass boiler according to claim 1, which is characterized in that the drum
(1) interior side is equipped with face arch (7), and the interior other side of the drum (1) is equipped with rear arch (11).
4. a kind of efficient resistive connection slag low emission biomass boiler according to claim 1, which is characterized in that the drum
(1) side is equipped with overfiren air port (14), and overfiren air port (14) side is equipped with secondary air channel (16).
5. a kind of efficient resistive connection slag low emission biomass boiler according to claim 1, which is characterized in that the framework
(12) bottom is equipped with ground (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821432494.0U CN208871843U (en) | 2018-09-01 | 2018-09-01 | A kind of efficient resistive connection slag low emission biomass boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821432494.0U CN208871843U (en) | 2018-09-01 | 2018-09-01 | A kind of efficient resistive connection slag low emission biomass boiler |
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| Publication Number | Publication Date |
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| CN208871843U true CN208871843U (en) | 2019-05-17 |
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| CN201821432494.0U Expired - Fee Related CN208871843U (en) | 2018-09-01 | 2018-09-01 | A kind of efficient resistive connection slag low emission biomass boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059265A (en) * | 2018-09-01 | 2018-12-21 | 农业部规划设计研究院 | A kind of efficient resistive connection slag low emission biomass boiler |
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2018
- 2018-09-01 CN CN201821432494.0U patent/CN208871843U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109059265A (en) * | 2018-09-01 | 2018-12-21 | 农业部规划设计研究院 | A kind of efficient resistive connection slag low emission biomass boiler |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190517 Termination date: 20190901 |