CN202361361U - Liquid deslagging biomass combustion device - Google Patents
Liquid deslagging biomass combustion device Download PDFInfo
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- CN202361361U CN202361361U CN2011204978829U CN201120497882U CN202361361U CN 202361361 U CN202361361 U CN 202361361U CN 2011204978829 U CN2011204978829 U CN 2011204978829U CN 201120497882 U CN201120497882 U CN 201120497882U CN 202361361 U CN202361361 U CN 202361361U
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- combustion chamber
- slag
- biomass combustion
- biomass
- combustion
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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
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Abstract
The utility model discloses a liquid deslagging biomass combustion device, and belongs to the technical field of biomass combustion. The liquid deslagging biomass combustion device comprises a biomass combustion furnace, an afterheat boiler and a tail flue, wherein secondary air openings are horizontally and slantways formed on the upper part of a combustion chamber of the biomass combustion furnace; a row of slag catching pipes is arranged at a smoke outlet at the bottom of the combustion chamber; slag stopping brims are arranged on the tops of the slag catching pipes, so that slag can be caught effectively; and the slag stopping brims are formed by bending and stretching so as to enable the row of pipes to be arranged at large intervals on a water cooling wall of a hearth of the afterheat boiler or a water cooling wall of the combustion chamber. The liquid deslagging biomass combustion device has a simple structure and can fully combust discharged liquid slag by using biomasses; smoke is clean; and the problems of ash gathering, coking, corrosion and the like in the boiler caused by a low smelting point of the biomasses are solved.
Description
Technical field
The utility model relates to a kind of biomass combustion equipment, belongs to the biomass combustion technical field.
Background technology
Along with fossil energy in the world wide constantly reduces and domestic oil price, coal price constantly soaring, China calls and taps a new source of energy present stage energetically, is faced with huge CO simultaneously
2Emission reduction tasks.Biomass energy has huge advantage in these areas, and China's biomass resource is abundant, and annual production is about about 1,000,000,000 tons, and always amount to standard coal and can reach 500,000,000 tons, and biomass combustion CO
2Be near-zero release, the SO that is produced
xAnd NO
xAlso seldom, thereby have a wide range of applications.
Yet in the living beings because of being rich in elements such as K, Na, Cl; Formed lime-ash ash fusion point is lower behind the biomass combustion, generally between 950-1100 ℃, very easily melts and coking on bonding or fluidized bed air distribution plate on the heating surface in the combustion process; Have a strong impact on the normal operation of boiler plant; Significantly reduce the heat-transfer effect of boiler, and the chlorine corrosion phenomenon is serious, these problems are restricting the development of biomass combustion always for a long time.
To above problem; Industry is being inquired into always; Many people attempt the scheme and the technology of seeking to solve from the direction that improves the living beings ash fusion point; Like the disclosed a kind of biomass solid forming fuel additive of Chinese patent CN101550374A, sought several kinds of different formulations that improve living beings ash fusion point additive, this additive is by Al
2O
3, Fe
2O
3Form with kaolin, but the scheme that this patent disclosed has increased the making difficulty and the use cost of biomass molding fuel greatly, large-scale application is still waiting technological break-through.
The utility model content
The utility model to present stage living beings be rich in chlorine and alkali metal and the ash fusion point that causes is low, corrosion and coking problem; A kind of slag tap biomass combustion device is proposed; Living beings lime-ash fusing in the combustion process, realization slag tap; The dust contained flue gas rate that gets into outside burner hearth is low, efficiently solves problems such as heated surface corrosion and slagging scorification.
The technical scheme of the utility model is: a kind of slag tap biomass combustion device; Contain biomass combustion stove and charging gear, it is characterized in that: said biomass combustion stove comprises charging aperture, combustion chamber, remittance grit chamber, gas fume of combustion chamber outlet, furnace wall and overfiren air port; The contraction section of lower end, said combustion chamber is for converging the grit chamber, and remittance bottom, grit chamber is provided with the granulation water tank; Said charging aperture is positioned at the top of combustion chamber; Said overfiren air port is positioned on the furnace wall on top, combustion chamber; Said gas fume of combustion chamber outlet is positioned at the bottom, combustion chamber and converges the junction of grit chamber; The gas fume of combustion chamber exit is provided with row's screen tube, and the top of screen tube is provided with the pushing off the slag eaves; This biomass combustion device also comprises waste heat boiler and back-end ductwork; Said waste heat boiler is connected with the gas fume of combustion chamber outlet through horizontal flue; In waste heat boiler, be furnished with furnace wall cooling, be hung with superheater in the burner hearth of waste heat boiler, the bottom of waste heat boiler is provided with sealing radiator; Air preheater outlet in the said back-end ductwork is connected through pipeline with overfiren air port, and back-end ductwork is provided with air-introduced machine outward.
Another technical characterictic of the utility model is: said screen tube is to be extended to have loose bowels by the pipe row bending of the furnace wall cooling of waste heat boiler to form.If the inwall of combustion chamber is provided with the combustion chamber water-cooling wall, screen tube is then had loose bowels by the combustion chamber water-cooling wall and is formed.
The another technical characterictic of the utility model is: said overfiren air port is the air port of four annular spread, and is the horizontal tilt layout, and tilt angle alpha is 30-60 °.Said pushing off the slag eaves is to be made up of symmetric arrangement and two downward-sloping eaves, and the angle β of two eaves and horizontal plane is 5-15 °, and welding-on is on the inwall of combustion chamber; Pushing off the slag eaves span H is greater than the width L of gas fume of combustion chamber outlet.
In the technique scheme, said superheater is formed by cold screen of vapour or coiled pipe, is furnished with soot blower between screen.Said charging gear is the piston material pushing device.
The utility model has the advantages that: 1. ignition temperature is high; Biomass combustion is realized slag tap smoothly; Ponder a problem thereby avoided leaving for from the direction that improves the living beings ash fusion point; Most of liquid slag become trapped in granulation water tank and sealing radiator, has reduced the flue gas slag-containing rate, and the lime-ash that captures is convenient to second use; 2. the melt cinder shunting that the pushing off the slag eaves of arranging on the outlet of the gas fume of combustion chamber of biomass combustion stove effectively will drop down down; Avoided too much carrying of combustor exit flue gas; Add the capture effect of row's screen tube of upper smoke outlet; Make low, the cleaning of flue gas of dust contained flue gas rate in the entering waste heat boiler, thereby solved the problems such as dust stratification, slagging scorification and corrosion on waste heat boiler and the back-end ductwork internal heating surface largely; 3. whole flow of flue gas is driven by the tail flue gas air-introduced machine, is negative pressure state in biomass combustion stove and the waste heat boiler, and operation is on-the-spot clean, and security of operation is wind one time with the charging leaked-in air; 4. fuel used is living beings bulk cargo bag, and the fuel preliminary treatment is simple, and packing and cost of transportation are lower, and charging gear is the piston type material-pulling device, and feed is simple.
Description of drawings
Fig. 1 is the structural representation schematic diagram of the slag tap biomass combustion device that provides of the utility model.
Fig. 2 is the A-A cutaway view of Fig. 1, has expressed slag tap biomass combustion device overfiren air port structures arranged.
Fig. 3 is the partial sectional view of gas fume of combustion chamber outlet and pushing off the slag eaves.
Among the figure: 1-biomass combustion stove; The 2-combustion chamber; 3-converges the grit chamber; The outlet of 4-gas fume of combustion chamber; 5-granulation water tank; The 6-furnace wall; 7-pushing off the slag eaves; The 8-overfiren air port; 9-piston material pushing device; The 10-screen tube; The 11-charging aperture; The 12-waste heat boiler; The 13-horizontal flue; The 14-furnace wall cooling; The 15-sealing radiator; The 16-superheater; The 17-back-end ductwork; The 18-air-introduced machine.
The specific embodiment
Further specify principle, concrete structure and the preferred forms of the utility model below in conjunction with accompanying drawing.
Fig. 1 is the structural representation schematic diagram of the slag tap biomass combustion device that provides of the utility model; This device contains biomass combustion stove 1 and charging gear, and biomass combustion stove 1 comprises charging aperture 11, combustion chamber 2, remittance grit chamber 3, gas fume of combustion chamber outlet 4, furnace wall 6 and overfiren air port 8; The contraction section of 2 lower ends, combustion chamber is for converging grit chamber 3, and remittance 3 bottoms, grit chamber are provided with granulation water tank 5, is used to collect the liquid slag of dropping down from remittance grit chamber 3; Charging aperture 11 is positioned at the top of combustion chamber 2; Overfiren air port 8 is positioned on the furnace wall on 2 tops, combustion chamber; Gas fume of combustion chamber outlet 4 is positioned at 2 bottoms, combustion chamber and converges the junction of grit chamber 3; Gas fume of combustion chamber exports 4 places and is provided with row's screen tube 10; Be used to capture the slag that the outlet flue gas carries; The purge outlet flue gas, combustion chamber 2 can be designed to adiabatic space, the interior heating surfaces such as water-cooling wall of not arranging; Under this embodiment, the pipe of the furnace wall cooling 14 of the waste heat boiler 12 that screen tube 10 is row bending extension is had loose bowels and is formed; Also can be furnished with water wall surface in the combustion chamber 2, under this embodiment, 10 combustion chamber water-cooling walls by biomass combustion stove 1 of screen tube are had loose bowels and are formed; The top of screen tube 10 is provided with pushing off the slag eaves 7; Charging gear is a piston material pushing device 9, is used for living beings bulk cargo bag in charging aperture 1 is sent into combustion chamber 2; This biomass combustion device also comprises waste heat boiler 12 and back-end ductwork 17; Waste heat boiler 12 is connected with gas fume of combustion chamber outlet 4 through horizontal flue 13, in waste heat boiler 12, is furnished with furnace wall cooling 14, is hung with superheater 16 in the burner hearth of waste heat boiler 12; Superheater 16 is formed by cold screen of vapour or coiled pipe; Apart from broad and be furnished with soot blower, be used for intermittently superheater 16 being blown ash and cleaning between two screens, flue gas is through the heat exchange of furnace wall cooling 14 and superheater 16; The flue-gas temperature that gets into back-end ductwork 17 has only about 500 ℃, has effectively avoided the slagging scorification and the corrosion of back-end ductwork 17 internal heating surfaces; The bottom of waste heat boiler 12 is provided with sealing radiator 15, be used to collect in the burner hearth 12 flue gases through physical separation with blow the lime-ash that ash falls; Air preheaters outlet in the back-end ductwork 17 and overfiren air port 8 are connected through pipeline; Secondary wind is sent in the combustion chamber 2 through overfiren air port 8 after the air preheater preheating; The back-end ductwork 17 outer air-introduced machines 18 that are provided with; The flow of flue gas of whole cooker furnace apparatus provides power by the swabbing action of air-introduced machine 18, has formed the negative pressure operation in the stove.
Fig. 2 has expressed slag tap biomass combustion device overfiren air port structures arranged; Overfiren air port 8 can be arranged a plurality of, generally adopts the air port of four annular spread, and is the horizontal tilt layout; Tilt angle alpha is 30-60 °; Can in the combustion chamber, form the tangential swirl burning, make sufficient combustion, the burning indoor temperature raises rapidly and maintains about 1300 ℃.
As shown in Figure 3, pushing off the slag eaves 7 is to be made up of symmetric arrangement and two downward-sloping eaves, and inclination angle beta is 5-15 °, and welding-on is on the inwall of combustion chamber 2; The span H of pushing off the slag eaves is greater than the width L of gas fume of combustion chamber outlet 4.
In order to the molten slag shunting that will gutter down along inwall, walk around gas fume of combustion chamber outlet 4 and get into and converge grit chamber 3, avoid flow through gas fume of combustion chamber outlet 4 and carried of slag by smoke evacuation; Two eaves inclination angle beta of pushing off the slag eaves 11 are 5-15 °; The slag that guarantees shunting can drop down from both sides smoothly, and pushing off the slag eaves 11 span H mainly are that the slag that guarantees shunting gets around gas fume of combustion chamber outlet 4 fully greater than the width L of gas fume of combustion chamber outlet 4.
The operation principle of the utility model: during use; The biomass fuel bag is constantly sent in the combustion chamber 2 of biomass combustion stove 1 by piston material pushing device 9 through charging aperture 11; The swabbing action of tail flue gas air-introduced machine 18 makes in biomass combustion stove 1 and the waste heat boiler 12 and is negative pressure state; Charging aperture 1 constantly has air to bleed, and is used for burning.The secondary wind air is preheating to 150-400 ℃ by air preheater in the back-end ductwork 17 of waste heat boiler 12; Overfiren air port 8 eddy flows through 2 tops, combustion chamber are sent in the combustion chamber 2; 2 excess air coefficients reach 1.0～1.2 in the combustion chamber, and biomass fuel is forming swirl flow combustion in combustion chamber 2 under the drive of swirl secondary air, and ignition temperature is 1200～1400 ℃; The living beings lime-ash promptly melts, and forms molten slag.Molten slag is flowed by eddy flow and gets rid of to combustion chamber 2 inwalls, flows into granulation water tank 5 and is captured down.The flue gas that is produced exports 4 discharge combustion chambers 2 through gas fume of combustion chamber; Pushing off the slag eaves 7 will 2 inwalls flow down along the combustion chamber the slag shunting walk around gas fume of combustion chamber outlet 4; Avoid exporting too much carrying of flue gas, constantly capture and screen tube 10 will export the slag that carries in the flue gas.Flue gas gets in the waste heat boiler 12 and carries out heat exchange with furnace wall cooling and pendant superheater 16, and the flue gas that gets into back-end ductwork 17 is reduced to 480-520 ℃.Superheater 16 is equipped with the selective sootblowing device, in waste heat boiler 12 burner hearths by physical separation with blow the lime-ash that ash falls and fall in the sealing radiator 15.The flue gas that temperature is lower and slag-containing rate is very low gets into back-end ductwork 17, has effectively avoided dust stratification, coking and the corrosion etc. of convection heating surface in the back-end ductwork 17.Flue gas is reduced to 120-150 ℃ through air-introduced machine 18 discharges in back-end ductwork 17 with after the convection heating surface heat exchange.
The utility model is simple in structure, and is easy to operate, and efficiency of combustion is high, to the lower biomass fuel combustion of ash fusion point, has reasonably solved difficult problems such as its coking and corrosion.
Claims (7)
1. slag tap biomass combustion device; Contain biomass combustion stove (1) and charging gear, it is characterized in that: said biomass combustion stove (1) comprises charging aperture (11), combustion chamber (2), remittance grit chamber (3), gas fume of combustion chamber outlet (4), furnace wall (6) and overfiren air port (8); The contraction section of lower end, combustion chamber (2) is for converging grit chamber (3), and remittance bottom, grit chamber (3) is provided with granulation water tank (5); Charging aperture (11) is positioned at the top of combustion chamber (2); Said overfiren air port (8) is positioned on the furnace wall on top, combustion chamber (2); Gas fume of combustion chamber outlet (4) is positioned at bottom, combustion chamber (2) and converges the junction of grit chamber (3); Gas fume of combustion chamber outlet (4) locates to be provided with row's screen tube (10), and the top of screen tube (10) is provided with pushing off the slag eaves (7); This biomass combustion device also comprises waste heat boiler (12) and back-end ductwork (17); Said waste heat boiler (12) is connected with gas fume of combustion chamber outlet (4) through horizontal flue (13); In waste heat boiler (12), be furnished with furnace wall cooling (14); Be hung with superheater (16) in the burner hearth of waste heat boiler (12), the bottom of waste heat boiler (12) is provided with sealing radiator (15); Air preheater outlet in the said back-end ductwork (17) is connected through pipeline with overfiren air port (8), the outer air-introduced machine (18) that is provided with of back-end ductwork (17).
2. a kind of slag tap biomass combustion device according to claim 1 is characterized in that: said screen tube (10) is to be extended to have loose bowels by the pipe row bending of the furnace wall cooling (14) of waste heat boiler (12) to form.
3. a kind of slag tap biomass combustion device according to claim 1, it is characterized in that: the inwall of said combustion chamber (2) is provided with the combustion chamber water-cooling wall, and said screen tube (10) is had loose bowels by the combustion chamber water-cooling wall of biomass combustion stove (1) and is formed.
4. according to claim 1,2 or 3 described a kind of slag tap biomass combustion devices, it is characterized in that: said overfiren air port (8) is the air port of four annular spread, and is the horizontal tilt layout, and tilt angle alpha is 30-60 °.
5. a kind of slag tap biomass combustion device according to claim 4 is characterized in that: said pushing off the slag eaves (7) is to be made up of symmetric arrangement and two downward-sloping eaves, and inclination angle beta is 5-15 °, and welding-on is on the inwall of combustion chamber (2); Pushing off the slag eaves (7) span H is greater than the width L of gas fume of combustion chamber outlet (4).
6. a kind of slag tap biomass combustion device according to claim 1, it is characterized in that: said superheater (16) is formed by cold screen of vapour or coiled pipe, is furnished with soot blower between screen.
7. a kind of slag tap biomass combustion device according to claim 1 is characterized in that: said charging gear is piston material pushing device (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204978829U CN202361361U (en) | 2011-12-02 | 2011-12-02 | Liquid deslagging biomass combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204978829U CN202361361U (en) | 2011-12-02 | 2011-12-02 | Liquid deslagging biomass combustion device |
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| Publication Number | Publication Date |
|---|---|
| CN202361361U true CN202361361U (en) | 2012-08-01 |
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ID=46572545
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204978829U Expired - Fee Related CN202361361U (en) | 2011-12-02 | 2011-12-02 | Liquid deslagging biomass combustion device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425787A (en) * | 2011-12-02 | 2012-04-25 | 沈阳汇丰生物能源发展有限公司 | Liquid slag trapping biomass combustion device and method |
| CN106895384A (en) * | 2017-04-01 | 2017-06-27 | 安徽科达洁能股份有限公司 | Residual neat recovering system |
| CN109404895A (en) * | 2018-12-13 | 2019-03-01 | 武汉挚裕技术有限公司 | A kind of biomass fluid bed boiler plant of top feed |
| CN111351028A (en) * | 2020-03-25 | 2020-06-30 | 济南黄台煤气炉有限公司 | Cyclone airflow field combustion chamber |
-
2011
- 2011-12-02 CN CN2011204978829U patent/CN202361361U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425787A (en) * | 2011-12-02 | 2012-04-25 | 沈阳汇丰生物能源发展有限公司 | Liquid slag trapping biomass combustion device and method |
| CN102425787B (en) * | 2011-12-02 | 2014-05-07 | 沈阳汇丰生物能源发展有限公司 | Liquid slag trapping biomass combustion device and method |
| CN106895384A (en) * | 2017-04-01 | 2017-06-27 | 安徽科达洁能股份有限公司 | Residual neat recovering system |
| CN109404895A (en) * | 2018-12-13 | 2019-03-01 | 武汉挚裕技术有限公司 | A kind of biomass fluid bed boiler plant of top feed |
| CN111351028A (en) * | 2020-03-25 | 2020-06-30 | 济南黄台煤气炉有限公司 | Cyclone airflow field combustion chamber |
| CN111351028B (en) * | 2020-03-25 | 2021-11-09 | 济南黄台煤气炉有限公司 | Cyclone airflow field combustion chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20171202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |