CN205002372U - Direct burming biomass hot -blast furnace of long -range feeding - Google Patents

Direct burming biomass hot -blast furnace of long -range feeding Download PDF

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Publication number
CN205002372U
CN205002372U CN201520637813.1U CN201520637813U CN205002372U CN 205002372 U CN205002372 U CN 205002372U CN 201520637813 U CN201520637813 U CN 201520637813U CN 205002372 U CN205002372 U CN 205002372U
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China
Prior art keywords
air
hot
communicated
blast
burner hearth
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Expired - Fee Related
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CN201520637813.1U
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Chinese (zh)
Inventor
张兆群
石春梅
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LIAONING PRECISION CHEMICAL TECHNOLOGY Co Ltd
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LIAONING PRECISION CHEMICAL TECHNOLOGY Co Ltd
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Priority to CN201520637813.1U priority Critical patent/CN205002372U/en
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Abstract

The utility model relates to a hot -blast furnace, specifically speaking are direct burming biomass hot -blast furnace of long -range feeding. Including air distribution system, furnace, injection combustion chamber, flue gas chamber, conveying pipeline line and feeding system, wherein furnace's top is equipped with flue gas chamber, be equipped with the injection combustion chamber with furnace and flue gas chamber intercommunication in the flue gas chamber, the last high temperature exhanst gas outlet that is equipped with of flue gas chamber, be equipped with the feed inlet on furnace's the side furnace body, the feed inlet passes through conveying pipeline line and feeding system intercommunication, air distribution system communicates with furnace and injection combustion chamber, is furnace and sprays combustion chamber air distribution oxygen suppliment. The utility model has the characteristics of area is little, installation convenient operation, and is hot -blast clean, the stable performance, and especially because hot -blast direct heated air, the cold and hot gaseous difference in temperature is big, and logarithmic mean temperature difference DELTA tm when greatly improving cold and hot medium heat exchange, the general heat exchange mode of thermal efficiency ratio improve etc. By a wide margin.

Description

A kind of direct biomass burning hot-blast stove of long-range charging
Technical field
The utility model relates to hot-blast stove, the direct biomass burning hot-blast stove of specifically a kind of long-range charging.
Background technology
As everyone knows, biomass fuel has recyclability, low stain, and the clean discharge capacity of sulfur dioxide is similar to zero, effectively can alleviate atmosphere pollution.Therefore, biomass burning hot-blast stove replaces coal-fired hot-blast stove in recent years gradually.But biomass fuel (rice husk) and coal are having very large difference in nature: about the calorific capacity of such as per kilogram rice husk is the half of standard coal, the volume sending rice husk needed for same heat be the 10-12 of coal doubly; In burning velocity, rice husk is inflammable and burning-point is low, and its volatile combustion speed is 2.3 times of coal.According to these characteristics, the rice husk entering hot-blast stove just needs enough volumes and ventilation, draw, air blast supply air quantity must with rice husk comprehensive engagement, rice husk is made to be in fluidisation and close to suspended state, but the rice husk suspended does not allow burning gases take away as far as possible, and the uncombusted rice husk taken away should continue gasification, and combustion in rear stove.If the too much burned gas of unburned rice husk is taken away, wearing and tearing will be produced to it through during Tube Sheet of Heat Exchanger, shorten heat exchanger service life, and produce waste.If the rice husk entering hot-blast stove is very few, just do not reach the heat needed for production.As can be seen here, the unit interval enters the fuel quantity of hot-blast stove and air quantity is the key that hot-blast stove reaches peak efficiency, selects rational feeding manner to be the precondition of realizing this goal.
Utility model content
For above-mentioned situation, the purpose of this utility model is the direct biomass burning hot-blast stove providing a kind of long-range charging.
To achieve these goals, the utility model is by the following technical solutions:
A kind of direct biomass burning hot-blast stove of long-range charging, comprise blowing system, burner hearth, jet combustors, smoke chamber, conveying pipeline and feeding system, wherein the top of burner hearth is provided with smoke chamber, the jet combustors be communicated with smoke chamber with burner hearth is provided with in described smoke chamber, described smoke chamber is provided with high-temperature flue gas outlet, the side body of heater of described burner hearth is provided with charging aperture, described charging aperture is communicated with feeding system by conveying pipeline, and described blowing system and burner hearth are communicated with jet combustors and are burner hearth and jet combustors air feed.
Described feeding system comprises strength pay-off, device for discharging and storage bin, wherein storage bin and strength pay-off are arranged at conveying pipeline away from one end of burner hearth and strength pay-off is arranged at this end port, and described device for discharging is arranged between storage bin and conveying pipeline and two ends and is communicated with conveying pipeline with storage bin respectively.
Described strength pay-off is air blast, and described device for discharging is star device for discharging.The drive motors of described star device for discharging is equipped with frequency converter.
Described blowing system comprises air blast, bellows and secondary air duct, wherein bellows are arranged at the bottom of burner hearth and are communicated with burner hearth, described secondary air duct is arranged in furnace body wall and one end and is communicated with jet combustors, and described air blast is arranged at the outside of burner hearth and air outlet is communicated with secondary air duct with bellows respectively.
The air inlet that described bellows are communicated with air blast is provided with main air intake, and described secondary air duct is provided with secondary air-valve, and described secondary air duct is provided with the multiple air inlets be communicated with burner hearth.Described air blast is arranged at side relative with described charging aperture on burner hearth.
Described hot-blast stove comprises the expansion chamber, heat exchanger and the dust pelletizing system that are arranged at outside body of heater further, the high-temperature flue gas outlet of described smoke chamber is communicated with expansion chamber by pipeline, described expansion chamber is communicated with heat exchanger and dust pelletizing system successively, and the top of described heat exchanger is provided with hot-blast outlet.
Described dust pelletizing system comprises dust removal filter, air-introduced machine and chimney, and wherein one end of dust removal filter is connected with heat exchanger, and the other end is communicated with the inlet scoop of air-introduced machine, and the air outlet of described air-introduced machine is communicated with chimney.
Described hot-blast stove adopts vertical type cylinder shape body of heater.
Advantage of the present utility model and beneficial effect are:
1. the utility model pneumatic conveying mode realizes the totally-enclosed conveying of rice husk from warehouse directly to hot-blast stove.This feeding manner feed is stablized, and simple to operation, clean hygiene, alleviates the labour intensity of fireman, ensure that serialization and the automation of combustion process.
2. the utility model hot blast temperature can realize automatically controlling, and automatically can stop feed after furnace temperature exceedes the upper limit, and furnace temperature, lower than Automatic-feeding after lower limit, keeps hot blast temperature comparatively stable, guarantees production safety stable operation.
3. the utility model works owing to there being two air blasts simultaneously, for the combusting rice hull in burner hearth provides sufficient oxygen, so burning is more abundant, thus significantly reduces the operating cost of hot-blast stove.
4. blower fan a tractor serves several purposes of the present utility model, while both having ensured furnace bottom air blast, also will provide Secondary Air for jet combustors.
5. the utility model is a kind of is medium with air, take living beings as the heating equipment of fuel, for thermally-stabilised, operation with no pressure, safe and reliable.
6. biomass fuel of the present utility model is rice husk, need not any process directly burn, and reduces fuel cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1 is air blast, 2 is main air intake, and 3 is ashpit, and 4 is bellows, 5 is fixed grate, and 6 is burner hearth, and 7 is conveying pipeline, and 8 is strength pay-off, 9 is device for discharging, and 10 is storage bin, and 11 is jet combustors, and 12 is high-temperature flue gas outlet, 13 is smoke chamber, and 14 is secondary air-valve, and 15 is expansion chamber, 16 is heat exchanger, and 17 is dust removal filter, and 18 is air-introduced machine, 19 is chimney, and 20 is hot-blast outlet, and 21 is secondary air duct.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the direct biomass burning hot-blast stove of a kind of long-range charging that the utility model provides, comprise blowing system, burner hearth 6, jet combustors 11, smoke chamber 13, conveying pipeline 7 and feeding system, described hot-blast stove adopts vertical type cylinder shape body of heater, the bottom of body of heater is burner hearth 6, the top of described burner hearth 6 is provided with smoke chamber 13, is provided with the jet combustors 11 be communicated with smoke chamber 13 with burner hearth 6 in described smoke chamber 13, and described smoke chamber 13 is provided with high-temperature flue gas outlet 12.The side body of heater of described burner hearth 6 is provided with charging aperture, and described charging aperture is communicated with feeding system by conveying pipeline 7, and described blowing system and burner hearth 6 are communicated with jet combustors 11 and are burner hearth 6 and the oxygen supply of jet combustors 11 air distribution.
The bottom of described jet combustors 11 is open type, is communicated with burner hearth 6, top and the sidewall of described jet combustors 11 are provided with multiple passage, so that the flue gas in jet combustors 11 is flowed in smoke chamber 13 by this passage, the flue dust in described jet combustors 11 is then blocked and falls in burner hearth 6.
Described feeding system comprises strength pay-off 8, device for discharging 9 and storage bin 10, wherein storage bin 10 and strength pay-off 8 are arranged at conveying pipeline 7 away from one end of burner hearth 6 and strength pay-off 8 is arranged at this end port, and described device for discharging 9 is arranged between storage bin 10 and conveying pipeline 7 and two ends and is communicated with conveying pipeline 7 with storage bin 10 respectively.
Described feeding system is arranged in rice husk warehouse, not by the restriction in space.The size of storage bin 10 is determined according to the greatest amount of fuel of hot-blast stove needs every day.This strength pay-off 8 is air blast, and namely biomass fuel rice husk equably, is reliably blown in burner hearth 6 by air blast.
In the present embodiment, described device for discharging 9 is star device for discharging, and the drive motors of described star device for discharging adopts variable-frequency motor or frequency converter is housed, and to control its rotating speed, adjust flux, controls the speed of blanking, thus regulates the heat that hot-blast stove exports.
Described blowing system comprises air blast 1, bellows 4 and secondary air duct 21, wherein bellows 4 are arranged at the bottom of burner hearth 6 and are communicated with burner hearth 6, described secondary air duct 21 is arranged in furnace body wall and one end and is communicated with jet combustors 11, and described air blast 1 is arranged at the outside of burner hearth 6 and air outlet is communicated with secondary air duct 21 with bellows 4 respectively.The air inlet that described bellows 4 are communicated with air blast 1 is provided with main air intake 2, and described secondary air duct 21 is provided with secondary air-valve 14, and described secondary air duct 21 is provided with the multiple air inlets be communicated with burner hearth 6, so that for providing sufficient oxygen in burner hearth 6.
Described air blast 1 is arranged at side relative with described charging aperture on burner hearth 6, while both having ensured burner hearth 6 bottom blast, again for described jet combustors 11 provides Secondary Air.Described hot-blast stove comprises the expansion chamber 15, heat exchanger 16 and the dust pelletizing system that are arranged at outside body of heater further, the high-temperature flue gas outlet 12 of described smoke chamber 13 is communicated with expansion chamber 15 by pipeline, described expansion chamber 15 is communicated with heat exchanger 16 and dust pelletizing system successively, and the top of described heat exchanger 16 is provided with hot-blast outlet 20.
Described dust pelletizing system comprises dust removal filter 17, air-introduced machine 18 and chimney 19, and wherein one end of dust removal filter 17 is connected with heat exchanger 16, and the other end is communicated with the inlet scoop of air-introduced machine 18, and the air outlet of described air-introduced machine 18 is communicated with chimney 19.
The direct biomass burning hot-blast stove of a kind of long-range charging that the utility model provides, its operation principle is:
During described hot-blast stove work, rice husk in storage bin 10 enters into conveying pipeline 7 through star device for discharging, now rice husk is evenly blown in burner hearth 6 by strength pay-off 8, sub-fraction rice husk drops on fire grate burning zone and burns soon, major part rice husk, under the supporting of flue gas and air, burns at burner hearth 6 inner suspension.Minute quantity rice husk is brought in jet combustors 11 by high-temperature gas, Thorough combustion under the secondary air jet effect of described blowing system, thus greatly reduces the smoke content through heat exchanger 16, ensures its Effec-tive Function, reduce the frequency of scratching in the ashes, thus extend the life-span of heat exchanger 16.Under the effect of air-introduced machine 18, in burner hearth 6, be in micro-vacuum state, in order to avoid flue gas is excessive, affect stoker's environment.The high-temperature flue gas that combusting rice hull produces flows in expansion chamber 15 along pipeline, the ash mixed in flue gas relies on gravity to fall in expansion chamber 15, flue gas after sedimentation enters in heat exchanger 16, and the flue gas after cooling enters in dust removal filter 17, enters chimney 19 finally by air-introduced machine 18.The hot blast of the clean high temperature after high-temperature flue gas heat exchange through hot-blast outlet 20 for the production of giving thermal process.Ashes after combusting rice hull fall into the ashpit 3 below fixed grate 5.
In sum, the direct biomass burning hot-blast stove of a kind of long-range charging that the utility model provides is a kind of is medium with air, take living beings as the heating equipment of fuel, for thermally-stabilised, operation with no pressure, safe and reliable, obtain extensive use in a lot of fields.Particularly because hot blast directly adds hot-air, the cold and hot gas temperature difference is large, and the general heat exchange mode of thermal efficiency ratio significantly carries high.Its feed system can be arranged on any idle place, especially it is located in fuel storage, realizes real long-range charging.The utility model have floor space little, install easy to operate, hot blast is clean, steady performance.

Claims (10)

1. the direct biomass burning hot-blast stove of a long-range charging, it is characterized in that, comprise blowing system, burner hearth (6), jet combustors (11), smoke chamber (13), conveying pipeline (7) and feeding system, wherein the top of burner hearth (6) is provided with smoke chamber (13), the jet combustors (11) be communicated with smoke chamber (13) with burner hearth (6) is provided with in described smoke chamber (13), described smoke chamber (13) is provided with high-temperature flue gas outlet (12), the side body of heater of described burner hearth (6) is provided with charging aperture, described charging aperture is communicated with feeding system by conveying pipeline (7), described blowing system is communicated with jet combustors (11) with burner hearth (6), and be burner hearth (6) and jet combustors (11) air feed.
2. by the direct biomass burning hot-blast stove of long-range charging according to claim 1, it is characterized in that, described feeding system comprises strength pay-off (8), device for discharging (9) and storage bin (10), wherein storage bin (10) and strength pay-off (8) are arranged at conveying pipeline (7) one end away from burner hearth (6), and strength pay-off (8) is arranged at this end port, described device for discharging (9) is arranged between storage bin (10) and conveying pipeline (7), and two ends are communicated with conveying pipeline (7) with storage bin (10) respectively.
3., by the direct biomass burning hot-blast stove of long-range charging according to claim 2, it is characterized in that, described strength pay-off (8) is air blast, and described device for discharging (9) is star device for discharging.
4., by the direct biomass burning hot-blast stove of long-range charging according to claim 3, it is characterized in that, the drive motors of described star device for discharging is equipped with frequency converter.
5. by the direct biomass burning hot-blast stove of long-range charging according to claim 1, it is characterized in that, described blowing system comprises air blast (1), a bellows (4) and secondary air duct (21), wherein bellows (4) is arranged at the bottom of burner hearth (6), and be communicated with burner hearth (6), described secondary air duct (21) is arranged in furnace body wall, and one end is communicated with jet combustors (11), described air blast (1) is arranged at the outside of burner hearth (6), and air outlet is communicated with secondary air duct (21) with a bellows (4) respectively.
6. by the direct biomass burning hot-blast stove of long-range charging according to claim 5, it is characterized in that, the air inlet that a described bellows (4) is communicated with air blast (1) is provided with main air intake (2), described secondary air duct (21) is provided with secondary air-valve (14), and described secondary air duct (21) is provided with the multiple air inlets be communicated with burner hearth (6).
7. by the direct biomass burning hot-blast stove of long-range charging according to claim 5, it is characterized in that, described air blast (1) is arranged at the upper side relative with described charging aperture of burner hearth (6).
8. by the direct biomass burning hot-blast stove of the long-range charging described in any one of claim 1-7, it is characterized in that, described hot-blast stove comprises the expansion chamber (15), heat exchanger (16) and the dust pelletizing system that are arranged at outside body of heater further, high-temperature flue gas outlet (12) of described smoke chamber (13) is communicated with expansion chamber (15) by pipeline, described expansion chamber (15) is communicated with heat exchanger (16) and dust pelletizing system successively, and the top of described heat exchanger (16) is provided with hot-blast outlet (20).
9. by the direct biomass burning hot-blast stove of long-range charging according to claim 8, it is characterized in that, described dust pelletizing system comprises dust removal filter (17), air-introduced machine (18) and chimney (19), wherein one end of dust removal filter (17) is connected with heat exchanger (16), the other end is communicated with the inlet scoop of air-introduced machine (18), and the air outlet of described air-introduced machine (18) is communicated with chimney (19).
10. by the direct biomass burning hot-blast stove of the long-range charging described in any one of claim 1-7, it is characterized in that, described hot-blast stove adopts vertical type cylinder shape body of heater.
CN201520637813.1U 2015-08-21 2015-08-21 Direct burming biomass hot -blast furnace of long -range feeding Expired - Fee Related CN205002372U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520637813.1U CN205002372U (en) 2015-08-21 2015-08-21 Direct burming biomass hot -blast furnace of long -range feeding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520637813.1U CN205002372U (en) 2015-08-21 2015-08-21 Direct burming biomass hot -blast furnace of long -range feeding

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Publication Number Publication Date
CN205002372U true CN205002372U (en) 2016-01-27

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105757650A (en) * 2016-03-02 2016-07-13 华南农业大学 Hot-blast heater system for burning bran husks and operation method thereof
CN112460793A (en) * 2020-12-03 2021-03-09 安化孚达泰科智能装备有限公司 Biomass particle combustion device for heat supply of chain plate dryer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105757650A (en) * 2016-03-02 2016-07-13 华南农业大学 Hot-blast heater system for burning bran husks and operation method thereof
CN112460793A (en) * 2020-12-03 2021-03-09 安化孚达泰科智能装备有限公司 Biomass particle combustion device for heat supply of chain plate dryer

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160127

Termination date: 20200821

CF01 Termination of patent right due to non-payment of annual fee