CN101818891B - Industrial boiler for burning bio-briquettes - Google Patents

Industrial boiler for burning bio-briquettes Download PDF

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Publication number
CN101818891B
CN101818891B CN2010101516086A CN201010151608A CN101818891B CN 101818891 B CN101818891 B CN 101818891B CN 2010101516086 A CN2010101516086 A CN 2010101516086A CN 201010151608 A CN201010151608 A CN 201010151608A CN 101818891 B CN101818891 B CN 101818891B
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China
Prior art keywords
arch
boiler
air
combustion chamber
heater
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CN2010101516086A
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Chinese (zh)
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CN101818891A (en
Inventor
吕后明
胡斌
王标兵
李文健
周成华
吴庆杰
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浙江金锅锅炉有限公司
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Priority to CN2010101516086A priority Critical patent/CN101818891B/en
Publication of CN101818891A publication Critical patent/CN101818891A/en
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Abstract

The invention discloses an industrial boiler for burning bio-briquettes. A front arch and a rear arch of which the front part is in an interdigitated shape are arranged in a body of the boiler; upper edges of two adjacent interdigitated parts of the rear arch are provided with corresponding grooves; a check block is arranged between two adjacent interdigitated parts; and two sides of the check block are fixedly connected with rotating shafts which are respectively arranged in the corresponding grooves. Furthermore, a figure-7 partition laminate is arranged above the rear arch; a movable division door is arranged between the rear end of the partition laminate and the rear arch; a circulating air pipe is connected with an air inlet of a draught fan outside the body through an air pipe; the air outlet of the draught fan is connected with a last-stage air bin of a chain grate; and a secondary air pipe at the air inlet on the side wall of a third combustion chamber is deflected toward the lower rear part, and is communicated with a main secondary air pipe outside the body. The industrial boiler has the advantages that: the bio-briquettes are efficiently and stably combusted; the boiler is started at a high speed and has high heat efficiency; black smoke is not generated when the boiler is started; and the integral delivery of the boiler can also be realized.

Description

A kind of Industrial Boiler of burning bio-briquettes
Technical field
The present invention relates to a kind of Industrial Boiler, particularly a kind of Industrial Boiler that in the body of heater of boiler, is provided with face arch and rear arch.
Background technology
Living beings have CO in energy conversion process 2The characteristics of zero-emission, i.e. the CO that burning produces 2Can be fixed in the living beings with the form of carbohydrate again by photosynthesis, this is to reducing main greenhouse gas-CO 2Discharging be very useful.So, not only can alleviate the energy shortage problem with the alternative fuel of living beings as fossil energy, can also improve the ecological environment, significant to the economic construction of China with the sustainable development of society.
Biomass coal is meant and is broken into certain particle size and the coal and the living beings that are dried to a certain degree that blending by a certain percentage adds a small amount of sulphur-fixing agent, the moulded coal that compacting forms under high pressure.Existing burning bio-briquettes boiler is a prototype according to coal burning layered boiler basically, the general logical storehouse air distribution that adopts of this type of furnace, chimney arch is divided into forward and backward arch and unadjustable change, and because biomass coal and general coal-fired fuel characteristic are different, bigger difference is being arranged aspect flammability, energy density and the combustion characteristics, such structure is unfavorable for catching fire of biomass coal and smooth combustion, and the problem of ubiquity over-emitting black exhaust when boiler startup.
Summary of the invention
First purpose of the present invention is to provide a kind of Industrial Boiler of burning bio-briquettes, to realize the smooth combustion of biomass coal.
Second purpose of the present invention is to provide a kind of Industrial Boiler of burning bio-briquettes, to realize the efficient burning of biomass coal.
The 3rd purpose of the present invention is to provide a kind of Industrial Boiler of burning bio-briquettes, so that over-emitting black exhaust not during boiler startup.
Correspondingly, for achieving the above object, first kind of technical scheme that the present invention adopts is: be provided with face arch and the front portion is the rear arch of " fork " type in the body of heater of the Industrial Boiler of burning bio-briquettes, the upper limb of two adjacent interdigital parts of described rear arch has corresponding groove, be provided with block between described two adjacent interdigital parts, the both sides of the described block turning cylinder that has been fixedly connected, described turning cylinder places respectively in the described corresponding groove.
Second kind of technical scheme that the present invention adopts is: be provided with face arch and rear arch in the body of heater of the Industrial Boiler of burning bio-briquettes, the below of body of heater is provided with traveling-grate stoker; In the described body of heater, above rear arch, be provided with the separation laminate of " 7 " font, rear arch and separate laminate with the burner hearth of body of heater from down and on be divided into first combustion chamber, second combustion chamber and the 3rd combustion chamber successively, have an air port on the side wall of described second combustion chamber, the circulation airduct is installed at this place, air port; Be provided with mobilizable isolating door between the rear end of described separation laminate and the rear arch, be installed with adjusting yoke on the isolating door, this adjusting yoke passes the back wall of burner hearth; Outside at body of heater is provided with air-introduced machine, and described circulation airduct links to each other with the air inlet of air-introduced machine by airduct, and the air outlet of air-introduced machine (links to each other with chain fire-gate final stage wind storehouse.
Further, the present invention is provided with secondary wind blast main outside body of heater, have air inlet on the described three-barreled side wall, and the place is equipped with secondary air channel at described air inlet, described secondary air channel is to boiler back lower place deflection, and secondary air channel is communicated with secondary wind blast main.
Further, the front portion of rear arch of the present invention is " fork " type, the upper limb of two adjacent interdigital parts of described rear arch has corresponding groove, be provided with block between described two adjacent interdigital parts, the both sides of the described block turning cylinder that has been fixedly connected, described turning cylinder places respectively in the described corresponding groove.
Compared with prior art, the beneficial effect that has of the present invention is:
(1) rear arch in the body of heater of the present invention is adjustable, can regulate the aperture of rear arch according to the combustion case of biomass coal, thereby promote it to burn efficiently and stably;
(2) the present invention makes isolating door be in closed condition when boiler startup, and high-temperature flue gas is extracted out through air-introduced machine, and the final stage wind storehouse below fire grate enters burner hearth then, thereby has realized the closed circulation between first combustion chamber and second combustion chamber.This design has not only improved the temperature of a wind, has improved the burning condition of fuel, and has accelerated the toggle speed of boiler, the problem of over-emitting black exhaust when having solved boiler startup;
(3) the present invention is provided with secondary air channel in upper furnace, and in order to burning later stage required air being provided and increasing the disturbance of flue gas, thereby the heat loss due to incomplete combustion who reduces fuel improves boiler thermal output;
(4) boiler thermal output height of the present invention can realize that the self-contained of boiler dispatch from the factory.
Description of drawings
Fig. 1 is overall structure master's pseudosection of the Industrial Boiler of burning bio-briquettes of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is that cutaway view is looked on the left side of Fig. 1.
Fig. 4 is the installation graph of a relation of rear arch of the present invention and block.
Fig. 5 is the structural representation of block of the present invention.
Fig. 6 is the structural representation of rear arch of the present invention.
Fig. 7 is the structural representation of isolating door of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing and example.
The Industrial Boiler of burning bio-briquettes shown in Figure 1 is to improve to obtain on the basis of the single drum longitudinal of DZL fire tube boiler.
As Fig. 1~shown in Figure 3, the Industrial Boiler of burning bio-briquettes of the present invention comprises that mainly body of heater 30, fuel feed bin 1, traveling-grate stoker 2, inside are provided with the drum 6 of pyrotechnics pipe 7, side water wall tube bank 8, side water wall next part case 28, front water wall tube bank 9, front water wall next part case 29.The top of drum 6 is provided with water inlet 26 and steam (vapor) outlet 27.Be provided with face arch 4 and rear arch 5 in the body of heater 30; The top and bottom of side water wall tube bank 8 are communicated with drum 6 and side water wall next part case 28 respectively; The top and bottom of front water wall tube bank 9 are communicated with drum 6 and front water wall next part case 29 respectively.
As first kind of embodiment of the present invention, as shown in Figure 1, be provided with the rear arch 5 that face arch 4 and front portion are " fork " type in the body of heater 30.As shown in Figure 6, the upper limb of two adjacent interdigital parts 51 of rear arch 5 has groove 12.As shown in Figure 5, the both sides of block 10 turning cylinder 11 that has been fixedly connected, turning cylinder 11 is complementary with groove 12, and groove 12 can be used for placing turning cylinder 11.Block 10 has been fixedly connected behind the turning cylinder 11, as shown in Figure 4, turning cylinder 11 is placed on the corresponding groove 12 of two adjacent interdigital parts 51, and block 10 is placed between two adjacent interdigital parts 51.One end of turning cylinder 11 passes the side wall of body of heater 30, links to each other with body of heater 30 device of rotation driving outward.By device of rotation driving turning cylinder 11 is rotated, rotate the gap of adjusting between each block 10, realize that the aperture of rear arch 5 is regulated thereby drive block by turning cylinder 11.Because the aperture of rear arch 5 of the present invention can be regulated, be different from traditional fixed chimney arch, therefore the Industrial Boiler of burning bio-briquettes of the present invention can conveniently be regulated the aperture of ground rear arch 5 according to the combustion case of biomass coal, thereby promotes that biomass coal is efficient, burn steadily.
As second kind of embodiment of the present invention, as shown in Figure 1, also be provided with the separation laminate 13 of " 7 " font in the body of heater 30, such design makes that the ash content in the flue gas can be separated effectively when the flue gas bump separated the rear end of dividing plate 13 (i.e. an end of the back wall 32 of close body of heater 30).Rear arch 5 and separate laminate 13 burner hearth of body of heater 30 is divided into first combustion chamber 14, second combustion chamber 15 and the 3rd combustion chamber 16 on from descending successively.Fuel on the traveling-grate stoker 2 at first in first combustion chamber 14 fire burns; Carbon granules is by the aditus laryngis between face arch 4 and the rear arch 5 completely for high-temperature flue gas and unburned subsequently, and the gap of 10 of each blocks of rear arch 5 enters second combustion chamber 15 and further burns; Open isolating door 22 by the pulling of direction outside body of heater adjusting yoke 23, make the flue gas that comes out from second combustion chamber 15 under the guiding of " 7 " font structure of separating laminate 13, be folded to by rear end of separating laminate 13 and the space between the rear arch 5 and enter the 3rd combustion chamber 16.The 3rd combustion chamber 16 is communicated with drum 6 by turning to smoke-box 25.The present invention is provided with slag-drip opening 24 in the rear end, bottom of burner hearth, turns to the lime-ash that separates out when entering the 3rd combustion chamber 16 from second combustion chamber 15 in order to the venting flue gas.As shown in Figure 1, have an air port on the side wall of second combustion chamber 15, circulation airduct 17 is installed at this place, air port; The rear end and the gap between the rear arch 5 of separating laminate 13 are provided with mobilizable isolating door 22, be installed with adjusting yoke 23 (as shown in Figure 7) on the isolating door 22, this adjusting yoke 23 passes the back wall 32 of burner hearth, by stretching adjusting yoke 23, can regulate rear arch 5 and the aperture of separating between the dividing plate 13; Be provided with air-introduced machine 21 in the outside of body of heater 30, circulation airduct 17 links to each other by the air inlet of airduct with air-introduced machine 21, and the air outlet of air-introduced machine 21 links to each other with the final stage wind storehouse 20 of traveling-grate stoker 2.When boiler startup, make isolating door 22 be in closed condition, open air-introduced machine 21, flue gas is realized closed circulation between first combustion chamber 14 and second combustion chamber 15 thus, make boiler to heat up rapidly, improve the toggle speed of boiler, and when having solved boiler startup because insufficient boiler over-emitting black exhaust problem that produces of burning; Simultaneously owing to improved the temperature of a wind, thereby the burning condition of biomass coal when having improved boiler startup makes flameholding.
As the third embodiment of the present invention, shown in Fig. 1~3, on the basis of second kind of embodiment, the present invention also can be provided with secondary wind blast main 19 at body of heater 30, have air inlet on the side wall of the 3rd combustion chamber 16, at the air inlet place secondary air channel 18 is installed, secondary air channel 18 is to boiler back lower place slightly deflect (being secondary air channel 18, the air outlet relative with the 3rd combustion chamber 16 is directed downwards deflection towards the back wall 32 of burner hearth slightly), and secondary air channel 18 is communicated with secondary wind blast main 19.Because the present invention can feed secondary wind on the top of burner hearth, in order to burning later stage required air being provided and increasing the disturbance of flue gas, thereby the heat loss due to incomplete combustion who reduces fuel improves boiler thermal output.Simultaneously, because secondary wind air intake direction slightly to boiler back lower place deflection, so played the purging effect to separating laminate 13, has prevented to separate the dust stratification on laminate 13 tops effectively.
In above second kind and the third embodiment because rear arch 5 is " fork " type, and is provided with block 10 between two adjacent interdigital parts 51 of rear arch 5, therefore can promote biomass coal efficiently, burn steadily.Yet need to prove, for these two kinds of embodiments of the present invention, wherein rear arch 5 can be traditional structure, the front portion that is rear arch is not " fork " type and does not have corresponding block 10, the boiler of this structure of the present invention can make flue gas realize closed circulation equally between first combustion chamber 14 and second combustion chamber 15, guarantees biomass coal sufficient combustion, over-emitting black exhaust not when boiler startup.
The course of work of the present invention is as follows:
Biomass coal 3 in the fuel feed bin 1 drops on the traveling-grate stoker 2 in the gravity effect, fuel is along with fire grate is delivered to first combustion chamber, 15 internal combustion, flue gas that burning produces and uncombusted carbon granules be by the aditus laryngis between face arch 4 and the rear arch 5, and the gap between the block 10 of rear arch 5 enters second combustion chamber 15 and further burns.Subsequently, the flue gas that comes out from second combustion chamber 15 is folded under the guiding of separating laminate 13 and enters the 3rd combustion chamber 16, and the secondary wind here provides burning required oxygen of later stage.The flue gas that comes out from the 3rd combustion chamber 16 enters pyrotechnics pipe 7 in the drum 6 by turning to smoke-box 25, enters atmosphere by follow-up deduster and air-introduced machine at last.The heat that whole process burning produces is absorbed by pyrotechnics pipe 7 heating surfaces of water wall surface around the burner hearth and drum.
The present invention is in the boiler startup stage, and isolating door 22 is in closed condition, opens air-introduced machine 21 simultaneously, makes flue gas realize closed circulation between first combustion chamber 14 and second combustion chamber 15, makes boiler heat up rapidly, quickens the toggle speed of boiler.When treating that boiler startup finishes, then open isolating door 22, make flue gas carry out heat exchange through each heat-transfer surface by normal flow.In the boiler operatiopn stage, can be according to the combustion case of biomass coal, rotate the turning cylinder 11 of rear arch 5, regulating the aperture of 10 of each blocks, thereby fuel is being burnt under only situation.

Claims (3)

1. the Industrial Boiler of a burning bio-briquettes, it is characterized in that: be provided with face arch (4) and rear arch (5) in the body of heater of described boiler (30), the below of body of heater (30) is provided with traveling-grate stoker (2); In the described body of heater (30), be provided with the separation laminate (13) of " 7 " font in the top of rear arch (5), rear arch (5) and separate laminate (13) with the burner hearth of body of heater (30) from down and on be divided into first combustion chamber (14), second combustion chamber (15) and the 3rd combustion chamber (16) successively, have an air port on the side wall (31) of described second combustion chamber (15), circulation airduct (17) is installed at this place, air port; Be provided with mobilizable isolating door (22) between the rear end of described separation laminate (13) and the rear arch (5), be installed with adjusting yoke (23) on the isolating door (22), this adjusting yoke (23) passes the back wall (32) of burner hearth; Be provided with air-introduced machine (21) in the outside of body of heater (30), described circulation airduct (17) links to each other by the air inlet of airduct with air-introduced machine (21), and the air outlet of air-introduced machine (21) links to each other with the final stage wind storehouse (20) of traveling-grate stoker (2).
2. the Industrial Boiler of a kind of burning bio-briquettes according to claim 1, it is characterized in that: outside body of heater (30), be provided with secondary wind blast main (19), have air inlet on the side wall (31) of described the 3rd combustion chamber (16), at described air inlet place secondary air channel (18) is installed, described secondary air channel (18) is to boiler back lower place deflection, and secondary air channel (18) is communicated with secondary wind blast main (19).
3. the Industrial Boiler of a kind of burning bio-briquettes according to claim 1 and 2, it is characterized in that: the front portion of described rear arch (5) is " fork " type, the upper limb of adjacent two interdigital parts (51) of described rear arch (5) has corresponding groove (12), be provided with block (10) between described adjacent two interdigital parts (51), the both sides of described block (10) turning cylinder (11) that has been fixedly connected, described turning cylinder (11) places respectively in the described corresponding groove (12).
CN2010101516086A 2010-04-20 2010-04-20 Industrial boiler for burning bio-briquettes CN101818891B (en)

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Application Number Priority Date Filing Date Title
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CN101818891B true CN101818891B (en) 2011-08-31

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102384485A (en) * 2011-11-14 2012-03-21 宝鸡市海浪锅炉设备有限公司 Energy-saving coal-fired boiler with multi-section type furnace arch
CN103032870B (en) * 2012-12-20 2017-02-08 北京中煤神州节能环保技术开发有限公司 Small-wave flame disturbance extension combustion device
CN103884009B (en) * 2014-04-11 2016-03-09 包钢重菱锅炉制造有限公司 A kind of biomass thermal wind furnace
CN105020885B (en) * 2015-08-07 2018-03-02 陈喜春 Multifunctional gasification biomass fuel hot-water boiler
CN105841346A (en) * 2016-04-12 2016-08-10 杜普利 Biomass type coal burning boiler

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2048160U (en) * 1989-02-28 1989-11-22 王永钰 Single boiler-drum longitudinal whirlwind re-buring hearth of chain boiler
CN201003046Y (en) * 2006-11-19 2008-01-09 周开根 Dynamic gasification oven for producing synthesized gas using garbage, biomass as material
CN201212674Y (en) * 2007-07-27 2009-03-25 常州能源设备总厂有限公司 Back roll adjustable independence wind chamber combustion apparatus
CN201242147Y (en) * 2008-04-25 2009-05-20 山西天宇环保技术有限公司 Square briquette boiler
CN101539297A (en) * 2009-05-04 2009-09-23 宋振林 Dewatered sludge endless grate incinerator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2048160U (en) * 1989-02-28 1989-11-22 王永钰 Single boiler-drum longitudinal whirlwind re-buring hearth of chain boiler
CN201003046Y (en) * 2006-11-19 2008-01-09 周开根 Dynamic gasification oven for producing synthesized gas using garbage, biomass as material
CN201212674Y (en) * 2007-07-27 2009-03-25 常州能源设备总厂有限公司 Back roll adjustable independence wind chamber combustion apparatus
CN201242147Y (en) * 2008-04-25 2009-05-20 山西天宇环保技术有限公司 Square briquette boiler
CN101539297A (en) * 2009-05-04 2009-09-23 宋振林 Dewatered sludge endless grate incinerator

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