CN103277790A - Biomass particle fuel clean combustion stove - Google Patents
Biomass particle fuel clean combustion stove Download PDFInfo
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- CN103277790A CN103277790A CN2013101830310A CN201310183031A CN103277790A CN 103277790 A CN103277790 A CN 103277790A CN 2013101830310 A CN2013101830310 A CN 2013101830310A CN 201310183031 A CN201310183031 A CN 201310183031A CN 103277790 A CN103277790 A CN 103277790A
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Abstract
Disclosed is a biomass particle fuel clean combustion stove. The biomass particle fuel clean combustion stove is composed of a combustion stove body and a smoke water heat exchanger which are arranged in parallel, and is characterized in that a liner is divided into a fuel combustion chamber, a vaporizing chamber and an ash accumulating chamber through an upper cover plate, a flame stabilization plate, an upper stove grate and a lower stove grate; a feeding pipe arranged at the bottom of a feeding bin penetrates through the lateral wall of an outer cover and the lateral wall of the liner, and is inserted in the vaporizing chamber from outside to inside in an inclined mode; a primary air inlet is formed in the outer lateral side of an ash discharge drawer; a secondary air inlet is formed in the lower portion of the peripheral lateral wall of the outer cover; air vents are formed in the lower portion of the peripheral lateral wall of the combustion chamber of the liner; a smoke duct is arranged on the upper portion of the lateral wall of the combustion chamber of the liner. The biomass particle fuel clean combustion stove ensures that biomass particle fuel is completely and stably vaporized and is complete in combustion and high in temperature, improves combustion efficiency of the fuel, obviously reduces the dust carrying amount in smoke, ensures that smoke generated after fuel combustion is clean, effectively avoids ash accumulation and slagging, improves heat exchange efficiency of heat exchange equipment, and is simple and compact in structure, convenient to operate and low in operating cost.
Description
Technical field
The present invention relates to burner, specifically biomass granule fuel clean burning boiler.
Background technology
Along with the fossil energy price is soaring continuously, various renewable and clean energy resource exploitations are paid much attention to, and some agricultural-forestry biomass resource-rich countries are with the development priority of biomass granule fuel as the new forms of energy strategical planning.What investment was minimum in biomass energy, social benefit is the highest is exactly biomass granule fuel.
The granular fuel density that living beings such as stalk, agriculture and forestry organic waste material form after compression increases, be convenient to store and transportation, and combustion characteristics obviously is improved, it is few to have black smoke, prosperous, the sufficient combustion of firepower, not advantage such as flying dust, clean hygiene, and raw material sources is extensive, price is low, simple to operate.Be particularly suitable for enterprise, hotel, restaurant and domestic consumer original hot water or steam boiler equipment are undergone technological transformation, under the prerequisite of not overlapping investment, replace coal or oil with living beings, to reach purpose of energy saving.
The fast development of biomass granule fuel will certainly drive the development work of Related products such as its combustion apparatus.At present, the burning of biomass granule fuel mostly is that combustion apparatus at traditional cooking stove and fire coal or fuel oil carries out.The cooking stove burning is the most original method of utilizing, easy and simple to handle, investment economizes, but efficiency of combustion is generally on the low side, is generally 10～20% as agricultural bavin kitchen range furnace thermal efficiency, advanced fuel saving stove furnace thermal efficiency also only about 30%, thereby cause the serious waste of biomass resource; Because the intrinsic characteristic of biomass granule fuel itself makes when it is applied to fire coal or oil burning boiler, has limited the raising of system thermal efficiency.
In addition, because the existence of factors such as the structural design of the characteristic of biomass fuel itself, combustion apparatus and service condition, in the biomass combustion equipment of routine, ignition temperature is low, causes dust stratification and the slagging scorification of boiler heating surface easily.Dust stratification refers to that temperature is lower than the deposition of soot particle on heating surface of ash fusion point, mostly occurs on the boiler convection heating surface; Slagging scorification mainly is that the soot particle by the fusing of carrying secretly in the flue gas or semi-molten touches heating surface and condenses, and constantly grows on heating surface, gathers and form, and mostly occurs in stove on the radiation heating-surface.Dust stratification and slagging scorification have directly caused the minimizing of biomass boiler heat exchange efficiency, have reduced the utilization ratio of living beings.
Summary of the invention
The present invention proposes a kind of biomass granule fuel clean burning boiler, to overcome the above-mentioned defective of prior art, improves the efficiency of combustion of living beings and the heat exchange efficiency of boiler, avoids dust stratification and the slagging scorification problem of flying dust, realizes the clean and effective burning of living beings.
Technical solution problem of the present invention adopts following technical scheme:
Biomass granule fuel clean burning boiler, be made of combustion furnace body arranged side by side thirty years of age and flue gas water-to-water heat exchanger, the combustion furnace body mainly is made of outer cover, the inner bag that places outer cover inside, the bottom that places inner bag and the ash discharge drawer that runs through mutually with lateral wall of outer cover, the agitator that is fixed on the feeding warehouse on a lateral wall top of outer cover and is inserted into inner bag; It is characterized in that: the inside of inner bag is divided into gas combustion chamber, vaporizer and ash accumulating chamber by upper end cover, steady flame plate, last grate and following grate from top to bottom; The feed pipe that the feeding warehouse bottom arranges runs through the sidewall of outer cover and inner bag, and ecto-entad tilts to be inserted in the vaporizer space; Offer the primary air import on the lateral surface of ash discharge drawer, lower sidewall is offered the auxiliary air import around the outer cover, and lower sidewall is offered air vent around the inner bag combustion chamber; The top of the sidewall of combustion chamber of inner bag arranges a smoke tube, connects the flue of combustion chamber and flue gas water-to-water heat exchanger.
Design feature of the present invention also is:
Radially offer 3-8 ramp way on the described steady flame plate.
The bottom of described feeding warehouse arranges charging plug.
Primary air entrance location on the described ash discharge drawer outside face arranges air intake plug moving up and down.
Described agitator by through the waling stripe of outer cover sidewall, inner bag ash accumulating chamber section sidewall, pass gray moving that grate is inserted into the material toggling rake of vaporizer and is inserted into down the grate lower surface downwards straight up and harrow and form.
Described flue gas water-to-water heat exchanger is by the dividing plate on vertical tube bank, flue, top, the flue gas baffling chamber of bottom, the cooling water inlet of lateral wall bottom and the hot water of upper surface; Steam (vapor) outlet and exhanst gas outlet are formed.
Compare with the prior art scheme, remarkable result of the present invention is embodied in:
(1) because inner bag is divided into vaporizer and combustion chamber, and the dust that stable gasification produces has significantly reduced the smoke content that follow-up ducted flue gas carries than the dust much less that the direct violent combustion process of living beings produces; Simultaneously, owing to have the setting of the steady flame plate of ramp way, make the combustion gas generation swirl flow combustion reaction of the combustion chamber in the inner bag, air-flow rotatablely moves, make the small amount of dust of carrying in the combustion gas also be thrown toward the combustion chamber around and fall voluntarily, make the flue gas cleaning of discharging by smoke tube.
(2) this device is arranged biomass granule fuel combustion furnace body and flue gas water-to-water heat exchanger branch, and in combustion furnace body outer cover, inner bag is set, the gasification of living beings and combustion process be limited in the inner bag carry out, owing to increased the radiation heat transfer of inner bag, ignition temperature level in the stove is improved, has improved the efficiency of combustion efficient of biomass granule fuel; Owing to the existence of cold air chamber, significantly reduce the heat radiation of outer wall simultaneously, made the thermal efficiency of system increase substantially.
(3) the needed air of biomass gasification process is entered by the primary air import on the ash discharge drawer, at first absorb the heat of ash content in the ash discharge drawer, the up grate that passes down absorbs the ash content be deposited in the ash accumulating chamber and the heat of bulky grain coke again, and then rises to and participate in gasification reaction in the vaporizer.Because absorbed the waste heat of ash discharge, the required primary air temperature that gasifies is promoted significantly, has improved the gasification reaction temperature, has avoided the slagging scorification of ash content effectively.
(4) since in the gas combustion chamber fuel gas buring formed the suction force that makes progress, make that auxiliary air constantly upwards flows in the air chamber, and offer the fuel gas buring in the gas combustion chamber.Auxiliary air has also obtained the radiation heat transfer effect of inner bag sidewall in air chamber, its temperature is improved, and correspondingly also than conventional fuel gas buring temperature height, it is cleaner to make fuel gas buring get for the temperature of fuel gas buring, efficiency of combustion improves, and heat exchange efficiency is also correspondingly promoted simultaneously.
(5) setting of agitator makes that the gasification of biomass fuel is stable, and is easy to the carrying out of deslagging.
(6) simple in structure, compact, easy to operate.Operating cost is low.
Description of drawings:
Fig. 1 is structural representation of the present invention.
Fig. 2 is A-A cutaway view among Fig. 1.
Fig. 3 is the vertical view of the steady flame plate among Fig. 1.
Fig. 4 is B-B cutaway view among Fig. 3.
Number in the figure: 1 combustion furnace body, 1a outer cover, 1b heat-insulation layer, the import of 1c auxiliary air, the 2a feeding warehouse, 2b charging plug, 2c feed pipe, 3a inner bag, the 3b air vent, the last grate of 3c, grate under the 3d, the steady flame plate of 3e, 3f upper end cover, 3h ramp way, the plug of 4a air intake, the import of 4b primary air, 4c ash discharge drawer, 5 ash accumulating chamber, 6 vaporizers, 7 agitators, 7a gray moving rake, 7b waling stripe, 7c material toggling rake, 8 combustion chambers, 9 flue gas water-to-water heat exchangers, flue gas baffling chambers 10,11 tube banks, 12 cooling water inlets, 13 exhanst gas outlets, 14 dividing plates, 15 flues, 16 Re Shui ﹠amp; Steam (vapor) outlet, 17 smoke tubes.
Below by the specific embodiment, and the invention will be further described by reference to the accompanying drawings.
The specific embodiment:
Referring to Fig. 1, Fig. 2, this biomass granule fuel clean burning boiler is vertical structure, be made of combustion furnace body 1 arranged side by side thirty years of age and flue gas water-to-water heat exchanger 9, combustion furnace body 1 mainly is made of outer cover 1a, the inner bag 3a that places outer cover 1a inside, the bottom that places inner bag 3a and the ash discharge drawer 4c that runs through mutually with lateral wall of outer cover 1a, the agitator 7 that is fixed on the feeding warehouse 2a on a lateral wall top of outer cover 1a and is inserted into inner bag 3a.
Be coated with last layer heat-insulation layer 1b in the inboard of outer cover 1a.The inside of inner bag 3a is divided into gas combustion chamber 8, vaporizer 6 and ash accumulating chamber 5 by upper end cover 3f, steady flame plate 3e, last grate 3c and following grate 3d from top to bottom.On steady flame plate 3e, radially offer 3-8 ramp way 3h, get 8 in the present embodiment, as shown in Figure 3, Figure 4.In the ash accumulating chamber 5 of inner bag 3a, agitator 7 is set.This agitator 7 by through the waling stripe 7b of 5 sections sidewalls of ash accumulating chamber of outer cover 1a sidewall, inner bag 3a, pass gray moving that grate 3c is inserted into the material toggling rake 7c of vaporizer 6 and is inserted into down grate 3d lower surface downwards straight up and harrow 7a and form, can the biomass granule fuel of vaporizer 6 be stirred, be beneficial to its fully stable gasification, simultaneously also combing is carried out in the ash discharge in the ash accumulating chamber 5, ash content is dropped among the ash discharge drawer 4c.The bottom of feeding warehouse 2a connects a feed pipe 2c, and it runs through sidewall and the inner bag 3a sidewall of outer cover 1a, and ecto-entad is inserted in the vaporizer 6 of inner bag 3a; One horizontal feed plug 2b is set in the bottom of feeding warehouse 2a, biomass granule fuel is entered in the vaporizer 6 of inner bag 3a, can stop feed on the one hand during insertion, can play the effect of sealing on the other hand, avoid flame and combustion gas to overflow by feeding warehouse 2a.Offer primary air import 4b at the lateral surface of ash discharge drawer 4c, and the primary air import 4b position on ash discharge drawer 4c lateral surface arranges air intake moving up and down plug 4a, to regulate the intake of primary air.Lower sidewall is offered auxiliary air import 1c around outer cover 1a, lower sidewall is offered air vent 3b around inner bag 3a combustion chamber 8, so that auxiliary air enters combustion chamber 8 from auxiliary air import 1c, the combustion gas that vaporizer 6 gasifications are generated rises to combustion chamber 8 burnings by ramp way 3h; The top of combustion chamber 8 sidewalls of inner bag 3a arranges a smoke tube 17, connects the flue 15 of combustion chamber 8 and flue gas water-to-water heat exchanger 9, and the high-temperature flue gas that combustion chamber 8 internal combustion are generated is guided in the flue gas water-to-water heat exchanger 9.Flue gas water-to-water heat exchanger 9 is by the dividing plate 14 on vertical tube bank 11, flue 15, top, the flue gas baffling chamber 10 of bottom, the cooling water inlet 12 of lateral wall bottom and the hot water of upper surface; Steam (vapor) outlet 16 and exhanst gas outlet 13 are formed.
During use, at first agitator 7 can be evacuated to foremost outward, drop into biomass granule fuel in feeding warehouse 2a, extract charging plug 2b, make fuel enter combustion chamber 8 among the inner bag 3a, the push-and-pull agitator 7 back and forth, and charging is evenly distributed in vaporizer 6.Extract ash discharge drawer 4c outward out, put into fire-lighter, upwards extract air intake plug 4a and make primary air import 4b reach maximum, and ash discharge drawer 4c is pushed, the biomass granule fuel in the vaporizer 6 is caught fire, temperature raises, and the generating gasification reaction.After the fuel gas that generates entered combustion chamber 8 by the ramp way 3h on the steady flame plate 3e, the swirl flow combustion reaction of combustion gas further took place.Inner bag 3a interior temperature in back rises owing to burn, and under the drive of thermal current climbing power, makes the cold air in the outer cover 1a outside enter the combustion reactions of combustion chamber 8 interior further promotion fuel and fuel gas from the auxiliary air import 1c of bottom.Because the ramp way 3h on the steady flame plate 3e is arranged so that combustion gas swirl flow combustion in combustion chamber 8, air-flow is and rotatablely moves, make the dust that carries in the combustion gas be thrown toward also falling voluntarily of combustion chamber 8 all around, make the flue gas cleaning of discharging by smoke tube 17, contain dust hardly, avoid dust to dust stratification and the slagging scorification of follow-up heat exchange unit greatly.In running, can regulate the air intake plug 4a on the ash discharge drawer 4c, make the flame in the stove reach optimization.The bulky grain lime-ash that generates behind the gasification reaction falls on the following grate 3d of ash accumulating chamber 5, and the powdery lime-ash then may directly fall into ash discharge drawer 4c, also may be deposited in the ash accumulating chamber 5.Behind the burning certain hour, the push-and-pull agitator 7 back and forth, on the one hand the biomass granule fuel to vaporizer 6 stirred, and are beneficial to its fully stable gasification, simultaneously the ash content that is deposited in the ash accumulating chamber 5 dropped among the ash discharge drawer 4c.
After the high-temperature flue gas that burning generates enters the flue 15 of flue gas water-to-water heat exchanger 9 by smoke tube 17, it is the vertical excessively tube bank of downstream 11, carry out heat exchange with the cold medium in the tube bank 11, upwards flow in the other direction in 10 backs, flue gas baffling chamber that arrive the bottom, carry out heat exchange again, then discharged by exhanst gas outlet 13.The hot water that obtains behind heat temperature raising and steam are by Re Shui ﹠amp; Steam (vapor) outlet 16 is discharged.
Claims (6)
1. biomass granule fuel clean burning boiler, constituted by combustion furnace body (1) arranged side by side thirty years of age and flue gas water-to-water heat exchanger (9), combustion furnace body (1) mainly by outer cover (1a), the agitator (7) that places outer cover (1a) inner inner bag (3a), the bottom that places inner bag (3a) and the ash discharge drawer (4c) that runs through mutually with lateral wall of outer cover (1a), be fixed on the feeding warehouse (2a) on a lateral wall top of outer cover (1a) and be inserted into inner bag (3a) constitutes; It is characterized in that: the inside of inner bag (3a) is divided into gas combustion chamber (8), vaporizer (6) and ash accumulating chamber (5) by upper end cover (3f), steady flame plate (3e), last grate (3c) and following grate (3d) from top to bottom; The feed pipe (2c) that feeding warehouse (2a) bottom arranges runs through the sidewall of outer cover (1a) and inner bag (3a), and ecto-entad tilts to be inserted in vaporizer (6) space; Offer primary air import (4b) on the lateral surface of ash discharge drawer (4c), lower sidewall is offered auxiliary air import (1c) around the outer cover (1a), and lower sidewall is offered air vent (3b) around inner bag (3a) combustion chamber (8); The top of combustion chamber (8) sidewall of inner bag (3a) arranges a smoke tube (17), connects the flue (15) of combustion chamber (8) and flue gas water-to-water heat exchanger (9).
2. biomass granule fuel clean burning boiler according to claim 1 is characterized in that radially offering on the described steady flame plate (3e) 3-8 ramp way (3h).
3. biomass granule fuel clean burning boiler according to claim 1 is characterized in that the bottom of described feeding warehouse (2a) arranges charging plug (2b).
4. biomass granule fuel clean burning boiler according to claim 1 is characterized in that primary air import (4b) position on described ash discharge drawer (4c) lateral surface arranges air intake plug moving up and down (4a).
5. biomass granule fuel clean burning boiler according to claim 1, it is characterized in that described agitator (7) by through the waling stripe (7b) of outer cover (1a) sidewall, inner bag (3a) ash accumulating chamber (5) section sidewall, pass gray moving that grate (3c) is inserted into the material toggling rake (7c) of vaporizer (6) and is inserted into down grate (3d) lower surface downwards straight up and harrow (7a) and form.
6. biomass granule fuel clean burning boiler according to claim 1 is characterized in that described flue gas water-to-water heat exchanger (9) is by the dividing plate (14) on vertical tube bank (11), flue (15), top, the flue gas baffling chamber (10) of bottom, the cooling water inlet (12) of lateral wall bottom and the hot water of upper surface; Steam (vapor) outlet (16) and exhanst gas outlet (13) are formed.
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| CN2013101830310A CN103277790A (en) | 2013-05-08 | 2013-05-08 | Biomass particle fuel clean combustion stove |
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| CN2013101830310A CN103277790A (en) | 2013-05-08 | 2013-05-08 | Biomass particle fuel clean combustion stove |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759416A (en) * | 2014-01-11 | 2014-04-30 | 孙长杰 | Cabinet type biomass hot blast stove |
| CN103983104A (en) * | 2014-06-04 | 2014-08-13 | 苏州新协力环保科技有限公司 | Biomass melting furnace |
| CN104748365A (en) * | 2013-12-25 | 2015-07-01 | 郑州金土地能源科技有限公司 | Multi-return-stroke gasification boiler of biomass fluidized bed |
| CN106039747A (en) * | 2016-07-13 | 2016-10-26 | 范亚平 | Vertical-type stock-solution outside tube falling-film evaporator |
| CN109423316A (en) * | 2017-08-31 | 2019-03-05 | 佛山市宏焰能源科技有限公司 | Biomass gasification fired equipment and its application method |
| CN113803712A (en) * | 2021-09-22 | 2021-12-17 | 周林泉 | Self-priming combustion furnace based on renewable energy and convenient for combustion of wood compressed particles |
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| CN102230617A (en) * | 2011-06-22 | 2011-11-02 | 王全红 | Coal-fired gasification mechanical combustion boiler |
| CN202328185U (en) * | 2011-12-14 | 2012-07-11 | 柳文 | Direct-fired gasification furnace for biomass |
| CN102777890A (en) * | 2012-08-16 | 2012-11-14 | 合肥工业大学 | Biomass fuel boiler |
| CN102878564A (en) * | 2012-09-13 | 2013-01-16 | 闫桂林 | Counter-burning wet combustion furnace |
| CN102944006A (en) * | 2012-11-30 | 2013-02-27 | 成都王安产业有限公司 | Biomass pyrolysis combustion furnace |
| CN203273863U (en) * | 2013-05-08 | 2013-11-06 | 合肥工业大学 | Biomass granular fuel clean combustion boiler |
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2013
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102230617A (en) * | 2011-06-22 | 2011-11-02 | 王全红 | Coal-fired gasification mechanical combustion boiler |
| CN202328185U (en) * | 2011-12-14 | 2012-07-11 | 柳文 | Direct-fired gasification furnace for biomass |
| CN102777890A (en) * | 2012-08-16 | 2012-11-14 | 合肥工业大学 | Biomass fuel boiler |
| CN102878564A (en) * | 2012-09-13 | 2013-01-16 | 闫桂林 | Counter-burning wet combustion furnace |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748365A (en) * | 2013-12-25 | 2015-07-01 | 郑州金土地能源科技有限公司 | Multi-return-stroke gasification boiler of biomass fluidized bed |
| CN103759416A (en) * | 2014-01-11 | 2014-04-30 | 孙长杰 | Cabinet type biomass hot blast stove |
| CN103983104A (en) * | 2014-06-04 | 2014-08-13 | 苏州新协力环保科技有限公司 | Biomass melting furnace |
| CN106039747A (en) * | 2016-07-13 | 2016-10-26 | 范亚平 | Vertical-type stock-solution outside tube falling-film evaporator |
| CN109423316A (en) * | 2017-08-31 | 2019-03-05 | 佛山市宏焰能源科技有限公司 | Biomass gasification fired equipment and its application method |
| CN113803712A (en) * | 2021-09-22 | 2021-12-17 | 周林泉 | Self-priming combustion furnace based on renewable energy and convenient for combustion of wood compressed particles |
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Application publication date: 20130904 |