CN105444410A - Biomass hot blast stove and application thereof - Google Patents
Biomass hot blast stove and application thereof Download PDFInfo
- Publication number
- CN105444410A CN105444410A CN201511005669.0A CN201511005669A CN105444410A CN 105444410 A CN105444410 A CN 105444410A CN 201511005669 A CN201511005669 A CN 201511005669A CN 105444410 A CN105444410 A CN 105444410A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- pure air
- hot blast
- burner hearth
- air heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
- F24H3/067—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators using solid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0052—Details for air heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
- F24H9/2092—Arrangement or mounting of control or safety devices for air heaters using solid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/02—Heating arrangements using combustion heating
- F26B23/028—Heating arrangements using combustion heating using solid fuel; burning the dried product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/08—Granular materials
Abstract
The invention provides a biomass hot blast stove. The biomass hot blast stove comprises a heart and a hearth processing area, wherein a fuel inlet is formed in one sidewall of the hearth; a first fixed fire grate is arranged at the lower part of the hearth; a combustion fan is arranged below the fixed fire grate; a second fixed fire grate is arranged at the lower part of the hearth heating area, and a clean air heat exchanger is arranged above the hearth heating area; a fire stopping wall for forcibly driving smoke to flow below the heat exchanger is arranged at one side of the clean air heat exchanger, and a smoke outlet is formed in the other side of the clean air heat exchanger. The biomass hot blast stove is simple in structure; workers can operate conveniently; the temperature of the hearth is easily controlled; the temperature of hot air generated by the clean air heat exchanger can stably fluctuates up and down.
Description
Technical field
The invention belongs to field of combustion equipment, being specifically related to a kind of take living beings as combustion apparatus and the application thereof of fuel.
Background technology
In current industry, boiling granulating drying equipment mainly adopts Boiler Steam and electrical heating to make pure air reach 50-150 DEG C as thermal source; thus reach material and to granulate in body dry object; fire coal need be that steam is transported to boiling granulating machine heat exchanger again as thermal source by steam boiler burning conversion by the method; boiler for producing 0.6-0.7Mpa vapor (steam) temperature 140-150 DEG C out; such granulation drying mode needs artificial amount large; the coal-fired thermal efficiency can not be brought into play, and energy resource consumption is larger.
Produce the very high flue gas of heat using living beings as fuel, the living beings that corncob, rice husk etc. are discarded can be made full use of, realize energy-saving and cost-reducing.But living beings moisture content is high, ash content large, can not reach the thermal efficiency same with fossil fuel.Document " design of biomass thermal wind furnace and application " (Industrial Boiler, 2010,6th phase) a kind of hot-blast stove adding hot-air is proposed, form by burner hearth, subsidiary combustion chamber, expansion chamber three regions the flue forcing flue gas Tortuous flow, flow of flue gas approach is oversize, and thermal loss is larger.
Summary of the invention
For the deficiencies in the prior art part, the object of the invention is to propose a kind of biomass thermal wind furnace.
Another object of the present invention is the method proposing this biomass thermal wind furnace of application.
The technical scheme realizing the object of the invention is:
A kind of biomass thermal wind furnace, comprise burner hearth and the burner hearth thermal treatment zone, a side walls of burner hearth is provided with fuel inlet, and lower furnace portion is provided with the first fixed type grate, is provided with combustion fan below fixed type grate; Bottom, the burner hearth thermal treatment zone is provided with the second fixed type grate, pure air heat exchanger is provided with above the burner hearth thermal treatment zone, the side of pure air heat exchanger is provided with the firebreak forcing flue gas to flow into below heat exchanger, and the opposite side of pure air heat exchanger is provided with exhanst gas outlet.
Separate with firebreak between burner hearth and the burner hearth thermal treatment zone, firebreak top does not contact furnace roof, force flue gas upwards to flow downward drawing under cigarette fan action, the application arranges firebreak again in the side of pure air heat exchanger again, forces flue gas to flow into below heat exchanger.
Biomass fuel improves with promoting hopper, sends into fuel inlet, to dropping on the first fixed type grate.
Further, described fuel inlet is provided with self-closing fire-screen door; Described first and second fixed type grates all have ash port.
Wherein, described pure air heat exchanger is tubular heat exchanger, and tube side is pure air passage, and pure air entrance is positioned at below tubular heat exchanger, and pure air inlet duct is provided with air blast.
Wherein, described exhanst gas outlet is connected with flue, flue is provided with in turn flue gas cyclone dust collectors, flue gas water dust scrubber, draws cigarette blower fan and chimney.
Combustion fan below this biomass thermal wind furnace is a small amount of air intake once, and hot blast transmission is main by drawing cigarette blower fan air inducing.
Preferably, described pure air heat exchanger top is provided with clean hot-blast outlet, described clean hot-blast outlet connects clean hot blast conveying pipe road, described pure air heat exchanger, clean hot blast conveying pipe road are stainless steel, clean hot blast conveying pipe road is coated with heat-insulation layer, and described heat-insulation layer is the industrial heat preservation rock wool of thickness 100 ~ 200mm.
Wherein, the air blast on described pure air inlet duct is stainless steel, and described air blast variable-frequency motor drives.
Pure air heat exchanger, hot blast efferent duct, clean air fan is made by stainless steel, with meet cold air add the hot blast in heat exchange and hot blast course of conveying cleaning and can be high temperature resistant.
Blower air quantity is by controlled frequency conversion electrical equipment regulable control, and this phase reaches after entered normal temperature pure air and heat exchanger heat fully exchange, and the heat exchange hot blast temperature gone out is not less than for the purpose of 50-150 DEG C.
The application of biomass thermal wind furnace of the present invention, it is applied to drying of granulating.
Applying the method for described biomass thermal wind furnace, take living beings as fuel, and burning produces flue gas, and temperature is, after the flue gas of 140 ~ 150 DEG C enters the burner hearth thermal treatment zone, enter, discharge above pure air heat exchanger below pure air heat exchanger; Pure air and flue gas downstream flowing, be heated to 50 ~ 150 DEG C.
Preferably, described fuel is corncob, peanut shell, rice husk, stalk, wood chip, bamboo bits, one or more in bagasse, and fuel is of a size of 2mm ~ 50mm, and the loss on drying of fuel is 10 ~ 15%.
More preferably, clean hot blast is the clean hot blast conveying pipe road of 10 ~ 25m by length, enters fluid bed granulator.
The length that hot blast efferent duct is connected with fluid bed granulator should be more short better, otherwise the long hot blast temperature hot blast temperature in warm-air pipe conveying that will increase of hot blast efferent duct declines, so design hot blast conveying pipe and Fluidbedgranulatingdrier connecting length should more than 25m.
The present invention has the following advantages:
The biomass hot air furnace structure that the present invention proposes is simple, and operative is convenient, and fire box temperature is easy to control, and the hot blast temperature produced through pure air heat exchanger fluctuates stable up and down.
The biomass thermal furnace system provided operates steadily, automaticity is higher, 2/3 manpower needed for original coal-fired steam boiler can be saved, compare with traditional coal-fired steam boiler Steam Heating technique, the thermal efficiency significantly improves, the Steam Heating supply boiling granulating dry-heat air production operation technique that this system breaks traditions, eliminates steam-heating apparatus.Production is continuous, hot blast temperature control stability is good, the stable and reliable product quality produced, and this system cost is cheaper with traditional coal-fired steam boiler, structure is simple, and for ease of maintenaince maintain, production run expense is lower, energy consumption declines more than 60%, can reach the object of energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is the structure chart of the biomass thermal wind furnace of the embodiment of the present invention 1.
Wherein, 1: biomass fuel elevator bucket; 2: the first fixed type grates; 3: ash port; 4: combustion fan; 5: burner hearth; 6: flue gas cyclone dust collectors; 7: flue gas water dust scrubber; 8: draw cigarette blower fan; 9: pure air heat exchanger; 10: clean air fan; 11: clean hot-blast outlet; 12: clean hot blast conveying pipe road; 13: self-closing fire-screen door.
Detailed description of the invention
Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
In embodiment, if no special instructions, method therefor and equipment are equipment and the method for this area routine.
Embodiment 1:
Fig. 1 shows the structural representation that the present embodiment biomass fuel hot air stove produces clean hot blast, this biomass thermal wind furnace comprises burner hearth 5 and the burner hearth thermal treatment zone, one side walls of burner hearth is provided with fuel inlet, lower furnace portion is provided with below the first fixed type grate 2, first fixed type grate 2 and is provided with combustion fan 4; Bottom, the burner hearth thermal treatment zone is provided with the second fixed type grate, pure air heat exchanger 9 is provided with above the burner hearth thermal treatment zone, the side of pure air heat exchanger 9 is provided with the firebreak forcing flue gas to flow into below heat exchanger, and the opposite side of pure air heat exchanger 9 is provided with exhanst gas outlet.Heat exchanger is tubular heat exchanger, tubulation diameter 57mm.Exhanst gas outlet is connected with flue, flue is provided with in turn flue gas cyclone dust collectors 6, flue gas water dust scrubber 7, draws cigarette blower fan 8 and chimney.Described fuel inlet is provided with self-closing fire-screen door 13; First and second fixed type grates all have ash port 3.
Wherein, described pure air heat exchanger 9 is tubular heat exchanger, tube side is pure air passage, pure air entrance is positioned at below tubular heat exchanger (be following current with flue gas), pure air inlet duct is provided with clean air fan 10, it is 304 stainless steels, and this air blast variable-frequency motor drives.
Pure air heat exchanger 9 top is provided with clean hot-blast outlet 11, it connects clean hot blast conveying pipe road 12, pure air heat exchanger, clean hot blast conveying pipe road 12 are 304 stainless steels, clean hot blast conveying pipe road is coated with heat-insulation layer, and heat-insulation layer is the industrial heat preservation rock wool of thickness 100mm.
Embodiment 2
The biomass thermal wind furnace of Application Example 1, biomass fuel elevator bucket 1 is provided for the biomass fuel burnt, and biomass fuel is graininess, and particle diameter is the corncob of 8-10mm, length 40mm.Described body of heater annex comprises flue gas cyclone dust collectors 6, flue gas water dust scrubber 7; for the dust arrester of the flue gas after the heat exchange of biomass thermal wind furnace; the object of device is the atmospheric emission standard making the flue gas entering air through drawing cigarette blower fan 8 through above-mentioned dust arrester reach environmental protection; accomplish not atmosphere pollution, free from environmental pollution.Biomass fuel is at burner hearth Thorough combustion, and at body of heater combustion fan 4 with under drawing the effect of cigarette blower fan 8 air inducing, burner hearth high-temperature flue-gas is 140-150 DEG C, and fully heats the tubulation shell of pure air heat exchanger.
Along described pure air tubular heat exchanger 9, in burner hearth, high-temperature flue gas is at combustion fan 4, draw high-temperature flue gas under the effect of cigarette blower fan 8 directly to heat pure air tubular heat exchanger shell and reach 140-150 DEG C, then clean air fan 10 is utilized to be heated by the tube side of clean cold air input pure air tubular heat exchanger 9 again, described clean air fan 10 adopts Frequency Adjustable motor to control the size of clean cold wind intake, to guarantee that last clean hot-blast outlet temperature is at 90 DEG C, and deliver into by warm-air pipe the granulation drying production that fluid bed granulator carries out coated vitamin C, hot blast conveying pipe and Fluidbedgranulatingdrier connecting length should more than 25m.
The present embodiment biomass hot air furnace structure is simple, and operative is convenient, and fire box temperature is easy to control, and the hot blast temperature produced through pure air heat exchanger fluctuates stable up and down.
Through knowhow for many years and as can be seen from above example; the biomass thermal furnace system that technique scheme provides operates steadily; automaticity is higher; 2/3 manpower needed for original coal-fired steam boiler can be saved; compare with traditional coal-fired steam boiler Steam Heating technique; the thermal efficiency significantly improves, and the Steam Heating supply fluid bed granulator dry-heat air production operation technique that this system breaks traditions, eliminates steam-heating apparatus.Production is continuous, hot blast temperature control stability is good, the stable and reliable product quality produced, this system investments cost is cheaper with traditional coal-fired steam boiler, structure is simple, for ease of maintenaince maintain, production run expense is lower, and energy consumption declines more than 60%, can reach the object of energy-saving and emission-reduction.
Embodiment 3
The biomass thermal wind furnace of Application Example 1, biomass fuel elevating hopper 1 is provided for the biomass fuel burnt, and biomass fuel is peanut shell.Biomass fuel is at burner hearth Thorough combustion, and at body of heater combustion fan 4 with under drawing the effect of cigarette blower fan 8 air inducing, burner hearth high-temperature flue-gas is 140 DEG C, and fully heats the tubulation shell of pure air heat exchanger.
Along described pure air tubular heat exchanger 9, in burner hearth, high-temperature flue gas is at combustion fan 4, draw high-temperature flue gas under the effect of cigarette blower fan 8 directly to heat pure air tubular heat exchanger shell and reach 140-150 DEG C, then again the tube side of clean cold air input pure air tubular heat exchanger 9 is heated in the described clean air fan 10 that utilizes, described clean air fan 10 adopts Frequency Adjustable motor to control the size of clean cold wind intake, to guarantee that last clean hot-blast outlet temperature is 80 DEG C, and deliver into by warm-air pipe the granulation drying production that fluid bed granulator carries out coated vitamin C, hot blast conveying pipe and Fluidbedgranulatingdrier connecting length are 25m.
Although content of the present invention has done detailed introduction by above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.For a person skilled in the art; under this patent design and specific embodiment enlightenment; some distortion that can directly derive from this patent disclosure and general knowledge or associate; those of ordinary skill in the art will recognize also can adopt additive method, or prior art is alternative, and the equivalence of feature changes or modifies; or the mutual various combination between feature; function and the effect of this patent description can be realized, illustrate no longer one by one, all belong to this patent protection domain.
Claims (10)
1. a biomass thermal wind furnace, comprises burner hearth and the burner hearth thermal treatment zone, it is characterized in that, a side walls of burner hearth is provided with fuel inlet, and lower furnace portion is provided with the first fixed type grate, is provided with combustion fan below fixed type grate; Bottom, the burner hearth thermal treatment zone is provided with the second fixed type grate, pure air heat exchanger is provided with above the burner hearth thermal treatment zone, the side of pure air heat exchanger is provided with the firebreak forcing flue gas to flow into below heat exchanger, and the opposite side of pure air heat exchanger is provided with exhanst gas outlet.
2. biomass thermal wind furnace according to claim 1, is characterized in that, described fuel inlet is provided with self-closing fire-screen door; Described first and second fixed type grates all have ash port.
3. biomass thermal wind furnace according to claim 1, it is characterized in that, described pure air heat exchanger is tubular heat exchanger, and tube side is pure air passage, pure air entrance is positioned at below tubular heat exchanger, and pure air inlet duct is provided with air blast.
4. biomass thermal wind furnace according to claim 1, is characterized in that, described exhanst gas outlet is connected with flue, flue is provided with in turn flue gas cyclone dust collectors, flue gas water dust scrubber, draws cigarette blower fan and chimney.
5. biomass thermal wind furnace according to claim 1, it is characterized in that, described pure air heat exchanger top is provided with clean hot-blast outlet, described clean hot-blast outlet connects clean hot blast conveying pipe road, described pure air heat exchanger, clean hot blast conveying pipe road are stainless steel, clean hot blast conveying pipe road is coated with heat-insulation layer, and described heat-insulation layer is the industrial heat preservation rock wool of thickness 100 ~ 200mm.
6. biomass thermal wind furnace according to claim 3, is characterized in that, the air blast on described pure air inlet duct is stainless steel, and described air blast variable-frequency motor drives.
7. the application of the arbitrary described biomass thermal wind furnace of claim 1 ~ 6, is characterized in that, is applied to drying of granulating.
8. application rights requires the method for 1 ~ 6 arbitrary described biomass thermal wind furnace, and it is characterized in that, take living beings as fuel, burning produces flue gas, temperature is, after 140 ~ 150 DEG C of flue gases enter the burner hearth thermal treatment zone, enter, discharge above pure air heat exchanger below pure air heat exchanger; Pure air and flue gas downstream flowing, be heated to 50-150 DEG C.
9. method according to claim 8, is characterized in that, described fuel is corncob, peanut shell, rice husk, stalk, wood chip, bamboo bits, one or more in bagasse, and fuel is of a size of 2mm ~ 50mm, and the loss on drying of fuel is 10 ~ 15%.
10. method according to claim 8, is characterized in that, clean hot blast is the clean hot blast conveying pipe road of 10 ~ 25m by length, enters fluid bed granulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201511005669.0A CN105444410A (en) | 2015-12-28 | 2015-12-28 | Biomass hot blast stove and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511005669.0A CN105444410A (en) | 2015-12-28 | 2015-12-28 | Biomass hot blast stove and application thereof |
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| CN105444410A true CN105444410A (en) | 2016-03-30 |
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| CN201511005669.0A Pending CN105444410A (en) | 2015-12-28 | 2015-12-28 | Biomass hot blast stove and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322370A (en) * | 2016-08-26 | 2017-01-11 | 河南科技大学 | Biomass burning device |
| CN106403280A (en) * | 2016-06-25 | 2017-02-15 | 五洲丰农业科技有限公司 | Fertilizer production process hot blast supply system using flue gas waste heat |
| CN109028569A (en) * | 2018-09-09 | 2018-12-18 | 无锡博众热能环保设备有限公司 | A kind of flue gas complete alternation hot-blast stove |
| CN109539548A (en) * | 2018-11-14 | 2019-03-29 | 江苏金满穗农业发展有限公司 | One kind is spurted the husk hot-blast stove that burns |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403280A (en) * | 2016-06-25 | 2017-02-15 | 五洲丰农业科技有限公司 | Fertilizer production process hot blast supply system using flue gas waste heat |
| CN106403280B (en) * | 2016-06-25 | 2021-09-28 | 五洲丰农业科技有限公司 | Utilize hot-blast feed system of fertilizer production technology of flue gas waste heat |
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| CN109028569A (en) * | 2018-09-09 | 2018-12-18 | 无锡博众热能环保设备有限公司 | A kind of flue gas complete alternation hot-blast stove |
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| CN109539548A (en) * | 2018-11-14 | 2019-03-29 | 江苏金满穗农业发展有限公司 | One kind is spurted the husk hot-blast stove that burns |
| CN109539548B (en) * | 2018-11-14 | 2020-11-27 | 江苏金满穗农业发展有限公司 | Spurting combustion chaff hot blast stove |
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Application publication date: 20160330 |
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