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CN111121001A - Biomass fuel formula semi-gasification combustion device - Google Patents

Biomass fuel formula semi-gasification combustion device Download PDF

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Publication number
CN111121001A
CN111121001A CN201911209096.1A CN201911209096A CN111121001A CN 111121001 A CN111121001 A CN 111121001A CN 201911209096 A CN201911209096 A CN 201911209096A CN 111121001 A CN111121001 A CN 111121001A
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biomass fuel
gasification
semi
combustion chamber
biomass
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CN201911209096.1A
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崔国民
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Yunnan Academy of Tobacco Agricultural Sciences
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Yunnan Academy of Tobacco Agricultural Sciences
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23BMETHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B90/00Combustion methods not related to a particular type of apparatus
    • F23B90/04Combustion methods not related to a particular type of apparatus including secondary combustion
    • F23B90/06Combustion methods not related to a particular type of apparatus including secondary combustion the primary combustion being a gasification or pyrolysis in a reductive atmosphere
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23BMETHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B10/00Combustion apparatus characterised by the combination of two or more combustion chambers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23BMETHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B50/00Combustion apparatus in which the fuel is fed into or through the combustion zone by gravity, e.g. from a fuel storage situated above the combustion zone
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K1/00Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N1/00Regulating fuel supply
    • F23N1/007Regulating fuel supply using mechanical means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00Feeding arrangements
    • F23K2203/10Supply line fittings
    • F23K2203/103Storage devices

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Solid-Fuel Combustion (AREA)

Abstract

The invention relates to a tobacco leaf modulating device for biomass fuel formula semi-gasification combustion, and belongs to the technical field of flue-cured tobacco modulating equipment. The technical key of the invention is as follows: the biomass fuel formula is subjected to semi-gasification combustion: mixing different biomass fuels to be combusted according to a certain proportion, feeding the mixed biomass fuels into a storage bin, carrying out semi-gasification at the temperature of 60-180 ℃, and then respectively combusting volatile gas and residues (mainly fixed carbon). The biomass fuel is the original ecological biomass fuel with irregular shape, and the length, width and height of the original ecological biomass fuel are less than or equal to 30 cm. The biomass fuel bin is positioned at the upper part of the solid combustion chamber in the device. The biomass volatile gas is connected with the two combustion chambers of the remainder (mainly fixed carbon). The gas combustion chamber is positioned at the position of the bottom 31 of the pipeline of the solid combustion chamber, wherein the flue gas flow firstly rises and then sinks. Compared with the existing biomass particle burner, the biomass particle burner has the advantages of low construction cost, low modulation cost, energy conservation and labor cost conservation, and is suitable for different types of intensive modulation equipment with metal radiating pipes.

Description

Biomass fuel formula semi-gasification combustion device
Technical Field
The invention relates to a biomass fuel formula semi-gasification combustion device, and belongs to the technical field of tobacco leaf modulation equipment.
Background
The biomass particle burner is widely applied to various heat supply fields such as boilers, industrial incineration, smelting, food processing, building materials, tobacco leaf modulation and the like. However, processing of biomass feedstock into a particulate state requires significant costs: firstly, the biomass raw materials need to be crushed, and then the raw materials are added with the formula and pressed into particles, so that the process is complex, labor and time are wasted, and the production cost is higher. At present, biomass fuels at home and abroad are mostly in particle shapes, and the particle biomass needs to be processed, so that the operation cost of heat supply combustion equipment is high.
Through the literature search, the same public reports as the invention are not found.
Disclosure of Invention
The invention aims to provide a biomass fuel formula semi-gasification combustion device with two combustion chambers, which can directly use original ecological biomass raw materials to semi-gasify the original ecological biomass raw materials, carries out two-time combustion (natural combustion of volatile gas and reburning of solid carbon on a grate) in the semi-gasification combustion device, directly uses the original ecological biomass fuel, can reduce the heat supply operation cost, and leads a bulk curing barn to popularize and apply the biomass materials in a larger range in China.
The biomass fuel formula semi-gasification combustion device is completed by the following structure: its characterized in that combustion apparatus that partly gasifies comprises feed bin (1), solid-state combustion chamber (2), gaseous state combustion chamber (3), radiator (4), ash hole/ventilation support passageway (5) and heat supply room (6), place in heat supply room (6) in feed bin (1), heat supply room (6) have accomplished biomass fuel's half gasification, the half gasification's of biomass fuel product when storing fuel: solid combustion substances and combustible gas enter the solid combustion chamber (2); the solid combustion object is fully combusted in the solid combustion chamber to form ash content which falls into an ash hole (5); the combustible gas is partially combusted in the solid combustion chamber, the rest part of the combustible gas is mixed with the smoke gas flow to enter the radiator (4), flows into the gas combustion chamber (3) through the pipeline, is fully combusted twice in the gas combustion chamber (3), then enters the radiator (4), and finally is discharged into the atmosphere through the chimney (7).
Two opening and closing hinge doors (8) are arranged at the bottom of the stock bin (1), and the opening and closing hinge doors (8) are respectively connected with herringbone suspension chains (9); the upper end of the sling chain (9) is connected with an automatically controlled stepping motor (10) to control the discharging speed of the stock bin (1).
The solid combustion chamber (2) is connected and communicated with the two combustion chambers of the gas combustion chamber (3).
The combustion point in the gas combustion chamber (3) is arranged at a first bottom position (31) of a sinking pipeline after the smoke gas flow of the solid combustion chamber (2) rises.
The silo (1) is used for carrying out a semi-gasification process at the temperature of 60-180 ℃, and then the generated volatile gas and the fixed carbon residues are respectively and completely combusted.
The biomass fuel is irregular in shape and is original ecological biomass fuel with the length, width and height being less than or equal to 30 cm.
The rated thermal power of the biomass fuel combustion device is 420000 kJ/h or 210000 kJ/h.
The semi-gasification combustion device is used for tobacco leaf modulation, or is used for tobacco leaf modulation in a bulk curing barn.
The technical key of the invention is as follows: (1) the biomass fuel formula is subjected to semi-gasification combustion: mixing different biomass fuels to be combusted according to a certain proportion, feeding the mixed biomass fuels into a storage bin, carrying out semi-gasification at the temperature of 60-180 ℃, and then respectively combusting volatile gas and residues (mainly fixed carbon). (2) The biomass fuel is the original ecological biomass fuel with irregular shape, and the length, width and height of the original ecological biomass fuel are less than or equal to 30 cm. (3) The biomass fuel bin is positioned at the upper part of the solid combustion chamber in the device. (4) The biomass volatile gas is connected with the two combustion chambers of the remainder (mainly fixed carbon). (5) The gas combustion chamber is positioned at the position of the bottom 31 of the pipeline of the solid combustion chamber, wherein the flue gas flow firstly rises and then sinks.
The invention adopts a structure that two combustion chambers are communicated with each other, so that the original ecological biomass fuel (such as straw, sawdust, bagasse, rice chaff and the like) does not need to be formed (such as blocks, particles and the like), is simply crushed or cut into small pieces, and can be directly used only by the shape of an irregular shape, the length, the width and the height of the irregular shape are less than or equal to 30 cm.
Description of the drawings:
FIG. 1 is a structural sectional view of the device of the present invention.
1-a storage bin, 2-a solid combustion chamber; 3-a gas combustion chamber; 31-combustion point, 4-radiator; 5-ash hole/ventilation feeding channel; 6-a heat supply chamber; 7, a chimney; 8, opening and closing the hinge door; 9-hanging chain; 10-a step motor, wherein the step motor is provided with a motor,
the specific implementation mode is as follows:
the actual biomass fuel formula semi-gasification combustion device is adopted for verification:
when the biomass fuel is used, the biomass fuel can be mixed according to a certain proportion according to different calorific values of biomass fuels to be combusted, and can also be controlled by controlling the wind speed of the fan.
The biomass fuel enters the bin 1, the bin gate of the feeding port is closed, partial biomass fuel firstly falls into the hearth of the solid combustion chamber 2 by controlling the opening and closing hinge door 8 at the bottom of the bin 1, then after the fire of the hearth of the solid combustion chamber 2 is ignited, the bottom fan is started simultaneously, the biomass fuel falling into the hearth of the solid combustion chamber 2 is firstly combusted, the combusted biomass fuel generates hot gas to rise and enters the bin 1, the biomass fuel in the bin 1 is smoldered under the anoxic state, small molecular substances in the biomass fuel in the bin 1 are gasified to form volatile combustible gas, the bin gate of the feeding port is sealed and closed, so the generated volatile combustible gas can only return to the solid combustion chamber 2 from the opening at the bottom of the bin 1 for the first combustion, and the residual volatile combustible gas which is not combusted enters the pipeline of the gas combustion chamber 3 from the side pipeline of the solid combustion chamber 2, carry out the postcombustion/ignition burning in 3 pipelines of gas combustion chamber, the residual material is solid carbon material fuel after 1 indoor gasification of feed bin, solid carbon material fuel falls into the grate top of solid combustion chamber 2 naturally after through the fire bars, continue the burning, the production heat also gets into radiator 4 from 2 lateral part pipelines of solid combustion chamber and carries out the heat exchange, in the pipeline of volatility gas combustion chamber 3, produce heat energy and become the hot-air through the fin of 3 pipeline outer walls of gas combustion chamber, the hot-air passes through the pipeline and gets into the flue-cured tobacco smoke house, it is dry to fresh tobacco leaf.
In addition, the heat released by the solid combustion chamber 2 provides a higher temperature environment for the gas combustion chamber 1, the opening at the bottom of the storage bin 1 is positioned at the upper part of the solid combustion chamber 2, so that biomass fuel in the storage bin is semi-gasified, volatile gas generated by semi-gasification is enabled to sink to the bottom of the storage bin 1, the volatile gas passes through the solid combustion chamber 2 to be combusted for the first time, the volatile gas which is not combusted is combusted for the second time, and the volatile gas is ensured to be completely combusted by the gas combustion chamber 3 of the side pipeline.
The combustion point in the gas combustion chamber is arranged at the bottom 31 of the first pipeline which is positioned at the position where the flue gas flow generated by the fixed carbon combustion chamber rises after going through the pipeline of the gas combustion chamber and sinks, and the ignition is easy to burn at the position.
Example 1: (for air-flow lifting horizontal type intensive curing barn heating)
When the tobacco leaf is prepared, different biomass fuels to be combusted are mixed in a storage bin according to a specific proportion, semi-gasification is carried out at the temperature of 60-180 ℃, and then volatile gas and residues (mainly fixed carbon) are combusted respectively. The biomass fuel is simply crushed or cut into small pieces, and can be put into a storage bin when the length, width and height of the biomass fuel in an irregular shape are less than or equal to 30 cm.
The rated thermal power of the biomass fuel combustion device is 420000 kJ/h.
The biomass fuel formula semi-gasification combustion device has the following construction cost: 10000.00 yuan/set; stable performance and high tobacco leaf quality.
And (3) modulation cost accounting: the remuneration of the modulating personnel is not counted, the fuel and electricity charge is modulated, the dry tobacco is 1.57 yuan/kg, compared with the modulating cost of 2.70 yuan/kg of dry tobacco in the large-area airflow ascending horizontal type intensive curing barn, the modulating cost is saved by 41.85%, and the economic benefit is very obvious.
The tobacco leaf modulation result is as follows: the color is golden yellow and orange, and the oil content is more; the middle-first grade smoke proportion is 94%; and (3) evaluating the smoking result of the expert on the tobacco leaves: the incense has the advantages of pure quality, sufficient amount of incense, rich smoke concentration, small irritation, moderate strength, light miscellaneous gas, good taste and high use value.
The verification process and results are shown in table 1:
TABLE 1 tobacco leaf modulating device for biomass fuel formula semi-gasification combustion
Verification process and result applied to airflow ascending type horizontal intensive curing barn
Figure DEST_PATH_IMAGE001
Example 2: (for air-flow descending horizontal type intensive curing barn heating)
The rated thermal power of the biomass fuel combustion device is 210000 kJ/h
Performance evaluation of a biomass fuel formula semi-gasification combustion device: stable performance and high tobacco leaf quality.
The tobacco leaf modulating device for biomass fuel formula semi-gasification combustion has the following construction cost: 10000.00 yuan/set.
And (3) modulation cost accounting: the remuneration of the modulating personnel is not counted, the fuel and electricity charge is modulated, the dry tobacco is 1.50 yuan/kg, compared with the modulating cost of 2.70 yuan/kg of dry tobacco in the large-area airflow ascending horizontal type intensive curing barn, the modulating cost is saved by 44.44%, and the economic benefit is very obvious.
The tobacco leaf modulation result is as follows: the color is golden yellow and orange, and the oil content is more; the middle-high grade smoke proportion is 97%; and (3) evaluating the smoking result of the expert on the tobacco leaves: the incense has the advantages of pure quality, sufficient amount of incense, rich smoke concentration, small irritation, moderate strength, light miscellaneous gas, good taste and high use value.
1100.00 yuan/ton of granular biomass fuel and 440.00 yuan/ton of original ecological biomass fuel in Yunnan province in 2019; the difference between the two is large. The invention realizes the application of the biomass fuel formula semi-gasification combustion device, and has the characteristics of low construction cost, low modulation cost, energy conservation and labor cost conservation.

Claims (8)

1. The utility model provides a biomass fuel formula semi-gasification burner which characterized in that semi-gasification burner comprises feed bin (1), solid-state combustion chamber (2), gaseous state combustion chamber (3), radiator (4), ash hole/ventilation support passageway (5) and heat supply room (6), place in heat supply room (6) in feed bin (1), heat supply room (6) have accomplished biomass fuel's semi-gasification, the half gasification's of biomass fuel product when storing fuel: solid combustion substances and combustible gas enter the solid combustion chamber (2); the solid combustion object is fully combusted in the solid combustion chamber to form ash content which falls into an ash hole (5); the combustible gas is partially combusted in the solid combustion chamber, the rest part of the combustible gas is mixed with the smoke gas flow to enter the radiator (4), flows into the gas combustion chamber (3) through the pipeline, is fully combusted twice in the gas combustion chamber (3), then enters the radiator (4), and finally is discharged into the atmosphere through the chimney (7).
2. The biomass fuel formula semi-gasification combustion device according to claim 1, characterized in that the bottom of the storage bin (1) is provided with two opening and closing hinge doors (8), and the opening and closing hinge doors (8) are respectively connected with a herringbone suspension chain (9); the upper end of the sling chain (9) is connected with an automatically controlled stepping motor (10) to control the discharging speed of the stock bin (1).
3. The tobacco leaf modulating device for the semi-gasification combustion of the biomass fuel formula according to the claim 1 is characterized in that the solid combustion chamber (2) is communicated with the gas combustion chamber (3).
4. The biomass fuel formulation semi-gasification combustion device according to claim 1, characterized in that the combustion point in the gas combustion chamber (3) is arranged at a first bottom position (31) of a sinking pipe after the flue gas flow of the solid combustion chamber (2) rises.
5. The biomass fuel formula semi-gasification combustion device according to claim 1, characterized in that the silo (1) is used for semi-gasification at 60-180 ℃, and then the produced volatile gas and the fixed carbon residue are respectively completely combusted.
6. The biomass fuel formulation semi-gasification combustion device of claim 1, wherein the biomass fuel is irregular in shape and is a raw biomass fuel with a length, width and height of less than or equal to 30 cm.
7. The biomass fuel formulation semi-gasification combustion device of claim 1, wherein the biomass fuel combustion device has a rated thermal power of 420000 kJ/h or 210000 kJ/h.
8. The biomass fuel formulation semi-gasification combustion device of claim 1, wherein the semi-gasification combustion device is used for tobacco leaf curing, or tobacco leaf curing in a bulk curing barn.
CN201911209096.1A 2019-11-30 2019-11-30 Biomass fuel formula semi-gasification combustion device Pending CN111121001A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1354220A (en) * 2000-11-22 2002-06-19 中国科学技术大学 Composite biomass gasification furnace and its gas preparation method
US20020174812A1 (en) * 2001-03-27 2002-11-28 Fuji Electric Co., Ltd. Method and apparatus for gasifying solid biomass fuel
CN201795475U (en) * 2010-05-28 2011-04-13 湖北和泰生物能源有限公司 Boiler burning biomass solid briquette fuel
CN202532454U (en) * 2012-04-01 2012-11-14 青岛多蒙特环保科技有限公司 Biomass gasification and combustion boiler device
CN104373929A (en) * 2014-11-10 2015-02-25 怀化市奇效节能科技有限公司 Double-hearth half-gasification smokeless combustion system
CN204224545U (en) * 2014-11-13 2015-03-25 孙德顺 Low-suction type organism-gasifying furnace
CN208821448U (en) * 2018-09-19 2019-05-07 江西正邦科技股份有限公司 A kind of simple and efficient feed feed opening closure door
CN110410773A (en) * 2019-08-05 2019-11-05 海伦市利民节能锅炉制造有限公司 Combined grate environmental protection industrial boiler with biomass direct combustion zone, stage and phase separation combustion
CN212178850U (en) * 2019-11-30 2020-12-18 云南省烟草农业科学研究院 Biomass fuel formula semi-gasification combustion device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1354220A (en) * 2000-11-22 2002-06-19 中国科学技术大学 Composite biomass gasification furnace and its gas preparation method
US20020174812A1 (en) * 2001-03-27 2002-11-28 Fuji Electric Co., Ltd. Method and apparatus for gasifying solid biomass fuel
CN201795475U (en) * 2010-05-28 2011-04-13 湖北和泰生物能源有限公司 Boiler burning biomass solid briquette fuel
CN202532454U (en) * 2012-04-01 2012-11-14 青岛多蒙特环保科技有限公司 Biomass gasification and combustion boiler device
CN104373929A (en) * 2014-11-10 2015-02-25 怀化市奇效节能科技有限公司 Double-hearth half-gasification smokeless combustion system
CN204224545U (en) * 2014-11-13 2015-03-25 孙德顺 Low-suction type organism-gasifying furnace
CN208821448U (en) * 2018-09-19 2019-05-07 江西正邦科技股份有限公司 A kind of simple and efficient feed feed opening closure door
CN110410773A (en) * 2019-08-05 2019-11-05 海伦市利民节能锅炉制造有限公司 Combined grate environmental protection industrial boiler with biomass direct combustion zone, stage and phase separation combustion
CN212178850U (en) * 2019-11-30 2020-12-18 云南省烟草农业科学研究院 Biomass fuel formula semi-gasification combustion device

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