CN112413568A - Biomass fuel combustor based on kiln - Google Patents
Biomass fuel combustor based on kiln Download PDFInfo
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- CN112413568A CN112413568A CN202011229498.0A CN202011229498A CN112413568A CN 112413568 A CN112413568 A CN 112413568A CN 202011229498 A CN202011229498 A CN 202011229498A CN 112413568 A CN112413568 A CN 112413568A
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- Prior art keywords
- kiln
- opening
- fuel
- combustion
- biomass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B40/00—Combustion apparatus with driven means for feeding fuel into the combustion chamber
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
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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)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a biomass fuel burner based on a kiln, which comprises the kiln and also comprises: the material box is used for temporarily storing biomass particles; a fuel transfer mechanism for receiving and transferring biomass particles from the bin; the fuel pushing mechanism is used for receiving the biomass particles from the fuel transferring mechanism and pushing the biomass particles to the material spraying opening; and the air supply and boosting mechanism is used for introducing combustion-supporting gas, pressurizing the combustion-supporting gas and feeding the combustion-supporting gas into the material spraying opening, and enabling the combustion-supporting gas and biomass particles pushed by the fuel pushing mechanism to jointly enter the kiln through the nozzle. Compared with the prior art, the biomass fuel has stable combustion, good running state and high heat efficiency of the kiln; the biomass fuel is used as the external fuel of the kiln, is an ideal fuel for replacing natural gas, liquefied petroleum gas, electricity, coal and the like, has wide application prospect, and has good social benefit, economic benefit and environmental benefit.
Description
Technical Field
The invention relates to a biomass fuel burner based on a kiln.
Background
At present, all countries in the world, especially developed countries, are dedicated to developing efficient and pollution-free biomass energy utilization technology so as to achieve the purposes of protecting mineral resources, guaranteeing national energy safety, realizing CO2 emission reduction and protecting national economic sustainable development. As a developing big country, China has abundant biomass resources and application markets which are being developed, develops and utilizes a large amount of biomass energy as soon as possible, is beneficial to strategic adjustment of the country and industry, and is one of important ways for building a conservation-oriented society and developing circular economy. In recent years, China has developed a series of energy-saving and emission-reducing policies for encouraging development of novel materials and comprehensive utilization of resources, green, environment-friendly, economic cycle and low-carbon development are the directions of future development, industrial solid wastes, mineral tailings, sludge, agricultural and forestry wastes and the like are encouraged to replace primary energy, the comprehensive utilization range of resources is further expanded, the consumption of natural energy is reduced, biomass is a high-quality material of green novel fuels with good performance, and the biomass is an indispensable resource for future economic development.
The biomass fuel is a renewable carbon source and has the characteristics of large yield, wide distribution, low sulfur, low nitrogen, quick growth and low CO2 emission. The biomass fuel combustion is mainly controlled by the following conditions:
a certain temperature;
a quantity of air (oxygen);
the degree of mixing of the fuel with the air (oxygen);
the time during which the combustibles in the fuel undergo a vigorous chemical reaction with the oxygen in the air.
The ignition temperature of the biomass fuel is 250-400 ℃ lower than that of coal (the ignition temperature of coal is 400-500 ℃), and the temperature is increased by ignition heat. The combustion process of biomass fuel is a process in which volatile components and combustible components are strongly combined with oxygen in the air and heat is released, and thus the supply amount of oxygen determines the process of combustion reaction. By controlling the oxygen supply amount, the combustion reaction can be well controlled. If the existing industrial kiln is directly used without modification, the kiln can seriously smoke, has low efficiency, dust pollution and the like.
Disclosure of Invention
The invention provides a biomass fuel burner based on a kiln, which is characterized in that a special secondary air supply device is additionally arranged to enhance oxygen inlet, so that the biomass fuel burner can be fully combusted, the temperature of a hearth is effectively increased, and the emission of carbon monoxide and smoke dust and the loss of heat are reduced.
The technical scheme of the invention is as follows:
a biomass fuel combustor based on kiln, includes the kiln, still includes:
the material box is used for temporarily storing biomass particles;
a fuel transfer mechanism for receiving and transferring biomass particles from the bin;
the fuel pushing mechanism is used for receiving the biomass particles from the fuel transferring mechanism and pushing the biomass particles to the material spraying opening;
and the air supply and boosting mechanism is used for introducing combustion-supporting gas, pressurizing the combustion-supporting gas and feeding the combustion-supporting gas into the material spraying opening, and enabling the combustion-supporting gas and biomass particles pushed by the fuel pushing mechanism to jointly enter the kiln through the nozzle.
Preferably, the fuel transfer mechanism includes conveyor assembly and conveyer belt motor, the feed opening has been seted up to the workbin bottom, conveyor assembly is located the feed opening below, conveyor assembly's end is corresponding to fuel push mechanism's receiving terminal intercommunication.
Preferably, the fuel pushing mechanism comprises a discharging box, a discharging port opening and closing cover and an opening and closing cover driving assembly, the discharging box serves as a receiving end of the fuel pushing mechanism, and the discharging port opening and closing cover is arranged on the bottom surface of the discharging box and located above the spraying port; the opening and closing cover driving assembly is used for driving the opening and closing cover of the discharge port to open/close.
Preferably, the cover opening and closing driving assembly comprises a link mechanism, the link mechanism is vertically arranged in the discharge box, and the link mechanism is used for opening/closing the discharge port opening and closing cover.
Preferably, the discharge box is positioned on the side face of the material box, and the discharge port opening and closing cover is closer to the spray port relative to the air supply and boosting mechanism.
Preferably, the air supply and boosting mechanism comprises a fan and an air collecting box, the fan sends combustion-supporting gas into the air collecting box, the lower end of the air collecting box is communicated with the material spraying opening, the combustion-supporting gas is sent into the material spraying opening through negative pressure, and biomass particles at the material spraying opening are sent into the kiln through the nozzle.
Preferably, the spout mouth is horn-shaped, the nozzle corresponds to the small end of the spout mouth, the lower end of the air collecting box and the discharge port opening and closing cover correspond to the large end of the spout mouth together, and the lower end of the air collecting box is far away from the spout mouth relative to the discharge port opening and closing cover.
Preferably, a material level meter is arranged at the middle lower part of the material box.
Preferably, the feed box and the fuel transfer mechanism are integrally arranged on the same support frame.
Preferably, the receiving end of the bin is further provided with an automatic feeding system.
The invention has the following advantages:
the air supply and boosting mechanism is used for introducing combustion-supporting gas, pressurizing the combustion-supporting gas and feeding the combustion-supporting gas into the material spraying opening, and the combustion-supporting gas and biomass particles pushed by the fuel pushing mechanism enter the kiln through the nozzle together, so that the biomass fuel is stable in combustion, good in running state and high in heat efficiency of the kiln; the invention can change the prior combustion mode, so that the discharge amount of sulfur dioxide, smoke dust and nitrogen oxide is small, the burnout rate of combustion is higher than that of coal, and the slag discharge amount is small;
furthermore, the biomass fuel is a renewable energy product, which is beneficial to energy conservation and environmental protection; in addition, the biomass fuel is used as the fuel outside the kiln, is an ideal fuel for replacing natural gas, liquefied petroleum gas, electricity, coal and the like, has wide use prospect, and has good social benefit, economic benefit and environmental benefit.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of the present invention.
The numbers in the figures illustrate the following:
1-material box, 2-material level meter, 3-conveyer motor, 4-conveyer belt component, 5-support frame, 6-biomass fuel, 7-material discharging box, 8-fan, 9-link mechanism, 10-air collecting box, 11-material discharging opening and closing cover, 12-material spraying opening, 13-nozzle, 14-kiln.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The invention is further described in detail below with reference to the figures and examples.
Fig. 1 is a schematic structural diagram of the present invention, as shown in fig. 1: a kiln-based biomass fuel burner, comprising a kiln 14, further comprising: the material box 1 is used for temporarily storing biomass particles; a fuel transfer mechanism for receiving and transferring biomass particles from the bin; the fuel pushing mechanism is used for receiving the biomass particles from the fuel transferring mechanism and pushing the biomass particles to the material spraying opening; and the air supply and boosting mechanism is used for introducing combustion-supporting gas, pressurizing the combustion-supporting gas and feeding the combustion-supporting gas into the material spraying opening 12, and enabling the combustion-supporting gas and biomass particles pushed by the fuel pushing mechanism to jointly enter the kiln 14 through the nozzle 13.
It should be noted that the combustion-supporting gas is usually oxygen, that is, oxygen-enriched combustion can be performed, and combustion-supporting oxygen enrichment and an increase in the amount of combustion-supporting gas can be adopted, so as to increase the complete combustion rate.
The fuel transfer mechanism comprises a conveyor belt component 4 and a conveyor belt motor 3, a feed opening is formed in the bottom of the material box 1, the conveyor belt component 4 is located below the feed opening, and the tail end of the conveyor belt component 4 is communicated with a receiving end of the fuel pushing mechanism corresponding to the receiving end; the middle lower part of the feed box 1 is provided with a material level meter 2, the feed box 1 and the fuel transfer mechanism are integrally arranged on the same supporting frame 5, and the receiving end of the feed box 1 is also provided with an automatic feeding system.
The fuel pushing mechanism comprises a discharging box 7, a discharging port opening and closing cover 11 and an opening and closing cover driving assembly, the discharging box 7 serves as a receiving end of the fuel pushing mechanism, and the discharging port opening and closing cover 11 is arranged on the bottom surface of the discharging box 7 and located above the spraying port 12; the opening and closing cover driving assembly is used for driving the opening and closing cover 11 of the discharge port to open/close.
The cover opening and closing driving assembly comprises a connecting rod mechanism 9, the connecting rod mechanism 9 is vertically arranged in the discharging box 7, and the connecting rod mechanism 9 is used for opening/closing the discharging opening and closing cover 11.
The connecting rod mechanism can be an electric connecting rod mechanism or a pneumatic connecting rod mechanism, so that the connecting rod mechanism is provided with energy to open or close the discharge hole opening and closing cover.
The discharging box 7 is positioned on the side surface of the material box 1, and the discharging opening and closing cover 11 is closer to the spraying opening 12 relative to the air supply and boosting mechanism.
Air supply and boosting mechanism include fan 8 and collection wind box 10, fan 8 sends combustion-supporting gas into collection wind box 10, collection wind box 10 the lower extreme with spout 12 intercommunication, send combustion-supporting gas into spout 12 through the negative pressure to send into the biomass particles of spout 12 department through nozzle 13 in the lump kiln 14.
It should be noted that the air collecting box sends the combustion-supporting gas into the injection port through negative pressure, and a cylinder compression mode can also be adopted, and the combustion-supporting gas can be sent into the injection port as much as possible in this mode, so that the biomass fuel is completely combusted. The fan may be a centrifugal fan, a smoke exhaust fan, etc., including but not limited to these.
The spout 12 is the horn shape, and nozzle 13 corresponds to the tip of spout 12, and the lower extreme of collection bellows 10 and discharge gate open and shut lid 11 correspond to the main aspects of spout 12 jointly, the lower extreme of collection bellows 10 is kept away from for discharge gate open and shut lid 11 spout 12.
When the biomass particle feeding device works, the biomass particles are used as fuel outside a kiln, the biomass particles are fed into the material box through the automatic feeding system, the biomass particles are fed into the material box through the conveying belt at the bottom of the material box, the discharge port opening and closing cover distributed at the lower part of the material box is opened through the connecting rod mechanism, the biomass fuel enters the spraying port from the discharge port, meanwhile, the fan sends air into the spraying port through the air collecting box, and the biomass particles at the spraying port are fed into the hearth of the kiln through the nozzle for combustion.
The invention can also mainly adopt a control system to automatically operate, adopts PLC control, and can adjust the biomass fuel feeding quantity and the air quantity required by combustion within a certain range.
In conclusion, the biomass fuel is stable in combustion, good in running state and high in heat efficiency of the kiln; the prior combustion mode is changed, the discharge amount of sulfur dioxide, smoke dust and nitrogen oxides is small, the burnout rate of combustion is higher than that of coal, and the slag discharge amount is small; the biomass fuel is a renewable energy product, and is beneficial to the implementation of national energy structure adjustment and energy-saving and environment-friendly policies. The biomass fuel is used as the external fuel of the kiln, is an ideal fuel for replacing natural gas, liquefied petroleum gas, electricity, coal and the like, has wide application prospect, and has good social benefit, economic benefit and environmental benefit.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A kiln-based biomass fuel burner comprising a kiln (14), characterized by further comprising:
the material box (1) is used for temporarily storing biomass particles;
a fuel transfer mechanism for receiving and transferring biomass particles from the bin;
the fuel pushing mechanism is used for receiving the biomass particles from the fuel transferring mechanism and pushing the biomass particles to the material spraying opening;
and the air supply and boosting mechanism is used for introducing combustion-supporting gas, pressurizing the combustion-supporting gas and feeding the combustion-supporting gas into the material spraying opening (12), and feeding the combustion-supporting gas and biomass particles pushed by the fuel pushing mechanism into the kiln (14) through the nozzle (13).
2. The biomass fuel burner based on the kiln as recited in claim 1, wherein the fuel transfer mechanism comprises a conveyor belt assembly (4) and a conveyor belt motor (3), a feed opening is formed in the bottom of the bin (1), the conveyor belt assembly (4) is located below the feed opening, and the tail end of the conveyor belt assembly (4) is communicated with a receiving end corresponding to the fuel pushing mechanism.
3. The kiln-based biomass fuel burner as defined in claim 2, wherein the fuel pushing mechanism comprises a discharging box (7), a discharging opening and closing cover (11) and an opening and closing cover driving assembly, the discharging box (7) is used as a receiving end of the fuel pushing mechanism, and the discharging opening and closing cover (11) is arranged on the bottom surface of the discharging box (7) and is positioned above the spraying opening (12); the opening and closing cover driving assembly is used for driving the opening and closing cover (11) of the discharge port to open/close.
4. The kiln-based biomass fuel burner of claim 3, characterized in that the opening and closing cover drive assembly comprises a linkage mechanism (9), the linkage mechanism (9) being vertically disposed within the discharge bin (7), the linkage mechanism (9) being used for opening/closing the discharge opening and closing cover (11).
5. The kiln-based biomass fuel burner of claim 3 or 4, characterized in that the discharge box (7) is located at the side of the feed box (1), and the discharge opening/closing cover (11) is located closer to the injection opening (12) than the air blowing and boosting mechanism.
6. The kiln-based biomass fuel burner of claim 3, characterized in that the air supply and boosting mechanism comprises a fan (8) and an air collecting box (10), wherein the fan (8) supplies combustion-supporting gas into the air collecting box (10), the lower end of the air collecting box (10) is communicated with the injection port (12), the combustion-supporting gas is supplied into the injection port (12) through negative pressure, and biomass particles at the injection port (12) are supplied into the kiln (14) through the nozzle (13).
7. The kiln-based biomass fuel burner of claim 6, characterized in that the injection opening (12) is in the shape of a horn, the nozzle (13) corresponds to the small end of the injection opening (12), the lower end of the air collection box (10) and the discharge opening and closing cover (11) together correspond to the large end of the injection opening (12), and the lower end of the air collection box (10) is far away from the injection opening (12) relative to the discharge opening and closing cover (11).
8. The kiln based biomass fuel burner of claim 1, characterized in that a level gauge (2) is provided in the middle lower part of the bin (1).
9. The kiln-based biomass fuel burner of claim 1, characterized in that the bin (1) and the fuel transfer mechanism are integrally mounted on the same support frame (5).
10. The kiln-based biomass fuel burner of claim 1, characterized in that the receiving end of the bin (1) is further provided with an automatic feeding system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011229498.0A CN112413568A (en) | 2020-11-06 | 2020-11-06 | Biomass fuel combustor based on kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011229498.0A CN112413568A (en) | 2020-11-06 | 2020-11-06 | Biomass fuel combustor based on kiln |
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| Publication Number | Publication Date |
|---|---|
| CN112413568A true CN112413568A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011229498.0A Pending CN112413568A (en) | 2020-11-06 | 2020-11-06 | Biomass fuel combustor based on kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114644950A (en) * | 2022-04-20 | 2022-06-21 | 贵州黔众创新科技有限公司 | Method for replacing traditional energy sources by biomass particles on rotary kiln in internal combustion mode |
-
2020
- 2020-11-06 CN CN202011229498.0A patent/CN112413568A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114644950A (en) * | 2022-04-20 | 2022-06-21 | 贵州黔众创新科技有限公司 | Method for replacing traditional energy sources by biomass particles on rotary kiln in internal combustion mode |
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