CN220648257U - Online pulverized coal adjustable micro-oil ignition and stable combustion device - Google Patents
Online pulverized coal adjustable micro-oil ignition and stable combustion device Download PDFInfo
- Publication number
- CN220648257U CN220648257U CN202320141030.9U CN202320141030U CN220648257U CN 220648257 U CN220648257 U CN 220648257U CN 202320141030 U CN202320141030 U CN 202320141030U CN 220648257 U CN220648257 U CN 220648257U
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- burner body
- combustion
- pulverized coal
- oil
- adjusting part
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 55
- 239000003245 coal Substances 0.000 title claims abstract description 41
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 239000003921 oil Substances 0.000 description 37
- 239000002817 coal dust Substances 0.000 description 10
- 238000004891 communication Methods 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004094 preconcentration Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
The utility model discloses an on-line pulverized coal adjustable micro-oil ignition and stable combustion device, which comprises a burner body; an adjusting part is arranged at one end in the burner body, and the adjusting part can adjust the quantity of combustion medium entering the burner body; a precombustion part arranged in the burner body and adjacent to the adjusting part; and a nozzle part arranged at the other end in the burner body. By the device, the quantity of the combustion medium entering the burner can be adjusted, so that the load adaptability of the boiler is improved, and the ignition and low-load oil consumption are reduced.
Description
Technical Field
The utility model relates to the technical field of boiler combustion, in particular to an on-line pulverized coal adjustable micro-oil ignition and stable combustion device.
Background
The average human recovery of Chinese petroleum is only 8% of the world average value. 2.6 hundred million tons of crude oil are consumed in China in 2003, wherein the crude oil comprises 9000 ten thousand tons of pure import, and the dependence of petroleum consumption in China on foreign countries is up to 47.3 percent at present. According to International Energy Agency (IEA) predictions: in the primary energy consumption in China 2020, the petroleum is 5 hundred million tons, the self-production of China is 1 hundred million tons, and 4 hundred million tons are required to be imported, which accounts for 25% of world trade in 1998. In the year 2013, the installed capacity of the national power generation is about 12.3 hundred million kilowatts, wherein 8.6 hundred million kilowatts of thermal power accounts for 69.9%, the initial statistics total consumption of oil is about 3000 ten thousand tons, the ignition starting and stable combustion oil of the boiler is about 1425 ten thousand tons, and the ignition and stable combustion oil continuously and rapidly increases along with the successive operation of a new unit. In addition, along with the rapid increase of international energy demand, the price of crude oil rises rapidly, and the exploitation of the fuel-saving potential of the coal-fired unit, the energy conservation and the consumption reduction become urgent matters of the thermal power unit in China at present.
At present, the ignition of the boiler mainly comprises the modes of traditional large oil gun ignition, plasma ignition, micro oil ignition and the like. The large oil consumption of the traditional large oil gun is gradually eliminated; the applicability of the plasma ignition coal is poor, the investment cost is high, and the method can not be widely popularized; the micro-oil ignition mode has relatively wide adaptability to coal types and has been widely applied to coal-fired power stations.
In the prior art, a fixed pulverized coal preconcentration micro-oil ignition technology is generally adopted in a micro-oil ignition mode, and the pulverized coal concentration of a precombustion chamber in the technology is fixed and cannot be adjusted on line. The concentration of the pulverized coal entering the precombustion chamber is deviated, and the combustion condition of the burner is deviated to a certain extent, so that the concentration of the pulverized coal in the precombustion chamber cannot be maintained in the most ignition range. Finally, the adaptability of the boiler load is reduced, the ignition and low-load oil consumption are increased, and the resource waste is caused.
Therefore, how to provide an on-line pulverized coal adjustable micro-oil ignition and combustion stabilizing device to improve the load adaptability of a boiler and reduce ignition and low-load oil consumption is a technical problem to be solved by the technicians in the field.
Disclosure of Invention
The utility model provides an on-line pulverized coal adjustable micro-oil ignition and stable combustion device, which aims to solve the technical problems that in the prior art, the pulverized coal concentration of a precombustor is fixed and cannot be adjusted on line, so that the load adaptability of a boiler is reduced, the ignition and low-load oil consumption are increased and the resource waste is caused.
The utility model provides an on-line pulverized coal adjustable micro-oil ignition and combustion stabilizing device, which comprises a burner body; an adjusting part is arranged at one end in the burner body, and the adjusting part can adjust the quantity of combustion medium entering the burner body; a precombustion part arranged in the burner body and adjacent to the adjusting part; and a nozzle part arranged at the other end in the burner body.
In some embodiments, the burner further comprises an inlet portion provided at one end of the burner body and before the adjustment portion.
In some embodiments, the inlet portion is configured to be trapezoidal in shape.
In some embodiments, the adjusting part comprises a fixed shaft, and the fixed shafts are adjacently arranged at the inlet part and symmetrically arranged; the stop block is movably arranged on the fixed shaft.
In some embodiments, the stop is movable at an angle of 0-30 ° to the axial direction of the stationary shaft.
In some embodiments, the precombustion portion includes a primary precombustion chamber disposed adjacent to the conditioning portion; the second-stage precombustion chamber is adjacently arranged at the outlet of the first-stage precombustion chamber; an oil combustion cylinder, one end of which is communicated with the primary precombustion chamber; the other end extends outside the burner body.
In some embodiments, the jet section is disposed adjacent and in communication with an outlet of the secondary prechamber.
In some embodiments, the primary prechamber, the secondary prechamber, and the nozzle are each connected to the burner body by a web.
In some of these embodiments, the oil burner cartridge is welded to the primary prechamber.
In some embodiments, the burner further comprises a control part connected with the adjusting part for controlling the adjusting part to adjust the amount of the combustion medium entering the burner body.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model discloses an on-line pulverized coal adjustable micro-oil ignition and stable combustion device, which comprises a burner body; an adjusting part is arranged at one end in the burner body, and the adjusting part can adjust the quantity of combustion medium entering the burner body; a precombustion part arranged in the burner body and adjacent to the adjusting part; and a nozzle part arranged at the other end in the burner body. By the device, the quantity of the combustion medium entering the burner can be adjusted, so that the load adaptability of the boiler is improved, and the ignition and low-load oil consumption are reduced.
Drawings
FIG. 1 is a schematic diagram of some embodiments of an on-line pulverized coal adjustable micro-oil ignition and combustion stabilization device according to the present utility model;
in the attached drawings, 1, a burner body; 2. a stop block; 3. a fixed shaft; 4. a primary precombustion chamber; 5. a secondary precombustion chamber; 6. an oil combustion cylinder; 7. a spout portion; 8. connecting rib plates; 9. an inlet portion.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "top," "bottom," "inner," "outer," "axis," "circumferential," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model or simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "engaged," "hinged," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1, an on-line pulverized coal adjustable micro-oil ignition and combustion stabilizing device comprises a burner body 1; one end in the burner body 1 is provided with an adjusting part, and the adjusting part can adjust the quantity of combustion medium entering the burner body 1; a precombustion part which is arranged in the burner body 1 and adjacent to the adjusting part; the nozzle 7 is provided at the other end in the burner body 1.
Specifically, the apparatus in the present embodiment includes a burner body 1 and an adjusting portion, a precombustion portion and a nozzle portion 7 provided in the burner body 1. The adjusting part is arranged at one end in the burner body 1, the precombustion part is adjacently arranged at the adjusting part, and the nozzle part 7 is arranged at the other end of the burner body 1.
In some of these applications, after entering the burner body 1, the combustion medium is adjusted by the adjusting part, and then the entering combustion medium enters the precombustion part for combustion, and finally the flame of the combustion medium air flow is ejected out through the nozzle part 7 and enters the hearth.
It can be understood that the combustion medium is pulverized coal, and the amount of the pulverized coal entering the precombustion part is regulated by the regulating part, so that the concentration of the pulverized coal entering the precombustion part is kept consistent, the combustion condition of the burner is consistent, and the concentration of the pulverized coal in the precombustion part is kept in the most ignition range. Finally, the load adaptability of the boiler is improved, the ignition and low-load oil consumption are reduced, and the resources are effectively saved.
In some embodiments of the utility model, an inlet portion 9 is further included, provided at one end of the burner body 1 and before the adjustment portion.
Specifically, in this embodiment, an inlet 9 is provided at one end of the burner body 1, and the inlet 9 is provided before the adjustment portion.
In some of these applications, the pulverized coal and air can be introduced into the pre-combustion part through the inlet part 9, and the amount of pulverized coal introduced into the pre-combustion part can be adjusted by the adjusting part before entering the pre-combustion part.
It will be appreciated that by providing the inlet portion 9 at one end of the burner body 1, coal dust and air can be efficiently conveyed to the pre-combustion portion.
In some embodiments of the utility model, the inlet portion 9 is shaped as a trapezoid.
Specifically, the inlet portion 9 is provided in a trapezoid shape in this embodiment.
In some applications, as the two sides of the trapezoid are inclined towards the center, the entering of part of coal dust and air can be limited, and then the limited coal dust and air further pass through the adjusting part to be adjusted, so that the concentration of the coal dust entering the precombustion part is further controllable.
It will be appreciated that the inlet portion 9 is configured to be trapezoidal, on the one hand, to limit the coal dust and air entering the burner body 1, and on the other hand, to cooperate with the adjustment portion, so as to further control the concentration of the coal dust entering the pre-combustion portion.
In some embodiments of the utility model, the adjusting part comprises a fixed shaft 3, which is adjacently arranged at the inlet part 9 and the fixed shaft 3 is symmetrically arranged; the stop block 2 is movably arranged on the fixed shaft 3.
Specifically, the adjusting portion in this embodiment includes a fixed shaft 3 and a stopper 2, the fixed shaft 3 is adjacently disposed at the inlet portion 9 and symmetrically disposed, and the stopper 2 is movably disposed on the fixed shaft 3.
In some applications, the fixed shafts 3 are arranged adjacent to the inlet part 9, the fixed shafts 3 are symmetrically arranged, the fixed shafts 3 are movably provided with the stop blocks 2, and when coal dust enters from the inlet part 9, the concentration of the coal dust entering the precombustion part can be controlled through the stop blocks 2 movably arranged on the fixed shafts 3.
It can be appreciated that the concentration of the pulverized coal entering the precombustion part can be effectively controlled by the stop block 2 movably arranged on the fixed shaft 3.
In some embodiments of the utility model, the stop 2 is movable through an angle of 0-30 ° relative to the axial direction of the fixed shaft 3.
Specifically, the movable angle of the stop block 2 in the embodiment is 0-30 DEG in the axial direction of the fixed shaft 3
In some of the applications, when the pulverized coal enters the inlet part 9, the movable angle of the stop block 2 is 0-30 degrees in the axial direction of the fixed shaft 3, so that the pulverized coal can be effectively limited, and the concentration of the pulverized coal entering the precombustion part is controlled.
It is understood that the movable angle of the stop block 2 is 0-30 degrees in the axial direction of the fixed shaft 3, so that the concentration of the coal dust entering the precombustion part can be further controlled.
In some embodiments of the utility model, the precombustion part comprises a primary precombustion chamber 4, adjacently arranged in the conditioning part; a secondary precombustor 5 disposed adjacent to the outlet of the primary precombustor 4; an oil combustion cylinder 6, one end of which is communicated with the primary precombustion chamber 4; the other end extends outside the burner body 1.
Specifically, the precombustion part in this embodiment includes first-stage precombustion chamber 4, second-stage precombustion chamber 5 and oil combustion cylinder 6, and first-stage precombustion chamber 4 is adjacent to be set up at the regulating part, and second-stage precombustion chamber 5 is adjacent to be set up in the export of first-stage precombustion chamber 4, and oil combustion cylinder 6, one end intercommunication first-stage precombustion chamber 4, the other end extends outside the combustor body 1.
In some of the applications, the pulverized coal and air entering the precombustion part enter the secondary precombustion chamber 5 from the flame of the oil and coal burnt by the primary precombustion chamber 4 after being ignited by the oil combustion cylinder 6, and then the pulverized coal airflow entering the secondary coal precombustion chamber is ignited; in each stage of combustion chamber after the stage-by-stage ignition, the flame of the pulverized coal airflow finally combusted is sprayed into the hearth through the nozzle part 7.
It will be appreciated that the primary and secondary pre-chambers 4, 5 are provided to progressively ignite and progressively burn the coal fines, resulting in progressively greater energy.
In some embodiments of the utility model, the nozzle 7 is arranged adjacent and in communication with the outlet of the secondary prechamber 5.
Specifically, the nozzle portion 7 in the present embodiment is disposed adjacent to and in communication with the outlet of the secondary prechamber 5.
In some of the applications, the pulverized coal airflow flame with amplified combustion energy passes through the outlet of the secondary precombustor 5 and then is sprayed into the hearth through the nozzle 7.
In some embodiments of the utility model, the primary prechamber 4, the secondary prechamber 5 and the nozzle 7 are connected to the burner body 1 by means of webs, respectively.
Specifically, the primary prechamber 4, the secondary prechamber 5, and the nozzle 7 in this embodiment are connected to the burner body 1 by connecting plates, respectively.
It will be appreciated that the connection of the primary prechamber 4, the secondary prechamber 5 and the nozzle 7 to the burner body 1 can be made more secure by the web.
In some embodiments of the utility model, the oil burner 6 is welded to the primary prechamber 4.
Specifically, the oil burner 6 is welded to the primary prechamber 4 in this embodiment.
It will be appreciated that by welding the oil burner 6 to the primary prechamber 4, a more secure communication of the oil burner 6 with the primary prechamber 4 is possible.
In some embodiments of the utility model, the burner further comprises a control part connected with the adjusting part for controlling the adjusting part to adjust the amount of the combustion medium entering the burner body 1.
Specifically, the control section in this embodiment is connected to the adjustment section.
In some of the applications, the control part can control the adjusting part to move so as to freely control the concentration of the coal dust entering the precombustion part.
It is understood that the control part may be an operation table or a control room switch, and any device that can control the movement of the adjusting part is included in the protection scope of the present application.
By applying the technical scheme, the on-line pulverized coal adjustable micro-oil ignition and combustion stabilizing device comprises a burner body; an adjusting part is arranged at one end in the burner body, and the adjusting part can adjust the quantity of combustion medium entering the burner body; a precombustion part arranged in the burner body and adjacent to the adjusting part; and a nozzle part arranged at the other end in the burner body. By the device, the quantity of the combustion medium entering the burner can be adjusted, so that the load adaptability of the boiler is improved, and the ignition and low-load oil consumption are reduced.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "examples," "particular examples," "one particular embodiment," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The present utility model is not limited to the above preferred embodiments, and any person skilled in the art, within the scope of the present utility model, may apply to the present utility model, and equivalents and modifications thereof are intended to be included in the scope of the present utility model.
Claims (6)
1. An on-line pulverized coal adjustable micro-oil ignition and stable combustion device is characterized by comprising:
a burner body;
an adjusting part is arranged at one end in the burner body, and the adjusting part can adjust the quantity of combustion medium entering the burner body;
a precombustion part arranged in the burner body and adjacent to the adjusting part;
a nozzle part provided at the other end of the burner body;
further comprises:
an inlet portion provided at one end of the burner body and in front of the adjustment portion;
the shape of the inlet part is set to be trapezoid;
the adjusting section includes:
the fixed shafts are adjacently arranged at the inlet part and are symmetrically arranged;
the stop block is movably arranged on the fixed shaft;
the movable angle of the stop block is 0-30 degrees in the axial direction of the fixed shaft.
2. The on-line pulverized coal adjustable micro-oil ignition and combustion stabilizing device according to claim 1, wherein the pre-combustion part comprises:
a first-stage precombustion chamber arranged adjacent to the adjusting part;
the second-stage precombustion chamber is adjacently arranged at the outlet of the first-stage precombustion chamber;
an oil combustion cylinder, one end of which is communicated with the primary precombustion chamber; the other end extends outside the burner body.
3. The on-line pulverized coal adjustable micro-oil ignition and combustion stabilizing device according to claim 2, wherein the nozzle parts are adjacent and communicated with the outlet of the secondary precombustor.
4. The on-line pulverized coal adjustable micro-oil ignition and combustion stabilizing device according to claim 3, wherein the primary precombustion chamber, the secondary precombustion chamber and the nozzle are respectively connected with the burner body through connecting plates.
5. The on-line pulverized coal adjustable micro-oil ignition and combustion stabilizing device according to claim 2, wherein the oil combustion cylinder is welded with the primary precombustor.
6. The on-line pulverized coal adjustable micro-oil ignition and combustion stabilizing device according to claim 1, further comprising:
and the control part is connected with the adjusting part and used for controlling the adjusting part to adjust the quantity of the combustion medium entering the burner body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320141030.9U CN220648257U (en) | 2023-01-17 | 2023-01-17 | Online pulverized coal adjustable micro-oil ignition and stable combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320141030.9U CN220648257U (en) | 2023-01-17 | 2023-01-17 | Online pulverized coal adjustable micro-oil ignition and stable combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220648257U true CN220648257U (en) | 2024-03-22 |
Family
ID=90263812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320141030.9U Active CN220648257U (en) | 2023-01-17 | 2023-01-17 | Online pulverized coal adjustable micro-oil ignition and stable combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220648257U (en) |
-
2023
- 2023-01-17 CN CN202320141030.9U patent/CN220648257U/en active Active
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