CN113685836B - A pulverized coal adding device for thermal power generation equipment - Google Patents
A pulverized coal adding device for thermal power generation equipment Download PDFInfo
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- CN113685836B CN113685836B CN202110952806.0A CN202110952806A CN113685836B CN 113685836 B CN113685836 B CN 113685836B CN 202110952806 A CN202110952806 A CN 202110952806A CN 113685836 B CN113685836 B CN 113685836B
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- pipe
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- air
- furnace body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
本发明公开了一种火力发电设备的煤粉添加装置，包括混料室、添加单元、空气压缩机、炉体和排气单元，混料室设置有容置空间，包括与混料室同轴设置的立柱，立柱设置在容置空间内；添加单元包括安装座、进气管、转动座以及出气管，安装座设置有进气腔以及与进气腔连通的环形槽，转动座设置有过渡腔和开口，过渡腔通过开口与环形槽连通；空气压缩机的输出端与容置空间连通；炉体与混料室连通；炉体和混料室通过排气单元形成连通。本发明所述装置中的添加剂在进入混料室前，会随着转动座和出气管一起旋转，从而达到不同添加剂快速混合均匀的效果，进而在添加剂进入炉体时，能够让添加剂与煤粉混合的更加均匀，提高添加剂的利用率。
The invention discloses a pulverized coal adding device for thermal power generation equipment, which includes a mixing chamber, an adding unit, an air compressor, a furnace body and an exhaust unit. The mixing chamber is provided with an accommodation space, including a mixing chamber coaxial with the mixing chamber. The upright column is set in the accommodation space; the additional unit includes a mounting base, an air inlet pipe, a rotating base and an air outlet pipe, the mounting base is provided with an air inlet cavity and an annular groove connected with the air inlet cavity, and the rotating base is provided with a transition cavity and the opening, the transition chamber is connected to the annular groove through the opening; the output end of the air compressor is connected to the accommodation space; the furnace body is connected to the mixing chamber; the furnace body and the mixing chamber are connected through the exhaust unit. Before the additives in the device of the present invention enter the mixing chamber, they will rotate together with the rotating seat and the air outlet pipe, thereby achieving the effect of rapid and uniform mixing of different additives, and then when the additives enter the furnace body, the additives and pulverized coal can be mixed The mixing is more uniform and the utilization rate of additives is improved.
Description
Technical Field
The application relates to the technical field of thermal power generation, in particular to a pulverized coal adding device of thermal power generation equipment.
Background
Thermal power generation utilizes heat energy generated by combustible materials during combustion, and the heat energy is converted into electric energy through a power generation device. In order to improve comprehensive economic benefits, thermal power generation should be performed as close to the fuel base as possible.
The power plant is more and more focused on fuel utilization rate and energy saving and emission reduction, in order to improve power generation benefit, a few additives are often added into a combustion furnace to ensure combustion efficiency, but the existing adding mode can lead to uneven distribution of the additives, the additives cannot be fully contacted with coal dust, the additives cannot fully react in the first time, and the utilization rate is low.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
The present application has been made in view of the above-mentioned and/or problems occurring in the pulverized coal adding device of the conventional thermal power plant.
Therefore, the problem to be solved by the application is how to improve the rapid and uniform mixing of different additives.
In order to solve the technical problems, the application provides the following technical scheme: the pulverized coal adding device of the thermal power generation equipment comprises a mixing chamber, an adding unit, an air compressor, a furnace body and an exhaust unit, wherein an accommodating space is formed in the mixing chamber, an upright post is arranged in the accommodating space, and the upright post and the mixing chamber are coaxially arranged; the adding unit comprises a mounting seat, an air inlet pipe, a rotating seat and an air outlet pipe, wherein the mounting seat is arranged on the upright post, the air inlet pipe is communicated with the mounting seat, the rotating seat is rotationally connected with the mounting seat, the air outlet pipe is connected with the rotating seat, the mounting seat is provided with an air inlet cavity and an annular groove communicated with the air inlet cavity, the rotating seat is provided with a transition cavity and an opening, and the transition cavity is communicated with the annular groove through the opening; the output end of the air compressor is communicated with the accommodating space; the furnace body is communicated with the mixing chamber; and the furnace body and the mixing chamber are communicated through the exhaust unit.
As a preferable mode of the pulverized coal adding device of the thermal power plant of the application, wherein: the exhaust unit comprises a connecting pipe, the connecting pipe is arranged between the accommodating space and the furnace body, one end of the connecting pipe is rotationally connected with the mixing chamber, and the other end of the connecting pipe is rotationally connected with the furnace body.
As a preferable mode of the pulverized coal adding device of the thermal power plant of the application, wherein: the exhaust unit further comprises a stirring fan, wherein the stirring fan is positioned in the accommodating space and is installed at one end of the connecting pipe.
As a preferable mode of the pulverized coal adding device of the thermal power plant of the application, wherein: the exhaust unit further comprises an exhaust pipe, and the exhaust pipe is installed at the other end of the connecting pipe and is further provided with a plurality of exhaust ports.
As a preferable mode of the pulverized coal adding device of the thermal power plant of the application, wherein: the mixing chamber further comprises a wind dispersing plate, the wind dispersing plate is arranged at the bottom of the mixing chamber, and a plurality of through holes are further formed and communicated with the output end of the air compressor.
As a preferable mode of the pulverized coal adding device of the thermal power plant of the application, wherein: at least one through hole is arranged on any radius of the air dispersing plate.
As a preferable mode of the pulverized coal adding device of the thermal power plant of the application, wherein: the outlet duct includes first pipe and second pipe, first pipe with the second pipe sets up perpendicularly, first pipe with rotate the seat intercommunication, the second pipe with first pipe deviates from rotate the one end intercommunication of seat.
As a preferable mode of the pulverized coal adding device of the thermal power plant of the application, wherein: the adding unit further comprises inclined plates, the inclined plates and the air outlet pipes are respectively distributed on two opposite sides of the rotating seat, and the inclined directions of the adjacent inclined plates in the adding unit are opposite.
As a preferable mode of the pulverized coal adding device of the thermal power plant of the application, wherein: the adding units are arranged in a plurality, and are sequentially arranged along the axial direction of the upright post.
As a preferable mode of the pulverized coal adding device of the thermal power plant of the application, wherein: a sealing sleeve is arranged between the upright post and the mounting seat, and a sealing sleeve is arranged between the upright post and the rotating seat.
The device has the beneficial effects that the device adds the additives through the air inlet pipe, a plurality of additives respectively enter the mounting seat through different air inlet pipes, then enter the mixing chamber through the rotating seat and the air outlet pipe, the additives are uniformly mixed in the mixing chamber, and the uniformly mixed additives are sent into the furnace body along the exhaust assembly by the air compressor to be mixed with the coal dust. The additive in the device can rotate along with the rotating seat and the air outlet pipe before entering the mixing chamber, so that the effect of quickly and uniformly mixing different additives is achieved, and the additive and the pulverized coal can be more uniformly mixed when entering the furnace body, and the utilization rate of the additive is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
fig. 1 is a schematic view of a pulverized coal adding device of a thermal power plant.
Fig. 2 is a schematic diagram of an addition assembly of the pulverized coal addition device of the thermal power plant.
Fig. 3 is a schematic view of a mount of a pulverized coal adding device of a thermal power plant.
Fig. 4 is a schematic view of a rotating seat of a pulverized coal adding device of a thermal power plant.
Fig. 5 is a top cross-sectional view of a rotating seat of a pulverized coal adding device of a thermal power plant.
Fig. 6 is a schematic view of an exhaust unit of the pulverized coal adding device of the thermal power plant.
Fig. 7 is a schematic view of a wind deflector of a pulverized coal adding device of a thermal power plant.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 and 2, a pulverized coal adding device of a thermal power plant, which includes a mixing chamber 100, an adding unit 200, an air compressor 300, a furnace body 400, and an exhaust unit 500, is provided as a first embodiment of the present application.
The inside accommodation space M that is provided with of compounding room 100 is provided with stand 101 in the accommodation space M, stand 101 with the coaxial setting of compounding room 100.
The adding unit 200 comprises a mounting seat 201, an air inlet pipe 202, a rotating seat 203 and an air outlet pipe 204, wherein the mounting seat 201 is mounted on the upright post 101, the air inlet pipe 202 is communicated with the mounting seat 201, the rotating seat 203 is rotationally connected with the mounting seat 201, the air outlet pipe 204 is connected with the rotating seat 203, the mounting seat 201 is provided with an air inlet cavity N and an annular groove O communicated with the air inlet cavity N, the rotating seat 203 is provided with a transition cavity P and an opening Q, and the transition cavity P is communicated with the annular groove O through the opening Q.
The output end of the air compressor 300 is communicated with the accommodating space M.
The furnace body 400 is communicated with the mixing chamber 100.
And an exhaust unit 500, wherein the furnace body 400 and the mixing chamber 100 are communicated through the exhaust unit 500.
When the air-conditioning device is used, additives are added through the air inlet pipe 202, various additives respectively enter the mounting seat 201 through different air inlet pipes 202, then enter the mixing chamber 100 through the rotating seat 203 and the air outlet pipe 204, the various additives are uniformly mixed in the mixing chamber 100, and the uniformly mixed additives are sent into the furnace body 400 along the air exhaust unit 500 by the air compressor 300 to be mixed with pulverized coal. Before entering the mixing chamber 100, the additive in the pulverized coal adding device of the thermal power generation equipment rotates along with the rotating seat 203 and the air outlet pipe 204, so that the effect of quickly and uniformly mixing different additives is achieved, and when the additive enters the furnace body 400, the additive and the pulverized coal can be more uniformly mixed, and the utilization rate of the additive is improved.
Example 2
Referring to fig. 1 to 6, a second embodiment of the present application is different from the first embodiment.
Specifically, the exhaust unit 500 includes a connection pipe 501, where the connection pipe 501 is disposed between the accommodating space M and the furnace body 400, and one end of the connection pipe is rotatably connected to the mixing chamber 100, and the other end of the connection pipe is rotatably connected to the furnace body 400.
Further, the exhaust unit 500 further includes a stirring fan 502, where the stirring fan 502 is located in the accommodating space M and is installed at one end of the connecting pipe 501; when the stirring fan 502 works, the wind in the accommodating space M is rotated, and the rotated wind has gathering property, i.e. the gas is gathered towards the middle position.
Preferably, the exhaust unit 500 further includes an exhaust pipe 503, the exhaust pipe 503 is installed at the other end of the connection pipe 501, and a plurality of exhaust ports 503a are further provided; when the additives mixed uniformly enter the furnace body 400 along the exhaust pipe 503, the additives enter the furnace body 400 from the plurality of exhaust ports 503a respectively, and at this time, the additives can be fully contacted with the coal dust, so that the utilization rate of the additives is improved.
When the air-conditioning device is used, additives are added through the air inlet pipe 202, a plurality of additives respectively enter the mounting seat 201 through different air inlet pipes 202, then enter the mixing chamber 100 through the rotating seat 203 and the air outlet pipe 204, the additives are uniformly mixed in the mixing chamber 100, and the uniformly mixed additives are sent into the furnace body 400 along the air exhaust unit 500 by the air compressor 300 to be mixed with coal dust; specifically, the additive enters the accommodating space M through the connecting pipe 501, the stirring fan 502 works to rotate the air in the accommodating space M, and the rotating air has gathering property, that is, the air is gathered towards the middle position, and the uniformly mixed additive enters the furnace body 400 from the plurality of air vents 503a to be mixed with the pulverized coal. Before entering the mixing chamber 100, the additive in the pulverized coal adding device of the thermal power generation equipment rotates along with the rotating seat 203 and the air outlet pipe 204, so that the effect of quickly and uniformly mixing different additives is achieved, and when the additive enters the furnace body 400, the additive and the pulverized coal can be more uniformly mixed, and the utilization rate of the additive is improved.
Example 3
Referring to fig. 1 to 7, a third embodiment of the present application is shown, which is different from the first two embodiments in that: .
Specifically, the mixing chamber 100 further includes a wind dispersing plate 102, where the wind dispersing plate 102 is installed at the bottom of the mixing chamber 100, and a plurality of through holes 102a are further provided, and the plurality of through holes 102a are communicated with the output end of the air compressor 300; dividing the air flow of the air compressor 300 into multiple streams can disturb the air flow at the bottom of the mixing chamber 100, thereby allowing rapid mixing of different additives.
Further, at least one through hole 102a is arranged on any radius of the air diffusing plate 102; this ensures that the gas emitted from the air compressor 300 acts on the inclined plate 205 no matter where the inclined plate 205 is located in the mixing chamber 100, thereby ensuring that the rotary base 203 can rotate stably. Referring to fig. 7, a partial radius of the louvers 102 is shown, with at least one through hole 102a in each radius of the louver 102.
Preferably, the air outlet pipe 204 includes a first pipe 204a and a second pipe 204b, where the first pipe 204a and the second pipe 204b are vertically disposed, the first pipe 204a is in communication with the rotating seat 203, and the second pipe 204b is in communication with an end of the first pipe 204a facing away from the rotating seat 203; the second tube 204b is arranged to allow the additive to enter along the edge of the mixing chamber 100 and to mix with other additives as it converges towards the middle, thereby allowing the additives to be mixed more evenly.
Preferably, the adding unit 200 further includes inclined plates 205, the inclined plates 205 and the air outlet pipes 204 are respectively distributed on two opposite sides of the rotating seat 203, and the inclined directions of the inclined plates 205 in adjacent adding units 200 are opposite; on the one hand, when the inclined plate 205 receives the air flow blown into the mixing chamber 100 by the air compressor 300, the rotating seat 203 can be driven to rotate by the air flow pair thrust formed by the air compressor 300, and on the other hand, the rotating inclined plate 205 has a disturbing effect on the air flow, so that the additives can be mixed together and uniformly stirred by the stirring fan 502. The power source of the rotating seat 203 in this embodiment mainly includes two sources, one is a reaction force formed by the gas on the wall of the first pipe 204a when the gas enters the mixing chamber 100 along the second pipe 204b (the diameter of the second pipe 204b may be smaller than that of the first pipe 204a to increase the attack force), and the other is a thrust force generated by the high-pressure gas in the air compressor 300 on the inclined plate 205.
Specifically, the adding units 200 are provided in plurality and are sequentially arranged along the axial direction of the upright 101; the second tubes 204b in the two adjacent groups of adding units 200 are opposite in direction away from the first tube 204a, and the rotating seats 203 in the two adjacent groups of adding units 200 are opposite in rotating direction; thus, the additives can be mixed uniformly more quickly.
Further, a sealing sleeve L1 is disposed between the upright post 101 and the mounting seat 201, and a sealing sleeve L2 is disposed between the upright post 101 and the rotating seat 203; this improves the tightness and prevents the additive from flowing out along the gap between the rotating seat 203 and the upright 101, ensuring a sufficient reaction force of the additive on the first tube 204a when it flows out along the second tube 204 b.
When the mixer is used, additives are added through the air inlet pipe 202, a plurality of additives respectively enter the mounting seat 201 through different air inlet pipes 202, then enter the mixing chamber 100 through the rotating seat 203 and the air outlet pipe 204, the plurality of additives are uniformly mixed in the mixing chamber 100, the air flow of the air compressor 300 is divided into a plurality of air flows by the air dispersing plate 102, and the air flow at the bottom of the mixing chamber 100 can be disturbed, so that different additives can be rapidly mixed; the uniformly mixed additive is sent into the furnace body 400 along the exhaust unit 500 to be mixed with the coal dust; specifically, the additive enters the accommodating space M through the connecting pipe 501, the stirring fan 502 works to rotate the air in the accommodating space M, and the rotating air has gathering property, that is, the air is gathered towards the middle position, and the uniformly mixed additive enters the furnace body 400 from the plurality of air vents 503a to be mixed with the pulverized coal. Before entering the mixing chamber 100, the additive in the pulverized coal adding device of the thermal power generation equipment rotates along with the rotating seat 203 and the air outlet pipe 204, so that the effect of quickly and uniformly mixing different additives is achieved, and when the additive enters the furnace body 400, the additive and the pulverized coal can be more uniformly mixed, and the utilization rate of the additive is improved.
It should be noted that the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application, which is intended to be covered in the scope of the claims of the present application.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110952806.0A CN113685836B (en) | 2021-08-19 | 2021-08-19 | A pulverized coal adding device for thermal power generation equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110952806.0A CN113685836B (en) | 2021-08-19 | 2021-08-19 | A pulverized coal adding device for thermal power generation equipment |
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| CN113685836A CN113685836A (en) | 2021-11-23 |
| CN113685836B true CN113685836B (en) | 2023-09-26 |
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| CN209020309U (en) * | 2018-07-26 | 2019-06-25 | 宁波一品生物技术有限公司 | High speed powder stirring machine convenient to use |
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| CN209530657U (en) * | 2019-01-28 | 2019-10-25 | 厦门唯康食品科技有限公司 | One kind being convenient for the uniform food additives mixing device of mixing |
| CN209997519U (en) * | 2019-04-29 | 2020-01-31 | 天津生泰源生物科技有限公司 | feed additive mixing device |
| CN113181800A (en) * | 2021-05-08 | 2021-07-30 | 崔伟庆 | Raw material homogenizing system for cement production |
| CN113234495A (en) * | 2021-06-10 | 2021-08-10 | 河北益普莱环保科技有限公司 | Novel fountain ammonium sulfate saturator |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB479208A (en) * | 1935-10-03 | 1938-02-02 | Electricite De Paris Soc D | Rotary mixer for pulverized coal burners |
| GB1421517A (en) * | 1973-02-02 | 1976-01-21 | Interliz Anstalt | Apparatus for whirling-up a powdery or granular material in a vessel and for blowing it out of this vessel ready-to-eat cereal |
| US5603566A (en) * | 1995-11-21 | 1997-02-18 | Abb Flexible Automation Inc. | Powder hopper with internal air assist |
| CN105286049A (en) * | 2015-12-05 | 2016-02-03 | 重庆特驱饲料有限公司 | Rotary distributor system |
| CN206103847U (en) * | 2016-09-30 | 2017-04-19 | 扬州大学 | Multiple spot supersound that is used for wood plastic composite strength is whitewashed equipment thoughtlessly |
| CN208773856U (en) * | 2018-07-26 | 2019-04-23 | 徐州辛辛那提新型材料有限公司 | A kind of energy-saving vertical batch mixer of good mixing effect |
| CN209020309U (en) * | 2018-07-26 | 2019-06-25 | 宁波一品生物技术有限公司 | High speed powder stirring machine convenient to use |
| CN209530657U (en) * | 2019-01-28 | 2019-10-25 | 厦门唯康食品科技有限公司 | One kind being convenient for the uniform food additives mixing device of mixing |
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| CN113685836A (en) | 2021-11-23 |
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Application publication date: 20211123 Assignee: Xing'an Thermal Power Co.,Ltd. Assignor: Baotou No.3 thermal power plant of North United Power Co.,Ltd. Contract record no.: X2024980028324 Denomination of invention: A coal powder addition device for thermal power generation equipment Granted publication date: 20230926 License type: Common License Record date: 20241126 |
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Application publication date: 20211123 Assignee: XI'AN XIRE ENERGY SAVING TECHNOLOGY Co.,Ltd. Assignor: Baotou No.3 thermal power plant of North United Power Co.,Ltd. Contract record no.: X2025980027618 Denomination of invention: A coal powder addition device for thermal power generation equipment Granted publication date: 20230926 License type: Common License Record date: 20251015 |
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