CN213746707U - High-temperature high-pressure circulating fluidized bed boiler with protection structure - Google Patents
High-temperature high-pressure circulating fluidized bed boiler with protection structure Download PDFInfo
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- CN213746707U CN213746707U CN202022652341.0U CN202022652341U CN213746707U CN 213746707 U CN213746707 U CN 213746707U CN 202022652341 U CN202022652341 U CN 202022652341U CN 213746707 U CN213746707 U CN 213746707U
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- Prior art keywords
- separator
- striking plate
- fluidized bed
- coated
- bed boiler
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 239000004744 fabric Substances 0.000 claims abstract description 14
- 239000003365 glass fiber Substances 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000008187 granular material Substances 0.000 abstract description 4
- 239000002245 particle Substances 0.000 description 8
- 239000003546 flue gas Substances 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 239000006028 limestone Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Images
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses a high-temperature high-pressure circulating fluidized bed boiler with a protection structure, which comprises a reaction furnace, a separator and a flue communicated between the reaction furnace and the separator, wherein the top of the separator is communicated with an air outlet pipe, and a return pipe is communicated between the bottom of the separator and the reaction furnace; the separator comprises a steel shell, a protection plate fixedly coated on the inner wall of the shell, glass fiber cloth fixedly coated on the inner wall of the protection plate, a first striking plate and a second striking plate which are coated and fixed in the glass fiber cloth from outside to inside, wherein the first striking plate and the second striking plate are fixedly connected; a spiral boss is arranged on the inner side wall of the first striking plate; the second striking plate is provided with a plurality of convex strips arranged along the vertical direction; the utility model discloses utilize first hitting board to promote the tolerance effect of hitting the granule, utilize the second to hit board guide granule backward flow, promoted the life of separator.
Description
Technical Field
The utility model relates to a desulfurization processing field especially relates to a high temperature high pressure circulating fluidized bed boiler with protection architecture.
Background
Fluidized bed means a fluidized bed in which a mass of solid particles is suspended in a moving fluid so that the particles have certain apparent characteristics of the fluid, and this state of solid-to-contact is called solid fluidization. The desulfurization process for circulating fluidized bed boiler is characterized by that it uses limestone as desulfurizing absorbent, the coal and limestone are fed into the lower portion of combustion chamber of the boiler, the primary air is fed into the lower portion of air-distributing plate, and the secondary air is fed into the middle portion of combustion chamber. Limestone is thermally decomposed into calcium oxide and carbon dioxide. The air flow makes the fire coal and lime particles strongly disturbed in the combustion chamber to form a fluidized bed, and SO in the fire coal flue gas2The calcium oxide is contacted with the calcium oxide to generate chemical reaction and be removed. In order to improve the utilization rate of the absorbent, unreacted calcium oxide, desulfurization products and fly ash are sent back to the combustion chamber to participate in cyclic utilization. The separation of the flue gas and the solid particles contained in the flue gas is carried out by a cyclone separator, namely, the flue gas after reaction is sent out from the upper part according to the difference of the generated centrifugal force, and the solid particles are sent back into the reaction chamber from the lower part. In the separation process, solid particles can continuously hit the inner wall of the separator, and the inner wall of the separator can be continuously worn and consumed after long-term use, so that the inner wall is cracked and the like, the target area is damaged, or the high-temperature resistance degree of the separator is reduced and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a high-temperature high-pressure circulating fluidized bed boiler with a protection structure.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a high-temperature high-pressure circulating fluidized bed boiler with a protection structure comprises a reaction furnace, a separator and a flue communicated between the reaction furnace and the separator, wherein the top of the separator is communicated with an air outlet pipe, and a return pipe is communicated between the bottom of the separator and the reaction furnace; the separator comprises a steel shell, a protection plate fixedly coated on the inner wall of the shell, glass fiber cloth fixedly coated on the inner wall of the protection plate, a first striking plate and a second striking plate which are coated and fixed in the glass fiber cloth from outside to inside, wherein the first striking plate is fixedly connected with the second striking plate; a spiral boss is arranged on the inner side wall of the first striking plate; the second striking plate is provided with a plurality of convex strips arranged along the vertical direction.
Preferably, the cross-sectional line of the first striking plate has a sine wave shape.
Preferably, the separator includes a straight hole section and a conical hole section located below the straight hole section, the first striking plate is coated on the hole wall of the straight hole section, and the second striking plate is coated on the hole wall of the conical hole section.
Preferably, the inner surfaces of the first striking plate and the second striking plate are coated with wear-resistant and high-temperature-resistant coatings.
Preferably, the separator is a cyclone separator.
Preferably, the flue communicates with the upper half of the separator.
The utility model has the advantages that: the utility model discloses divide into shell, protection shield, glass fiber cloth and strike board, five layer structure of coating with cyclone's casing, utilize first strike board to promote the separator inner wall and to the resistant effect that the granule was struck, utilize the second to strike board guide granule backward flow, promoted the life of separator, utilize glass fiber cloth and protection shield to play the effect of bottom line protection, ensured staff's operational environment safety.
Drawings
FIG. 1 is a schematic structural view of a cyclone separator of a fluidized bed boiler according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a schematic front view of the first striking plate and the second striking plate.
Reference numbers in the figures: the device comprises a reaction furnace 1, a separator 2, a shell 21, a protective plate 22, glass fiber cloth 23, a first striking plate 24, a boss 241, a second striking plate 25, a convex strip 251, a flue 3, an air outlet pipe 4, a return pipe 5 and a coating 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a high-temperature high-pressure circulating fluidized bed boiler with a protection structure comprises a reaction furnace 1, a separator 2 and a flue 3 communicated between the reaction furnace 1 and the separator 2, wherein the top of the separator 2 is communicated with an air outlet pipe 4, and a return pipe 5 is communicated between the bottom of the separator 2 and the reaction furnace 1; the separator 2 comprises a steel shell 21, a protective plate 22 fixedly coated on the inner wall of the shell 21, glass fiber cloth 23 fixedly coated on the inner wall of the protective plate 22, a first striking plate 24 and a second striking plate 25 coated and fixed in the glass fiber cloth 23 from outside to inside, wherein the first striking plate 24 and the second striking plate 25 are fixedly connected; a spiral boss 241 is arranged on the inner side wall of the first striking plate 24; the second striking plate 25 is provided with a plurality of projecting strips 251 arranged in the vertical direction.
In the present embodiment, the cross-sectional line of the first striking plate 24 has a sine wave shape.
In this embodiment, the separator 2 includes a straight hole section and a conical hole section located below the straight hole section, the first striking plate 24 is coated on the hole wall of the straight hole section, and the second striking plate 25 is coated on the hole wall of the conical hole section.
In the present embodiment, the inner surfaces of the first striking plate 24 and the second striking plate 25 are coated with the wear-resistant and high-temperature-resistant coating 6.
In the present embodiment, the separator 2 is a cyclone separator.
In the present embodiment, the flue 3 communicates with the upper half of the separator 2.
The working principle is as follows: the movement track of the flue gas which is centrifugally rotated is determined from the inner wall of the scrapped separator 2, the cross section of the striking boss left on the inner wall of the separator 2 is arc-shaped, and a spiral boss track is finally formed, because the initial temperature of the flue gas entering the separator 2 from the reaction furnace 1 through the flue 3 is about 850 ℃, the wind direction and the rotating speed provided by the cyclone separator are fixed, the formed spiral is related to the size of the separator 2, namely the striking track can be basically determined, according to the principle, the utility model discloses a structure of the first striking plate 24 and the second striking plate 25 is arranged, particles can basically strike in the wave peak area of the first striking plate 24, so that the striking force can be dispersed by the wave peak, and the striking force is reduced by about two times compared with the original plane structure, namely, the striking force is equivalent to thickening of a plate of a part of the area compared with the original plane structure, the wear resistance of the striking plate can be improved, and the possibility of cracking of the striking plate can be reduced due to the sine wave; the second striking plate 25 is less stressed and has an indefinite shape, so the arrangement of the convex strips 251 can form a flow channel between adjacent convex strips 251, and guide the particles to fall down along the return pipe 5 and return to the reaction furnace for continuous reaction.
The coating 6 is used for improving the wear resistance and high temperature resistance of the plate; the high temperature resistant degree of glass fiber cloth 23 can reach 1000 ℃, and under the condition that coating 6 is damaged, glass fiber cloth 23 still can play the effect of stable isolation temperature, firstly, promote the life of separator 2, secondly, play the effect of bottom line protection.
The protective plate 22 is made of a metal material with high toughness and high strength, plays a role in preventing cracking, prolongs the service life of the separator 2, can still avoid smoke leakage on the basis of the service life, and improves the safety of the working environment of workers; the inner wall of the protection plate 22 is provided with a wavy surface which can improve the connection stability between the protection plate and the glass fiber cloth 23.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A high-temperature high-pressure circulating fluidized bed boiler with a protection structure comprises a reaction furnace (1), a separator (2) and a flue (3) communicated between the reaction furnace (1) and the separator (2), and is characterized in that the top of the separator (2) is communicated with an air outlet pipe (4), and a return pipe (5) is communicated between the bottom of the separator (2) and the reaction furnace (1); the separator (2) comprises a steel shell (21), a protective plate (22) fixedly coated on the inner wall of the shell (21), glass fiber cloth (23) fixedly coated on the inner wall of the protective plate (22), a first striking plate (24) and a second striking plate (25) coated and fixed in the glass fiber cloth (23) from outside to inside, wherein the first striking plate (24) and the second striking plate (25) are fixedly connected; a spiral boss (241) is arranged on the inner side wall of the first striking plate (24); the second striking plate (25) is provided with a plurality of convex strips (251) arranged along the vertical direction.
2. A high-temperature high-pressure circulating fluidized bed boiler with a protective structure according to claim 1, characterized in that the cross-sectional line of the first striking plate (24) is sine-wave shaped.
3. A high-temperature high-pressure circulating fluidized bed boiler with a protective structure according to claim 1, characterized in that the separator (2) comprises a straight hole section and a conical hole section below the straight hole section, the first striking plate (24) is coated on the hole wall of the straight hole section, and the second striking plate (25) is coated on the hole wall of the conical hole section.
4. A high-temperature high-pressure circulating fluidized bed boiler with a protective structure according to claim 1, characterized in that the inner surfaces of the first striking plate (24) and the second striking plate (25) are coated with a wear-resistant and high-temperature-resistant coating (6).
5. A high-temperature high-pressure circulating fluidized bed boiler with a protective structure according to claim 1, characterized in that the separator (2) is a cyclone separator.
6. A high-temperature high-pressure circulating fluidized bed boiler with a protective structure according to claim 1, characterized in that the flue (3) communicates with the upper half of the separator (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022652341.0U CN213746707U (en) | 2020-11-16 | 2020-11-16 | High-temperature high-pressure circulating fluidized bed boiler with protection structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022652341.0U CN213746707U (en) | 2020-11-16 | 2020-11-16 | High-temperature high-pressure circulating fluidized bed boiler with protection structure |
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| Publication Number | Publication Date |
|---|---|
| CN213746707U true CN213746707U (en) | 2021-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022652341.0U Active CN213746707U (en) | 2020-11-16 | 2020-11-16 | High-temperature high-pressure circulating fluidized bed boiler with protection structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294647A (en) * | 2021-12-21 | 2022-04-08 | 湖州南太湖电力科技有限公司 | Boiler combustion system with material returning function |
-
2020
- 2020-11-16 CN CN202022652341.0U patent/CN213746707U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114294647A (en) * | 2021-12-21 | 2022-04-08 | 湖州南太湖电力科技有限公司 | Boiler combustion system with material returning function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A high temperature and high pressure circulating fluidized bed boiler with protective structure Effective date of registration: 20220303 Granted publication date: 20210720 Pledgee: Branches of Jinan Rural Commercial Bank Co.,Ltd. Pledgor: Guohe Xinchuang Engineering Design Co.,Ltd. Registration number: Y2022980002110 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230222 Granted publication date: 20210720 Pledgee: Branches of Jinan Rural Commercial Bank Co.,Ltd. Pledgor: Guohe Xinchuang Engineering Design Co.,Ltd. Registration number: Y2022980002110 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A High Temperature and High Pressure Circulating Fluidized Bed Boiler with Protective Structure Effective date of registration: 20230309 Granted publication date: 20210720 Pledgee: Branches of Jinan Rural Commercial Bank Co.,Ltd. Pledgor: Guohe Xinchuang Engineering Design Co.,Ltd. Registration number: Y2023980034348 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20210720 Pledgee: Branches of Jinan Rural Commercial Bank Co.,Ltd. Pledgor: Guohe Xinchuang Engineering Design Co.,Ltd. Registration number: Y2023980034348 |