CN211902846U - Boiler material circulation system - Google Patents
Boiler material circulation system Download PDFInfo
- Publication number
- CN211902846U CN211902846U CN201922263880.2U CN201922263880U CN211902846U CN 211902846 U CN211902846 U CN 211902846U CN 201922263880 U CN201922263880 U CN 201922263880U CN 211902846 U CN211902846 U CN 211902846U
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- China
- Prior art keywords
- external heat
- heat exchanger
- return valve
- separator
- fluidized bed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000000463 material Substances 0.000 title claims abstract description 44
- 239000002893 slag Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 16
- 238000002156 mixing Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000003250 coal slurry Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model relates to a boiler material circulation system, which comprises a circulating fluidized bed boiler, a first separator, a second separator, a third separator, a fourth separator, a first return valve, a second return valve, a third return valve, a fourth return valve, a first external heat exchanger, a second external heat exchanger, a third external heat exchanger, a fourth external heat exchanger, a first slag cooler and a second slag cooler; the first separator, the second separator, the first return valve, the second return valve, the first external heat exchanger, the second external heat exchanger and the first slag cooler are arranged on one side of the circulating fluidized bed boiler, the third separator, the fourth separator, the third return valve, the fourth return valve, the third external heat exchanger, the fourth external heat exchanger and the second slag cooler are arranged on the other side of the circulating fluidized bed boiler, and the separators, the return valves, the external heat exchangers and the slag coolers on the two sides are symmetrically arranged. The utility model discloses can be applicable to the clean electricity generation of circulating fluidized bed boiler blending burning coal slime, the reliability is high.
Description
Technical Field
The utility model belongs to the technical field of circulating fluidized bed boiler mixes and burns coal slime clean electricity generation, especially, relate to a boiler material circulation system.
Background
Coal slurry is a waste product of coal washing processes and, because of its difficult handling and utilization, is deposited or filled into abandoned mines in many situations. The stacked coal slime occupies a large amount of land resources, and the coal slime can be lost when meeting water, is air-dried and flies, causes serious pollution to the environment, and has a harm degree larger than that of coal gangue which is washing waste; the coal slime filled in the mine causes the waste of a large amount of low-quality energy.
The coal slime is used for generating power, so that the problem of environmental pollution caused in the process of accumulating and storing the coal slime can be solved, and low-quality energy waste caused by filling the coal slime into a waste mine can be avoided.
Circulating Fluidized Bed (CFB) boilers serve as a new generation clean power generation technology and have the characteristics of wide fuel adaptability and low pollutant emission. The coal slime mixed burning clean power generation technology of the large circulating fluidized bed boiler is developed, the coal slime treatment capacity is large, the pollutant discharge is low, the energy-saving and emission-reducing effects are more obvious, huge economic benefits and good social benefits can be brought to coal mine enterprises, and the method has strategic significance for building resource-saving and environment-friendly power generation enterprises.
In order to realize material supply and distribution, a reliable boiler material circulating system suitable for clean power generation by blending coal slime in a circulating fluidized bed boiler is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a boiler material circulation system to solve above-mentioned technical problem.
The utility model provides a boiler material circulation system, which comprises a circulating fluidized bed boiler, a first separator, a second separator, a third separator, a fourth separator, a first return valve, a second return valve, a third return valve, a fourth return valve, a first external heat exchanger, a second external heat exchanger, a third external heat exchanger, a fourth external heat exchanger, a first slag cooler and a second slag cooler;
the first separator, the second separator, the first return valve, the second return valve, the first external heat exchanger, the second external heat exchanger and the first slag cooler are arranged on one side of the circulating fluidized bed boiler, the third separator, the fourth separator, the third return valve, the fourth return valve, the third external heat exchanger, the fourth external heat exchanger and the second slag cooler are arranged on the other side of the circulating fluidized bed boiler, and the separators, the return valves, the external heat exchangers and the slag coolers on the two sides are symmetrically arranged;
the first separator is connected with the first external heat exchanger through a first material return valve, and the first material return valve and the first external heat exchanger are connected with the circulating fluidized bed boiler; the second separator is connected with a second external heat exchanger through the second material return valve, the second material return valve and the second external heat exchanger are connected with the circulating fluidized bed boiler, and the first slag cooler is connected with the second external heat exchanger;
the third separator is connected with a third external heat exchanger through the third material return valve, and the third material return valve and the third external heat exchanger are connected with the circulating fluidized bed boiler; the fourth separator is connected with a fourth external heat exchanger through the fourth material return valve, the fourth material return valve and the fourth external heat exchanger are connected with the circulating fluidized bed boiler, and the second slag cooler is connected with the fourth external heat exchanger.
Further, the first material return valve, the second material return valve, the third material return valve and the fourth material return valve are cone valves.
Further, the first separator, the second separator, the third separator and the fourth separator are adiabatic cyclone separators.
Further, the first slag cooler and the second slag cooler are combined type slag coolers.
By means of the scheme, the boiler material circulating system can be suitable for clean power generation of the circulating fluidized bed boiler by blending and burning coal slime, and is high in reliability.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of the material circulation system of the boiler of the present invention.
Reference numbers in the figures:
1-a circulating fluidized bed boiler; 11-a boiler combustion chamber; 21-a first separator; 22-a second separator; 23-a third separator; 24-a fourth separator; 31-a first return valve; 32-a second material return valve; 33-a third material return valve; 34-a fourth material return valve; 41-a first external heat exchanger; 42-a second external heat exchanger; 43-third external heat exchanger; 44-fourth external heat exchanger.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1, the present embodiment provides a boiler material circulation system, which includes a circulating fluidized bed boiler 1, a first separator 21, a second separator 22, a third separator 23, a fourth separator 24, a first return valve 31, a second return valve 32, a third return valve 33, a fourth return valve 34, a first external heat exchanger 41, a second external heat exchanger 42, a third external heat exchanger 43, a fourth external heat exchanger 44, a first slag cooler (not shown), and a second slag cooler (not shown);
the first separator 21, the second separator 22, the first return valve 31, the second return valve 32, the first external heat exchanger 41, the second external heat exchanger 42 and the first slag cooler are arranged on one side of the circulating fluidized bed boiler 1, the third separator 23, the fourth separator 24, the third return valve 33, the fourth return valve 34, the third external heat exchanger 43, the fourth external heat exchanger 44 and the second slag cooler are arranged on the other side of the circulating fluidized bed boiler 1, and the separators, the return valves, the external heat exchangers and the slag coolers on the two sides are symmetrically arranged;
the first separator 21 is connected with the first external heat exchanger 41 through the first return valve 31, and the first return valve 31 and the first external heat exchanger 41 are connected with the circulating fluidized bed boiler 1; the second separator 22 is connected with a second external heat exchanger 42 through a second material return valve 32, the second material return valve 32 and the second external heat exchanger 42 are connected with the circulating fluidized bed boiler 1, and the first slag cooler is connected with the second external heat exchanger 42;
the third separator 23 is connected with a third external heat exchanger 43 through a third material return valve 33, and the third material return valve 33 and the third external heat exchanger 43 are connected with the circulating fluidized bed boiler 1; the fourth separator 24 is connected with a fourth external heat exchanger 44 through a fourth material return valve 34, the fourth material return valve 34 and the fourth external heat exchanger 44 are connected with the circulating fluidized bed boiler 1, and the second slag cooler is connected with the fourth external heat exchanger 44.
Through this boiler material circulation system, can be applicable to circulating fluidized bed boiler and mix burning coal slime clean power generation, the reliability is high. The problem of difficulty in arrangement of the heating surface and adjustment of bed temperature caused by the increase of the boiler capacity can be solved by arranging 4 external heat exchangers.
The boiler evaporation heating surface adopts a membrane type water-cooled wall and a water-cooled wall extension wall structure. The inlet of the external heat exchanger is provided with a material return valve which can adopt a cone valve, the separator can adopt a heat-insulating cyclone separator, and the distribution of the circulating material separated by the heat-insulating cyclone separator is controlled by adjusting the opening degree of the cone valve, so that the temperature of the bed and the temperature of the reheated steam are adjusted.
A high-temperature reheater and a low-temperature superheater are arranged in the two external heat exchangers close to the front of the furnace and used for adjusting the temperature of reheated steam; two medium temperature superheaters are arranged in the two external heat exchangers close to the back of the furnace to adjust the bed temperature. Each boiler is provided with 4 wind-water combined slag coolers for recycling part of heat.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A boiler material circulation system is characterized by comprising a circulating fluidized bed boiler, a first separator, a second separator, a third separator, a fourth separator, a first return valve, a second return valve, a third return valve, a fourth return valve, a first external heat exchanger, a second external heat exchanger, a third external heat exchanger, a fourth external heat exchanger, a first slag cooler and a second slag cooler;
the first separator, the second separator, the first return valve, the second return valve, the first external heat exchanger, the second external heat exchanger and the first slag cooler are arranged on one side of the circulating fluidized bed boiler, the third separator, the fourth separator, the third return valve, the fourth return valve, the third external heat exchanger, the fourth external heat exchanger and the second slag cooler are arranged on the other side of the circulating fluidized bed boiler, and the separators, the return valves, the external heat exchangers and the slag coolers on the two sides are symmetrically arranged;
the first separator is connected with the first external heat exchanger through a first material return valve, and the first material return valve and the first external heat exchanger are connected with the circulating fluidized bed boiler; the second separator is connected with a second external heat exchanger through the second material return valve, the second material return valve and the second external heat exchanger are connected with the circulating fluidized bed boiler, and the first slag cooler is connected with the second external heat exchanger;
the third separator is connected with a third external heat exchanger through the third material return valve, and the third material return valve and the third external heat exchanger are connected with the circulating fluidized bed boiler; the fourth separator is connected with a fourth external heat exchanger through the fourth material return valve, the fourth material return valve and the fourth external heat exchanger are connected with the circulating fluidized bed boiler, and the second slag cooler is connected with the fourth external heat exchanger.
2. The boiler feed circulation system of claim 1, wherein the first, second, third, and fourth return valves are cone valves.
3. The boiler feed circulation system of claim 2, wherein the first, second, third, and fourth separators are adiabatic cyclones.
4. The boiler feed circulation system of claim 3, wherein the first and second slag coolers are combined air-water slag coolers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922263880.2U CN211902846U (en) | 2019-12-16 | 2019-12-16 | Boiler material circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922263880.2U CN211902846U (en) | 2019-12-16 | 2019-12-16 | Boiler material circulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211902846U true CN211902846U (en) | 2020-11-10 |
Family
ID=73293199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922263880.2U Expired - Fee Related CN211902846U (en) | 2019-12-16 | 2019-12-16 | Boiler material circulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211902846U (en) |
-
2019
- 2019-12-16 CN CN201922263880.2U patent/CN211902846U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201110 |