CN111207385A - Horizontal flue furnace top and cladding overheating structure of waste incineration waste heat boiler - Google Patents
Horizontal flue furnace top and cladding overheating structure of waste incineration waste heat boiler Download PDFInfo
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- CN111207385A CN111207385A CN202010140738.3A CN202010140738A CN111207385A CN 111207385 A CN111207385 A CN 111207385A CN 202010140738 A CN202010140738 A CN 202010140738A CN 111207385 A CN111207385 A CN 111207385A
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- cladding
- superheater
- header
- wall
- furnace top
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- 238000005253 cladding Methods 0.000 title claims abstract description 96
- 238000013021 overheating Methods 0.000 title claims abstract description 23
- 239000002918 waste heat Substances 0.000 title claims abstract description 15
- 238000004056 waste incineration Methods 0.000 title claims abstract description 15
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 11
- 238000001704 evaporation Methods 0.000 claims description 32
- 230000008020 evaporation Effects 0.000 claims description 32
- 238000005192 partition Methods 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 238000001816 cooling Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 206010022000 influenza Diseases 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G7/00—Steam superheaters characterised by location, arrangement, or disposition
- F22G7/12—Steam superheaters characterised by location, arrangement, or disposition in flues
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
- F22B37/107—Protection of water tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
Abstract
The invention relates to a waste incineration waste heat boiler horizontal flue furnace top and cladding adopting an overheating structure. The four flues of the waste incineration waste heat boiler conventionally adopt water-cooling membrane type walls, the ceiling and two side walls of the four flues are overheated, saturated steam from a steam drum in a steam-water flow firstly passes through the ceiling and the side walls, and the safety of the overheated wall is ensured. The heat exchange medium of the overheating ceiling is changed into a single-phase medium, so that the heat transfer deterioration condition does not exist, and the heat exchange system is relatively safe and reliable. Can absorb heat of a part of superheated steam, and can avoid overhigh smoke temperature entering a convection heating surface.
Description
Technical Field
The invention relates to a horizontal flue furnace top of a waste incineration waste heat boiler and an arrangement structure for overheating cladding.
Background
The horizontal flue, the ceiling and the side walls of the conventional waste incineration waste heat boiler are all of water cooling structures. However, the ceiling water-cooling structure has no height difference or very small height difference, so that the water circulation characteristic is very poor, the steam generation rate of the coated heating surface in a low-temperature area is very low, and the water circulation characteristic is also poor.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: with the continuous improvement of parameters of the waste incineration waste heat boiler, particularly the steam-water density difference becomes smaller after the pressure is improved, the water circulation characteristic becomes worse, and the risk of deterioration of the water-cooled ceiling and the cladding heat transfer of the horizontal flue is increased.
In order to achieve the purpose, the technical scheme of the invention provides a horizontal flue furnace top and a cladding overheating structure of a waste incineration waste heat boiler, saturated steam from a boiler barrel firstly passes through a vertical flue and then enters a horizontal flue, and the waste incineration waste heat boiler is characterized in that a ceiling and a side wrapping wall of the horizontal flue are clad by adopting the overheating structure.
Preferably, the overheating structure of the ceiling of the horizontal flue comprises a furnace top superheater, an inlet and an outlet of the furnace top superheater are respectively provided with a furnace top superheater inlet header and a furnace top superheater outlet header, saturated steam from a boiler barrel is introduced into the furnace top superheater inlet header through a first connecting pipe, and enters the furnace top superheater outlet header after absorbing heat through the furnace top superheater;
the overheating structure adopted by the side cladding wall cladding of the horizontal flue comprises a first side cladding wall header, a first side cladding wall lower header, a first rear side cladding superheater and a first front side cladding superheater, wherein the first side cladding wall header is divided into a first rear side cladding wall header and a first front side cladding superheater by a partition plate, the first rear side cladding wall header is not communicated with each other, an inlet of the first rear side cladding wall header is communicated with a header at an outlet of the furnace top superheater, an outlet of the first rear side cladding wall header is communicated with the first rear side cladding superheater, overheated steam absorbed by the first rear side cladding superheater is introduced into the first side cladding wall lower header, the overheated steam enters the first front side cladding superheater after flowing out of the first side cladding wall lower header and then is collected to a first front side cladding wall upper header, and the second front side cladding wall header is communicated with a connecting pipe.
Preferably, the first side-wall lower header is a through long header.
Preferably, the overheating structure of the ceiling of the horizontal flue comprises an evaporation screen front furnace top superheater, an evaporation screen rear furnace top superheater with an inlet provided with an evaporation screen rear furnace top superheater inlet header and an outlet provided with an evaporation screen rear furnace top superheater outlet header;
the overheating structure adopted by the side wrapping wall cladding of the horizontal flue comprises a side wrapping wall upper collection box II, a side wrapping wall lower collection box II, a rear side wall cladding superheater II, a middle side wall cladding superheater and a front side wall cladding superheater II, wherein the side wrapping wall upper collection box II is divided into a rear side wrapping wall upper collection box II and a middle front side wrapping wall upper collection box which are not communicated by a partition plate, and the side wrapping wall lower collection box II is divided into a middle rear side wrapping wall lower collection box and a front side wrapping wall lower collection box which are not communicated by a partition plate;
the saturated steam from the drum is divided into three paths: the first path is introduced into an evaporation screen front furnace top inlet header through a third connecting pipe, the evaporation screen front furnace top inlet header is communicated with an evaporation screen front furnace top superheater, and saturated steam enters a middle front side cladding wall header after being absorbed by the evaporation screen front furnace top superheater; the second path is introduced into a front side cladding lower header through a connecting pipe IV, absorbs heat through a front side wall cladding superheater II, is converged with the first path in a middle front side cladding upper header, enters a middle side wall cladding superheater, absorbs heat through the middle side wall cladding superheater and then is introduced into a rear side wall cladding superheater II through a middle rear side cladding lower header, absorbs heat through the rear side wall cladding superheater II and then is converged to a rear side cladding upper header II, the rear side cladding upper header II is communicated with an outlet pipe, and then is introduced into a lower inlet header through the outlet pipe; and the third path is introduced into an inlet header of a rear furnace top superheater of the evaporation screen by a connecting pipe five, enters the rear furnace top superheater of the evaporation screen to realize heat absorption, then is converged into an outlet header of the rear furnace top superheater of the evaporation screen, and is introduced into a lower inlet header by a connecting pipe six.
The invention has the following advantages:
1) the four flues of the waste incineration waste heat boiler conventionally adopt water-cooling membrane type walls, the ceiling and two side walls of the four flues are overheated, saturated steam from a steam drum in a steam-water flow firstly passes through the ceiling and the side walls, and the safety of the overheated wall is ensured.
2) For the heating surface of the ceiling, along with the increase of pressure, the steam-water density difference of a water cooling system is reduced, the water circulation characteristic of the water cooling ceiling is reduced, the heat transfer deterioration phenomena such as steam-water stratification and the like are easy to occur, the steam generation rate of the coated heating surface in a low-temperature area is very low, the water circulation characteristic is not good, the situation of heat transfer deterioration does not exist when the superheated ceiling and the coated heat exchange medium are changed into a single-phase medium, and the ceiling is safer and more reliable.
3) The overheating ceiling and the cladding replace the conventional water-cooling ceiling and the cladding, can bear the heat absorption of a part of overheating steam, and can reduce the smoke temperature entering the convection heating surface to slow down the corrosion rate of the high-temperature heating surface.
Drawings
FIG. 1 is a front view of the structure disclosed in embodiment 1 of the present invention;
FIG. 2 is a top view of the disclosed structure of example 1 of the present invention;
FIG. 3 is a front view of the structure disclosed in embodiment 2 of the present invention;
fig. 4 is a top view of the structure disclosed in embodiment 2 of the present invention.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The first three flues of the waste incineration waste heat boiler are vertical channels, and the fourth flue is a horizontal flue. The structure provided by the invention changes the ceiling and two side walls of the fourth flue (namely the horizontal flue) into an overheating structure. The following describes in detail embodiments of the present invention in examples 1 and 2.
Example 1
As shown in fig. 1 and 2, saturated steam at the outlet of the drum 1 is introduced into a top superheater inlet header 3 of the horizontal flue through a connecting pipe one 2, absorbs heat through a top superheater 4, and then enters a top superheater outlet header 5. The middle of the upper header of the side wrapping wall of the horizontal flue side wrapping wall is divided into a first header 6 on the rear side wrapping wall and a first header 10 on the front side wrapping wall which are not communicated with each other by a partition plate. An outlet header 5 of the furnace top superheater is communicated with a first header 6 on the back side cladding wall, steam which flows out of the first header 6 on the back side cladding wall enters a first rear side wall cladding superheater 7, and superheated steam which absorbs heat through the first rear side wall cladding superheater 7 is introduced into a first lower header 8 of the side cladding wall. The side wall lower header 8 is a through long header, superheated steam enters the front side wall cladding superheater I9 through the side wall lower header I8, absorbs heat through the front side wall cladding superheater I9, then is collected in the front side wall upper header 10, and then is led out through the connecting pipe II 11.
Example 2
As shown in fig. 3 and 4, the saturated steam at the outlet of the drum 1 is divided into three paths. The first route is directed by connecting line three 20 to the evaporation screen front roof inlet header 28. The front furnace top inlet header 28 of the evaporation screen is communicated with the front furnace top superheater 12 of the evaporation screen, absorbs heat through the front furnace top superheater 12 of the evaporation screen and then enters the middle front side cladding header 18. The second path is introduced into a front side cladding lower header 27 through a connecting pipe four 21, the front side cladding lower header 27 is communicated with a front side wall cladding superheater two 16, and after heat absorption is realized through the front side wall cladding superheater two 16, the second path is converged with a first path in a middle front side cladding upper header 18 and then enters a middle side wall cladding superheater 15. The middle side wall coated superheater 15 is communicated with a middle rear side wall lower header 19, steam which flows out of the middle side wall coated superheater 15 is introduced into a rear side wall coated superheater II 14 from the middle rear side wall lower header 19, and is absorbed by the rear side wall coated superheater II 14, and then is collected into a rear side wall upper header II 17, and is introduced into a lower inlet header through an outlet pipe 22. The third path is introduced into an evaporation screen rear furnace top superheater inlet header 24 of the evaporation screen rear furnace top superheater 13 through a connecting pipe five 23, enters the evaporation screen rear furnace top superheater 13 to absorb heat, then is converged into an evaporation screen rear furnace top superheater outlet header 25 of the evaporation screen rear furnace top superheater 13, and then is introduced into a lower-passing inlet header through a connecting pipe six 26.
Claims (4)
1. A waste incineration waste heat boiler horizontal flue furnace top and cladding overheating structure is characterized in that a ceiling and side wrapping wall cladding of a horizontal flue adopt overheating structures.
2. The waste incineration waste heat boiler horizontal flue furnace top and cladding overheating structure as set forth in claim 1, wherein the overheating structure of the ceiling of the horizontal flue comprises a furnace top superheater, an inlet and an outlet of the furnace top superheater are respectively provided with a furnace top superheater inlet header and a furnace top superheater outlet header, saturated steam from a boiler barrel is introduced into the furnace top superheater inlet header through a first connecting pipe, and enters the furnace top superheater outlet header after being absorbed by the furnace top superheater;
the overheating structure adopted by the side cladding wall cladding of the horizontal flue comprises a first side cladding wall header, a first side cladding wall lower header, a first rear side cladding superheater and a first front side cladding superheater, wherein the first side cladding wall header is divided into a first rear side cladding wall header and a first front side cladding superheater by a partition plate, the first rear side cladding wall header is not communicated with each other, an inlet of the first rear side cladding wall header is communicated with a header at an outlet of the furnace top superheater, an outlet of the first rear side cladding wall header is communicated with the first rear side cladding superheater, overheated steam absorbed by the first rear side cladding superheater is introduced into the first side cladding wall lower header, the overheated steam enters the first front side cladding superheater after flowing out of the first side cladding wall lower header and then is collected to a first front side cladding wall upper header, and the second front side cladding wall header is communicated with a connecting pipe.
3. The top and cladding overheating structure of a horizontal flue of a waste incineration and waste heat boiler as set forth in claim 2, wherein the first side-cladding lower header is a through long header.
4. The waste incineration waste heat boiler horizontal flue top and cladding overheating structure as set forth in claim 1, wherein the overheating structure of the ceiling of the horizontal flue comprises an evaporation screen front top superheater and an evaporation screen rear top superheater inlet header with an evaporation screen rear top superheater inlet and an evaporation screen rear top superheater outlet header with an evaporation screen rear top superheater outlet;
the overheating structure adopted by the side wrapping wall cladding of the horizontal flue comprises a side wrapping wall upper collection box II, a side wrapping wall lower collection box II, a rear side wall cladding superheater II, a middle side wall cladding superheater and a front side wall cladding superheater II, wherein the side wrapping wall upper collection box II is divided into a rear side wrapping wall upper collection box II and a middle front side wrapping wall upper collection box which are not communicated by a partition plate, and the side wrapping wall lower collection box II is divided into a middle rear side wrapping wall lower collection box and a front side wrapping wall lower collection box which are not communicated by a partition plate;
the saturated steam from the drum is divided into three paths: the first path is introduced into an evaporation screen front furnace top inlet header through a third connecting pipe, the evaporation screen front furnace top inlet header is communicated with an evaporation screen front furnace top superheater, and saturated steam enters a middle front side cladding wall header after being absorbed by the evaporation screen front furnace top superheater; the second path is introduced into a front side cladding lower header through a connecting pipe IV, absorbs heat through a front side wall cladding superheater II, is converged with the first path in a middle front side cladding upper header, enters a middle side wall cladding superheater, absorbs heat through the middle side wall cladding superheater and then is introduced into a rear side wall cladding superheater II through a middle rear side cladding lower header, absorbs heat through the rear side wall cladding superheater II and then is converged to a rear side cladding upper header II, the rear side cladding upper header II is communicated with an outlet pipe, and then is introduced into a lower inlet header through the outlet pipe; and the third path is introduced into an inlet header of a rear furnace top superheater of the evaporation screen by a connecting pipe five, enters the rear furnace top superheater of the evaporation screen to realize heat absorption, then is converged into an outlet header of the rear furnace top superheater of the evaporation screen, and is introduced into a lower inlet header by a connecting pipe six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010140738.3A CN111207385A (en) | 2020-03-03 | 2020-03-03 | Horizontal flue furnace top and cladding overheating structure of waste incineration waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010140738.3A CN111207385A (en) | 2020-03-03 | 2020-03-03 | Horizontal flue furnace top and cladding overheating structure of waste incineration waste heat boiler |
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| Publication Number | Publication Date |
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| CN111207385A true CN111207385A (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010140738.3A Pending CN111207385A (en) | 2020-03-03 | 2020-03-03 | Horizontal flue furnace top and cladding overheating structure of waste incineration waste heat boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034026A (en) * | 2021-11-16 | 2022-02-11 | 哈尔滨锅炉厂有限责任公司 | Wall wrapping flow system for supercritical circulating fluidized bed |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130239909A1 (en) * | 2011-04-11 | 2013-09-19 | Huaneng Clean Energy Research Institute | Arrangement structure suitable for inverted pulverized coal boiler with ultra-high steam temperature steam parameters |
| CN203940411U (en) * | 2014-06-25 | 2014-11-12 | 伟明环保设备有限公司 | A kind of arrangement of convection superheater |
| CN106402831A (en) * | 2016-09-13 | 2017-02-15 | 华能国际电力股份有限公司 | Double-flue boiler for supercritical CO 2 Brayton cycle power generation system |
| CN207394797U (en) * | 2017-09-19 | 2018-05-22 | 广州广重企业集团有限公司 | A kind of refuse incineration exhaust-heating boiler |
| CN211902837U (en) * | 2020-03-03 | 2020-11-10 | 上海锅炉厂有限公司 | Structure for overheating top and cladding of horizontal flue of waste incineration waste heat boiler |
-
2020
- 2020-03-03 CN CN202010140738.3A patent/CN111207385A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130239909A1 (en) * | 2011-04-11 | 2013-09-19 | Huaneng Clean Energy Research Institute | Arrangement structure suitable for inverted pulverized coal boiler with ultra-high steam temperature steam parameters |
| CN203940411U (en) * | 2014-06-25 | 2014-11-12 | 伟明环保设备有限公司 | A kind of arrangement of convection superheater |
| CN106402831A (en) * | 2016-09-13 | 2017-02-15 | 华能国际电力股份有限公司 | Double-flue boiler for supercritical CO 2 Brayton cycle power generation system |
| CN207394797U (en) * | 2017-09-19 | 2018-05-22 | 广州广重企业集团有限公司 | A kind of refuse incineration exhaust-heating boiler |
| CN211902837U (en) * | 2020-03-03 | 2020-11-10 | 上海锅炉厂有限公司 | Structure for overheating top and cladding of horizontal flue of waste incineration waste heat boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114034026A (en) * | 2021-11-16 | 2022-02-11 | 哈尔滨锅炉厂有限责任公司 | Wall wrapping flow system for supercritical circulating fluidized bed |
| CN114034026B (en) * | 2021-11-16 | 2023-10-13 | 哈尔滨锅炉厂有限责任公司 | Wall-wrapping flow system for supercritical circulating fluidized bed |
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