CN108730952A - For flue series arrangement before and after generating plant pulverized coal boiler economizer - Google Patents
For flue series arrangement before and after generating plant pulverized coal boiler economizer Download PDFInfo
- Publication number
- CN108730952A CN108730952A CN201810902757.8A CN201810902757A CN108730952A CN 108730952 A CN108730952 A CN 108730952A CN 201810902757 A CN201810902757 A CN 201810902757A CN 108730952 A CN108730952 A CN 108730952A
- Authority
- CN
- China
- Prior art keywords
- flue
- economizer
- coal
- boiler
- pulverized coal
- Prior art date
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
Abstract
One kind is for flue series arrangement before and after generating plant pulverized coal boiler economizer.Front and back flue outlet gas temperature windage is larger after preventing the practical burning coal Parameters variation of power plant, effectively controls preheater and imports and exports smoke temperature.The economizer（4）It is arranged in preceding flue（1）And rear pass（2）Region, economizer（4）Pipe is by passing through midfeather（3）Arranged in series is formed, preceding flue after burning coal change is effectively controlled（1）And rear pass（2）In economizer（4）Export gas temperature windage.Front and back flue outlet gas temperature windage is larger after the present invention prevents the practical burning coal Parameters variation of power plant, effectively control preheater imports and exports smoke temperature, and then boiler efficiency index is relatively reasonable after ensureing underload or coal quality change, and then safety and the economy of boiler operatiopn are improved, it has a good application prospect.
Description
Technical field
The present invention relates to one kind for flue cascaded structure before and after generating plant pulverized coal boiler economizer.
Background technology
Boiler heating surfaces at different levels include economizer, are designed type selecting according to design coal, while taking into account check coal, and power plant
Burning coal is uncertain in actual moving process, and burning coal is larger compared to design coal, check coal deviation sometimes, runs at this time
Boiler index of correlation changes greatly in journey；In order to ensure that boiler indices are relatively reasonable after underload or coal quality parameter modification,
It is proposed a kind of method for flue arranged in series before and after generating plant pulverized coal boiler economizer.
Invention content
The purpose of the present invention is to solve the above-mentioned problems of the prior art, so provide it is a kind of can effectively control it is low
The variation of flue gas amount and the front and back flue outlet gas temperature windage that occurs are used for before and after boiler after load or coal quality parameter modification
Flue cascaded structure before and after generating plant pulverized coal boiler economizer.
The purpose of the present invention is what is be achieved through the following technical solutions：
One kind being used for flue series arrangement before and after generating plant pulverized coal boiler economizer, including：Preceding flue, rear pass, middle interval
Wall, economizer are divided into two regions, the economizer between the preceding flue and rear pass by the way that midfeather is arranged
Flue and rear pass region before being arranged in, the economizer being arranged in two regions pass through midfeather by pipe and form series connection
Arrangement.
The beneficial effects of the invention are as follows：By using technical scheme of the present invention, by with the application of the invention, and traditional structure
It compares, can effectively control underload or since coal quality changes so that the front and back flue that front and back flue gas amount changes and occurs goes out
Mouth gas temperature windage so that preheater inlet and outlet smoke temperature is relatively reasonable, and then boiler efficiency refers to after guarantee underload or coal quality change
It marks relatively reasonable.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Specific implementation mode
Below in conjunction with attached drawing, the present invention is described in further detail：The present embodiment is being with technical solution of the present invention
Under the premise of implemented, give detailed embodiment, but protection scope of the present invention is not limited to following embodiments.
As shown in Figure 1, one kind involved by the present embodiment is for flue arranged in series before and after generating plant pulverized coal boiler economizer
Structure, including：Preceding flue 1, rear pass 2, midfeather 3, economizer 4, by setting between the preceding flue 1 and rear pass 2
Setting midfeather 3 is divided into two regions, the economizer 4 to be arranged in preceding 2 region of flue 1 and rear pass, be arranged in two
Economizer 4 in region passes through midfeather 3 by pipe and forms arranged in series；
Wherein the front and back flue is arranged in boiler back end ductwork；
The midfeather is arranged in back-end ductwork, plays the role of the front and back flue in interval；
The economizer is arranged in flue region before and after tail portion.
In order to ensure that reheater steam temperature reaches design value when one side underload, flue gas before increasing is generally required
Ratio, when on the other hand practical burning coal parameter differs greatly with designing coal quality, there are larger differences for front and back flue gas ratio
It is different, cause front and back flue low-temperature reheater, low temperature superheater to export smoke temperature there are larger gap, the present invention passes through front and back flue cloth
Economizer is set to reduce front and back flue outlet smoke temperature difference, ensures that pre-heater inlet smoke temperature is not in relatively large deviation.
The foregoing is only a preferred embodiment of the present invention, these specific implementation modes are all based on the present invention
Different realization methods under general idea, and scope of protection of the present invention is not limited thereto, it is any to be familiar with the art
Technical staff in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in, should all cover the present invention
Within protection domain.Therefore, the scope of protection of the invention shall be subject to the scope of protection specified in the patent claim.
Claims (1)
1. one kind being used for flue series arrangement before and after generating plant pulverized coal boiler economizer, including：Preceding flue（1）, rear pass
（2）, midfeather（3）, economizer（4）, which is characterized in that the preceding flue（1）With rear pass（2）Between by setting
Division wall（3）It is divided into two regions, the economizer（4）It is arranged in preceding flue（1）And rear pass（2）Region is arranged in
Economizer in two regions（4）Midfeather is passed through by pipe（3）Form arranged in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810902757.8A CN108730952A (en) | 2018-08-09 | 2018-08-09 | For flue series arrangement before and after generating plant pulverized coal boiler economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810902757.8A CN108730952A (en) | 2018-08-09 | 2018-08-09 | For flue series arrangement before and after generating plant pulverized coal boiler economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108730952A true CN108730952A (en) | 2018-11-02 |
Family
ID=63942554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810902757.8A Pending CN108730952A (en) | 2018-08-09 | 2018-08-09 | For flue series arrangement before and after generating plant pulverized coal boiler economizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108730952A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128443A (en) * | 2011-03-08 | 2011-07-20 | 中国华能集团清洁能源技术研究院有限公司 | Pulverized coal boiler suitable for ultrahigh steam temperature |
| CN102937295A (en) * | 2012-11-20 | 2013-02-20 | 上海锅炉厂有限公司 | Boiler economizer arrangement form suitable for denitration device negative whole process load operation |
| CN104976635A (en) * | 2015-07-02 | 2015-10-14 | 东方电气集团东方锅炉股份有限公司 | Boiler tail exhaust gas heat utilization system |
| CN107366897A (en) * | 2017-07-05 | 2017-11-21 | 国网山东省电力公司电力科学研究院 | A kind of Pollutant in Coal Burning Boiler emission reduction optimization collaboration fume afterheat deep exploitation system |
| CN208967779U (en) * | 2018-08-09 | 2019-06-11 | 哈尔滨锅炉厂有限责任公司 | For flue series arrangement before and after generating plant pulverized coal boiler economizer |
-
2018
- 2018-08-09 CN CN201810902757.8A patent/CN108730952A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128443A (en) * | 2011-03-08 | 2011-07-20 | 中国华能集团清洁能源技术研究院有限公司 | Pulverized coal boiler suitable for ultrahigh steam temperature |
| CN102937295A (en) * | 2012-11-20 | 2013-02-20 | 上海锅炉厂有限公司 | Boiler economizer arrangement form suitable for denitration device negative whole process load operation |
| CN104976635A (en) * | 2015-07-02 | 2015-10-14 | 东方电气集团东方锅炉股份有限公司 | Boiler tail exhaust gas heat utilization system |
| CN107366897A (en) * | 2017-07-05 | 2017-11-21 | 国网山东省电力公司电力科学研究院 | A kind of Pollutant in Coal Burning Boiler emission reduction optimization collaboration fume afterheat deep exploitation system |
| CN208967779U (en) * | 2018-08-09 | 2019-06-11 | 哈尔滨锅炉厂有限责任公司 | For flue series arrangement before and after generating plant pulverized coal boiler economizer |
Non-Patent Citations (1)
| Title |
|---|
| 王定,冯景源: "1025t/h切向燃烧无烟煤自然循环锅炉的设计概况和运行性能", 锅炉技术, no. 05, pages 1 * |
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