CN206257657U - The high-temperature flue gas EGR of high temperature corrosion is prevented for PI type boilers - Google Patents
The high-temperature flue gas EGR of high temperature corrosion is prevented for PI type boilers Download PDFInfo
- Publication number
- CN206257657U CN206257657U CN201620893185.8U CN201620893185U CN206257657U CN 206257657 U CN206257657 U CN 206257657U CN 201620893185 U CN201620893185 U CN 201620893185U CN 206257657 U CN206257657 U CN 206257657U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- flue
- type
- boiler
- type boiler
- 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.)
- Active
Links
Abstract
A kind of high-temperature flue gas EGR for preventing high temperature corrosion for PI type boilers.Most domestic power plant all employs low nitrogen grading combustion technology, but the application of grading combustion technology so that and main burner region is chronically under high-temperature reductibility atmosphere, and the region is easy to the phenomenon that high temperature corrosion occurs.The utility model composition includes：PI type boiler smoking mouths（1）, PI type boiler smokings mouth is installed in PI type boiler furnaces（2）The high-temperature flue gas area in exit, PI types boiler smoking mouth and flue gas recycled flue（3）Connection, has blower fan on flue gas recycled flue（4）, flue gas recycled flue and expansion joint（5）Connection, expansion joint is by flue and PI type boiler smoke spouts（6）Connection, PI type boiler smokes spout is arranged on the hearth region that high temperature corrosion easily occurs, and PI types boiler furnace passes through flue and deduster（7）Connection.The utility model is applied to PI type pulverized-coal fired boiler high temperature corrosion resistances.
Description
Technical field：
The utility model is related to a kind of high-temperature flue gas EGR for preventing high temperature corrosion for PI type boilers.
Background technology：
At present, most domestic power plant all employs low nitrogen grading combustion technology, the discharge for reducing nitrogen oxides；But
It is the application of grading combustion technology so that main burner region is chronically under high-temperature reductibility atmosphere, the region is easy to hair
The phenomenon of raw high temperature corrosion, even if existing combustion technology prevents the generation of phenomenon here, but effect by designing the thoughts such as adherent wind
Fruit is not obvious；Simultaneously very big plus the fluctuation of burning coal sulfur content, the sulfur content of many atures of coal is very high, more exacerbates in stove
Because the problem booster phenomenon of high temperature corrosion takes place frequently in the situation of water wall high temperature corrosion, stove, the safety of boiler has been had a strong impact on
Stable operation, in the unit that this phenomenon generally existing is run with the country.
The content of the invention：
The purpose of this utility model be to provide it is a kind of for PI type boilers prevent high temperature corrosion high-temperature flue gas recycle dress
Put.
Above-mentioned purpose is realized by following technical scheme：
A kind of high-temperature flue gas EGR for preventing high temperature corrosion for PI type boilers, its composition includes：PI type boilers
Smoking mouth, described PI type boiler smokings mouth is arranged on the high-temperature flue gas area at PI type boiler furnace outlets, described PI types pot
Stove smoking mouth is connected with flue gas recycled flue, has recirculation blower on described flue gas recycled flue, and described follows again
Ring flue gases duct is connected with expansion joint, and described expansion joint is connected by flue with PI type boiler smoke spouts, described
PI type boiler smokes spout is arranged on the hearth region that high temperature corrosion easily occurs, described PI types boiler furnace by flue with
Deduster is connected.The beneficial effects of the utility model：
The utility model prevents the smoking mouthful of the high-temperature flue gas recirculating technique of high temperature corrosion for PI type boilers according to reality
Border situation is arranged in the high-temperature flue gas region at PI type boiler furnace outlets, higher by fully burning, oxygen amount to extract
High-temperature flue gas, by after flue, in the presence of flue gas blower fan, the spout being arranged on PI type boiler furnaces is injected into flue gas
Easily there is the nearly water-cooled wall region of high temperature corrosion, significantly reduce the S compounds of nearly water-cooled wall region（H2S）Concentration, reduce
There is the probability of high temperature corrosion, due to that only need to form one layer of wind film in nearly PI types boiler water wall region to prevent the S in flue gas
Compound（H2S）Contact water-cooling wall, therefore required exhaust gas volumn very little, do not interfere with the overall caloric receptivity proportioning of PI type boiler boilers, together
When, blower fan is devised on the flue, ensure that fully burning, oxygen amount high-temperature flue gas higher have enough pressure in nearly PI types
Boiler water wall region forms the wind film of high speed.
The utility model is applied on generating plant pulverized coal boiler, can effectively reduce the H of nearly water-cooled wall region2S concentration, Neng Gou great
Width slows down the high temperature corrosion phenomenon of water-cooling wall so that boiler safe and stable can run.
Brief description of the drawings：
Accompanying drawing 1 is structural representation of the present utility model.
Specific embodiment：
Embodiment 1：
A kind of high-temperature flue gas EGR for preventing high temperature corrosion for PI type boilers, its composition includes：PI type boilers
Smoking mouth 1, described PI type boiler smokings mouth is arranged on the high-temperature flue gas area in the exit of PI types boiler furnace 2, described PI types
Boiler smoking mouth is connected with flue gas recycled flue 3, has blower fan 4, described recycling on described flue gas recycled flue
Flue gases duct is connected with expansion joint 5, and described expansion joint is connected by flue with PI type boiler smokes spout 6, described
PI type boiler smokes spout is arranged on the hearth region that high temperature corrosion easily occurs, described PI types boiler furnace by flue with
Deduster 7 is connected.
Claims (1)
1. a kind of high-temperature flue gas EGR for preventing high temperature corrosion for PI type boilers, its composition includes：Extract through overcharging
The PI type boiler smoking mouths of divided combustion, oxygen amount high-temperature flue gas higher, it is characterized in that：Described PI type boiler smokings mouth is arranged on PI
High-temperature flue gas area at type boiler furnace outlet, described PI type boiler smoking mouths are connected with flue gas recycled flue, described
There is blower fan, described flue gas recycled flue is connected with expansion joint on flue gas recycled flue, described expansion joint passes through cigarette
Feed channel is connected with PI type boiler smoke spouts, and described PI type boiler smokes spout is arranged on easily occurs the burner hearth of high temperature corrosion
On region, and the spout being arranged on PI type boiler furnaces is injected into and the nearly water-cooled wall region of high temperature corrosion, institute easily occurs
The PI types boiler furnace stated is connected by flue with deduster；Described blower fan is available to the pressure of high-temperature flue gas so that high temperature
Flue gas has enough pressure that the blower fan of the wind film of high speed is formed in nearly water-cooled wall region, and one layer of wind is formed in nearly water-cooled wall region
Film contacts water-cooling wall preventing sulfide in flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620893185.8U CN206257657U (en) | 2016-08-17 | 2016-08-17 | The high-temperature flue gas EGR of high temperature corrosion is prevented for PI type boilers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620893185.8U CN206257657U (en) | 2016-08-17 | 2016-08-17 | The high-temperature flue gas EGR of high temperature corrosion is prevented for PI type boilers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206257657U true CN206257657U (en) | 2017-06-16 |
Family
ID=59022943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620893185.8U Active CN206257657U (en) | 2016-08-17 | 2016-08-17 | The high-temperature flue gas EGR of high temperature corrosion is prevented for PI type boilers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206257657U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647158A (en) * | 2019-02-28 | 2019-04-19 | 兖矿集团有限公司 | A kind of circulating fluidized bed boiler flue gas desulfurization and denitrification system and its processing method |
-
2016
- 2016-08-17 CN CN201620893185.8U patent/CN206257657U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647158A (en) * | 2019-02-28 | 2019-04-19 | 兖矿集团有限公司 | A kind of circulating fluidized bed boiler flue gas desulfurization and denitrification system and its processing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109574523B (en) | Lime kiln for directly burning high-temperature coal gas of gasification furnace in hot feeding manner | |
| CN105864748A (en) | Combined combustion system of chain boiler | |
| CN105299626A (en) | Combustion system and combustion method for retarding slagging and contamination of high-alkali coal boiler for combustion | |
| CN107525067B (en) | Central powder feeding rotational flow pulverized coal combustion device capable of preventing slag bonding of water-cooled wall | |
| CN206257659U (en) | The middle temperature flue gas recirculation device of high temperature corrosion is prevented for PI type boilers | |
| CN206257657U (en) | The high-temperature flue gas EGR of high temperature corrosion is prevented for PI type boilers | |
| CN203785241U (en) | Thrice combusting hot-air boiler | |
| CN203718753U (en) | Composite combustion device | |
| CN206257688U (en) | The middle temperature flue gas recirculation device of high temperature corrosion is prevented for tower boiler | |
| CN206257660U (en) | The low-temperature flue gas EGR of high temperature corrosion is prevented for PI type boilers | |
| CN202501450U (en) | Self-circulation pulverized coal furnace device | |
| CN102588953B (en) | Self-circulation type pulverized coal furnace device | |
| WO2015085653A1 (en) | Power generating method of carbon-molecule gasification combustion boiler | |
| CN206257658U (en) | The low-temperature flue gas EGR of high temperature corrosion is prevented for tower boiler | |
| CN205065700U (en) | Novel high -efficiency biological matter combustor | |
| CN205447721U (en) | Environment -friendly gasification gas fires chain bar stove | |
| CN204534544U (en) | Biomass boiler denitration burner and double burner biomass boiler | |
| CN110887037B (en) | Low-nitrogen combustion device for enhancing pulverized coal gasification | |
| CN206257685U (en) | The high-temperature flue gas EGR of high temperature corrosion is prevented for tower boiler | |
| CN209801462U (en) | Chain furnace with flue gas recirculation | |
| CN113587083A (en) | Grate furnace primary air distribution adjusting device and adjusting method | |
| CN102607049A (en) | Technology for combusting pulverized coal fed by circulating air for industrial boiler | |
| CN106090893A (en) | A kind of high performance clean burning method of coal-burning boiler | |
| CN204756923U (en) | A middle part lacks gas burner for dry boiler of brown coal | |
| CN207405131U (en) | Oxygen-rich gasification gas genderating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |