CN208871663U - A kind of boiler supply air system - Google Patents
A kind of boiler supply air system Download PDFInfo
- Publication number
- CN208871663U CN208871663U CN201821458098.5U CN201821458098U CN208871663U CN 208871663 U CN208871663 U CN 208871663U CN 201821458098 U CN201821458098 U CN 201821458098U CN 208871663 U CN208871663 U CN 208871663U
- Authority
- CN
- China
- Prior art keywords
- air
- pipe
- coal
- outlet pipe
- blower
- 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.)
- Expired - Fee Related
Links
- 239000003245 coal Substances 0.000 claims abstract description 33
- 239000003546 flue gas Substances 0.000 claims abstract description 31
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000002817 coal dust Substances 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000012634 fragment Substances 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PIZYHTQSHRQOBI-UHFFFAOYSA-N [C].O=[N] Chemical compound [C].O=[N] PIZYHTQSHRQOBI-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002640 oxygen therapy Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Air Supply (AREA)
Abstract
The utility model relates to a kind of boiler supply air systems, including blast pipe A, blast pipe B and vent line, blast pipe A is connected to blower A, blower A is connected to air preheater by air supply tube A, air preheater is connected to coal pulverizer by hot air pipe B, air preheater is connected to burner hearth by heating pipe A, blast pipe B is connected to blower B, blower B is connected to air supply tube B, air supply tube B includes reheated blast pipe and cool air hose, reheated blast pipe is connected to air preheater, cool air hose is connected to coal pulverizer, coal pulverizer is equipped with coal feeding pipe and coal dust outlet pipe, temperature sensor B is equipped at coal pulverizer coal dust outlet pipe, coal dust outlet pipe is connected to burner hearth, burner hearth is equipped with flue gas outlet pipe, flue gas outlet pipe is connected to air preheater, the utility model structure is simple, convenient operation and control, heat entrained by the flue gas that burning generates more fully is utilized, simultaneously more Add the oxygen supply for accurately controlling temperature and burner hearth in coal pulverizer, reduce excess air coefficient, reduces the harm gas in flue gas.
Description
Technical field
The utility model relates to a kind of boiler supply air systems.
Background technique
Boiler is a kind of energy conversion, and the energy inputted to boiler has chemical energy, electric energy in fuel, boiler output
Steam, high-temperature water or organic heat carrier with certain thermal energy.
In the gas handling system of boiler combustion, need that cold wind is first preheating to certain temperature, mesh by air preheater
Be while to improve intake air temperature in furnace in order to which coal dust is dry and can reduce coal consumption, the intake air temperature of coal dust exists for coal dust
Burning in burner hearth has a great impact, and besides the flue gas after hearth combustion enters the straight tube of economizer bank, heat utilization
Rate is poor, the content of the intake of secondary air for the sulfur dioxide of flue gas, sulfur trioxide and carbon nitrogen oxide after burning
It has a very big impact, directly influences the exhaust-gas treatment in later period.
The utility model is intended to realize hot blast temperature, discharge temperature and the control to air input, improves coal
The burning sufficient degree of powder reduces the content of oxygen-containing harmful substance in flue gas and realizes that the boiler of high-temperature flue gas heat recovery is blown
System.
Utility model content
In view of the deficienciess of the prior art, for overcome the deficiencies in the prior art, a kind of control oxygen therapy amount and control are provided
Temperature optimization processed combines, and improves burning of coal degree, while realizing a kind of boiler supply air system of flue gas heat recycling, is below
Particular technique feature:
A kind of boiler supply air system, including blast pipe A, blast pipe B and vent line, the blast pipe A are connected to blower A,
The blower A is connected to air preheater by air supply tube A, and the air preheater is connected to coal pulverizer by hot air pipe B, dry
Coal dust, the hot wind inlet of the hot air pipe B are equipped with temperature sensor A, and the air preheater also passes through heating pipe A connection furnace
Thorax, the hot air pipe A are equipped with valve A, and the blast pipe B is connected to blower B, and the blower B is connected to air supply tube B, the air supply tube B
Including reheated blast pipe and cool air hose, the reheated blast pipe is connected to the air preheater, the reheated blast Guan Shangshe
There is valve B, the cool air hose is connected to the coal pulverizer, and the cool air hose is equipped with valve C, and the coal pulverizer is equipped with coal feeding pipe
With coal dust outlet pipe, the coal feeding pipe and coal dust outlet pipe are located at the corresponding two sides of the coal pulverizer, the coal pulverizer coal dust outlet pipe
Place is equipped with temperature sensor B, and the coal dust outlet pipe is connected to the burner hearth, and the burner hearth is equipped with flue gas outlet pipe, and the flue gas goes out
Pipe is connected to the air preheater, and the air preheater is also communicated with low-temperature flue gas outlet pipe, the temperature sensor A and temperature
Sensor B and computer end are electrically connected.
The air preheater and the flue gas outlet pipe guarantee connection by flanged joint as a preferred technical solution,
Leakproofness, the air preheater and the low-temperature flue gas outlet pipe pass through flanged joint.
The air preheater includes several economizer banks arranged in parallel, the sky as a preferred technical solution,
Gas economizer bank includes the short tube that several sections are fixedly connected, and sectional area is equal up and down and is greater than intermediate cross-section product for the short tube, is reduced
Laminar sublayer, enhancing heat transfer.
It is equipped with revolving fragment inside the economizer bank inlet end as a preferred technical solution, increases disturbance, reinforces passing
Heat.
The non-ventilating piping connection side of the air preheater is equipped with vacuum layer as a preferred technical solution, prevents heat
It scatters and disappears.
The air inlet of the blower A and blower B is equipped with blinds strainer as a preferred technical solution, separates water, dust
Deng.
By adopting the above-described technical solution, a kind of boiler supply air system, when work, under the action of blower A, air warp
Enter air preheater through blinds strainer boiler by blast pipe A, absorb the heat of economizer bank, form hot-air, heat is empty
Gas enters coal pulverizer through hot air pipe B, is sufficiently mixed and dries with the coal dust in coal pulverizer, empty in blower under the action of blower B
Gas, which is passed through, enters the temperature of air supply tube B, temperature sensor A and temperature sensor B normal through blinds strainer boiler by blast pipe B
In range, then valve C is closed, examines copper valve B, if the temperature of temperature sensor A or temperature sensor B are excessively high, Open valve C,
Prevent coal-grinding built-in temperature excessively high, coal dust firing closes valve B and valve C if the temperature of temperature sensor A is too low, reduces
Cold air flows in air preheater increase the heat absorption of cold air, and the coal dust mixed enters furnace chamber inner combustion, air
Hot-air in preheater enters the oxygen supply of burner hearth completely burned area by hot air pipe A, as coal dust can burn sufficiently, the sky
The input quantity of gas is controlled by valve A, and the high-temperature flue gas after burning enters economizer bank, in revolving fragment and expansion-converging diverging
Under the action of pipe, high-temperature flue gas disturbance increases, and laminar flow layer is thinning, and heat transfer enhancing, the low-temperature flue gas after heat transfer is by low-temperature flue gas pipe
Discharge, the utility model structure is simple, convenient operation and control, and heat entrained by the flue gas that burning generates more fully is utilized
Amount, while the oxygen supply of the more accurate temperature controlled in coal pulverizer and burner hearth, reduce excess air coefficient, reduce cigarette
Harm gas in gas.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Fig. 2 is the structural schematic diagram of the utility model embodiment air preheater；
Fig. 3 is the structural schematic diagram of the utility model embodiment air preheater gas inlet；
In figure: 1- blast pipe A；2- blast pipe B；3- blower A；4- air supply tube A；5- air preheater；6- hot wind
Pipe B；7- coal pulverizer；8- temperature sensor A；9- hot air pipe A；10- burner hearth；11- valve A；12- blower B；13- air-supply
Pipe B；14- reheated blast pipe；15- cool air hose；16- valve B；17- valve C；18- coal feeding pipe；19- coal dust outlet pipe；
20- temperature sensor B；21- flue gas outlet pipe；22- low-temperature flue gas outlet pipe；23- economizer bank；24- flange；25- rotation
Rotor；26- vacuum layer；27- blinds strainer.
Specific embodiment
In order to further illustrate the present invention, it is illustrated with reference to the accompanying drawing:
Embodiment:
As shown in Figure 1 to Figure 3, a kind of boiler supply air system, including blast pipe A1, blast pipe B2 and vent line, it is described
Blast pipe A1 is connected to blower A3, and the blower A3 is connected to air preheater 5 by air supply tube A4, and the air preheater 5 passes through
Hot air pipe B6 is connected to coal pulverizer 7, and the hot wind inlet of the hot air pipe B6 is equipped with temperature sensor A8, and the air preheater 5 is also
It is connected to burner hearth 10 by heating pipe A9, the hot air pipe A9 is equipped with valve A11, and the blast pipe B2 is connected to blower B12, the wind
Machine B12 is connected to air supply tube B13, and the air supply tube B 13 includes reheated blast pipe 14 and cool air hose 15, the reheated blast pipe 14
It is connected to the air preheater 5, the reheated blast pipe 14 is equipped with valve B16, and the cool air hose 15 is connected to the coal-grinding
Machine 7, the cool air hose 15 are equipped with valve C17, and the coal pulverizer 7 is equipped with coal feeding pipe 18 and coal dust outlet pipe 19, the coal feeding pipe
18 and coal dust outlet pipe 19 be located at the corresponding two sides of the coal pulverizer 7,19 are equipped with temperature sensing at the 7 coal dust outlet pipe of coal pulverizer
Device B20, the coal dust outlet pipe 19 are connected to the burner hearth 10, and the burner hearth 10 is equipped with flue gas outlet pipe 21, the flue gas outlet pipe 21
Be connected to the air preheater 5, the air preheater 5 is also communicated with low-temperature flue gas outlet pipe 22, the temperature sensor A8 and
Temperature sensor B20 and computer end are electrically connected.
Further, the air preheater 5 is connect with the flue gas outlet pipe 21 by flange 24, the air preheater
5 pass through flanged joint with the low-temperature flue gas outlet pipe 22.
Further, the air preheater 5 includes several economizer banks 23 arranged in parallel, the economizer bank
23 include the short tube that several sections are fixedly connected, and sectional area is equal up and down and is greater than intermediate cross-section product for the short tube.
Further, revolving fragment 25 is equipped with inside 23 inlet end of economizer bank.
Further, the non-ventilating piping connection side of the air preheater 2 is equipped with vacuum layer 26.
Further, the air inlet of the blower A3 and blower B12 is equipped with blinds strainer 27.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (6)
1. a kind of boiler supply air system, including blast pipe A, blast pipe B and vent line, it is characterised in that: the blast pipe A connects
Ventilation blower A, the blower A are connected to air preheater by air supply tube A, and the air preheater is connected to coal-grinding by hot air pipe B
Machine, the hot wind inlet of the hot air pipe B are equipped with temperature sensor A, and the air preheater also passes through heating pipe A connection burner hearth,
The hot air pipe A is equipped with valve A, and the blast pipe B is connected to blower B, and the blower B is connected to air supply tube B, the air supply tube B packet
Reheated blast pipe and cool air hose are included, the reheated blast pipe is connected to the air preheater, and the reheated blast pipe is equipped with
Valve B, the cool air hose are connected to the coal pulverizer, and the cool air hose is equipped with valve C, the coal pulverizer be equipped with coal feeding pipe and
Coal dust outlet pipe, the coal feeding pipe and coal dust outlet pipe are located at the corresponding two sides of the coal pulverizer, at the coal pulverizer coal dust outlet pipe
Equipped with temperature sensor B, the coal dust outlet pipe is connected to the burner hearth, and the burner hearth is equipped with flue gas outlet pipe, the flue gas outlet pipe
It is connected to the air preheater, the air preheater is also communicated with low-temperature flue gas outlet pipe, and the temperature sensor A and temperature pass
Sensor B and computer end are electrically connected.
2. a kind of boiler supply air system as described in claim 1, it is characterised in that: the air preheater goes out with the flue gas
Pipe passes through flanged joint by flanged joint, the air preheater and the low-temperature flue gas outlet pipe.
3. a kind of boiler supply air system as described in claim 1, it is characterised in that: the air preheater includes several parallel
The economizer bank of arrangement, the economizer bank include the short tube that several sections are fixedly connected, sectional area phase above and below the short tube
Deng and be greater than intermediate cross-section product.
4. a kind of boiler supply air system as claimed in claim 3, it is characterised in that: set inside the economizer bank inlet end
There is revolving fragment.
5. a kind of boiler supply air system as claimed in claim 4, it is characterised in that: the non-through air pipe of air preheater connects
Side is connect equipped with vacuum layer.
6. a kind of boiler supply air system as described in claim 1, it is characterised in that: the air inlet of the blower A and blower B is equal
Equipped with blinds strainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821458098.5U CN208871663U (en) | 2018-09-06 | 2018-09-06 | A kind of boiler supply air system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821458098.5U CN208871663U (en) | 2018-09-06 | 2018-09-06 | A kind of boiler supply air system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208871663U true CN208871663U (en) | 2019-05-17 |
Family
ID=66466971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821458098.5U Expired - Fee Related CN208871663U (en) | 2018-09-06 | 2018-09-06 | A kind of boiler supply air system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208871663U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594775A (en) * | 2019-09-30 | 2019-12-20 | 大唐东营发电有限公司 | Fan unit of thermal power factory |
-
2018
- 2018-09-06 CN CN201821458098.5U patent/CN208871663U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594775A (en) * | 2019-09-30 | 2019-12-20 | 大唐东营发电有限公司 | Fan unit of thermal power factory |
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Legal Events
| 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: 20190517 |