CN206145692U - Pulverized coal boiler furnace soot blower - Google Patents
Pulverized coal boiler furnace soot blower Download PDFInfo
- Publication number
- CN206145692U CN206145692U CN201620964189.0U CN201620964189U CN206145692U CN 206145692 U CN206145692 U CN 206145692U CN 201620964189 U CN201620964189 U CN 201620964189U CN 206145692 U CN206145692 U CN 206145692U
- Authority
- CN
- China
- Prior art keywords
- burner hearth
- tertiary air
- soot blowing
- boiler
- pipe
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a pulverized coal boiler furnace soot blower, it includes boiler (13), boiler (13) head is provided with combustor (14), be provided with tertiary air import (1) on combustor (14), boiler (13) afterbody has set gradually dust remover (7), draught fan (8) and chimney (9), insert cubic fan (11) between draught fan (8) and chimney (9), the export of cubic fan (11) connects the female pipe of tertiary air (12), be provided with the female pipe of furnace tertiary air (2) in the furnace of boiler (13) and blow grey house steward (6), the female pipe of tertiary air (12) is connected with female pipe of furnace tertiary air (2) and tertiary air import (1) respectively, it is in charge of (3) to be provided with the furnace tertiary air on the female pipe of furnace tertiary air (2), it is provided with furnace soot blower (4) on grey house steward (6) to blow. The utility model relates to a pulverized coal boiler furnace soot blower, the blowing pipe faced the problem that high temperature melts in it can solve furnace, effectively reduced the original emission value of NOx simultaneously.
Description
Technical field
This utility model is related to a kind of Pulverized Coal fired Boiler Furnace soot blower, is particularly well-suited to blowing for environment-protecting industrial pulverized-coal fired boiler
Ash system, is mainly used in the purging of the burner hearth bottom flyash of boiler.
Background technology
The resources characteristic of China's few gas rich in coal and poor in oil determines that coal is the main body energy, in the period of future is considerably long in,
Coal will not change as the status of the main body energy.With the research and development and practice, the development of industrial coal powder boiler of China's more than ten years
Achieved with significant progress, industrial coal powder boiler cleans coal dust as fuel with high-quality, high activity, is the backup of natural gas boiler
Or succedaneum.Its essential attribute includes clean hygiene, and working environment is friendly, system total enclosing, and smokeless and dust runs and emits, while
Environmental protection and energy saving, boiler efficiency and discharge standard it is suitable with natural gas boiler.This just determines that industrial coal powder boiler must possess
Kind soot blower system, while the dust pollution during ash-slag disposal system is closed to avoid conventional boiler lime-ash discharge process.In combination with
The total NO of combustion processxMechanism of production, reduce NOxOriginal discharge concentration, to reach industrial coal powder boiler cleaning, environmental protection, efficiently
Advantage.
Patent documentation CN202938321U discloses a kind of soot blower system of pulverized-coal fired boiler, by the soot blowing of pulverized-coal fired boiler and removes
Dirt, smoke evacuation disjunctor design, high-efficiency environment friendly.But the restriction of its structure causes burner hearth soot blowing, one-level boiler pair in implementation process
Flowing bundle soot blowing, the soot blowing at two grades of boiler convection tube banks, three positions are carried out successively to be blown in turn, due to the temperature in burner hearth
It is higher, the burner hearth soot blowing jet pipe 15 in burner hearth is arranged in after soot blowing is stopped, tube wall temperature loses the cooling of low-temperature flue gas, burner hearth
Central temperature is up to more than 1100 DEG C, even the heat resisting steel material of 25Ni20 also faces thawing.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Pulverized Coal fired Boiler Furnace for above-mentioned prior art to blow
Apparatus for ash, it can solve the problem that blowing pipe faces the problem of high temperature melt in burner hearth, while effectively reducing NOxRaw emissions value.
The technical scheme in the invention for solving the above technical problem is：A kind of Pulverized Coal fired Boiler Furnace soot blower, it
Including boiler, the boiler head is provided with burner, and tertiary air import is provided with the burner, and the boiler tail leads to
Cross flue gas pipeline and be sequentially connected and be provided with cleaner unit, air-introduced machine and chimney, on the flue gas pipeline between the air-introduced machine and chimney
Tertiary air machine is accessed by connecting line, the air outlet of the tertiary air machine connects tertiary air main pipe, it is left in the burner hearth of the boiler
Right both sides are respectively arranged with burner hearth tertiary air main pipe and soot blowing house steward, burner hearth tertiary air main pipe burner hearth vertical with soot blowing house steward
Cross-wise direction arranges that the tertiary air main pipe is divided into two-way, and burner hearth tertiary air main pipe is accessed all the way, and burner is accessed on another road
Tertiary air import, it is horizontally disposed in the burner hearth tertiary air main pipe to have burner hearth tertiary air to be in charge of, on the soot blowing house steward
It is horizontally disposed to have soot blower for boiler hearth.
The soot blower for boiler hearth includes burner hearth soot blowing main pipe, and the burner hearth soot blowing main pipe is arranged in the horizontal direction, the stove
It is provided with burner hearth soot blowing jet pipe in thorax soot blowing main pipe, the burner hearth tertiary air is in charge of and is provided with burner hearth tertiary air arm, described
Burner hearth tertiary air arm is set in burner hearth soot blowing jet pipe outside.
The burner hearth soot blowing jet pipe is interrupted soot blowing into burner hearth, and the burner hearth tertiary air arm continues to send into three into burner hearth
Secondary wind.
The burner hearth tertiary air arm and burner hearth soot blowing jet pipe top are provided with circular lid, and the circular lid diameter is big
Little identical with burner hearth tertiary air pipe diameter, the unilateral or bilateral of the burner hearth tertiary air arm and burner hearth soot blowing jet pipe is opened up
There is square spray orifice, the square spray orifice is located at circular lid downside, and the square spray orifice on the burner hearth soot blowing jet pipe is less than burner hearth
Square spray orifice on tertiary air arm.
The burner hearth tertiary air main pipe, it is connected to corresponding control valve between soot blowing house steward, soot blower for boiler hearth respectively.
The burner hearth tertiary air arm from burner hearth membrane wall band steel central aperture, with band steel sealing welding.
It is stainless steel that the burner hearth tertiary air arm and burner hearth soot blowing jet pipe are located at burner hearth interior section, positioned at burner hearth
Outside is carbon steel material.
Compared with prior art, the utility model has the advantage of：
1st, the low temperature that the flue gas pipeline between the air-introduced machine and chimney from after boiler tail house outlet is drawn（160℃
Below）, clean flue gas as burning tertiary air, by reducing the excessive oxygen quotient of burning so as to reduce burning NOxGrowing amount；
2nd, the low temperature that the flue gas pipeline between the air-introduced machine and chimney from after boiler tail house outlet is drawn（160℃
Below）, clean flue gas as burning tertiary air, by reducing fire box temperature so as to reduce NOxGrowing amount；
3rd, the low temperature that the flue gas pipeline between the air-introduced machine and chimney from after boiler tail house outlet is drawn（160℃
Below）, clean flue gas wrap up the outside of burner hearth soot blowing jet pipe, stop the gap of injection in burner hearth soot blowing jet pipe, reduce burner hearth
The wall temperature of soot blowing jet pipe, extends burner hearth soot blowing lance life；
4th, burner hearth tertiary air arm, burner hearth soot blowing jet pipe top one side or both sides are provided with square injection hole, the spray of burner hearth soot blowing
Pipe top installs circular lid additional, and purging orientation, blowing force are concentrated, and square injection hole site is higher than membrane wall pipe highest point, it is to avoid blown
Directly injection direct to heating surface tube causes pipe to damage to grey air-flow；
5th, soot blower is stainless steel inside burner hearth, is resistant to burner hearth high temperature；Burner hearth outside is carbon steel material, is saved
Material cost.
Description of the drawings
Fig. 1 is a kind of structural representation of Pulverized Coal fired Boiler Furnace soot blower of this utility model.
Fig. 2 is the structural representation of soot blower for boiler hearth in Fig. 1.
Fig. 3 is the structural representation of burner hearth soot blowing jet pipe in Fig. 2.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the A-A sectional views of Fig. 3.
Wherein：
Burner tertiary air import 1
Burner hearth tertiary air main pipe 2
Burner hearth tertiary air is in charge of 3
Burner hearth tertiary air arm 3.1
Soot blower for boiler hearth 4
Burner hearth soot blowing main pipe 4.1
Burner hearth soot blowing jet pipe 4.2
Circular lid 4.3
Soot blowing house steward 6
Cleaner unit 7
Air-introduced machine 8
Chimney 9
Flue gas pipeline 10
Tertiary air machine 11
Tertiary air house steward 12
Boiler 13
Burner 14
Connecting line 15.
Specific embodiment
This utility model is described in further detail below in conjunction with accompanying drawing embodiment.
As shown in Fig. 1 ~ Fig. 5, a kind of Pulverized Coal fired Boiler Furnace soot blower in the present embodiment, it includes boiler 13, described
The head of boiler 13 is provided with burner 14, and tertiary air import 1 is provided with the burner 14, and the afterbody of the boiler 13 passes through cigarette
Air pipe 10 is sequentially connected and is provided with cleaner unit 7, air-introduced machine 8 and chimney 9, the flue gas pipeline between the air-introduced machine 8 and chimney 9
Tertiary air machine 11 is accessed by connecting line 15 on 10, the air outlet of the tertiary air machine 11 connects tertiary air main pipe 12, the pot
The left and right sides is respectively arranged with burner hearth tertiary air main pipe 2 and soot blowing house steward 6, the burner hearth tertiary air main pipe 2 in the burner hearth of stove 13
Arrange that the tertiary air main pipe 12 is divided into two-way with the vertical burner hearth cross-wise direction of soot blowing house steward 6, burner hearth tertiary air is accessed all the way female
The tertiary air import 1 of burner 14 is accessed on pipe 2, another road, horizontally disposed in the burner hearth tertiary air main pipe 2 to have burner hearth
Tertiary air is in charge of 3, horizontally disposed on the soot blowing house steward 6 to have soot blower for boiler hearth 4；
The soot blower for boiler hearth 4 includes burner hearth soot blowing main pipe 4.1, and the burner hearth soot blowing main pipe 4.1 is arranged in the horizontal direction,
It is provided with burner hearth soot blowing jet pipe 4.2 in the burner hearth soot blowing main pipe 4.1, the burner hearth tertiary air is in charge of on 3 and is provided with burner hearth three
Secondary wind arm 3.1, the burner hearth tertiary air arm 3.1 is set in the outside of burner hearth soot blowing jet pipe 4.2；
The burner hearth tertiary air main pipe 2, it is connected to corresponding control valve between soot blowing house steward 6, soot blower for boiler hearth 4 respectively；
The burner hearth tertiary air arm 3.1 from burner hearth membrane wall band steel central aperture, with band steel sealing welding；
The burner hearth tertiary air arm 3.1 and the top of burner hearth soot blowing jet pipe 4.2 are provided with circular lid 4.3, the circle
The diameter of lid 4.3 is identical with burner hearth tertiary air 3.1 diameters of arm, and the burner hearth tertiary air arm 3.1 and burner hearth soot blowing are sprayed
The unilateral or bilateral of pipe 4.2 offers square spray orifice, and the square spray orifice is located at the circular downside of lid 4.3, and the burner hearth blows
Square spray orifice on grey jet pipe 4.2 is less than the square spray orifice on burner hearth tertiary air arm 3.1 so that the injection of burner hearth soot blowing jet pipe
Hole site is higher than membrane wall pipe highest point, it is to avoid soot blowing air-flow is directly blown to membrane wall pipe, it is to avoid soot blowing air-flow is to burner hearth film
The damage of formula wall pipe.
The burner hearth tertiary air arm 3.1 and burner hearth soot blowing jet pipe 4.2 are located at burner hearth interior section for stainless steel, position
It is carbon steel material outside burner hearth.
Sootblowing dielectric is the compressed air of 0.6Mpa or so, compressed air with the setpoint frequency of 5-10min, to burner hearth bottom
Periodically it is blown, injection frequency can be adjusted according to ash quantity.Lasting burner hearth tertiary air air-flow is in burner hearth hot environment
The burner hearth soot blowing jet pipe of discontinuous plays a part of cooling down, while low temperature（Less than 160 DEG C）It is clean（Sack cleaner goes out
Mouth containing dust quantity<30mg/Nm3）Flue gas as tertiary air, it is uniform even into burner hearth, fire box temperature field along length of flame direction,
Localized hyperthermia is avoided, Boiler Furnace slagging not only can be avoided（It is burnt）, heat transfer deterioration, and NO can be effectively reducedxGrowing amount, with coal
Powder Industrial Boiler " coal dust concentrated phase（Catch fire）Burning tissues, stable burning room's semi-gas burning tissues, the gentle burning tissues of burner hearth "
Technological thought is perfectly in harmony.
The low temperature that flue gas pipeline between air-introduced machine and chimney from after boiler tail house outlet is drawn（160 DEG C with
Under）, clean flue gas distribute to burner hearth tertiary air arm through burner hearth tertiary air main pipe, burner hearth tertiary air arm is set in burner hearth
The outside of soot blowing jet pipe, the gap of injection is stopped to being continuously fed to tertiary air in burner hearth in burner hearth soot blowing jet pipe, is reduced burner hearth and is blown
The wall temperature of grey jet pipe, extends burner hearth soot blowing lance life.
Burner hearth soot blowing jet pipe blows afloat the flyash of burner hearth bottom to suspended state, and negative-pressure air-flow is by flyash band in burner hearth
To the flow process at burner hearth rear portion, will collect in the sack cleaner of the dust stratification at other positions of boiler together band to boiler tail.
The flyash that industrial coal powder boiler is produced is the good raw materials for production of building materials enterprise, the flyash that pulverized-coal fired boiler is produced
Hui Ta is entered in the air conveying dispatch of Jing closed systems after being collected by sack cleaner, can focus on and apply, not only without secondary dirt
Dye, and construct good Mode of Circular.
In addition to the implementation, this utility model also includes other embodiment, all employing equivalents or equivalent
The technical scheme that substitute mode is formed, all should fall within this utility model scope of the claims.
Claims (7)
1. a kind of Pulverized Coal fired Boiler Furnace soot blower, it is characterised in that：It includes boiler（13）, the boiler（13）Head is arranged
There is burner（14）, the burner（14）On be provided with tertiary air import（1）, the boiler（13）Afterbody passes through flue gas pipeline
（10）It is sequentially connected and is provided with cleaner unit（7）, air-introduced machine（8）And chimney（9）, the air-introduced machine（8）With chimney（9）Between cigarette
Air pipe（10）It is upper to pass through connecting line（15）Access tertiary air machine（11）, the tertiary air machine（11）Air outlet connect tertiary air
Main pipe（12）, the boiler（13）Burner hearth in the left and right sides be respectively arranged with burner hearth tertiary air main pipe（2）With soot blowing house steward
（6）, the burner hearth tertiary air main pipe（2）With soot blowing house steward（6）Vertical burner hearth cross-wise direction arrangement, the tertiary air main pipe（12）
It is divided into two-way, burner hearth tertiary air main pipe is accessed all the way（2）, burner is accessed on another road（14）Tertiary air import（1）, the stove
Thorax tertiary air main pipe（2）It is above horizontally disposed to have burner hearth tertiary air to be in charge of（3）, the soot blowing house steward（6）On along level side
To being provided with soot blower for boiler hearth（4）.
2. a kind of Pulverized Coal fired Boiler Furnace soot blower according to claim 1, it is characterised in that：The soot blower for boiler hearth
（4）Including burner hearth soot blowing main pipe（4.1）, the burner hearth soot blowing main pipe（4.1）Arrange in the horizontal direction, the burner hearth soot blowing main pipe
（4.1）On be provided with burner hearth soot blowing jet pipe（4.2）, the burner hearth tertiary air is in charge of（3）On be provided with burner hearth tertiary air arm
（3.1）, the burner hearth tertiary air arm（3.1）It is set in burner hearth soot blowing jet pipe（4.2）Outside.
3. a kind of Pulverized Coal fired Boiler Furnace soot blower according to claim 2, it is characterised in that：The burner hearth soot blowing jet pipe
（4.2）It is interrupted soot blowing, the burner hearth tertiary air arm into burner hearth（3.1）Continue to send into tertiary air into burner hearth.
4. a kind of Pulverized Coal fired Boiler Furnace soot blower according to claim 2, it is characterised in that：The burner hearth tertiary air
Pipe（3.1）With burner hearth soot blowing jet pipe（4.2）Top is provided with circular lid（4.3）, the circular lid（4.3）Diameter with
Burner hearth tertiary air arm（3.1）Diameter is identical, the burner hearth tertiary air arm（3.1）With burner hearth soot blowing jet pipe（4.2）One side
Or bilateral offers square spray orifice, the square spray orifice is located at circular lid（4.3）Downside, the burner hearth soot blowing jet pipe
（4.2）On square spray orifice be less than burner hearth tertiary air arm（3.1）On square spray orifice.
5. a kind of Pulverized Coal fired Boiler Furnace soot blower according to claim 1, it is characterised in that：The burner hearth tertiary air is female
Pipe（2）, soot blowing house steward（6）, soot blower for boiler hearth（4）Between be connected to corresponding control valve respectively.
6. a kind of Pulverized Coal fired Boiler Furnace soot blower according to claim 2, it is characterised in that：The burner hearth tertiary air
Pipe（3.1）From burner hearth membrane wall band steel central aperture, with band steel sealing welding.
7. a kind of Pulverized Coal fired Boiler Furnace soot blower according to claim 2, it is characterised in that：The burner hearth tertiary air
Pipe（3.1）With burner hearth soot blowing jet pipe（4.2）It is stainless steel positioned at burner hearth interior section, is carbon steel material positioned at burner hearth outside
Matter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620964189.0U CN206145692U (en) | 2016-08-29 | 2016-08-29 | Pulverized coal boiler furnace soot blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620964189.0U CN206145692U (en) | 2016-08-29 | 2016-08-29 | Pulverized coal boiler furnace soot blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206145692U true CN206145692U (en) | 2017-05-03 |
Family
ID=58628472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620964189.0U Withdrawn - After Issue CN206145692U (en) | 2016-08-29 | 2016-08-29 | Pulverized coal boiler furnace soot blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206145692U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196114A (en) * | 2016-08-29 | 2016-12-07 | 江苏双良锅炉有限公司 | A kind of Pulverized Coal fired Boiler Furnace soot blower |
-
2016
- 2016-08-29 CN CN201620964189.0U patent/CN206145692U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196114A (en) * | 2016-08-29 | 2016-12-07 | 江苏双良锅炉有限公司 | A kind of Pulverized Coal fired Boiler Furnace soot blower |
| CN106196114B (en) * | 2016-08-29 | 2018-05-11 | 江苏双良锅炉有限公司 | A kind of Pulverized Coal fired Boiler Furnace soot blower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170503 Effective date of abandoning: 20180511 |