CN106122947B - A kind of pulverized-coal fired boiler soot blower system - Google Patents
A kind of pulverized-coal fired boiler soot blower system Download PDFInfo
- Publication number
- CN106122947B CN106122947B CN201610744441.1A CN201610744441A CN106122947B CN 106122947 B CN106122947 B CN 106122947B CN 201610744441 A CN201610744441 A CN 201610744441A CN 106122947 B CN106122947 B CN 106122947B
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- Prior art keywords
- burner hearth
- tertiary air
- boiler
- soot blowing
- pipe
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
- F23C7/02—Disposition of air supply not passing through burner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2202/00—Fluegas recirculation
- F23C2202/30—Premixing fluegas with combustion air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2700/00—Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators
- F23J2700/002—Ash and slag handling in pulverulent fuel furnaces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
Abstract
The present invention relates to a kind of pulverized-coal fired boiler soot blower systems, it includes boiler（13）, boiler（13）Head is provided with burner（14）, burner（14）On be provided with wind inlet three times（1）, boiler（13）Tail portion is disposed with deduster（7）, air-introduced machine（8）And chimney（9）, air-introduced machine（8）With chimney（9）Between access wind turbine three times（11）, wind turbine three times（11）Outlet connect tertiary air main pipe（12）, boiler（13）Burner hearth in be provided with burner hearth tertiary air main pipe（2）With soot blowing manifold（6）, tertiary air main pipe（12）Respectively with burner hearth tertiary air main pipe（2）Wind inlet three times（1）It is connected, burner hearth tertiary air main pipe（2）On be provided with burner hearth tertiary air and be in charge of（3）, soot blowing manifold（6）On be provided with soot blower for boiler hearth（4）With convection current soot blower（5）.A kind of pulverized-coal fired boiler soot blower system of the present invention, it can solve the problems, such as blowing pipe high temperature melt in burner hearth, effectively reduce NOxRaw emissions value.
Description
Technical field
The present invention relates to a kind of pulverized-coal fired boiler soot blower system, especially suitable for the soot blower system of environment-protecting industrial pulverized-coal fired boiler,
It is mainly used for purging and the collection of the burner hearth of boiler and the flyash of convection heating surface.
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, following considerably long in the period of in,
Coal will not change as the status of the main body energy.With the research and development and practice of China's more than ten years, the development of industrial coal powder boiler
Significant progress is obtained, industrial coal powder boiler cleans coal dust as fuel using high-quality, high activity, is the backup of natural gas boiler
Or substitute.Its essential attribute includes clean hygiene, and working environment is friendly, system totally-enclosed, and the race of smokeless and dust emits, simultaneously
Environmental protection and energy saving, boiler efficiency and discharge standard are suitable with natural gas boiler.This just determines that industrial coal powder boiler must have
Kind soot blower system, while ash-slag disposal system is closed to avoid the dust pollution in conventional boiler lime-ash discharge process.In combination with
The total NO of combustion processxMechanism of production, reduce NOxOriginal discharge concentration, with reach industrial coal powder boiler cleaning, environmental protection, efficiently
Advantage.
Patent document 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 limitation of its structure leads to burner hearth soot blowing, level-one boiler pair in implementation process
The soot blowing that flowing bundle soot blowing, two level boiler convection restrain three positions carries 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, and tube wall temperature loses the cooling of low-temperature flue gas, burner hearth
Central temperature is up to 1100 DEG C or more, even the heat resisting steel material of 25Ni20 also faces thawing.
Invention content
The technical problems to be solved by the invention are to provide a kind of pulverized-coal fired boiler soot blower system for the above-mentioned prior art, it
It can solve the problems, such as that blowing pipe burner hearth inner face faces high temperature melt, while effectively reduce NOxRaw emissions value.
Technical solution is used by the present invention solves the above problems：A kind of pulverized-coal fired boiler soot blower system, it includes boiler,
The boiler head is provided with burner, and wind inlet three times is provided on the burner, and the boiler tail passes through fume pipe
Road, which is sequentially connected, is provided with deduster, air-introduced machine and chimney, passes through connection on the flue gas pipeline between the air-introduced machine and chimney
Wind turbine, the air outlet of the wind turbine three times connect tertiary air main pipe three times for pipeline access, and the left and right sides is divided in the burner hearth of the boiler
It is not provided with burner hearth tertiary air main pipe and soot blowing manifold, the burner hearth tertiary air main pipe and the vertical burner hearth cross-wise directions of soot blowing manifold
Arrangement, the tertiary air main pipe is divided into two-way, accesses burner hearth tertiary air main pipe all the way, the tertiary air of another way access burner into
Mouthful, horizontally disposed in the burner hearth tertiary air main pipe to there is burner hearth tertiary air to be in charge of, the soot blowing manifold upper edges level side
To soot blower for boiler hearth and convection current soot blower is provided with, the convection current soot blower is located on the inside of 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
Burner hearth soot blowing jet pipe is provided in thorax soot blowing main pipe, the burner hearth tertiary air, which is in charge of, is provided with burner hearth tertiary air branch pipe, described
Burner hearth tertiary air branch pipe is set on the outside of burner hearth soot blowing jet pipe.
The burner hearth soot blowing jet pipe is interrupted soot blowing into burner hearth, and the burner hearth tertiary air branch pipe continues to be sent into three into burner hearth
Secondary wind.
The first round tube lid, first round tube are provided at the top of the burner hearth tertiary air branch pipe and burner hearth soot blowing jet pipe
Lid diameter is identical with burner hearth tertiary air branch pipe diameter, the unilateral side or double of the burner hearth tertiary air branch pipe and burner hearth soot blowing jet pipe
Side offers rectangular spray orifice, and the rectangular spray orifice is located on the downside of the first round tube lid, rectangular on the burner hearth soot blowing jet pipe
Spray orifice is less than the rectangular spray orifice on burner hearth tertiary air branch pipe.
The convection current soot blower includes convection current soot blowing main pipe, and convection current soot blowing jet pipe is provided in the convection current soot blowing main pipe.
Be provided with the second round tube lid at the top of the convection current soot blowing jet pipe, the diameter of the second round tube lid with it is right
Stream soot blowing jet size is identical, and the convection current soot blowing jet pipe unilateral or bilateral offers rectangular spray orifice, the rectangular spray orifice position
On the downside of the second round tube lid.
It is connected to corresponding control valve respectively between the burner hearth tertiary air main pipe, soot blowing manifold, soot blower for boiler hearth.
Compared with prior art, the advantage of the invention is that：
1st, the low temperature drawn from the flue gas pipeline between the air-introduced machine and chimney after boiler tail house outlet（160℃
Below）, clean flue gas as burning tertiary air, burn excessive oxygen quotient by reducing so as to reduce burning NOxProduction quantity；
2nd, the low temperature drawn from the flue gas pipeline between the air-introduced machine and chimney after boiler tail house outlet（160℃
Below）, clean flue gas as burning tertiary air, by reducing fire box temperature so as to reduce NOxProduction quantity；
3rd, the low temperature drawn from the flue gas pipeline between the air-introduced machine and chimney after boiler tail house outlet（160℃
Below）, clean flue gas package burner hearth soot blowing jet pipe outside, 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 soot blowing and convection current soot blowing are integrally arranged, can set soot blowing sequence and frequency on demand.
Description of the drawings
Fig. 1 is a kind of structure diagram of pulverized-coal fired boiler soot blower system of the present invention.
Fig. 2 is the structure diagram of soot blower for boiler hearth in Fig. 1.
Fig. 3 is the structure diagram of burner hearth soot blowing jet pipe in Fig. 2.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the structure diagram of convection current soot blower in Fig. 1.
Fig. 6 is the structure diagram of convection current soot blowing jet pipe in Fig. 5.
Fig. 7 is the left view of Fig. 6.
Wherein：
Burner wind inlet 1 three times
Burner hearth tertiary air main pipe 2
Burner hearth tertiary air is in charge of 3
Burner hearth tertiary air branch pipe 3.1
Soot blower for boiler hearth 4
Burner hearth soot blowing main pipe 4.1
Burner hearth soot blowing jet pipe 4.2
First round tube lid 4.3
Convection current soot blower 5
Convection current soot blowing main pipe 5.1
Convection current soot blowing jet pipe 5.2
Second round tube lid 5.3
Soot blowing manifold 6
Deduster 7
Air-introduced machine 8
Chimney 9
Flue gas pipeline 10
Wind turbine 11 three times
Tertiary air manifold 12
Boiler 13
Burner 14
Connecting line 15.
Specific embodiment
The present invention is described in further detail below in conjunction with attached drawing embodiment.
As shown in Fig. 1 ~ Fig. 5, a kind of pulverized-coal fired boiler soot blower system in the present embodiment, it includes boiler 13, the boiler
13 heads are provided with burner 14, and wind inlet 1 three times is provided on the burner 14, and 13 tail portion of boiler passes through fume pipe
Road 10, which is sequentially connected, is provided with deduster 7, air-introduced machine 8 and chimney 9, on the flue gas pipeline 10 between the air-introduced machine 8 and chimney 9
Wind turbine 11 three times are accessed by connecting line 15, the air outlet of the wind turbine three times 11 connects 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 and soot blowing manifold 6, the burner hearth tertiary air main pipe 2 and blow
Grey 6 vertical burner hearth cross-wise directions of manifold arrangement, the tertiary air main pipe 12 are divided into two-way, access burner hearth tertiary air main pipe 2 all the way,
Another way accesses wind inlet 1 three times of burner 14, horizontally disposed in the burner hearth tertiary air main pipe 2 to have burner hearth three times
Wind is in charge of 3, horizontally disposed on the soot blowing manifold 6 to have soot blower for boiler hearth 4 and convection current soot blower 5, the convection current soot blowing
Device 5 is located at 4 inside of soot blower for boiler hearth；
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,
Burner hearth soot blowing jet pipe 4.2 is provided in the burner hearth soot blowing main pipe 4.1, the burner hearth tertiary air, which is in charge of on 3, is provided with burner hearth three
Secondary wind branch pipe 3.1, the burner hearth tertiary air branch pipe 3.1 are set in 4.2 outside of burner hearth soot blowing jet pipe；
The convection current soot blower 5 includes convection current soot blowing main pipe 5.1, and being provided with convection current in the convection current soot blowing main pipe 5.1 blows
Grey jet pipe 5.2,5.2 top of convection current soot blowing jet pipe are provided with the second round tube lid 5.3, the second round tube lid 5.3
Diameter is identical with convection current soot blowing 5.2 diameters of jet pipe, and 5.2 unilateral or bilateral of convection current soot blowing jet pipe offers rectangular spray
Hole, the rectangular spray orifice are located at 5.3 downside of the second round tube lid, and the injection hole site of convection current soot blowing jet pipe is higher than membrane wall pipe most
Eminence；
It is connected to corresponding control valve respectively between the burner hearth tertiary air main pipe 2, soot blowing manifold 6, soot blower for boiler hearth 4；
The burner hearth tertiary air branch pipe 3.1 is from trepanning among burner hearth membrane wall band steel, with band steel sealing welding；
The burner hearth tertiary air branch pipe 3.1 and 4.2 top of burner hearth soot blowing jet pipe are provided with the first round tube lid 4.3, described
First round tube lid, 4.3 diameter is identical with burner hearth tertiary air 3.1 diameters of branch pipe, the burner hearth tertiary air branch pipe 3.1 and stove
The unilateral or bilateral of thorax soot blowing jet pipe 4.2 offers rectangular spray orifice, and the rectangular spray orifice is located under the first round tube lid 4.3
Side, the rectangular spray orifice on the burner hearth soot blowing jet pipe 4.2 are less than the rectangular spray orifice on burner hearth tertiary air branch pipe 3.1 so that burner hearth
The injection hole site of soot blowing jet pipe is higher than membrane wall pipe highest point, and soot blowing air-flow is avoided directly to be blown membrane wall pipe, avoids blowing
Damage of the grey air-flow to burner hearth membrane wall pipe.
Compressed air of the sootblowing dielectric for 0.6Mpa or so, compressed air is with the setpoint frequency of 5-10min, to burner hearth bottom
It is periodically blown, injection frequency can be adjusted according to ash quantity.Lasting burner hearth tertiary air air-flow is to being in burner hearth hot environment
The burner hearth soot blowing jet pipe worked intermittently plays the role of cooling down, while low temperature（Less than 160 DEG C）It is clean（Bag filter goes out
Suck 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, it not only can be to avoid Boiler Furnace slagging（It is burnt）, heat transfer deterioration, and NO can be effectively reducedxProduction quantity, with coal
Powder Industrial Boiler " coal dust concentrated phase（It catches fire）Burning tissues, stable burning room's semi-gas burning tissues, the mild burning tissues of burner hearth "
Technological thought is perfectly in harmony.
The low temperature drawn from the flue gas pipeline between the air-introduced machine and chimney after boiler tail house outlet（160 DEG C with
Under）, clean flue gas distributed by burner hearth tertiary air main pipe to burner hearth tertiary air branch pipe, burner hearth tertiary air branch pipe is set in burner hearth
The outside of soot blowing jet pipe in the gap that burner hearth soot blowing jet pipe stops injection to being continuously fed to tertiary air in burner hearth, reduces burner hearth and blows
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 gas flow is by flyash band in burner hearth
To the flow at burner hearth rear portion；Convection current soot blowing jet pipe will be blown afloat with the flyash of convective region bottom to suspension on convection heating surface
State is collected together with the dust stratification of burner hearth in band to the bag filter of boiler tail.
The flyash that industrial coal powder boiler generates is the good raw materials for production of building materials enterprise, the flyash that pulverized-coal fired boiler generates
It can focus on and apply, not only without secondary dirt into Hui Ta through the dispatch of closed system Geldart-D particle after being collected by bag filter
Dye, and construct good Mode of Circular.
In addition to the implementation, it is all to use equivalent transformation or equivalent replacement the invention also includes there is an other embodiment
The technical solution that mode is formed should all be fallen within the scope of the hereto appended claims.
Claims (6)
1. a kind of pulverized-coal fired boiler soot blower system, it is characterised in that：It includes boiler（13）, the boiler（13）Head is provided with combustion
Burner（14）, the burner（14）On be provided with wind inlet three times（1）, the boiler（13）Tail portion passes through flue gas pipeline（10）
It is sequentially connected and is provided with deduster（7）, air-introduced machine（8）And chimney（9）, the air-introduced machine（8）With chimney（9）Between fume pipe
Road（10）On pass through connecting line（15）Access wind turbine three times（11）, the wind turbine three times（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 manifold（6）, institute
State burner hearth tertiary air main pipe（2）With soot blowing manifold（6）Vertical burner hearth cross-wise direction arrangement, the tertiary air main pipe（12）It is divided into two
Burner hearth tertiary air main pipe is accessed on road all the way（2）, another way access burner（14）Wind inlet three times（1）, the burner hearth is three times
Wind main pipe（2）It is above horizontally disposed to there is burner hearth tertiary air to be in charge of（3）, the soot blowing manifold（6）It is upper horizontally disposed
There is soot blower for boiler hearth（4）With convection current soot blower（5）, the convection current soot blower（5）Positioned at soot blower for boiler hearth（4）Inside；
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）Cloth in the horizontal direction
It puts, 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）Upper setting
There is burner hearth tertiary air branch pipe（3.1）, the burner hearth tertiary air branch pipe（3.1）It is set in burner hearth soot blowing jet pipe（4.2）Outside.
2. a kind of pulverized-coal fired boiler soot blower system according to claim 1, it is characterised in that：The burner hearth soot blowing jet pipe
（4.2）It is interrupted soot blowing, the burner hearth tertiary air branch pipe into burner hearth（3.1）Continue to be sent into tertiary air into burner hearth.
3. a kind of pulverized-coal fired boiler soot blower system according to claim 1, it is characterised in that：The burner hearth tertiary air branch pipe
（3.1）With burner hearth soot blowing jet pipe（4.2）Top is provided with the first round tube lid（4.3）, the first round tube lid（4.3）Diameter
Size and burner hearth tertiary air branch pipe（3.1）Diameter is identical, the burner hearth tertiary air branch pipe（3.1）With burner hearth soot blowing jet pipe（4.2）
Unilateral or bilateral offer rectangular spray orifice, the rectangular spray orifice is located at the first round tube lid（4.3）Downside, the burner hearth are blown
Grey jet pipe（4.2）On rectangular spray orifice be less than burner hearth tertiary air branch pipe（3.1）On rectangular spray orifice.
4. a kind of pulverized-coal fired boiler soot blower system according to claim 1, it is characterised in that：The convection current soot blower（5）Packet
Include convection current soot blowing main pipe（5.1）, the convection current soot blowing main pipe（5.1）On be provided with convection current soot blowing jet pipe（5.2）.
5. a kind of pulverized-coal fired boiler soot blower system according to claim 4, it is characterised in that：The convection current soot blowing jet pipe
（5.2）Top is provided with the second round tube lid（5.3）, the second round tube lid（5.3）Diameter and convection current soot blowing spray
Pipe（5.2）Diameter is identical, the convection current soot blowing jet pipe（5.2）Unilateral or bilateral offers rectangular spray orifice, the rectangular spray orifice
Positioned at the second round tube lid（5.3）Downside.
6. a kind of pulverized-coal fired boiler soot blower system according to claim 1, it is characterised in that：The burner hearth tertiary air main pipe
（2）, soot blowing manifold（6）, soot blower for boiler hearth（4）Between be connected to corresponding control valve respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610744441.1A CN106122947B (en) | 2016-08-29 | 2016-08-29 | A kind of pulverized-coal fired boiler soot blower system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610744441.1A CN106122947B (en) | 2016-08-29 | 2016-08-29 | A kind of pulverized-coal fired boiler soot blower system |
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| Publication Number | Publication Date |
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| CN106122947A CN106122947A (en) | 2016-11-16 |
| CN106122947B true CN106122947B (en) | 2018-06-12 |
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ID=57272734
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610744441.1A Active CN106122947B (en) | 2016-08-29 | 2016-08-29 | A kind of pulverized-coal fired boiler soot blower system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108592012B (en) * | 2018-04-13 | 2019-10-22 | 云南农业大学 | A kind of biomass combustion furnace of high effect cleaning |
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| CN202938321U (en) * | 2012-12-03 | 2013-05-15 | 唐山市金沙工贸有限公司 | Soot blower system of pulverized coal fired boiler |
| CN203162930U (en) * | 2013-03-11 | 2013-08-28 | 西安交通大学 | High potassium-sodium content fuel-fired flue gas recycling boiler system |
| CN103759279A (en) * | 2014-02-19 | 2014-04-30 | 国家电网公司 | Soot blowing system of coal-fired boiler heating surface |
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| CN206145665U (en) * | 2016-08-29 | 2017-05-03 | 江苏双良锅炉有限公司 | Pulverized coal boiler soot blower system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003268400A1 (en) * | 2002-09-09 | 2004-03-29 | Aptech Engineering Services, Inc. | Method for reduction of slagging and fouling of the waterwalls and of the firebox and superheater and reheater of steam boilers with coal combustion |
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2016
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202938321U (en) * | 2012-12-03 | 2013-05-15 | 唐山市金沙工贸有限公司 | Soot blower system of pulverized coal fired boiler |
| CN203162930U (en) * | 2013-03-11 | 2013-08-28 | 西安交通大学 | High potassium-sodium content fuel-fired flue gas recycling boiler system |
| CN103759279A (en) * | 2014-02-19 | 2014-04-30 | 国家电网公司 | Soot blowing system of coal-fired boiler heating surface |
| CN105042578A (en) * | 2015-08-15 | 2015-11-11 | 湖南博茂节能环保科技有限公司 | Coal and tobacco stem multi-fuel-fired boiler and contaminant control method thereof |
| CN105864748A (en) * | 2016-04-19 | 2016-08-17 | 上海理工大学 | Combined combustion system of chain boiler |
| CN206145665U (en) * | 2016-08-29 | 2017-05-03 | 江苏双良锅炉有限公司 | Pulverized coal boiler soot blower system |
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| CN106122947A (en) | 2016-11-16 |
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