CN104456536B - W-shaped flame boiler with lateral inclination angles of outer-side combustors adjustable - Google Patents
W-shaped flame boiler with lateral inclination angles of outer-side combustors adjustable Download PDFInfo
- Publication number
- CN104456536B CN104456536B CN201410706691.7A CN201410706691A CN104456536B CN 104456536 B CN104456536 B CN 104456536B CN 201410706691 A CN201410706691 A CN 201410706691A CN 104456536 B CN104456536 B CN 104456536B
- Authority
- CN
- China
- Prior art keywords
- air port
- overfire air
- pulverized coal
- pull bar
- coal channel
- 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
- 239000003245 coal Substances 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 210000004894 snout Anatomy 0.000 claims description 31
- 230000033001 locomotion Effects 0.000 claims description 16
- 239000002817 coal dust Substances 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 abstract description 13
- 230000007246 mechanism Effects 0.000 abstract description 6
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 230000004907 flux Effects 0.000 abstract description 5
- 239000002893 slag Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000001464 adherent effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008844 regulatory mechanism Effects 0.000 description 1
Abstract
The invention discloses a W-shaped flame boiler with lateral inclination angles of outer-side combustors adjustable and belongs to the technical field of combustion equipment. The flame boiler is technically characterized in that first adjusting mechanisms for adjusting the lateral inclination angle at which primary air pulverized coal jets are injected into a combustion chamber are mounted on one to three outermost groups of pulverized coal pipelines on two sides, second adjusting mechanisms for adjusting the lateral inclination angle at which secondary air is injected into the combustion chamber are mounted at one to three outermost groups of secondary air nozzles on two sides, and the first adjusting mechanisms and the second adjusting mechanisms are connected through transmission devices. According to the flame boiler, the inwards lateral inclination angles of the outer-side combustors can be adjusted according to running conditions, so that problems that water cooling walls of side walls exceed the temperature and form slag easily and water cooling walls of front and back walls are uneven in thermal flux due to the fact that a flow field deflects towards the two side walls and flames excessively expand towards two sides due to the fact that the lateral arrangement distance of the combustors of the W-shaped flame boiler along the boiler width is longer can be effectively solved.
Description
Technical field
The present invention relates to a kind of flame pulverized-coal fired boiler, more particularly to a kind of W types flame boiler belongs to combustion apparatus technology neck
Domain.
Background technology
W type flames pulverized-coal fired boiler (abbreviation W flame boiler) is widely used in anthracitic power station is burnt in China.
The domed structure of water-cooling wall of lower furnace portion is characterized in, burner arrangement carries the First air air-flow of coal dust from arch on arch
It is upper to spray into burner hearth downwards, and then turn back upwards, Secondary Air is upper from arch and the lower classification of arch feeds, and lays certain amount in lower hearth
Wall with refractory lining, refracto.Operative practice shows that W flame boiler has stronger advantage in combustion stability and low-load combustion-stabilizing ability, has
Beneficial to low volatile coal.But generally existing side water wall easy overtemperature, easy slagging scorification and is asked in the operation of W types flame boiler
Topic, influences the safe and stable operation of whole unit.The reason for such case occur essentially consists in, W type flame boiler burners edge
In on front-back wall arch, coal dust jet sprays into burner hearth to stove lateral arrangement wide parallel to side wall, but the breadth depth ratio of burner hearth is very big, operation
Middle fluid field in furnace is heated the expansion of backward both sides, causes outside burner coal dust jet to both sides deflection, near in addition directly wash away
Side water wall, causes the easy overtemperature of side water wall, slagging scorification, while also increasing front-back wall water-cooling wall heat flux distribution not
Uniformity.
For this problem, the measure taken in the prior art mainly has two kinds, and one kind is adjusted in running, and is reduced
Outside burner output is even switched off outside burner, and this method has open defect, can influence the normal operation of unit；In addition
One kind is to introduce adherent wind to protect side water wall pipe in aileron or side wall.Such as：Chinese patent discloses (Publication No.
CN101050854A, publication date are on May 18th, 2007) one kind《Prevent the W type flame boilers of side wall water cooling wall slagging scorification》, its
Scheme is, near the water screen tube post-tensioning of sidewall section, spout to be formed on side wall both sides by aileron, is then existed by front-back wall bellows
Adherent wind is fed herein, is used to protect side water wall pipe；But this method there is also certain defect, and it is secondary that side wall feeds
Air quantity often very little, momentum is weaker, and the problem that outside burner flame presses close to side wall is improved completely.
The content of the invention
It is an object of the invention to provide the adjustable W types flame boiler of burner cross dip on the outside of one kind, make it in operation
In wind snout in outermost burner and the upper overfire air port of arch can as needed adjust it and be laterally inward inclination
Angle so that offset fluid field in furnace expands influence to outside burner coal dust jet, effectively control side wall water-cooled to both sides
The easy overtemperature of wall, slagging scorification and the uneven problem of front-back wall water-cooling wall heat flux distribution.
Technical scheme is as follows：
A kind of outside adjustable W types flame boiler of burner cross dip, including upper furnace, lower hearth, aileron water-cooling wall,
Side water wall, chimney arch, pulverized coal channel, a wind snout and overfire air port；The pulverized coal channel, a wind snout and secondary
The multigroup lateral arrangement of wind snout point is on chimney arch, it is characterised in that：Installed on one to three group pulverized coal channel of both sides outermost and used
Burner hearth cross dip θ is injected in regulation First air coal dust jet1The first governor motion；In both sides, one to three group of outermost is secondary
Wind snout is installed and injects burner hearth cross dip θ for adjusting Secondary Air2The second governor motion, the first governor motion and second adjust
Section mechanism is connected by transmission device.
First governor motion of the present invention include wind snout rotary shaft, low level expansion joint, high-order expansion joint and
Pulverized coal channel pull bar；Wind snout rotary shaft is arranged in a wind snout lower end, low level expansion joint and high-order expansion joint difference
On pulverized coal channel, pulverized coal channel pull bar is connected by the first bearing pin and the second bearing pin with pulverized coal channel respectively；Second adjusts
Section mechanism includes overfire air port rotary shaft and overfire air port pull bar, and overfire air port rotary shaft is arranged under overfire air port
End, overfire air port pull bar is arranged on overfire air port upper end by the 3rd bearing pin；If the horizontal displacement of pulverized coal channel pull bar with
The ratio between horizontal displacement of overfire air port pull bar is S, and distance is L1, the 3rd pin between the second bearing pin and a wind snout rotary shaft
The distance between axle and overfire air port rotary shaft are L2, i.e. S=L1/L2.
In above-mentioned technical proposal, angle of inclination with two it is lateral in the middle of deflection angles as just, cross dip θ1Adjustable range
It is 0 °<θ1≤ 30 °, cross dip θ2Adjustable range be 0 °<θ2≤30°。
Transmission device of the present invention includes motor, driving wheel, the first driven pulley, the second driven pulley, first gear and the
Two gears, the first driven pulley and the second driven pulley are connected by belt with driving wheel respectively, first gear and pulverized coal channel pull bar
On tooth bar engagement, second gear engages with the tooth bar on overfire air port pull bar.
Technique effect of the present invention with advantages below and high-lighting：1. one to three group burner of both sides outermost in running
Pulverized coal channel and the upper overfire air port of arch can as needed adjust it and be laterally inward inclined angle, offset fluid field in furnace to two
Side expands the influence to outside burner coal dust jet, effectively suppresses the easy overtemperature of side water wall, clogging problems, and improve front and rear
The heat flux distribution of wall water-cooling wall；2. it is adjusted in this way, without exerting oneself for change burning device, to influence on system operation
It is smaller；Suitable inclined angle is chosen according to inner side burner ruuning situation, the influence to inner side burner can be avoided；3. fire
After burner spout is laterally inward inclination, coal dust jet stroke can increased, and can increase coal dust after-flame degree.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram (front view) of W types flame boiler that the present invention is provided.
Fig. 2 is mounted in the structural representation of the first governor motion on pulverized coal channel.
Fig. 3 is mounted in the structural representation of the second governor motion on overfire air port.
Fig. 4 is the structural representation of transmission device.
In figure：1- burners；2- upper furnaces；3- high position expansion joints；4- pulverized coal channels；5- low level expansion joints；6- coal pipes
Road pull bar；Wind snout of 7-；Wind snout rotary shaft of 8-；9- aileron water-cooling walls；10- lower hearths；11- side water walls；
12- overfire air ports；13- chimney arch；14- overfire air port pull bars；15- overfire air port rotary shafts；The fixed Secondary Air sprays of 16-
Mouthful；The bearing pins of 17- first；The bearing pins of 18- second；The bearing pins of 19- the 3rd；20- driving wheels；21- first gears；The driven pulleys of 22- first；
23- second gears；The driven pulleys of 24- second；25- motor output shafts；26- driving belts.
Specific embodiment
Structure of the invention, principle and specific embodiment are described further below in conjunction with the accompanying drawings.
Referring to Fig. 1, a kind of outside adjustable W types flame boiler of burner cross dip that the present invention is provided, including upper stove
The spray of thorax 2, lower hearth 10, aileron water-cooling wall 9, side water wall 11, chimney arch 13,4, wind snout 7 of pulverized coal channel and Secondary Air
Mouth 12, wherein 4, wind snout 7 of pulverized coal channel and 12 points of multigroup lateral arrangements of overfire air port are on chimney arch 13；In both sides most
Installed on one to three outer group pulverized coal channel 4 and inject burner hearth cross dip θ for adjusting First air coal dust jet1First regulation
Mechanism；In both sides, one to three group overfire air port 12 of outermost is installed and injects burner hearth cross dip θ for adjusting Secondary Air2
Two governor motions, the first governor motion and the second governor motion are connected by transmission device.Angle of inclination is lateral middle inclined with two
It is just cross dip θ to angle1Adjustable range be 0 °<θ1≤ 30 °, cross dip θ2Adjustable range be 0 °<θ2≤30°。
As shown in Figure 2 and Figure 3, the first governor motion includes wind snout rotary shaft 8, low level expansion joint 5, a high-order expansion
Section 3 and pulverized coal channel pull bar 6；One time wind snout rotary shaft 8 is arranged in a lower end of wind snout 7, and low level expansion joint 5 and a high position are swollen
Swollen section 3 is separately mounted on pulverized coal channel 4, and pulverized coal channel pull bar 6 passes through the first bearing pin 17 and the second bearing pin 18 and coal dust respectively
Pipeline 4 is connected；Second governor motion includes overfire air port rotary shaft 15 and overfire air port pull bar 14, and overfire air port is rotated
Axle 15 is arranged on the lower end of overfire air port 12, and overfire air port pull bar 14 is arranged on the upper of overfire air port by the 3rd bearing pin 19
End.
Fig. 4 is the structural representation of transmission device, the transmission device include motor, driving wheel 20, the first driven pulley 22,
Second driven pulley 24, first gear 21 and second gear 23, the first driven pulley 22 and the second driven pulley 24 pass through belt 26 respectively
It is connected with driving wheel 20, first gear 21 is engaged with the tooth bar on pulverized coal channel pull bar 6, second gear 23 is drawn with overfire air port
Tooth bar engagement on bar 14.
Operation principle of the invention and the course of work are as follows：
One time breeze airflow is injected in burner hearth from arch, after turn back upwards；Near the outside one of both walls water-cooling wall 11 to
Three groups of burners, under the pulling of pulverized coal channel pull bar 6 and overfire air port pull bar 14, one time breeze airflow can be along width side
To lateral inclination certain angle θ1Into burner hearth, fluid field in furnace can be offset shadow to outside burner coal dust jet is expanded to both sides
Ring, effectively suppress the easy overtemperature of side water wall, clogging problems.Burner 1 and fixed overfire air port 16 in the middle part of burner hearth are still
It is arranged on arch with vertical direction.By taking the adjustment of outermost one group of burner lateral angles as an example, coal pipe is illustrated with reference to Fig. 2-4
Road 4 and the implementation method of the lateral angles of overfire air port 12 regulation.Motor output shaft 25 drives driving wheel 20 to rotate, by passing
Dynamic belt 26 drives radius identical the first driven pulley 22 and the second driven pulley 24 to rotate simultaneously, the first driven pulley 22 and the first tooth
Wheel 21 on same axis, on the second driven pulley 24 and the same axis of second gear 23, therefore first gear 21 and second gear
23 angular speed are identical, and first gear 21 drives coal pipe while driving rotation by the first driven pulley 22 by rack pinion
Road pull bar 6 is moved horizontally, and second gear 23 drives two while driving rotation by the second driven pulley 24 by rack pinion
Secondary wind snout pull bar 14 is moved horizontally, and the ratio between first gear 21 and the radius of second gear 23 are the second bearing pin 18 and a wind snout
Same the ratio between length L2 between 3rd bearing pin 19 and overfire air port rotary shaft 15 of length L1 between rotary shaft 8, so pulverized coal channel
The horizontal displacement L water of pull bar 6 and the horizontal displacement L4 of overfire air port pull bar 14 the ratio between S be also consistently equal to the second bearing pin 18 with
Length L1 is with the ratio between length L2 between the 3rd bearing pin 19 and overfire air port rotary shaft 15 between wind snout rotary shaft 8.Coal
Powder pipeline pull bar 6 pulls a wind snout 7 to be rotated around a wind snout rotary shaft 8 after moving horizontally by the second bearing pin 18, turns
Dynamic radius is length L1 between the second bearing pin 18 and a wind snout rotary shaft 8, and one time the upper end of wind snout 7 passes through low level expansion joint
5 are connected with pulverized coal channel 4, and the upper end of pulverized coal channel 4 passes through high-order expansion joint 3 and is connected with swingable burner 1；Overfire air port draws
Bar 14 pulls overfire air port 12 to be rotated around overfire air port rotary shaft 15 after moving horizontally by the 3rd bearing pin 19, the radius of gyration
It is length L between the 3rd bearing pin 19 and overfire air port rotary shaft 152.Cross dip θ for wind snout 71Equal to arcsin
(L '/L1), the cross dip θ of overfire air port 122Equal to arcsin (L "/L2), due to L '/L "=L1/L2, so First air
The cross dip θ of spout 71The cross dip θ of consistently equal to swingable overfire air port 122.By pulverized coal channel 4 and secondary
The regulation of the cross dip of wind snout 12, realization outside burner coal dust jet is in transverse and vertical direction in certain angle to stove
Thorax center position is injected, and offsets influence of the fluid field in furnace to both sides expansion to outside burner coal dust jet, effectively controls side wall
There is overtemperature, slagging scorification in water-cooling wall, and improves the heat flux distribution of front-back wall water-cooling wall.
Claims (4)
1. a kind of outside adjustable W types flame boiler of burner cross dip, including upper furnace (2), lower hearth (10), aileron water
Cold wall (9), side water wall (11), chimney arch (13), pulverized coal channel (4), a wind snout (7) and overfire air port (12)；Institute
Pulverized coal channel, a wind snout and overfire air port point multigroup lateral arrangement are stated on chimney arch (13), it is characterised in that：In boiler
Installed on one to three group pulverized coal channel (4) of both sides outermost and inject burner hearth along furnace width side for adjusting First air coal dust jet
To cross dip θ1The first governor motion；In both sides, one to three group overfire air port (12) of outermost is installed for adjusting two
Secondary wind injects cross dip θ of the burner hearth along furnace chamber width2The second governor motion, the first governor motion and second regulation machine
Structure is connected by transmission device.
2. a kind of outside adjustable W types flame boiler of burner cross dip according to claim 1, it is characterised in that：
First governor motion includes wind snout rotary shaft (8), low level expansion joint (5), high-order expansion joint (3) and a pulverized coal channel pull bar
(6)；Wind snout rotary shaft (8) is arranged in wind snout (7) lower end, low level expansion joint (5) and high-order expansion joint (3) point
An Zhuan not be on pulverized coal channel (4), pulverized coal channel pull bar (6) passes through the first bearing pin (17) and the second bearing pin (18) and coal dust respectively
Pipeline (4) is connected；Second governor motion includes overfire air port rotary shaft (15) and overfire air port pull bar (14), Secondary Air spray
Installed in overfire air port (12) lower end, overfire air port pull bar (14) is arranged on mouth rotary shaft (15) by the 3rd bearing pin (19)
Overfire air port (12) upper end；
If the ratio between the horizontal displacement of pulverized coal channel pull bar (6) and the horizontal displacement of overfire air port pull bar (14) are S, the second bearing pin
(18) distance is L1 and a wind snout rotary shaft (8) between, between the 3rd bearing pin (19) and overfire air port rotary shaft (15)
Distance be L2, i.e. S=L1/L2.
3. a kind of outside adjustable W types flame boiler of burner cross dip according to claim 1 and 2, its feature exists
In：Angle of inclination with two it is lateral in the middle of deflection angles as just, cross dip θ1Adjustable range be 0 °<θ1≤ 30 °, cross dip
θ2Adjustable range be 0 °<θ2≤30°。
4. a kind of outside adjustable W types flame boiler of burner cross dip according to claim 1 and 2, its feature exists
In：The transmission device includes motor, driving wheel (20), the first driven pulley (22), the second driven pulley (24), first gear (21)
With second gear (23), the first driven pulley (22) and the second driven pulley (24) are connected by belt (26) with driving wheel (20) respectively
Connect, first gear (21) is engaged with the tooth bar on pulverized coal channel pull bar (6), second gear (23) and overfire air port pull bar (14)
On tooth bar engagement；Motor output shaft (25) drive driving wheel (20) rotate, by driving belt (26) at the same drive first from
Driving wheel (22) and the second driven pulley (24) are rotated, and first gear (21) to be driven by the first driven pulley (22) and pass through tooth while rotation
Dynamic pulverized coal channel pull bar (6) of wheel tooth bar transmission belt is moved horizontally, and second gear (23) drives what is rotated by the second driven pulley (24)
Overfire air port pull bar (14) is driven to move horizontally by rack pinion simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410706691.7A CN104456536B (en) | 2014-11-27 | 2014-11-27 | W-shaped flame boiler with lateral inclination angles of outer-side combustors adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410706691.7A CN104456536B (en) | 2014-11-27 | 2014-11-27 | W-shaped flame boiler with lateral inclination angles of outer-side combustors adjustable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104456536A CN104456536A (en) | 2015-03-25 |
| CN104456536B true CN104456536B (en) | 2017-05-17 |
Family
ID=52903022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410706691.7A Active CN104456536B (en) | 2014-11-27 | 2014-11-27 | W-shaped flame boiler with lateral inclination angles of outer-side combustors adjustable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104456536B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737387B (en) * | 2018-12-07 | 2023-08-29 | 华电电力科学研究院有限公司 | Device for preventing high-temperature corrosion of side wall water-cooled wall of opposed combustion boiler and working method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0268403A (en) * | 1988-09-02 | 1990-03-07 | Babcock Hitachi Kk | Solid fuel burner |
| CN101324340A (en) * | 2008-08-05 | 2008-12-17 | 贵州电力试验研究院 | Apparatus for adjusting secondary wind direction under W type flame oven arch |
| CN101430098A (en) * | 2008-12-12 | 2009-05-13 | 哈尔滨工业大学 | Method and apparatus for improving primary air breeze gas flow temperature of W-shaped flame boiler |
| CN201277543Y (en) * | 2008-08-28 | 2009-07-22 | 上海天新热能工程有限公司 | Nozzle horizontal hunting regulation apparatus used for coal powder burner |
| CN202182463U (en) * | 2011-07-15 | 2012-04-04 | 华电电力科学研究院 | Combustion system of W-shaped flame furnace |
| CN202501452U (en) * | 2012-03-15 | 2012-10-24 | 东方电气集团东方锅炉股份有限公司 | W-shaped flame boiler combustion equipment |
| CN204268463U (en) * | 2014-11-27 | 2015-04-15 | 清华大学 | The W type flame boiler that a kind of outside burner cross dip is adjustable |
-
2014
- 2014-11-27 CN CN201410706691.7A patent/CN104456536B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0268403A (en) * | 1988-09-02 | 1990-03-07 | Babcock Hitachi Kk | Solid fuel burner |
| CN101324340A (en) * | 2008-08-05 | 2008-12-17 | 贵州电力试验研究院 | Apparatus for adjusting secondary wind direction under W type flame oven arch |
| CN201277543Y (en) * | 2008-08-28 | 2009-07-22 | 上海天新热能工程有限公司 | Nozzle horizontal hunting regulation apparatus used for coal powder burner |
| CN101430098A (en) * | 2008-12-12 | 2009-05-13 | 哈尔滨工业大学 | Method and apparatus for improving primary air breeze gas flow temperature of W-shaped flame boiler |
| CN202182463U (en) * | 2011-07-15 | 2012-04-04 | 华电电力科学研究院 | Combustion system of W-shaped flame furnace |
| CN202501452U (en) * | 2012-03-15 | 2012-10-24 | 东方电气集团东方锅炉股份有限公司 | W-shaped flame boiler combustion equipment |
| CN204268463U (en) * | 2014-11-27 | 2015-04-15 | 清华大学 | The W type flame boiler that a kind of outside burner cross dip is adjustable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104456536A (en) | 2015-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203231331U (en) | Nozzle capable of swinging laterally and adjustable in outlet area | |
| CN104633652B (en) | Burning system of opposite firing boiler | |
| KR20100061471A (en) | Solid-fuel burner, combustion device using solid-fuel burner, and method of operating the combustion device | |
| CN111207390B (en) | Opposed firing boiler and temperature deviation adjusting method thereof | |
| CN203980331U (en) | Prevent the anti-scorch wind system of four jiaos of serious cokings of " W " stove | |
| CN111256162A (en) | Anti-slagging and anti-coking system and method for blending-burning low-ash-melting-point coal boiler | |
| CN104595892A (en) | Ejecting staged combustion W flame boiler for improving ignition and combustion of pulverized coal | |
| CN103398379A (en) | Oxygen-enriched burner | |
| CN104776419B (en) | A kind of coal-burning boiler high-temperature anticorrosion device with self-cooling function | |
| CN204554801U (en) | Circulating fluid bed boiler secondary air hierarchical arrangement system | |
| CN202082915U (en) | W-shape flame boiler with grading secondary air layout structure | |
| CN104456536B (en) | W-shaped flame boiler with lateral inclination angles of outer-side combustors adjustable | |
| CN106482093B (en) | Opposed firing boiler and flue gas recirculation combustion system using same | |
| CN204358709U (en) | A kind of combustion system of Opposite Firing Boiler | |
| CN204420990U (en) | A kind of ejection grading combustion W flame boiler improving coal powder ignition burning | |
| CN212029567U (en) | Anti-slagging and anti-coking system for blending low ash fusion coal boiler | |
| EP1995517A1 (en) | In-furnace gas injection port | |
| CN102635871A (en) | Method and device for solving contamination of boiler convection heating surface | |
| CN205579544U (en) | Discharge pulverized coal combustion system a little | |
| CN101737773B (en) | Condense-dilute type double-cyclone cylinder pulverized coal burner and pulverized coal boiler using same | |
| CN204268463U (en) | The W type flame boiler that a kind of outside burner cross dip is adjustable | |
| JP6161529B2 (en) | boiler | |
| CN106676252B (en) | A kind of direct flame impingement heater of sheet metal strip | |
| CN106765063A (en) | A kind of Secondary Air is classified burning boiler | |
| CN208365522U (en) | Coal-fired opposed firing boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |