CN106765293A - Forced circulation burning coal powder hot-water boiler - Google Patents
Forced circulation burning coal powder hot-water boiler Download PDFInfo
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- CN106765293A CN106765293A CN201611244903.XA CN201611244903A CN106765293A CN 106765293 A CN106765293 A CN 106765293A CN 201611244903 A CN201611244903 A CN 201611244903A CN 106765293 A CN106765293 A CN 106765293A
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- burner hearth
- wall
- header
- water
- front wall
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
- F23M5/08—Cooling thereof; Tube walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
Abstract
A kind of forced circulation burning coal powder hot-water boiler, it includes boiler body and mixing header, is arranged at the burner of boiler body one end, it is characterized in that boiler body includes connection piping, the furnace wall of burner hearth, water outlet header, connection burner hearth and water outlet header；Burner hearth is enclosed and formed by the left furnace wall of wall, burner hearth, burner hearth right furnace wall, burner hearth top furnace wall and burner hearth bottom furnace wall after burner hearth front wall, burner hearth；The left furnace wall of burner hearth and burner hearth top furnace wall constitute the left wall of burner hearth, burner hearth right furnace wall and burner hearth bottom furnace wall constitute the right wall of burner hearth, and the left wall of burner hearth and the right wall of burner hearth by band steel by welding together the monoblock fin panel casing heating surface for constituting between some L-shaped light pipe laid out in parallel of bending and adjacent L-shaped light pipe；The left wall of burner hearth and the right wall of burner hearth it is positioned opposite and with burner hearth top-right header and burner hearth lower-left header welding composition tower structure, burner hearth top-right header and burner hearth lower-left header connect to form water circulation channel with the light pipe of the left wall of burner hearth and the right wall of burner hearth.
Description
Technical field
This programme is related to 29MW burning coal powder hot-water boilers, specially a kind of forced circulation burning coal powder hot-water boiler.
Background technology
Tube bank is complicated in existing burning coal powder boiler body, is unfavorable for sealing so that furnace wall is using heavy fire resisting
With insulation brick wall, by 345mm laying fireproof bricks, heavier mass；Steelframe design need to consider boiler body and furnace wall gross weight, it is desirable to have
There is certain endurance so that the total steel consumption of boiler is at 140 tons；By multiple rows of down-comer to decline header after drum feedwater,
A plurality of water loop to each heating surface is divided into by decline header again, Water flow-path is complicated；Boiler is using single drum vertical structure, design
Height in 18m and without ash dropping hopper, remove after being not easy to coal dust firing by lime-ash.
The content of the invention
The purpose of this programme is to provide a kind of forced circulation burning coal powder hot-water boiler.
The purpose of this programme is realized by following technical scheme：A kind of forced circulation burning coal powder hot-water boiler, it includes
Boiler body and mixing header, are arranged at the burner of boiler body one end, it is characterized in that boiler body includes burner hearth, water outlet collection
Connection piping, the furnace wall of case, connection burner hearth and water outlet header；Burner hearth is by the left furnace wall of wall, burner hearth, stove after burner hearth front wall, burner hearth
Thorax right furnace wall, burner hearth top furnace wall and burner hearth bottom furnace wall enclose and form.The left furnace wall of burner hearth and burner hearth top furnace wall constitute the left wall of burner hearth, stove
The left wall of thorax is to weld together group by band steel by between some L-shaped light pipe laid out in parallel of bending and adjacent L-shaped light pipe
Into monoblock fin panel casing heating surface.Burner hearth right furnace wall and burner hearth bottom furnace wall constitute the right wall of burner hearth, if the right wall of burner hearth be also by
The monoblock membrane type of composition is welded together between the L-shaped light pipe laid out in parallel of dry root bending and adjacent L-shaped light pipe by band steel
Water wall surface.The left wall of burner hearth and the right wall of burner hearth are positioned opposite and constituted with burner hearth top-right header and burner hearth lower-left header welding
Tower structure, burner hearth top-right header and burner hearth lower-left header connect to form water circulation with the light pipe of the left wall of burner hearth and the right wall of burner hearth
Passage.
The specific feature of this programme also has, and furnace wall is light boiler setting, is directly wrapped on boiler body not with smoke contacts
Aluminosilicate fiberboard is wrapped up in, aluminium silicate fiber is wrapped up after the thick refractory concretes of 80mm are first poured on the boiler body with smoke contacts
Dimension plate；Backplate is coated again in the outside of aluminosilicate fiberboard, using light material aluminosilicate fiberboard, making is simple, it is fast to install,
Low cost, and the amount of stored heat of boiler startup operation furnace wall is small, boiler insulation performance is good, and heat loss is small.
Wall uses film water cold wall structure after burner hearth front wall and burner hearth, i.e., by some light pipe laid out in parallel, adjacent
Welding flat steel between two light pipes, constitutes the film water cold wall structure of monoblock, the water wall surface sealing property of this structure
Good, burner hearth cross-sectional area is big, and volume is big, and heat loss is small, heat loss is reduced while burning beneficial to furnace flame, and then improve pot
Furnace thermal efficiency.
Burner hearth front wall include front wall fin panel casing and the burner hearth front wall upper collecting chamber that is connected with front wall fin panel casing and
Burner hearth front wall lower header, combustion port hole is reserved with front wall fin panel casing center by setting jump pipe in the middle of front wall,
The upper right side of front wall fin panel casing is provided with front wall upper right and jumps pipe, and it is left that the lower left of front wall fin panel casing is provided with front wall
It is lower to jump pipe, it is for the ease of installing burner hearth top-right header, burner hearth lower-left header.
After burner hearth wall include after rear wall fin panel casing and the burner hearth that is connected with rear wall fin panel casing wall upper collecting chamber and
Wall lower header after burner hearth, is jumped pipe in the middle of wall after setting and is reserved with burner hearth exhanst gas outlet in rear wall fin panel casing center,
The upper right side of wall fin panel casing is provided with rear wall upper right and jumps pipe afterwards, and wall is left after the lower left of rear wall fin panel casing is provided with
It is lower to jump pipe, it is for the ease of installing burner hearth top-right header, burner hearth lower-left header.
The left wall of burner hearth constitutes monoblock film-type water-cooling by Welding flat steel between the L-shaped light pipe laid out in parallel and light pipe of some bendings
Wall heating surface, the right wall of burner hearth be also between L-shaped light pipe laid out in parallel and light pipe by some bendings Welding flat steel constitute monoblock film
Formula water wall surface.Act not only as water circulation channel, but also be a part for boiler supports framework, beneficial to water circulation
While can bear the weight of boiler body itself, meet boiler body pressure-bearing, shock resistance is good, without steel frame construction.Meanwhile,
L-shaped structure positioned opposite allows that left and right wall shares header, reduces collection box number and is easily installed.
The inner chamber of burner hearth top-right header is divided into independent three in the two pieces of upper spacers that are internally provided with of burner hearth top-right header
Section.In burner hearth lower-left, the inner chamber of burner hearth bottom right header is divided into independent three sections by the two pieces of lower clapboards that are internally provided with of header, and
Upper spacer and lower clapboard are interspersed up and down makes the left wall of burner hearth and the right wall of burner hearth be separated into 5 membrane walls and be formed up and down in inner chamber
S-shaped circulation canal, circulation canal is formed beneficial to the left wall of burner hearth and the right portion's WATER AS FLOW MEDIUM within the walls of burner hearth.
Water circulation path between boiler body and mixing header is：Boiler feedwater mixes with backwater in mixing header
Afterwards, successively through two grades of water circulation channels of economizer, the water circulation channel of one-level economizer after, point two-way enters boiler body
Water circulation channel：All the way to wall lower header after burner hearth after fin panel casing to burner hearth wall upper collecting chamber, then by wall after burner hearth collect
, through the first connecting tube to burner hearth top-right header, burner hearth top-right header is through the second connecting tube to water outlet header for case；Another road is to burner hearth
After the header of lower-left, through the 3rd connecting tube to burner hearth front wall lower header, then by burner hearth front wall lower header through fin panel casing to burner hearth
Front wall upper collecting chamber, burner hearth front wall upper collecting chamber forms backwater circulation and flows into through the 4th connecting tube to water outlet header, the water outlet of water outlet header
Mixing header.
First connecting tube, the second connecting tube, the 3rd connecting tube and the 4th connecting tube connection seven headers of boiler body, promote
Water circulation.Top-right header side connecting tube has been arranged in parallel on the outside of burner hearth top-right header, it is in parallel on the outside of the header of burner hearth lower-left
Lower-left header side connecting tube is provided with, is to preferably promote header interior media forward to be flowed under the pump pressure that feeds water, keeping away
Exempt to form stagnant water.
The easy slagging scorification of coal-powder boiler burning, ash dropping hopper is provided with below the furnace wall of burner hearth bottom, is located at ash in burner hearth bottom furnace wall
Retain to fall grey passage between light pipe above bucket.
The exhanst gas outlet of boiler body is provided with one-level economizer, the stack base after one-level economizer is provided with
Then ash bucket, flue turns head and is arranged in n fonts downwards and connect denitrification apparatus and two first being upwardly extended above ash dropping hopper
Level economizer.
Before the one-level economizer with two grades of economizers before flue on be provided with soot blower, beneficial to keeping, heating surface is clear
It is clean.Coal dust and air through burner in stove chamber inner combustion after, flue gas is successively through boiler body, one-level economizer, denitrification apparatus, two
Level economizer completes diabatic process.
The beneficial effect of this programme is：
1）Boiler body good seal performance.Boiler body four sides uses membrane wall, and air-tightness is good, greatly reduces burner hearth and leaks out, very
Pressurized firing can be extremely used, membrane wall heat storage capacity is small, and fire box's quick heating, cooling is fast, startup can be shortened and stopped
The stove time, improve boiler thermal output.
2）Simplify furnace wall structure.Membrane wall has good sealing so that boiler is not high to furnace wall sealing requirements, therefore
Furnace wall can use light material aluminosilicate fiberboard.When boiler startup runs, the amount of stored heat of this light boiler setting is small, boiler insulation
Performance is good, and heat loss is small.
3）Save steel.Tower structure and buckstay load-bearing that whole boiler body is made up of header and membrane wall, resist
Pinking is good, without considering that stress carries out particular design on steelframe, while L-shaped or so wall membrane wall is positioned opposite, can make a left side
Right wall shares header so that the total steel consumption of boiler is less than 90 tons.
4) unique water-flow circuit is safe and reliable.Multistage connecting tube is set between boiler body header and left and right wall is upper and lower
Header inside sets dividing plate, and the S-shaped water-flow circuit of uniqueness is formed in boiler body.
5）It is easy to maintenance, energy-conserving and environment-protective.Boiler uses horizontal type structure, designs total height less than 8m, lime-ash after coal dust firing
Vertical height of fall is greatly reduced, and burner hearth bottom sets ash dropped unit and is easy to deashing, while arranging soot blower, keeps heating surface
Cleaning, improves fuel economy.400 DEG C or so flues section between one-level economizer and two grades of economizers installs SCR additional and takes off
Nitre device, effectively prevents from producing excessive NOx to pollute environment in boiler after coal combustion.
Brief description of the drawings
Fig. 1 is boiler structure front view；Fig. 2 is the A-A sectional views of Fig. 1；Fig. 3 is burner hearth front wall；Fig. 4 is wall after burner hearth；
Fig. 5 is the B-B sectional views of Fig. 1；Fig. 6 is the C of Fig. 5 to structural representation；Fig. 7 is the first to five membrane wall connected relation block diagram；
Fig. 8 is boiler water flow chart；Fig. 9 is Water flow-path block diagram.
In figure：1- burners；2- boiler bodies；3- one-level economizers；4- denitrification apparatus；Bis- grades of economizers of 5-；6- falls ash
Bucket；7- blowing pipes；8- burner hearth front walls；Wall after 9- burner hearths；The left wall of 10- burner hearths；The right wall of 11- burner hearths；12- front wall fin panel casings；
13- burner hearth top-right headers；14- burner hearths lower-left header；15- baffle plate devices；16- mixing headers；17- water outlet headers；18- first connects
Adapter；19- top-right headers side connecting tube；20- lower-lefts header side connecting tube；The connecting tubes of 21- second；The connecting tubes of 22- the 3rd；23-
4th connecting tube；24- burner hearth front wall lower headers；25- burner hearth front wall upper collecting chambers；Wall upper collecting chamber after 26- burner hearths；Wall after 27- burner hearths
Lower header；Wall fin panel casing after 28-；Pipe is jumped in the middle of 29- front walls；30- combustion ports hole；31- front walls upper right jumps pipe；32-
Jump pipe in front wall lower-left；Pipe is jumped after 33- in the middle of wall；34- burner hearth exhanst gas outlets；Wall upper right jumps pipe after 35-；Jump pipe in 36- Hou Qiang lower-lefts；
37- lower clapboards.
Specific embodiment
As shown in figure 1, a kind of forced circulation burning coal powder hot-water boiler, it includes boiler body 2 and mixing header 16, sets
In the burner 1 of the one end of boiler body 2, boiler body 2 includes burner hearth, water outlet header 17, connection burner hearth and water outlet header 17
Connection piping, the furnace wall for being coated on the outside of boiler body 2.Burner hearth is by the left furnace wall of wall 9, burner hearth, stove after burner hearth front wall 8, burner hearth
Thorax right furnace wall, burner hearth top furnace wall and burner hearth bottom furnace wall enclose and form.Wherein, the left furnace wall of burner hearth and burner hearth top furnace wall constitute a burner hearth left side
Wall 10, the left wall 10 of burner hearth is welded by band steel by between some L-shaped light pipe laid out in parallel of bending and adjacent L-shaped light pipe
The monoblock fin panel casing heating surface for constituting together.Burner hearth right furnace wall and burner hearth bottom furnace wall constitute the right wall 11 of burner hearth, be also by
The monoblock film of composition is welded together between some L-shaped light pipe laid out in parallel of bending and adjacent L-shaped light pipe by band steel
Formula water wall surface.The left wall 10 of burner hearth and the right wall 11 of burner hearth it is positioned opposite and with burner hearth top-right header 13 and burner hearth lower-left header
14 are welded to form tower structure, burner hearth top-right header 13 and burner hearth lower-left header 14 and the left wall 10 of burner hearth and the right wall 11 of burner hearth
Light pipe connects to form water circulation channel.
Furnace wall is light boiler setting, on boiler body 2 not with smoke contacts directly wrap up aluminosilicate fiberboard, with cigarette
Aluminosilicate fiberboard is wrapped up after the thick refractory concretes of 80mm are first poured on the boiler body 2 of gas contact；In aluminosilicate fiberboard
Outside coat backplate again, using light material aluminosilicate fiberboard, make it is simple, fast, low cost is installed, and boiler startup is transported
The amount of stored heat of row furnace wall is small, and boiler insulation performance is good, and heat loss is small.
As shown in Fig. 2 wall 9 uses film water cold wall structure after burner hearth front wall 8, burner hearth, i.e., some light pipe laid out in parallel,
The Welding flat steel between two adjacent light pipes, the film water cold wall structure of composition monoblock, the water wall surface of this structure,
Good seal performance, burner hearth cross-sectional area is big, and volume is big, and heat loss is small, and heat loss is reduced while burning beneficial to furnace flame, enters
And improve boiler thermal output.
As shown in figure 3, burner hearth front wall 8 includes front wall fin panel casing 12 and the stove connected with front wall fin panel casing 12
Thorax front wall upper collecting chamber 25 and burner hearth front wall lower header 24, in the center of front wall fin panel casing 12 by setting jump pipe 29 in the middle of front wall
Combustion port hole 30 is reserved with, the upper right side of front wall fin panel casing 12 is provided with front wall upper right jumps pipe 31, in front wall film
The lower left of formula water-cooling wall 12 is provided with front wall lower-left and jumps pipe 32, is for the ease of installing burner hearth top-right header 13, burner hearth lower-left
Header 14.
As shown in figure 4, wall 9 includes rear wall fin panel casing 28 and the stove connected with rear wall fin panel casing 28 after burner hearth
Wall lower header 27 after wall upper collecting chamber 26 and burner hearth after thorax, the jump pipe 33 in the middle of wall after the center of rear wall fin panel casing 28 is by setting
Burner hearth exhanst gas outlet 34 is reserved with, wall upper right jumps pipe 35 after the upper right side of rear wall fin panel casing 28 is provided with, in rear wall film
The lower left of formula water-cooling wall 28 is provided with Hou Qiang lower-lefts and jumps pipe 36, is for the ease of installing burner hearth top-right header 13, burner hearth lower-left
Header 14.
As shown in Figure 5 and Figure 6, the left wall 10 of burner hearth welds flat by between the L-shaped light pipe laid out in parallel and light pipe of some bendings
Steel constitute monoblock fin panel casing heating surface, the right wall 11 of burner hearth be also by some bendings L-shaped light pipe laid out in parallel and light pipe it
Between Welding flat steel composition monoblock fin panel casing heating surface.Water circulation channel is acted not only as, but also is boiler supports frame
A part for frame, can bear the weight of boiler body itself while beneficial to water circulation, meet boiler body pressure-bearing, shock resistance
It is good, without steel frame construction.Meanwhile, L-shaped structure positioned opposite allows that left and right wall shares header, reduce collection box number and
It is easily installed.
As shown in Figure 6 and Figure 7, two pieces of upper spacers 15 are internally provided with by burner hearth top-right header in burner hearth top-right header 13
To be divided into independent three sections, i.e. burner hearth top-right header left chamber, burner hearth top-right header intermediate cavity, burner hearth top-right header right for inner chamber
Chamber.In burner hearth lower-left, the inner chamber of burner hearth bottom right header is divided into independent three by the two pieces of lower clapboards 37 that are internally provided with of header 14
Section, i.e. burner hearth lower-left header left chamber, burner hearth lower-left header intermediate cavity, burner hearth lower-left header right chamber room.Meanwhile, upper spacer 15
Being interspersed about 37 with lower clapboard makes the left wall of burner hearth and the right wall of burner hearth be separated into 5 membrane walls and form upper and lower S-shaped in inner chamber
Circulation canal, circulation canal is formed beneficial to the left wall of burner hearth and the right portion's WATER AS FLOW MEDIUM within the walls of burner hearth.I.e. as shown in Figure 7 first to the 5th
Membrane wall and burner hearth top-right header 13 and the connected relation for connecting lower-left header 14.
As shown in Figure 8 and Figure 9 for the water circulation path between boiler body and mixing header is：Boiler feedwater exists with backwater
In mixing header 16 mix after, successively through two grades of water circulation channels of economizer 5, the water circulation channel of one-level economizer 3 after, point
Two-way enters the water circulation channel of boiler body 2：To wall lower header 27 after burner hearth, wall fin panel casing 28 arrives burner hearth after all the way
Wall upper collecting chamber 26 afterwards, then by wall upper collecting chamber 26 after burner hearth through the first connecting tube 18 to burner hearth top-right header 13, burner hearth top-right header
13 through the second connecting tube 21 to water outlet header 17；Another road to after burner hearth lower-left header 14, before the 3rd connecting tube 22 to burner hearth
Wall lower header 24, then by burner hearth front wall lower header 24 through front wall fin panel casing 12 to burner hearth front wall upper collecting chamber 25, burner hearth front wall
Upper collecting chamber 25 forms backwater circulation and flows into mixing header 16 through the 4th connecting tube 23 to water outlet header 17, the water outlet of water outlet header 17.
First connecting tube 18, the second connecting tube 21, the 3rd connecting tube 22 and the 4th connecting tube 23 connection boiler body seven
Header, promotes water circulation.Top-right header side connecting tube 19 is arranged in parallel in the outside of burner hearth top-right header 13, in burner hearth lower-left
The outside of header 14 has been arranged in parallel lower-left header side connecting tube 20, is to preferably promote header interior media to be pumped in feedwater
Forward flowed under power, it is to avoid form stagnant water.
The easy slagging scorification of coal-powder boiler burning, ash dropping hopper 6 is provided with below the furnace wall of burner hearth bottom, is located at ash in burner hearth bottom furnace wall
Retain to fall grey passage between the light pipe of the top of bucket 6, stack base and one-level save coal between furnace outlet and one-level economizer 3
The rear pass of device 3 section bottom sets ash dropping hopper 6, is easy to lime-ash in burner hearth to fall into ash dropping hopper 6 by gap between light pipe.
Before the one-level economizer 3 with two grades of economizers 5 before flue on be provided with soot blower 7, beneficial to keeping being heated
Clean in face.
The exhanst gas outlet of boiler body 2 is provided with one-level economizer 3, the stack base after one-level economizer 3 is set
There is ash dropping hopper 6, flue is first upwardly extended positioned at the top of ash dropping hopper 6, then turn head and arranged in n fonts downwards and connect denitration dress
Put 4 and two grades of economizers 5.
As shown in figure 1, coal dust and air through burner 1 in hearth combustion after, flue gas is saved through boiler body 2, one-level successively
Coal device 3,4, two grades of economizers 5 of denitrification apparatus complete diabatic process.
Flue section cigarette temperature between one-level economizer 3 and two grades of economizers 5 is easy to De-NO_x at 400 DEG C or so
4, can be by the NO in flue gasXThrough catalyst action, by NH3By NOXIt is reduced into harmless N2And H2O, no coupling product is not formed
Secondary pollution.This kind of boiler structure has reliable combustion system, while environmental pollution can be reduced.
Claims (10)
1. a kind of forced circulation burning coal powder hot-water boiler, it includes boiler body and mixing header, is arranged at boiler body one end
Burner, it is characterized in that boiler body include burner hearth, water outlet header, connection burner hearth and water outlet header connection piping, furnace wall；
Burner hearth be to be enclosed by the left furnace wall of wall, burner hearth, burner hearth right furnace wall, burner hearth top furnace wall and burner hearth bottom furnace wall after burner hearth front wall, burner hearth and
Into；The left furnace wall of burner hearth and burner hearth top furnace wall constitute the left wall of burner hearth, and the left wall of burner hearth is by some L-shaped light pipe laid out in parallel of bending
And the monoblock fin panel casing heating surface of composition is welded together between adjacent L-shaped light pipe by band steel；Burner hearth right furnace wall and
Burner hearth bottom furnace wall constitutes the right wall of burner hearth, and the right wall of burner hearth is also by some L-shaped light pipe laid out in parallel of bending and adjacent L-shaped light
The monoblock fin panel casing heating surface of composition is welded together between pipe by band steel；The left wall of burner hearth and the right wall of burner hearth are positioned opposite
And with burner hearth top-right header and burner hearth lower-left header welding composition tower structure, burner hearth top-right header and burner hearth lower-left header with
The left wall of burner hearth connects to form water circulation channel with the light pipe of the right wall of burner hearth.
2. forced circulation burning coal powder hot-water boiler according to claim 1, it is characterized in that furnace wall is light boiler setting, not with
Aluminosilicate fiberboard is directly wrapped up on the boiler body of smoke contacts, 80mm is first poured on the boiler body with smoke contacts thick
Refractory concrete after wrap up aluminosilicate fiberboard；Backplate is coated again in the outside of aluminosilicate fiberboard.
3. forced circulation burning coal powder hot-water boiler according to claim 1, it is characterized in that wall is adopted after burner hearth front wall and burner hearth
With film water cold wall structure, i.e., by some light pipe laid out in parallel, the Welding flat steel between two adjacent light pipes constitutes monoblock
Film water cold wall structure.
4. forced circulation burning coal powder hot-water boiler according to claim 1, it is characterized in that burner hearth front wall includes front wall membrane type
Water-cooling wall and the burner hearth front wall upper collecting chamber connected with front wall fin panel casing and burner hearth front wall lower header, in front wall film-type water-cooling
Wall center is reserved with combustion port hole by setting jump pipe in the middle of front wall, before the upper right side of front wall fin panel casing is provided with
Wall upper right jumps pipe, and the lower left of front wall fin panel casing is provided with front wall lower-left jumps pipe.
5. forced circulation burning coal powder hot-water boiler according to claim 1, it is characterized in that wall includes rear wall membrane type after burner hearth
Wall lower header after wall upper collecting chamber and burner hearth after water-cooling wall and the burner hearth connected with rear wall fin panel casing, in rear wall film-type water-cooling
Wall center wall centre after setting is jumped pipe and is reserved with burner hearth exhanst gas outlet, after the upper right side of rear wall fin panel casing is provided with
Wall upper right jumps pipe, and the lower left of rear wall fin panel casing is provided with Hou Qiang lower-lefts jumps pipe.
6. forced circulation burning coal powder hot-water boiler according to claim 1, it is characterized in that in the inside of burner hearth top-right header
It is provided with two pieces of upper spacers and the inner chamber of burner hearth top-right header is divided into independent three sections；In being internally provided with for burner hearth lower-left header
The inner chamber of burner hearth bottom right header is divided into independent three sections by two pieces of lower clapboards, and upper spacer and lower clapboard are interspersed make stove up and down
The left wall of thorax and the right wall of burner hearth are separated into 5 membrane walls and form upper and lower S-shaped circulation canal in inner chamber, beneficial to the left wall of burner hearth and burner hearth
Right portion's WATER AS FLOW MEDIUM within the walls forms circulation canal.
7. forced circulation burning coal powder hot-water boiler according to claim 1, it is characterized in that boiler body and mixing header it
Between water circulation path be：It is logical through two grades of water circulations of economizer successively after boiler feedwater mixes with backwater in mixing header
After road, the water circulation channel of one-level economizer, point two-way enters the water circulation channel of boiler body：All the way to wall next part after burner hearth
Case wall upper collecting chamber after fin panel casing to burner hearth, then by wall upper collecting chamber after burner hearth through the first connecting tube to burner hearth top-right header,
Burner hearth top-right header is through the second connecting tube to water outlet header；Another road to after the header of burner hearth lower-left, through the 3rd connecting tube to burner hearth
Front wall lower header, then by burner hearth front wall lower header through fin panel casing to burner hearth front wall upper collecting chamber, burner hearth front wall upper collecting chamber is through
To water outlet header, the water outlet of water outlet header forms backwater circulation and flows into mixing header four connecting tubes.
8. forced circulation burning coal powder hot-water boiler according to claim 1, it is characterized in that in the outside of burner hearth top-right header
Top-right header side connecting tube is arranged in parallel, lower-left header side connecting tube has been arranged in parallel on the outside of the header of burner hearth lower-left.
9. forced circulation burning coal powder hot-water boiler according to claim 1, it is characterized in that being set below the furnace wall of burner hearth bottom
Ash dropping hopper is equipped with, is located in burner hearth bottom furnace wall and is retained the grey passage that falls between the light pipe above ash dropping hopper.
10. forced circulation burning coal powder hot-water boiler according to claim 1, it is characterized in that in the exhanst gas outlet of boiler body
One-level economizer is provided with, the stack base after one-level economizer is provided with ash dropping hopper, and flue is first above ash dropping hopper
Upwardly extend, then turn head and arranged in n fonts downwards and connect denitrification apparatus and two grades of economizers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611244903.XA CN106765293A (en) | 2016-12-29 | 2016-12-29 | Forced circulation burning coal powder hot-water boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611244903.XA CN106765293A (en) | 2016-12-29 | 2016-12-29 | Forced circulation burning coal powder hot-water boiler |
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| CN106765293A true CN106765293A (en) | 2017-05-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297016A (en) * | 2018-10-10 | 2019-02-01 | 贵州新能源开发投资股份有限公司 | It is a kind of to mix the circulating fluidized bed boiler front water wall pipe structure for burning coal slime |
-
2016
- 2016-12-29 CN CN201611244903.XA patent/CN106765293A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297016A (en) * | 2018-10-10 | 2019-02-01 | 贵州新能源开发投资股份有限公司 | It is a kind of to mix the circulating fluidized bed boiler front water wall pipe structure for burning coal slime |
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Application publication date: 20170531 |
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