CN104832933B - Boiler additives adding set and boiler - Google Patents
Boiler additives adding set and boiler Download PDFInfo
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- CN104832933B CN104832933B CN201510194486.1A CN201510194486A CN104832933B CN 104832933 B CN104832933 B CN 104832933B CN 201510194486 A CN201510194486 A CN 201510194486A CN 104832933 B CN104832933 B CN 104832933B
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- boiler
- mixing tube
- playpipe
- additive
- adding set
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- 239000000654 additive Substances 0.000 title claims abstract description 111
- 230000000996 additive effect Effects 0.000 claims abstract description 79
- 238000001816 cooling Methods 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 10
- 230000004323 axial length Effects 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 239000003245 coal Substances 0.000 description 11
- 230000007246 mechanism Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052728 basic metal Inorganic materials 0.000 description 2
- 150000003818 basic metals Chemical class 0.000 description 2
- 239000010883 coal ash Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
Abstract
The invention discloses a kind of boiler additives adding set and boiler, the boiler additives adding set includes feedstock vessel (3), mixing tube (6) and playpipe (7), in one end of mixing tube, feedstock vessel is connected with mixing tube to inject additive to the end of mixing tube, the end of mixing tube is also associated with compressed air jet pipe (5) to inject the compressed air mixed with additive, the other end of mixing tube is coaxially inserted in playpipe, and playpipe is rotatably set in outside mixing tube and can moved axially relative to mixing tube.The boiler additives adding set make it that the addition of additive is more targeted, improves the utilization rate of additive, reduces the use cost of additive.
Description
Technical field
The present invention relates to boiler, in particular it relates to a kind of boiler additives adding set and boiler.
Background technology
The energy resource structure in China based on coal, wherein, the proportion shared by clinker(ing) coal is larger, and this coal uses in the boiler
When the problems such as water-cooling wall slagging, convection heating surface dust stratification easily occurs, directly affect boiler safety and economic operation.
Wherein, the accurate eastern coal in clinker(ing) coal is in addition to ash fusion point is low, and alkali metal content is high in coal ash, except burner hearth be present
The serious contamination problems of convection heating surface outside easy slagging also be present, the conventional technological means for reducing furnace load etc. can not solve completely
Certainly the problem of the slagging and contamination of high basic metal coal.
In order to solve the problems, such as accurate eastern coal burning boiler slagging with staiing, improve the coal ash of high basic metal coal by using additive
Characteristic.But most boiler additives are solid-state, and by the way that additive is blended into as-fired coal, ground again through coal pulverizer
Add burner hearth.Such a addition manner make it that additive consumption is big, adds lack of targeted.
The content of the invention
It is an object of the invention to provide a kind of boiler additives adding set and boiler, the boiler additives adding set makes
It is more targeted to obtain the addition of additive, improves the utilization rate of additive, reduces the use cost of additive.
To achieve these goals, according to an aspect of the present invention, there is provided a kind of boiler additives adding set, this adds
Feeder apparatus includes feedstock vessel, mixing tube and playpipe, and in one end of the mixing tube, the feedstock vessel is connected with the mixing tube
To inject additive to the end of the mixing tube, the end of the mixing tube is also associated with compressed air jet pipe to inject
The compressed air mixed with additive, the other end of the mixing tube are coaxially inserted in the playpipe, and the playpipe can
Rotatably it is set in outside the mixing tube and can be moved axially relative to the mixing tube.
Preferably, one end of the playpipe is sheathed on the mixing tube, and the other end is formed with least one elbow spout.
Preferably, the radial clearance between the mixing tube and the playpipe is 1mm-10mm.
Preferably, the adding set also includes the walking gear driven by movable motor, the periphery of the playpipe
The worm screw engaged with the walking gear is axially formed on wall.
Preferably, the axial length of the worm screw not less than boiler heat-insulation layer outer surface and water-cooling wall inner surface it
Between distance.
Preferably, the adding set also includes passing through the motor-driven drive gear of direction controlling, the playpipe
Outer peripheral edge is provided with the external toothing engaged with the drive gear.
Preferably, the axial length of the external toothing is not less than 10mm.
Preferably, the feedstock vessel includes charge door, feed motor and by the motor-driven screw(-type) feeder of the feed, leads to
The additive that the charge door adds is crossed to be delivered in the mixing tube by the screw(-type) feeder in the feedstock vessel.
According to another aspect of the present invention, there is provided a kind of boiler, the perisporium of the burner hearth of the boiler add provided with additive
Entrance, the boiler also include described boiler additives adding set, wherein, the playpipe adds through the additive
Mouth is extended in the burner hearth.
Preferably, the perisporium of the burner hearth of the boiler is provided with multiple additives and adds mouth, and the mixing tube is formed
Having and mix branch pipe correspondingly with multiple additives addition mouths, the mixing branch pipe is arranged with the playpipe respectively,
Each playpipe adds mouth through the corresponding additive and extended in the burner hearth.
Pass through above-mentioned technical proposal, the present invention in the end of additive feedstock vessel and mixing tube connect, the end of mixing tube
Compressed air spout is also associated with, the other end of mixing tube is arranged with playpipe, and playpipe can be relative to mixing tube axial direction
It is mobile.Specifically, additive enters in mixing tube in feedstock vessel, is mixed together with the compressed air sprayed from compressed air jet pipe
Close, and enter and be rotatably set in the playpipe outside mixing tube, and by way of manually or mechanically so that playpipe energy
It is enough to be moved axially relative to mixing tube so that additive can uniformly and with targetedly being sprayed so that
The addition of additive is more targeted, improves the utilization rate of additive, reduces the use cost of additive.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is for providing a further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structural representation according to the boiler additives adding set of the present invention and the preferred embodiment of boiler；
Fig. 2 is the schematic diagram that additive adds mouth in a kind of embodiment according to the boiler of the present invention；
Fig. 3 is the schematic diagram that additive adds mouth in the another embodiment according to the boiler of the present invention.
Description of reference numerals
1 charge door 2 is fed motor
The screw(-type) feeder of 3 feedstock vessel 4
The mixing tube of 5 compressed air jet pipe 6
The direction controlling motor of 7 playpipe 8
The external toothing of 9 drive gear 10
The walking gear of 11 worm screw 12
The additive of 13 movable motor 14 adds mouth
The elbow spout of perisporium 16 of 15 burner hearths
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
In the present invention, in the case where not making opposite explanation, the noun of locality such as " upper and lower, top, bottom " used is typically pin
For direction shown in the drawings either for each part mutual alignment relation on vertical, vertical or gravity direction
Word is described.
As shown in figure 1, a kind of boiler additives adding set, the adding set includes feedstock vessel 3, mixing tube 6 and injection
Pipe 7, in one end of mixing tube 6, feedstock vessel 3 is connected with mixing tube 6 to inject additive to the end of mixing tube 6, mixing tube 6
End is also associated with compressed air jet pipe 5 to inject the compressed air mixed with additive, and the other end of mixing tube 6 is coaxially inserted
Enter in playpipe 7, playpipe 7 is rotatably set in outside mixing tube 6 and can moved axially relative to mixing tube 6.
The present invention is connected by feedstock vessel 3 with mixing tube 6 so that additive can be by being delivered to mixing tube 6 in feedstock vessel 3
In, and the end due to mixing tube 6 is connected with compressed air jet pipe 5 so that and compressed air jet pipe 5 injects into mixing tube 6
Compressed air, the compressed air of injection mix with the additive in mixing tube 6, and the other end of mixing tube 6 coaxially inserts injection
In pipe 7, playpipe 7 is rotatably set in outside mixing tube 6 so that mixed additive flows through playpipe 7, in compressed air
Drive under cause playpipe 7 in additive spray into the burner hearth of boiler.Because the other end of mixing tube 6 coaxially inserts
In playpipe 7, playpipe 7 is rotatably set in outside mixing tube 6 so that playpipe 7 can axially move relative to mixing tube 6
It is dynamic.Specific playpipe 7 can be realized with respect to the motion of mixing tube 6 by way of manually or mechanically.Playpipe 7 is relatively mixed
Close the motion of pipe 6 so that playpipe 7 can be according to being actually needed come adjustment position, so that additive can uniformly and tool
Targetedly sprayed, improve the utilization rate of additive, reduce the use cost of additive.
Especially, one end of playpipe 7 is sheathed on mixing tube 6, and the other end is formed with least one elbow spout 16.Will be mixed
Close in pipe 6 and be delivered to the mixed additive of compressed air in playpipe 7, then the elbow spout of the other end by playpipe 7
16 are sprayed into burner hearth, while playpipe 7 is moved axially and/or rotated by way of manually or mechanically, will be by elbow
The additive that spout 16 sprays is sprayed onto on position predetermined in burner hearth.Especially, the present invention can spray according to needed for burner hearth and add
Add the emitted dose of agent and the size of area, multiple elbow spouts 16 are provided with the end of playpipe 7, can be directed to regular in burner hearth
The direction of slagging sets elbow spout 16, with the targetedly additive spray into burner hearth.
Especially, need to leave certain gap between mixing tube 6 and playpipe 7 so that playpipe 7 can drive elbow
Spout 16 is moved axially and rotated, due to the ejector action of the outlet high velocity air of mixing tube 6, playpipe 7 and mixing tube 6
Between gap at be negative pressure, therefore additive will not leak to the space outside stove.According to the model of boiler and required processing
The area of slagging it is of different sizes, the radial clearance between mixing tube 6 and playpipe 7 is also different.Normally, mixing tube 6 and spray
The radial clearance penetrated between pipe 7 is 1mm-10mm.
Especially, adding set also includes the walking gear 12 driven by movable motor 13, on the periphery wall of playpipe 7
It is axially formed the worm screw 11 engaged with walking gear 12.Specifically, movable motor 13 drives walking gear 12 to rotate, by row
The rotary motion for walking gear 12 is converted into the axial of worm screw 11 and moved horizontally, so as to drive playpipe 7 and the one end of playpipe 7
Elbow spout 16 move axially.By controlling direction of rotation, rotating cycle and the rotating speed of movable motor 13, so as to
Enough control moving direction, distance and the speed of playpipe 7 and elbow spout 16.In another embodiment, worm screw 11 also may be used
Change into be formed on the periphery wall of playpipe 7 with 12 intermeshing composition surface of walking gear.
Worm screw 11 needs enough axial lengths, to be adapted to the axial movement of playpipe 7, thus especially, worm screw 11
Axial length not less than the outer surface of the heat-insulation layer of boiler and the distance between the inner surface of water-cooling wall, the i.e. axial direction of worm screw 11
Length determines according to the difference of boiler model, and is sprayed according to additive to the needs of the position of boiler, and playpipe 7 is sometimes
Need to move axially and rotate simultaneously, therefore worm screw 11 should be formed in the circumference of playpipe 7, to adapt to playpipe simultaneously
7 rotation.
Especially, in one embodiment, additive-adding device also includes the drive driven by direction controlling motor 8
Moving gear 9, the outer peripheral edge of playpipe 7 are provided with the external toothing 10 engaged with drive gear 9.Specifically, the band of direction controlling motor 8
Dynamic drive gear 9 rotates, and also corresponding rotation, external toothing 10 are fixed on playpipe 7 with the external toothing 10 of the engagement of drive gear 9
On, therefore the rotation of external toothing 10 can drive playpipe 7 and the elbow spout 16 of the one end of playpipe 7 to rotate.According to boiler knot
The turnning circle of slag position control direction controlled motor 8, so as to control the direction of elbow spout 16, additive is sprayed
To precalculated position.
In another embodiment, additive-adding device can include the active driven by direction controlling motor 8
Sprocket wheel, driven sprocket and chain, driven sprocket are arranged on the outer wall periphery of playpipe 7, chain be set in drive sprocket with from
On movable sprocket, and engaged with drive sprocket and driven sprocket.Specifically, the drive sprocket that direction controlling motor 8 drives, so as to band
Dynamic chain engages with the drive sprocket rotated, and then drives driven sprocket to rotate, because driven sprocket is arranged on the outer of playpipe 7
On wall periphery, therefore the rotation of driven sprocket can drive playpipe 7 and the elbow spout 16 of the one end of playpipe 7 to rotate.But this
Invention is not limited to above two embodiment, the common rotating mechanism that can be realized playpipe 7 and rotate.
Sprayed according to additive to the needs of the position of boiler, playpipe 7 is sometimes for moving axially and turn simultaneously
It is dynamic, therefore external toothing 10 needs enough axial lengths, to adapt to the axial movement of playpipe 7 simultaneously, thus especially, outside
The axial length of gear ring 10 is not less than 10mm.
Especially, feedstock vessel 3 includes charge door 1, feed motor 2 and the screw(-type) feeder 4 driven by feed motor 2, leads to
The additive for crossing the addition of charge door 1 is delivered in mixing tube 6 in feedstock vessel 3 by screw(-type) feeder 4.Wherein, charge door 1 is
Switchable, additive is fitted into feedstock vessel 3 by charge door 1, closes charge door 1 after charging, prevents from being fed during operation
Malleation material leakage in tank 3, motor 2 is fed with hand starting, drives screw(-type) feeder 4 to work, additive is delivered to mixing tube 6
In.
A kind of boiler, the perisporium 15 of the burner hearth of the boiler are provided with additive and add mouth 14, and boiler, which also includes boiler, to be added
Agent adding set, wherein, playpipe 7 adds mouth 14 through additive and extended in burner hearth.Selected according to the position of the easy slagging of boiler
Select and open up the position that additive adds mouth 14, description additive addition two of mouth 14 that below will in detail opens up position.This
Additive is opened up on the perisporium 15 that invention passes through the burner hearth in boiler and adds mouth 14 so that playpipe 7 adds mouth through additive
14 are extended in burner hearth, and additive is sprayed into the precalculated position to burner hearth, to realize that additive targetedly adds.
Especially, as shown in Figures 2 and 3, the perisporium 15 of the burner hearth of boiler is provided with multiple additives and adds mouth 14, mixing
For pipe 6 formed with branch pipe is mixed correspondingly with multiple additives addition mouth 14, the mixing branch pipe is arranged with playpipe respectively
7, each playpipe 7 passes through corresponding additive to add mouth 14 and extended in the burner hearth.According to the easy slagging of boiler with staiing position
Put, opening up additive in the correct position of the perisporium 15 of the burner hearth of boiler adds mouth 14.
Embodiments of the present invention will be further described by taking Fig. 2 and Fig. 3 as an example below, but embodiments of the present invention are not
It is limited to following two.
Such as Fig. 2 it is shown that the serious boiler of water-cooling wall slagging, such boiler need additive being sprayed onto on water-cooling wall easily
The region of slagging.Therefore, in one embodiment, multiple additives are opened up in the easy slagging region of water-cooling wall and add mouth 14,
Preferably, additive adds the upright position that mouth 14 is arranged on water-cooling wall, especially, to be advisable below slagging region, but
It is not limited to lower section.It is that the radius sprayed with additive-adding device can be in water that additive, which adds the horizontal level of mouth 14 and spacing,
Square it is advisable to comprehensive covering slagging region.It is as shown in Figure 2 that additive adds the schematic diagram of mouth 14.
When needing to spray into additive, intend spraying into the adding set work (as shown in Figure 1) of position, elbow spout 16 is expert at
Walk mechanism (walking mechanism includes worm screw 11, walking gear 12 and movable motor 13, and above-mentioned to be described in detail, here is omitted)
Drive under added dose add mouth 14 and stretch into burner hearth, while the compressed air fed by compressed air jet pipe 5 is curved to cool down
Head spout 16 and playpipe 7.In direction control mechanism, (direction control mechanism includes direction controlling motor 8, drive gear 9 and outer
Gear ring 10) control under, elbow spout 16 point to precalculated position.By feeder, (feeder includes feed motor 2, spiral shell
Revolve batcher 4) work, additive sprays into burner hearth presumptive area under the drive of compressed air.
The additive adhesion of penetrating is in water cooling wall surface or slag blanket surface, improvement Slagging.Part is nonadherent predetermined
The additive in region is mainly enriched with adherent air-flow, though air-flow rotates about rising along water-cooling wall, being partly adhered to additive
Add on the water-cooling wall of the top of mouth 14, also function to and alleviate slagging effect.It is mixed in advance relative to additive in as-fired coal or full burner hearth
Injection, utilization rate greatly improve.
Such as Fig. 3 it is shown that afterbody convection heating surface stains serious boiler, such boiler needs additive being sprayed onto pair
Flow easy contaminated area on heating surface.Therefore, in another embodiment, opened on horizontal flue or tail vertical well both sides bag wall
If multiple additives add mouth 14, it is preferable that additive adds mouth 14 between tube panel or pipe group, is easy to the end of playpipe 7
Elbow spout 16 stretch into, as shown in Figure 3.
When needing to spray into additive, intend spraying into the adding set work (as shown in Figure 1) of position, elbow spout 16 is expert at
Walk added dose of addition mouth 14 under the drive of mechanism to stretch into burner hearth, while pass through the compressed air that compressed air jet pipe 5 is fed
To cool down elbow spout 16 and playpipe 7.Under the control of direction control mechanism, elbow spout 16 points to precalculated position.Pass through
The work of feeder, additive start to spray into burner hearth under the drive of compressed air.Under the drive of walking mechanism, elbow
Spout 16 can reach the different depth in burner hearth, and direction control mechanism controls the sensing of elbow spout 16, to add
Agent is ejected on predetermined tube panel.
, it is necessary to which multiple additives are opened up on boiler adds mouth 14, in order to height in two embodiments described above
Effect, the quick and convenient slagging and contamination removed on boiler, therefore especially, mixing tube 6 with multiple additives formed with adding
Entrance 14 mixes branch pipe correspondingly, and the mixing branch pipe is arranged with playpipe 7 respectively, and each playpipe 7 is corresponding to
Additive adds mouth 14 and extended in the burner hearth.So that the addition of additive is more targeted, the utilization of additive is improved
Rate, reduce the use cost of additive.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (9)
1. a kind of boiler additives adding set, it is characterised in that the boiler additives adding set includes feedstock vessel (3), mixed
Close pipe (6) and playpipe (7), in one end of the mixing tube (6), the feedstock vessel (3) be connected with the mixing tube (6) with to
The end injection additive of the mixing tube (6), the end of the mixing tube (6) is also associated with compressed air jet pipe (5)
To inject the compressed air mixed with additive, the other end of the mixing tube (6) is coaxially inserted in the playpipe (7),
The playpipe (7) is rotatably set in the mixing tube (6) outside and can moved axially relative to the mixing tube (6),
One end of the playpipe (7) is sheathed on the mixing tube (6), and the other end is formed with least one elbow spout (16).
2. boiler additives adding set according to claim 1, it is characterised in that the mixing tube (6) and the spray
The radial clearance penetrated between pipe (7) is 1mm-10mm.
3. boiler additives adding set according to claim 1, it is characterised in that the boiler additives adding set
Also include the walking gear (12) driven by movable motor (13), be axially formed on the periphery wall of the playpipe (7)
The worm screw (11) engaged with the walking gear (12).
4. boiler additives adding set according to claim 3, it is characterised in that the axial length of the worm screw (11)
Not less than the outer surface of the heat-insulation layer of boiler and the distance between the inner surface of water-cooling wall.
5. boiler additives adding set as claimed in any of claims 1 to 4, it is characterised in that the boiler
Additive-adding device also includes the drive gear (9) driven by direction controlling motor (8), the periphery of the playpipe (7)
Edge is provided with the external toothing (10) engaged with the drive gear (9).
6. boiler additives adding set according to claim 5, it is characterised in that the axial direction of the external toothing (10) is long
Degree is not less than 10mm.
7. boiler additives adding set according to claim 1, it is characterised in that the feedstock vessel (3) includes charging
Mouth (1), feed motor (2) and the screw(-type) feeder (4) driven by the feed motor (2), pass through what the charge door (1) added
Additive is delivered in the mixing tube (6) in the feedstock vessel (3) by the screw(-type) feeder (4).
8. a kind of boiler, it is characterised in that the perisporium (15) of the burner hearth of the boiler is provided with additive and adds mouth (14), the pot
Stove also includes the boiler additives adding set in claim 1 to 7 described in any one, wherein, the playpipe (7) passes through
The additive adds mouth (14) and extended in the burner hearth.
9. boiler according to claim 8, it is characterised in that the perisporium (15) of the burner hearth of the boiler is provided with multiple institutes
State additive and add mouth (14), the mixing tube (6) is mixed correspondingly formed with mouth (14) is added with multiple additives
Branch pipe is closed, the mixing branch pipe is arranged with the playpipe (7) respectively, and each playpipe (7) is described corresponding to be added
Add agent to add mouth (14) to extend in the burner hearth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194486.1A CN104832933B (en) | 2015-04-22 | 2015-04-22 | Boiler additives adding set and boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510194486.1A CN104832933B (en) | 2015-04-22 | 2015-04-22 | Boiler additives adding set and boiler |
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| Publication Number | Publication Date |
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| CN104832933A CN104832933A (en) | 2015-08-12 |
| CN104832933B true CN104832933B (en) | 2018-01-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107023845B (en) * | 2017-03-01 | 2019-10-15 | 中国神华能源股份有限公司 | Boiler plant |
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| CN203454174U (en) * | 2013-08-16 | 2014-02-26 | 林建斌 | Ultrahigh pressure coal power additive device |
| CN204110925U (en) * | 2014-04-30 | 2015-01-21 | 巩义市义利机械有限公司 | A kind of pneumatic transporting feeding envelope pump |
| CN204593417U (en) * | 2015-04-22 | 2015-08-26 | 中国神华能源股份有限公司 | Boiler additives adding set and boiler |
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