CN108036310A - Horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner - Google Patents
Horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner Download PDFInfo
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- CN108036310A CN108036310A CN201810009612.5A CN201810009612A CN108036310A CN 108036310 A CN108036310 A CN 108036310A CN 201810009612 A CN201810009612 A CN 201810009612A CN 108036310 A CN108036310 A CN 108036310A
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- 239000003245 coal Substances 0.000 title claims abstract description 51
- 238000000926 separation method Methods 0.000 title claims abstract description 41
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 21
- -1 nitrogen nitride Chemical class 0.000 title claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 claims abstract description 20
- 238000005192 partition Methods 0.000 claims abstract description 17
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 description 15
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 15
- 239000002817 coal dust Substances 0.000 description 13
- 239000000843 powder Substances 0.000 description 9
- 238000004939 coking Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
Horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner of the present invention is related to mechanical device technical field.Its body front end and spout, rear end is fixed with pulverized coal channel, special-shaped horizontal separation block in body with 35 pieces of 20 30 degree of angles of inclination angle in a manner of ladder misplaces is fixed, wear-resisting baffle on the inside of body first half with 8 15 degree of angles of reversed dip angle is fixed, centre is fixed with half arc-shaped partition of the wide end in preceding placement in body outlet, there is steady combustion tooth at both sides and cross central line position up and down in spout, surely fire 30 millimeters of the facewidth of tooth in upper and lower both sides, tooth is 20 millimeters high, 140 millimeters of space width, surely fire 80 millimeters of the facewidth of tooth in cross central line position, tooth is 20 millimeters high, 160 millimeters of space width, bias-signal-modulated noise mouth is formed between two conically shapeds of spout, the ︰ 23 of side width of jet on the downside of three side width of jet ︰=1.For boiler combustion.Structure is skilful, effect is good, sharp popularization.
Description
Technical field
Horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner of the present invention, is related to mechanical device technical field；
More particularly to wide to coal accommodation, lower resistance, low speed are poor, low nitrogen nitride, the coal burner machinery for meeting environmental requirement
Engineering device technique field.
Background technology
According to national environmental protection portion on issue《Thermal power plant's pollution prevention technique policy》Bulletin（Bulletin 2017 years the
No. 1）The prevention and control of air pollution of content provided coal-burning power plant should be to implement qualified discharge as basic demand, to implement in full minimum discharge
For target.It is required that thermal power plant's nitrogen oxides administers the technology road that low-NO_x combustion technology should be used to be used cooperatively with gas denitrifying technology
Line.
At present, in existing corner arrangement single flow coal burner technology, " the level of Application No. 2006201190269
Dense-dilute concentration type direct flow pulverized coal burner ", " coal powder direct supplying burner of patent No. ZL98216954.Its structural principle all uses
Horizontal bias separates, i.e., the coal burner outlet dense side of breeze airflow is in counter-fire face, light side is in the fiery face of the back of the body.But such burning
Device separate mode uses elbow to separate or venetian blind type separate mode substantially, undesirable there are separating effect and be also easy to produce coking and show
As the shortcomings that.This existing known technology and present situation there is design inadequate science, structure shortcoming rationally, the adaptation to coal
Scope is relatively narrow, coal type change when be difficult to control deficiency, defect and drawback to nitrogen oxides.Specialty based on inventor is known
Knowledge and working experience and the unremitting pursuit to cause, are conscientiously investigating, analyze, summarize, are studying existing known technology and present situation base
On plinth, spy takes " special-shaped horizontal separation and bias-signal-modulated noise " key technology, has succeeded in developing " horizontal bias abnormity separation low-resistance
Power low nitrogen nitride coal burner " new equipment.The present apparatus is suitable for various coals, is suitable for the nitrogen generated in boiler combustion process
Oxide reduces and coordinates low nitrogen nitride combustion retrofit and denitration to fully meet stringent minimum discharge standard, has and adapts to bag
Include the sufficiently high steady combustion property of more coals including coal inferior, burning, the generation of anti-coking characteristic, low nitrogen nitride meet it is environmentally friendly stringent
The significant outstanding feature of emission request, comprehensive benefit, effectively solves existing known technology and deficiency, defect existing for present situation
With drawback.Effectively raise the technical merit of the industry.
The content of the invention
The present invention takes " special-shaped horizontal separation and bias-signal-modulated noise " key technology, its body front end and spout, rear end with
Pulverized coal channel is fixed, and the special-shaped horizontal separation block in body with 3-5 blocks angle of inclination 20-30 degree angle in a manner of ladder misplaces is consolidated
Fixed, the wear-resisting baffle on the inside of body first half with reversed dip angle 8-15 degree angle is fixed, in body outlet centre and
Wide end is fixed in half arc-shaped partition of preceding placement, and there are steady combustion tooth, upper and lower both sides in both sides and cross central line position up and down in spout
30 millimeters of the facewidth of steady combustion tooth, tooth are 20 millimeters high, 140 millimeters of space width, cross central line position surely fire tooth 80 millimeters of the facewidth,
Tooth is 20 millimeters high, 160 millimeters of space width, and bias-signal-modulated noise mouth, three side width of jet ︰ downsides are formed between two conically shapeds of spout
The ︰ 2-3 of side width of jet=1.For boiler combustion.
It is by the purpose of the invention reached：1., the present invention take " special-shaped horizontal separation and bias-signal-modulated noise " crucial skill
Art, there is provided the new equipment of " horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner ".2., the present invention structure section
Learn rationally and simple ingenious, easy to use and effect stability be reliable, easy to make with use and cost of manufacture and operation cost it is equal
It is low.3., the present invention using special-shaped horizontal separation block and wear-resisting baffle, the ingenious structure of half arc-shaped partition, reduce separation block
The vortex that afterbody is formed, has achieveed the purpose that to reduce burner resistance.4., the present invention by 3-5 block abnormity horizontal bias separate block
In a manner of ladder dislocation and tilt the angle of 20-30 degree and be fixedly connected, due to abnormity horizontal bias separation block and breeze airflow
Constitute the angle of 20-30 degree, the drag minimization of the angle, can effectively separate coal dust is corresponding to air progress, i.e., in face of
Breeze airflow coal powder density is high and little air, backwards to breeze airflow while coal powder density it is low and air is more, it is such
Special-shaped horizontal bias separation block carries out separating for several times in a manner of ladder misplaces relay to breeze airflow, so as to be truly realized pair
The air-coal separating of breeze airflow, after air-coal separating, can make burning more stable more fully, while reached the nitrogen oxidation of generation
The low purpose of thing.5., the bias-signal-modulated noise mouth of the present invention be designed as inequilateral mouth structure, the light powder side width of bottom side is big, remaining
The width in three faces is small, and effective to ensure that water cooling wall region is oxygen-enriched, reached prevents panelized-tube-wall section under low NOx combustion systems
Wall coking and the purpose of high temperature corrosion.6., the present invention succeed in developing, solve existing for existing known technology and present situation not
Foot, defect and drawback, have effectively improved the technical merit of the industry, can wide popularization and application.
To achieve the above object, technical solution provided by the invention is：
A kind of horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner, by body, special-shaped horizontal separation block, wear-resisting leads
Fluid, half arc-shaped partition, spout, the steady combustion tooth on spout, the bias-signal-modulated noise mouth on spout, pulverized coal channel are formed；
Horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner, the front end of its body with after spout, body
End is fixedly connected with pulverized coal channel, its interior body is the different of 20-30 degree angle with 3-5 blocks angle of inclination in a manner of ladder misplaces
Shape horizontal separation block is fixedly connected, and the inner side of its body first half is consolidated with reversed dip angle for the wear-resisting baffle at 8-15 degree angle
Fixed to connect, the centre in the outlet of its body is fixedly connected with half arc-shaped partition of the wide end in preceding placement, upper in its spout
Lower both sides and cross central line position are both provided with steady combustion tooth, in its described spout up and down both sides surely fire tooth 30 millimeters of the facewidth,
Tooth is 20 millimeters high, 140 millimeters of space width, and it is high by 20 surely to fire 80 millimeters of the facewidth of tooth, tooth for cross central line position in its described spout
Millimeter, 160 millimeters of space width, collectively form bias-signal-modulated noise mouth between two conically shapeds of its biconial cylinder spout, its is described partially
The width of putting three side spouts of circumference air port both sides and upside is equal, on the downside of three side spout wide degree ︰ side spout width
Spend=1 ︰ 2-3.
The horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner, the body is square tube type structure,
The abnormity horizontal separation block is the special-shaped platy structure of the airfoil of aircraft, and the wear-resisting baffle is the length of rectangular in cross-section
Square structure, half arc-shaped partition are in the narrow long block structure in the wide rear end of half arc and front end, the spout for section
Biconial tubular structure, the steady combustion tooth on the spout are laciniation, and the bias-signal-modulated noise mouth on the spout is both sides
And upside three side spouts are narrow and unequal section shape that the side spout of downside is wide, the pulverized coal channel is tubular structure.
The present invention operation principle and the course of work be：As shown in Figure of description 1,2, in the use of the present invention, coal dust
After pulverized coal channel enters body, 20-30 degree angle is in the 3-5 blocks angle of inclination set in body in a manner of ladder dislocation
The effect of special-shaped horizontal separation block under, carry out air-coal separating step by step so that the coal dust of dense content advances to wear-resisting water conservancy diversion body position
When, under the effect of wear-resisting baffle, coal powder density is further concentrated, and half arc is advanced to by concentration and concentration and high coal dust
During partition position, under the action of half arc-shaped partition, flowed to the lower half of spout；At the same time, the coal dust of light content is to spray
The first half flowing of mouth；Thereby realize the air-coal separating of coal dust.And then, the dense coal dust of content passes through spout lower half
When, what is just run into is the latter half of spout bias-signal-modulated noise mouth, is exactly the bottom side portion of bias-signal-modulated noise mouth, and biasing is all
The width of boundary air port bottom side is big ----so air quantity foot, oxygen content are high, be conducive to the abundant nitrogen oxides for burning, producing of coal dust
Just it is low, reached coal dust firing fully, efficiently use with saving the coal dust energy, nitrogen oxides is low, realizes harmful substance maximum limit
The low emission of degree, greatly environmental protection the purpose of.
Design is scientific and reasonable by the present invention, simple and ingenious structure, is easy to low manufacture cost, and using effect is reliable and stable, has
The technical merit for having brought up to the industry of effect.
As a result of technical solution provided by the present invention；Since this invention takes " special-shaped horizontal separation and biasing
Surrounding air " key technology；Due to described in the operation principle and the course of work of the present invention；Due to its body front end of the invention and spray
Mouth, rear end and pulverized coal channel are fixed, the special-shaped water in body in a manner of ladder misplaces with 3-5 blocks angle of inclination 20-30 degree angle
Divide equally and fixed from block, the wear-resisting baffle on the inside of body first half with reversed dip angle 8-15 degree angle is fixed, in body outlet
Centre is fixed with half arc-shaped partition of the wide end in preceding placement, and there is steady combustion at both sides and cross central line position up and down in spout
Tooth, upper and lower both sides surely fire that 30 millimeters of the facewidth of tooth, tooth be 20 millimeters high, 140 millimeters of space width, and tooth is surely fired at cross central line position
80 millimeters of the facewidth, tooth are 20 millimeters high, 160 millimeters of space width, and bias-signal-modulated noise mouth, three side sprays are formed between two conically shapeds of spout
The ︰ 2-3 of side width of jet on the downside of mouth width Du ︰=1.For boiler combustion.So that the present invention and existing known technology and present situation phase
Than the beneficial effect of acquisition is：
1st, the present invention takes " special-shaped horizontal separation and bias-signal-modulated noise " key technology, so as to provide " horizontal bias abnormity point
From lower resistance low nitrogen nitride coal burner " new equipment.
2nd, scientific and reasonable for structure and simple ingenious, easy to use and effect stability of the invention is reliable, easy to make with making
With and cost of manufacture and operation cost it is low.
3rd, the present invention is using special-shaped horizontal separation block and wear-resisting baffle, the ingenious structure of half arc-shaped partition, reduces point
The vortex formed from block afterbody, has achieveed the purpose that to reduce burner resistance.
4th, the angle of the invention for separating block in a manner of ladder dislocation by 3-5 block abnormity horizontal bias and tilting 20-30 degree is consolidated
Fixed connection, since the abnormity horizontal bias separates block and breeze airflow constitutes the angle of 20-30 degree, the resistance pole of the angle
It is small, can effectively it separate coal dust is corresponding to air progress, i.e., the coal powder density in face of breeze airflow one side is high and little air, the back of the body
Low to the coal powder density of breeze airflow one side and air is more, such abnormity horizontal bias separation block is with the side of ladder dislocation relay
Formula carries out separating for several times to breeze airflow, so that the air-coal separating to breeze airflow is truly realized, can after air-coal separating
Make burning more stable more fully, while achieveed the purpose that the nitrogen oxides of generation is low.
5th, the present invention be provided with reversed dip angle be 8-15 degree angle wear-resisting baffle and meanwhile be additionally provided with half arc every
Plate, so that the abundant burning of coal dust is more concentrated, be more conducive to the coal dust after air-coal separating.And wear-resisting baffle is by wear-resisting
Ceramic block and steel plate composition, have the beneficial effect of high wear resistance.
6th, bias-signal-modulated noise mouth of the invention is designed as inequilateral mouth structure, and the light powder side width of bottom side is big, its excess-three face
Width it is small, i.e., light powder side is big, its excess-three face is small, effective to ensure that water cooling wall region is oxygen-enriched, has reached in low NOx burning sides
The purpose of the coking of panelized-tube-wall section wall and high temperature corrosion is prevented under formula.
7th, it is of the invention to succeed in developing, existing known technology and deficiency, defect and drawback existing for present situation are solved, is effectively carried
Height has arrived the technical merit of the industry, can wide popularization and application.
Brief description of the drawings
Fig. 1 is the schematic diagram of the specific embodiment of the invention.
Fig. 2 is the left view schematic diagram of spout in the specific embodiment of the invention.
Label in figure：1st, body, 2, special-shaped horizontal separation block, 3, wear-resisting baffle, 4, half arc-shaped partition, 5, spout,
501st, tooth is surely fired, 502, bias-signal-modulated noise mouth, 6, pulverized coal channel.
Embodiment
With reference to Figure of description, the present invention is described in detail.As shown in Figure of description 1,2：
A kind of horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner, by body 1, special-shaped horizontal separation block 2, wear-resisting
Baffle 3, half arc-shaped partition 4, spout 5, the steady combustion tooth 501 on spout 5, the bias-signal-modulated noise mouth 502 on spout 5, coal pipe
Road 6 is formed；
Horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner, the front end of its body 1 and spout 5, body 1
Rear end is fixedly connected with pulverized coal channel 6, in its body 1 in a manner of ladder misplaces with 3-5 blocks angle of inclination for 20-30 degree angle
Special-shaped horizontal separation block 2 be fixedly connected, the inner side of its 1 first half of body and wear-resisting the leading that reversed dip angle is 8-15 degree angle
Fluid 3 is fixedly connected, and the centre in the outlet of its body 1 is fixedly connected with half arc-shaped partition 4 of the wide end in preceding placement, it is sprayed
Both sides up and down and cross central line position in mouth 5, which are both provided with, surely fires tooth 501, and tooth is surely fired in both sides up and down in its described spout 5
501 30 millimeters of the facewidth, tooth are 20 millimeters high, 140 millimeters of space width, and tooth 501 is surely fired at cross central line position in its described spout 5
80 millimeters of the facewidth, tooth is 20 millimeters high, 160 millimeters of space width, collectively formed between two conically shapeds of its biconial cylinder spout 5 partially
Circumference air port 502 is put, the width of three side spouts of its 502 both sides of bias-signal-modulated noise mouth and upside is equal, three side spray
Mouthful Kuan Du ︰ on the downside of side spout the ︰ 2-3 of width=1.
The horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner, the body 1 is square tube type structure,
The abnormity horizontal separation block 2 is the special-shaped platy structure of the airfoil of aircraft, and the wear-resisting baffle 3 is rectangular in cross-section
Rectangular block structure, half arc-shaped partition 4 are section in the narrow long block structure in the wide rear end of half arc and front end, the spout
5 be biconial tubular structure, and the steady combustion tooth 501 on the spout 5 is laciniation, the bias-signal-modulated noise on the spout 5
Mouth 502 is the unequal section shape that three side spouts of both sides and upside are narrow and the side spout of downside is wide, and the pulverized coal channel 6 is
Tubular structure.
In above-mentioned specific implementation process：The special-shaped horizontal separation block 2 is carried out with 3,4,5 pieces respectively；
The angle of inclination of the special-shaped horizontal separation block 2 is carried out with 20,22,25,28,30 degree of angles respectively；To described wear-resisting
The reversed dip angle of baffle 3 is carried out with 8,10,12,14,15 degree of angles respectively；To the bias-signal-modulated noise mouth 502
The width of side spout is carried out with 1 ︰ 2,1 ︰ 2.5,1 ︰ 3 respectively on the downside of the wide degree ︰ of three side spouts；Obtain expected
Good result.
The foregoing is merely presently preferred embodiments of the present invention, not makees limitation in any form to the present invention；All one's own professions
The those of ordinary skill of industry, can be shown in by specification attached drawing and described above and swimmingly implement the present invention；But do not departing from
Technical solution of the present invention and the equivalent variations for making differentiation, are the equivalent embodiment of the present invention, still fall within protection of the present invention
Technical solution.
Claims (2)
- A kind of 1. horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner, it is characterised in that：By body（1）, abnormity Horizontal separation block（2）, wear-resisting baffle（3）, half arc-shaped partition（4）, spout（5）, spout（5）On steady combustion tooth（501）, spout （5）On bias-signal-modulated noise mouth（502）, pulverized coal channel（6）Form；The horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner, its body（1）Front end and spout（5）, this Body（1）Rear end and pulverized coal channel（6）It is fixedly connected with, its body（1）It is interior by ladder misplace in a manner of with 3-5 blocks angle of inclination For the special-shaped horizontal separation block at 20-30 degree angle（2）It is fixedly connected, its body（1）The inner side of first half is with reversed dip angle The wear-resisting baffle at 8-15 degree angle（3）It is fixedly connected, its body（1）Half arc of centre in outlet and wide end in preceding placement Shape partition plate（4）It is fixedly connected, its spout（5）Interior both sides up and down and cross central line position are both provided with steady combustion tooth（501）, its The spout（5）Surely fire tooth in interior both sides up and down（501）30 millimeters of the facewidth, tooth is 20 millimeters high, 140 millimeters of space width, described in it Spout（5）Surely fire tooth in interior cross central line position（501）80 millimeters of the facewidth, tooth is 20 millimeters high, 160 millimeters of space width, its pair Conically shaped spout（5）Two conically shapeds between collectively form bias-signal-modulated noise mouth（502）, its described bias-signal-modulated noise mouth（502） The width of three side spouts of both sides and upside is equal, on the downside of three side spout wide degree ︰ side spout the ︰ 2-3 of width=1.
- 2. horizontal bias abnormity separation lower resistance low nitrogen nitride coal burner according to claim 1, it is characterised in that： The body（1）For square tube type structure, the abnormity horizontal separation block（2）For the special-shaped platy structure of the airfoil of aircraft, institute State wear-resisting baffle（3）For the rectangular block structure of rectangular in cross-section, half arc-shaped partition（4）It is section in half arc and preceding The narrow long block structure in the wide rear end in end, the spout（5）For biconial tubular structure, the spout（5）On steady combustion tooth（501） For laciniation, the spout（5）On bias-signal-modulated noise mouth（502）The three side spouts for both sides and upside are narrow and downside The wide unequal section shape of side spout, the pulverized coal channel（6）For tubular structure.
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| CN109489062A (en) * | 2018-11-05 | 2019-03-19 | 江苏京成机械制造有限公司 | Tangentially-fired boiler and the method for mitigating burner hearth coking and exporting smoke temperature difference |
| CN114413256A (en) * | 2022-01-27 | 2022-04-29 | 哈尔滨锅炉厂有限责任公司 | An oxygen-enriched once-through burner with adjustable combustion performance |
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