CN203810401U - Multi-channel pulverized coal burner - Google Patents
Multi-channel pulverized coal burner Download PDFInfo
- Publication number
- CN203810401U CN203810401U CN201420199391.XU CN201420199391U CN203810401U CN 203810401 U CN203810401 U CN 203810401U CN 201420199391 U CN201420199391 U CN 201420199391U CN 203810401 U CN203810401 U CN 203810401U
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- China
- Prior art keywords
- airduct
- coal
- air
- ring
- eddy flow
- Prior art date
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- Expired - Lifetime
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- 239000003245 coal Substances 0.000 title claims abstract description 64
- 239000000843 powder Substances 0.000 claims description 19
- 210000004894 snout Anatomy 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 14
- 230000008901 benefit Effects 0.000 abstract description 10
- 239000003921 oil Substances 0.000 description 21
- 239000004568 cement Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002817 coal dust Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 238000001354 calcination Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 239000002802 bituminous coal Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Abstract
The utility model discloses a multi-channel pulverized coal burner which comprises an ignition device, an air distribution disc, an air distribution disc fixing pipe, a central air pipe, a cyclone air pipe, a coal air pipe and an axial flow air pipe. Under the ignition state, the coal air pipe and the front end face of the axial flow air pipe are flush, the front end of the cyclone air pipe and the front end of the central air pipe are inwards contracted by a first distance relative to the front end of the axial flow air pipe, the front end of the ignition device and the front end of the air distribution disc fixing pipe are inwards contracted by a second distance relative to the front end of the axial flow air pipe, and the second distance is larger than the first distance. According to the multi-channel pulverized coal burner, direct flow axial air and cyclone air of external air can be flexibly adjusted, operation is simple and convenient, and the multi-channel pulverized coal burner is economical and practical, is suitable for a wide coal type range, can ignite both high-quality soft coal, fault coal and blind coal, and has wide economical and social benefits.
Description
Technical field
The utility model relates to coal burner technical field, relates in particular to a kind of multi-channel coal powder combustor.
Background technology
At present, at all extensive use multicenter combustors of cement industry, metallurgical industry and glass processing, wherein cement industry has entered into the NSP rotary kiln developing stage taking using predecomposition technology as representative.The dry method production line of China has reached 1000 at present, and traditional cement industry igniting is dried kiln and maintained kiln temperature is that the oil inflame that relies on the oil gun that is installed on burner inside to spray into realizes, and is illustrated in figure 1 existing coal burner schematic diagram.Coal burner 101 entirety are circular multi-channel structure, and the oil gun 102 that the dress of feeling at ease therein can be extracted out, is furnished with center wind duct 103, eddy flow wind path 10 5, coal wind duct 104 and axial flow wind path 10 6 from inside to outside successively.When igniting, oil gun 101 starting ignitions, arrive after uniform temperature in rotary kiln kiln temperature, and coal wind duct 104 starts to throw powder, carries out oily coal multifuel combustion, stop oil gun 102 reaching after higher temperature.According to the size of production line calcination of chamotte ability, in when igniting, the position after the central air hose of control combustion device, micro oil that required air ejects oil gun in central air hose fully burns to utilize central air hose makeup oil to burn.But existing multicenter combustor uses fuel oil more, reach the difference such as the kiln temperature of oil-break coal dust firing and the stability of production line production, more than 50 tons at least of the annual oil consumptions of separate unit dry method production line, at most tons up to a hundred, and to having relatively high expectations of coal quantity, use cost is higher.
Utility model content
In view of this, a technical problem to be solved in the utility model is to provide a kind of multi-channel coal powder combustor, can effectively address the above problem.
A kind of multi-channel coal powder combustor, comprising: igniter, air-distributing disc, air-distributing disc stationary pipes, central air hose, eddy flow airduct, coal wind airduct and axial flow airduct; Described igniter is arranged on the center of this multi-channel coal powder combustor, sets gradually described air-distributing disc stationary pipes, described central air hose, described eddy flow airduct, described coal wind airduct and described axial flow airduct in the periphery of described igniter; Described air-distributing disc arranges central through hole, and described air-distributing disc is socketed in the front end of described igniter, and described air-distributing disc is fixedly connected with the front end of described air-distributing disc stationary pipes; Wherein, under the state of lighting a fire, described coal wind airduct is concordant with the front end face of described axial flow airduct, the front end of described eddy flow airduct and the front end of described central air hose all inwardly shrink the first distance with respect to the front end of described axial flow airduct, the front end of the front end of described igniter and described air-distributing disc stationary pipes all inwardly shrinks second distance with respect to the front end of described axial flow airduct, and described second distance is greater than described the first distance.
According to an embodiment of the present utility model, further, also comprise eddy flow spout ring; Described eddy flow spout ring is arranged between described eddy flow airduct and described central air hose, and the outer ring of described eddy flow spout ring is fixedly connected with the front end of described eddy flow airduct and the front end of described central air hose respectively with inner ring, wherein, on described eddy flow spout ring, multiple spouts are set.
According to an embodiment of the present utility model, further, the outer ring of described eddy flow spout ring and inner ring are threaded with the front end of described eddy flow airduct and the front end of described central air hose respectively.
According to an embodiment of the present utility model, further, also comprise axle wind snout ring; Described axle wind snout ring is arranged between described coal wind airduct and described axial flow airduct, and the inner ring of described axle wind snout ring is fixedly connected with axial flow airduct with described coal wind airduct respectively with outer ring, wherein, on described axle wind snout ring, multiple spouts is set.
According to an embodiment of the present utility model, further, the inner ring of described axle wind snout ring and outer ring are threaded with described coal wind airduct and axial flow airduct respectively.
According to an embodiment of the present utility model, further, described the first distance is 600mm-1200mm.
According to an embodiment of the present utility model, further, multi-turn spray orifice is set on described air-distributing disc, wherein, the spray orifice of every circle is all for being evenly arranged.
According to an embodiment of the present utility model, further, the diameter of described spray orifice is 5mm.
Multi-channel coal powder combustor of the present utility model, can realize the flexible modulation of direct current axle wind and eddy flow wind in exogenous wind, simple to operation, economical and practical, there is the characteristic that adapts to coal wide ranges simultaneously, can light high-quality bituminous coal, also can light colm and anthracite, there is economic benefit and social benefit widely.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram of multi-channel coal powder combustor in prior art;
Fig. 2 is the schematic diagram in the time lighting a fire according to multi-channel coal powder combustor of the present utility model embodiment;
Fig. 3 is the schematic diagram in normal condition according to multi-channel coal powder combustor of the present utility model embodiment;
Fig. 4 is according to the schematic diagram of the air-distributing disc of multi-channel coal powder combustor of the present utility model embodiment.
Detailed description of the invention
With reference to the accompanying drawings the utility model is described more fully, exemplary embodiment of the present utility model is wherein described.Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Below in order to narrate conveniently, hereinafter alleged " left side ", " right side ", " on ", the direction such as left and right, upper and lower of D score etc. and accompanying drawing itself is consistent.
As shown in Figure 2,3, multi-channel coal powder combustor, comprising: igniter 201, air-distributing disc 211, air-distributing disc stationary pipes 210, central air hose 203, eddy flow airduct 205, coal wind airduct 207 and axial flow airduct 209.Igniter 201 is arranged on the center of this multi-channel coal powder combustor, sets gradually air-distributing disc stationary pipes 210, central air hose 203, eddy flow airduct 205, coal wind airduct 207 and axial flow airduct 209 in the periphery of igniter 201.Air-distributing disc 211 arranges central through hole, and air-distributing disc 211 is socketed in the front end of igniter 201, and air-distributing disc 211 is fixedly connected with the front end of air-distributing disc stationary pipes 210, can adopt be threaded, welding, buckle connect etc.The first distance is generally 600mm-1200mm.
Under the state of lighting a fire, coal wind airduct 207 is concordant with the front end face of axial flow airduct 209, the front end of the front end of eddy flow airduct 205 and central air hose 203 all inwardly shrinks the first distance with respect to the front end of axial flow airduct 209, the front end of the front end of igniter 201 and air-distributing disc stationary pipes 210 all inwardly shrinks second distance with respect to the front end of axial flow airduct 209, and second distance is greater than the first distance.
According to an embodiment of the present utility model, eddy flow spout ring 212 is arranged between eddy flow airduct 205 and central air hose 203, and the outer ring of eddy flow spout ring 212 is fixedly connected with the front end of central air hose 203 with the front end of eddy flow airduct 205 respectively with inner ring, on eddy flow spout ring 212, multiple spouts is set.The outer ring of eddy flow spout ring 21 and inner ring are respectively with the front end of eddy flow airduct 205 with the front end of central air hose 203 is threaded, welding, buckle are connected etc.
According to an embodiment of the present utility model, axle wind snout ring 213 is arranged between coal wind airduct 207 and axial flow airduct 209, and the inner ring of axle wind snout ring 213 is fixedly connected with axial flow airduct 209 with coal wind airduct 207 respectively with outer ring, on axle wind snout ring 213, multiple spouts is set.The inner ring of axle wind snout ring 213 is threaded with coal wind airduct 207 and axial flow airduct 209 respectively with outer ring, welding, buckle are connected etc.
As shown in Figure 4, multi-turn spray orifice is set on air-distributing disc, the spray orifice of every circle is all for being evenly arranged.The diameter that spray orifice is is 5mm, 6mm, 7mm etc., and the layout of spray orifice can play and prevent because the heat scaling loss burner refluxing.Spout on air-distributing disc, eddy flow spout ring, axle wind snout ring can adopt poroid spout, and spout structure is contraction and enlargement nozzle, straight nozzle or is Laval-cavity nozzle structure, or is the nozzle arrangements of curve shape.
According to an embodiment of the present utility model, igniter 201 is tiny-oil ignition device, also other types igniter of igniter 201, be arranged in the center of coal burner, air-distributing disc fixed-piping 210 is enclosed within tiny-oil ignition device 201 outsides, air-distributing disc fixed-piping 210 can be in the interior slip of central air hose 203, air-distributing disc fixed-piping 210 forms air channel, center 202 with central air hose 203, central air hose 203 outsides are the eddy flow spout ring 212 of eddy flow airduct 205 and end thereof, between eddy flow airduct 205 and central air hose 203, form eddy flow air channel 204; Coal wind airduct 207 forms coal dust passage 206 with eddy flow airduct 205, and the axle wind snout ring 213 of axial flow airduct 209 and end thereof is supported in coal wind airduct 207 outsides, forms axle wind passage 208.
As shown in Figure 2, at Initial Stage after Ignition, the relative coal wind airduct 207 of eddy flow airduct 205 certain distance of dropping back, the about 600mm-1200mm of this segment distance, this segment distance ensures that the coal dust that fuel oil flame can spray into coal wind duct 206 can fully burn.Its central air hose 203 relative to air-distributing disc 211 and air-distributing disc fixed-piping 210 of tiny-oil ignition device 201 (also can be other types igniter) that is arranged in coal burner center certain distance of dropping back, can meet the abundant burning of fuel oil, can ensure that again central air hose 203 is not burnt.
By relative air-distributing disc stationary pipes central air hose recession certain distance or maintain existing position, micro oil that required air ejects oil gun in central air hose fully burns to utilize central air hose makeup oil to burn, the thermal-flame that its burning produces is directly lighted coal dust, in the time that reaching in rotary kiln material sintering temperature, kiln temperature degree stops oil spout, eddy flow airduct is moved to initial position simultaneously and burn normally, finally realize tiny-oil ignition; During normal calcining, can pass through to adjust the allocation of the amount of air of direct current axle wind and eddy flow wind, thereby the shape of adjusting flame is to meet the requirement of production line calcine technology.
Spray the flame of completing combustion from burner 200, this flame mixes with the Secondary Air of combustor external makes burning completely, after-flame completely.Axle wind air channel 208 and eddy flow air channel 204 are interior during this period can ventilate, not only can cooling eddy flow airduct but also oxygen can be provided, ensure sufficient combustion, the wind simultaneously passing into sprays by eddy flow spout ring 212 and axle wind snout ring 213 respectively, the eddy flow wind forming like this and axle wind can be adjusted shape and the size of flame, the heating curve requirement of more favourable control rotary kiln.
Moving forward and backward of igniter 201, air-distributing disc 211, air-distributing disc stationary pipes 210, central air hose 203, eddy flow airduct 205 etc. is to adjust at leading screw, cylinder and the lift equal power device (not shown in FIG.) at the rear portion of burner by mounting arrangements.
Multicenter combustor of the present utility model, under the prerequisite of micro-oil or few-oil ignition, realize exogenous wind in the flexible modulation of direct current axle wind and eddy flow wind, simple to operation, economical and practical; There is the wide region characteristic that adapts to many coals simultaneously, there is economic benefit and social benefit widely.
According to an embodiment of the present utility model, as shown in Figure 3, complete in igniting, (general kiln end temperature reaches more than 600 DEG C) tiny-oil ignition device 201 out of service when kiln temperature reaches certain value, and can extract tiny-oil ignition device 201 out burner, flat of mobile air-distributing disc 211 and the relative central air hose 203 of air-distributing disc fixed-piping 210, the relative coal wind airduct 207 of eddy flow airduct 205 is also substantially to put down; During this period, the interior ventilation in exogenous wind air channel 209, shape and the size of adjustment flame, meet calcining and technological requirement.
Multi-channel coal powder combustor of the present utility model, also can be for adopting other types igniter, as natural gas, liquefied gas etc.The required coal dust of lighting a fire can be provided without the pulverized coal preparation system of other form and be provided by original pulverized coal preparation system.Multi-channel coal powder combustor of the present utility model, that be applicable to put into operation and just at the cement kiln of installation and debugging, have simple in structure, move the advantages such as simple, easy to maintenance and economy, there is Social benefit and economic benefit widely, also applicable to the transformation of old line.
Multi-channel coal powder combustor of the present utility model, is applied to cement combustor by the station boiler fuel-saving technique of lighting a fire, and saves a large amount of fuel oil while making cement kiln igniting.And it is low to have cost, simple to operate, reliability is high, practical, power saving while better solving the start-up and operation of cement kiln existence, this novel multi-channel coal powder combustor has the characteristic that adapts to coal wide ranges simultaneously, can light high-quality bituminous coal, also can light colm and anthracite.There is economic benefit and social benefit widely.
Above-mentioned arbitrary technical scheme disclosed in the utility model unless otherwise stated, if it discloses number range, so disclosed number range is preferred number range, any it should be appreciated by those skilled in the art: preferred number range is only the obvious or representative numerical value of technique effect in many enforceable numerical value.Because numerical value is more, cannot be exhaustive, so the utility model just discloses part numerical value to illustrate the technical solution of the utility model, and the above-mentioned numerical value of enumerating should not form the restriction of the utility model being created to protection domain.
Simultaneously, if above-mentioned the utility model discloses or has related to parts or the structural member of connection fastened to each other, so, unless otherwise stated, be fixedly connected with and can be understood as: can dismantle and be fixedly connected with (for example using bolt or screw to connect), also can be understood as: non-removable being fixedly connected with (for example rivet, weld), certainly, connection fastened to each other also can for example, be replaced (obviously cannot adopt except integrally formed technique) by integral type structure (use casting technique is integrally formed to be created).
In addition, in the disclosed arbitrary technical scheme of above-mentioned the utility model applied for the term that represents position relationship or shape unless otherwise stated its implication comprise and its approximate, similar or approaching state or shape.Arbitrary parts that the utility model provides can be both to be assembled by multiple independent parts, the produced separate part of the technique that also can be one of the forming.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement detailed description of the invention of the present utility model; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (8)
1. a multi-channel coal powder combustor, is characterized in that, comprising:
Igniter, air-distributing disc, air-distributing disc stationary pipes, central air hose, eddy flow airduct, coal wind airduct and axial flow airduct;
Described igniter is arranged on the center of this multi-channel coal powder combustor, sets gradually described air-distributing disc stationary pipes, described central air hose, described eddy flow airduct, described coal wind airduct and described axial flow airduct in the periphery of described igniter; Described air-distributing disc arranges central through hole, and described air-distributing disc is socketed in the front end of described igniter, and described air-distributing disc is fixedly connected with the front end of described air-distributing disc stationary pipes; Wherein, under the state of lighting a fire, described coal wind airduct is concordant with the front end face of described axial flow airduct, the front end of described eddy flow airduct and the front end of described central air hose all inwardly shrink the first distance with respect to the front end of described axial flow airduct, the front end of the front end of described igniter and described air-distributing disc stationary pipes all inwardly shrinks second distance with respect to the front end of described axial flow airduct, and described second distance is greater than described the first distance.
2. burner as claimed in claim 1, is characterized in that:
Also comprise eddy flow spout ring;
Described eddy flow spout ring is arranged between described eddy flow airduct and described central air hose, and the outer ring of described eddy flow spout ring is fixedly connected with the front end of described eddy flow airduct and the front end of described central air hose respectively with inner ring, wherein, on described eddy flow spout ring, multiple spouts are set.
3. burner as claimed in claim 2, is characterized in that:
The outer ring of described eddy flow spout ring and inner ring are threaded with the front end of described eddy flow airduct and the front end of described central air hose respectively.
4. burner as claimed in claim 1, is characterized in that:
Also comprise axle wind snout ring;
Described axle wind snout ring is arranged between described coal wind airduct and described axial flow airduct, and the inner ring of described axle wind snout ring is fixedly connected with axial flow airduct with described coal wind airduct respectively with outer ring, wherein, on described axle wind snout ring, multiple spouts is set.
5. burner as claimed in claim 4, is characterized in that:
The inner ring of described axle wind snout ring and outer ring are threaded with described coal wind airduct and axial flow airduct respectively.
6. burner as claimed in claim 1, is characterized in that:
Described the first distance is 600mm-1200mm.
7. burner as claimed in claim 1, is characterized in that:
Multi-turn spray orifice is set on described air-distributing disc, and wherein, the spray orifice of every circle is all for being evenly arranged.
8. burner as claimed in claim 7, is characterized in that:
The diameter of described spray orifice is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199391.XU CN203810401U (en) | 2014-04-21 | 2014-04-21 | Multi-channel pulverized coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199391.XU CN203810401U (en) | 2014-04-21 | 2014-04-21 | Multi-channel pulverized coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203810401U true CN203810401U (en) | 2014-09-03 |
Family
ID=51449145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420199391.XU Expired - Lifetime CN203810401U (en) | 2014-04-21 | 2014-04-21 | Multi-channel pulverized coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203810401U (en) |
-
2014
- 2014-04-21 CN CN201420199391.XU patent/CN203810401U/en not_active Expired - Lifetime
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
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| CX01 | Expiry of patent term |