CN202757119U - Ignition device for fan-grinder milling boiler - Google Patents
Ignition device for fan-grinder milling boiler Download PDFInfo
- Publication number
- CN202757119U CN202757119U CN 201220404207 CN201220404207U CN202757119U CN 202757119 U CN202757119 U CN 202757119U CN 201220404207 CN201220404207 CN 201220404207 CN 201220404207 U CN201220404207 U CN 201220404207U CN 202757119 U CN202757119 U CN 202757119U
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- Prior art keywords
- burner
- ignition
- coal
- coal dust
- igniter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000003801 milling Methods 0.000 title abstract 4
- 239000003245 coal Substances 0.000 claims abstract description 57
- 239000000843 powder Substances 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 239000002817 coal dust Substances 0.000 claims description 43
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 25
- 239000003546 flue gas Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 17
- 239000004519 grease Substances 0.000 claims description 5
- 239000000779 smoke Substances 0.000 abstract 3
- 230000007547 defect Effects 0.000 abstract 1
- 238000000227 grinding Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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Abstract
The utility model discloses an ignition device for a fan-grinder milling boiler. The ignition device for the fan-grinder milling boiler comprises a coal powder ignition burner (1), a coal powder concentration device (7), a high temperature stove smoke tube heating device (5), and an ignition auxiliary device (3). The coal powder ignition burner (1) is arranged on the outer surface of a hearth (6). The coal powder concentration device (7) is arranged at the upper end of the coal powder ignition burner (1). The ignition auxiliary device (3) which is used to provide an ignition source for coal powder is arranged on the side wall of the coal powder ignition burner (1). The high temperature stove smoke tube heating device (5) is arranged on the side wall of a high temperature stove smoke tube (4). The coal powder which is sent out from a coal mill (2) is delivered to the coal powder ignition burner (1) through the coal powder concentration device (7). According to the ignition device for the fan-grinder milling boiler, defects that a large burner coal powder concentration is low and a cold boiler makes powder are overcome. Therefore starting the boiler in code condition is achieved, and energy is saved.
Description
Technical field
The utility model relates to the boiler combustion technology field, relates in particular to a kind of igniter for fan mill powder process boiler.
Background technology
The pulverized coal preparation system of boiler is the important component part in thermal power plant, and its task is the requirement according to boiler combustion, grinds out qualified coal dust, to guarantee boiler safety, stable, economical operation.In ball mill when operation,, its noise is very large, steel ball and wear liner amount are also very large.In addition, because the variation of raw coal moisture content, ature of coal (fugitive constituent, ash, grindability index etc.), and reasons such as steel balls, wear liner, ball mill not only characteristic is complicated, and becomes slowly the time, so that very large to its optimization and control difficulty.Be difficult to Optimized Matching between coal-grinding, drying, the conveying output capacity, powder process power consumption (comprise the coal-grinding power consumption and ventilate defeated powder power consumption) is long-term high, so that pulverized coal preparation system moves under underload for a long time, and economy is very poor.
The fanned powder-grinding system boiler also claims fan mill powder process boiler, is a kind of more common boiler, adopts the mode of fan mill powder process.The burner of fanned powder-grinding system boiler is very special, and because burner dimensions is very large and the black furnace pulverized coal preparation system is difficult to realize, therefore, classic ignition system can't meet the demands.At present, only carry out reducing energy consumption by the mode that changes the large Oil Gun of little routine, energy-saving effect is very little.
Summary of the invention
In view of this, a technical problem to be solved in the utility model provides a kind of igniter for fan mill powder process boiler, can increase the burner coal powder density and can realize that cold conditions opens stove.
A kind of igniter for fan mill powder process boiler, described fan mill powder process boiler comprises coal pulverizer 2, high temperature boiler flue gas tube 4 and burner hearth 6; Described igniter comprises: coal dust start-up burner 1, Pulverized Coal Concentration device 7, high-temperature flue gas pipe heating device 5, igniting accessory system 3; Outer surface at described burner hearth 6 arranges described coal dust start-up burner 1, and the end of described coal dust start-up burner 1 arranges described Pulverized Coal Concentration device 7, provides the described ignition-assist apparatus 3 of coal powder point burning things which may cause a fire disaster to be arranged on the sidewall of described coal dust start-up burner 1; Described high-temperature flue gas pipe heating device 5 is arranged on the sidewall of described high temperature boiler flue gas tube 4; Coal dust from described coal pulverizer 2 outputs enters described coal dust start-up burner 1 by described Pulverized Coal Concentration device 7.
According to an embodiment of igniter of the present utility model, further, comprise a plurality of described coal dust start-up burners 1, described a plurality of described coal dust start-up burners 1 arrange along the vertical direction interval of burner hearth 6.
According to an embodiment of igniter of the present utility model, further, the number of described a plurality of described coal dust start-up burners 1 is 3,4,5 or 6.
According to an embodiment of igniter of the present utility model, further, 2 or 2 the above ignition-assist apparatus 3 are set on the sidewall of each described coal dust start-up burner 1.
An embodiment according to igniter of the present utility model, further, 2 described ignition-assist apparatus 3 are set on the sidewall of each described coal dust start-up burner 1, and described 2 described ignition-assist apparatus 3 are respectively grease gun igniting burner and plasma pulverized coal ignition burner.
An embodiment according to igniter of the present utility model, further, described high-temperature flue gas pipe heating device comprises: will enter by described high temperature boiler flue gas tube the igniting oil burner of the air heat of described coal pulverizer, described igniting oil burner comprises one or many oil guns.
According to an embodiment of igniter of the present utility model, further, described high-temperature flue gas pipe heating device comprises: the Image Fire checking device.
Igniter for fan mill powder process boiler of the present utility model, can realize that cold conditions opens stove and can be energy-conservation, solve conventional igniter and can't be applied to the fanned powder-grinding system boiler, the problem of large-scale combustor ignition difficulties, and solved fan mill black furnace powder process difficulties.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do one to the accompanying drawing of required use in embodiment or the description of the Prior Art and introduce simply, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram according to an embodiment of the igniter for fan mill powder process boiler of the present utility model.
The specific embodiment
With reference to the accompanying drawings the utility model is described more fully, exemplary embodiment of the present utility model wherein is described.Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.Below in conjunction with figure and embodiment the technical solution of the utility model is carried out many-sided description.
Fig. 1 is the schematic diagram according to an embodiment of the igniter for fan mill powder process boiler of the present utility model.As shown in Figure 1: fan mill powder process boiler comprises coal pulverizer 2, high temperature boiler flue gas tube 4 and burner hearth 6.Igniter comprises: coal dust start-up burner 1, Pulverized Coal Concentration device 7, high-temperature flue gas pipe heating device 5, igniting accessory system 3.
Outer surface at burner hearth 6 arranges coal dust start-up burner 1, and the end of coal dust start-up burner 1 arranges Pulverized Coal Concentration device 7, provides the ignition-assist apparatus 3 of coal powder point burning things which may cause a fire disaster to be arranged on the sidewall of coal dust start-up burner 1.High-temperature flue gas pipe heating device 5 is arranged on the sidewall of high temperature boiler flue gas tube 4; Coal dust from coal pulverizer 2 outputs enters coal dust start-up burner 1 by Pulverized Coal Concentration device 7.
According to an embodiment of the present utility model, coal pulverizer 2 corresponding one or more coal dust start-up burners 1, a plurality of coal dust start-up burners 1 arrange along the vertical direction interval of burner hearth 6.The number of a plurality of coal dust start-up burners 1 is 3,4,5 or 6.2 or 2 above ignition-assist apparatus 3 are set on the sidewall of each coal dust start-up burner 1.2 or 2 above ignition-assist apparatus 3 are set on the sidewall of each described coal dust start-up burner 1, and ignition-assist apparatus 3 can be grease gun igniting burner and plasma pulverized coal ignition burner.3,2 described ignition-assist apparatus 3 of 2 ignition-assist apparatus are set on the sidewall of each coal dust start-up burner 1 are respectively grease gun igniting burner and plasma pulverized coal ignition burner.2 or 2 above ignition-assist apparatus 3 can be for setting up and down or be symmetrical set.
According to an embodiment of the present utility model, high-temperature flue gas pipe heating device 5 comprises: will enter by high temperature boiler flue gas tube the igniting oil burner of the air heat of coal pulverizer 2, the igniting oil burner comprises one or many oil guns.The high-temperature flue gas pipe heating device comprises: Image Fire checking device, the situation that can carry out visual inspection burning.
The Pulverized Coal Concentration device is the pulverized coal concentrator that is built in coal dust start-up burner inside.High-temperature flue gas pipe heating device 5 also comprises the igniting accessory system of self.Pass in the high temperature boiler flue gas tube 4 behind mill cold wind, by systems such as igniting oil burners this cold wind is heated.
According to an embodiment of the present utility model, Pulverized Coal Concentration device 7 is used for the primary wind and powder air-flow is concentrated, and forms the higher wind powder air-flow of coal powder density.Pulverized Coal Concentration device 7 can be inspissator and the pipeline inspissator that is built in coal dust start-up burner.The inspissator general structure that is built in the coal dust start-up burner is to be built in the concentrated block in the coal dust start-up burner, concentrated ring or shutter etc.Pipeline inspissator structure is to be built in elbow in the pulverized coal channel or shutter etc.Can carry out the effectively concentrated of coal dust by Pulverized Coal Concentration device 7.
Energy-saving ignition device of the present utility model is coal dust start-up burner 1 by transforming vertically arranged a plurality of burners (2～6) corresponding to fan mill, utilizes the Pulverized Coal Concentration device to carry out the Pulverized Coal Concentration igniting.Because burner dimensions is larger, in order to guarantee to light a fire preferably effect, adopt each coal dust start-up burner 1 to arrange the scheme of 2 or 2 above ignition installations (can about arrange or arrange up and down), perhaps adopt the eccentrically arranged type start-up burner also namely to isolate the burner of a part of weary gas.
Adopted the scheme of in high temperature boiler flue gas tube, arranging heater, thereby realized that cold conditions opens stove.Incendiary source adopts the accessory systems such as few-oil ignition or plasma ignition.Implement by above series of key techniques, thereby solved the difficult problem that the fanned powder-grinding system boiler energy-saving is transformed, realized the significant energy-conservation possibility of the type boiler.
The igniting accessory system is put 3 and can be grease gun igniting burner and plasma pulverized coal ignition burner, can also be few-oil ignition accessory system and plasma ignition accessory system.Wherein, the few-oil ignition accessory system generally comprises oil combustion device, fuel piping system, compressed air line system, combustion air pipe-line system, control system and fire monitor equipment etc.The plasma accessory system generally comprises plasma generator, power-supply system, cooling water system, carrier wind system etc.No matter be that plasma ignition accessory system or few-oil ignition accessory system all are to produce incendiary source by this system, be used for firing coal-dust.
Igniter of the present utility model is for large-scale combustion device coal powder density problem on the low side, by the Pulverized Coal Concentration device solves.For the selection of black furnace pulverized coal preparation system original creation high temperature boiler flue gas tube set up the scheme of heater, solved black furnace powder process problem.Further adopted the scheme of every burner arrangement two cover incendiary sources or taked eccentrically arranged type burner scheme, because these two kinds of burners have solved the problem of large-scale combustors ignition difficulties.This igniter can solve present fanned powder-grinding system ignition of the boiler hard problem, reaches preferably oil-saving effect.
Description of the present utility model provides for example with for the purpose of describing, and is not exhaustively or with the utility model to be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present utility model and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment with various modifications that the utility model design is suitable for special-purpose.
Claims (7)
1. igniter that is used for fan mill powder process boiler, described fan mill powder process boiler comprises: coal pulverizer (2), high temperature boiler flue gas tube (4) and burner hearth (6); It is characterized in that, described igniter comprises:
Coal dust start-up burner (1), Pulverized Coal Concentration device (7), high-temperature flue gas pipe heating device (5) and ignition-assist apparatus (3);
Outer surface at described burner hearth (6) arranges described coal dust start-up burner (1), the top of described coal dust start-up burner (1) arranges described Pulverized Coal Concentration device (7), provides the described ignition-assist apparatus (3) of coal powder point burning things which may cause a fire disaster to be arranged on the sidewall of described coal dust start-up burner (1); Described high-temperature flue gas pipe heating device (5) is arranged on the sidewall of described high temperature boiler flue gas tube (4); Coal dust from described coal pulverizer (2) output enters described coal dust start-up burner (1) by described Pulverized Coal Concentration device (7).
2. igniter as claimed in claim 1 is characterized in that:
Described igniter comprises a plurality of described coal dust start-up burners (1); Described a plurality of described coal dust start-up burners (1) arrange along the vertical direction interval of burner hearth (6).
3. igniter as claimed in claim 2 is characterized in that:
The number of described a plurality of described coal dust start-up burners (1) is 3,4,5 or 6.
4. igniter as claimed in claim 3 is characterized in that:
2 or 2 the above ignition-assist apparatus (3) are set on the sidewall of each described coal dust start-up burner (1).
5. igniter as claimed in claim 3 is characterized in that:
2 described ignition-assist apparatus (3) are set on the sidewall of each described coal dust start-up burner (1), and described 2 described ignition-assist apparatus (3) are respectively grease gun igniting burner and plasma pulverized coal ignition burner.
6. igniter as claimed in claim 1 is characterized in that:
Described high-temperature flue gas pipe heating device (5) comprising: will enter by described high temperature boiler flue gas tube (4) the igniting oil burner of the air heat of described coal pulverizer (2);
Described igniting oil burner comprises one or many oil guns.
7. igniter as claimed in claim 6 is characterized in that:
Described high-temperature flue gas pipe heating device (5) comprising: the Image Fire checking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220404207 CN202757119U (en) | 2012-08-15 | 2012-08-15 | Ignition device for fan-grinder milling boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220404207 CN202757119U (en) | 2012-08-15 | 2012-08-15 | Ignition device for fan-grinder milling boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202757119U true CN202757119U (en) | 2013-02-27 |
Family
ID=47736299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220404207 Expired - Lifetime CN202757119U (en) | 2012-08-15 | 2012-08-15 | Ignition device for fan-grinder milling boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202757119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591574A (en) * | 2012-08-15 | 2014-02-19 | 烟台龙源电力技术股份有限公司 | Ignition apparatus used for fan milled powder boiler |
-
2012
- 2012-08-15 CN CN 201220404207 patent/CN202757119U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591574A (en) * | 2012-08-15 | 2014-02-19 | 烟台龙源电力技术股份有限公司 | Ignition apparatus used for fan milled powder boiler |
| CN103591574B (en) * | 2012-08-15 | 2015-12-09 | 烟台龙源电力技术股份有限公司 | A kind of igniter for fan mill powder process boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130227 Effective date of abandoning: 20151209 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |