CN104406164A - Pulverized lignite homogeneous phase combustor and combustion method - Google Patents
Pulverized lignite homogeneous phase combustor and combustion method Download PDFInfo
- Publication number
- CN104406164A CN104406164A CN201410696909.5A CN201410696909A CN104406164A CN 104406164 A CN104406164 A CN 104406164A CN 201410696909 A CN201410696909 A CN 201410696909A CN 104406164 A CN104406164 A CN 104406164A
- Authority
- CN
- China
- Prior art keywords
- coal
- nozzle body
- spout
- pulverized
- coal dust
- Prior art date
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
- F23D2201/10—Nozzle tips
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
- F23D2201/20—Fuel flow guiding devices
Abstract
The invention relates to a pulverized lignite homogeneous phase combustor and a combustion method. In design of a large lignite boiler, the design of the combustor is complicated, combustion stability of pulverized lignite is considered, and the coking property of the pulverized lignite is also considered. The pulverized lignite homogeneous phase combustor comprises a pulverized lignite nozzle (8) and a pulverized lignite spout (1); the pulverized lignite nozzle is in a square-circular transitional shape; the circular end of the pulverized lignite nozzle is connected with the pulverized lignite spout through a pin or welded with the pulverized lignite spout; the square end of the pulverized lignite nozzle is mounted with an inlet flange (7); a neck opening (3) is formed in the pulverized lignite nozzle; a set of supporting ear plates (4) are arranged on the pulverized lignite nozzle; a pulverized lignite dividing device (6) is arranged in the pulverized lignite nozzle; a combustor wind box (5) is arranged outside the pulverized lignite nozzle; and a corrugated bluff body (2) is arranged in the pulverized lignite spout. The combustion method is applied to the pulverized lignite homogeneous phase combustor.
Description
technical field:
the present invention relates to a kind of brown coal coal dust homogeneous combustion device and combustion method.
background technology:
in large-scale boiler using brown coal design, the design of burner is more complicated, the smooth combustion of catching fire of coal dust should be considered, consider the coking property of coal dust again, particularly NOx emission is difficult to control, and breathes out pot through theoretical research for many years, and summarizes the practical operation situation of multiple stage boiler using brown coal, just have developed this low-NOx pulverized coal burner with better steady fuel efficiency fruit, strong basis has been established in the design being developed as Chinese large-sized boiler using brown coal of this burner.
summary of the invention:
the object of this invention is to provide a kind of brown coal coal dust homogeneous combustion device and combustion method.
above-mentioned object is realized by following technical scheme:
brown coal coal dust homogeneous combustion device, its composition comprises: coal nozzle body, coal dust spout, described coal nozzle body becomes circumference transition shape, by pin or be welded to connect between the circular one end of described coal nozzle body and coal dust spout, described square one end of coal nozzle body is provided with inlet flange, described coal nozzle body has aditus laryngis, described coal nozzle body both sides are provided with support, there is in described coal nozzle body one group of powder averaging device, described coal nozzle is external has burner wind-box, has ripple bluff body in described coal dust spout.
described brown coal coal dust homogeneous combustion device, described burner wind-box front end has coal nozzle assembly is advanced perforate in place along air compartment baffle, flange on described coal nozzle body is fixed with the end plate connection at burner wind-box rear portion and seals, the pulverized coal channel that described coal nozzle body connects have whole for the coal nozzle body detachable elbow taken out in burner wind-box, described coal nozzle body, the coal dust of pulverized coal injection interruption-forming one sealing, the continuous passage of air mixture, in described coal nozzle body up and down, the coal even separator described in two is respectively installed in left and right, the aditus laryngis corresponding coal dust spout First air coal dust spout of described coal dust device.
a kind ofly described brown coal coal dust homogeneous combustion device is utilized to carry out the method for burning, coal nozzle body both sides are provided with support, by the perforate of burner wind-box front end, can coal nozzle assembly be advanced in place along air compartment baffle, then rear portion is fixed by the end plate connection of the flange on coal nozzle body with burner wind-box rear portion and is sealed, carrying out keeping in repair coal nozzle, during replacing, the elbow of the flange bolt on coal nozzle body and the pulverized coal channel be connected with coal nozzle body can be unloaded, can take out whole for coal nozzle body in burner wind-box, be convenient to maintenance and change First air breeze airflow enter coal nozzle body by pulverized coal channel, coal nozzle body simultaneously, the coal dust of pulverized coal injection interruption-forming one sealing, the continuous passage of air mixture, in coal nozzle body up and down, the each installing in left and right two coal even separators, First air coal dust is after two coal even separators, more even at coal burner spout outlet coal dust, effectively improve fire behaviour, prevent burner nozzle and slagging, First air breeze airflow sends into coal dust spout by Hou Kou after coal dust device distributed uniform, by the ripple bluff body in coal dust spout, high-temperature flue gas is refluxed, improve ability of catching fire, burner hearth is sent into finally by First air coal dust spout, dense outer light First air breeze airflow in being formed.
beneficial effect of the present invention:
1. two coal even separators are respectively installed in upper and lower in coal nozzle body of the present invention, left and right, improve the uniformity of spout outlet coal dust, avoid the coal dust skewness because the structures such as pulverized coal channel elbow cause, make the burning of burner outlet more controlled, more even, effectively improve fire behaviour, prevent burner nozzle and slagging.Also be designed with ripple bluff body at the coal dust spout port of export, can reflux high-temperature flue gas preferably, improves the ability of catching fire of coal dust, effectively reduces the coal dust initial stage to catch fire the generation of NOx.
the coal dust of coal nozzle body of the present invention, pulverized coal injection interruption-forming one sealing, the continuous passage of air mixture, send into burner hearth by the coal air mixture carried by pulverized coal channel through this passage.Coal nozzle body both sides are provided with support, and by the perforate of burner wind-box front end, can advance in place along air compartment baffle by coal nozzle assembly, rear portion is fixed by the end plate connection of the flange on coal nozzle body with burner wind-box rear portion and sealed it.On-the-spot blowing out need be keeped in repair coal nozzle, when changing, the elbow of the flange bolt on coal nozzle body and the pulverized coal channel be connected with coal nozzle body can be unloaded, can take out whole for coal nozzle body in burner wind-box, be convenient to maintenance and change.
accompanying drawing illustrates:
accompanying drawing 1 is structural representation of the present invention.
accompanying drawing 2 is top views of the present invention.
detailed description of the invention:
embodiment 1:
a kind of brown coal coal dust homogeneous combustion device, its composition comprises: coal nozzle body 8, coal dust spout 1, described coal nozzle body becomes circumference transition shape, by pin or be welded to connect between the circular one end of described coal nozzle body and coal dust spout, described square one end of coal nozzle body is provided with inlet flange 7, described coal nozzle body has aditus laryngis 3, described coal nozzle body has one group and support otic placode 4, there is in described coal nozzle body one group of powder averaging device 6, described coal nozzle is external has burner wind-box 5, in described coal dust spout, there is ripple bluff body 2.
embodiment 2:
brown coal coal dust homogeneous combustion device described in embodiment 1, described burner wind-box front end has coal nozzle assembly is advanced perforate 9 in place along air compartment baffle, flange on described coal nozzle body is fixed with the end plate connection at burner wind-box rear portion and seals, the pulverized coal channel that described coal nozzle body connects have whole for the coal nozzle body detachable elbow taken out in burner wind-box, described coal nozzle body, the coal dust of pulverized coal injection interruption-forming one sealing, the continuous passage of air mixture, in described coal nozzle body up and down, the each installing in left and right two coal even separators, the aditus laryngis corresponding coal dust spout First air coal dust spout of described coal dust device.
embodiment 3:
the combustion method of the employing brown coal coal dust homogeneous combustion device according to embodiment 1 or 2, first coal nozzle body both sides are provided with support, by the perforate of burner wind-box front end, can coal nozzle assembly be advanced in place along air compartment baffle, then rear portion is fixed by the end plate connection of the flange on coal nozzle body with burner wind-box rear portion and is sealed, carrying out keeping in repair coal nozzle, during replacing, the elbow of the flange bolt on coal nozzle body and the pulverized coal channel be connected with coal nozzle body can be unloaded, can take out whole for coal nozzle body in burner wind-box, be convenient to maintenance and change First air breeze airflow enter coal nozzle body by pulverized coal channel, coal nozzle body simultaneously, the coal dust of pulverized coal injection interruption-forming one sealing, the continuous passage of air mixture, in coal nozzle body up and down, the each installing in left and right two coal even separators, First air coal dust is after two coal even separators, more even at coal burner spout outlet coal dust, effectively improve fire behaviour, prevent burner nozzle and slagging, First air breeze airflow sends into coal dust spout by Hou Kou after coal dust device distributed uniform, by the ripple bluff body in coal dust spout, high-temperature flue gas is refluxed, improve ability of catching fire, burner hearth is sent into finally by First air coal dust spout, dense outer light First air breeze airflow in being formed.
Claims (3)
1. a brown coal coal dust homogeneous combustion device, its composition comprises: coal nozzle body, coal dust spout, it is characterized in that: described coal nozzle body becomes circumference transition shape, the circular one end of described coal nozzle body is connected with coal dust spout, described square one end of coal nozzle body is provided with inlet flange, described coal nozzle body has aditus laryngis, described coal nozzle body both sides are provided with support, there is in described coal nozzle body one group of powder averaging device, described coal nozzle is external has burner wind-box, has ripple bluff body in described coal dust spout.
2. brown coal coal dust homogeneous combustion device according to claim 1, it is characterized in that: described burner wind-box front end has coal nozzle assembly is advanced perforate in place along air compartment baffle, flange on described coal nozzle body is fixed with the end plate connection at burner wind-box rear portion and seals, the pulverized coal channel that described coal nozzle body connects have whole for the coal nozzle body detachable elbow taken out in burner wind-box, described coal nozzle body, the coal dust of pulverized coal injection interruption-forming one sealing, the continuous passage of air mixture, in described coal nozzle body up and down, the coal even separator described in two is respectively installed in left and right, the aditus laryngis corresponding coal dust spout First air coal dust spout of described coal dust device.
3. the method utilizing the brown coal coal dust homogeneous combustion device described in claim 1 or 2 to carry out burning, it is characterized in that: first coal nozzle body both sides are provided with support, by the perforate of burner wind-box front end, can coal nozzle assembly be advanced in place along air compartment baffle, then rear portion is fixed by the end plate connection of the flange on coal nozzle body with burner wind-box rear portion and is sealed, carrying out keeping in repair coal nozzle, during replacing, the elbow of the flange bolt on coal nozzle body and the pulverized coal channel be connected with coal nozzle body can be unloaded, can take out whole for coal nozzle body in burner wind-box, be convenient to maintenance and change First air breeze airflow enter coal nozzle body by pulverized coal channel, coal nozzle body simultaneously, the coal dust of pulverized coal injection interruption-forming one sealing, the continuous passage of air mixture, in coal nozzle body up and down, the each installing in left and right two coal even separators, First air coal dust is after two coal even separators, more even at coal burner spout outlet coal dust, effectively improve fire behaviour, prevent burner nozzle and slagging, First air breeze airflow sends into coal dust spout by Hou Kou after coal dust device distributed uniform, by the ripple bluff body in coal dust spout, high-temperature flue gas is refluxed, improve ability of catching fire, burner hearth is sent into finally by First air coal dust spout, dense outer light First air breeze airflow in being formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410696909.5A CN104406164A (en) | 2014-11-28 | 2014-11-28 | Pulverized lignite homogeneous phase combustor and combustion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410696909.5A CN104406164A (en) | 2014-11-28 | 2014-11-28 | Pulverized lignite homogeneous phase combustor and combustion method |
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| Publication Number | Publication Date |
|---|---|
| CN104406164A true CN104406164A (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410696909.5A Pending CN104406164A (en) | 2014-11-28 | 2014-11-28 | Pulverized lignite homogeneous phase combustor and combustion method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546566A (en) * | 2016-01-28 | 2016-05-04 | 浙江宜清环境技术有限公司 | Stable combustion device for low volatile lean coal |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138371A (en) * | 1993-12-22 | 1996-12-18 | 燃烧工程有限公司 | Modular coal nozzle assembly for vapor generation apparatus |
| JP3343855B2 (en) * | 1998-01-30 | 2002-11-11 | 株式会社日立製作所 | Pulverized coal combustion burner and combustion method of pulverized coal combustion burner |
| CN1551964A (en) * | 2001-07-03 | 2004-12-01 | ��ķ�Ƽ���������˾ | Pulverized solid fuel nozzle tip with ceramic component |
| CN201348244Y (en) * | 2008-12-17 | 2009-11-18 | 哈尔滨锅炉厂有限责任公司 | Fixed pulverized coal nozzle of central air multi-channel lignite burner |
| CN201496957U (en) * | 2009-07-31 | 2010-06-02 | 戴卫军 | Cyclone pulverized coal burner |
| CN204240350U (en) * | 2014-11-28 | 2015-04-01 | 哈尔滨锅炉厂有限责任公司 | Brown coal coal dust homogeneous combustion device |
-
2014
- 2014-11-28 CN CN201410696909.5A patent/CN104406164A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138371A (en) * | 1993-12-22 | 1996-12-18 | 燃烧工程有限公司 | Modular coal nozzle assembly for vapor generation apparatus |
| JP3343855B2 (en) * | 1998-01-30 | 2002-11-11 | 株式会社日立製作所 | Pulverized coal combustion burner and combustion method of pulverized coal combustion burner |
| CN1551964A (en) * | 2001-07-03 | 2004-12-01 | ��ķ�Ƽ���������˾ | Pulverized solid fuel nozzle tip with ceramic component |
| CN201348244Y (en) * | 2008-12-17 | 2009-11-18 | 哈尔滨锅炉厂有限责任公司 | Fixed pulverized coal nozzle of central air multi-channel lignite burner |
| CN201496957U (en) * | 2009-07-31 | 2010-06-02 | 戴卫军 | Cyclone pulverized coal burner |
| CN204240350U (en) * | 2014-11-28 | 2015-04-01 | 哈尔滨锅炉厂有限责任公司 | Brown coal coal dust homogeneous combustion device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546566A (en) * | 2016-01-28 | 2016-05-04 | 浙江宜清环境技术有限公司 | Stable combustion device for low volatile lean coal |
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| PB01 | Publication | ||
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Application publication date: 20150311 |