CN108930960A - A kind of bluff body of environmental protection coal burner - Google Patents
A kind of bluff body of environmental protection coal burner Download PDFInfo
- Publication number
- CN108930960A CN108930960A CN201810826261.7A CN201810826261A CN108930960A CN 108930960 A CN108930960 A CN 108930960A CN 201810826261 A CN201810826261 A CN 201810826261A CN 108930960 A CN108930960 A CN 108930960A
- Authority
- CN
- China
- Prior art keywords
- bluff body
- diameter face
- hole
- ventilation circuit
- major diameter
- 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.)
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Classifications
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- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a kind of bluff bodies of environmentally friendly coal burner, it is fixedly installed in First air channel at first nozzle center, the bluff body is laterally disposed rotary table, including smaller diameter face and major diameter face, and the breeze airflow in First air channel flows to major diameter face through bluff body smaller diameter face；The bluff body is equipped with through-hole, and the through-hole diameter is consistent, and smaller diameter face and major diameter face of the through-hole through bluff body；The bluff body further includes the ventilation circuit being connected with through-hole, the ventilation circuit is ring-type, and is laterally extended to major diameter face, and the annular diameters of the ventilation circuit are gradually expanded to major diameter face, and outlet annular distance is formed in major diameter face, the ventilation circuit wall and through-hole form angle a.Ventilation circuit structure in the present invention contributes to form multilayer breeze airflow, and coal dust firing nitrogen oxides generated is effectively reduced, and reaches the requirement of environmental protection.
Description
Technical field
The present invention relates to heat energy technology fields, more particularly to a kind of bluff body of new coal powder burner.
Background technique
Coal burner, refers to allow coal dust full combustion in a short time, the equipment for generating high temperature eddy current.According to
On the way, coal burner is divided into: 1, the dedicated coal burner of rotary kiln；2, steam coal powder burner；3, asphalt blending station is dedicated
Coal burner.
The bluff body of coal burner at present, structure is relatively simple, and the mixing of coal dust and combustion air is more violent, leads to coal dust
It burns in the environment of peroxide, high temperature rapidly, forms localized hyperthermia, and then generate a large amount of prompt NOs, seriously affect
Environment.If additionally increasing flue gas purifying equipment, need to put into an expense again, and generate additional long-term consumption, it is unfavorable
In production.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of bluff bodies of new coal powder burner.
The technical scheme adopted by the invention is that: it is logical to be fixedly installed in First air for a kind of bluff body of environmental protection coal burner
In road at first nozzle center, the bluff body is laterally disposed rotary table, including smaller diameter face and major diameter face, First air channel
In breeze airflow flow to major diameter face through bluff body smaller diameter face；The bluff body is equipped with through-hole, and the through-hole diameter is consistent,
And smaller diameter face and major diameter face of the through-hole through bluff body；The bluff body further includes the ventilation circuit being connected with through-hole, institute
Ventilation circuit is stated as ring-type, and is laterally extended to major diameter face, the annular diameters of the ventilation circuit to major diameter face gradually
Expand, and form outlet annular distance in major diameter face, the ventilation circuit wall and through-hole form angle a.
Further, it is connected in the middle part of the ventilation circuit and through-hole.
Further, the ring width of the ventilation circuit is no more than 20mm.
Further, the cross section of the ventilation circuit is annular shape.
Further, the angle a that the ventilation circuit wall and through-hole are formed is 15 ° -20 °.
Further, the through-hole diameter is less than bluff body smaller diameter face diameter.
Compared with prior art, the beneficial effects of the present invention are:
The structure of through-hole and ventilation circuit contributes to form multilayer breeze airflow in the present invention, reduces connecing for coal dust and air
Touching, controls the rate of coal dust firing, avoids coal dust oxygen-excess combustion, can effectively reduce the production of a large amount of prompt NOs
Amount reaches the requirement of environmental protection.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the bluff body of the environmentally friendly coal burner of the present invention；
Fig. 2 is the right view of Fig. 1.
Wherein: 1- First air channel, 2- bluff body, 3- ventilation circuit, 4- outlet annular distance, 21- smaller diameter face, 22- major diameter
Face, 23- through-hole.
Specific embodiment
In order to deepen the understanding of the present invention, present invention will be further explained below with reference to the attached drawings and examples, the implementation
Example for explaining only the invention, does not constitute protection scope of the present invention and limits.
As depicted in figs. 1 and 2, a kind of bluff body of environmentally friendly coal burner, is fixedly installed in First air channel 1 and once sprays
At mouthful center, the bluff body 2 is laterally disposed rotary table, including smaller diameter face 21 and major diameter face 22, in First air channel 1
Breeze airflow flows to major diameter face 22 through 2 smaller diameter face 21 of bluff body；The bluff body 2 is equipped with through-hole 23, and 23 diameter of through-hole is protected
It holds unanimously, and smaller diameter face 21 and major diameter face 22 of the through-hole 23 through bluff body 2；The bluff body 2 further includes and 23 phase of through-hole
The ventilation circuit 3 of connection, the ventilation circuit 3 is ring-type, and is laterally extended to major diameter face 22, the ventilation circuit 3
Annular diameters are gradually expanded to major diameter face 22, and major diameter face 22 formed outlet annular distance 4,3 wall of ventilation circuit and
Through-hole 23 forms angle a.
In the above-described embodiments, when coal burner works, breeze airflow in First air channel 1 is by bluff body 2 and primary
Spatial flow between 1 inner wall of wind channel sets the exit in First air channel 1, forms first layer breeze airflow；In First air channel 1
Breeze airflow by the through-hole 23 of 2 smaller diameter face 21 of bluff body flow through ventilation circuit 3, by outlet annular distance 4 flow out bluff body, formed second
Layer breeze airflow, the structure are layered breeze airflow, reduce the ignition temperature of coal dust, delayed the reaction time, reduce quickly
The generation of type nitrogen oxides, to reach energy-saving and environment-friendly purpose.
In the above-described embodiments, it is connected in the middle part of ventilation circuit 3 and through-hole 23, and the ring width for circuit 3 of ventilating is no more than
The angle a that 20mm, ventilation 3 wall of circuit and through-hole 23 are formed is 15 ° -20 °, and size design is reasonable, can either be effectively combustion-supporting, and not
It can make coal dust peroxide, high-temp combustion, generate a large amount of polluters.
What the embodiment of the present invention was announced is preferred embodiment, and however, it is not limited to this, the ordinary skill people of this field
Member, easily according to above-described embodiment, understands spirit of the invention, and make different amplification and variation, but as long as not departing from this
The spirit of invention, all within the scope of the present invention.
Claims (6)
1. a kind of bluff body of environmental protection coal burner, is fixedly installed in First air channel at first nozzle center, feature exists
In: the bluff body is laterally disposed rotary table, including smaller diameter face and major diameter face, and the breeze airflow in First air channel is through blunt
Body smaller diameter face flows to major diameter face；The bluff body is equipped with through-hole, and the through-hole diameter is consistent, and through-hole runs through bluff body
Smaller diameter face and major diameter face；The bluff body further includes the ventilation circuit being connected with through-hole, and the ventilation circuit is ring-type,
And it is laterally extended to major diameter face, the annular diameters of the ventilation circuit are gradually expanded to major diameter face, and in major diameter
Face forms outlet annular distance, and the ventilation circuit wall and through-hole form angle a.
2. the bluff body of environmental protection coal burner according to claim 1, it is characterised in that: in the ventilation circuit and through-hole
Portion is connected.
3. the bluff body of environmental protection coal burner according to claim 1 or 2, it is characterised in that: the ring of the ventilation circuit
Width is no more than 20mm.
4. the bluff body of environmental protection coal burner according to claim 3, it is characterised in that: the cross section of the ventilation circuit
For annular shape.
5. the bluff body of environmental protection coal burner according to claim 1, it is characterised in that: the ventilation circuit wall and through-hole
The angle a of formation is 15 ° -20 °.
6. the bluff body of environmental protection coal burner according to claim 1, it is characterised in that: the through-hole diameter is less than bluff body
Smaller diameter face diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810826261.7A CN108930960A (en) | 2018-07-25 | 2018-07-25 | A kind of bluff body of environmental protection coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810826261.7A CN108930960A (en) | 2018-07-25 | 2018-07-25 | A kind of bluff body of environmental protection coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108930960A true CN108930960A (en) | 2018-12-04 |
Family
ID=64444625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810826261.7A Pending CN108930960A (en) | 2018-07-25 | 2018-07-25 | A kind of bluff body of environmental protection coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108930960A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB127851A (en) * | 1917-05-29 | 1919-06-19 | Robert Abbott Hadfield | Improvements in or relating to Bullets. |
| CN2325646Y (en) * | 1997-12-31 | 1999-06-23 | 华中理工大学 | Burner |
| CN201137933Y (en) * | 2007-08-06 | 2008-10-22 | 章联兵 | Low NOx coal fines thick and thin oil-saving burner |
| CN101696801A (en) * | 2009-10-22 | 2010-04-21 | 中国计量学院 | Little oil burner of double-sided ignition combination blunt body |
| CN204574021U (en) * | 2015-03-20 | 2015-08-19 | 陈瑞 | The spray gun of fluidized solids fuel |
| CN206724168U (en) * | 2017-05-22 | 2017-12-08 | 北京醇能科技有限公司 | A kind of low boiling fuel burner |
-
2018
- 2018-07-25 CN CN201810826261.7A patent/CN108930960A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB127851A (en) * | 1917-05-29 | 1919-06-19 | Robert Abbott Hadfield | Improvements in or relating to Bullets. |
| CN2325646Y (en) * | 1997-12-31 | 1999-06-23 | 华中理工大学 | Burner |
| CN201137933Y (en) * | 2007-08-06 | 2008-10-22 | 章联兵 | Low NOx coal fines thick and thin oil-saving burner |
| CN101696801A (en) * | 2009-10-22 | 2010-04-21 | 中国计量学院 | Little oil burner of double-sided ignition combination blunt body |
| CN204574021U (en) * | 2015-03-20 | 2015-08-19 | 陈瑞 | The spray gun of fluidized solids fuel |
| CN206724168U (en) * | 2017-05-22 | 2017-12-08 | 北京醇能科技有限公司 | A kind of low boiling fuel burner |
Non-Patent Citations (2)
| Title |
|---|
| 张松寿: "《工程燃烧学》", 30 January 1988 * |
| 翁史烈: "《湿空气透平循环的基础研究》", 30 January 2008 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181204 |