CN102226521B - Positive pressure strike coal burner - Google Patents
Positive pressure strike coal burner Download PDFInfo
- Publication number
- CN102226521B CN102226521B CN2011101473526A CN201110147352A CN102226521B CN 102226521 B CN102226521 B CN 102226521B CN 2011101473526 A CN2011101473526 A CN 2011101473526A CN 201110147352 A CN201110147352 A CN 201110147352A CN 102226521 B CN102226521 B CN 102226521B
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- combustion chamber
- side wall
- communicated
- coal burner
- cavity
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Abstract
The invention specially relates to a positive pressure strike coal burner which can be used for solving the defects in the existing coal burner and comprises a combustion chamber, the combustion chamber consists of a kinetic area and a transition area which are distributed left and right, and the diameter of the kinetic area is larger than that of the transition area, the side wall of the transition area is provided with a plurality of broken air holes, a mixed cavity is arranged on the left end of the combustion chamber and tangented and communicated with the combustion chamber, the right side of the mixed cavity is provided with an auxiliary box which is sleeved on the side wall of the combustion chamber, the auxiliary box is provided with a secondary air cavity which is communicated with the left end of the auxiliary box, the right side wall of the secondary air cavity is provided with an arc-shaped wind belt hole which is communicated with a hearth, a boosting pipe is arranged between the secondary air cavity and the left side wall of the combustion chamber and communicated with the secondary air cavity and the left side wall of the combustion chamber. The positive pressure strike coal burner provided by the invention has the advantages that the structural design is reasonable and reliable, the burning is full and stable, the adaptation rang of the coal is expanded, the service life is extended, simultaneously, the generated harmful gas is reduced, the environmentally-friendly performance is improved, the structure is simple, the operation is easy, and the cost is low.
Description
Technical field
The present invention relates to coal burner, be specially a kind of malleation bump coal burner.
Background technology
Coal burner is meant to supply the coal air mixture (wind) that comes and the required secondary wind of burning to inject burner hearth with certain concentration and speed respectively coal dust preparation system, under suspended state, realizes the device of stable ignition and burning.There is following weak point in traditional coal burner: 1, with burner hearth apart from weak point, the burning wind speed fast, cause the sordid problem of carbon burning in the coal dust; 2, light the back programming rate slow, the carbon in the coal dust can not be burnt as early as possible; 3, in burner hearth, there are dust stratification and slagging scorification phenomenon; 4, can not use the low calorie fuels coal that is lower than 5500kcal/kg, have limitation; 5, burning is insufficient, and efficiency of combustion is low.
Summary of the invention
The present invention provides a kind of malleation bump coal burner in order to solve the problem that there is above-mentioned weak point in existing coal burner.
The present invention adopts following technical scheme to realize: malleation bump coal burner; Comprise the combustion chamber of being fixed in burner hearth left side, the combustion chamber by about the power-section and the transition region that distribute form, and the diameter of power-section is greater than transition region; The sidewall of transition region has some broken wind hole; The left end of combustion chamber is provided with mixing chamber tangent with it and that communicate, and the mixing chamber right side is provided with the auxiliary casing that is enclosed within on the sidewall of combustion chamber, and auxiliary casing is provided with the secondary wind cavity that communicates with its left end; It is with holes that secondary wind cavity right side wall has the arcuation wind that communicates with burner hearth, and be provided with the boost tube that is communicated with both between secondary wind cavity and the combustion chamber left side wall.During use, because the diameter of combustion chamber transition region is less than power-section, so wind in the mixing chamber and coal dust be mixed into the power-section of combustion chamber, and power-section fuel combustion pressure is greater than atmospheric pressure, makes coal dust heat up rapidly and burn as early as possible; And the secondary wind in the secondary wind cavity gets into auxiliary casing; The heat energy that discharges with sidewall of combustion chamber carries out heat exchange; Secondary wind after the preheating through broken wind aperture to the transition region that is blown into the combustion chamber; Rotation wind in the power-section of combustion chamber blows to right-hand screw under the promotion of secondary wind, combines to carry out repeatedly high-speed impact with radially secondary wind, has accelerated the burning velocity of coal dust; That wind is crossed in wind is with holes in holes being arranged so that of wind simultaneously; In horizontal boiler, form the wind band of arcuation; The pulverized coal particle of hot mastication carries out the transition to the low-temperature space of burner hearth afterbody under the escorting of wind band; Make it change into solid particle,, overcome existing coal burner and had that coal dust firing is clean, speed reaches problems such as dust stratification, slagging scorification slowly by the soot emissions carried away by air movement.
Reasonable in design of the present invention is reliable, and sufficient combustion is stable, has enlarged the accommodation of coal, has prolonged service life, has reduced the generation of pernicious gas simultaneously, and environmental-protecting performance promotes, and has advantage simple in structure, easy to operate and that cost is low.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure: the 1-combustion chamber, the 2-power-section, the 3-transition region, the broken wind of 4-hole, the 5-mixing chamber, 6-assists casing, 7-secondary wind cavity, 8-wind is with holes, the 9-boost tube.
The specific embodiment
Malleation bump coal burner; Comprise the combustion chamber 1 of being fixed in burner hearth left side, combustion chamber 1 by about the power-section 2 that distributes form with transition region 3, and the diameter of power-section 2 is greater than transition region 3; The sidewall of transition region 3 has some broken wind hole 4; The left end of combustion chamber 1 is provided with mixing chamber 5 tangent with it and that communicate, and mixing chamber 5 right sides are provided with the auxiliary casing 6 that is enclosed within on 1 sidewall of combustion chamber, and auxiliary casing 6 is provided with the secondary wind cavity 7 that communicates with its left end; It is with holes 8 that secondary wind cavity 7 right side walls have the arcuation wind that communicates with burner hearth, and be provided with the boost tube 9 that is communicated with both between secondary wind cavity 7 and combustion chamber 1 left side wall.
Claims (1)
1. a malleation is clashed into coal burner; Comprise the combustion chamber (1) of being fixed in the burner hearth left side; It is characterized in that: combustion chamber (1) by about the power-section (2) and the transition region (3) that distribute form; And the diameter of power-section (2) is greater than transition region (3), and the sidewall of transition region (3) has some broken wind holes (4), and the left end of combustion chamber (1) is provided with mixing chamber (5) tangent with it and that communicate; Mixing chamber (5) right side is provided with the auxiliary casing (6) that is enclosed within on the sidewall of combustion chamber (1); Auxiliary casing (6) is provided with the secondary wind cavity (7) that communicates with its left end, and secondary wind cavity (7) right side wall has the arcuation wind that communicates with burner hearth (8) with holes, and is provided with the boost tube (9) that is communicated with both between secondary wind cavity (7) and combustion chamber (1) left side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101473526A CN102226521B (en) | 2011-06-02 | 2011-06-02 | Positive pressure strike coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101473526A CN102226521B (en) | 2011-06-02 | 2011-06-02 | Positive pressure strike coal burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102226521A CN102226521A (en) | 2011-10-26 |
| CN102226521B true CN102226521B (en) | 2012-11-21 |
Family
ID=44807510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101473526A Expired - Fee Related CN102226521B (en) | 2011-06-02 | 2011-06-02 | Positive pressure strike coal burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102226521B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4523530A (en) * | 1982-02-26 | 1985-06-18 | Sumitomo Metal Industries, Ltd. | Powdery coal burner |
| JP5369899B2 (en) * | 2009-05-27 | 2013-12-18 | 株式会社Ｉｈｉ | Burner |
| CN101725969B (en) * | 2010-01-19 | 2011-08-17 | 中国计量学院 | Low-NOx pulverized coal burner |
| CN202082919U (en) * | 2011-06-02 | 2011-12-21 | 徐衡 | Positive pressure impact pulverized coal burner |
-
2011
- 2011-06-02 CN CN2011101473526A patent/CN102226521B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102226521A (en) | 2011-10-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20130602 |