CN201875702U - Coal burner and boiler - Google Patents
Coal burner and boiler Download PDFInfo
- Publication number
- CN201875702U CN201875702U CN2010205886694U CN201020588669U CN201875702U CN 201875702 U CN201875702 U CN 201875702U CN 2010205886694 U CN2010205886694 U CN 2010205886694U CN 201020588669 U CN201020588669 U CN 201020588669U CN 201875702 U CN201875702 U CN 201875702U
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- China
- Prior art keywords
- combustion chamber
- internal combustion
- coal
- coal burner
- inboard cylinder
- 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.)
- Expired - Lifetime
Links
- 239000003245 coal Substances 0.000 title claims abstract description 70
- 238000002485 combustion reaction Methods 0.000 claims abstract description 118
- 239000002817 coal dust Substances 0.000 claims abstract description 54
- 239000000411 inducer Substances 0.000 claims description 22
- 230000008676 import Effects 0.000 claims description 13
- 230000001133 acceleration Effects 0.000 claims description 11
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 24
- 239000007789 gas Substances 0.000 description 23
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- 239000000843 powder Substances 0.000 description 10
- 238000010304 firing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- -1 NHi (i=0 Chemical compound 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Images
Abstract
The utility model discloses a coal burner that is a double-layer sleeve structure comprising an outside barrel and an inside barrel. The coal burner comprises a heat source and an internal combustion chamber, wherein the inside barrel is used as an internal combustion chamber; the heat source is in the internal combustion chamber; the internal combustion chamber is provided with an inlet and an outlet; the heat source can ignite the coal dust air current passing through the internal combustion chamber and enables the coal dust to be incompletely burnt in the internal combustion chamber; the cavity between the outside barrel and the inside barrel is connected with an air source; the pressure of the air source is larger than the pressure of the coal dust air current; and the wall of the inside barrel is provided with a through hole. The utility model provides a coal burner that solves the technical problems such as coal deposit, slag-bonding and the like on the premise of ensuring the combustion efficiency of coal dust.
Description
Technical field
The utility model relates to a kind of coal-dust combustion device, and particularly a kind of coal burner also relates to a kind of pulverized-coal fired boiler.
Background technology
The application number of the applicant's first to file is 200910175071.4, the utility model name is called in the patent application of " a kind of coal burner and have the boiler of this coal burner ", a kind of coal burner is provided, has please refer to Fig. 1, this figure and illustrate the structure of the coal burner that above-mentioned utility model provides.This coal burner comprises thermal source 200 and internal combustion chamber 100, and internal combustion chamber 100 has import 101 and outlet 102, and internal combustion chamber 100 forms a suitable space, catching fire and burning and created advantage for coal dust.The import 101 of internal combustion chamber 100 communicates with a wind pulverized coal channel, and breeze airflow enters in the internal combustion chamber by wind pulverized coal channel, an import 101.Thermal source 200 stretches into the internal combustion chamber 100 from blast pipe 300, will light by the coal dust that import 101 enters internal combustion chamber 100 constantly.
On the breeze airflow flow direction, described internal combustion chamber 100 has predetermined length, makes coal dust and the AIR MIXTURES therein smooth combustion of excess air coefficient much smaller than 1.The excess air coefficient here is meant, the ratio of required theoretical air requirement when actual air capacity that infeeds internal combustion chamber 100 and completing combustion 1kg coal dust during burning 1kg coal dust.In general, excess air coefficient is preferably between 0.15-0.45, coal burner can be kept smooth combustion in this scope, can realize the coal dust stable ignition simultaneously and form strong reducing atmosphere in internal combustion chamber 100, thereby suppress the generation of nitrogen oxide effectively.
The course of work of the coal burner that this utility model provides is: excess air coefficient is that the breeze airflow of 0.15-0.45 is when the internal combustion chamber 100, thermal source 200 is constantly with coal dust in the breeze airflow, coal dust carries out imperfect combustion in internal combustion chamber 100, and in internal combustion chamber 100, forming suitable hot environment, the high temperature pulverized coal flame that breeze airflow forms is from exporting 102 ejections.In partial combustion process, continuation thermal source 200 and excess air coefficient create a reducing atmosphere much smaller than 1 condition in internal combustion chamber 100.Under this hot environment and reducing atmosphere, the nitrogen element in the coal dust at first is thermal decomposited, and changes into reproducibility intermediate product and nitrogen oxide such as NHi (i=0,1,2), HCN, and the reproducibility intermediate product generates nitrogen with the reaction of nitrogen oxides that has generated.
Breeze airflow is in internal combustion chamber 100 internal combustion, the high temperature pulverized coal flame that forms is sprayed onto in the burner hearth by exporting 102, like this, coal dust catches fire with regard to the high-temperature flue gas that does not rely in the burner hearth, thereby for follow-up the burning away in burner hearth of coal dust provides good catch fire basis and condition, satisfy in the boiler furnace needs of coal dust smooth combustion.
Coal dust carries out in internal combustion chamber 100 in the partial combustion process, and corresponding nitrogen element is converted into nitrogen, thereby can reduce the nitrogen element content in the coal dust that enters burner hearth, the growing amount of fuel NO when the minimizing coal dust burns in burner hearth; Because fuel NO is the chief component of the nitrogen oxide of coal dust firing, thereby can reduce the growing amount of nitrogen oxide in the burner hearth combustion process, reduce the discharge capacity of nitrogen oxide in the boiler running process.And the internal combustion combustion system can effectively reduce the content of fuel gas in the boiler smoke (CO), has improved the efficiency of combustion of coal dust, thereby has taken into account the environmental-protecting performance and the thermal efficiency of boiler.
Above-mentioned coal burner is improving coal dust firing efficient, when having reduced nitrogen oxide emission, because coal dust time of staying in burner increases, also has the problem that is easy to accumulated powder and slagging scorification.
Therefore, how under the prerequisite that guarantees coal dust firing efficient, solving the problem of accumulated powder and slagging scorification, is the current technical barrier that presses for solution.
The utility model content
At above-mentioned technical barrier, the purpose of this utility model is, a kind of coal burner and a kind of boiler are provided, and with under the prerequisite that guarantees coal dust firing efficient, solves problems such as accumulated powder and slagging scorification.
The utility model provides a kind of coal burner, is outer side neck and inboard cylinder double-layer sleeve structure, and described coal burner comprises thermal source and internal combustion chamber;
Described inboard cylinder is as described internal combustion chamber;
Described thermal source is positioned at internal combustion chamber, and described internal combustion chamber has import and outlet; Described thermal source can be lighted the breeze airflow by internal combustion chamber, and makes coal dust carry out imperfect combustion in internal combustion chamber;
Cavity between described outer side neck and the inboard cylinder links to each other with source of the gas, and the pressure of source of the gas is greater than the pressure of described breeze airflow;
The barrel of described inboard cylinder has through hole.
Preferably, described through-hole aperture and quantity are set according to field condition and coal burner.
Preferably, the barrel of described inboard cylinder has most through holes; The center line of described through hole all points to the central axis of inboard cylinder.
Preferably, the barrel of described inboard cylinder has most through holes; The center line of described through hole and the central axis of inboard cylinder are in a certain angle.
Preferably, the barrel of described inboard cylinder has most through holes; The center line of described through hole is positioned at the same plane or the Different Plane of the central axis of vertical inboard cylinder.
Preferably, described internal combustion chamber comprises the deceleration inducer that joins with described chamber front end, the acceleration outlet section that joins with rear end, described combustion chamber;
The sectional area of described deceleration inducer and described acceleration outlet section is all less than the sectional area of combustion chamber.
Preferably, described through hole is positioned at described deceleration inducer, and/or described combustion chamber, and/or described acceleration outlet section.
Preferably, described internal combustion chamber also comprises and quickens the outlet adjustment section that the outlet section rear end joins.
Preferably, described through hole is positioned at described deceleration inducer, and/or described combustion chamber, and/or described acceleration outlet section, and/or section is adjusted in outlet.
The utility model also provides a kind of boiler, comprises previously described any coal burner, and the outlet of described coal burner internal combustion chamber communicates with described burner hearth, the coal dust that catches fire is entered in the burner hearth burn away.
Because the described coal burner of the utility model embodiment is outer side neck and inboard cylinder double-layer sleeve structure, inboard cylinder is as internal combustion chamber; Thermal source can be lighted the breeze airflow by internal combustion chamber, and makes coal dust carry out imperfect combustion in internal combustion chamber.Cavity between described outer side neck and the inboard cylinder links to each other with source of the gas, and the pressure of source of the gas is greater than the pressure of described breeze airflow.Because the existence of above-mentioned pressure differential, make in the cavity between described outer side neck and the inboard cylinder gas under pressure, the through hole of the barrel by described inboard cylinder is injected internal combustion chamber, this air-flow can form near the coal dust the barrel and purge, strengthen the disturbance of barrel zone breeze airflow, make coal dust be difficult for deposition, therefore can solve the problem of accumulated powder in the burner.Simultaneously, airflow flowing can form good cooling to the burner inboard cylinder, reduces burner inboard cylinder wall temperature.In addition, the air that enters from through hole can form oxidizing atmosphere near the inboard cylinder wall, improves the ash fusion point of coal dust.These two conditions all help preventing the slagging scorification in the burner.Therefore, the described coal burner of the utility model embodiment can effectively solve series of technical such as the accumulated powder of burner and slagging scorification.
Description of drawings
The structure chart of the coal burner that Fig. 1 provides for another utility model of the applicant;
The vertical structure figure of the coal burner that Fig. 2 provides for the utility model embodiment one;
The another kind of cross-section structure of the coal burner that Fig. 3 provides for the utility model embodiment one;
Fig. 4 is that E-E shown in Figure 3 is to cutaway view;
Fig. 5 is that F-F shown in Figure 3 is to cutaway view;
The cross-section structure of the coal burner that Fig. 6 provides for the utility model embodiment two;
Fig. 7 is that B-B shown in Figure 6 is to cutaway view;
Fig. 8 is that C-C shown in Figure 6 is to cutaway view;
Fig. 9 is that D-D shown in Figure 6 is to cutaway view.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in detail, the description of this part only is exemplary and explanatory, should any restriction not arranged to protection domain of the present utility model.
Embodiment one
Please refer to Fig. 2, this figure is the vertical structure figure of the coal burner that provides of the utility model embodiment one.
For the convenience of describing, also show blast pipe 300 among Fig. 2; Burning things which may cause a fire disaster 200 extend in the internal combustion chamber 100 from blast pipe 300, and blast pipe 300 communicates with import 101.Described thermal source is the continuation thermal source, with firing coal-dust routinely.
The coal burner that the utility model embodiment one provides is the double-layer sleeve structure of outer side neck 10 and inboard cylinder 100, and described coal burner comprises thermal source 200 and internal combustion chamber.Described inboard cylinder 100 is as described internal combustion chamber.
Described thermal source 200 is positioned at internal combustion chamber, and described internal combustion chamber has import and outlet; Described thermal source can be lighted the breeze airflow by internal combustion chamber, and makes coal dust carry out imperfect combustion in internal combustion chamber.
Cavity between described outer side neck 10 and the inboard cylinder 100 links to each other with source of the gas (not shown among Fig. 2), and the pressure of source of the gas is greater than the pressure of described breeze airflow.
The barrel of described inboard cylinder 100 has through hole 121.Described through hole 121 apertures and quantity are set according to field condition and coal burner.Field condition for example ature of coal, primary air velocity, apart from distance of source of the gas etc.
The barrel of described inboard cylinder 100 can have most through holes 121.The center line of described through hole 121 is positioned at the same plane or the Different Plane of the central axis of vertical inboard cylinder 100.
The operation principle of the coal burner that embodiment one provides is: when breeze airflow enters internal combustion chamber 100 by blast pipe 300 and import 101, burning things which may cause a fire disaster 200 will enter the coal dust of internal combustion chamber 100 constantly and light, make coal dust in internal combustion chamber 100, carry out imperfect combustion, and in internal combustion chamber 100, create strong reducing atmosphere, make the nitrogen element in the coal dust be converted into nitrogen, thereby reduce the growing amount of fuel NO; The burner hearth that enters boiler again through unburnt breeze airflow in coal burner fully burns, after-flame, discharges net quantity of heat; In partial combustion process,, therefore can reduce the formation of nitrogen oxides and the discharge capacity of boiler because the nitrogen element content in the coal dust reduces.
Cavity between described outer side neck 10 of the described coal burner of the utility model embodiment and the inboard cylinder 100 links to each other with source of the gas, and the pressure of source of the gas is greater than the pressure of described breeze airflow.Make the cavity between described outer side neck 10 and the inboard cylinder 100 gas under pressure, the through hole of the barrel by described inboard cylinder 100 is injected internal combustion chamber, this air-flow can form near the coal dust the barrel and purge, strengthen the disturbance of barrel zone breeze airflow, make coal dust be difficult for deposition, therefore can solve the problem of accumulated powder in the burner.Simultaneously, airflow flowing can form good cooling to the burner inboard cylinder, reduces burner inboard cylinder wall temperature.In addition, the air that enters from through hole can form oxidizing atmosphere near the inboard cylinder wall, improves the ash fusion point of coal dust.These two conditions all help preventing the slagging scorification in the burner.Therefore, the described coal burner of the utility model embodiment can solve series of technical such as accumulated powder and slagging scorification.
In order to guarantee the combustion efficiency of coal dust in internal combustion chamber, in the present embodiment, described internal combustion chamber 100 comprises the combustion chamber and first inducer of tubular.
Referring to Fig. 3 to Fig. 5, the another kind of structure chart of the coal burner that Fig. 3 provides for the utility model embodiment one; Fig. 4 is that E-E shown in Figure 3 is to cutaway view; Fig. 5 is that F-F shown in Figure 3 is to cutaway view.
In order to guarantee the combustion efficiency of coal dust in internal combustion chamber, in the present embodiment, described internal combustion chamber 100 comprises the combustion chamber 120 and the inducer 110 of tubular, inducer 110 is taper, and back end cross-sectional area is greater than the sectional area of front end, and the front end of combustion chamber 120 joins by fuel inlet and inducer 110 rear ends; Like this, the sectional area of combustion chamber 120 front ends equals the sectional area of inducer 110 rear ends, and greater than the sectional area of inducer 110 front ends.
Described through hole 121 can only be opened in described deceleration inducer 110, or on the barrel of combustion chamber 120.Described through hole 121 also can be on the barrel of described deceleration inducer 110 and combustion chamber 120.
The coal burner of present embodiment structure is owing to when breeze airflow enters internal combustion chamber 100 by import, at first enter inducer 110, and then enter in the combustion chamber 120 by fuel inlet.Under the situation that the breeze airflow flow remains unchanged, when breeze airflow passed through inducer 110, along with the increase gradually of passage section, the flowing velocity of breeze airflow can reduce gradually.Like this, under the situation that coal burner length remains unchanged, the time of staying in internal combustion chamber 100 of the pulverized coal particle in the breeze airflow will increase.On the one hand, owing to be reducing atmosphere in the internal combustion chamber 100, this just can prolong the time of staying of coal dust under this environment, makes nitrogen element more in the coal dust be converted into nitrogen, reduces the growing amount of nitrogen oxide, strengthens the effect that coal burner reduces nitrogen oxide.On the other hand, breeze airflow speed reduces, for coal dust catch fire and smooth combustion provides advantage, so this burner can effectively reduce the requirement to ature of coal, promptly can available point combustion colm and make it smooth combustion.Further, the efficiency of combustion that this not only also helps improving coal dust also helps and improves the adaptive capacity of coal burner to coal.
The barrel of described combustion chamber 120 has through hole 121.Described through hole 121 apertures and quantity are set according to field condition and coal burner.Field condition for example ature of coal, primary air velocity, apart from distance of source of the gas etc.
The barrel of described inboard cylinder 100 has many through holes 121.The center line of described through hole 121 can be positioned at the same plane of the central axis of vertical inboard cylinder 100.
Referring to Fig. 4, the center line of all through holes 121 all points to the center of described inboard cylinder 100.Because through hole 121 is the gas jets that imported described source of the gas by radially inner side tube 100 centers, can play the effect of stirring inboard cylinder 100 breeze airflows and promoting burning.If particularly the source of the gas of Dao Ruing is the air or oxygen air-flow, can further promote burning.
Referring to Fig. 5, through hole 122 only with the burner importing gas jet that axially forms an angle.The through hole 122 of this structure can alleviate dust stratification slagging scorification phenomenon effectively, and the burning jet is produced minimal disturbances.When through hole 122 only upwards imports air-flow by the bottom, can prevent the sedimentation accumulated powder effectively. Label 200a and 200b all are admission lines of the cavity between outer side neck 10 and the inboard cylinder 100 among Fig. 5.Effect is exactly to be communicated with cavity and source of the gas.
Embodiment three:
Referring to Fig. 6 to Fig. 9, the cross-section structure of the coal burner that Fig. 6 provides for the utility model embodiment two; Fig. 7 is that B-B shown in Figure 6 is to cutaway view; Fig. 8 is that C-C shown in Figure 6 is to cutaway view; Fig. 9 is that D-D shown in Figure 6 is to cutaway view.
The breeze airflow of lighting in internal combustion chamber 100 is drawn by outlet, and when being incorporated into boiler furnace, in order to make the high temperature pulverized coal flame of drawing have higher rigidity, and adapt to the burning tissue needs of boiler furnace integral body, can also in internal combustion chamber 100, establish the acceleration outlet section.As shown in Figure 6, this coal burner also has the acceleration outlet section 130 that joins with 120 rear ends, combustion chamber.
Described through hole 121 can only be opened in described deceleration inducer 110, or combustion chamber 120, or quickens on the barrel of outlet section 130.Described through hole 121 also can and quicken any two sections or all on the barrel of section of outlet section 130 in described deceleration inducer 110 and combustion chamber 120.
Equally, the stability when guaranteeing that the breeze airflow flow velocity changes, preferred on the breeze airflow flow direction, the sectional area that quickens outlet section 130 reduces gradually, so that the flow velocity of breeze airflow increases gradually, and then, improve the stability of coal dust firing in the boiler.This structure can be when increasing the primary air velocity degree, strengthen the turbulence intensity of breeze airflow, help improving the concentration of near axis coal dust in the internal combustion chamber 100, thereby can improve the flammability of colm, improve the conformability of coal burner, can also improve the burn-off rate of coal dust in the boiler.Its sectional area can certainly will speed up outlet section 130 and make the structure that the longitudinal cross-section is the right angle, so long as just can realize increasing once the purpose of distinguished and admirable speed less than the sectional area of combustion chamber 120.
Described through hole 121 can only be opened in described deceleration inducer 110, or combustion chamber 120, or quickens outlet section 130, or outlet is adjusted on the barrel of section 140.Described through hole 121 also can and quicken outlet section 130 and any two sections or any three sections or all on the barrel of section of section 140 is adjusted in outlet at described deceleration inducer 110, combustion chamber 120.
The barrel of described inboard cylinder 100 has most through holes 121.The center line of described through hole 121 can be positioned at the same plane or the Different Plane of the central axis of vertical inboard cylinder 100.
Referring to Fig. 7, the center line of all through holes 121 all points to the center of described inboard cylinder 100.Because through hole 121 is to yearn for the gas jet that inboard cylinder 100 centers import described source of the gas by the footpath, can play the effect of stirring inboard cylinder 100 breeze airflows and promoting burning.If particularly the source of the gas of Dao Ruing is the air or oxygen air-flow, can further promote burning.
As shown in Figure 8, through hole 121 can be the gas jet that is imported by the tangential angle of several section upper edge inner surfaces perpendicular to burner axis.The through hole 121 of this structure can alleviate accumulated powder and slagging scorification phenomenon effectively, simultaneously the burning jet is produced than microvariations.
As shown in Figure 9, through hole 122 only with the burner importing gas jet that axially forms an angle.The through hole 122 of this structure can alleviate dust stratification slagging scorification phenomenon effectively, and the burning jet is produced minimal disturbances.When through hole 122 only upwards imports air-flow by the bottom, can prevent the sedimentation accumulated powder effectively.
200a and 200b all are admission lines of the cavity between outer side neck 10 and the inboard cylinder 100 among Fig. 8 and Fig. 9.Effect is exactly to be communicated with cavity and source of the gas.
Providing on the basis of above-mentioned coal burner, a kind of boiler with this coal burner also is provided, and the internal combustion chamber of above-mentioned coal burner is communicated with the burner hearth of boiler, the coal dust of having lighted is entered in the burner hearth of boiler, and in burner hearth, proceed burning.Described coal burner can be previously described any.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (9)
1. a coal burner is characterized in that, is outer side neck and inboard cylinder double-layer sleeve structure, and described coal burner comprises thermal source and internal combustion chamber;
Described inboard cylinder is as described internal combustion chamber;
Described thermal source is positioned at internal combustion chamber, and described internal combustion chamber has import and outlet; Described thermal source can be lighted the breeze airflow by internal combustion chamber, and makes coal dust carry out imperfect combustion in internal combustion chamber;
Cavity between described outer side neck and the inboard cylinder links to each other with source of the gas, and the pressure of source of the gas is greater than the pressure of described breeze airflow;
The barrel of described inboard cylinder has through hole.
2. coal burner according to claim 1 is characterized in that, the barrel of described inboard cylinder has most through holes; The center line of described through hole all points to the central axis of inboard cylinder.
3. coal burner according to claim 1 is characterized in that, the barrel of described inboard cylinder has most through holes; The center line of described through hole and the central axis of inboard cylinder are to being an angle.
4. coal burner according to claim 1 is characterized in that, the barrel of described inboard cylinder has most through holes; The center line of described through hole is positioned at the same plane or the Different Plane of the central axis of vertical inboard cylinder.
5. according to the arbitrary described coal burner of claim 1 to 4, it is characterized in that described internal combustion chamber comprises the deceleration inducer that joins with described chamber front end, the acceleration outlet section that joins with rear end, described combustion chamber;
The sectional area of described deceleration inducer and described acceleration outlet section is all less than the sectional area of combustion chamber.
6. coal burner according to claim 5 is characterized in that, described through hole is positioned at described deceleration inducer, and/or described combustion chamber, and/or described acceleration outlet section.
7. coal burner according to claim 5 is characterized in that, described internal combustion chamber also comprises and quickens the outlet adjustment section that the outlet section rear end joins.
8. coal burner according to claim 7 is characterized in that, described through hole is positioned at described deceleration inducer, and/or described combustion chamber, and/or described acceleration outlet section, and/or section is adjusted in outlet.
9. a boiler is characterized in that, comprises the arbitrary described coal burner of claim 1 to 8, and the outlet of described coal burner internal combustion chamber communicates with described burner hearth, the coal dust that catches fire is entered in the burner hearth burn away.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205886694U CN201875702U (en) | 2010-11-01 | 2010-11-01 | Coal burner and boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205886694U CN201875702U (en) | 2010-11-01 | 2010-11-01 | Coal burner and boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201875702U true CN201875702U (en) | 2011-06-22 |
Family
ID=44163619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205886694U Expired - Lifetime CN201875702U (en) | 2010-11-01 | 2010-11-01 | Coal burner and boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201875702U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454986A (en) * | 2010-11-01 | 2012-05-16 | 烟台龙源电力技术股份有限公司 | Coal burner and boiler |
| CN103672878A (en) * | 2013-11-30 | 2014-03-26 | 成都科盛石油科技有限公司 | Stable burner tip |
-
2010
- 2010-11-01 CN CN2010205886694U patent/CN201875702U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454986A (en) * | 2010-11-01 | 2012-05-16 | 烟台龙源电力技术股份有限公司 | Coal burner and boiler |
| CN102454986B (en) * | 2010-11-01 | 2014-10-22 | 烟台龙源电力技术股份有限公司 | Coal burner and boiler |
| CN103672878A (en) * | 2013-11-30 | 2014-03-26 | 成都科盛石油科技有限公司 | Stable burner tip |
| CN103672878B (en) * | 2013-11-30 | 2016-01-20 | 成都科盛石油科技有限公司 | Stable type burner tip |
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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: 20110622 Effective date of abandoning: 20141022 |
|
| RGAV | Abandon patent right to avoid regrant |