CN207179640U - A kind of opposed firing boiler of pulverized coal cyclone burner multiaspect arrangement - Google Patents
A kind of opposed firing boiler of pulverized coal cyclone burner multiaspect arrangement Download PDFInfo
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- CN207179640U CN207179640U CN201721071146.0U CN201721071146U CN207179640U CN 207179640 U CN207179640 U CN 207179640U CN 201721071146 U CN201721071146 U CN 201721071146U CN 207179640 U CN207179640 U CN 207179640U
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- opposed firing
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Abstract
The utility model discloses a kind of opposed firing boiler of pulverized coal cyclone burner multiaspect arrangement, belong to coal-powder boiler field, including coal dust opposed firing boiler, if it has dried noodle water-cooled wall, water-cooled wall is even number face, and is equipped with some rotation flow impact burners per face water-cooled wall.The utility model can effectively eliminate water-cooling wall reducing atmosphere, avoid reducing atmosphere from assembling in a certain side wall, reduce the high temperature corrosion of water-cooling wall, and flame degree of filling is more uniform, and coal dust burnout rate is more preferable, and boiler efficiency is higher.
Description
Technical field
The utility model belongs to coal-powder boiler field, more particularly to a kind of coal dust opposed firing boiler.
Background technology
Current existing coal dust opposed firing boiler uses front-back wall (or single wall) opposed firing mode, before coal burner is arranged in
Wall afterwards, and side wall does not have burner.Due to the low-NO_x combustion technology using air classification, burner region excess air coefficient one
As between 0.7~0.85, cause primary zone anoxic to turn into fuel-rich region, overall reducing atmosphere is dense in stove, especially in water cooling
Wall both walls nearby have a large amount of reducing atmospheres, and water-cooling wall both walls are without arrangement burner and ventilation spout, it is impossible to and
When oxidation eliminate both walls reducing atmosphere, easily cause the high temperature corrosion of both walls, while the reproducibility that both walls are dense
Atmosphere can not be completely burned off in the later stage, reduces boiler efficiency.
Utility model content
The purpose of this utility model is：It is proposed a kind of opposed firing boiler of pulverized coal cyclone burner multiaspect arrangement, Neng Gouyou
Effect eliminates water-cooling wall reducing atmosphere, avoids reducing atmosphere from assembling in a certain side wall, reduces the high temperature corrosion of water-cooling wall, and fire
Flame degree of filling is more uniform, and coal dust burnout rate is more preferable, and boiler efficiency is higher.
The purpose of this utility model is realized by following technical proposals：
A kind of opposed firing boiler of pulverized coal cyclone burner multiaspect arrangement, including coal dust opposed firing boiler, if it has dried noodle water
Cold wall wall, water-cooled wall are even number faces, and are equipped with some rotation flow impact burners per face water-cooled wall.
The utility model uses rotation flow impact burner multiaspect arrangement, arranges that coal dust liquidates in every face wall of burner hearth
Burner, every side wall of such boiler have ventilation spout.When all burners all put into operation, it is not present per face wall without ventilation
Situation, even if during a certain coal pulverizer of stoppage in transit, burner still can be passed through cooling wind, namely wall still has ventilating opening to lead to
Wind oxidation eliminates reducing atmosphere, thus reducing atmosphere will not be caused to assemble in a certain side wall, can reduce water-cooling wall
High temperature corrosion, simultaneously because turbulent burner is equipped with per face wall, therefore flame degree of filling is more uniform, coal dust burnout rate is more
Good, boiler efficiency is higher.
Alternatively, the rotation flow impact burner of each face water-cooled wall is divided into two groups of corresponding two mills, and same mill pair
Between the water-cooled wall answered by another mill corresponding to water-cooled wall interval.In the program, the rotation flow impact of coplanar water-cooled wall
Burner corresponds to same mill, and the rotation flow impact burner of different faces each corresponds to a certain mill, the rotation flow impact combustion of two mills
Interlaced arrangement between burner, the rotation flow impact burner ground on the same stage is in symmetrical uniform opposed firing.
As further selection, coal dust opposed firing boiler has 4 face water-cooled walls, square to be arranged symmetrically, a mill pair
Answer the rotation flow impact burner of water-cooling wall front-back wall, the rotation flow impact burner of the corresponding water-cooling wall both walls of another mill.
There are 6 face water-cooled walls, be arranged symmetrically in regular hexagon, often as another further selection, coal dust opposed firing boiler
The rotation flow impact burner of the corresponding 3 face water-cooled walls of platform mill is arranged in " Y types are symmetrical " opposed firing.
There are 8 face water-cooled walls, be arranged symmetrically in octagon, often as another further selection, coal dust opposed firing boiler
The rotation flow impact burner of the corresponding 4 face water-cooled walls of platform mill is arranged in " X-type is symmetrical " opposed firing.
Alternatively, adjacent two rotation flow impact burners on two adjacent surfaces water-cooled wall carry out the cloth that staggers on floor height
Put.In the program, for Coal rank adaptability, because flame length is different, two adjacent burners of corner are in height side
Suitably it is staggeredly arranged upwards.
The foregoing main scheme of the utility model and its each further selection scheme can be with independent assortments to form multiple schemes,
The scheme that can be used and be claimed for the utility model；And the utility model, (each non conflicting selection) selection between and
Can also independent assortment between other selections.Those skilled in the art are after the present invention program is understood according to prior art and public affairs
Know that general knowledge can understand there are multiple combinations, be the claimed technical scheme of the utility model, do not do exhaustion herein.
The beneficial effects of the utility model：This hair utility model uses rotation flow impact burner multiaspect arrangement, respectively
Arrange that burner carries out opposed firing on each water-cooling wall, the high temperature corrosion of water-cooling wall can be slowed down, while can strengthen
The burning of coal dust, improve boiler efficiency.
Brief description of the drawings
Fig. 1 is the plane arrangement structure schematic diagram of the utility model embodiment 1；
Fig. 2 is the plane arrangement structure schematic diagram of the utility model embodiment 2；
Fig. 3 is the plane arrangement structure schematic diagram of the utility model embodiment 2；
In figure, 1 is water-cooled wall, and 2 be rotation flow impact burner.
Embodiment
The utility model is further described with reference to specific embodiments and the drawings, the burner hearth that accompanying drawing is shown is per face
The burner number of wall be 2 be only for example, be not limited to every face burner number, be not limited to the number of plies, as shown in Figure 1, Figure 2 with Fig. 3 institutes
Show, sequence number A1~A16 is rotation flow impact burner.
Embodiment 1：
As shown in figure 1, for 350MW grade supercritical face-fired boilers, the turbulent burner corner of accompanying drawing 1 can be used
Arrangement.Wherein coal dust opposed firing boiler has 4 face water-cooled walls 1, and is equipped with 2 rotation flow impact burners per face water-cooled wall 1
2.Corresponding 1 mill of wherein burner A1/A2/A5/A6 (with conventional, 4 burners of every mill connection), burner A3/A4/
Corresponding 1 mill of A7/A8, if a certain mill (stoppage in transit of A1/A2/A5/A6 burners) of stopping transport, then before A3/A4/A7/A8 becomes
Wall opposed firing afterwards, now A1/A2/A5/A6 still can be passed through cooling wind, avoid this face wall from thering is dense reducing atmosphere to gather
Collection, that is, the wall exist spout can divulge information solve reducing atmosphere rendezvous problem.
As illustrated, contrasting conventional opposed firing burner, furnace flame degree of filling is more uniform, and coal dust burnout rate is more
Good, because every face wall has burner ventilation spout, even if stopping transport a certain layer coal pulverizer, corresponding burner can divulge information and keep away
Exempt from the face wall and assemble dense reducing atmosphere.For different coals, turbulent burner flame is different in size, therefore each angle
Falling two adjacent burners can be staggeredly arranged on floor height, avoid flame from colliding.
Embodiment 2：
As shown in Fig. 2 for 600MW grade supercritical face-fired boilers, the turbulent burner hexagonal of accompanying drawing 2 can be used
Arrangement.Wherein coal dust opposed firing boiler has 6 face water-cooled walls 1, and is equipped with 2 rotation flow impact burners per face water-cooled wall 1
2.Corresponding 1 mill of wherein burner A1/A2/A5/A6/A9/A10 (with conventional, 6 burners of every mill connection), burning
Corresponding 1 mill of device A3/A4/A7/A8/A11/A12, if stopping transport, (A1/A2/A5/A6/A9/A10 burners stop a certain mill
Fortune), then A3/A4/A7/A8/A11/A12 is in " Y types are symmetrical " opposed firing, and now A1/A2/A5/A6/A9/A10 still can lead to
Enter to cool down wind, avoid this face wall from having dense reducing atmosphere aggregation.
As illustrated, contrasting conventional opposed firing burner, furnace flame degree of filling is more uniform, and coal dust burnout rate is more
Good, because every face wall has burner ventilation spout, even if stopping transport a certain layer coal pulverizer, corresponding burner can divulge information and keep away
Exempt from the face wall and assemble dense reducing atmosphere.For different coals, turbulent burner flame is different in size, therefore each angle
Falling two adjacent burners can be staggeredly arranged on floor height, avoid flame from colliding.
Embodiment 3：
As shown in figure 3, for 1000MW grade supercritical face-fired boilers, the turbulent burner eight of accompanying drawing 3 can be used
Angle is arranged.Wherein coal dust opposed firing boiler has 8 face water-cooled walls 1, and 2 rotation flow impact burnings are equipped with per face water-cooled wall 1
Device 2.Corresponding 1 mill of wherein burner A1/A2/A5/A6/A9/A10/A13/A14 (with conventional, 8 combustions of every mill connection
Burner), corresponding 1 mill of burner A3/A4/A7/A8/A11/A12/A15/A16, if a certain mill (A1/A2/A5/ that stop transport
A6/A9/A10/A13/A14 burners are stopped transport), then A3/A4/A7/A8/A11/A12/A15/A16 liquidates combustion in " X-type is symmetrical "
Burn, now A1/A2/A5/A6/A9/A10/A13/A14 still can be passed through cooling wind, avoid this face wall from having dense reproducibility
Atmosphere is assembled.
As illustrated, contrasting conventional opposed firing burner, furnace flame degree of filling is more uniform, and coal dust burnout rate is more
Good, because every face wall has burner ventilation spout, even if stopping transport a certain layer coal pulverizer, corresponding burner can divulge information and keep away
Exempt from the face wall and assemble dense reducing atmosphere.For different coals, turbulent burner flame is different in size, therefore each angle
Falling two adjacent burners can be staggeredly arranged on floor height, avoid flame from colliding.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (6)
1. a kind of opposed firing boiler of pulverized coal cyclone burner multiaspect arrangement, including coal dust opposed firing boiler, if it has dried noodle water cooling
Wall wall, it is characterised in that：Water-cooled wall is even number face, and is equipped with some rotation flow impact burners per face water-cooled wall.
2. the opposed firing boiler of pulverized coal cyclone burner multiaspect arrangement as claimed in claim 1, it is characterised in that：Each face water-cooling wall
The rotation flow impact burner of wall is divided into two groups of corresponding two mills, and by another mill pair between water-cooled wall corresponding to same mill
The water-cooled wall interval answered.
3. the opposed firing boiler of pulverized coal cyclone burner multiaspect arrangement as claimed in claim 2, it is characterised in that：Coal dust liquidates pot
Stove has 4 face water-cooled walls, square to be arranged symmetrically, the rotation flow impact burner of the corresponding water-cooling wall front-back wall of a mill, separately
The rotation flow impact burner of the corresponding water-cooling wall both walls of one mill.
4. the opposed firing boiler of pulverized coal cyclone burner multiaspect arrangement as claimed in claim 2, it is characterised in that：Coal dust liquidates pot
Stove has 6 face water-cooled walls, is arranged symmetrically in regular hexagon, and the rotation flow impact burner of the corresponding 3 face water-cooled walls of every mill is in
" Y types are symmetrical " opposed firing is arranged.
5. the opposed firing boiler of pulverized coal cyclone burner multiaspect arrangement as claimed in claim 2, it is characterised in that：Coal dust liquidates pot
Stove has 8 face water-cooled walls, is arranged symmetrically in octagon, and the rotation flow impact burner of the corresponding 4 face water-cooled walls of every mill is in
" X-type is symmetrical " opposed firing is arranged.
6. the opposed firing boiler of pulverized coal cyclone burner multiaspect arrangement as claimed in claim 1, it is characterised in that：Two adjacent surfaces water
Adjacent two rotation flow impact burners on cold wall wall are staggeredly arranged on floor height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721071146.0U CN207179640U (en) | 2017-08-25 | 2017-08-25 | A kind of opposed firing boiler of pulverized coal cyclone burner multiaspect arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721071146.0U CN207179640U (en) | 2017-08-25 | 2017-08-25 | A kind of opposed firing boiler of pulverized coal cyclone burner multiaspect arrangement |
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| Publication Number | Publication Date |
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| CN207179640U true CN207179640U (en) | 2018-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721071146.0U Active CN207179640U (en) | 2017-08-25 | 2017-08-25 | A kind of opposed firing boiler of pulverized coal cyclone burner multiaspect arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902149A (en) * | 2021-02-07 | 2021-06-04 | 哈尔滨工业大学 | Combustion system with pre-combustion chamber burners arranged on walls on two sides of boiler and combustion method |
-
2017
- 2017-08-25 CN CN201721071146.0U patent/CN207179640U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902149A (en) * | 2021-02-07 | 2021-06-04 | 哈尔滨工业大学 | Combustion system with pre-combustion chamber burners arranged on walls on two sides of boiler and combustion method |
| CN112902149B (en) * | 2021-02-07 | 2022-02-22 | 哈尔滨工业大学 | Combustion method of combustor with precombustion chambers arranged on two side walls of boiler |
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