CN209622767U - Heating in medium frequency steady-burning coal power combustor - Google Patents
Heating in medium frequency steady-burning coal power combustor Download PDFInfo
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- CN209622767U CN209622767U CN201920203311.6U CN201920203311U CN209622767U CN 209622767 U CN209622767 U CN 209622767U CN 201920203311 U CN201920203311 U CN 201920203311U CN 209622767 U CN209622767 U CN 209622767U
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- coal dust
- coal
- demarcation plate
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Abstract
The utility model belongs to technical field of burner, specifically a kind of heating in medium frequency steady-burning coal power combustor.Solve the problems such as coal burner load cannot drop too low, including coal burner shell, nonmetallic coal dust demarcation plate, metal coal dust demarcation plate, medium-frequency heating coil, two three-level coal dust demarcation plates, secondary air box and Secondary Air cyclone, First air entrance is arranged in coal burner shell upstream position, coal burner housing central section swims over to downstream from above and sets gradually nonmetallic coal dust demarcation plate and second level three-level coal dust demarcation plate, metal coal dust demarcation plate is set on the inside of nonmetallic coal dust demarcation plate, it is medium-frequency heating coil between nonmetallic coal dust demarcation plate and metal coal dust demarcation plate, medium-frequency heating coil is connect with binding post, secondary air box is arranged in coal burner hull outside downstream position, Secondary Air entrance is provided in secondary air box, secondary air box outlet setting Secondary Air cyclone.Increase the Stability and adaptability of coal burner.
Description
Technical field
The utility model belongs to technical field of burner, specifically a kind of heating in medium frequency steady-burning coal power combustor.
Background technique
The prior art is if it is desired to improve the stability of coal burner, generally use increase igniter or put into auxiliary
The method of fuel is realized.The coal burner for being such as equipped with plasma ignition device can be improved combustion stability, but because etc.
The cathode material service life of ion ignition device is very short, can not use for a long time.Such as it is equipped with the coal dust of Tiny-oil ignition device
Burner can also be improved combustion stability, but fuel consumption is big, operating cost is high；And in torch oil gun in use,
Diesel combustion is incomplete, boiler tail flue gas cleaning equipment cannot come into operation, and is unable to reach existing environmental protection standard.
Utility model content
The utility model cannot drop too low to solve existing coal burner load, low calorific value coal etc. cannot be used to ask
Topic provides a kind of heating in medium frequency steady-burning coal power combustor and application method.
The utility model takes following technical scheme: a kind of heating in medium frequency steady-burning coal power combustor, including coal burner
Shell, nonmetallic coal dust demarcation plate, metal coal dust demarcation plate, medium-frequency heating coil, two three-level coal dust demarcation plates, secondary air box and
First air entrance is arranged in Secondary Air cyclone, coal burner shell upstream position, and coal burner housing central section is swum over to from above
Downstream sets gradually nonmetallic coal dust demarcation plate and two three-level coal dust demarcation plates, and metal coal is arranged on the inside of nonmetallic coal dust demarcation plate
Powder demarcation plate, between nonmetallic coal dust demarcation plate and metal coal dust demarcation plate be medium-frequency heating coil, medium-frequency heating coil with connect
Secondary air box is arranged in terminal connection, coal burner hull outside downstream position, is provided with Secondary Air entrance in secondary air box, and two
Secondary bellows outlet setting Secondary Air cyclone.
Further, coal burner housing inner diameter D, metal coal dust demarcation plate internal diameter D1=0.18D ~ 0.35D；Metal coal
Powder demarcation plate length L1=4.8D1 ~ 5.7D1；Nonmetallic coal dust demarcation plate internal diameter D2=0.23D ~ 0.44D, two three-level coal dusts separate
Plate internal diameter D3=0.5D ~ 0.64D.
Further, the material of nonmetallic coal dust demarcation plate can be ceramics, silicon carbide or silicon nitride.
Further, the material of insulation and thermal insulation material can be alumina silicate fibre or rock wool.
A kind of application method of heating in medium frequency steady-burning coal power combustor, when coal burner works, first to heating in medium frequency line
Circle is powered, and metal coal dust demarcation plate is heated to 700 DEG C to 900 DEG C, then passes to First air and coal dust.Level-one coal dust is passing through
It is ignited when hot metal coal dust demarcation plate, forms stable incendiary source；Later two three-level coal dusts burner rear portion gradually
The ignition flame formed with a breeze airflow mixes, and forms stable burner flame, level-one coal dust account for coal dust total amount 5% ~
20%, second level coal dust accounts for the 20% ~ 40% of coal dust total amount.
Compared with prior art, after the utility model increases frequency heating device, part coal dust is made to be heated, be gasified,
Stable incendiary source can be formed as oil gun, so that the stability of coal burner running on the lower load be significantly greatly increased and to coal
The adaptability of matter.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is level-one second level coal dust partition plate structure schematic diagram；
1, coal burner shell, 2, First air entrance, 3, nonmetallic coal dust demarcation plate, 4, metal coal dust demarcation plate, 5,
Medium-frequency heating coil, 6, binding post, 7, two three-level coal dust demarcation plates, 8, secondary air box, 9, Secondary Air entrance, 10, Secondary Air rotation
Flow device, 11, insulation and thermal insulation material.
Specific embodiment
To achieve the above object, the utility model provides following scheme: a kind of heating in medium frequency steady-burning coal power combustor, packet
Include 1, coal burner shell, 2, First air entrance, 3, nonmetallic coal dust demarcation plate, 4, metal coal dust demarcation plate, 5, intermediate frequency adds
Heat coil, 6, binding post, 7, two three-level coal dust demarcation plates, 8, secondary air box, 9, Secondary Air entrance, 10, Secondary Air cyclone.
The middle part of coal burner shell 1, sets gradually level-one second level coal dust demarcation plate and two three-level coal dust demarcation plates 7, and one
For grade second level coal dust demarcation plate in upstream, centre, whole coal dusts are divided into level-one coal in downstream, periphery by two three-level coal dust demarcation plates 7
Powder, second level coal dust and three-level coal dust.Level-one second level coal dust demarcation plate includes nonmetallic coal dust demarcation plate 3 and metal coal dust demarcation plate
4, only metal coal dust demarcation plate 4 can be heated, and nonmetallic coal dust demarcation plate 3 will not be heated.Nonmetallic coal dust demarcation plate 3
Material can be ceramics, silicon carbide or silicon nitride.In being arranged among nonmetallic coal dust demarcation plate 3 and metal coal dust demarcation plate 4
Frequency heating coil 5；Medium-frequency heating coil 5 will heat metal coal dust demarcation plate 4 when being powered.In nonmetallic 3 He of coal dust demarcation plate
Among metal coal dust demarcation plate 4, insulation and thermal insulation material 11 is filled around medium-frequency heating coil 5.The material of insulation and thermal insulation material 11
Matter can be alumina silicate fibre or rock wool.Level-one coal dust passes through among metal coal dust demarcation plate 4, and second level, three-level coal dust are firing
Burner rear portion is gradually mixed with a breeze airflow.
Burner critical size should meet following relationship (coal burner housing inner diameter D): 4 internal diameter of metal coal dust demarcation plate
D1=0.18D~0.35D；4 length L1=4.8D1 of metal coal dust demarcation plate ~ 5.7D1.Nonmetallic 3 internal diameter D2 of coal dust demarcation plate=
0.23D~0.44D.Two three-level coal dust demarcation plates, 7 internal diameter D3=0.5D ~ 0.64D.The setting of coal dust demarcation plate can make whole coals
Powder fuel is gradually ignited and participates in burning, and improves the stability of burner；Pass through 4 internal diameter of reasonable set metal coal dust demarcation plate
D1, two three-level coal dust demarcation plates, 7 internal diameter D3 realize that level-one coal dust accounts for coal dust total amount 5% ~ 20%, second level coal dust accounts for coal dust total amount 20%
~ 40% allocation proportion.Level-one coal dust stablizes burning, is the most critical factor for influencing combustor stability；Metal coal dust separates
The reasonable setting of 4 length L1 of plate, 3 internal diameter D2 of nonmetallic coal dust demarcation plate provide the space for stablizing burning for level-one coal dust.
Secondary air box 8 is set outside coal burner shell 1, and setting Secondary Air cyclone 10 in the outlet of secondary air box 8 makes two
Secondary wind rotates and is sufficiently mixed, burns with pulverized coal flame.
When coal burner works, first it is powered to medium-frequency heating coil 5, metal coal dust demarcation plate 4 is heated to 700 DEG C extremely
900 DEG C, then pass to First air and coal dust.Level-one coal dust is formed steady by being ignited when hot metal coal dust demarcation plate 4
Fixed incendiary source；Second level, three-level coal dust are mixed in the ignition flame that burner rear portion is gradually formed with a breeze airflow later,
Form stable burner flame.
Whole Pulverized Coals are divided into three-level and participate in burning；Level-one coal dust accounts for the 5% ~ 20% of coal dust total amount, and second level coal dust accounts for coal
The 20% ~ 40% of powder total amount.
Claims (4)
1. a kind of heating in medium frequency steady-burning coal power combustor, it is characterised in that: including coal burner shell (1), nonmetallic coal dust
Demarcation plate (3), metal coal dust demarcation plate (4), medium-frequency heating coil (5), two three-level coal dust demarcation plates (7), secondary air box (8) and
First air entrance (2) are arranged in Secondary Air cyclone (10), coal burner shell (1) upstream position, coal burner shell (1)
Middle part swims over to downstream from above and sets gradually nonmetallic coal dust demarcation plate (3) and two three-level coal dust demarcation plates (7), nonmetallic coal dust point
Metal coal dust demarcation plate (4) are set on the inside of partition (3), are between nonmetallic coal dust demarcation plate (3) and metal coal dust demarcation plate (4)
Medium-frequency heating coil (5) fills insulation and thermal insulation material (11) around medium-frequency heating coil (5), medium-frequency heating coil (5) with connect
Secondary air box (8) are arranged in terminal (6) connection, coal burner shell (1) downstream outside position, and secondary air box is provided on (8)
Secondary Air entrance (9), secondary air box (8) outlet setting Secondary Air cyclone (10).
2. heating in medium frequency steady-burning coal power combustor according to claim 1, it is characterised in that: coal burner housing inner diameter
D, metal coal dust demarcation plate (4) internal diameter D1=0.18D ~ 0.35D；Metal coal dust demarcation plate (4) length L1=4.8D1 ~ 5.7D1；It is non-
Metal coal dust demarcation plate (3) internal diameter D2=0.23D ~ 0.44D, two three-level coal dust demarcation plate (7) internal diameter D3=0.5D ~ 0.64D.
3. heating in medium frequency steady-burning coal power combustor according to claim 2, it is characterised in that: nonmetallic coal dust demarcation plate
(3) material is ceramics, silicon carbide or silicon nitride.
4. heating in medium frequency steady-burning coal power combustor according to claim 3, it is characterised in that: insulation and thermal insulation material (11)
Material is alumina silicate fibre or rock wool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920203311.6U CN209622767U (en) | 2019-02-17 | 2019-02-17 | Heating in medium frequency steady-burning coal power combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920203311.6U CN209622767U (en) | 2019-02-17 | 2019-02-17 | Heating in medium frequency steady-burning coal power combustor |
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| Publication Number | Publication Date |
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| CN209622767U true CN209622767U (en) | 2019-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751596A (en) * | 2019-02-17 | 2019-05-14 | 山西瓦特网联环能科技有限公司 | Heating in medium frequency steady-burning coal power combustor and application method |
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2019
- 2019-02-17 CN CN201920203311.6U patent/CN209622767U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751596A (en) * | 2019-02-17 | 2019-05-14 | 山西瓦特网联环能科技有限公司 | Heating in medium frequency steady-burning coal power combustor and application method |
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| CP02 | Change in the address of a patent holder |
Address after: No.602, Zone C, 6 / F, block B, Cyberport, 402 nanzhonghuan street, Taiyuan Xuefu Park, Shanxi comprehensive reform demonstration zone, Taiyuan City, Shanxi Province Patentee after: SHANXI WATE WANGLIAN HUANNENG TECHNOLOGY Co.,Ltd. Address before: Room 1703, Sunshine City Global Financial Center, No. 8 Changxing South Street, Jinyuan District, Taiyuan City, Shanxi Province, 030021 Patentee before: SHANXI WATE WANGLIAN HUANNENG TECHNOLOGY Co.,Ltd. |