CN203549861U - Dry slag removal system of thermal power plant - Google Patents
Dry slag removal system of thermal power plant Download PDFInfo
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- CN203549861U CN203549861U CN201320529522.1U CN201320529522U CN203549861U CN 203549861 U CN203549861 U CN 203549861U CN 201320529522 U CN201320529522 U CN 201320529522U CN 203549861 U CN203549861 U CN 203549861U
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- Prior art keywords
- slag
- dry
- dry slag
- power plant
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- 239000002893 slag Substances 0.000 title claims abstract description 110
- 239000000428 dust Substances 0.000 claims abstract description 24
- 150000001875 compounds Chemical class 0.000 claims description 13
- 239000010882 bottom ash Substances 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 7
- 239000010959 steel Substances 0.000 abstract description 7
- 239000002131 composite material Substances 0.000 abstract 3
- 239000002956 ash Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
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- Gasification And Melting Of Waste (AREA)
Abstract
The utility model discloses a dry slag removal system of a thermal power plant. The dry slag removal system of the thermal power plant comprises a slag cabin, wherein the slag cabin is composed of a storage section at the upper part and a conical pipe section at the lower part; the top part of the storage section of the slag cabin is communicated with a head part of a dry slag conveyor; an ash discharge device is arranged on the lower part of the conical pipe section of the slag cabin; a conveying channel is arranged below the ash discharge device; a dust removal device is arranged in the dry slag removal system; the dust removal device comprises annular composite profiled steel sheets arranged at the four sides of the slag cabin and the conveying channel; a suspended hood is arranged in each annular composite profiled steel sheet; main blast pipes are arranged on the outer walls of the annular composite profiled steel sheets; the air outlets of the suspended hoods are communicated with the lower parts of the main blast pipes. Dust-containing air at the lower part of the slag cabin is sucked into a dry slag machine by utilizing a negative pressure of a boiler, and the total air inflow in the boiler is controlled by utilizing an electrical adjusting air door, so that the dry slag removal system of the thermal power plant solves the dust pollution problem in the slag cabin area without affecting the normal operation of the boiler.
Description
Technical field
The utility model relates to the slag removing system of the industries such as a kind of thermoelectricity, building materials, iron and steel, chemical industry, relates in particular to the thermal power plant dry bottom ash handling system in slag removing system.
Background technology
In current big-and-middle-sized thermal power plant, the dry bottom ash handling systems that adopt are processed the end slag of coal-burning boiler more, the course of work of dry bottom ash handling system is that the hot slag that boiler is discharged is fallen on the conveyer belt of dry type conveyer after slag-removing hopper, precrushing hydraulic shutoff door, and moves with the conveyer belt of slow movement.Two side, head and the afterbody of dry type conveyer are respectively equipped with several air inlets, utilize the swabbing action of combustion chamber draft, suck on the spot cold air, utilizing cold air to assist part on conveyer belt to fail the combustible of completing combustion further burns, and absorb the high temperature heat content in slag, by cooling of furnace slag, be the middle temperature lime-ash of 100～200 ℃; Cold air with the heat exchange of slag in, self temperature will rise to 300～400 ℃, then enter boiler; In order not affect boiler efficiency, the cooling air volume that enters dry slag conveyer must be less than or equal to 1% of boiler combustion air quantity.The slag getting off that is cooled, enters crusher in crushing by tape transport, slag storehouse or directly fall into slag storage and deposit in the middle of the slag after fragmentation finally enters.
Bottom, slag storehouse is provided with discharging facility, for the slag in slag storehouse is offloaded in transport vehicle.Conventional discharging is set to biaxial rneader and dry slag bulk machine, and dry slag bulk machine by the dry slag entrucking in slag storehouse, is transported to appointed place for directly; Because solid impurity particle is discharged into after dry ash tank car and is difficult to thoroughly unstow by dry slag bulk machine greatly, therefore less use.Biaxial rneader can add material water and stir that to make moisture content be entrucking after 15～20% wet ash (slag), is transported to appointed place; But while adopting biaxial rneader to carry out discharging, have the inharmonic problem of pulp water ratio, when pulp water ratio is unreasonable, slag dumping process often produces a large amount of dusts surrounding environment is polluted.Because the market demand of dry slag is larger, when with biaxial rneader discharging, select pulp water ratio often less, the phenomenon that therefore dust is confusingly raised in discharge process is more obvious, and it is abnormal severe that site environment also can become.
Utility model content
The utility model technical issues that need to address are to provide a kind of thermal power plant dry bottom ash handling system that can solve region, slag storehouse contamination by dust problem.
For addressing the above problem, technical solution adopted in the utility model is:
A kind of thermal power plant dry bottom ash handling system, comprise slag storehouse, described slag storehouse by be communicated with setting for storing the top memory section of dry slag and forming for the bottom Taper Pipe section that unloads dry slag, the top of slag storehouse memory paragraph is communicated with the dry slag conveyor head for delivery of dry slag, grey equipment is unloaded in the Taper Pipe pars infrasegmentalis setting of slag storehouse, unloads grey equipment below and is provided with transport channel; In described dry slag slag removing system, be provided with dust arrester, described dust arrester comprise be arranged on top, slag storehouse and transport channel surrounding annular compound profiled sheet, in annular compound profiled sheet, be provided with the first suspended hood, wherein the first suspended hood is arranged on to install and unloads in the running layer of grey equipment, and the both sides of transport channel are also provided with the second suspended hood; On the outer wall of described annular compound profiled sheet, be also provided with blast main vertically upward, that top is communicated with dry slag conveyor head, the air outlet of described suspended hood is connected with the bottom of blast main.
Improvement of the present utility model is: the blast main that is arranged in dry slag conveyor head is provided with for controlling blast main carries the electric adjustable air doors of the cold gas scale of construction to dry slag conveyer.
Further improvement of the utility model is: described blast main is set to two covers, be symmetricly set on the inwall of annular compound profiled sheet, wherein the bottom of a blast main is communicated with the first suspended hood air outlet, and the bottom of another root blast main is communicated with the second suspended hood air outlet.
The beneficial effect that adopts technique scheme to produce is:
The utility model utilizes boiler negative pressure that the dust laden air of bottom, slag storehouse is sucked to slag drying machine, and total air inflow of utilizing electric adjustable air doors control to enter boiler, not affecting under the prerequisite of the normal operation of boiler, has solved region, slag storehouse contamination by dust problem.This Novel operating is convenient, simple in structure, can improve working environment, realizes power plant and carries out production strictly in line with rules and regulations.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is top view of the present utility model;
Wherein: 1, slag storehouse, 2, boiler, 3, dry slag conveyer, 4, side air inlet mouth, 5, the first suspended hood, 6, the second suspended hood, 7, blast main, 8, electric adjustable air doors, 9, annular compound profiled sheet.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
A kind of thermal power plant dry bottom ash handling system, its structure as depicted in figs. 1 and 2, comprise slag storehouse 1, boiler 2 and dry slag conveyer 3, wherein slag storehouse 1 comprise be communicated with arrange for storing the top memory section of dry slag and for unloading the bottom Taper Pipe section of dry slag, the top of slag storehouse memory paragraph is communicated with dry slag conveyer 3 heads for delivery of dry slag, the bottom of slag storehouse Taper Pipe section is provided with unloads grey equipment, unloads grey equipment below and is provided with transport channel.Dry slag conveyer 3 heads, afterbody and both sides all arrange air inlet, and dry slag conveyer 3 tail ends and boiler 2 are tightly connected, and dry slag conveyer 3 head ends are connected with slag storehouse 1 end sealing.
In dry slag slag removing system, be provided with dust arrester, described dust arrester comprises annular compound profiled sheet 9, suspended hood and blast main 7.
Annular compound profiled sheet is arranged on the surrounding of slag storehouse and transport channel, and surrounds slag storehouse, unloads grey equipment and transport channel, and transport channel only reserves driving passage, makes the surrounding formation enclosure space of slag storehouse and transport channel, prevents that dry slag dust from flying upward.
Suspended hood arranges two covers altogether, and the first suspended hood 5 is positioned at annular compound profiled sheet 9, is arranged on to install to unload in the running layer of grey equipment, for absorbing, unloads the dust that grey process produces; The second suspended hood 6 is arranged on the two side of transport channel, the dust producing while falling on transport vehicle for absorbing dry slag.When the height of the second suspended hood should be with entrucking, ash leakage place is highly consistent, the second suspended hood outlet is pooled to blast main 7, blast main 7 is up to top, slag storehouse and the connection of dry slag conveyor head along slag storehouse sidewall, the dust laden air producing during slag dumping so just enters dry slag conveyer under the effect of combustion chamber draft, be used as the cooling-air of warm sludge, remove the ash air of bottom, slag storehouse simultaneously, guaranteed the hygiene of 1 bottom, slag storehouse.
Blast main 7 is set to two covers, is symmetricly set on the inwall of annular compound profiled sheet 9, and wherein the bottom of a blast main is communicated with the air outlet of the first suspended hood 5, and the bottom of another root blast main is communicated with the air outlet of the second suspended hood 6; The top of blast main is communicated with dry slag conveyer 3 heads.The position that is positioned at dry slag conveyer 3 heads in every blast main all arranges an electric adjustable air doors 8, for controlling blast main to the cold gas scale of construction of carrying in dry slag conveyer.
What carry due to dry slag conveyer is boiler bottom slag, and dry slag conveyer inside is full of flying dust, so suck dust laden air and suck clean air, on cooling effect, is the identical operation that does not affect steel band machine.Although to entering the not requirement of cooling-air quality of steel band machine, in order not affect boiler efficiency, to enter steel band machine must be controlled at≤boiler combustion of cooling-air total amount air quantity 1%.Therefore can control the intake that dry slag conveyer chain-drive section air inlet is included in by the electric adjustable air doors 8 being arranged in blast main.
During actual motion, for guaranteeing that this device farthest plays a role, electric adjustable air doors can be adjusted to aperture maximum to suck the dust laden air of maximum, can close if desired dry slag and carry both sides air inlet and afterbody air inlet to control total air inflow.
This device can have two kinds of methods of operation when practical application: first kind of way: boiler is at full capacity or while approaching oepration at full load, at this moment the required burning air quantity of boiler combustion maximum, cooling air volume also increases thereupon, (for a 350MW generating set, cooling air quantity is 7000-12000m in scope roughly
3/ h), now the electric adjustable air doors in this device can be made as to normally open, to process at any time the dust laden air producing when ash is unloaded in bottom, slag storehouse.The second way: when boiler at low load moves, the control of electric adjustable air doors include in unload grey facility control program (because slag storehouse bottom air pollute many when unloading grey equipment and unload ash ash emit and cause outward) in, that is: when unloading grey equipment and bring into operation, electric adjustable air doors is opened, and dust laden air is inhaled into dry slag and carries; While unloading grey equipment downtime, electric adjustable air doors time-delay closing, specifically delay time can be determined according to practical operation situation, its fundamental basis is exactly the dust laden air of thoroughly clearing up slag storehouse bottom space, keeps clean environment.
Claims (3)
1. a thermal power plant dry bottom ash handling system, comprise slag storehouse, described slag storehouse (1) by be communicated with arrange for storing the top memory section of dry slag and forming for the bottom Taper Pipe section that unloads dry slag, the top of slag storehouse memory paragraph is communicated with dry slag conveyer (3) head for delivery of dry slag, the bottom of slag storehouse Taper Pipe section is provided with unloads grey equipment, unloads grey equipment below and is provided with transport channel; It is characterized in that: in described dry slag slag removing system, be provided with dust arrester, described dust arrester comprise be arranged on slag storehouse and transport channel surrounding annular compound profiled sheet (9), in annular compound profiled sheet (9), be provided with the first suspended hood (5), wherein the first suspended hood is arranged on to install and unloads in the running layer of grey equipment, is also provided with the second suspended hood (6) on the two side of transport channel; On the outer wall of described annular compound profiled sheet (9), be also provided with blast main (7) vertically upward, that top is communicated with dry slag conveyer (3) head, the air outlet of described suspended hood is connected with the bottom of blast main.
2. thermal power plant according to claim 1 dry bottom ash handling system, is characterized in that: the blast main that is arranged in dry slag conveyer (3) head is provided with electric adjustable air doors (8) from blast main to dry slag conveyer that carry the cold gas scale of construction for controlling.
3. thermal power plant according to claim 2 dry bottom ash handling system, it is characterized in that: described blast main (7) is set to two covers, be symmetricly set on the inwall of annular compound profiled sheet (9), wherein the bottom of a blast main is communicated with the first suspended hood (5) air outlet, and the bottom of another root blast main is communicated with the second suspended hood (6) air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320529522.1U CN203549861U (en) | 2013-08-28 | 2013-08-28 | Dry slag removal system of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320529522.1U CN203549861U (en) | 2013-08-28 | 2013-08-28 | Dry slag removal system of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203549861U true CN203549861U (en) | 2014-04-16 |
Family
ID=50467971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320529522.1U Expired - Lifetime CN203549861U (en) | 2013-08-28 | 2013-08-28 | Dry slag removal system of thermal power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203549861U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036111A (en) * | 2017-06-03 | 2017-08-11 | 青岛达能环保设备股份有限公司 | Coal-burning boiler top suction type is comprehensive from dust suppression and recovery system |
| CN107062280A (en) * | 2017-06-03 | 2017-08-18 | 青岛达能环保设备股份有限公司 | Coal-burning boiler side-suction type is comprehensive from dust suppression and recovery system |
| CN111136082A (en) * | 2020-03-05 | 2020-05-12 | 靖江华和环保设备制造有限公司 | A double-pipe negative pressure dust collector |
| WO2025156512A1 (en) * | 2024-01-22 | 2025-07-31 | 华能莱芜发电有限公司 | Dust removal apparatus for slag bin of slag dryer for thermal power plant and dust removal method therefor |
-
2013
- 2013-08-28 CN CN201320529522.1U patent/CN203549861U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036111A (en) * | 2017-06-03 | 2017-08-11 | 青岛达能环保设备股份有限公司 | Coal-burning boiler top suction type is comprehensive from dust suppression and recovery system |
| CN107062280A (en) * | 2017-06-03 | 2017-08-18 | 青岛达能环保设备股份有限公司 | Coal-burning boiler side-suction type is comprehensive from dust suppression and recovery system |
| CN111136082A (en) * | 2020-03-05 | 2020-05-12 | 靖江华和环保设备制造有限公司 | A double-pipe negative pressure dust collector |
| WO2025156512A1 (en) * | 2024-01-22 | 2025-07-31 | 华能莱芜发电有限公司 | Dust removal apparatus for slag bin of slag dryer for thermal power plant and dust removal method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 050031 No. 6 Jianbei Street, Chang'an District, Shijiazhuang City, Hebei Province Patentee after: POWERCHINA HEBEI ELECTRIC POWER ENGINEERING Co.,Ltd. Address before: 050031 No. 6 Jianbei Street, Chang'an District, Shijiazhuang City, Hebei Province Patentee before: HEBEI ELECTRIC POWER DESIGN & Research Institute |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |
|
| CX01 | Expiry of patent term |