CN107420886B - A kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler - Google Patents
A kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler Download PDFInfo
- Publication number
- CN107420886B CN107420886B CN201710512564.7A CN201710512564A CN107420886B CN 107420886 B CN107420886 B CN 107420886B CN 201710512564 A CN201710512564 A CN 201710512564A CN 107420886 B CN107420886 B CN 107420886B
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- economizer
- vertical shaft
- natural circulation
- bed combustion
- block
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a kind of anti-caking ash Natural Circulation fluidized-bed combustion boilers, solve the problems, such as that existing boiler heat exchange efficiency is lower, its key points of the technical solution are that a kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler, including burner hearth, cyclone separator and vertical shaft, drum is installed above the burner hearth, the cyclone separator is connect with burner hearth with cyclone separator respectively, economizer and air preheater are equipped in the vertical shaft, equipped with the cleaning block that several slide up and down in the vertical shaft, the metal hairbrush for cleaning is fixedly connected on the cleaning block, the cleaning block slips through economizer up and down, the maximum outside diameter for cleaning block is less than the gap between adjacent economizer.By the setting of the cleaning block slid up and down, the possibility that cigarette ash is attached on economizer is reduced, the heat exchange efficiency of equipment is increased.
Description
Technical field
The present invention relates to boiler technology fields, more specifically, it relates to a kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler.
Background technique
Circulating fluidized bed boiler is generally divided into front and the vertical shaft of tail portion two using single drum, natural circulation mode.It follows
Circulation fluidized bed boiler mainly uses high-ash inferior fuel, and for coal after hearth combustion, flue gas carries a large amount of grey particle
To upper furnace, the thicker grey particle of a part is continued to send burner hearth back to by separator separation, and the thinner grey particle of another part is not
It can be trapped and escape by separator, with flue gas to tail vertical well, tail vertical well lining is equipped with high temperature superheater, reheater, low
The heat exchanger components such as warm superheater, economizer, air preheater.
Currently, the Chinese patent of Publication No. CN103453521B discloses a kind of recirculating fluidized bed pot of palm slag that burns
Furnace comprising drum, burner hearth, superheater, economizer, air preheater, boiler export flue are equipped with above the burner hearth
The drum, flue gas flow direction direction is sequentially installed with the superheater, economizer, air preheater, boiler export flue, described
The bottom side of burner hearth is circumscribed with batcher, to palm slag pipe, and the batcher leads to the lower furnace portion to palm slag pipe
Combustion chamber, the import to palm slag pipe are provided with the air-intake device dried towards the burner hearth, combustion chamber lower part cloth
It is equipped with residue outlet, bottom ignition device is provided with below the combustion chamber, the burner hearth connects the interchannel peace of the superheater
Equipped with enclosure wall tube, the burner hearth, which leads in the space of the enclosure wall tube, has been vertically arranged the cold high temperature cyclone separator of round vapour,
Flue gas in the burner hearth is connected to the gas inlet of the cold high temperature cyclone separator of the round vapour, the cold high-temp. vortex of the circle vapour
The top exhanst gas outlet of separator is equipped with above pipeline connection to the vertical flue at rear portion, the cold high-temp. vortex separation of circle vapour
Device bottom is provided with returning charge channel, and the end in the returning charge channel is connected to the combustion chamber of the burner hearth, and the saturation of the drum is steamed
Vapour outlet pipe connects the upper inlet pipeline of the cold high temperature cyclone separator of the round vapour, the cold high temperature of the circle vapour by connecting tube
The lower part outlet pipeline of cyclone separator connects the import of the enclosure wall tube by connecting line, and the outlet of the enclosure wall tube is led to
The import of the superheater, steam (vapor) outlet header described in the outlet of the superheater.
Fine ash particle can be cohered to exchange heat in high temperature superheater, reheater, low temperature superheater, economizer, air preheater etc.
On component, so that soot build-up, on heat exchanger components, cigarette ash can be such that the heat exchange efficiency of these heat exchanger components is greatly lowered, or even lose
Heat exchange function is removed, efficiency is lower.
Summary of the invention
In view of the deficienciess of the prior art, leading to the invention reside in a kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler is provided
The setting for crossing the cleaning block slid up and down, reduces the possibility that cigarette ash is attached on economizer, increases the heat exchange efficiency of equipment.
To achieve the above object, the present invention provides the following technical scheme that a kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler,
Including burner hearth, cyclone separator and vertical shaft, drum is installed above the burner hearth, the cyclone separator respectively with burner hearth and rotation
Wind separator connects, and the vertical shaft is interior to be equipped with economizer and air preheater, and sliding above and below several is equipped in the vertical shaft
Block is cleaned, described to clean the metal hairbrush being fixedly connected on block for cleaning, the cleaning block slips through economizer up and down,
The maximum outside diameter for cleaning block is less than the gap between adjacent economizer, and the vertical shaft inner wall is fixedly connected to two sides up and down
Motor is equipped with terminal pad on the motor, and the motor rotation is to drive terminal pad to rotate along its axis direction, described in two
Cable wire is arranged between terminal pad, the cleaning block is fixedly connected on cable wire.
By using above-mentioned technical proposal, the cleaning block slid up and down can pass through economizer, be fixedly connected on cleaning block
On metal hairbrush can be connected on economizer, and economizer is followed to slide up and down, economizer up and down can in slipping
Economizer is washed away, the cigarette ash on economizer is brushed away, the possibility that cigarette ash is attached on economizer is reduced, increases the heat exchange of equipment
Efficiency；Cable wire, which is able to drive, cleans block sliding up and down, while cable wire has flexibility, increases the freedom degree for cleaning block, reduces
It cleans block and is connected on economizer and interfere, the possibility of damage increases the security performance of equipment.
The present invention is further arranged to: the economizer is in in-line arrangement.
By using above-mentioned technical proposal, the coal economizer structure of in-line setting is more loose, reduces the abrasion of economizer,
The possibility of fouling of heating surface is also reduced, the heat exchange property of equipment is increased.
The present invention is further arranged to: being fixedly connected with frame on the outside of the economizer, is equipped on the outside of the frame several
A connecting shaft being threaded through on vertical shaft, the economizer and frame are connected on vertical shaft along the axis direction sliding of connecting shaft.
By using above-mentioned technical proposal, the setting of connecting shaft is able to drive frame and economizer or so sliding, reduces
It cleans in block or more slipping, the possibility damaged after economizer and cleaning block interference increases the security performance of equipment.
The present invention is further arranged to: spring is arranged in the connecting shaft, one end of the spring is fixedly connected on perpendicular
On the inner wall of well, the other end of the spring is fixedly connected on frame.
By using above-mentioned technical proposal, frame and economizer can be fixed in position by spring, when cleaning block
After sliding is connected on economizer, frame and economizer or so sliding clean block after economizer, and economizer is on a left side for spring
Bottom right can restore elastic deformation, return to initial position, reduce the possibility of economizer shaking, increase the stability of equipment.
The present invention is further arranged to: pneumatic vibrator is equipped on the frame, the pneumatic vibrator is to drive frame
Frame and economizer slide along axis direction of connecting shaft or so.
By using above-mentioned technical proposal, after the completion of cleaning block and cleaning, pneumatic vibrator can starting of oscillation economizer again,
The possibility that cigarette ash is attached on economizer is reduced, the cleaning efficiency of equipment is increased.
The present invention is further arranged to: the horizon bar of horizontal direction is equipped on the vertical shaft inner wall, on the horizon bar
Equipped with the link block slid along its axis direction, the vertical rod of vertical direction is fixedly connected on the link block, it is described vertical
Bar is equipped with the slipping block slid along its axis direction, and the motor is mounted on slipping block.
By using above-mentioned technical proposal, slipping block sliding is able to drive cleaning sliding left and right sliding, increases cleaning block
Cleaning range, while block will be cleaned when being connected on economizer, the sliding of slipping block, which can be realized, to be cleaned the cleaning of block and act on.
The present invention is further arranged to: the slipping block is equipped with rotating disc, and the axis vertical of the rotating disc is arranged, institute
It states rotating disc to be rotatably connected on slipping block along its axis direction, the motor is fixedly connected on rotating disc.
By using above-mentioned technical proposal, turn disc is able to drive motor rotation, and cleaning block is connected to
The different location of economizer increases the use scope of economizer.
The present invention is further arranged to: the cleaning block is spherical.
By using above-mentioned technical proposal, spherical cleaning block to clean block when being connected on economizer, Neng Goufang
Just it slides, reduces the possibility for cleaning block and economizer interference, cleaning process is enabled to continue to carry out.
The present invention is further arranged to: the soot blower for blowing off cigarette ash on economizer is equipped on the vertical shaft.
By using above-mentioned technical proposal, the setting of soot blower reduces the possibility that cigarette ash is attached on economizer, increases
The heat exchange efficiency of equipment is added.
In conclusion reducing economizer the invention has the following advantages: economizer and frame can control sliding
With the possibility for cleaning block interference, cleaning can be stablized by cleaning block；The setting of cable wire has biggish freedom degree so that cleaning block, reduces
Economizer and the possibility for cleaning block interference, increase the heat exchange efficiency of equipment.
Detailed description of the invention
Fig. 1 is the front view of the present embodiment；
Fig. 2 is enlarged drawing at the A of Fig. 1；
Fig. 3 is enlarged drawing at the B of Fig. 1；
Fig. 4 is enlarged drawing at the C of Fig. 1.
Appended drawing reference: 1, burner hearth；2, drum；3, batcher；4, material blanking tube；5, combustion chamber；6, residue outlet；7, igniting dress
It sets；8, cyclone separator；9, vertical shaft；10, economizer；11, frame；12, connecting shaft；13, spring；14, pneumatic vibrator；15,
Air compressor machine；16, pipeline；17, inlet valve；18, air accumulator；19, outlet valve；20, nozzle；21, air preheater；22, cigarette is exported
Road；23, horizon bar；24, link block；25, vertical rod；26, slipping block；27, rotating disc；28, motor；29, terminal pad；30, steel
Rope；31, block is cleaned；32, metal hairbrush.
Specific embodiment
Referring to figs. 1 to Fig. 4, the present invention will be further described.
As depicted in figs. 1 and 2, a kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler, including burner hearth 1, the top installation of burner hearth 1
There is drum 2, the bottom side of burner hearth 1 is circumscribed with batcher 3, material blanking tube 4, and batcher 3, material blanking tube 4 lead to 1 lower part of burner hearth
Combustion chamber 5,5 lower disposed of combustion chamber have residue outlet 6, and igniter 7 is provided with below combustion chamber 5, is equipped on the right side of burner hearth 1 vertical
To cyclone separator 8 is disposed with, the right side of cyclone separator 8 is equipped with the vertical shaft 9 of vertical direction, is equipped with economizer above vertical shaft 9
10, economizer 10 is arranged in in-line, and economizer 10 is Membrane Economizer 10, and the outside of economizer 10 is fixedly connected with frame
11, the outside of frame 11 is fixedly connected with connecting shaft 12, and the other end of connecting shaft 12 is threaded through on the inner wall of vertical shaft 9, connecting shaft
Spring 13 is arranged on 12, one end of spring 13 is fixedly connected on the frame 11, and one end of spring 13 is fixedly connected on vertical shaft 9
On inner wall；Pneumatic vibrator 14 is also fixedly connected on frame 11, pneumatic vibrator 14 is able to drive the sliding of frame 11 or so；It is perpendicular
Soot blower is installed, soot blower includes the air compressor machine 15 being fixedly connected on vertical shaft 9, the output end of air compressor machine 15 on well 9
It is connected with pipeline 16, is connected with inlet valve 17, air accumulator 18 and outlet valve 19 on pipeline 16 in turn, pipeline 16 is far from air compressor machine 15
One end be equipped with the nozzle 20 that is threaded through on 9 inner wall of vertical shaft, nozzle 20 is horizontally disposed, and nozzle 20 is slightly above economizer 10, spray
Gas out is towards economizer 10；The lower section of vertical shaft 9 is equipped with air preheater 21, and the right side of vertical shaft 9 is additionally provided with exhaust pass 22.
As shown in figures 1 and 3, the upside of vertical shaft 9 is equipped with the horizon bar 23 of horizontal direction, and horizon bar 23 is equipped with left and right and slides
The link block 24 of shifting is fixedly connected with the vertical rod 25 of vertical direction, the axis of vertical rod 25 between former and later two link blocks 24
Perpendicular to the axis of horizon bar 23, vertical rod 25 is equipped with the slipping block 26 of front and back sliding, is fixedly connected with and turns on slipping block 26
Moving plate 27, the axis vertical setting of rotating disc 27, rotating disc 27 can be rotatably connected on slipping block 26 along its axis direction, turn
The upside of Moving plate 27 is fixedly connected with motor 28, and the front side of motor 28 is equipped with terminal pad 29, and terminal pad 29 can be along its axis side
To being rotatably connected on motor 28, the rotation of motor 28 is able to drive the rotation of terminal pad 29, and cricoid cable wire 30 can be set in
Between lower two terminal pads 29, and the rotation of motor 28 is able to drive the sliding of about 30 cable wire.
As shown in Figure 1 and Figure 4, it is fixedly connected to spherical cleaning block 31 on the cable wire 30 of two sides, cleans solid on block 31
Surely several metal hairbrush 32 are connected with, about 30 cable wire slides, and the glide direction of the cleaning block 31 of the left and right sides is on the contrary, clean
The diameter of block 31 is less than the gap between adjacent economizer 10.
Working principle: operator controls slipping block 26 in the horizontal direction with vertical direction or so sliding, and slipping block 26 is sliding
The position for needing to clean is moved to, rotary motion disk 27 enables the cable wire 30 of two sides to be connected on economizer 10, or makes
The cable wire 30 of two sides is connected to the ipsilateral of economizer 10, and driving motor 28 rotates, and motor 28 is able to drive the cleaning block 31 of two sides
Sliding up and down, and 26 direction of motion of slipping block of two sides is opposite；After cleaning block 31 close to economizer 10, metal hairbrush 32 is abutted
It on economizer 10, cleans block 31 and continues to slide, 32 deformation of metal hairbrush cleans economizer 10, and is connected to when cleaning block 31
When on economizer 10, cable wire 30 to far from economizer 10 side shake, economizer 10 to far from clean block 31 a side slip,
After cleaning block 31 across economizer 10, cable wire 30 and economizer 10 are close to each other, and the pressure-air that nozzle 20 sprays can
Cigarette ash is continued to blow down, increases the cleaning efficiency of equipment；It will be cleaned after block 31 is connected on economizer 10 simultaneously, along economizer
The mobile slipping block 26 of 10 extending direction, equally can be realized the cleaning of economizer 26.
After the completion of cleaning the sliding of block 31, start pneumatic vibrator 14, pneumatic vibrator 14 is able to drive economizer 10 or so
Sliding, reduces cigarette ash and continues the possibility being attached on economizer 26, increase the heat exchange efficiency of equipment.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler, including burner hearth (1), cyclone separator (8) and vertical shaft (9), the furnace
It is equipped with drum (2) above thorax (1), the cyclone separator (8) connect with burner hearth (1) with vertical shaft (9) respectively, the vertical shaft
(9) economizer (10) and air preheater (21) are equipped in, it is characterised in that: be equipped on several and glide in the vertical shaft (9)
The cleaning block (31) of shifting, it is described to clean the metal hairbrush (32) being fixedly connected on block (31) for cleaning, the cleaning block
(31) it slips through economizer (10) up and down, between the maximum outside diameter for cleaning block (31) is less than between adjacent economizer (10)
Gap, vertical shaft (9) inner wall are fixedly connected to motor (28) two sides up and down, are equipped with terminal pad on the motor (28)
(29), motor (28) rotation is to drive terminal pad (29) to rotate along its axis direction, between two terminal pads (29)
It is arranged with cable wire (30), the cleaning block (31) is fixedly connected on cable wire (30).
2. a kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler according to claim 1, it is characterised in that: the economizer
It (10) is in in-line arrangement.
3. a kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler according to claim 2, it is characterised in that: the economizer
(10) outside is fixedly connected with frame (11), several are equipped on the outside of the frame (11) and is threaded through the connecting shaft on vertical shaft (9)
(12), the economizer (10) and frame (11) are connected on vertical shaft (9) along the axis direction sliding of connecting shaft (12).
4. a kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler according to claim 3, it is characterised in that: the connecting shaft
(12) it is arranged on spring (13), one end of the spring (13) is fixedly connected on the inner wall of vertical shaft (9), the spring (13)
The other end be fixedly connected on frame (11).
5. a kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler according to claim 4, it is characterised in that: the frame (11)
On be equipped with pneumatic vibrator (14), the pneumatic vibrator (14) is to drive frame (11) and economizer (10) along connecting shaft
(12) axis direction or so sliding.
6. a kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler according to claim 1, it is characterised in that: the vertical shaft (9)
The horizon bar (23) of horizontal direction is installed, the horizon bar (23) is equipped with the link block slid along its axis direction on inner wall
(24), the vertical rod (25) of vertical direction is fixedly connected on the link block (24), the vertical rod (25) is in horizontally disposed
And it is vertical setting with horizon bar (23)；The vertical rod (25) is equipped with the slipping block slid along its axis direction
(26), the motor (28) is mounted on slipping block (26).
7. a kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler according to claim 6, it is characterised in that: the slipping block
(26) rotating disc (27) are equipped with, the axis vertical of the rotating disc (27) is arranged, and the rotating disc (27) is along its axis direction
It is rotatably connected on slipping block (26), the motor (28) is fixedly connected on rotating disc (27).
8. a kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler according to claim 7, it is characterised in that: the cleaning block
It (31) is spherical.
9. a kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler according to claim 1 or 2, it is characterised in that: the vertical shaft
(9) soot blower for blowing off cigarette ash on economizer (10) is installed on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710512564.7A CN107420886B (en) | 2017-06-29 | 2017-06-29 | A kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710512564.7A CN107420886B (en) | 2017-06-29 | 2017-06-29 | A kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler |
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| Publication Number | Publication Date |
|---|---|
| CN107420886A CN107420886A (en) | 2017-12-01 |
| CN107420886B true CN107420886B (en) | 2019-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710512564.7A Active CN107420886B (en) | 2017-06-29 | 2017-06-29 | A kind of anti-caking ash Natural Circulation fluidized-bed combustion boiler |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109099412B (en) * | 2018-09-28 | 2023-12-15 | 江阴德耐特重工科技有限公司 | Mounting structure of high-temperature high-pressure back flue economizer of power station |
| CN116518362B (en) * | 2023-04-17 | 2024-01-26 | 福建省福能龙安热电有限公司 | Low-temperature coal economizer for boiler |
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| EP1979678A2 (en) * | 2006-01-30 | 2008-10-15 | GKS - Gemeinschaftskraftwerk Schweinfurt GmbH | Method and device for cleaning heating surfaces in thermal plants |
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| CN203744240U (en) * | 2014-03-14 | 2014-07-30 | 泰安华丰顶峰热电有限公司 | Material supplementing type soot blower of circulating fluidized bed boiler |
| CN104990070A (en) * | 2015-05-22 | 2015-10-21 | 四川省宜宾惠美线业有限责任公司 | Vibration ash removal type circulating fluidized bed boiler |
| CN205560794U (en) * | 2016-04-27 | 2016-09-07 | 乌海昊华高科节能技术有限公司 | Economizer deashing structure |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2962264A (en) * | 1956-04-21 | 1960-11-29 | K E Patenter Ab | Means for cleaning heating surfaces in economizers and similar equipment |
| EP1979678A2 (en) * | 2006-01-30 | 2008-10-15 | GKS - Gemeinschaftskraftwerk Schweinfurt GmbH | Method and device for cleaning heating surfaces in thermal plants |
| CN202371688U (en) * | 2011-12-19 | 2012-08-08 | 武汉都市环保工程技术股份有限公司 | Flue gas waste heat recovery boiler of rotary hearth furnace |
| CN202733862U (en) * | 2012-07-09 | 2013-02-13 | 大连易世达新能源发展股份有限公司 | Horizontal ore smelting furnace waste heat boiler with mechanical brush ash removal devices |
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| CN107420886A (en) | 2017-12-01 |
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Address after: No. 1388, nine Li Ting Avenue, Cao Qiao street, Pinghu City, Jiaxing, Zhejiang Patentee after: PINGHU HONGXIN THERMAL POWER Co.,Ltd. Address before: 314214, Jingxing Industrial Zone, Pinghu, Zhejiang, Jiaxing (nine Li Pavilion) Patentee before: PINGHU THERMAL POWER PLANT |