CN104654263B - Cement kiln tail and tail bypass wind discharging exhaust-heat boiler - Google Patents
Cement kiln tail and tail bypass wind discharging exhaust-heat boiler Download PDFInfo
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- CN104654263B CN104654263B CN201510084116.2A CN201510084116A CN104654263B CN 104654263 B CN104654263 B CN 104654263B CN 201510084116 A CN201510084116 A CN 201510084116A CN 104654263 B CN104654263 B CN 104654263B
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- heat transfer
- facial canal
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- tail
- heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses a kind of cement kiln tail and tail bypass wind discharging exhaust-heat boiler, the rapping-off-ash device that the heat transfer facial canal including the boiler body arranged in vertical structure, being arranged in boiler body flue and heat transfer facial canal are equipped with, described heat transfer facial canal is arranged in boiler body flue in vertical setting of types mode, each heat transfer facial canal is vertically being wholely set, and rapping-off-ash device is arranged on the bottom of heat transfer facial canal vertical direction or arranges near the bottom of heat transfer facial canal vertical direction.It can thus be appreciated that: during vibration dust-cleaning of the present invention, heat transfer facial canal carries out deashing operation as entirety, and vibration transmission effect is good, and ash-removal effect is obvious；Dust stratification thereon falls the most successively, is possible to prevent heat-transfer area tube-surface dust stratification, is effectively prevented from producing the phenomenon that the heat transfer facial canal heat exchange efficiency thereby resulted in reduces.
Description
Technical field
Invention relates to cement clinker production line pure middle and low temperature waste heat recovery field, relates more specifically to a kind of cement kiln tail
And tail bypass wind discharging exhaust-heat boiler.
Background technology
Cement production enterprise is the major power consumer during national economy produces, and cement industry has been listed in what country economized on resources
One of major fields.Under State Council proposes the Policy Background of Accelerate Conservation-minded Society Construction, improve the economizing type of cement industry
Manufacture and application level, set up economizing type cement industry system significant.Highlight in the outer energy imbalance between supply and demand of Present Domestic
In the case of, to save energy and reduce the cost and become the problem that cement industry must complete, cement kiln pure middle and low temperature heat recovery technology makes this
Problem is well solved.In cement kiln pure middle and low temperature waste heat recovery field, waste heat boiler is key equipment, and waste heat pot
The design of the stove most important thing especially, it is not only related to cement kiln residual neat recovering system and imitates the recovery of cement producing line waste heat
Rate, can be also related to residual neat recovering system Effec-tive Function steadily in the long term simultaneously.
In cement production process, kiln tail preheater the flue gas discharged, grade is low, and flow is big, and dust content is high, waste gas
Relatively big (the about 100g/Nm of middle dust concentration3), and the adhesiveness of dust is stronger.In order to reclaim this low-grade waste gas residual heat, at kiln
Tail is provided with kiln tail waste heat boiler (being called for short SP stove).The bypass flue gas taken out by cement kiln tail smoke-box, taste is relatively
Height, flow is medium, and dust content is high, dust concentration greatly (about 500g/Nm in waste gas3), and the adhesiveness of dust is stronger.Bypass
The flue gas that leaks informaton, as a kind of new energy-conservation take-back model, is applied in production practices, is provided with bypass waste heat at kiln tail
Boiler (is called for short PH stove).Containing substantial amounts of dust in waste heat flue gas, when flue gas carries out heat exchange by waste heat boiler, by difference
The surface being attached to boiler heat-transfer facial canal of degree and hinder heat transfer, reduce the waste heat boiler thermal efficiency；Flue gas is at waste heat simultaneously
In boiler, the on-way resistance of flowing increases, thus additionally increases secondary energy sources consumption.
Cement kiln tail and tail bypass wind discharging exhaust-heat boiler, use vertical boiler, the heat transfer facial canal of vertical boiler mostly at present
The horizontally-arranged layout of employing level, this kind of structural thermal easy dust stratification of facial canal outer surface, can reduce boiler heat-transfer facial canal after dust stratification is more
Heat exchange efficiency.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is provided that a kind of cement kiln tail and tail bypass wind discharging exhaust-heat boiler, it will pass
Hot side pipe is changed into vertical vertical setting of types by the horizontally-arranged layout of level in prior art and is arranged, and bottom the heat transfer facial canal that this vertical setting of types is arranged
Equipped rapping-off-ash device so that heat transfer facial canal is being vertically an entirety；It can thus be appreciated that: the present invention applies bottom heat transfer facial canal
Rapping, can make the dust stratification of heat-transfer area tube-surface fall the most successively, is effectively reduced the superficial dust of heat transfer facial canal,
Thus maintain the heat transfer efficiency stability in heat-transfer area pipe range phase work process.
For realizing above technical purpose, the present invention will take following technical scheme:
A kind of cement kiln tail and tail bypass wind discharging exhaust-heat boiler, including the boiler body arranged in vertical structure, be arranged at
Heat transfer facial canal in boiler body flue and the heat transfer rapping-off-ash device that is equipped with of facial canal, described heat transfer facial canal is with vertical setting of types
Mode is arranged in boiler body flue, and each heat transfer facial canal is vertically being wholely set, and rapping-off-ash device is arranged on heat-transfer area
The bottom of pipe vertical direction or the bottom of close heat transfer facial canal vertical direction are arranged.
As a further improvement on the present invention, heat transfer facial canal of the present invention hangs and is arranged on ventilation beam, and ventilation beam
Two ends be connected with the boiler steel frame for support pot furnace body respectively, so that ventilation beam is arranged on boiler body flue across ground
In；Parallel with the length bearing of trend of boiler steel frame in the plane development direction of described heat transfer facial canal.
As a further improvement on the present invention, heat transfer facial canal of the present invention is hung by suspension gear and is arranged on ventilation beam
On；This suspension gear includes flap seat, connecting plate and shaft assembly；Flap seat is fixing with ventilation beam to be connected, and axle is passed through in connecting plate one end
Assembly is connected with flap seat, and the other end is then connected with the folder horse device being used for clamping installation heat transfer facial canal by shaft assembly.
As a further improvement on the present invention, suspension gear of the present invention is two groups, and rapping-off-ash device is one；
And rapping-off-ash device is along the middle part layout of boiler body flue, and two groups of suspension gears are symmetrically disposed in rapping-off-ash device
Both sides；Often in group suspension gear, the suspension gear arranged with heat transfer facial canal one_to_one corresponding including several.
As a further improvement on the present invention, folder horse device of the present invention includes that two panels presss from both sides horse, is respectively width folder horse, narrow
Folder horse；The semicircle identical with facial canal vertical direction pitch of conducting heat all it is correspondingly arranged on recessed on the wide opposite face pressing from both sides horse, narrow folder horse
Face, so that wide folder horse, narrow folder horse anchor ear are in the surface of heat transfer facial canal.
As a further improvement on the present invention, rapping-off-ash device of the present invention includes support, rotary shaft, sealing transmission
Case, internal vibrating rod and outside vibrating rod, wherein: internal vibrating rod is fixedly mounted on the bottom of heat transfer facial canal vertical direction；
Sealed transmission case is welded on the lateral wall of boiler body, and is provided with outside vibrating rod, this outside rapping in sealed transmission case
Bar and atmosphere side are provided with flexible sealing assembly；Described outside vibrating rod and described internal vibrating rod are at boiler body flue
Inner coaxial ground intimate contact is arranged；Described rotary shaft is connected with the clutch end of frequency modulation motor, and rotary shaft is by setting
The support being placed in boiler body flue supports, and this rotary shaft is sequentially set with some beater assemblies.
As a further improvement on the present invention, heat transfer facial canal of the present invention is set to the snakelike knot that horizontal reciprocating is tortuous
Structure.
As a further improvement on the present invention, heat transfer facial canal of the present invention is many groups, and each group heat transfer facial canal is the most flat
OK.
As a further improvement on the present invention, heat transfer facial canal of the present invention is in-line or is staggered in arrangement.
According to above technical scheme, relative to prior art, the present invention has the advantage that
1. conduct heat during the present invention changes vertical boiler the arrangement of facial canal, by the horizontally-arranged vertical setting of types that changes over, and in heat transfer
Equipped ash removal equipment for flapping bottom facial canal so that during vibration dust-cleaning, heat transfer facial canal carries out deashing operation, vibration transmission as entirety
Effective, ash-removal effect is obvious；Dust stratification thereon falls the most successively, is possible to prevent heat-transfer area tube-surface dust stratification, effectively
Avoid producing the phenomenon that the heat transfer facial canal heat exchange efficiency thereby resulted in reduces.
The most simple and compact for structure, good seal performance, reduces system air leakage amount, heat exchange efficiency is greatly improved.
3. stable equipment operation is reliable, reduces system maintenance work amount, reduces equipment O&M cost.
The mechanical means rapping of the most adjustable frequency (frequency conversion), effectively reduces the power consumption certainly of described waste heat boiler, carries further
The economic benefit of high afterheat boiler system.
Accompanying drawing explanation
Fig. 1 is that the integral arrangement of a kind of cement kiln tail and tail bypass wind discharging exhaust-heat boiler heat transfer facial canal overhung construction is shown
It is intended to；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is heat transfer facial canal and clamping plate and internal vibrating rod connection diagram；
Fig. 4 is heat transfer facial canal and folder horse device and suspension gear connection diagram；
Fig. 5 is the left view of Fig. 4；
Fig. 6 is rapping-off-ash apparatus structure schematic diagram；
Fig. 7 is the left view of Fig. 6；
In figure: 1. boiler body, 2. boiler steel frame, 3. heat transfer facial canal, 4. folder horse device, 5. suspension gear, 6.
Ventilation beam, 7. rapping-off-ash device, 8. shaft assembly, 9. flap seat, 10. connecting plate, 11. internal vibrating rods, 12. clamping plate,
13. beater assemblies, 14. supports, 15. rotary shafts, 16. sealed transmission cases, 17. outside vibrating rods, 18. flexible sealings
Assembly, 19. frequency conversion motors.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, it is further elucidated with the present invention.It should be understood that following detailed description of the invention is only
For the present invention being described rather than limiting the scope of the present invention.It should be noted that these accompanying drawings are the schematic diagram of simplification,
The basic structure of the present invention is described the most in a schematic way, and therefore it only shows the composition relevant with the present invention.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " on ", D score,
Orientation or the position relationship of the instruction such as "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description rather than instruction or dark
The device or the element that show indication must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right
The restriction of the present invention.Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relatively
Importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be bright
Show or implicitly include one or more this feature.In describing the invention, except as otherwise noted, the containing of " multiple "
Justice is two or more.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected；
Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, permissible
It it is the connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term exists with concrete condition
Concrete meaning in the present invention.
The present invention is a kind of cement kiln tail and tail bypass wind discharging exhaust-heat boiler, and main improvement is, the cloth of heat transfer facial canal
Putting mode and the design of rapping-off-ash device, specifically, as shown in figs. 1-7, cement kiln tail of the present invention and bypass are put
Wind waste heat boiler includes: boiler body 1, boiler steel frame 2, and conduct heat facial canal 3, presss from both sides horse device 4, suspension gear 5, ventilation beam 6 and shaking
Making ash handling equipment 7, the described heat transfer facial canal 3 being arranged in boiler body flue is set to the structure parallel with boiler steel frame 2,
Described rapping-off-ash device 7 is arranged on the position bottom heat transfer facial canal (screen) 3 vertical direction, and described heat transfer facial canal 3 passes through
With folder horse device 4 anchor ear of its major diameter fit in its surface, described folder horse device 4 is hung on by the circular groove on its top
On the shaft assembly 8 of suspension gear 5, the most separated by a distance between described suspension gear 5 it is welded in ventilation beam 6 Vertical Square
To bottom surface.
Described heat transfer facial canal 3 is tubulose (or membrane tube, screen shape) structure, is set to the snakelike knot that horizontal reciprocating is tortuous
Structure, heat transfer facial canal 3 is suspended in boiler steel frame 2 ventilation beam 6 bottom surface by folder horse device 4 and suspension gear 5.Described heat transfer facial canal hangs
Loop wheel machine structure 5, including flap seat 9, connecting plate 10 and shaft assembly 8, flap seat 9 is welded in the bottom surface of ventilation beam 6 vertical direction, connecting plate 10
It is connected the other end by shaft assembly 8 one end with flap seat 9 to be connected with folder horse device 4.
Described heat transfer facial canal 3 is arranged on same plane (in-line) or Different Plane (stagger arrangement), and described heat transfer facial canal 3 suspends in midair
Mechanism 5 is vertical with the ventilating and cooling direction of described ventilation beam 6；The ventilating and cooling direction of described ventilation beam 6 is moved towards with boiler steel frame 2
Vertically；Heat transfer facial canal 3 suspention parallel to each other is arranged in boiler body flue, is separated by mutually between described each heat transfer facial canal 3
Certain distance.
As shown in Figure 4,5, described heat transfer facial canal 3 by folder horse device 4 anchor ear with its major diameter fit in its surface, institute
State folder horse device 4 hang on the shaft assembly 8 of suspension gear 5 by the circular groove on its top, described suspension gear 5 it
Between the most separated by a distance bottom surface being welded in ventilation beam 6 vertical direction.
As it is shown on figure 3, the bottom of described heat transfer facial canal 3 vertical direction is provided with internal vibrating rod 11, described inside shakes
Make bar 11 to be welded on bottom most end two (or several) comb of heat transfer facial canal 3 vertical direction by clamping plate 12.
Rapping-off-ash device 7 of the present invention, is arranged on the bottom of heat transfer facial canal 3 vertical direction.Described rapping removes
Apparatus for ash 7, as shown in Figure 6,7, including beater assembly 13, support 14, rotary shaft 15, sealed transmission case 16, outside vibrating rod
17, rotary shaft 15 arranges on the support 14, and described power transmission shaft 15 is sequentially set with some beater assemblies 13；Sealed transmission case
16 are welded on boiler body lateral wall, and in described sealed transmission case, 16 are provided with outside vibrating rod 17, described outside rapping
Bar 17 and atmosphere side are provided with special flexible sealing assembly 18, described outside vibrating rod 17 and described internal vibrating rod 11
Arrange in (on same centrage) intimate contact with one heart inside boiler body flue.
The present invention also relates to a kind of cement kiln tail and tail bypass wind discharging exhaust-heat boiler heat transfer the shaking of facial canal overhung construction
Printing method, described rapping method is to use the mechanical means of the adjustable frequency, by some rappings of described rapping-off-ash device 7
The order of hammer assembly 13 taps, and makes heat transfer facial canal 3 vibrate with certain frequency, shakes by dust adhered thereto.Described can
The mechanical means of frequency modulation time, drives described rapping-off-ash device 7 rotary shaft 15 to realize by frequency conversion motor 19.
Described rapping method is to described outside by some beater assemblies 13 order of described rapping-off-ash device 7
Vibrating rod 17 carries out the vibratory impulse of horizontal direction, gives, by outside vibrating rod 17 conduction, the inside being welded on heat transfer facial canal 3
Vibrating rod 11, and then make heat transfer facial canal 3 vibrate with certain frequency.
Cement kiln tail and tail bypass wind discharging exhaust-heat boiler use vertical frame structure, and heat transfer facial canal 3 vertically depending is at boiler
Ventilation beam 6 bottom surface of steelframe 2, the smoke inlet of waste heat boiler to exhanst gas outlet is followed successively by steam superheater, vaporizer and soft water
Heater.
The heat transfer facial canal 3 of the present invention uses snakelike light pipe or membrane tube, uses suitable between heat transfer facial canal 3 and heat transfer facial canal 3
Arranging or be staggered in arrangement, being arranged by the twin shaft overhung construction of vertical direction, heat transfer facial canal 3 is along the level of ventilation beam 6 ventilating and cooling
Direction can Free Slosh, be effectively improved the ash-removal effect of rapping-off-ash device 7, be greatly improved the thermal efficiency of boiler body.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned technological means, also includes
The technical scheme being made up of above technical characteristic combination in any.
With the above-mentioned desirable embodiment according to the present invention for enlightenment, by above-mentioned description, relevant staff is complete
Entirely can carry out various change and amendment in the range of without departing from this invention technological thought.The technology of this invention
The content that property scope is not limited in description, it is necessary to determine its technical scope according to right.
Claims (8)
1. cement kiln tail and a tail bypass wind discharging exhaust-heat boiler, including the boiler body arranged in vertical structure, is arranged at pot
Heat transfer facial canal in furnace body flue and the heat transfer rapping-off-ash device that is equipped with of facial canal, it is characterised in that described heat transfer
Facial canal is arranged in boiler body flue in vertical setting of types mode, and each heat transfer facial canal is vertically being wholely set, and rapping-off-ash device sets
Put in the bottom of heat transfer facial canal vertical direction or arrange near the bottom of heat transfer facial canal vertical direction；Described rapping-off-ash device
Including support, rotary shaft, sealed transmission case, internal vibrating rod and outside vibrating rod, wherein: internal vibrating rod is fixedly mounted on
The bottom of heat transfer facial canal vertical direction；Sealed transmission case is welded on the lateral wall of boiler body, and arranges in sealed transmission case
Having outside vibrating rod, this outside vibrating rod and atmosphere side are provided with flexible sealing assembly；Described outside vibrating rod is with described
Internal vibrating rod is arranged at boiler body flue inner coaxial ground intimate contact；Described rotary shaft is defeated with the power of frequency modulation motor
Go out end to connect, and rotary shaft is supported by the support being arranged in boiler body flue, this rotary shaft is sequentially set with some
Beater assembly.
Cement kiln tail the most according to claim 1 and tail bypass wind discharging exhaust-heat boiler, it is characterised in that heat transfer facial canal hangs
It is arranged on ventilation beam, and the two ends of ventilation beam are connected with the boiler steel frame for support pot furnace body respectively, so that ventilation beam
It is arranged in boiler body flue across ground；The plane development direction of described heat transfer facial canal and the length bearing of trend of boiler steel frame
Parallel.
Cement kiln tail the most according to claim 2 and tail bypass wind discharging exhaust-heat boiler, it is characterised in that described heat transfer facial canal
Hung by suspension gear and be arranged on ventilation beam；This suspension gear includes flap seat, connecting plate and shaft assembly；Flap seat and ventilation
Beam is fixing to be connected, and connecting plate one end is connected with flap seat by shaft assembly, and the other end is then passed with being used for clamping installing by shaft assembly
The folder horse device of hot side pipe connects.
Cement kiln tail the most according to claim 3 and tail bypass wind discharging exhaust-heat boiler, it is characterised in that described suspention machine
Structure is two groups, and rapping-off-ash device is one；And rapping-off-ash device is along the middle part layout of boiler body flue, and two groups of suspentions
Mechanism is symmetrically disposed in the both sides of rapping-off-ash device；Often in group suspension gear, the most right with heat transfer facial canal including several
The suspension gear that should arrange.
5. according to the cement kiln tail described in claim 3 or 4 and tail bypass wind discharging exhaust-heat boiler, it is characterised in that described folder horse
Device includes that two panels presss from both sides horse, is respectively width folder horse, narrow folder horse；All it is correspondingly arranged on and passes on the wide opposite face pressing from both sides horse, narrow folder horse
The half round concave that hot side pipe vertical direction pitch is identical, so that wide folder horse, narrow folder horse anchor ear are in the surface of heat transfer facial canal.
Cement kiln tail the most according to claim 1 and tail bypass wind discharging exhaust-heat boiler, it is characterised in that described heat-transfer area
Pipe is set to the serpentine configuration that horizontal reciprocating is tortuous.
Cement kiln tail the most according to claim 6 and tail bypass wind discharging exhaust-heat boiler, it is characterised in that described heat-transfer area
Pipe is for many groups, and each group heat transfer facial canal is parallel to each other.
Cement kiln tail the most according to claim 7 and tail bypass wind discharging exhaust-heat boiler, it is characterised in that described heat transfer facial canal
For in-line or be staggered in arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510084116.2A CN104654263B (en) | 2015-02-16 | 2015-02-16 | Cement kiln tail and tail bypass wind discharging exhaust-heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510084116.2A CN104654263B (en) | 2015-02-16 | 2015-02-16 | Cement kiln tail and tail bypass wind discharging exhaust-heat boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104654263A CN104654263A (en) | 2015-05-27 |
| CN104654263B true CN104654263B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510084116.2A Active CN104654263B (en) | 2015-02-16 | 2015-02-16 | Cement kiln tail and tail bypass wind discharging exhaust-heat boiler |
Country Status (1)
| Country | Link |
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| CN (1) | CN104654263B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020029048A1 (en) * | 2018-08-06 | 2020-02-13 | 江苏东九重工股份有限公司 | Cement kiln rear portion and bypass waste heat boiler |
| CN109631596A (en) * | 2018-11-28 | 2019-04-16 | 无为华塑矿业有限公司 | A kind of limekiln flue gas heat recovery system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000018501A (en) * | 1998-06-30 | 2000-01-18 | Ishikawajima Harima Heavy Ind Co Ltd | Heat-transfer pipe structure of waste heat recovery boiler |
| CN101509655B (en) * | 2008-09-02 | 2010-11-17 | 安徽海螺川崎工程有限公司 | Cement kiln tail waste heat boiler heating tube suspension structure |
| JP5580661B2 (en) * | 2010-05-24 | 2014-08-27 | 川崎重工業株式会社 | Boiler dust removal mechanism |
| CN202012931U (en) * | 2011-01-30 | 2011-10-19 | 大连易世达新能源发展股份有限公司 | Direct-coupled vibrating and beating ash removal apparatus |
| CN202793038U (en) * | 2012-07-25 | 2013-03-13 | 大连易世达新能源发展股份有限公司 | Cement kiln rear-end heat recovery boiler with mechanical brush dust-removing devices |
| CN204534508U (en) * | 2015-02-16 | 2015-08-05 | 江苏东九重工股份有限公司 | Cement kiln tail and tail bypass wind discharging exhaust-heat boiler |
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- 2015-02-16 CN CN201510084116.2A patent/CN104654263B/en active Active
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| CN104654263A (en) | 2015-05-27 |
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Address after: 224005 No. 5, Pioneer Road, Jiangsu, Yancheng City Applicant after: East, Jiangsu nine heavy industry limited companies Address before: 224005 No. 5, Pioneer Road, Jiangsu, Yancheng City Applicant before: Yancheng City Boiler Manufacturing Co., Ltd. |
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