CN206112887U - Energy -conserving horizontal rotary kiln waste heat boiler that removes dust - Google Patents
Energy -conserving horizontal rotary kiln waste heat boiler that removes dust Download PDFInfo
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- CN206112887U CN206112887U CN201621099925.7U CN201621099925U CN206112887U CN 206112887 U CN206112887 U CN 206112887U CN 201621099925 U CN201621099925 U CN 201621099925U CN 206112887 U CN206112887 U CN 206112887U
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- evaporimeter
- heater
- water
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- waste 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
Abstract
The utility model discloses an energy -conserving horizontal rotary kiln waste heat boiler that removes dust, the utility model discloses a furnace body that has into mouth and outlet flue to reach the water -cooling deposit room that the mouth communicates that advances with the furnace body, water -cooling deposit room top is equipped with the high temperature over heater to and set up in the inside water -cooling gas baffle of water -cooling deposit room, water -cooling deposit room bottom is equipped with the deposit room ash bucket, the furnace body top still is equipped with and is located the outside drum of furnace body, the furnace body bottom is equipped with the furnace body ash bucket. The utility model has the advantages of user's boiler small investment, compact structure, the energy consumption is lower, the trouble is few, have fine dust removal effect, reduce the evaporating heating surface deposition, practical life is long, energy -conserving, for the user provides high -quality superheated steam, improve the generating efficiency.
Description
Technical field
The utility model is related to a kind of energy-saving dedusting horizontal revolving kiln waste heat boiler.
Background technology
At present, roasting in kilns, the high mine dust of 500～650 DEG C or so of roasting generation are being turned round to mineral aggregate in metallurgy industry
Concentration, high adhesiveness flue gas, into waste heat boiler heat exchange is carried out, and absorbs the waste heat in flue gas, and the water in boiler is converted into
Steam with pressure goes to generate electricity or as industrial steam again.About 75% mine dust in flue gas will be removed simultaneously, and flue-gas temperature is down to 180
Boiler is left after DEG C goes next procedure to produce zinc oxide.There is following asking in the Natural Circulation HRSG for running in the market
Topic：1. the expansion chamber that rotary kiln flue gas out is entered before boiler（Play dustproof function）Using brick, cost of manufacture is higher,
Sealing is poor；2. boiler adopts vertical structure, and volume is larger, and boiler cost of investment is higher；3. the exhaust gas temperature of boiler design is about
250 DEG C, tail flue gas high fume temperature, cleaner investment is high, and waste heat loss is larger；4. the steam of boiler design is saturation steaming
Vapour, generating efficiency is low；5. boiler heating surface dust stratification is serious, clears up more difficult；6. boiler ash removal traditional design is bunker wall vibration
Device.
Utility model content
The purpose of this utility model is to improve the problems referred to above, there is provided a kind of energy-saving dedusting horizontal revolving kiln waste heat boiler.
To achieve these goals, the technical solution adopted in the utility model is as follows：
Energy-saving dedusting horizontal revolving kiln waste heat boiler, including the body of heater with smoke inlet and outlet flue, and with body of heater
The water-cooling sedimentation room of smoke inlet connection；The water-cooling sedimentation ceiling portion is provided with high temperature superheater, and is arranged at water-cooling sedimentation room
Internal water cooling smoke baffle plate, water-cooling sedimentation room bottom is provided with expansion chamber ash bucket；The body of heater top is additionally provided with positioned at stove
The drum of external body, the bottom of furnace body is provided with body of heater ash bucket.
Further, water-cooling sedimentation room one end is connected with rotary kiln outlet, and the other end passes through expansion chamber exhanst gas outlet
Connect with body of heater；The expansion chamber exhanst gas outlet is connected by connection flue with the smoke inlet of body of heater.
Yet further, the vertical gas pass being provided with the body of heater below smoke inlet, and be arranged in body of heater with
The horizontal flue that vertical gas pass is communicated；Medium temperature overheater, low temperature superheater, the first evaporation are sequentially provided with the horizontal flue
Device, the second evaporimeter, the 3rd evaporimeter, the first economizer, the second economizer and except oxygen evaporator；The medium temperature overheater is close
Vertical gas pass, it is described except oxygen evaporator is near outlet flue；The drum steams respectively with water-cooling sedimentation room, the first evaporimeter, second
Send out device, the 3rd evaporimeter to be connected；It is described except oxygen evaporator is connected with the oxygen-eliminating device being arranged at outside body of heater.Wherein, vertical gas pass
Wall adopts film water cold wall structure.
Further, the top difference of the water-cooling sedimentation room, the first evaporimeter, the second evaporimeter, the 3rd evaporimeter
Connected with drum by the upper collecting chamber that is sequentially communicated, carbonated drink connecting tube；The water-cooling sedimentation room, the first evaporimeter, the second evaporation
Device, the bottom of the 3rd evaporimeter are connected respectively by the lower header that is sequentially communicated, distribution pipe with drum.
In addition, the body of heater is connected by common downcomer with distribution pipe.
Additionally, it is described except oxygen evaporator top by be arranged at upper collecting chamber above except oxygen evaporator, carbonated drink connecting tube with
Oxygen-eliminating device is connected, and the deoxygenation base of evaporator is connected by being arranged at the lower header below except oxygen evaporator with oxygen-eliminating device.
Further, the body of heater medium temperature overheater, low temperature superheater, the first evaporimeter, the second evaporimeter, the 3rd evaporation
Device, the first economizer, the second economizer and the top except oxygen evaporator, side are equipped with the dress of the explosion deashing on body of heater
Put；First economizer, the second economizer and except oxygen evaporator adopt snakelike tubular construction, be suspended on ceiling, and per group steaming
Send out device top to seal using steel plate, dust stratification in easy access and cleaning heating surface, the steel plate of sealing is connected on the wall of side, prevents
Thermal expansion；And it is provided with inspection manhole and passage between every group of heating surface.
Yet further, first evaporimeter, the second evaporimeter, the 3rd evaporimeter are by some flute profile heating surface tubes
Group composition；The flute profile heating surface tube group is intake header, heating surface tube water outlet header and flute profile heating surface tube group by heating surface tube
Into；The heating surface tube water inlet header is connected with lower header, and the heating surface tube water outlet header is connected with upper collecting chamber.
Further, the water-cooling sedimentation outdoor is additionally provided with mechanical shaking device.
In addition, the body of heater ash bucket and expansion chamber ash bucket are divided into multiple ash buckets, and it is equipped with below each ash bucket
Ash discharging hole, the body of heater ash bucket top is additionally provided with body of heater gas baffle；The body of heater ash bucket and expansion chamber ash bucket lower section are provided with and scrape
Plate slag remover.
The utility model compared with prior art, with advantages below and beneficial effect：
The utility model has that user's boiler small investment, compact conformation, energy consumption are relatively low, failure is few, has good dedusting to imitate
Really, the advantages of reducing evaporating heating surface dust stratification, long service life, energy-conservation, provides the user the superheated steam of high-quality, improves and generates electricity
Efficiency.
Description of the drawings
Fig. 1 is main sectional view of the present utility model.
Fig. 2 is the utility model side view.
Fig. 3 is A-A in Fig. 1 to generalized section.
Wherein, the corresponding parts title is marked to be in accompanying drawing：1- bodies of heater, 2- smoke inlets, 3- vertical gas passes, the middle temperature mistakes of 4-
Hot device, 5- low temperature superheaters, the evaporimeters of 6- first, the evaporimeters of 7- second, the evaporimeters of 8- the 3rd, the economizers of 9- first, 10- second
Economizer, 11- removes oxygen evaporator, 12- outlet flues, 13- drums, 14- upper collecting chambers, 15- lower headers, 16- carbonated drink connecting tubes, 17-
Common downcomer, 18- distribution pipes, 19- body of heater ash buckets, 20- scraper slag removing machines, the outlet of 21- rotary kilns, 22- water-cooling sedimentations room,
23- high temperature superheaters, 24- expansion chamber ash buckets, 25- water cooling smoke baffle plates, 26- expansion chamber outlet flues, 27- connection flues, 28- machines
Tool rapping apparatus, 29- explosion deashing devices, 30- oxygen-eliminating devices, 31- body of heater gas baffles, 32- ash discharging holes, 33- flute profile heating surfaces
Pipe group.
Specific embodiment
With reference to the accompanying drawings and examples the utility model is described in further detail, and embodiment of the present utility model includes
But it is not limited to the following example.
Embodiment
As shown in Figures 1 to 3, energy-saving dedusting horizontal revolving kiln waste heat boiler, including the stove with smoke inlet 2 and outlet flue 12
Body 1, and the water-cooling sedimentation room 22 connected with the smoke inlet of body of heater；The water-cooling sedimentation ceiling portion is provided with high temperature superheater 23,
And the water cooling smoke baffle plate 25 of water-cooling sedimentation chamber interior is arranged at, water-cooling sedimentation room bottom is provided with expansion chamber ash bucket 24；
The body of heater top is additionally provided with the drum 13 outside body of heater, and the bottom of furnace body is provided with body of heater ash bucket 19.
The utility model can make flue gas first pass through water-cooling sedimentation room, and water-cooling sedimentation room carries out preliminary treatment to flue gas, main
If by gravitational settling dedusting, reducing a large amount of dust and bringing in flue below, flue blockage is reduced, it is follow-up so as to facilitate
Operation.
Specifically, water-cooling sedimentation room one end is connected with rotary kiln outlet 21, and the other end passes through expansion chamber exhanst gas outlet
26 connect with body of heater；The expansion chamber exhanst gas outlet is connected by connection flue 27 with the smoke inlet of body of heater.The water-cooling sedimentation
Room adopts film water cold wall structure.Wherein, water-cooling sedimentation room is big cavity, and flue gas flow rate is relatively low, is easy to dust settling, while
The heat in flue gas is absorbed, rotary kiln outlet is directly flushed on the water cooling smoke baffle plate in water-cooling sedimentation room and expansion chamber outlet flue
Go out flue gas upwards, force flue gas to turn to, due to Action of Gravity Field by dust settling in flue gas in expansion chamber ash bucket, reach dedusting
Effect, reduces fouling of heating surface below；Because the flue-gas temperature for entering medium temperature overheater is relatively low, arrange high in water-cooling sedimentation ceiling portion
Warm superheater, is prevented from superheater outlet vapor (steam) temperature and does not reach setting value, can better ensure that superheater outlet steam
Temperature, improve generating efficiency, while also sealing to water-cooling sedimentation ceiling portion.
Specifically, the vertical gas pass 3 being provided with the body of heater below smoke inlet, and be arranged in body of heater with it is vertical
The horizontal flue that flue is communicated；Be sequentially provided with the horizontal flue medium temperature overheater 4, low temperature superheater 5, the first evaporimeter 6,
Second evaporimeter 7, the 3rd evaporimeter 8, the first economizer 9, the second economizer 10 and except oxygen evaporator 11；The medium temperature overheater
It is described except oxygen evaporator is near outlet flue near vertical gas pass；The drum respectively with water-cooling sedimentation room, the first evaporimeter,
Two evaporimeters, the 3rd evaporimeter are connected；It is described except oxygen evaporator is connected with the oxygen-eliminating device 30 being arranged at outside body of heater.Wherein, institute
State the first evaporimeter, the second evaporimeter, the 3rd evaporimeter to be constituted by some flute profile heating surface tube groups 33.The flute profile is heated
Facial canal group is made up of intake header, heating surface tube water outlet header and flute profile heating surface tube of heating surface tube；The heating surface tube water inlet
Header is connected with lower header, and the heating surface tube water outlet header is connected with upper collecting chamber；Flue gas can be allowed using flute profile heating surface tube
Transversal flow heating surface, improves heat transfer efficiency.
In order to improve above-mentioned evaporimeter heating surface flue gas flow rate, flute profile heating surface tube pitch ratio in first evaporimeter
Two evaporimeters are big, and the 3rd evaporimeter of flute profile heating surface tube pitch ratio is big in the second evaporimeter.Biography can be improved by above-mentioned setting
The thermal efficiency, reduces heating surface steel consumption amount.Above-mentioned evaporimeter top is also using steel plate sealing, easy access and cleaning heating surface
Upper dust stratification, sealing steel plate is connected on the wall of side, prevents thermal expansion.It is additionally provided with inspection manhole between above-mentioned evaporimeter simultaneously and leads to
Road, is overhauled in order to staff.
Specifically, the water-cooling sedimentation room, the first evaporimeter, the second evaporimeter, the top of the 3rd evaporimeter pass through respectively
The upper collecting chamber 14 that is sequentially communicated, carbonated drink connecting tube 16 are connected with drum；The water-cooling sedimentation room, the first evaporimeter, the second evaporation
Device, the bottom of the 3rd evaporimeter are connected respectively by the lower header 15 that is sequentially communicated, distribution pipe 18 with drum；The body of heater passes through
Common downcomer 17 is connected with distribution pipe.Can realize circulating respectively by above-mentioned setting, it is to avoid occur affecting between each part.
Specifically, it is described to be connected by being arranged at the upper collecting chamber 14, carbonated drink above except oxygen evaporator except oxygen evaporator top
Pipe 16 is connected with oxygen-eliminating device, and the deoxygenation base of evaporator passes through to be arranged at lower header 15 and the oxygen-eliminating device below except oxygen evaporator
Connection.By above-mentioned setting, make except oxygen evaporator forms an independent low pressure water circulation system with oxygen-eliminating device, by deaerated water
The cool water heating to 104 DEG C that pumping comes simultaneously deoxygenation, deaerated water is then sent through in drum by feed pump.
In order to remove dust stratification on heating surface, the body of heater medium temperature overheater, low temperature superheater, the first evaporimeter, second are steamed
Send out device, the 3rd evaporimeter, the first economizer, the second economizer and the top except oxygen evaporator, side to be equipped with installed in body of heater
On explosion deashing device 29；First economizer, the second economizer and except oxygen evaporator adopt snakelike tubular construction, be suspended on
Body of heater top, both walls are film water cold wall structure.By above-mentioned setting such that it is able to rely on gravity principle, ash-removal effect is good,
Boiler surrounding volume is not accounted for, fouling of heating surface is reduced.
In order to prevent water-cooling sedimentation room dust stratification, prevent flue dust to be adhered on inboard wall of furnace body, prevent flue blockage, the water-cooled
Mechanical shaking device 28 is additionally provided with outside expansion chamber.
Specifically, the body of heater ash bucket and expansion chamber ash bucket are divided into multiple ash buckets, and are all provided with below each ash bucket
There is ash discharging hole 32, the body of heater ash bucket top is additionally provided with body of heater gas baffle 31；The body of heater ash bucket and expansion chamber ash bucket lower section
It is provided with scraper slag removing machine 20.By arranging body of heater gas baffle, flue gas shunting can be prevented and heat exchange efficiency is reduced, be worth explanation
It is that each evaporimeter lower section has an ash bucket, also there is an ash bucket certain medium temperature overheater and low temperature superheater lower section.Simultaneously
Due to being provided with scraper slag removing machine, next process can be input to the lime-ash discharged.
What deserves to be explained is, at the top of above-mentioned superheater, evaporimeter, economizer and deoxygenation steaming device and side arrangement explosion is clear
Ash, first and second economizer and except oxygen evaporator adopt snakelike tubular construction, be suspended on ceiling, be easy to preferably remove heating surface
On dust stratification, reduce flue blockage, have the advantages that failure is few, service life is longer.And the utility model can also be user
The superheated steam of high-quality, improve generating efficiency are provided.Wherein, the superheated steam of high-quality：Therefore system flue-gas temperature is unstable simultaneously
Low, flue dust adhesive property is strong, and traditional design can not design superheater, can only produce saturated vapor, by this kind of technical scheme boiler
The stable superheated steam pressure and temperature of design can be reached, improve generating efficiency meets user's economic stability and reliably
Ask.
The course of work of the present utility model：500～650 DEG C or so of flue gas enters water-cooling sedimentation room by rotary kiln outlet,
Flue gas is exchanged heat by radiation, convection current and fin panel casing, and partial fume dust is directly flushed on water cooling smoke baffle plate, flue gas
Turn to, mine dust particle heavier in flue gas falls directly into ash bucket；Big cavity flue gas are designed using low flow velocity, are easy to ore deposit
Dirt particle is settled；Because water-cooling sedimentation room flue-gas temperature is higher, in water-cooling sedimentation room top layout high temperature superheater, it is easy to ensure
Superheater outlet vapor (steam) temperature；Water-cooling sedimentation room exhaust pass enters body of heater smoke inlet by connecting flue, is entered by smoke inlet and is hung down
Straight flue, flue gas is exchanged heat by radiation, convection current and fin panel casing, and mine dust particle heavier in flue gas falls directly into ash
Bucket；Big cavity vertical gas pass flue gas is designed using low flow velocity, is easy to mine dust particle to settle；The flue gas for dropping to 450 DEG C or so is entered
Horizontal flue, mine dust therein receives Action of Gravity Field, gradually falls in ash bucket, reaches further dustproof function, flue gas first laterally punching
In brush horizontal flue, low temperature superheater, in, low temperature superheater pipe be provided with resistant to elevated temperatures wearing-resistant tile windward, can reduce
Hot device pipe abrasion.Drop to 400 DEG C or so flue gas enter first, second and third section of evaporimeter of horizontal flue, first and second economizer and
Except oxygen evaporator, the horizontal punching groove shaped heating surface tube of flue gas carries out heat exchange, and every section of heating surface is designed using variable flow cross-section, carried
High heat transfer efficiency, so as to improve the utilization rate of steel, flue-gas temperature is finally down to 180 DEG C or so, from exhanst gas outlet discharge into
Enter next process.Flue gas mean flow rate in 8m/s or so, with itself deashing make by sweep of gases heating surface in horizontal flue
With.
According to above-described embodiment, the utility model just can be well realized.What deserves to be explained is, based on said structure design
On the premise of, it is to solve same technical problem, even if some made on the utility model are without substantial change or profit
Color, the essence of the technical scheme for being adopted is still as the utility model, therefore it should also be as in protection model of the present utility model
In enclosing.
Claims (10)
1. a kind of energy-saving dedusting horizontal revolving kiln waste heat boiler, it is characterised in that include with smoke inlet（2）And outlet flue（12）
Body of heater（1）, and the water-cooling sedimentation room connected with the smoke inlet of body of heater（22）；The water-cooling sedimentation ceiling portion is provided with high temperature mistake
Hot device（23）, and the water cooling smoke baffle plate for being arranged at water-cooling sedimentation chamber interior（25）, water-cooling sedimentation room bottom is provided with heavy
Drop room ash bucket（24）；The body of heater top is additionally provided with the drum outside body of heater（13）, it is grey that the bottom of furnace body is provided with body of heater
Bucket（19）.
2. energy-saving dedusting horizontal revolving kiln waste heat boiler according to claim 1, it is characterised in that the water-cooling sedimentation room
One end exports with rotary kiln（21）It is connected, the other end passes through expansion chamber exhanst gas outlet（26）Connect with body of heater；The expansion chamber cigarette
Gas outlet is by connecting flue（27）It is connected with the smoke inlet of body of heater.
3. energy-saving dedusting horizontal revolving kiln waste heat boiler according to claim 1, it is characterised in that be provided with the body of heater
Vertical gas pass below smoke inlet（3）, and it is arranged at the horizontal flue communicated with vertical gas pass in body of heater；The level
Medium temperature overheater is sequentially provided with flue（4）, low temperature superheater（5）, the first evaporimeter（6）, the second evaporimeter（7）, the 3rd steam
Send out device（8）, the first economizer（9）, the second economizer（10）With except oxygen evaporator（11）；The medium temperature overheater is near vertical cigarette
Road, it is described except oxygen evaporator is near outlet flue；The drum respectively with water-cooling sedimentation room, the first evaporimeter, the second evaporimeter,
Three evaporimeters are connected；It is described except oxygen evaporator and the oxygen-eliminating device being arranged at outside body of heater（30）It is connected.
4. energy-saving dedusting horizontal revolving kiln waste heat boiler according to claim 3, it is characterised in that the water-cooling sedimentation
Room, the first evaporimeter, the second evaporimeter, the top of the 3rd evaporimeter pass through respectively the upper collecting chamber being sequentially communicated（14）, carbonated drink connect
Adapter（16）Connect with drum；The water-cooling sedimentation room, the first evaporimeter, the second evaporimeter, the bottom difference of the 3rd evaporimeter
By the lower header being sequentially communicated（15）, distribution pipe（18）Connect with drum.
5. energy-saving dedusting horizontal revolving kiln waste heat boiler according to claim 4, it is characterised in that the body of heater is by collection
Middle down-comer（17）Connect with distribution pipe.
6. energy-saving dedusting horizontal revolving kiln waste heat boiler according to claim 3, it is characterised in that described except oxygen evaporator
Top passes through to be arranged at the upper collecting chamber above except oxygen evaporator（14）, carbonated drink connecting tube（16）Connect with oxygen-eliminating device, the deoxygenation
Base of evaporator passes through to be arranged at the lower header below except oxygen evaporator（15）Connect with oxygen-eliminating device.
7. energy-saving dedusting horizontal revolving kiln waste heat boiler according to claim 3, it is characterised in that the middle temperature mistake of the body of heater
Hot device, low temperature superheater, the first evaporimeter, the second evaporimeter, the 3rd evaporimeter, the first economizer, the second economizer and deoxygenation
The top of evaporimeter, side are equipped with the explosion deashing device on body of heater（29）.
8. energy-saving dedusting horizontal revolving kiln waste heat boiler according to claim 3, it is characterised in that first evaporation
Device, the second evaporimeter, the 3rd evaporimeter are by some flute profile heating surface tube groups（33）Composition.
9. energy-saving dedusting horizontal revolving kiln waste heat boiler according to claim 1, it is characterised in that the water-cooling sedimentation room
Outside is additionally provided with mechanical shaking device（28）.
10. the energy-saving dedusting horizontal revolving kiln waste heat boiler according to any one of claim 1～9, it is characterised in that described
Body of heater ash bucket and expansion chamber ash bucket are divided into multiple ash buckets, and are equipped with ash discharging hole below each ash bucket（32）, the stove
Body ash bucket top is additionally provided with body of heater gas baffle（31）；The body of heater ash bucket and expansion chamber ash bucket lower section are provided with scraper slag removing machine
（20）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621099925.7U CN206112887U (en) | 2016-09-30 | 2016-09-30 | Energy -conserving horizontal rotary kiln waste heat boiler that removes dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621099925.7U CN206112887U (en) | 2016-09-30 | 2016-09-30 | Energy -conserving horizontal rotary kiln waste heat boiler that removes dust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206112887U true CN206112887U (en) | 2017-04-19 |
Family
ID=58521166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621099925.7U Withdrawn - After Issue CN206112887U (en) | 2016-09-30 | 2016-09-30 | Energy -conserving horizontal rotary kiln waste heat boiler that removes dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206112887U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287631A (en) * | 2016-09-30 | 2017-01-04 | 四川东华锅炉工程技术有限公司 | Energy-saving dedusting horizontal revolving kiln waste heat boiler |
| CN107543137A (en) * | 2017-08-15 | 2018-01-05 | 中冶华天工程技术有限公司 | A kind of waste gas residual heat boiler and utilize its deoxidation method |
-
2016
- 2016-09-30 CN CN201621099925.7U patent/CN206112887U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287631A (en) * | 2016-09-30 | 2017-01-04 | 四川东华锅炉工程技术有限公司 | Energy-saving dedusting horizontal revolving kiln waste heat boiler |
| CN106287631B (en) * | 2016-09-30 | 2019-03-19 | 四川东华锅炉工程技术有限公司 | Energy-saving dedusting horizontal revolving kiln waste heat boiler |
| CN107543137A (en) * | 2017-08-15 | 2018-01-05 | 中冶华天工程技术有限公司 | A kind of waste gas residual heat boiler and utilize its deoxidation method |
| CN107543137B (en) * | 2017-08-15 | 2019-09-17 | 中冶华天工程技术有限公司 | A kind of waste gas residual heat boiler and the deoxidation method using it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170419 Effective date of abandoning: 20190319 |
|
| AV01 | Patent right actively abandoned |