CN107965788A - Double heat source air preheaters block controlling device - Google Patents
Double heat source air preheaters block controlling device Download PDFInfo
- Publication number
- CN107965788A CN107965788A CN201711112600.7A CN201711112600A CN107965788A CN 107965788 A CN107965788 A CN 107965788A CN 201711112600 A CN201711112600 A CN 201711112600A CN 107965788 A CN107965788 A CN 107965788A
- Authority
- CN
- China
- Prior art keywords
- air
- flue
- air preheater
- wind cabin
- wind
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 241000276425 Xiphophorus maculatus Species 0.000 claims abstract description 5
- 230000001172 regenerating effect Effects 0.000 claims description 4
- 239000000567 combustion gas Substances 0.000 claims description 3
- 210000003298 dental enamel Anatomy 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 16
- 238000000034 method Methods 0.000 description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 11
- 239000003546 flue gas Substances 0.000 description 11
- 229910021529 ammonia Inorganic materials 0.000 description 8
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000005713 exacerbation Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/02—Arrangements of regenerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Supply (AREA)
Abstract
Double heat source air preheaters of the invention block controlling device and are related to boiler technology field.Using " adding wind cabin " key technology, economizer, air preheater, wind cabin are provided with a manner of top-down in its flue, its A air door, heater, the straight-through end at threeway both ends, the wind cabin in flue are fixedly connected by pipeline, the central exit end of its threeway, wind turbine, B air doors, the upper end section of flue are fixedly connected by pipeline, its wind cabin is fan-shaped shutter platy structure.Blocked for administering air preheater.Design is scientific and reasonable, simple and ingenious structure, simple for use, effect stability reliably, easily make and cost is low.
Description
Technical field
Double heat source air preheaters of the invention block controlling device, are related to boiler technology field.
Background technology
With the popularization of rotary regenerative air preheater, air preheater, which blocks up ash, becomes each high-power station's common problem.It is empty pre-
Device blocks up ash and refers to, flue ash content is accumulated on air preheater heat accumulation plate, blocks heat accumulation plate gap.The clogging phenomenon of air preheater
Boiler operating efficiency is seriously affected, or even influences the safe operation of boiler.The clogging phenomenon of air preheater is in particular in windage
Greatly, power consumption height, deficiency in draught, influence boiler output, influence heat exchange, reduction boiler operating efficiency, exacerbation burn into influence use the longevity
The many hazards such as life, blast wandering big, influence boiler safety burns, pressure difference increase, inleakage increase.Particularly power industry
After " ultralow row " transformation, the sulfur trioxide reaction generation hydrogen sulfate ammonia in the ammonia and flue gas of denitrating system escape, and in air preheater
Cold section of deposition, causes air preheater to block even more serious.At present, also without the mature and reliable method and dress for solving air preheater blocking
Put.
Professional knowledge based on inventor and working experience and the unremitting pursuit to cause, conscientiously investigate, analyze,
Solution, summarize, on the basis of research air preheater plugging reason, and creative takes " adding wind cabin " key technology, has succeeded in developing " double
The new equipment of heat source air preheater blocking controlling device ".The present invention's succeeds in developing, and effectively solves the technology of air preheater blocking
Difficulty, effectively raises the technical merit of the industry.
The content of the invention
The present invention takes " adding wind cabin " key technology, and economizer, sky are provided with a manner of top-down in its flue
Pre- device, wind cabin, its A air door, heater, the straight-through end at threeway both ends, the wind cabin in flue are fixedly connected by pipeline, its threeway
Central exit end, wind turbine, B air doors, the upper end section of flue be fixedly connected by pipeline, its wind cabin is fan-shaped shutter tabular knot
Structure.
It is by the purpose of the invention reached：1., the present invention take " adding wind cabin " key technology, there is provided " double heat sources
The new equipment of air preheater blocking controlling device ".2., the present invention take " adding wind cabin " key technology and using duct insert heater,
The effect of flue, A air doors, B air doors, wind turbine, there is provided " double heat sources " administers the method that air preheater blocks.3., the present invention set
Count scientific and reasonable, simple and ingenious structure, convenient to use, effect stability is reliable.4., the present invention have it is scientific, advanced,
Novelty, accuracy, representativeness, practicality, have filled up and have administered the blank that air preheater blocks special purpose device and method.5., this hair
Bright heater is the advanced technology applied for a patent, other each components are conventional known technology, have convenient system
Make and the low beneficial effect of cost.Meanwhile the present invention also has the low beneficial effect of operation cost.6., the present invention be developed into
Work(, has effectively brought up to the technical merit of the industry, can wide popularization and application.
To achieve the above object, technical solution provided by the invention is：
A kind of double heat source air preheaters block controlling device, by flue, A air doors, heater, wind cabin, air preheater, economizer, B wind
Door, wind turbine are formed；
The double heat source air preheaters block controlling device, be provided with its flue in a manner of top-down economizer, air preheater,
Wind cabin, its A air door, heater, the straight-through end at threeway both ends, the wind cabin in the flue are fixedly connected by pipeline, its
The central exit end of the threeway, wind turbine, B air doors, the upper end section of the flue are fixedly connected by pipeline, its described wind cabin is
Fan-shaped shutter platy structure.
Double heat source air preheaters block controlling device, and the flue is the tubular structure of L-shaped, the A air doors, B wind
Door is valve shape structure, and the heater, that is, duct insert heater, be that combustion gas and fuel vapor gun shape structure, the air preheater are back
Rotary air preheater, be to be provided with the structure that heat accumulating element enamel piece is provided with the round tray of central shaft, province's coal
Device is the coil-like structure with heat exchange function, and the wind turbine is high-temperature centrifugal fan shape structure.
Double heat source air preheaters block controlling device, and the air preheater set in the flue is flue and air preheater
Central shaft rotates connection living by bearing.
Double heat source air preheaters block controlling device, and the economizer set in the flue and wind cabin for flue and save
Coal device and wind cabin are fixedly connected with.
The present invention operation principle and the course of work be：As shown in Figure of description 1, operation principle of the invention and work
Process is extremely simple to be understood, the present invention has given full play to the effect of " adding wind cabin " key technology.
For the ease of deep understanding, the reason for being blocked from air preheater, talks about.The reason for air preheater blocks can be determined as
Because of the sulfur trioxide reaction generation hydrogen sulfate ammonia in the ammonia and flue gas of denitrating system escape and in cold section of air preheater deposition, cause
Air preheater blocks.Chemical examination to air preheater tamper shows that more than 30% is hydrogen sulfate ammonia, since the dew point of hydrogen sulfate ammonia is 147
DEG C, present heavy duty boiler rotary regenerative air heater exit gas temperature is generally 125 DEG C or so.Thus, it is inevitable in air preheater
Cold end produces hydrogen sulfate ammonia deposition.Flue gas is after SCR reactors and air preheater hot arc, and exhaust gas temperature reduces, when temperature is down to
At less than 185 DEG C, the gaseous sulfuric acid hydrogen ammonia that has been generated in flue gas can solidify on the heat accumulating element of cold section of air preheater, cause
Cold section of salification of air preheater and fouling, and then influence the normal operation of air preheater.When the escape amount of ammonia is below 1 μ L/L, sulfuric acid
Hydrogen ammonia growing amount is seldom, air preheater clogging unobvious.If amount of ammonia slip increase to 2 μ L/L, air preheater operation half a year after its
About 30 % of resistance increase；If amount of ammonia slip increases to 3 μ L/L, about 50 % of resistance increase after air preheater operation half a year, to air-introduced machine
It will also result in considerable influence.
The present invention adds wind cabin in the position of air preheater cold end lowest temperature phase, the heat pair provided using duct insert heater
The cold end heat accumulating element that fume side will be entered is heated, wind turbine extracting high-temperature out of flue above economizer can also be used
The heat of flue gas, improves the low temperature condensation of air preheater, slows down the speed of dust stratification.If a little acid is condensed on the heat storage plate of air preheater
Dew, the hot wind after wind cabin enter air preheater high temperature side, and the acid dew on surface is evaporated and carried away by hot wind.Here it is the present invention
Described use " the adding wind cabin " key technology.
The present invention is based on the wind cabin using setting and is being aided with duct insert heater, flue, A air doors, B air doors, wind
Under the action of machine, air preheater is blocked and implements what double heat sources were administered.After air preheater, which blocks, to be occurred, the side that air preheater blocks is solved
Method is exactly based on " adding wind cabin " key technology, using the method for double heat sources：, duct insert heater heat resource method：Open A wind
Door, closes B air doors, and cold wind is heated using duct insert heater, obtains being passed through after hot wind the wind cabin of setting, empty pre- using Hot-blast Heating
Heat accumulating element on device, though make heat accumulating element surface temperature be heated to more than 185 DEG C, heat accumulating element surface temperature exceed sulfuric acid
The dew-point temperature of hydrogen ammonia.After the heat accumulating element heating of air preheater, heat accumulating element just make what it carried above to occur with solid state
Hydrogen sulfate ammonia tamper exceed dew-point temperature, heat accumulating element drives backspin to go to economizer high-temperature flue gas side in air preheater, stores
Thermal element is now entrained to be changed into the hydrogen sulfate ammonia of gas from solid plug, is just carried by high-temperature flue gas more than dew-point temperature
Walk, so far, the blocking of air preheater is just administered., flue gas heat resource method：If air preheater blocks serious, it is necessary to when long
Between start duct insert heater, so heat energy consumption it is higher, flue gas heat resource method can be taken at this time.I.e.：Close A air doors, beat
Open B air doors, using wind turbine out of flue above economizer extracting high-temperature flue gas, be passed directly into wind cabin, utilize the hot wind of wind cabin
The heat accumulating element on air preheater is heated, can equally play the role of evaporating hydrogen sulfate ammonia.Here it is " double heat of the present invention
Source " air preheater, which blocks, to be administered.
Design is scientific and reasonable by the present invention, simple and ingenious structure, is easy to low manufacture cost, and using effect is reliable and stable, fills out
Mend and administered the blank that air preheater blocks special purpose device, there is provided administered the method that air preheater blocks, solve air preheater blocking
Technology it is difficult, effectively brought up to the technical merit of the industry.
As a result of technical solution provided by the present invention；Since this invention takes " adding wind cabin " key technology；
Due to described in the operation principle and the course of work of the present invention；Due to being provided with province in a manner of top-down in its flue of the invention
Coal device, air preheater, wind cabin, its A air door, heater, the straight-through end at threeway both ends, the wind cabin in flue are fixed by pipeline to be connected
Connect, the central exit end of its threeway, wind turbine, B air doors, the upper end section of flue are fixedly connected by pipeline, its wind cabin is sector hundred
Leaf window platy structure.So that it is of the invention with existing known technology compared with present situation, the beneficial effect of acquisition is：
1st, the present invention takes " adding wind cabin " key technology, so as to provide the new clothes of " double heat source air preheaters block controlling device "
Put.
2nd, the present invention takes " adding wind cabin " key technology and utilizes duct insert heater, flue, A air doors, B air doors, wind turbine
Effect, there is provided " double heat sources " administer air preheater block method.
3rd, the heat accumulating element heat source source mode in the present invention on air preheater can be carried by economizer inlet flue gas
For, can also be provided by heater.
4th, the structure type of wind cabin of the present invention, can provide uniform heating hot wind, and not increase air preheater running resistance.
5th, design is scientific and reasonable, simple and ingenious structure, convenient to use, effect stability is reliable by the present invention.
6th, the present invention has science, advance, novelty, accuracy, representativeness, practicality, and it is empty pre- to have filled up improvement
Device blocks the blank of special purpose device and method.
7th, heater of the invention is the advanced technology applied for a patent, other each components are conventional existing known skill
Art, has the convenient beneficial effect made and cost is low.
8th, the present invention has the low beneficial effect of operation cost.
9th, of the invention to succeed in developing, it is difficult to solve the technology of air preheater blocking, has effectively brought up to the industry
Technical merit, can wide popularization and application.
Brief description of the drawings
Fig. 1 is the schematic diagram of the specific embodiment of the invention.
Label in figure：1st, A air doors, 2, heater, 3, wind cabin, 4, air preheater, 5, economizer, 6, B air doors, 7, wind turbine.
Embodiment
With reference to Figure of description, the present invention is described in detail.As shown in Figure of description 1：
A kind of double heat source air preheaters block controlling device, by flue, A air doors 1, heater 2, wind cabin 3, air preheater 4, economizer 5,
B air doors 6, wind turbine 7 are formed；
Double heat source air preheaters block controlling device, and economizer 5, air preheater are provided with a manner of top-down in its flue
4th, wind cabin 3, its A air door 1, heater 2, the straight-through end at threeway both ends, the wind cabin 3 in the flue are fixed by pipeline to be connected
Connect, the central exit end of its threeway, wind turbine 7, B air doors 6, the upper end section of the flue are fixedly connected by pipeline, its institute
It is fan-shaped shutter platy structure to state wind cabin 3.
Double heat source air preheaters block controlling device, and the flue is the tubular structure of L-shaped, the A air doors 1, B wind
Door 6 is valve shape structure, and the heater 2 is duct insert heater, is combustion gas and fuel vapor gun shape structure, the air preheater 4
I.e. rotary regenerative air preheater, to be provided with structure that heat accumulating element enamel piece is provided with the round tray of central shaft, it is described
Economizer 5 is the coil-like structure with heat exchange function, and the wind turbine 7 is high-temperature centrifugal fan shape structure.
Double heat source air preheaters block controlling device, and the air preheater 4 set in the flue is flue and air preheater 4
Central shaft pass through bearing and rotate connection living.
Double heat source air preheaters block controlling device, the economizer 5 set in the flue and wind cabin 3 for flue with
Economizer 5 and wind cabin 3 are fixedly connected with.
The foregoing is merely presently preferred embodiments of the present invention, not makees limitation in any form to the present invention；All one's own professions
The those of ordinary skill of industry, can be shown in by specification attached drawing and described above and swimmingly implement the present invention；But do not departing from
Technical solution of the present invention and the equivalent variations for making differentiation, are the equivalent embodiment of the present invention, still fall within protection of the present invention
Technical solution.
Claims (4)
1. a kind of double heat source air preheaters block controlling device, it is characterised in that：By flue, A air doors（1）, heater（2）, wind cabin
（3）, air preheater（4）, economizer（5）, B air doors（6）, wind turbine（7）Form；
Double heat source air preheaters block controlling device, and economizer is provided with a manner of top-down in its flue（5）, it is empty pre-
Device（4）, wind cabin（3）, its A air door（1）, heater（2）, the straight-through end at threeway both ends, the wind cabin in the flue（3）
It is fixedly connected by pipeline, the central exit end of its threeway, wind turbine（7）, B air doors（6）, the flue upper end section by pipe
Road is fixedly connected, its described wind cabin（3）For fan-shaped shutter platy structure.
2. double heat source air preheaters according to claim 1 block controlling device, it is characterised in that：The flue is L-shaped
Tubular structure, the A air doors（1）, B air doors（6）It is valve shape structure, the heater（2）I.e. duct insert heater, be combustion gas
And fuel vapor gun shape structure, the air preheater（4）I.e. rotary regenerative air preheater, set to be provided with the round tray of central shaft
It is equipped with the structure of heat accumulating element enamel piece, the economizer（5）For the coil-like structure with heat exchange function, the wind turbine（7）
For high-temperature centrifugal fan shape structure.
3. double heat source air preheaters according to claim 1 block controlling device, it is characterised in that：Set in the flue
Air preheater（4）For flue and air preheater（4）Central shaft pass through bearing and rotate connection living.
4. double heat source air preheaters according to claim 1 block controlling device, it is characterised in that：Set in the flue
Economizer（5）And wind cabin（3）For flue and economizer（5）And wind cabin（3）It is fixedly connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711112600.7A CN107965788A (en) | 2017-11-13 | 2017-11-13 | Double heat source air preheaters block controlling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711112600.7A CN107965788A (en) | 2017-11-13 | 2017-11-13 | Double heat source air preheaters block controlling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107965788A true CN107965788A (en) | 2018-04-27 |
Family
ID=62001005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711112600.7A Pending CN107965788A (en) | 2017-11-13 | 2017-11-13 | Double heat source air preheaters block controlling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107965788A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002357397A (en) * | 2001-05-31 | 2002-12-13 | Takuma Co Ltd | Heat exchanger with warm air heater |
| CN201992682U (en) * | 2011-03-02 | 2011-09-28 | 张玉伟 | Cold end heat-accumulating plate corrosion resistant system for rotary air preheater |
| CN102287847A (en) * | 2010-06-14 | 2011-12-21 | 阿尔斯托姆科技有限公司 | Regenerative air preheater design to reduce cold end fouling |
| CN204438069U (en) * | 2015-01-07 | 2015-07-01 | 西安热工研究院有限公司 | The low-lying level of exhaust heat stepped utilization is drawn gas indirect steam air heater system |
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| CN206469284U (en) * | 2017-02-06 | 2017-09-05 | 福建省环境工程有限公司 | It is a kind of to prevent the device of low-temperature corrosion of air preheater |
| CN107191963A (en) * | 2017-07-10 | 2017-09-22 | 东方电气集团东方锅炉股份有限公司 | A kind of method that rotary regenerative air preheater and the anti-ammonium hydrogen sulfate of the rotary regenerative air preheater are blocked |
| CN207648843U (en) * | 2017-11-13 | 2018-07-24 | 湖南大唐节能科技有限公司 | Double heat source air preheaters block controlling device |
-
2017
- 2017-11-13 CN CN201711112600.7A patent/CN107965788A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002357397A (en) * | 2001-05-31 | 2002-12-13 | Takuma Co Ltd | Heat exchanger with warm air heater |
| CN102287847A (en) * | 2010-06-14 | 2011-12-21 | 阿尔斯托姆科技有限公司 | Regenerative air preheater design to reduce cold end fouling |
| CN201992682U (en) * | 2011-03-02 | 2011-09-28 | 张玉伟 | Cold end heat-accumulating plate corrosion resistant system for rotary air preheater |
| CN204438069U (en) * | 2015-01-07 | 2015-07-01 | 西安热工研究院有限公司 | The low-lying level of exhaust heat stepped utilization is drawn gas indirect steam air heater system |
| CN104949149A (en) * | 2015-06-29 | 2015-09-30 | 南京博沃科技发展有限公司 | A method and system for synergistic sealing of anti-clogging ash of rotary air preheater |
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| CN204943550U (en) * | 2015-09-25 | 2016-01-06 | 安徽新力电业科技咨询有限责任公司 | A kind of coal-burning power plant's rotary regenerative air heater of improvement |
| CN205535924U (en) * | 2016-03-11 | 2016-08-31 | 华电电力科学研究院 | Rotation air preheater flue gas prevents against current that ammonium hydrogen sulfate blocks up device |
| CN105864817A (en) * | 2016-05-06 | 2016-08-17 | 华电电力科学研究院 | System and method for preventing AH blockage and heat exchange surface corrosion by hot secondary air supercharged countercurrent |
| CN206469284U (en) * | 2017-02-06 | 2017-09-05 | 福建省环境工程有限公司 | It is a kind of to prevent the device of low-temperature corrosion of air preheater |
| CN107191963A (en) * | 2017-07-10 | 2017-09-22 | 东方电气集团东方锅炉股份有限公司 | A kind of method that rotary regenerative air preheater and the anti-ammonium hydrogen sulfate of the rotary regenerative air preheater are blocked |
| CN207648843U (en) * | 2017-11-13 | 2018-07-24 | 湖南大唐节能科技有限公司 | Double heat source air preheaters block controlling device |
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Application publication date: 20180427 |