CN107726355A - Rotary regenerative air preheater and its First air side subtract the obstruction-proof method that leaks out - Google Patents
Rotary regenerative air preheater and its First air side subtract the obstruction-proof method that leaks out Download PDFInfo
- Publication number
- CN107726355A CN107726355A CN201710811400.4A CN201710811400A CN107726355A CN 107726355 A CN107726355 A CN 107726355A CN 201710811400 A CN201710811400 A CN 201710811400A CN 107726355 A CN107726355 A CN 107726355A
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- Prior art keywords
- air
- heating compartment
- flue gas
- rotary regenerative
- air preheater
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- 230000001172 regenerating effect Effects 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 68
- 239000003546 flue gas Substances 0.000 claims abstract description 62
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000007789 gas Substances 0.000 claims abstract description 31
- 238000013459 approach Methods 0.000 claims abstract description 24
- 238000013021 overheating Methods 0.000 claims abstract description 11
- 239000000428 dust Substances 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 239000003517 fume Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 208000011580 syndromic disease Diseases 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/006—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for regenerative heat-exchange apparatus
-
- 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
The rotary regenerative air preheater and its First air side of the present invention subtracts the obstruction-proof method that leaks out, wherein rotary regenerative air preheater includes chamber and rotor, flue gas storehouse, a wind cabin, secondary wind cabin are divided into chamber, the bottom of wind cabin sets sallop screen, wind cabin is separated out heating compartment by sallop screen, the air inlet of heating compartment connects gas approach air channel, and the flue gas for heating compartment is used for what the other parts by a wind cabin were rotated out of, will rotate the heat exchange element heating into flue gas storehouse.The method of the present invention heats using the flue gas higher than 300 degrees Celsius to the heat exchange element for turning over heating compartment.Technical scheme sets heating compartment in First air compartment, it is flue gas to heat medium in compartment, then entered in heating compartment by First air side leakage wind, in heating compartment to flue gas leak into for flue gas, rotary regenerative air preheater First air side Air Leakage can be thoroughly eliminated, rotary air preheater air leak rate is greatly lowered.
Description
Technical field
The present invention relates to technical field of heating, subtracts leakage more particularly to a kind of rotary regenerative air preheater and its First air side
Wind obstruction-proof method.
Background technology
Air preheater is exactly flue gas in boiler back end ductwork by the fin of inside by the air before entering boiler
The heating surface of certain temperature is preheating to, is a kind of to be used to improve the heat exchange performance of boiler, the equipment for reducing energy expenditure.Power station
Boiler is frequently with heating surface rotary preheater, application generally Liang Fencang, San Fencang, four warehouse separated types in the boiler, wherein
Four points of storehouses are more common in CFBB.
Rotary regenerative air preheater can slowly be rotated at work, and flue gas is arranged again after entering the fume side of air preheater
Go out, and the heat carried in flue gas can be absorbed by the fin in air preheater, air preheater slowly rotates afterwards, fin motion
To air side, then transfer heat into the air before boiler.
Because air preheater rotor constantly rotates in running, when heat accumulation plate turns to fume side temperature it is gradual on
Rise, hereafter heat accumulation plate air inlet side, be cooled in air side, temperature is gradually reduced.When accumulation of heat passes again to fume side,
Vapor and sulfuric acid in flue gas are condensed on cold end heat exchange element, adhere to ash content, and sulfuric acid occurs with the salt in iron and ash content
Chemical change, the ackd salt toughness of generation, aggravate dust stratification；On the other hand, it is more and more stricter with environment protection emission index, power station pot
Stove is configured with SCR denitration equipment, after air preheater upstream adds SCR denitration equipment, because the amount of ammonia in SCR is difficult to
Control, causes the escape of a part of ammonia, can generate (NH4) HSO4, (NH4) with the SO3 in flue gas and vapor reaction
HSO4 and the condensation binding ability on air preheater cold-end air heat exchange element are extremely strong, further aggravate air preheater heat exchange element
Superficial dust blocks.
Because air preheater blocks, cause air preheater fume side and air-side blockage to raise, so as to derive with
Lower problem：
(1) rise of air preheater resistance has a strong impact on the security of unit operation, and the non-occurrence probability that stops of unit greatly increases；
(2) rise of air preheater resistance causes air-introduced machine allowance deficiency to reduce unit on-load ability；
(3) primary air fan, pressure fan and the rise of air-introduced machine power consumption caused by the rise of air preheater resistance；
(4) air preheater, which blocks up ash, causes heat exchange element surface contamination to reduce air preheater exchange capability of heat；
(5) air preheater frequency of soot blowing, which improves, causes air preheater hot junction heat exchange element blow loss serious；
(6) air preheater cold end wall temperature is too low causes air preheater cold end heat exchange element to produce low-temperature corrosion problem；
(7) air preheater water, which rinses, causes air preheater cold end heat exchange element well damage, reduces service life of equipment.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of simple, practical, efficient rotary regenerative air preheater and its
First air side subtracts the obstruction-proof method that leaks out.
The rotary regenerative air preheater of the present invention, including chamber and it is rotationally arranged at the chamber interior center
Rotor, heat exchange element is provided with the rotor, it is fan-shaped flue gas storehouse, once to be divided into the chamber by multiple dividing plates
Wind cabin, secondary wind cabin, flue gas storehouse, a wind cabin, secondary wind cabin successively circumferentially around rotor arrange and it is adjacent with rotor, it is described
One time wind cabin is adjacent with secondary wind cabin, the First air of the bottom of a wind cabin enter it is intraoral set radially extend it is fan-shaped every
Wind cabin is separated out the heating compartment of sector, the Radius side of the heating compartment and the cigarette by plate, the sallop screen
Gas storehouse is adjacent, and the short arc side of the heating compartment is adjacent with the rotor, and the air inlet of the other parts of a wind cabin connects
Wind inlet air channel, the air inlet of the heating compartment connect gas approach air channel, and the flue gas of the heating compartment is used for turning
Cross the heat exchange element heating of heating compartment.
The rotary regenerative air preheater of the present invention, wherein, the air inlet of the heating compartment passes through bypass line cigarette receiving gas
Import air channel, the supercharging wind for the flue gas in gas approach air channel to be imported to the heating compartment is provided with bypass line
Machine.
The rotary regenerative air preheater of the present invention, wherein, it is provided with the heating compartment multiple for monitoring heat exchange member
The device for detecting temperature of part temperature, the multiple device for detecting temperature is radially arranged to be arranged in the heating compartment.
The rotary regenerative air preheater of the present invention, wherein, it is provided with the inlet flue duct of the booster fan for collecting
The ash bucket of dust, the surface of the blade of the booster fan are provided with carburized layer.
The rotary regenerative air preheater First air side of the present invention subtracts the obstruction-proof method that leaks out, including：
The heat exchange element for turning over heating compartment is heated using the flue gas in the gas approach air channel of rotary regenerative air preheater.
The rotary regenerative air preheater First air side of the present invention subtracts the obstruction-proof method that leaks out, wherein, it is described to utilize revolution
The flue gas in the gas approach air channel of regenerative air heater includes to the heat exchange element heating for turning over heating compartment：
Be separated out in a wind cabin heating compartment of sector using sallop screen, the Radius side of the heating compartment with
The flue gas storehouse is adjacent, and the short arc side of the heating compartment is adjacent with the rotor, and the other parts of a wind cabin are entered
Air port connects a wind inlet air channel, and the air inlet of the heating compartment connects gas approach air channel, by the height in gas approach air channel
The heating compartment is imported in 300 degrees Celsius of flue gases；
The heat exchange element for turning over heating compartment is heated using the flue gas of the heating compartment.
The rotary regenerative air preheater First air side of the present invention subtracts the obstruction-proof method that leaks out, wherein, in addition to：Utilize increasing
The flue gas higher than 300 degrees Celsius in gas approach air channel is imported the heating compartment by pressure fan, and the booster fan enters
The ash bucket for collecting dust is provided with mouth flue, regular ash discharge is carried out using cinerary device is automatically controlled.
The rotary regenerative air preheater First air side of the present invention subtracts the obstruction-proof method that leaks out, wherein, in addition to：It is pressurized wind
Machine uses VFC, the regulation of exhaust gas volumn is carried out by adjusting booster fan rotating speed, regulating degree is with temperature on heat exchange element
The temperature of monitoring device feedback makes the wall temperature of rotary regenerative air preheater cold end heat exchange element be maintained at set temperature value to instruct
More than.
The rotary regenerative air preheater First air side of the present invention subtracts the obstruction-proof method that leaks out, wherein, in addition to：Periodically adjust
The flue gas flow in gas approach air channel is saved to maximum flue gas flow, thermal element is exchanged by high velocity smoke and carries out purge operations, is protected
Hold heat exchange element clean surface.
Technical scheme set in First air compartment heating compartment, heat compartment in medium be flue gas, then by
First air side leakage wind enters in heating compartment, in heating compartment to flue gas leak into for flue gas, can thoroughly eliminate swinging sky
Air preheater First air side Air Leakage, is greatly lowered rotary air preheater air leak rate.
Brief description of the drawings
Fig. 1 is the structural representation of the rotary regenerative air preheater of the present invention；
Fig. 2 is the arrangement schematic diagram of the heating compartment of the rotary regenerative air preheater of the present invention.
Embodiment
As shown in Figure 1 and Figure 2, rotary regenerative air preheater of the invention, including chamber 1 and it is rotationally arranged at chamber
The rotor 2 at chamber interior center, heat exchange element is provided with rotor 2, it is fan-shaped flue gas to be divided into chamber 1 by multiple dividing plates
Storehouse 10, one times wind cabin 11, secondary wind cabin 12, flue gas storehouse 10, one times wind cabin 11, secondary wind cabin 12 are arranged circumferentially around rotor successively
And it is adjacent with rotor 2, one time wind cabin is adjacent with secondary wind cabin, and the First air of the bottom of a wind cabin enters intraoral setting and radially prolonged
Wind cabin 11 is separated out the heating compartment 20 of sector by the sallop screen 3 stretched, sallop screen 3, heats the short arc side of compartment 20
Adjacent with rotor 2, the air inlet of the other parts of a wind cabin connects a wind inlet air channel, heats the air inlet cigarette receiving of compartment 20
Gas import air channel, the flue gas of heating compartment 20 are used to heat the heat exchange element for turning over heating compartment 20.
The wind cabin 11 of flue gas storehouse 10, one times, secondary wind cabin 12 arrange along hollow arrow direction (i.e. Fig. 1 shows clockwise),
Rotor is along hollow arrow direction (i.e. Fig. 1 show clockwise) rotation at work, i.e., heat exchange element successively by flue gas storehouse 10,
Wind cabin 11, secondary wind cabin 12.
The rotary regenerative air preheater of the present invention, wherein, the air inlet of heating compartment 20 is entered by bypass line cigarette receiving gas
One's intention as revealed in what one says road, the booster fan for the flue gas in gas approach air channel to be imported to heating compartment is provided with bypass line.
The rotary regenerative air preheater of the present invention, wherein, it is provided with heating compartment multiple for monitoring heat exchange element temperature
The device for detecting temperature of degree, multiple device for detecting temperature are radially arranged to be arranged in heating compartment.
The rotary regenerative air preheater of the present invention, wherein, it is provided with the inlet flue duct of booster fan for collecting dust
Ash bucket, the surface of the blade of booster fan is provided with carburized layer.
The rotary regenerative air preheater of the present invention subtracts the obstruction-proof method that leaks out, including：
Using rotary regenerative air preheater gas approach air channel flue gas to what is rotated out of by a wind cabin, will rotate
Enter the heat exchange element heating in flue gas storehouse.
The rotary regenerative air preheater of the present invention subtracts the obstruction-proof method that leaks out, wherein, utilize rotary regenerative air preheater
Gas approach air channel flue gas to turn over heating compartment heat exchange element heating include：
The heating compartment of sector is separated out in a wind cabin using sallop screen, heats Radius side and the flue gas of compartment
Storehouse is adjacent, heats that the short arc side of compartment is adjacent with rotor, and the air inlet of the other parts of a wind cabin connects a wind inlet air channel,
The air inlet of heating compartment connects gas approach air channel, and the flue gas higher than 300 degrees Celsius in gas approach air channel is imported into heating
Compartment；
Heated using the flue gas higher than 300 degrees Celsius for heating compartment with the heat exchange element to turning over heating compartment.
The rotary regenerative air preheater of the present invention subtracts the obstruction-proof method that leaks out, wherein, in addition to：Will using booster fan
The flue gas higher than 300 degrees Celsius in gas approach air channel imports heating compartment, and use is provided with the inlet flue duct of booster fan
In the ash bucket for collecting dust, regular ash discharge is carried out using cinerary device is automatically controlled.
The rotary regenerative air preheater of the present invention subtracts the obstruction-proof method that leaks out, wherein, in addition to：Booster fan is using change
Frequency controls, and the regulation of exhaust gas volumn is carried out by adjusting booster fan rotating speed, regulating degree is with device for detecting temperature on heat exchange element
The temperature of feedback makes the wall temperature of rotary regenerative air preheater cold end heat exchange element be maintained at more than set temperature value to instruct.
The rotary regenerative air preheater of the present invention subtracts the obstruction-proof method that leaks out, wherein, in addition to：Periodic adjustment flue gas enters
The flue gas flow in one's intention as revealed in what one says road exchanges thermal element by high velocity smoke and carries out purge operations, keep heat exchange member to maximum flue gas flow
Part clean surface.
Technical scheme set in First air compartment heating compartment, heat compartment in medium be flue gas, then by
First air side leakage wind enters in heating compartment, in heating compartment to flue gas leak into for flue gas, can thoroughly eliminate swinging sky
Air preheater First air side Air Leakage, is greatly lowered rotary air preheater air leak rate.
Boiler drying capacity deficiency refers to that a wind-warm syndrome for participating in powder processed or air quantity are unsatisfactory for powder demand processed, causes powder energy processed
Power declines.This technology is passed through high-temperature flue gas in former First air side, plays the invigoration effect to a wind-warm syndrome and air quantity, improves drying
Contribute.
Technical scheme can carry out heating flue gas according to the temperature of rotary regenerative air preheater cold end heat exchange element
The regulation of amount, air preheater cold-end air heat exchange element temperature is kept, fundamentally solve rotary regenerative air preheater and block up grey problem.
Technical scheme heating compartment thoroughly completely cuts off First air side with fume side, reduces swinging air preheat
Device leaks out.
Technical scheme is passed through high-temperature flue gas in First air side has certain effect to improving drying capacity.
It the above is only the preferred embodiment of the present invention, it is noted that come for those skilled in the art
Say, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (9)
1. a kind of rotary regenerative air preheater, including chamber and the rotor for being rotationally arranged at the chamber interior center,
Be provided with heat exchange element on the rotor, be divided into the chamber by multiple dividing plates be fan-shaped flue gas storehouse, a wind cabin,
Secondary wind cabin, flue gas storehouse, a wind cabin, secondary wind cabin successively circumferentially around rotor arrange and it is adjacent with rotor, it is described once
Wind cabin is adjacent with secondary wind cabin, it is characterised in that the First air of the bottom of a wind cabin enters what intraoral setting radially extended
Sallop screen, the sallop screen by a wind cabin be separated out sector heating compartment, it is described heating compartment Radius side with
The flue gas storehouse is adjacent, and the short arc side of the heating compartment is adjacent with the rotor, and the other parts of a wind cabin are entered
Air port connects a wind inlet air channel, and the air inlet of the heating compartment connects gas approach air channel, and the flue gas of the heating compartment is used
Heated in the heat exchange element to turning over heating compartment.
2. rotary regenerative air preheater as claimed in claim 1, it is characterised in that the air inlet of the heating compartment passes through side
Siphunculus road connects gas approach air channel, be provided with bypass line for by gas approach air channel flue gas import it is described heating every
The booster fan in storehouse.
3. rotary regenerative air preheater as claimed in claim 2, it is characterised in that be provided with multiple use in the heating compartment
In the device for detecting temperature of monitoring heat exchange element temperature, the multiple device for detecting temperature is radially arranged to be arranged at the heating
In compartment.
4. rotary regenerative air preheater as claimed in claim 3, it is characterised in that set on the inlet flue duct of the booster fan
The ash bucket for collecting dust is equipped with, the surface of the blade of the booster fan is provided with carburized layer.
5. a kind of rotary regenerative air preheater First air side subtracts the obstruction-proof method that leaks out, it is characterised in that including：
The heat exchange element for turning over heating compartment is heated using the flue gas in the gas approach air channel of rotary regenerative air preheater.
6. rotary regenerative air preheater First air side as claimed in claim 5 subtracts the obstruction-proof method that leaks out, it is characterised in that
The flue gas in the gas approach air channel using rotary regenerative air preheater includes to the heat exchange element heating for turning over heating compartment：
Be separated out in a wind cabin heating compartment of sector using sallop screen, the Radius side of the heating compartment with it is described
Flue gas storehouse is adjacent, and the short arc side of the heating compartment is adjacent with the rotor, the air inlet of the other parts of a wind cabin
A wind inlet air channel is connect, the air inlet of the heating compartment connects gas approach air channel, will be higher than 300 in gas approach air channel
Degree Celsius flue gas import the heating compartment；
The heat exchange element for turning over heating compartment is heated using the flue gas of the heating compartment.
7. rotary regenerative air preheater First air side as claimed in claim 5 subtracts the obstruction-proof method that leaks out, it is characterised in that
Also include：The flue gas higher than 300 degrees Celsius in gas approach air channel is imported into the heating compartment using booster fan, it is described
The ash bucket for collecting dust is provided with the inlet flue duct of booster fan, is periodically arranged using cinerary device is automatically controlled
Ash.
8. rotary regenerative air preheater First air side as claimed in claim 5 subtracts the obstruction-proof method that leaks out, it is characterised in that
Also include：Booster fan uses VFC, and the regulation of exhaust gas volumn is carried out by adjusting booster fan rotating speed, and regulating degree is to change
The temperature that device for detecting temperature feeds back on thermal element keeps the wall temperature of rotary regenerative air preheater cold end heat exchange element to instruct
More than set temperature value.
9. rotary regenerative air preheater First air side as claimed in claim 5 subtracts the obstruction-proof method that leaks out, it is characterised in that
Also include：The flue gas flow in periodic adjustment gas approach air channel is exchanged thermal element by high velocity smoke and entered to maximum flue gas flow
Row purge operations, keep heat exchange element clean surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710811400.4A CN107726355A (en) | 2017-09-11 | 2017-09-11 | Rotary regenerative air preheater and its First air side subtract the obstruction-proof method that leaks out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710811400.4A CN107726355A (en) | 2017-09-11 | 2017-09-11 | Rotary regenerative air preheater and its First air side subtract the obstruction-proof method that leaks out |
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| Publication Number | Publication Date |
|---|---|
| CN107726355A true CN107726355A (en) | 2018-02-23 |
Family
ID=61204990
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710811400.4A Pending CN107726355A (en) | 2017-09-11 | 2017-09-11 | Rotary regenerative air preheater and its First air side subtract the obstruction-proof method that leaks out |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826350A (en) * | 2018-06-12 | 2018-11-16 | 大唐东北电力试验研究院有限公司 | Anti-block apparatus is recycled based on the hot Secondary Air for using boiler using brown coal rotary regenerative air heater |
| CN108826349A (en) * | 2018-06-12 | 2018-11-16 | 大唐东北电力试验研究院有限公司 | Anti-block apparatus is recycled based on the heat primary air for using bituminous coal, anthracite-fired boiler rotary regenerative air heater |
| CN109340811A (en) * | 2018-09-26 | 2019-02-15 | 大唐东北电力试验研究院有限公司 | A kind of rotary regenerative air preheater counterflow heat exchange anti-block apparatus |
| CN109631075A (en) * | 2019-01-31 | 2019-04-16 | 南京博沃科技发展有限公司 | A kind of anti-blocking grey air quantity adjusting method of air preheater and device for monitoring running |
| RU2715127C1 (en) * | 2019-07-15 | 2020-02-25 | Михаил Евгеньевич Пузырев | Rotary regenerative heat exchanger |
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