CN207262471U - A kind of rotary regenerative air preheater - Google Patents
A kind of rotary regenerative air preheater Download PDFInfo
- Publication number
- CN207262471U CN207262471U CN201721156391.1U CN201721156391U CN207262471U CN 207262471 U CN207262471 U CN 207262471U CN 201721156391 U CN201721156391 U CN 201721156391U CN 207262471 U CN207262471 U CN 207262471U
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- CN
- China
- Prior art keywords
- air
- flue gas
- heating compartment
- wind cabin
- air preheater
- 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.)
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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
- 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
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Abstract
The rotary regenerative air preheater of the utility model, including 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 inlet air passage, 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 utility model heats the heat exchange element for turning over heating compartment using the flue gas higher than 300 degrees Celsius.The technical solution of the utility model 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
Technical field of heating is the utility model is related to, more particularly to a kind of rotary regenerative air preheater.
Background technology
Air preheater is exactly flue gas in boiler back end ductwork by internal heat sink 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 generally Liang Fencang, San Fencang, four warehouse separated types frequently with heating surface rotary preheater, application in the boiler, wherein
Four points of storehouses are more common in circulating fluidized bed boiler.
Rotary regenerative air preheater can slowly rotate 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 heat sink in air preheater, air preheater slowly rotates afterwards, heat sink movement
To air side, then transfer heat into the air before boiler.
Since air preheater rotor is constantly rotated in operational process, when heat accumulation plate turns to fume side temperature it is gradual on
Rise, hereafter heat accumulation plate enters air side, is 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, aggravates dust stratification；On the other hand, it is more and more stringenter with environment protection emission index, power station pot
Stove is configured with SCR denitration equipment, after air preheater upstream adds SCR denitration equipment, since 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.
Since air preheater blocks, cause air preheater fume side and air-side blockage to raise, thus derive with
Lower problem：
(1) rise of air preheater resistance seriously affects 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.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of simple, practical, efficient rotary regenerative air preheater.
The rotary regenerative air preheater of the utility model, including chamber and be rotationally arranged in the chamber interior
The rotor of the heart, heat exchange element is provided with the rotor, be divided into the chamber by multiple partition plates be fan-shaped flue gas storehouse,
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,
Wind cabin is adjacent with secondary wind cabin, and the sector radially extended is set in the First air entrance of the bottom of a wind cabin
Partition plate, the sallop screen by a wind cabin be separated out sector heating compartment, it is described heating compartment Radius side 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
Connect a wind inlet air passage, the air inlet of the heating compartment connects gas inlet air passage, and the flue gas of the heating compartment is used for pair
Turn over the heat exchange element heating of heating compartment.
The rotary regenerative air preheater of the utility model, wherein, the air inlet of the heating compartment is connect by bypass line
Gas inlet air passage, the supercharging for the flue gas in gas inlet air passage to be imported to the heating compartment is provided with bypass line
Wind turbine.
The rotary regenerative air preheater of the utility model, wherein, it is provided with and multiple is changed for monitoring in the heating compartment
The temperature monitoring device of thermal element temperature, the multiple temperature monitoring device is radially arranged to be arranged in the heating compartment.
The rotary regenerative air preheater of the utility model, wherein, it is provided with and is used on the inlet flue duct of the booster fan
The ash bucket of dust is collected, the surface of the blade of the booster fan is provided with carburized layer.
The rotary regenerative air preheater First air side of the utility model 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 inlet air passage of rotary regenerative air preheater.
The rotary regenerative air preheater First air side of the utility model subtracts the obstruction-proof method that leaks out, wherein, the utilization
The flue gas in the gas inlet air passage of rotary regenerative air preheater includes 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, it is described heating compartment short arc side it is adjacent with the rotor, the other parts of a wind cabin into
Air port connects a wind inlet air passage, and the air inlet of the heating compartment connects gas inlet air passage, by the height in gas inlet air passage
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 utility model subtracts the obstruction-proof method that leaks out, wherein, further include：Profit
The flue gas higher than 300 degrees Celsius in gas inlet air passage is imported into the heating compartment, the booster fan with booster fan
Inlet flue duct on be provided with ash bucket for collecting dust, carry out regular ash discharge using cinerary device is automatically controlled.
The rotary regenerative air preheater First air side of the utility model subtracts the obstruction-proof method that leaks out, wherein, further include：Increase
Pressure fan uses frequency control, the adjusting of exhaust gas volumn is carried out by adjusting booster fan rotating speed, regulating degree is with heat exchange element
The temperature of temperature monitoring device feedback makes the wall temperature of rotary regenerative air preheater cold end heat exchange element be maintained at setting temperature to instruct
It is more than angle value.
The rotary regenerative air preheater First air side of the utility model subtracts the obstruction-proof method that leaks out, wherein, further include：It is fixed
Phase adjusts the flue gas flow in gas inlet air passage to maximum flue gas flow, exchanges thermal element by high velocity smoke and carries out purging behaviour
Make, keep heat exchange element clean surface.
The technical solution of the utility model sets heating compartment in First air compartment, and 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, can thoroughly eliminate revolution
Regenerative air heater First air side Air Leakage, is greatly lowered rotary air preheater air leak rate.
Brief description of the drawings
Fig. 1 is the structure diagram of the rotary regenerative air preheater of the utility model；
Fig. 2 is the arrangement schematic diagram of the heating compartment of the rotary regenerative air preheater of the utility model.
Embodiment
As shown in Figure 1 and Figure 2, the rotary regenerative air preheater of the utility model, including chamber 1 and be rotatably arranged
Rotor 2 in chamber interior center, heat exchange element is provided with rotor 2, and it is fan-shaped to be divided into chamber 1 by multiple partition plates
Flue gas 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 successively circumferentially around rotor
Arrange and adjacent with rotor 2, one time wind cabin is adjacent with secondary wind cabin, and footpath is set in the First air entrance of the bottom of a wind cabin
To the sallop screen 3 of extension, a wind cabin 11 is separated out the heating compartment 20 of sector by sallop screen 3, heats the short of compartment 20
Arc side is adjacent with rotor 2, and the air inlet of the other parts of a wind cabin connects a wind inlet air passage, heats the air inlet of compartment 20
Gas inlet air passage is connect, the flue gas of heating compartment 20 is 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 are arranged 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 pass through successively flue gas storehouse 10,
Wind cabin 11, secondary wind cabin 12.
The rotary regenerative air preheater of the utility model, wherein, the air inlet of heating compartment 20 passes through bypass line cigarette receiving
Gas import air passage, the booster fan for the flue gas in gas inlet air passage to be imported to heating compartment is provided with bypass line.
The rotary regenerative air preheater of the utility model, wherein, it is provided with heating compartment multiple for monitoring heat exchange member
The temperature monitoring device of part temperature, multiple temperature monitoring device are radially arranged to be arranged in heating compartment.
The rotary regenerative air preheater of the utility model, wherein, it is provided with the inlet flue duct of booster fan for collecting
The ash bucket of dust, the surface of the blade of booster fan are provided with carburized layer.
The rotary regenerative air preheater of the utility model subtracts the obstruction-proof method that leaks out, including：
Using rotary regenerative air preheater gas inlet air passage 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 utility model subtracts the obstruction-proof method that leaks out, wherein, it is pre- using swinging air
The flue gas in the gas inlet air passage of hot device includes the heat exchange element heating for turning over heating compartment：
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 passage,
The air inlet of heating compartment connects gas inlet air passage, and the flue gas higher than 300 degrees Celsius in gas inlet air passage is imported heating
Compartment；
Heated using heat exchange element of the flue gas higher than 300 degrees Celsius to turning over heating compartment for heating compartment.
The rotary regenerative air preheater of the utility model subtracts the obstruction-proof method that leaks out, wherein, further include：Using being pressurized wind
The flue gas higher than 300 degrees Celsius in gas inlet air passage is imported heating compartment by machine, is set on the inlet flue duct of booster fan
It is useful for collecting the ash bucket of dust, regular ash discharge is carried out using cinerary device is automatically controlled.
The rotary regenerative air preheater of the utility model subtracts the obstruction-proof method that leaks out, wherein, further include：Booster fan is adopted
With frequency control, the adjusting of exhaust gas volumn is carried out by adjusting booster fan rotating speed, regulating degree is with temperature monitoring on heat exchange element
Device feedback temperature for instruct, make rotary regenerative air preheater cold end heat exchange element wall temperature be maintained at set temperature value with
On.
The rotary regenerative air preheater of the utility model subtracts the obstruction-proof method that leaks out, wherein, further include：Periodic adjustment cigarette
The flue gas flow in gas import air passage exchanges thermal element by high velocity smoke and carries out purge operations, keep changing to maximum flue gas flow
Thermal element clean surface.
The technical solution of the utility model sets heating compartment in First air compartment, and 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, can thoroughly eliminate revolution
Regenerative air heater 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.
The technical solution of the utility model can be heated according to the temperature of rotary regenerative air preheater cold end heat exchange element
The adjusting of exhaust gas volumn, keeps air preheater cold-end air heat exchange element temperature, fundamentally solves rotary regenerative air preheater and blocks up ash
Problem.
The technical solution of the utility model heating compartment thoroughly completely cuts off First air side with fume side, reduces swinging air
Preheater leaks out.
The technical solution of the utility model 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 utility model, it is noted that for the ordinary skill people of the art
For member, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as the scope of protection of the utility model.
Claims (4)
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 partition 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 sets what is radially extended in the First air entrance of the bottom of a wind cabin
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, it is described heating compartment short arc side it is adjacent with the rotor, the other parts of a wind cabin into
Air port connects a wind inlet air passage, and the air inlet of the heating compartment connects gas inlet air passage, 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 inlet air passage, be provided with bypass line for by gas inlet air passage 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 temperature monitoring device of monitoring heat exchange element temperature, the multiple temperature monitoring device 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721156391.1U CN207262471U (en) | 2017-09-11 | 2017-09-11 | A kind of rotary regenerative air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721156391.1U CN207262471U (en) | 2017-09-11 | 2017-09-11 | A kind of rotary regenerative air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207262471U true CN207262471U (en) | 2018-04-20 |
Family
ID=61920398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721156391.1U Expired - Fee Related CN207262471U (en) | 2017-09-11 | 2017-09-11 | A kind of rotary regenerative air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207262471U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107726355A (en) * | 2017-09-11 | 2018-02-23 | 大唐东北电力试验研究所有限公司 | Rotary regenerative air preheater and its First air side subtract the obstruction-proof method that leaks out |
| CN111102596A (en) * | 2019-03-11 | 2020-05-05 | 杭州同信环境科技有限公司 | System for preventing ammonium bisulfate of boiler air preheater from blocking ash |
-
2017
- 2017-09-11 CN CN201721156391.1U patent/CN207262471U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107726355A (en) * | 2017-09-11 | 2018-02-23 | 大唐东北电力试验研究所有限公司 | Rotary regenerative air preheater and its First air side subtract the obstruction-proof method that leaks out |
| CN111102596A (en) * | 2019-03-11 | 2020-05-05 | 杭州同信环境科技有限公司 | System for preventing ammonium bisulfate of boiler air preheater from blocking ash |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180420 Termination date: 20190911 |