CN208282145U - A kind of station boiler rotary regenerative air preheater for preventing dust stratification from staiing deposition - Google Patents
A kind of station boiler rotary regenerative air preheater for preventing dust stratification from staiing deposition Download PDFInfo
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- CN208282145U CN208282145U CN201820677908.XU CN201820677908U CN208282145U CN 208282145 U CN208282145 U CN 208282145U CN 201820677908 U CN201820677908 U CN 201820677908U CN 208282145 U CN208282145 U CN 208282145U
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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 utility model discloses a kind of station boiler rotary regenerative air preheaters for preventing dust stratification from staiing deposition, including flue gas Fen Cang, a wind separating bin and secondary air separating storehouse, circulating-heating point storehouse is separated out by partition in the secondary air separating storehouse, pass through corresponding pipeline system design and arrangement again, in the lower operating condition of rotor fouling potential, part boiler First air/Secondary Air air flow rate is shunted, using the counterflow heat exchange of itself and flue gas, reduces exhaust gas temperature；When rotor fouling potential increases, the co-current flow for realizing circulating-heating wind cabin internal flow and flue gas absorbs heat from high temperature segment element, is most difficult to remove the rotor elements heat release in region to middle-temperature section bottom and low-temperature zone dust stratification, its temperature levels is effectively improved, and then substantially reduces the deposition of dust stratification contamination.
Description
Technical field
The utility model relates to boiler air preheater technical fields, and in particular to a kind of electricity for preventing dust stratification from staiing deposition
It stands revolving-type air preheater of boiler.
Background technique
The combustion product of fossil fuel generally comprises sulfur trioxide (SO3) and vapor (H2Both O), SO3With vapor knot
It closes, (the heat accumulating element metallic walls filled inside air preheater when flue gas is cooled to sufficient degree inside air preheater
When face temperature is lower than the dew point of sulfuric acid vapor), it will it is condensed into liquid sulfuric acid (H2SO4), it is formed to the strong of metal heat accumulating element
Corrosion, meanwhile, the fly ash granule in flue gas is adhered to heat accumulating element surface, leads to fouling, due to gas flow channel sectional area
It reduces, the heat transfer efficiency of air preheater is caused to reduce, flow resistance increases, and blower power consumption increases, and seriously affects the peace of boiler
Entirely and economical operation.
Using the station boiler of SCR gas denitrifying technology, on the one hand due to the effect of catalyst, by part SO2It is oxidized to
SO3, on the one hand due to NH in flue gas3/ NO molar ratio, the non-uniform influence of flue gas flow field equal distribution, in the flue gas in catalyst downstream
Inevitably there is the unreacted reducing agent NH to escape on a small quantity3, and with the SO in flue gas3、H2The component reactions such as O generate sulfuric acid
Hydrogen ammonium (ABS), the substance start to condense within the scope of about 150-210 DEG C of temperature range, and it is empty to be normally at traditional station boiler
In the middle-temperature section bottom and low temperature segment limit of air preheater, since the substance has stronger viscosity, caused to adhere to flying dust
Blocking.
The study found that the dust stratification generated by ABS, usually becomes apparent at heat accumulating element layering.Simultaneously as cold end stores
Thermal element is generally possible to effectively remove by way of regular steam soot blowing using closing template, surface deposits；Also, its table
Face have passed through plating enamel technology processing, and finish is higher, and anticorrosion and Soot Performance hotter side and medium temperature segment element are more preferable.It is comprehensive
On, the region of air preheater heat accumulating element ABS corrosion dust stratification greatest risk is present in the bottom section of middle-temperature section heat accumulating element,
Ammonium hydrogen sulfate (ABS) and sulfuric acid vapor (H2SO4) the corrosion dust stratification that generates, range and degree are produced with gas component
The concentration and dew-point temperature and heat accumulating element of object have along the temperature distributing rule of gas flow direction and rotor direction of rotation
It closes, changes the Temperature Distribution of internal rotor, so that under the conditions of varying environment temperature, unit load, the influence of deposit attack product
Section is only limitted to cold end heat accumulating element, can be effectively removed by soot blowing means, its influence to unit operation is reduced to minimum.
The ammonium hydrogen sulfate of air preheater heat accumulating element surface deposition, can decompose reaction under the conditions of certain temperature,
Periodically increase heat accumulating element surface temperature, thus " thermal cleaning " side for making sedimentation products decompose and be carried by air-flow removing
Method helps to prevent dust stratification trend growth.
The conventional air preheater of the prior art uses single flue gas-air counterflow heat exchange, the efficiency of pure counterflow heat exchange
It is higher, but the metal temperature of cold end near zone is lower, since rotor rotation leads to the temperature gradient on direction of rotation, in rotor
The air cooling cycle terminate to start with the flue gas period near sector, temperature of rotor level is minimum and corrosion product is heavy
The product highest region of depth；The efficiency of flue gas-air downstream heat transfer is lower, but smaller in the temperature gradient on rotor axial.
Utility model content
The purpose of the application is to solve the intrinsic ammonium hydrogen sulfate of traditional rotary regenerative air preheater and sulfuric acid vapor is heavy
The blocking of dust stratification caused by product and etching problem, meanwhile, it effectively avoids aobvious using exhaust gas temperature caused by thermal wind sensor heating
It writes and increases and occurred using the case where steam air heater heating bring additional thermal energy consumption, providing one kind prevents dust stratification from staiing deposition
Station boiler rotary regenerative air preheater, can efficiently improve air preheater cold-end air and middle-temperature section bottom dust stratification most serious region
The temperature of metal, so that sedimentation products is promoted to decompose volatilization, meanwhile, also having influences smaller, flexible adjustment side to boiler efficiency
Just the advantages of.
The utility model is solved the above problems by following technological means: a kind of station boiler for preventing dust stratification from staiing deposition
Rotary regenerative air preheater, including flue gas Fen Cang, a wind separating bin and secondary air separating storehouse, the flue gas Fen Cang and a wind separating bin
Between separated by first partition, separated between a wind separating bin and secondary air separating storehouse by second partition, it is described secondary
It is separated between wind separating bin and flue gas point storehouse by third partition, circulating-heating point is separated out by the 4th partition in secondary air separating storehouse
Storehouse, secondary air separating storehouse inlet air air duct is connected to by the first intermediate air duct with circulating-heating point storehouse inlet air air duct, among described first
The first valve is provided on air duct, circulating-heating divides storehouse inlet air air duct to be connected to plasmas channel, and circulating-heating divides storehouse inlet air air duct
On be provided with the second valve, circulating-heating divides storehouse exhaust air flue to connect by the second intermediate air duct and secondary air separating storehouse exhaust air flue
It is logical, third valve is provided on the second intermediate air duct.
Further, the air-flow in secondary air separating storehouse exhaust air flue and the second intermediate air duct convergence inflow total air duct of Secondary Air, two
The secondary total air duct of wind passes sequentially through Secondary Air circulation air path and global cycle air duct is connected to plasmas channel, the Secondary Air circulated air
The 4th valve is provided on road.
Further, a wind separating bin exhaust air flue is connected to by First air circulation air path with global cycle air duct, described primary
The 5th valve is provided on wind circulation air path.
It further, further include the circulated air heating system being connected to circulating-heating point storehouse, the circulated air heating system
Wind inlet end is connected to plasmas channel, and the outlet air end of circulated air heating system is connected to circulating-heating point storehouse exhaust air flue.
Further, the circulated air heating system includes circulation heating fan and flow type calorifier, the circulating-heating wind
The air inlet of machine is connected to plasmas channel, and the air outlet of circulation heating fan is connected to the air inlet of flow type calorifier, and air-flow adds
The air outlet of hot device is connected to circulating-heating point storehouse exhaust air flue.
Further, the circulated air heating system further includes the dust-extraction unit for air-flow dedusting.
Further, the circulated air heating system further includes recirculating air flow measuring device.
The utility model has the beneficial effects that
1, the air preheater of the application changes three warehouse separated type structures of transmission, passes through partition point in secondary air separating storehouse
It is separated out circulating-heating point storehouse, in conjunction with corresponding pipeline system design and arrangement, in the lower operating condition of rotor fouling potential, distributary division
Divide boiler First air/Secondary Air air flow rate, utilize the counterflow heat exchange of itself and flue gas, reduces exhaust gas temperature；Incline in rotor dust stratification
To when increasing, realizes the co-current flow of circulating-heating wind cabin internal flow and flue gas, absorb heat from high temperature segment element, to middle-temperature section bottom
Portion and low-temperature zone dust stratification are most difficult to remove the rotor elements heat release in region, effectively improve its temperature levels, and then substantially reduce dust stratification
The deposition of contamination.
2, the application makes middle-temperature section bottom and cold end accumulation of heat member by changing air preheater internal element thermo parameters method
Part metal temperature is above the adiabatic condensation temperature that ammonium hydrogen sulfate etc. stains product, thus by ammonium hydrogen sulfate and sulphur within gyration period
The deposit attack band of acid vapor fully controls within the scope of the preferable cold end of soot blowing permeability, in operation, can be blown by optimization
Ash, by dust stratification control in reasonable degree, thus control and improve because unit denitration the escaping of ammonia it is exceeded caused by ammonium hydrogen sulfate
Low-temperature corrosion caused by ash deposits corrosion and burning high sulfur coal and SCR denitration catalysis are reacted.
3, in the application, by the way that independent circulating-heating wind cabin is arranged in air preheater rotor air side, increase circulation
Heating blower, and air duct is connected accordingly, by the driving of high temperature circulation heating blower, hot blast fluid may be implemented and closing
Circulating in runner.When system starts, normal temperature air is sucked by atmospheric environment, is pressurized by circulation heating fan, by following
Ring heats wind cabin top and enters, and is in downstream heat transfer with flue gas flow direction, and after absorbing the accumulation of heat of hot end element, temperature of fluid medium is increased,
It effectively improves the contamination of air preheater dust stratification to middle-temperature section bottom and cold end heat accumulating element heat release by heat convection again and is most difficult to
The component temperature for removing region, makes it higher than the condensation temperature of condensable product in the flue gases such as ammonium hydrogen sulfate (ABS) and sulfuric acid vapor
Degree plays the role of preventing dust stratification from staiing deposition.After high temperature circulation fluid is flowed out by circulating-heating wind cabin cold end, removed by high temperature
Dirt device filters out after the flying dust that heat accumulating element sur-face peeling carries, then driven by circulation heating fan, into next repeating query
Ring fluid interchange.
4, in the application, by the first intermediate air duct of setting and the second intermediate air duct, can incline in air preheater dust stratification
It under slight operating condition, realizes that circulating-heating wind cabin shunts part boiler air-supply (Secondary Air), and makes it with flue gas flow direction in inverse
Stream heat exchange improves boiler afterheat recovery utilization rate and unit efficiency to reduce air preheater outlet flue-gas temperature.
5, it in the application, by setting Secondary Air circulation air path and global cycle air duct, may be implemented to store in air preheater
When thermal element fouling potential is increased slightly, part Secondary Air cold wind bypass air is set to preheat rotor, to improve temperature of rotor water
It is flat, play the role of preventing dust stratification from staiing deposition.
6, in the application, it is provided with First air circulation air path, Secondary Air circulation air path and global cycle air duct, and in each wind
On road be provided with corresponding valve, make a wind separating bin, secondary air separating storehouse and circulating-heating point storehouse discharge hot blast fluid with
Circulated air fluid media (medium) mixing, to improve the temperature of circulated air fluid media (medium), so that improving prevents dust stratification inside heat accumulating element
The effect of contamination.
7, it in the application, on circulation heating fan outlet conduits, is provided with steam extraction and heats the hot device of dividing wall type air-flow, utilize
Turbine system high temperature and pressure steam extraction carries out auxiliary heating to circulating air, in the operation of unit underload peak regulation operating condition, uses height
Under the unfavorable operating condition such as sulphur coal, the circulating air initial temperature further increased into circulating-heating point storehouse is horizontal, thus play into
One step promotes middle-temperature section bottom and low-temperature zone component temperature is horizontal, strengthens the effect that product is stain in removal.
8, in the application, on circulation heating fan inlet conduits, it is provided with dust-extraction unit, it typically, can be using rotation
Wind separator is added with separation from fly ash granule and heat primary air, the hot Secondary Air of air preheater heat accumulating element sur-face peeling
The fly ash granule carried in hot fluid prevents flying dust concentration deposition inside circulated air heating system pipe, reduces to circulating-heating
The abrasion of the components such as draught fan impeller.
9, in the application, on circulation heating fan outlet conduits, it is provided with recirculating air flow measuring device, is followed with monitoring
Ring air volume, the flow of circulated air can suck the flow and circulation heating fan of surrounding air by control atmosphere
Inlet baffle aperture regulate and control.The size of air circulation, according to unit load, as-fired coal sulphur content content, SCR denitration system
NH3The parameters such as escapement ratio level, exhaust gas temperature level are determined.
Above-mentioned apparatus and system intercouple, and a variety of regulative mode combinations become station boiler rotary regenerative air preheater
Comprehensive accumulatingdust stains system scheme.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the schematic diagram of air preheater heat accumulating element Temperature Distribution under different modes.
Specific embodiment
For the ease of understanding the utility model, below in conjunction with Figure of description and preferred embodiment to the utility model
Work more comprehensively, meticulously describes, but the protection scope of the utility model is not limited to embodiment in detail below.
Such as Fig. 1, the station boiler rotary regenerative air preheater for preventing dust stratification from staiing deposition, including flue gas divide storehouse
29, a wind separating bin 30 and secondary air separating storehouse 31 are separated between the flue gas Fen Cang and a wind separating bin by first partition 33,
It is separated between wind separating bin and secondary air separating storehouse by second partition 34, a wind separating bin inlet air air duct 1 and atmosphere are logical
Road is connected to 11, air flow valve 19 is provided on plasmas channel, air flow valve realizes the opening and closing of plasmas channel, described secondary
It is separated between wind separating bin and flue gas point storehouse by third partition 36, circulation is separated out by the 4th partition 35 in secondary air separating storehouse and is added
Heat divides storehouse 32, and secondary air separating storehouse inlet air air duct 3 is connected to by the first intermediate air duct 5 with circulating-heating point storehouse inlet air air duct 7, described
The first valve 17 is provided on first intermediate air duct, circulating-heating divides storehouse inlet air air duct 7 to be connected to 11 with plasmas channel, circulating-heating
The second valve 18 is provided on point storehouse inlet air air duct, circulating-heating divides storehouse exhaust air flue 8 to pass through the second intermediate air duct 6 and Secondary Air
Divide storehouse exhaust air flue 4 to be connected to, is provided with third valve 16 on the second intermediate air duct.
The convergence of the air-flow in secondary air separating storehouse exhaust air flue 4 and the second intermediate air duct 6 flows into the total air duct 37 of Secondary Air, Secondary Air
Total air duct passes sequentially through Secondary Air circulation air path 26 and global cycle air duct 28 is connected to plasmas channel, the Secondary Air circulated air
The 4th valve 15 is provided on road.
Wind separating bin exhaust air flue 2 is connected to by First air circulation air path 27 with global cycle air duct 28, the First air
The 5th valve 14 is provided on circulation air path.
It further include circulated air heating system, the circulated air heating system includes the dust-extraction unit for passing sequentially through pipeline connection
22, circulation heating fan 23, recirculating air flow measuring device 24 and flow type calorifier 25, the import of the dust-extraction unit is by following
Ring wind inlet air duct 9 is connected to plasmas channel, and the 6th valve 20, the air-flow heating are provided on the circulation wind inlet air duct
The outlet of device is connected to by circulated air outlet conduits 13 with circulating-heating point storehouse exhaust air flue.
In this example explanation, the direction of rotation of air preheater rotor is flue gas-First air-Secondary Air.
When unit load is higher, environment temperature is higher, and ammonium hydrogen sulfate and the sulfuric acid string of deposits are entirely located in cold end heat accumulating element
In range, when air preheater fouling potential is smaller, settable circulating-heating divides 32 distributary division of storehouse wind flow in two times, inside
For pure counterflow heat exchange, to improve heat exchange efficiency.Specific embodiment is to open third valve 16, the first valve 17, the second valve
18, close remaining spigot baffle.Secondary Air inlet air flow a part flows into secondary air separating storehouse by secondary air separating storehouse inlet air air duct 3
31, another part flows into circulating-heating behind the first intermediate air duct 5 and circulating-heating point storehouse inlet air air duct 7 and divides storehouse 32, with rotor
After heat accumulating element completes heat transfer process, high temperature Secondary Air divides storehouse outlet air through secondary air separating storehouse exhaust air flue 4 and circulating-heating respectively
Air duct 8, the second intermediate air duct 6 are flowed out, and the total air duct 37 of Secondary Air is entered after three-way air conduit converges.
When performing low-load running of machine set, if air preheater fouling potential is increased slightly, on the basis of aforesaid operations,
Open the 4th valve 15, distributary division in two times wind through global cycle air duct 28, Secondary Air circulation air path 26, import the total air duct of Secondary Air
37.Due to the non-ventilating air preheater rotor of part Secondary Air, air preheater flue gas/heat capacity of air is than increasing, and air is to pre-
The cooling effect decrease of hot device rotor, the raising of air preheater rotor bulk temperature level, ammonium hydrogen sulfate and sulfuric acid vapor sink
Product section is mobile to cold end direction, is conducive to dust stratification product and is removed by modes such as soot blowings.
When air preheater fouling potential further increases, circulating-heating point storehouse internal flow is switched to and flow of flue gas
Direction is in the closed cycle flow of fair current.Specific embodiment is, close third valve 16, the first valve 17, the 5th valve 14,
4th valve 15 opens the second valve 18, the 6th valve 20, starts circulation heating fan 23, and atmosphere flows through plasmas channel 11, follows
Ring wind inlet air duct 9, by dust-extraction unit 22, after removing the impurity such as the dust contained in fluid media (medium), by circulation heating fan
After 23 are boosted, after circulation heating fan outlet conduits 12, recirculating air flow measuring device 24, flow type calorifier 25,
Via circulated air outlet conduits 13, divide storehouse exhaust air flue 8 into circulating-heating, divides storehouse 32 inside heat accumulating element by circulating-heating
It after heat temperature raising, is flowed out by circulating-heating point storehouse wind inlet channel 7, to complete to circulate.
After circulated air establishes initial flow, plasmas channel 11 is gradually closed, so that circulated air is in above-mentioned runner in closing
It circulates, divides the hot end element inside storehouse 32 to absorb heat from circulating-heating, to middle-temperature section and cold end unit heat discharging, to effectively mention
High middle-temperature section and cold end component temperature are horizontal, so that the corrosion string of deposits of ammonium hydrogen sulfate and sulfuric acid vapor moves down, control cold
In the altitude range for holding enamel elements, effectively it can solve and control by modes such as cold end soot blower purgings.
When the operation of unit underload peak regulation method or burning coal sulphur content level are higher, when fouling potential is higher, the present invention
It can mitigate and control its fouling potential, specific embodiment by way of improving circulating-heating wind cabin fluid inlet temperature
On the basis of aforesaid operations, to open and adjusting the 5th valve 14, the 4th valve 15, improve mixed circulated air entrance
Air duct wind-warm syndrome is horizontal.
When unit air preheater fouling potential is highest, on the basis of aforesaid operations, circulated air steam extraction gas is enabled
Heater 25 is flowed, is exchanged heat using from Steam Turbine high temperature and pressure steam extraction, circulating-heating wind-warm syndrome is further promoted, guarantees air
Inside preheater, the corrosion string of deposits of ammonium hydrogen sulfate and sulfuric acid vapor is fully located in the altitude range of cold end plating enamel elements.
In the present invention, rate-of flow and heating effect inside circulating-heating wind cabin can be by adjusting circulating-heating wind
The aperture of machine inlet baffle 21 is realized.
Below with the implementation result for illustrating the application for a typical crew qiting air preheater pattern, certain coal fired power generation
Unit plant boiler configures the trisector air heater of 2 model LAP10320/2300, heat accumulating element point heat
End, two layers of cold end arrangement, height are respectively 1400mm, 900mm, prevent heat accumulating element dust stratification from staiing technology path item using difference
Under part, air preheater heat accumulating element Temperature Distribution is as shown in Fig. 2, air preheater flue gas, First air, Secondary Air outlet temperature
Parameter is as shown in table 1.
Table 1
As it can be seen that (entering from cold end, heat relative to the heat exchange of thermal wind sensor, steam air heater, circulating-heating hot wind and flue gas adverse current
End outflow) etc. schemes, the application propose prevents heat accumulating element dust stratification stain technology path, to air preheater dust stratification stain most
The component temperature promotion that hardly possible removes region (hot end bottom) is more significant, imitates relative to remaining technology path with better implementation
Fruit.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (7)
1. a kind of station boiler rotary regenerative air preheater for preventing dust stratification from staiing deposition, including flue gas Fen Cang, a wind separating bin
It with secondary air separating storehouse, is separated between the flue gas Fen Cang and a wind separating bin by first partition, a wind separating bin and two
It is separated between secondary wind separating bin by second partition, is separated between the secondary air separating storehouse and flue gas point storehouse by third partition,
It is characterized in that: circulating-heating point storehouse being separated out by the 4th partition in secondary air separating storehouse, secondary air separating storehouse inlet air air duct passes through the
One intermediate air duct is connected to circulating-heating point storehouse inlet air air duct, and the first valve is provided on the first intermediate air duct, and circulation adds
Heat divides storehouse inlet air air duct to be connected to plasmas channel, and the second valve, circulating-heating point are provided on the inlet air air duct of circulating-heating point storehouse
Storehouse exhaust air flue is connected to by the second intermediate air duct with secondary air separating storehouse exhaust air flue, and the is provided on the second intermediate air duct
Three valves.
2. the station boiler rotary regenerative air preheater according to claim 1 for preventing dust stratification from staiing deposition, feature exist
Flow into the total air duct of Secondary Air in the convergence of: the air-flow in secondary air separating storehouse exhaust air flue and the second intermediate air duct, the total air duct of Secondary Air according to
It is secondary to be connected to by Secondary Air circulation air path and global cycle air duct with plasmas channel, is provided on the Secondary Air circulation air path
Four valves.
3. the station boiler rotary regenerative air preheater according to claim 2 for preventing dust stratification from staiing deposition, feature exist
In: a wind separating bin exhaust air flue is connected to by First air circulation air path with global cycle air duct, on the First air circulation air path
It is provided with the 5th valve.
4. the station boiler rotary regenerative air preheater according to claim 1 for preventing dust stratification from staiing deposition, feature exist
In: it further include the circulated air heating system being connected to circulating-heating point storehouse, the wind inlet end and atmosphere of the circulated air heating system
Channel connection, the outlet air end of circulated air heating system are connected to circulating-heating point storehouse exhaust air flue.
5. the station boiler rotary regenerative air preheater according to claim 4 for preventing dust stratification from staiing deposition, feature exist
In: the circulated air heating system include circulation heating fan and flow type calorifier, the air inlet of the circulation heating fan with
Plasmas channel connection, the air outlet of circulation heating fan are connected to the air inlet of flow type calorifier, the air outlet of flow type calorifier
It is connected to circulating-heating point storehouse exhaust air flue.
6. the station boiler rotary regenerative air preheater according to claim 5 for preventing dust stratification from staiing deposition, feature exist
In: the circulated air heating system further includes the dust-extraction unit for air-flow dedusting.
7. the station boiler rotary regenerative air preheater according to claim 6 for preventing dust stratification from staiing deposition, feature exist
In: the circulated air heating system further includes recirculating air flow measuring device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820677908.XU CN208282145U (en) | 2018-05-08 | 2018-05-08 | A kind of station boiler rotary regenerative air preheater for preventing dust stratification from staiing deposition |
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| CN201820677908.XU CN208282145U (en) | 2018-05-08 | 2018-05-08 | A kind of station boiler rotary regenerative air preheater for preventing dust stratification from staiing deposition |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017499A (en) * | 2019-04-04 | 2019-07-16 | 国家电投集团电站运营技术（北京）有限公司 | A kind of method that air preheater cold-end air heat accumulating element divides ring anti-blocking |
| CN110030573A (en) * | 2019-05-08 | 2019-07-19 | 国网湖南省电力有限公司 | A kind of system for preventing rotary regenerative air preheater dust stratification from staiing |
| CN110118362A (en) * | 2019-06-10 | 2019-08-13 | 西安热工研究院有限公司 | A kind of tube-type air preheater for preventing hydrogen sulfate ammonia from blocking |
| CN111306567A (en) * | 2020-02-20 | 2020-06-19 | 华电电力科学研究院有限公司 | Hot air positive pressure blowing system for inhibiting blockage of air preheater and working method thereof |
| CN112577064A (en) * | 2020-11-11 | 2021-03-30 | 湖南华电常德发电有限公司 | Air preheater anti-blocking structure capable of introducing hot air in sections and working method thereof |
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2018
- 2018-05-08 CN CN201820677908.XU patent/CN208282145U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017499A (en) * | 2019-04-04 | 2019-07-16 | 国家电投集团电站运营技术（北京）有限公司 | A kind of method that air preheater cold-end air heat accumulating element divides ring anti-blocking |
| CN110017499B (en) * | 2019-04-04 | 2020-03-31 | 国家电投集团电站运营技术（北京）有限公司 | Method for preventing blockage of cold-end heat storage element of air preheater in ring-dividing manner |
| CN110030573A (en) * | 2019-05-08 | 2019-07-19 | 国网湖南省电力有限公司 | A kind of system for preventing rotary regenerative air preheater dust stratification from staiing |
| CN110118362A (en) * | 2019-06-10 | 2019-08-13 | 西安热工研究院有限公司 | A kind of tube-type air preheater for preventing hydrogen sulfate ammonia from blocking |
| CN110118362B (en) * | 2019-06-10 | 2024-02-23 | 西安热工研究院有限公司 | Tubular air preheater capable of preventing ammonium bisulfate from being blocked |
| CN111306567A (en) * | 2020-02-20 | 2020-06-19 | 华电电力科学研究院有限公司 | Hot air positive pressure blowing system for inhibiting blockage of air preheater and working method thereof |
| CN112577064A (en) * | 2020-11-11 | 2021-03-30 | 湖南华电常德发电有限公司 | Air preheater anti-blocking structure capable of introducing hot air in sections and working method thereof |
| CN112577064B (en) * | 2020-11-11 | 2023-04-28 | 湖南华电常德发电有限公司 | Air preheater anti-blocking structure with hot air introduced in sections and working method thereof |
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