CN205746956U - The system of heat primary air circulated in countercurrent suppression ABS frozen plug AH - Google Patents
The system of heat primary air circulated in countercurrent suppression ABS frozen plug AH Download PDFInfo
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- CN205746956U CN205746956U CN201620404029.0U CN201620404029U CN205746956U CN 205746956 U CN205746956 U CN 205746956U CN 201620404029 U CN201620404029 U CN 201620404029U CN 205746956 U CN205746956 U CN 205746956U
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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
This utility model relates to the system of a kind of heat primary air circulated in countercurrent suppression ABS frozen plug AH.The problem that can't solve air preheater heated surface corrosion and blocking at present.This utility model includes trisector air heater, it is characterized in: also include heat primary air introduction pipe, hot blast introduces hot secondary air box pipeline and hot blast introduces cold side conduits, trisector air heater is provided with number fanning strip of cold end and hot junction one fanning strip, an independent adverse current heating cabinet is formed between number fanning strip of cold end and hot junction one fanning strip, this adverse current heating cabinet divides between storehouse in secondary air separating storehouse and flue gas, number fanning strip of cold end is provided with cold end voltage stabilizing chamber, hot junction one fanning strip is provided with hot junction pressure balance chamber, hot blast introduces one end and the connection of hot junction pressure balance chamber of hot secondary air box pipeline.This utility model can thoroughly solve to cause air preheater to block serious problem because generation ABS adheres to heat-transfer surface during coal-fired plant boiler runs.
Description
Technical field
This utility model relates to the system of a kind of heat primary air circulated in countercurrent suppression ABS frozen plug AH, belongs to the Anti-clogging technical field of coal fired power plant air preheater.
Background technology
Coal-burning power plant can generate SO when using the ature of coal containing certain sulfur3, the SO that generated3Amount affected from several ppm to tens ppm the highest by factors such as coal sulfur height.By environmental protection standard control, coal-burning power plant installs SCR system the most entirely, for the NO producing burningxCarry out removing to meet environmental protection standard to NOxThe requirement of concentration of emission.SCR system removing NOxProcess need according to boiler generate NOxAmount sprays into substantial amounts of NH3, limited by field condition, part NH3Fail to participate in reaction completely thus cause certain density the escaping of ammonia, additionally, the catalyst in SCR system is to SO in flue gas2It is oxidized to SO3There is certain catalytic action, cause SO in SCR reactor2It is oxidized to SO3Amount can change in the range of 0.3～2%.
High-temperature flue gas enters downstream air preheater after reaction in SCR system and carries out heat exchange (general air preheater entrance flue gas temperature is 350～400 DEG C), heating boiler one secondary wind.After the heat exchange of the whole flow process of air preheater, air preheater cold side outlet flue gas mean temperature is typically reduced to 130～160 DEG C, the SO in period flue gas3Condense, thus exchange hot side and cause corrosion, meanwhile, the SO condensed in flue gas3And NH3Reaction generates NH4HSO4, NH4HSO4Having the strongest viscosity, easily stick to air preheater heat exchanger fin surface, meanwhile, stronger viscosity the most easily adheres to the flying dust in flue gas, thus causes air preheater inlet outlet pressure differential to be gradually increased, blocks and gradually increase the weight of, and finally affects unit output.For air preheater blockage problem; power plant generally uses steam soot blowing or the modes such as steam air heater that come into operation to alleviate; on the one hand this affect unit economy increases coal consumption; on the other hand blockage problem cannot at all being solved; then need shutdown water under high pressure to be rinsed when blocking serious, have impact on unit load rate.
Existing technology is difficult to solve the problems referred to above, if publication date is on October 22nd, 1997, in the Chinese patent of Publication No. CN2265482, disclose a kind of blocking-resistance device for boiler air preheating, this blocking-resistance device for boiler air preheating is installed in air preheater, it is additionally arranged floating net frame for gear on air preheater top, by hanger spring, floating net frame for gear hung on air preheater top, ash disposal spring it is mounted with in air preheater smoke pipe, ash disposal lower spring end has lifted weight, flue gas perturbation action is utilized to make floating net frame for gear, ash disposal spring produces sink-float vibration, in sticking to fume pipe, flyash constantly strikes off, to reach the anti-blocking purpose of air preheater, but NH4HSO4Having the strongest viscosity, scraping effect is undesirable, and blocking-proof result is poor.
Based on above reason, for efficiently solving above-mentioned air preheater heated surface corrosion and the problem of blocking, new preventing and treating air preheater anticorrosion and the process system of blocking need to be developed.
Utility model content
This utility model is the problem in order to thoroughly solve to adhere to during coal-fired plant boiler runs heat-transfer surface frozen plug air preheater because generating ABS, and provides the system of a kind of heat primary air circulated in countercurrent suppression ABS frozen plug AH.
nullThe technical scheme in the invention for solving the above technical problem is: the system of this heat primary air circulated in countercurrent suppression ABS frozen plug AH includes trisector air heater、Heat exchanger fin、Cold First air pipeline、Cold secondary wind pipeline、Heat primary air pipeline and hot secondary wind pipeline，Described heat exchanger fin is positioned at trisector air heater，Described trisector air heater is provided with flue gas point storehouse、Wind separating bin and secondary air separating storehouse，The cold end of described cold First air pipeline and a wind separating bin connects，The hot junction of described heat primary air pipeline and a wind separating bin connects，Described cold secondary wind pipeline is connected with the cold end in secondary air separating storehouse，Described hot secondary wind pipeline is connected with the hot junction in secondary air separating storehouse，Described flue gas divides storehouse for connecting with flue，Its construction features is: also include heat primary air introduction pipe、Heat primary air draws flow electric control valve、Hot blast introduces hot secondary air box pipeline and hot blast introduces cold side conduits，Described trisector air heater is provided with a fanning strip，A described fanning strip includes being positioned at number fanning strip of cold end of the cold end of trisector air heater and being positioned at hot junction one fanning strip in trisector air heater hot junction，An independent adverse current heating cabinet is formed between number fanning strip of described cold end and hot junction one fanning strip，Number fanning strip of described cold end is provided with cold end voltage stabilizing chamber，Described cold end pressure stabilizing cavity indoor are provided with hot blast deflector，Described cold end voltage stabilizing chamber is provided with a several hot air spout towards the one side of heat exchanger fin，Described hot junction one fanning strip is provided with hot junction pressure balance chamber，Described hot junction pressure balance chamber is provided with several No. two hot air spouts towards the one side of heat exchanger fin，One end of described heat primary air introduction pipe and heat primary air pipeline connect，The other end of this heat primary air introduction pipe and heat primary air are drawn flow electric control valve and are connected，Described hot blast introduces one end and the connection of cold end voltage stabilizing chamber of cold side conduits，This hot blast introduces one end of cold side conduits and faces hot blast deflector，Described hot blast introduces the other end and the heat primary air extraction flow electric control valve connection of cold side conduits，Described hot blast introduces one end and the connection of hot junction pressure balance chamber of hot secondary air box pipeline，This hot blast introduces the other end and the connection of hot secondary wind pipeline of hot secondary air box pipeline.
As preferably, this utility model is when the direction of rotation of trisector air heater is flue gas → First air → secondary wind, and described cold end voltage stabilizing chamber and hot junction pressure balance chamber are respectively positioned between flue gas point storehouse and secondary air separating storehouse；When the direction of rotation of trisector air heater is flue gas → secondary wind → First air, described cold end voltage stabilizing chamber and hot junction pressure balance chamber are respectively positioned between flue gas Fen Cang and a wind separating bin.
As preferably, a hot air spout described in the utility model and No. two hot air spouts are slit shape structure.
As preferably, hot blast deflector described in the utility model is flat structure.
As preferably, hot blast deflector described in the utility model is positioned at directly over the outlet of one end that hot blast introduces cold side conduits.
As preferably, number fanning strip of cold end described in the utility model and hot junction one fanning strip are overlapping along the axial direction of trisector air heater.
As preferably, a fanning strip described in the utility model is fixed on the central truss of trisector air heater.
As preferably, the width of cold end voltage stabilizing chamber described in the utility model and hot junction pressure balance chamber is respectively less than the width between adjacent two apex seals of trisector air heater.
As preferably, in one end of hot blast described in the utility model introducing cold side conduits and cold end voltage stabilizing chamber, the one side of heat exchanger fin connects dorsad, and in one end of the described hot blast hot secondary air box pipeline of introducing and hot junction pressure balance chamber, the one side of heat exchanger fin connects dorsad.
A kind of method of heat primary air circulated in countercurrent suppression ABS frozen plug AH using described system to carry out, its feature is: the step of described method is as follows: SCR exiting flue gas enters trisector air heater heat exchange through flue, and the flue gas after heat exchange flows to downstream cleaner unit after flowing through flue；nullCold First air and cold secondary wind respectively by cold First air pipeline and cold secondary wind pipeline after trisector air heater heats，Flow out along heat primary air pipeline and hot secondary wind pipeline respectively，When unit is when properly functioning，The heat primary air of partial high pressure is drawn from heat primary air introduction pipe，Adjust to desired flow through heat primary air extraction flow electric control valve and introduce cold end voltage stabilizing chamber，Heat exchanger fin is inversely sprayed into along flue gas again by a hot air spout，By hot blast adverse current heating，On the one hand the ABS that the cold end of high-temperature evaporation trisector air heater generates，On the other hand trisector air heater cold end integrated temperature is improved，Suppression ABS frozen plug AH，Also there is purging effect in the heat primary air exchange backing of high pressure simultaneously，Finally introduce hot secondary air box pipeline through hot blast and cause hot secondary wind pipeline and enter burner hearth together with hot secondary wind and participate in burning.
This utility model compared with prior art, has the following advantages and effect: effective solution causes air preheater to block serious problem because generation ABS adheres to heat-transfer surface during coal-fired plant boiler runs.Adverse current at AH cold junction temperature lowest temperature is heated by this utility model by heat primary air, air preheater cold end integrated temperature is improved while the ABS that the cold end of high-temperature evaporation generates, suppression ABS frozen plug AH, solves to solidify, because generation ABS adheres to heat-transfer surface, the problem causing air preheater blocking serious during coal-fired plant boiler runs with this.
Accompanying drawing explanation
Fig. 1 is the structural representation of the system of heat primary air circulated in countercurrent suppression ABS frozen plug AH in this utility model embodiment.
Fig. 2 is the structural representation of trisector air heater in this utility model embodiment.
Fig. 3 is the structural representation of a cold number fanning strip of end in this utility model embodiment.
Fig. 4 be in Fig. 3 B to structural representation.
Fig. 5 is the sectional structure schematic diagram in D-D face in Fig. 3.
Fig. 6 is the sectional structure schematic diagram in C-C face in Fig. 4.
Fig. 7 is the structural representation of number fanning strip in hot junction in this utility model embodiment.
Fig. 8 be in Fig. 7 E to structural representation.
Fig. 9 is the sectional structure schematic diagram in F-F face in Fig. 7.
Figure 10 is the sectional structure schematic diagram in G-G face in Fig. 8.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings and by embodiment, and following example are that this utility model is not limited to following example to explanation of the present utility model.
Embodiment.
Seeing Fig. 1 to Figure 10, in the present embodiment, the system of heat primary air circulated in countercurrent suppression ABS frozen plug AH includes that trisector air heater 1, heat exchanger fin 2, cold First air pipeline 7, cold secondary wind pipeline 8, heat primary air pipeline 9, hot secondary wind pipeline 10, heat primary air introduction pipe 11, heat primary air draw flow electric control valve 13, hot blast introduces hot secondary air box pipeline 14 and hot blast introduces cold side conduits 15.
Heat exchanger fin 2 in the present embodiment is positioned at trisector air heater 1, trisector air heater 1 is provided with flue gas Fen Cang, a wind separating bin and secondary air separating storehouse, cold First air pipeline 7 is connected with the cold end of a wind separating bin, heat primary air pipeline 9 is connected with the hot junction of a wind separating bin, cold secondary wind pipeline 8 is connected with the cold end in secondary air separating storehouse, hot secondary wind pipeline 10 is connected with the hot junction in secondary air separating storehouse, and flue gas point storehouse is for connecting with flue 17.
Trisector air heater 1 in the present embodiment is provided with a fanning strip 3, a number fanning strip 3 includes being positioned at number fanning strip 3-1 of cold end of the cold end of trisector air heater 1 and being positioned at the hot junction one fanning strip 3-2 in trisector air heater 1 hot junction, forms an independent adverse current heating cabinet between number fanning strip 3-1 of cold end and hot junction one fanning strip 3-2.
Number fanning strip 3-1 of cold end in the present embodiment is provided with cold end voltage stabilizing chamber 6, it is provided with hot blast deflector 19 in cold end voltage stabilizing chamber 6, cold end voltage stabilizing chamber 6 is provided with a several hot air spout 20 towards the one side of heat exchanger fin 2, hot junction one fanning strip 3-2 is provided with hot junction pressure balance chamber 5, and hot junction pressure balance chamber 5 is provided with several No. two hot air spouts 21 towards the one side of heat exchanger fin 2.
One end and the heat primary air pipeline 9 of the heat primary air introduction pipe 11 in the present embodiment connect, the other end of this heat primary air introduction pipe 11 and heat primary air are drawn flow electric control valve 13 and are connected, one end and the cold end voltage stabilizing chamber 6 of hot blast introducing cold side conduits 15 connect, this hot blast introduces one end of cold side conduits 15 and faces hot blast deflector 19, the other end of hot blast introducing cold side conduits 15 and heat primary air are drawn flow electric control valve 13 and are connected, one end and the hot junction pressure balance chamber 5 of the hot blast hot secondary air box pipeline 14 of introducing connect, the other end and the hot secondary wind pipeline 10 of this hot blast hot secondary air box pipeline 14 of introducing connect.
When the direction of rotation of trisector air heater 1 is flue gas → First air → secondary wind, cold end voltage stabilizing chamber 6 and hot junction pressure balance chamber 5 in the present embodiment are respectively positioned between flue gas point storehouse and secondary air separating storehouse；When the direction of rotation of trisector air heater 1 is flue gas → secondary wind → First air, cold end voltage stabilizing chamber 6 and hot junction pressure balance chamber 5 in the present embodiment are respectively positioned between flue gas Fen Cang and a wind separating bin.
A hot air spout 20 and No. two hot air spouts 21 in the present embodiment are slit shape structure.Hot blast deflector 19 is flat structure.Hot blast deflector 19 is positioned at directly over the outlet of one end that hot blast introduces cold side conduits 15.Number fanning strip 3-1 of cold end and hot junction one fanning strip 3-2 is overlapping on the axial direction along trisector air heater 1.A number fanning strip 3 is fixed on the central truss 28 of trisector air heater 1.The width of cold end voltage stabilizing chamber 6 and hot junction pressure balance chamber 5 is respectively less than the width between adjacent two apex seals of trisector air heater 1.In one end of hot blast introducing cold side conduits 15 and cold end voltage stabilizing chamber 6, the one side of heat exchanger fin 2 connects dorsad, and in one end of the hot blast hot secondary air box pipeline 14 of introducing and hot junction pressure balance chamber 5, the one side of heat exchanger fin 2 connects dorsad.
Coal-burning power plant air preheater hot blast adverse current in the present embodiment is the most anti-blocking and the step of the technique of corrosion is as follows: SCR exiting flue gas enters trisector air heater 1 heat exchange through flue 17, and the exiting flue gas after heat exchange flows to downstream cleaner unit after flowing through flue 17；nullCold First air and cold secondary wind respectively by cold First air pipeline 7 and cold secondary wind pipeline 8 after trisector air heater 1 heats，Flow out along heat primary air pipeline 9 and hot secondary wind pipeline 10 respectively，When unit is when properly functioning，By heat primary air (the about 10kPa of partial high pressure，350 DEG C) draw from heat primary air introduction pipe 11，Adjust to desired flow through heat primary air extraction flow electric control valve 13 and introduce cold end voltage stabilizing chamber 6，Heat exchanger fin 2 is inversely sprayed into along flue gas again by a hot air spout 20，By hot blast adverse current heating，On the one hand the ABS that the cold end of high-temperature evaporation trisector air heater 1 generates，On the other hand trisector air heater 1 cold end integrated temperature is improved，Suppression ABS frozen plug AH，Also there is purging effect in the heat primary air exchange backing 2 of high pressure simultaneously，Finally introduce hot secondary air box pipeline 14 through hot blast and cause hot secondary wind pipeline 10 and enter burner hearth together with hot secondary wind and participate in burning.
Trisector air heater 1 usually three points of storehouse syntype structure rotary regenerative air preheaters of typical case in the present embodiment, being also provided with No. two fanning strips 4 on trisector air heater 1, No. two fanning strips 4 include No. two fanning strip 4-1 of cold end and hot junction two fanning strip 4-2.
Air preheater rotational order is flue gas → First air → secondary wind, voltage stabilizing chamber 6 is isolated near secondary wind side at fanning strip 3-1, the plane steel plate of the close heat exchanger fin 2 of voltage stabilizing chamber 6 is outputed slit shape spout 30, its opposite planar steel plate is outputed circular hot-wind inlet and is connected with hot blast introducing cold side conduits 15；Pressure balance chamber 5 is isolated near secondary wind survey at fanning strip 3-2, the plane steel plate of the close heat exchanger fin 2 of pressure balance chamber 5 is outputed slit shape spout 31, its opposite planar steel plate is outputed circular hot-blast outlet and is connected with the hot blast hot secondary air box pipeline 1 of introducing.
As shown in Figures 3 to 10, hot blast introduces cold side conduits 15 and hot blast introduces hot secondary air box pipeline 14 and leads in/out cold end voltage stabilizing chamber 6 and hot junction pressure balance chamber 5 respectively, in cold end voltage stabilizing chamber 6, corresponding hot blast introduces cold side conduits 15 equipped with plate hot blast deflector 19, plate hot blast deflector 19 introduces the surface of cold side conduits 15 outlet at hot blast, essentially identical to realize each spout flow of a hot air spout 20 of each slit in cold end voltage stabilizing chamber 6.
Trisector air heater 1 rotational order in the present embodiment is flue gas → First air → secondary wind, cold end voltage stabilizing chamber 6 is isolated near secondary wind side at number fanning strip 3-1 of cold end, on the plane steel plate of heat exchanger fin 2, output a hot air spout 20 of slit shape at cold end voltage stabilizing chamber 6, its opposite planar steel plate is outputed circular hot-wind inlet and is connected with hot blast introducing cold side conduits 15.When the rotational order of trisector air heater 1 is flue gas → secondary wind → First air, only need to cold end voltage stabilizing chamber 6, hot junction pressure balance chamber 20, No. two hot air spouts 21 of 5, hot air spout be arranged in the fanning strip of a number fanning strip 3-2 radial symmetric of number fanning strip 3-1 of cold end and hot junction, its cold end voltage stabilizing chamber 6 and hot junction pressure balance chamber 5 also should be near First air sides.
The present embodiment is by hot blast adverse current heating, on the one hand the ABS that the cold end of high-temperature evaporation generates, on the other hand air preheater cold end integrated temperature can be improved, suppression ABS frozen plug AH, also there is purging effect in high-pressure hot wind heat exchanging element simultaneously, can effectively solve, with this, the problem that during coal-fired plant boiler (especially burning high sulfur coal burning boiler) runs, air preheater heat-transfer surface inlet outlet pressure differential is relatively big, blocking is the most serious.
" ABS " described in this utility model refers to ammonium hydrogen sulfate, and " AH " refers to air preheater, and this is known to those skilled in the art general knowledge.
Furthermore, it is necessary to illustrate, the specific embodiment described in this specification, the shape of its parts and components, be named title etc. can be different, and the above content described in this specification is only to this utility model structure example explanation.All equivalence changes done according to structure, feature and the principle described in this utility model inventional idea or simple change, be all included in the protection domain of this utility model patent.Described specific embodiment can be made various amendment or supplements or use similar mode to substitute by this utility model person of ordinary skill in the field; without departing from structure of the present utility model or surmount scope defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (9)
- null1. the system of heat primary air circulated in countercurrent suppression ABS frozen plug AH，Including trisector air heater (1)、Heat exchanger fin (2)、Cold First air pipeline (7)、Cold secondary wind pipeline (8)、Heat primary air pipeline (9) and hot secondary wind pipeline (10)，Described heat exchanger fin (2) is positioned at trisector air heater (1)，Described trisector air heater (1) is provided with flue gas point storehouse、Wind separating bin and secondary air separating storehouse，Described cold First air pipeline (7) is connected with the cold end of a wind separating bin，Described heat primary air pipeline (9) is connected with the hot junction of a wind separating bin，Described cold secondary wind pipeline (8) is connected with the cold end in secondary air separating storehouse，Described hot secondary wind pipeline (10) is connected with the hot junction in secondary air separating storehouse，Described flue gas divides storehouse for connecting with flue (17)，It is characterized in that: also include heat primary air introduction pipe (11)、Heat primary air draws flow electric control valve (13)、Hot blast introduces hot secondary air box pipeline (14) and hot blast introduces cold side conduits (15)，Described trisector air heater (1) is provided with a fanning strip (3)，A described fanning strip (3) includes number fanning strip (3-1) of cold end being positioned at trisector air heater (1) cold end and is positioned at hot junction one fanning strip (3-2) in trisector air heater (1) hot junction，An independent adverse current heating cabinet is formed between number fanning strip (3-1) of described cold end and hot junction one fanning strip (3-2)，Number fanning strip (3-1) of described cold end is provided with cold end voltage stabilizing chamber (6)，It is provided with hot blast deflector (19) in described cold end voltage stabilizing chamber (6)，Described cold end voltage stabilizing chamber (6) is provided with a several hot air spout (20) towards the one side of heat exchanger fin (2)，Described hot junction one fanning strip (3-2) is provided with hot junction pressure balance chamber (5)，Described hot junction pressure balance chamber (5) is provided with several No. two hot air spouts (21) towards the one side of heat exchanger fin (2)，One end of described heat primary air introduction pipe (11) and heat primary air pipeline (9) connect，The other end of this heat primary air introduction pipe (11) and heat primary air are drawn flow electric control valve (13) and are connected，Described hot blast introduces one end and the connection of cold end voltage stabilizing chamber (6) of cold side conduits (15)，This hot blast introduces one end of cold side conduits (15) and faces hot blast deflector (19)，Described hot blast introduces the other end and heat primary air extraction flow electric control valve (13) connection of cold side conduits (15)，Described hot blast introduces one end and hot junction pressure balance chamber (5) connection of hot secondary air box pipeline (14)，This hot blast introduces the other end and hot secondary wind pipeline (10) connection of hot secondary air box pipeline (14).
- The system of heat primary air circulated in countercurrent the most according to claim 1 suppression ABS frozen plug AH, it is characterized in that: when the direction of rotation of trisector air heater (1) is flue gas → First air → secondary wind, described cold end voltage stabilizing chamber (6) and hot junction pressure balance chamber (5) are respectively positioned between flue gas point storehouse and secondary air separating storehouse；When the direction of rotation of trisector air heater (1) is flue gas → secondary wind → First air, described cold end voltage stabilizing chamber (6) and hot junction pressure balance chamber (5) are respectively positioned between flue gas Fen Cang and a wind separating bin.
- The system of heat primary air circulated in countercurrent the most according to claim 1 suppression ABS frozen plug AH, it is characterised in that: a described hot air spout (20) and No. two hot air spouts (21) are slit shape structure.
- The system of heat primary air circulated in countercurrent the most according to claim 1 suppression ABS frozen plug AH, it is characterised in that: described hot blast deflector (19) is flat structure.
- The system of heat primary air circulated in countercurrent the most according to claim 1 suppression ABS frozen plug AH, it is characterised in that: described hot blast deflector (19) is positioned at directly over the outlet of one end that hot blast introduces cold side conduits (15).
- The system of heat primary air circulated in countercurrent the most according to claim 1 suppression ABS frozen plug AH, it is characterised in that: number fanning strip (3-1) of described cold end and hot junction one fanning strip (3-2) are overlapping on the axial direction along trisector air heater (1).
- The system of heat primary air circulated in countercurrent the most according to claim 1 suppression ABS frozen plug AH, it is characterised in that: a described fanning strip (3) is fixed on the central truss (28) of trisector air heater (1).
- The system of heat primary air circulated in countercurrent the most according to claim 1 suppression ABS frozen plug AH, it is characterised in that: the width of described cold end voltage stabilizing chamber (6) and hot junction pressure balance chamber (5) is respectively less than the width between adjacent two apex seals of trisector air heater (1).
- The system of heat primary air circulated in countercurrent the most according to claim 1 suppression ABS frozen plug AH, it is characterized in that: in one end of described hot blast introducing cold side conduits (15) and cold end voltage stabilizing chamber (6), the one side of heat exchanger fin (2) connects dorsad, in one end of the described hot blast hot secondary air box pipeline (14) of introducing and hot junction pressure balance chamber (5), the one side of heat exchanger fin (2) connects dorsad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620404029.0U CN205746956U (en) | 2016-05-06 | 2016-05-06 | The system of heat primary air circulated in countercurrent suppression ABS frozen plug AH |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620404029.0U CN205746956U (en) | 2016-05-06 | 2016-05-06 | The system of heat primary air circulated in countercurrent suppression ABS frozen plug AH |
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| CN205746956U true CN205746956U (en) | 2016-11-30 |
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| CN201620404029.0U Withdrawn - After Issue CN205746956U (en) | 2016-05-06 | 2016-05-06 | The system of heat primary air circulated in countercurrent suppression ABS frozen plug AH |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864816A (en) * | 2016-05-06 | 2016-08-17 | 华电电力科学研究院 | System and method for inhibiting AH blockage due to ABS solidification through hot primary air countercurrent circulation |
| CN107477608A (en) * | 2017-09-25 | 2017-12-15 | 长沙天瑞能源科技有限公司 | Air preheater hot blast automatic block clearing anti-blocking system |
| CN108826348A (en) * | 2018-05-11 | 2018-11-16 | 宁夏马连富电力科技有限公司 | The air pre-heater with rotary heating surface of blocking rotor ash can be reduced |
-
2016
- 2016-05-06 CN CN201620404029.0U patent/CN205746956U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864816A (en) * | 2016-05-06 | 2016-08-17 | 华电电力科学研究院 | System and method for inhibiting AH blockage due to ABS solidification through hot primary air countercurrent circulation |
| CN105864816B (en) * | 2016-05-06 | 2018-08-07 | 华电电力科学研究院 | Heat primary air circulated in countercurrent inhibits the system and method for ABS frozen plugs AH |
| CN107477608A (en) * | 2017-09-25 | 2017-12-15 | 长沙天瑞能源科技有限公司 | Air preheater hot blast automatic block clearing anti-blocking system |
| CN108826348A (en) * | 2018-05-11 | 2018-11-16 | 宁夏马连富电力科技有限公司 | The air pre-heater with rotary heating surface of blocking rotor ash can be reduced |
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