CN208382203U - A kind of dehumidifying decontamination heating of flue gas condensing disappears white heat exchanger structure - Google Patents
A kind of dehumidifying decontamination heating of flue gas condensing disappears white heat exchanger structure Download PDFInfo
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- CN208382203U CN208382203U CN201820770203.2U CN201820770203U CN208382203U CN 208382203 U CN208382203 U CN 208382203U CN 201820770203 U CN201820770203 U CN 201820770203U CN 208382203 U CN208382203 U CN 208382203U
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- decontamination
- gas
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- 239000003546 flue gas Substances 0.000 title claims abstract description 103
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 238000005202 decontamination Methods 0.000 title claims abstract description 75
- 230000003588 decontaminative effect Effects 0.000 title claims abstract description 75
- 238000010438 heat treatment Methods 0.000 title claims abstract description 26
- 238000009833 condensation Methods 0.000 claims abstract description 62
- 230000005494 condensation Effects 0.000 claims abstract description 62
- 239000000779 smoke Substances 0.000 claims abstract description 32
- 238000007791 dehumidification Methods 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 73
- 239000007789 gas Substances 0.000 claims description 51
- 206010022000 influenza Diseases 0.000 claims description 12
- 238000007747 plating Methods 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 7
- 230000007797 corrosion Effects 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 5
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 5
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 4
- 229910000632 Alusil Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 239000008400 supply water Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- 239000010962 carbon steel Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 230000009970 fire resistant effect Effects 0.000 claims 1
- 230000002087 whitening effect Effects 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 description 8
- 235000019504 cigarettes Nutrition 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000005022 packaging material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000003416 augmentation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Drying Of Gases (AREA)
Abstract
一种烟气冷凝除湿脱污加热消白的换热器结构，由水平烟道、U型烟道和烟气调节挡板构成；烟气经水平烟道折转90°进入U型烟道冲刷显热换热器和一级冷凝除湿脱污换热器，折转180°后冲刷二级冷凝除湿脱污换热器和烟气再热器；经过一级、二级冷凝除湿脱污换热器除湿后，再利用烟气再热器完成加热除湿消白；水平烟道中间位于U型烟道的分割板上设置有烟气调节挡板，该挡板一方面在系统启动或停炉后可保证烟气直接进入烟囱以防止显热换热器发生冷凝，另一方面，当外界天气湿度发生变化或极端寒冷天气出现时，调节烟气挡板的开度可将一部分干烟气和湿烟气进行混合，保证全工况条件下更有效地消除烟囱白烟。
A heat exchanger structure for flue gas condensation, dehumidification, decontamination, heating and whitening is composed of a horizontal flue, a U-shaped flue and a flue gas adjusting baffle; The sensible heat exchanger and the primary condensing dehumidification and decontamination heat exchanger are turned 180° to flush the secondary condensing dehumidification and decontamination heat exchanger and flue gas reheater; After dehumidification, the flue gas reheater is used to complete heating, dehumidification and whitening; a flue gas adjustment baffle is arranged on the dividing plate of the U-shaped flue in the middle of the horizontal flue. It can ensure that the flue gas enters the chimney directly to prevent condensation in the sensible heat exchanger. The flue gas is mixed to ensure that the chimney white smoke is more effectively eliminated under all working conditions.
Description
Technical field
The utility model belongs to the dehumidifying of gas fired-boiler flue gas and takes off white, energy conservation and environmental protection, and in particular to a kind of flue gas condensing
The white heat exchanger structure that disappears is heated in dehumidifying decontamination.
Background technique
Although oil and natural gas combustion system combustion product cleans, but still containing nitrogen oxides and a small amount of oxysulfide and
PM.Compared with coal-burning boiler, excessive chloride ion is not contained in flue gas, but contains more vapor.Flue gas is directly discharged to
In atmosphere institute's containing water vapor supersaturation condensation in flue gas can form " visual pollution " to form white plume；In flue gas
SO3/H2SO4Equal sour gas and PM, which are combined, can also form local haze around chimney and it is made to enhance and spread, meanwhile,
SO3/H2SO4Equal sour gas condensation in back-end ductwork and chimney, has extremely strong corrosivity, to the peace of boiler system
Row for the national games brings hidden danger.Contain a large amount of vapor in white plume simultaneously, causes the waste of water resource.If being condensed back to
It receives, valuable water resource can be saved.It launches respectively region plume and administers new rule, flue gas in the ground such as Shanghai, Zhejiang, Handan, Tianjin
The dehumidifying decontamination white significance level that disappears has some idea of.
It is that flue gas reheat takes off white device that major part flue gas, which takes off white device, at present, and heating wet flue gas is warming up to superheat state with de-
Except white plume.Flue gas reheat take off it is white easily cause smoke re-heater to corrode and blocking, and flue gas is caused to 80 DEG C
The significant wastage of the energy.The SO in wet flue gas can not be eliminated by eliminating white cigarette using heating3/H2SO4Equal sour gas and PM, and
SO3/H2SO4It is one of the arch-criminal of haze with PM.Therefore SO can significantly be removed3/H2SO4White technology is taken off with the flue gas condensing of PM to open
Beginning gradually promotes.
Flue gas condensing dehumidifying decontamination heating disappears the wet flue gas that generates after Brix boiler feedwater or circulating water burning, together
Condensation phase change heat in Shi Huishou vapor, improves boiler efficiency.In cooling procedure Water vapor condensation at submicron order small liquid
Drop can also SO in a large amount of adsorbing and removing flue gases3/H2SO4And PM.However the sulfuric acid solution that condensation generates has stronger corrosion
Property, the material of heat exchanging device proposes requirement.
Flue gas reheat and dehumidification by condensation take off whitening method, respectively there is an advantage and disadvantage, and the utility model is by flue gas condensing and reheating knot
It is combined, so that dehumidifying decontamination disappears, white effect is more significant.
Summary of the invention
In order to further improve the advantages of flue gas dehumidifying decontamination disappears white effect, plays the above-mentioned prior art, the utility model
A kind of flue gas condensing dehumidifying decontamination heating that is designed to provide disappear white heat exchanger structure.
In order to achieve the above purposes, the technical solution adopted by the utility model is:
A kind of dehumidifying decontamination heating of flue gas condensing disappears white heat exchanger structure, including U-shaped flue 1, on U-shaped 1 top of flue
For one section of horizontal flue 2, U-shaped 1 gas inlet side ducts of flue are disposed with sensible heat exchanger 3 and level-one dehumidification by condensation from top to bottom
Decontamination heat exchanger 4, U-shaped 1 bottom of flue are 180 ° of rotary flues 5, and U-shaped 1 exhanst gas outlet side of flue is disposed with two from bottom to top
Grade dehumidification by condensation decontamination heat exchanger 6, corrugated plate dst demister 13 and smoke re-heater 7；It is located at U-shaped flue 1 among horizontal flue 2
Gas proportioning damper 8 is provided in gas inlet side and exhanst gas outlet side reticle；There are water pipe connection, second level between each heat exchanger
6 end of dehumidification by condensation decontamination heat exchanger is water supply water inlet line by the pipeline of near wall, and boiler feedwater is successively with flue gas in adverse current
After B-grade condensation dehumidifying decontamination heat exchanger 6, level-one dehumidification by condensation decontamination heat exchanger 4 and sensible heat exchanger 3 are heated into hot water,
Flue gas disappears white when part enters the heating of smoke re-heater 7, and mixes through water mixing valve 9 with main flow outlet hot water and be sent into boiler；Just
Under normal operating condition, gas proportioning damper 8 is closed, and flue gas turns back 90 ° by U-shaped 1 smoke inlet of flue by 2 front half section of horizontal flue
Into gas inlet side, in gas inlet side cross-flow tube bank from top to bottom, successively changed by sensible heat by flue and tube bank gap
Hot device 3, level-one dehumidification by condensation decontamination heat exchanger 4, after turning at 180 ° of rotary flues 5, exhanst gas outlet side from bottom to top
It is horizontal plunder to turn back 90 ° after B-grade condensation dehumidifying decontamination heat exchanger 6, corrugated plate dst demister 13 and smoke re-heater 7 enter horizontal cigarettes
2 second half section of road is simultaneously discharged into chimney；Under extreme operating conditions, gas proportioning damper 8 is opened as needed, and partial fume is by level
2 front half section of flue flows directly into 2 second half section of horizontal flue, with another part after the wet flue gas that U-shaped flue 1 comes out mixes,
Discharge.
180 ° of rotary 5 bottoms of flue are provided with the condensate drain 10 with water seal, collect and come from U-shaped flue
The condensed water of flue gas and corrugated plating demister 13 in 1 exhanst gas outlet side.
The sensible heat exchanger 3, level-one dehumidification by condensation decontamination heat exchanger 4, B-grade condensation dehumidifying decontamination heat exchanger 6 and flue gas
Reheater 7 is made of one or more layers tube bank in-line or stagger arrangement, tube bank 1 section of Vertical U-type flue arrangement.
The level-one dehumidification by condensation decontamination heat exchanger 4, B-grade condensation dehumidifying decontamination heat exchanger 6 and smoke re-heater 7 belong to
Low-temperature heat exchange using enhanced heat transfer component, and uses alusil alloy or austenitic stainless steel casting, forges and presses or be welded, with
Resist the acid corrosion of the condensed water of oil-burning gas-fired boiler discharge flue gas.
A kind of dehumidifying decontamination heating of flue gas condensing disappears white heat exchanger structure, including U-shaped flue 1, in U-shaped 1 lower part of flue
For one section of horizontal flue 2, U-shaped 1 gas inlet side ducts of flue are disposed with sensible heat exchanger 3, and U-shaped 1 bottom of flue is 180 ° and returns
Rotatable flue 5, U-shaped 1 exhanst gas outlet side of flue are disposed with B-grade condensation dehumidifying decontamination heat exchanger 6, dehumidification by condensation decontamination heat exchanger 6
It is connected to sensible heat exchanger 3 by water pipe；It is located at U-shaped 1 gas inlet side of flue and exhanst gas outlet side reticle among horizontal flue 2
On be provided with gas proportioning damper 8；B-grade condensation dehumidifying 6 end of decontamination heat exchanger is water supply water inlet pipe by the pipeline of near wall
Road, U-shaped 1 exhanst gas outlet side of flue underface is provided with collecting tank 14 and the condensate drain 10 with water seal, in collecting tank
14 are provided with corrugated plating demister 13 close at horizontal flue 2, and 2 second half section of horizontal flue is provided with smoke re-heater 7, and flue gas is again
Hot device 7 is connected to sensible heat exchanger 3 by water pipe；Boiler feedwater successively exchanges heat in adverse current by B-grade condensation dehumidifying decontamination with flue gas
Device 6 and sensible heat exchanger 3 are heated into hot water, and 3 outlet hot water of sensible heat exchanger is controlled by the water mixing valve 9 being arranged in outside U-shaped flue 1
System, flue gas disappears white when a part of hot water being made to enter the heating of smoke re-heater 7, and mixes and send with main flow outlet hot water through water mixing valve 9
Enter boiler；Flue gas is turned back 90 ° by 2 front half section of horizontal flue enters gas inlet side by U-shaped 1 smoke inlet of flue, flue gas into
Mouthful side is horizontal to plunder flue and sensible heat exchanger 3 restrains gap, after turning at 180 ° of rotary flues 5, plunders exhanst gas outlet side is horizontal
It turns back 90 ° after B-grade condensation dehumidifying decontamination heat exchanger 6 and enters 2 second half section of horizontal flue, pass through one by corrugated plating demister 13
Section horizontal flue rectification is discharged into chimney after entering smoke re-heater 7.
The sensible heat exchanger 3, B-grade condensation dehumidifying decontamination heat exchanger 6 and smoke re-heater 7 are by one or more layers tube bank
In-line or stagger arrangement composition, tube bank 1 section of Vertical U-type flue arrangement.
The B-grade condensation dehumidifying decontamination heat exchanger 6 and smoke re-heater 7 belong to low-temperature heat exchange, using augmentation of heat transfer member
Part, and use alusil alloy or austenitic stainless steel casting, forge and press or be welded, to resist oil-burning gas-fired boiler discharge flue gas
Condensed water acid corrosion.
It is cold to avoid flue gas generation higher than flue gas aqueous dew point temperature that the sensible heat exchanger 3 need to control its Inlet water temperature
Solidifying, sensible heat exchanger 3 uses carbon steel enhanced heat transfer component.
2 front half section of horizontal flue, 2 90 ° of turning flues of 2 second half section of horizontal flue and 180 ° of rotary flues 5
It is designed to isobaric flue, and flow distribution plate 12 is set in isobaric flue outlet, meanwhile, in order to obtain more uniform temperature field, concentration
Field and velocity field improve flue gas heat and mass validity, and gas inlet section, which is provided with, flows grid 11.
The water mixing valve 9 passes through to adjust and heats wet flue gas in addition to the function of mixing mainstream hot water and heating wet flue gas hot water
Hot water flow can full working scope eliminate because atmospheric humidity variation or extreme cold weather occur when white cigarette.
The utility model using flue gas condensing and again thermal technology combine realize flue gas dehumidifying disappear it is white, that is, utilize sensible heat transfer
Flue gas is cooled to the temperature that does not condense completely by device 3, and (the working medium entrances temperature of design is 60 DEG C, metal wall surface temperature at this time
Higher than aqueous dew point temperature)；Flue-gas temperature is further decreased using level-one dehumidification by condensation decontamination heat exchanger 4, part water steams in flue gas
Air cooling is solidifying, part SO3Or H2SO4Also it will condense, dense H can be generated2SO4Dew point corrosion should choose the ND steel making heat exchanger；
And the effect of B-grade condensation dehumidifying decontamination heat exchanger 6 is so that most of vapor in flue gas is generated condensation, while recycling remaining
Sensible heat and the latent heat of vaporization become dilute acid soln, have stronger corrosivity at this point, being precipitated since vapor starts largely to condense,
Austenitic stainless steel or cast aluminium silicon alloy should be chosen.
To prevent vapor from continuing to condense in subsequent flue, the corrosion of flue is caused, service life is influenced, this is practical new
Type prevents flue gas from continuing to condense in flue using the method for flue gas reheat, and there are mainly two types of solutions below.
First method is to increase a smoke re-heater 7 in the back of B-grade condensation dehumidifying decontamination heat exchanger 6, in pipe
The hot water that heat-exchange working medium is exported from sensible heat exchanger 3, water supply is by B-grade condensation dehumidifying decontamination heat exchanger 6 and sensible heat exchanger
3 have had a quite high temperature, about 80~93 DEG C afterwards, and the flue-gas temperature that B-grade condensation dehumidifying decontamination heat exchanger 6 exports
Only 40 DEG C, heating low-temperature flue gas with outlet hot water increases flue-gas temperature, and remove smoke the water droplet formed when condensing, makes flue gas
In vapor overheat, prevent from continuing to condense in the flue of vapor behind.
Second method is that installation gas proportioning damper 8, the overwhelming majority of boiler exhaust gas flow through sensible heat in horizontal flue 2
Heat exchanger 3, level-one dehumidification by condensation decontamination heat exchanger 4 and B-grade condensation dehumidifying decontamination heat exchanger 6 discharge sensible heat and the latent heat of vaporization, cigarette
Temperature degree reduces, and vapor reaches saturation state in flue gas；The smoke evacuation of an only small part is flowed directly to by gas proportioning damper 8
Underflue, and mixed with the low-temperature flue gas containing saturated steam, overheat is generated after so that the saturated steam in flue gas is absorbed heat,
It prevents from generating condensation in the flue of vapor behind.
To make again thermal effect more significant, thoroughly dehumidifying heating disappears white, can combine both the above method.
Detailed description of the invention
Fig. 1 is the design scheme that the utility model has smoke re-heater and flue-gas temperature regulating valve.
Fig. 2 is second of design scheme of the utility model.
Fig. 3 is the utility model flow distribution plate schematic diagram.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
Referring to Fig. 1, the white heat exchanger structure that disappears is heated in a kind of flue gas condensing dehumidifying decontamination of the utility model, in U-shaped flue 1
Top is one section of horizontal flue 2, and U-shaped 1 gas inlet side ducts of flue are disposed with stream grid 11, sensible heat exchanger from top to bottom
3, level-one dehumidification by condensation decontamination heat exchanger 4, U-shaped 1 bottom of flue are 180 ° of rotary flues 5, and U-shaped 1 exhanst gas outlet side of flue is certainly
It turns back 90 ° after B-grade condensation dehumidifies decontamination heat exchanger 6, corrugated plate dst demister 13 and smoke re-heater 7 on down and enters water
Flat 2 second half section of flue is simultaneously discharged into chimney, and U-shaped 1 gas inlet side of flue and exhanst gas outlet side reticle are located among horizontal flue 2
On be provided with gas proportioning damper 8.Boiler feedwater is successively in adverse current by B-grade condensation dehumidifying decontamination heat exchanger 6 and level-one condensation
Dehumidifying decontamination heat exchanger 4 and sensible heat exchanger 3 be heated into after hot water partially enter smoke re-heater 7 heat when flue gas disappear it is white, and
It is mixed through water mixing valve 9 with main flow outlet hot water and is sent into boiler.180 ° of rotary 5 bottoms of flue equipped with the condensed water row with water seal
Device 10 is put, condensed water can be discharged and prevents air from entering flue.Gas proportioning damper 8 is closed in normal working conditions,
Flue gas from boiler fully enters U-shaped flue 1, plunders heat exchanger tube by the way that heat exchanger tube gap is horizontal, flue gas is changed in sensible heat
Be cooled in hot device 3 do not condense temperature (the working medium entrances temperature of design be 60 DEG C, at this time metal wall surface temperature be higher than water
Dew-point temperature)；Into level-one dehumidification by condensation decontamination heat exchanger 4, part vapor and part SO at this time3Or H2SO4It will occur cold
It is solidifying, to realize desulfurization；Condensation is generated into most of vapor in flue gas in B-grade condensation dehumidifying decontamination heat exchanger 6, together
The remaining sensible heat of Shi Huishou and the latent heat of vaporization；It causes to corrode to avoid flue gas from continuing condensation in flue below, on the one hand with aobvious
(about 80~93 DEG C) heating flue gases of outlet hot water of heat exchanger 3, remove smoke the water droplet formed when condensing, makes in flue gas
Vapor overheat, prevents from continuing to condense in the flue of vapor behind, to eliminate white cigarette；On the other hand when ambient weather is wet
When degree changes or extreme cold weather occurs, the aperture for adjusting gas proportioning damper 8 can be by a part of dry flue gas and wet cigarette
Gas is mixed, and guarantees more effectively to eliminate chimney white cigarette under the conditions of full working scope；Simultaneously in B-grade condensation dehumidifying decontamination heat exchanger 6
Corrugated plating demister 13 is housed between smoke re-heater 7, the water mist for the middle carrying that can remove smoke drips, and avoids wasted heat.It is cold
But water enters U-shaped 1 exhanst gas outlet side of flue from B-grade condensation dehumidifying 6 end of decontamination heat exchanger tube bank, in the same layer pipe that successively circulates
Junior's tube bank is flowed to after beam, and by the water pipe connection between heat exchanger, successively flows to 4 He of level-one dehumidification by condensation decontamination heat exchanger
Sensible heat exchanger 3,3 outlet hot water of sensible heat exchanger are controlled by the water mixing valve 9 being arranged in outside U-shaped flue 1, make a part of hot water
Smoke re-heater 7 is flowed into control to the heating amount of flue gas, to meet the needs of different under various operating conditions.Flue gas is through being subcooled
The condensate liquid generated is condensed after solidifying dehumidifying decontamination heat exchanger flows into the condensed water elimination with water seal by 180 ° of rotary flues 5
Device 10.It dehumidifies in B-grade condensation and corrugated plating demister 13 is housed between decontamination heat exchanger 6 and smoke re-heater 7, can remove
The water mist carried secretly in flue gas avoids it from absorbing the heat of smoke re-heater 7.
Referring to fig. 2, the utility model another kind flue gas condensing dehumidifying decontamination heating disappears white heat exchanger structure, and flue gas is from water
Flat flue 2 is turned back 90 ° upwards enters U-shaped 1 gas inlet side of flue, and U-shaped 1 gas inlet side of flue is provided with stream 11 He of grid
Sensible heat exchanger 3, exhanst gas outlet side are provided with dehumidification by condensation decontamination heat exchanger 6, dehumidification by condensation decontamination heat exchanger 6 and sensible heat transfer
Device 3 is connected to by water pipe, is provided with collecting tank 14 and the condensate drain with water seal immediately below U-shaped 1 exhanst gas outlet side of flue
10, corrugated plating demister 13 is provided with close at horizontal flue 2 in collecting tank 14,2 second half section of horizontal flue is provided with flue gas again
Hot device 7 is equipped with flow distribution plate 12 at flue turning.Flue gas is first shown after entering U-shaped flue 1 from 2 front half section of horizontal flue
Heat heat exchange carries out condensing heat-exchange after 180 ° of rotary flues 5, and condensed water, which flows into collecting tank 14, passes through condensed water elimination
Device 10 is discharged, and flue gas, which is turned back 90 °, enters horizontal flue 2, enters smoke re-heater 7 again after one section of horizontal flue rectifies
Heat is discharged in 2 second half section of horizontal flue later.It equally, can opening with appropriate adjustment gas proportioning damper 8 according to actual condition
Degree makes discharge flue gas meet discharge standard.Cooling water enters U-shaped flue 1 by 6 last layer water pipe of dehumidification by condensation decontamination heat exchanger,
Junior's tube bank is successively flowed to after the tube bank of circulation same layer, and by the water pipe connection between heat exchanger, is flowed to sensible heat exchanger 3, shown
3 outlet hot water of heat exchanger is controlled by the water mixing valve 9 being arranged in outside U-shaped flue 1, and a part of hot water is made to flow into smoke re-heater
7 control to the heating amount of flue gas, to meet the needs of different under various operating conditions.
Referring to Fig. 3, the flow distribution plate 12 comprising multiple rectangle diffluence pass is provided at isobaric flue outlet.
Claims (9)
- White heat exchanger structure, including U-shaped flue (1) 1. a kind of flue gas condensing dehumidifying decontamination heating disappears, it is characterised in that: in U Type flue (1) top is one section of horizontal flue (2), and U-shaped flue (1) gas inlet side ducts are disposed with sensible heat transfer from top to bottom Device (3) and level-one dehumidification by condensation decontamination heat exchanger (4), U-shaped flue (1) bottom are 180 ° of rotary flues (5), U-shaped flue (1) Exhanst gas outlet side is disposed with B-grade condensation dehumidifying decontamination heat exchanger (6), corrugated plating demister (13) and flue gas reheat from bottom to top Device (7)；It is located in U-shaped flue (1) gas inlet side and exhanst gas outlet side reticle among horizontal flue (2) and is provided with flue gas tune It saves baffle (8)；There is water pipe connection between each heat exchanger, the pipeline of near wall is leaned in B-grade condensation dehumidifying decontamination heat exchanger (6) end For water supply water inlet line.
- The white heat exchanger structure 2. a kind of flue gas condensing dehumidifying decontamination heating according to claim 1 disappears, it is characterised in that: 180 ° of rotary flue (5) bottoms are provided with the condensate drain (10) with water seal, collect and come from U-shaped flue (1) The condensed water of flue gas and corrugated plating demister (13) in exhanst gas outlet side.
- The white heat exchanger structure 3. a kind of flue gas condensing dehumidifying decontamination heating according to claim 1 disappears, it is characterised in that: The sensible heat exchanger (3), level-one dehumidification by condensation decontamination heat exchanger (4), B-grade condensation dehumidifying decontamination heat exchanger (6) and flue gas are again Hot device (7) is made of one or more layers tube bank in-line or stagger arrangement, tube bank Vertical U-type flue (1) section arrangement.
- The white heat exchanger structure 4. a kind of flue gas condensing dehumidifying decontamination heating according to claim 1 disappears, it is characterised in that: The level-one dehumidification by condensation decontamination heat exchanger (4), B-grade condensation dehumidifying decontamination heat exchanger (6) and smoke re-heater (7) belong to low Temperature heat exchange using enhanced heat transfer component, and uses alusil alloy or austenitic stainless steel casting, forges and presses or be welded, to support Fire resistant oil gas fired-boiler discharges the acid corrosion of the condensed water of flue gas.
- White heat exchanger structure, including U-shaped flue (1) 5. a kind of flue gas condensing dehumidifying decontamination heating disappears, it is characterised in that: in U Type flue (1) lower part is one section of horizontal flue (2), and U-shaped flue (1) gas inlet side ducts are disposed with sensible heat exchanger (3), U Type flue (1) bottom is 180 ° of rotary flues (5), and U-shaped flue (1) exhanst gas outlet side is disposed with B-grade condensation dehumidifying decontamination and changes Hot device (6), dehumidification by condensation decontamination heat exchanger (6) and sensible heat exchanger (3) are connected to by water pipe；It is located among horizontal flue (2) U-shaped Gas proportioning damper (8) are provided in flue (1) gas inlet side and exhanst gas outlet side reticle；B-grade condensation dehumidifying decontamination is changed Hot device (6) end is water supply water inlet line by the pipeline of near wall, is provided with liquid collecting immediately below U-shaped flue (1) exhanst gas outlet side Slot (14) and condensate drain (10) with water seal, are provided with corrugated plating close at horizontal flue (2) in collecting tank (14) Demister (13), horizontal flue (2) second half section are provided with smoke re-heater (7), smoke re-heater (7) and sensible heat exchanger (3) It is connected to by water pipe.
- The white heat exchanger structure 6. a kind of flue gas condensing dehumidifying decontamination heating according to claim 5 disappears, it is characterised in that: The sensible heat exchanger (3), B-grade condensation dehumidifying decontamination heat exchanger (6) and smoke re-heater (7) are suitable by one or more layers tube bank Column or stagger arrangement composition, tube bank Vertical U-type flue (1) section arrangement.
- The white heat exchanger structure 7. a kind of flue gas condensing dehumidifying decontamination heating according to claim 5 disappears, it is characterised in that: B-grade condensation dehumidifying decontamination heat exchanger (6) and smoke re-heater (7) belong to low-temperature heat exchange, using enhanced heat transfer component, and It using alusil alloy or austenitic stainless steel casting, forges and presses or is welded, to resist the cold of oil-burning gas-fired boiler discharge flue gas The acid corrosion of condensate.
- 8. the white heat exchanger structure that disappears is heated in a kind of flue gas condensing dehumidifying decontamination according to claim 1 or 5, feature exists In: the sensible heat exchanger (3) need to control its Inlet water temperature and condense higher than flue gas aqueous dew point temperature to avoid flue gas, show Heat exchanger (3) uses carbon steel enhanced heat transfer component.
- 9. the white heat exchanger structure that disappears is heated in a kind of flue gas condensing dehumidifying decontamination according to claim 1 or 5, feature exists In: horizontal flue (2) front half section, 2 90 ° of turning flues of horizontal flue (2) second half section and 180 ° of rotary flues (5) It is designed to isobaric flue, and flow distribution plate (12) is set in isobaric flue outlet, meanwhile, in order to obtain more uniform temperature field, dense Field and velocity field are spent, flue gas heat and mass validity is improved, gas inlet section, which is provided with, flows grid (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820770203.2U CN208382203U (en) | 2018-05-23 | 2018-05-23 | A kind of dehumidifying decontamination heating of flue gas condensing disappears white heat exchanger structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820770203.2U CN208382203U (en) | 2018-05-23 | 2018-05-23 | A kind of dehumidifying decontamination heating of flue gas condensing disappears white heat exchanger structure |
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| CN208382203U true CN208382203U (en) | 2019-01-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109925838A (en) * | 2019-04-04 | 2019-06-25 | 华北水利水电大学 | A kind of flue gas condensing demisting disappears white device |
| CN110645709A (en) * | 2019-10-14 | 2020-01-03 | 西安交通大学 | A high-efficiency condensing gas-fired water heater and system with mixed heat exchange |
-
2018
- 2018-05-23 CN CN201820770203.2U patent/CN208382203U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109925838A (en) * | 2019-04-04 | 2019-06-25 | 华北水利水电大学 | A kind of flue gas condensing demisting disappears white device |
| CN110645709A (en) * | 2019-10-14 | 2020-01-03 | 西安交通大学 | A high-efficiency condensing gas-fired water heater and system with mixed heat exchange |
| CN110645709B (en) * | 2019-10-14 | 2023-12-19 | 西安交通大学 | A hybrid heat exchange high-efficiency condensing gas water heater and system |
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