CN202432534U - Anti-corrosion chimney with barrel wall heating device - Google Patents
Anti-corrosion chimney with barrel wall heating device Download PDFInfo
- Publication number
- CN202432534U CN202432534U CN2012200179164U CN201220017916U CN202432534U CN 202432534 U CN202432534 U CN 202432534U CN 2012200179164 U CN2012200179164 U CN 2012200179164U CN 201220017916 U CN201220017916 U CN 201220017916U CN 202432534 U CN202432534 U CN 202432534U
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- chimney
- heat transfer
- transfer tube
- heat
- barrel
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Abstract
The utility model discloses an anti-corrosion chimney with a barrel wall heating device, belongs to the field of a wet desulphurization wet smoke gas chimney, and is used for solving the problem of corrosion of wet smoke gas on the inner wall of a chimney. The chimney comprises an outer barrel and an inner barrel, wherein at least one group of heat transfer pipes are arranged between the outer barrel and the inner barrel; the liquid inlet of the heat transfer pipe is communicated with the liquid outlet of a heat exchanger by a pipeline, the liquid outlet of the heat transfer pipe is communicated with the liquid inlet of the heat exchanger, so as to form a circulation loop; and pumps are arranged on the heat transfer pipes. According to the utility model, the heat of high-temperature hot smoke gas before desulfurization is transferred to the gap between the outer barrel and the inner barrel by the liquid of the heat exchanger so as to heat the barrel wall, so that the corrosion of the wet smoke gas to the chimney lining and outer barrel is thoroughly avoided; new heat source and correlated equipment are not needed to be added, the device is simple in structure and low in total cost; and the power consumption is only used for maintaining the low-speed flowing of the hot liquid in the pipeline, so that the operating cost is very low.
Description
Technical field
The utility model relates to wet desulphurization wet flue gas chimney, be a kind of do not produce water stain, the novel chimney that urceolus and interior cover do not corrode.
Background technology
Wet desulphurization flue gas water content afterwards increases, and temperature reduces, and the condensed water that contains acid is to cause the chimney lining corrosion, and contains sour water causes the structure hidden danger through liner infiltration urceolus basic factor.In the face of this problem, still do not find the way of radical cure at present.A kind of preferably technological approaches is after desulfurization, to add heat exchanger (GGH), improves the cigarette temperature and makes it on acid is revealed, and prevents that condensation from taking place.Though this technology has caught chimney that the principal contradiction of corrosion takes place, there is the problem of three aspects in GGH.
1. heating is generally 80 ℃, still is not enough to prevent the smoke condensation phenomenon, and the chimney corrosion also happens occasionally;
2.GGH equipment investment is big, the loss in head when flue gas is flowed through is big, and operating cost is high.Heat exchange element palpus periodic cleaning and replacing, maintenance cost is also very high.
3. that causes chimney corrosion just pastes that fraction wet flue gas that barrel flows, the GGH of configuration but to all up to per hour millions of cubic metres flue gas heating is obviously very unreasonable, very uneconomical, the technical concept backwardness.
Therefore, seek new technological approaches, solve the etching problem that at present a large amount of wet flue gas chimneys occur, the potential safety hazard of radical cure chimney operation is that a ten minutes is urgently expected the Important Project actual subject that solves.
The utility model content
Can not get the basic engineering reality that solves for a long time to wet flue gas chimney etching problem; The utility model aims to provide a kind of anticorrosion chimney that is provided with the barrel heater; This anticorrosion chimney can thoroughly solve inner core and urceolus by the problem of wet flue gas corrosion through the barrel heater is set.
To achieve these goals, the technical scheme that the utility model adopted is: the said anticorrosion chimney that is provided with the barrel heater, comprise urceolus and inner core, and its design feature is to be provided with at least one group of heat transfer tube between said urceolus and the inner core; Said heat transfer tube is provided with pump, and the inlet of this heat transfer tube is communicated with the liquid outlet of a heat exchanger through pipeline, and the liquid outlet of this heat transfer tube is communicated with the inlet of heat exchanger through pipeline, forms closed circuit.
The utility model utilizes the elevated temperature heat flue gas before the wet desulphurization, said heat exchanger is positioned at desulfurization hot flue gas flue before, through the liquid in the elevated temperature heat flue gas heating heat exchanger; Be preferably water; Can certainly be the good liquid of other thermal conductivity, the water after will being heated by pump then circulates in heat transfer tube, and the interlayer between urceolus and the inner core is heated; Simultaneously with urceolus and the heating of inner core barrel; Heat exchange has fully promoted the temperature of cover in the chimney, has eliminated the primary condition of wet flue gas dewfall, has prevented the corrosion failure of liner.Even there is a spot of flue gas to get into the interlayer between urceolus and the inner core, because the interlayer temperature is also enough high, a spot of wet flue gas is gasified, and does not constitute the corrosion failure to urceolus and inner core; And the low-temperature flue gas behind the liquid in the heating heat exchanger enters in the chimney internal cylinder through behind the desulfurizer.
When adopting water to do circulating fluid, preferably adopt boiled water, in order to avoid fouling in the heat transfer tube influences heat-conducting effect.
In the utility model, said heat transfer tube is provided with stop valve, said stop valve be used to carry out hot liquid unlatching, close and chimney about the functions such as heat supply switching of hot flue gas flue.
Concrete structure is: through behind the heat exchanger, the liquid in the heating heat exchanger, said heat exchanger are connected with the inlet and the liquid outlet of said heat transfer tube respectively the hot flue gas before the said desulfurization by flue.Through pump the liquid in the heat transfer tube is circulated, the heat of the elevated temperature heat flue gas before the desulfurization is transferred between urceolus and the inner core, heating chimney wall, thus prevent the wet flue gas dewfall in the chimney.
Said heat transfer tube inlet and liquid outlet all are arranged near the floss hole of urceolus, can be floss hole inlet top near said, and apart from floss hole upper limb 0.8m～1.5m place.
Said inner core is preferably inner steel lining, further, is provided with the insulation layer between said inner steel lining and the urceolus, and said heat transfer tube is arranged in the gap between this insulation layer and the inner steel lining.
Said inner core also can be the brick setting corrosion-proof lining, is provided with the gap between said urceolus and the inner core, and said heat transfer tube is arranged in this gap, and said outer tube inner wall surface is provided with the insulation layer.
As a kind of preferred version; According to the chimney operating condition, said heat transfer tube is preferably 1-10 group, more preferably two groups, three groups or four groups; In order to strengthen the heat-transfer effect of hot flue gas to barrel, said heat transfer tube is provided with radiation cooling plate/sheet and the coating of strengthening heat exchange.
In order to improve the heats of heat transfer tube road to barrel, said heat transfer tube extends to the chimney top from the floss hole upper limb, returns then to constitute complete circuit system, forms inner core high efficiency heating on a large scale.
Contain the adherent flow-disturbing effect of acid fume gas in order to strengthen in the inner core, the inwall of said inner core is provided with interior thorax helix.
By said structure; The principle of the utility model is the high-temperature flue gas thermal source that utilizes desulfurization preceding, by driving and control device, transfers in the gap between the chimney inner/outer tube through liquid through the energy of heat exchanger with the high-temperature flue gas thermal source; Increase substantially clearance space and lining temperature; Prevented the dewfall generation, fundamentally removed the key factor that causes the chimney lining corrosion, thereby do not corroded.
Even taking place under the situation that wet flue gas gets into the gap between the chimney inner/outer tube, because clearance space has been heated to suitable temperature, the wet flue gas that gets into wherein can dewfall, can the infiltrate urceolus does not form water stainly yet, causes the overcoat corrosion failure.The clearance air interlayer of heating has constituted urceolus not by effective protection of infiltration and corrosion.
Compared with prior art, the beneficial effect of the utility model is: the thermal source of this device is taken from the high-temperature flue gas after the boiler combustion, does not add new equipment, and device constitutes simple, and overall cost is low.The low speed that hot liquid in the pipeline is just kept in power consumption flows, and operating cost is very low.
What this device adopted is thoroughly to remove the basic factor that causes the chimney corrosion, the Active Anticorrosion technical thought of disconnected its root.With the passive aseptic technic of present employing, like corrosion-inhibiting coating, paste vitreous brick product, use titanium steel plate, frp linings etc. are compared, have cost low, effective, construct and keep in repair technology and economic advantages significantly such as easy, easy to implement.This technology both can be used for traditional newly-built chimney and chimney transformation, and can be used for does not have in the supporting enforcement of rotten dust-collecting energy-saving chimney yet.
Liquid in the high-temperature flue gas heating heat exchanger of the utility model before with desulfurization is passed to heat between the chimney inner/outer tube in the interlayer, and this pipeline is from the through chimney top of chimney bottom, returns then to constitute complete circuit system.Get into the preceding pipeline laying heat-insulation layer insulation of chimney, the pipeline in the gap is provided with radiation cooling plate/sheet and coating.
Below in conjunction with accompanying drawing and embodiment the utility model is done further to set forth.
Description of drawings
Fig. 1 is the structure principle chart of a kind of embodiment of the utility model;
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is the structure principle chart of the another kind of embodiment of the utility model;
Fig. 4 is the B-B profile of Fig. 3;
Fig. 5 is the utility model utilizes high-temp liquid heating barrel through the heat transfer tube road a schematic diagram.
In the drawings
The 1-urceolus; The 2-inner steel lining; 3-insulation layer; The 4-heat transfer tube;
The 5-corrosion-proof lining; Thorax helix in the 6-; The 8-stop valve; The 10-inner core;
Hot flue gas flue before the 9-desulfurization; The 11-desulfurizer; 12-radiation cooling plate/sheet;
13-hot liquid pipeline goes out (going into) total mouthful; The 14-heat exchanger; The 15-pump; F-hot liquid flow direction.
The specific embodiment
Embodiment 1
A kind of anticorrosion chimney that is provided with the barrel heater, chimney height 240m, as illustrated in fig. 1 and 2, it comprises urceolus 1 and inner core 10; Wherein urceolus 1 is a reinforced concrete structure, and said inner core 10 is inner steel lining 2 and insulation layer 3.As shown in Figure 5, be provided with three groups of heat transfer tubes between said urceolus 1 and the inner core 10, every group of heat transfer tube 4 inlets are communicated with a heat exchanger 14 liquid outlets through pipeline, and these heat transfer tube 4 liquid outlets are communicated with heat exchanger 14 inlets through pipeline, form closed circuit; Said heat transfer tube 4 is provided with pump 15.Said heat exchanger 14 is positioned at the hot flue gas flue 9 before the desulfurization; Elevated temperature heat flue gas before the desulfurization is heated into high-temperature water with the water in the heat exchanger 14, through pump 15 high-temperature water is circulated in heat transfer tube, constitutes heat transfer tube; Gap between heating urceolus 1 and the inner core 10
Be provided with insulation layer 3 between said inner steel lining 2 and the urceolus 1.Said heat transfer tube 4 is arranged in the gap between this insulation layer 3 and the inner steel lining, and its two hot liquid pipelines go out (going into) and are separately positioned on left and right flue entrance upper limb 1m height and position for total mouthful 13.Said heat transfer tube 4 extends to the chimney top from chimney flue entrance upper limb, and said heat transfer tube 4 is provided with tandem heat sink/sheet 12 and coating.Open or close corresponding stop valve 8, hot flue gas flue heat supply is switched about execution.
The preceding elevated temperature heat flue gas of desulfurization that the utility model utilizes boiler to produce; Through pump 15 water is circulated in heat transfer tube; Get into the gap between urceolus and the inner core through pipeline through inlet; With the heating of the air blanketing between urceolus and the inner core and inner steel lining, thereby the wet flue gas in the chimney can not adherent dewfall, has guaranteed that inner steel lining is not corroded.Even a spot of flue gas gets into the gap between urceolus and the inner core, because interlayer is heated, the yet impossible dewfall of the flue gas of entering can not cause corrosion to urceolus and inner core, realizes the whole anticorrosion of chimney.
When certain flue need overhaul,, thereby guarantee the heat transfer tube operate as normal through the switch of control stop valve.
In this embodiment, the flue after the desulfurization can be an arcuate structure, and the flue gas that gets into chimney is rotated.Inner steel lining can be provided with the helix structure identical with the flue gas direction of rotation.Flue gas forms rotation after getting into chimney internal cylinder, has the aerodynamics characteristics of concentrated vorticity, and chimney can obtain better energy-conservation and environment protecting.
A kind of rotten dust-collecting energy-saving chimney of nothing that is provided with the barrel heater, chimney height is 120m, and urceolus is a reinforced concrete structure, and stack structure is similar with embodiment 1, and its difference is: liner is the corrosion-proof lining 5 of brick setting, shown in Fig. 3 and 4; Gap between said urceolus 1 and the inner core is the air heat-insulation layer of width 100mm, and thermal chimney road heating system is set in this air heat-insulation layer.The flue entrance upper limb is provided with the hot liquid pipeline respectively and goes out (going into) total mouthful 13 in the chimney left and right sides, and the connection of pipeline, layout and switching mode are identical with embodiment 1.
In this embodiment, the flue after the desulfurization is an arcuate structure, and the flue gas that gets into chimney rotates, the structure helix structure identical with the flue gas direction of rotation on the brick liner.The formation rotation was flowed after flue gas got into chimney internal cylinder, had the aerodynamics characteristics of concentrated vorticity, and chimney can obtain better energy-conservation and environment protecting.
A kind of anticorrosion brick liner chimney that is provided with the barrel heater; The layout on the stack structure of present embodiment and heat transfer tube road is identical with embodiment 2; Difference is that the flue after the desulfurization is the relative mode of entrance of traditional chimney, and chimney internal cylinder 10 does not have helix structure.
The content that the foregoing description is illustrated is to be understood that to these embodiment and only is used to be illustrated more clearly in the utility model; And be not used in the restriction the utility model scope; After having read the utility model, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the utility model.
Claims (10)
1. an anticorrosion chimney that is provided with the barrel heater comprises urceolus (1) and inner core (10), it is characterized in that, is provided with at least one group of heat transfer tube (4) between said urceolus (1) and the inner core (10); Said heat transfer tube (4) is provided with pump (15), and the inlet of this heat transfer tube (4) is communicated with the liquid outlet of a heat exchanger (14) through pipeline, and the liquid outlet of this heat transfer tube (4) is communicated with the inlet of heat exchanger (14) through pipeline, forms closed circuit.
2. the anticorrosion chimney that is provided with the barrel heater according to claim 1 is characterized in that, said heat exchanger (14) is positioned at the hot flue gas flue (9) before the desulfurization.
3. the anticorrosion chimney that is provided with the barrel heater according to claim 1 is characterized in that, said inner core (10) is inner steel lining (2).
4. the anticorrosion chimney that is provided with the barrel heater according to claim 1 is characterized in that, said inner core (10) is brick setting corrosion-proof lining (5).
5. the anticorrosion chimney that is provided with the barrel heater according to claim 3; It is characterized in that; Be provided with insulation layer (3) between said inner steel lining (2) and the urceolus (1), said heat transfer tube (4) is arranged in the gap between this insulation layer (3) and the inner steel lining (2).
6. the anticorrosion chimney that is provided with the barrel heater according to claim 1 is characterized in that, said heat transfer tube (4) is the 1-10 group.
7. according to the described anticorrosion chimney that is provided with the barrel heater of one of claim 1～6, it is characterized in that said heat transfer tube (4) is provided with stop valve (8).
8. according to the described anticorrosion chimney that is provided with the barrel heater of one of claim 1～6, it is characterized in that said heat transfer tube (4) extends to the chimney top from chimney bottom.
9. according to the described anticorrosion chimney that is provided with the barrel heater of one of claim 1～6, it is characterized in that the inwall of said inner core (10) is provided with interior thorax helix (6).
10. according to the described anticorrosion chimney that is provided with the barrel heater of one of claim 1～6, it is characterized in that said heat transfer tube (4) is provided with radiation cooling plate/sheet (12) and the coating of strengthening heat exchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200179164U CN202432534U (en) | 2012-01-16 | 2012-01-16 | Anti-corrosion chimney with barrel wall heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200179164U CN202432534U (en) | 2012-01-16 | 2012-01-16 | Anti-corrosion chimney with barrel wall heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202432534U true CN202432534U (en) | 2012-09-12 |
Family
ID=46781975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200179164U Expired - Lifetime CN202432534U (en) | 2012-01-16 | 2012-01-16 | Anti-corrosion chimney with barrel wall heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202432534U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418933A (en) * | 2012-01-16 | 2012-04-18 | 常熹钰 | Corrosion-resistant chimney with cylinder wall heating device |
| CN104748136A (en) * | 2013-12-31 | 2015-07-01 | 常熟市第二热电有限公司 | Energy-saving chimney of thermal power plant |
| CN113108613A (en) * | 2021-04-23 | 2021-07-13 | 武汉钢铁有限公司 | Flue gas waste heat recovery method and system |
-
2012
- 2012-01-16 CN CN2012200179164U patent/CN202432534U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418933A (en) * | 2012-01-16 | 2012-04-18 | 常熹钰 | Corrosion-resistant chimney with cylinder wall heating device |
| CN102418933B (en) * | 2012-01-16 | 2014-01-08 | 常熹钰 | Corrosion-resistant chimney with cylinder wall heating device |
| CN104748136A (en) * | 2013-12-31 | 2015-07-01 | 常熟市第二热电有限公司 | Energy-saving chimney of thermal power plant |
| CN113108613A (en) * | 2021-04-23 | 2021-07-13 | 武汉钢铁有限公司 | Flue gas waste heat recovery method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120912 Effective date of abandoning: 20140108 |
|
| RGAV | Abandon patent right to avoid regrant |