CN207196530U - A kind of device for being used to eliminate boiler chimney white plume - Google Patents
A kind of device for being used to eliminate boiler chimney white plume Download PDFInfo
- Publication number
- CN207196530U CN207196530U CN201721086209.XU CN201721086209U CN207196530U CN 207196530 U CN207196530 U CN 207196530U CN 201721086209 U CN201721086209 U CN 201721086209U CN 207196530 U CN207196530 U CN 207196530U
- Authority
- CN
- China
- Prior art keywords
- chimney
- boiler
- hot air
- flue gas
- plume
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000002002 slurry Substances 0.000 claims abstract description 32
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 230000023556 desulfurization Effects 0.000 claims abstract description 21
- 239000007921 spray Substances 0.000 claims abstract description 8
- 239000000779 smoke Substances 0.000 claims description 28
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 8
- 239000012718 dry electrostatic precipitator Substances 0.000 claims 2
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000003009 desulfurizing effect Effects 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 44
- 239000003546 flue gas Substances 0.000 description 35
- 239000007788 liquid Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012717 electrostatic precipitator Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Chimneys And Flues (AREA)
Abstract
A kind of device for being used to eliminate boiler chimney white plume, it comprises at least boiler body and the air preheater, dry electrostatic cleaner, air-introduced machine, desulfuration absorbing tower, the chimney that are linked in sequence by flue and the boiler body, the desulfurizing tower is provided with least one layer of desulfurization slurry spray equipment, the spray equipment is connected with least one slurry circulating pump by pipeline, at least has slurries cooling device in the outlet of slurry circulating pump or inlet in series；The air preheater is provided with hot blast outlet, and the hot blast outlet is connected by hot air duct with the flue before the chimney.The device provided by the utility model for being used to eliminate boiler chimney white plume, small volume low with energy consumption, flue non-resistance, the simple advantage of engineering.
Description
Technical Field
The utility model relates to an environmental protection equipment technical field, in particular to a device for eliminating white plume of boiler chimney.
Background
When the flue gas of the coal-fired boiler is treated by adopting a wet desulphurization process, under the normal condition, the superheated flue gas becomes saturated flue gas due to the increase of humidity after being sprayed by desulphurization slurry in a desulphurization absorption tower, then flows through a chimney and enters external atmosphere, and because the flue gas is in a saturated state in the chimney and has a temperature higher than the external environment temperature of the chimney, the flue gas is rapidly cooled by the atmosphere with lower temperature after being discharged from the chimney to the atmosphere, the gaseous water in the flue gas is condensed into liquid water, the transmittance of the flue gas is reduced, and the phenomenon that the chimney emits white smoke, namely the phenomenon of white smoke plume is shown; with the further diffusion and mixing of the smoke in the atmosphere, the concentration of liquid water in the mixed gas of the atmosphere and the smoke is reduced, the sunlight transmittance is improved, the partial pressure of water vapor in the mixed gas is reduced, the saturation temperature is reduced, the mixed gas is evaporated again, and the white smoke is gradually reduced until disappears. In order to meet the requirement of environmental protection, measures are required to eliminate the white smoke plume phenomenon of the chimney. At present, the conventional method for eliminating white smoke plume of a boiler chimney is to arrange a smoke heater in a flue in front of the chimney to heat smoke entering the chimney, improve the superheat degree of the smoke, and generally heat the smoke to over 75 ℃. The problems with this technique are: a large amount of heat energy needs to be consumed; the resistance in the flue is increased; only visual emission reduction is carried out, and actually, emission reduction is not carried out, and emission is increased due to the fact that energy consumption is increased by heating flue gas; the heater has large volume, difficult space arrangement and large investment.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the present invention is to provide a device for eliminating white smoke plume of boiler chimney to reduce or avoid the aforementioned problems.
In order to solve the technical problem, the utility model provides a device for eliminating white smoke plume of boiler chimney, it includes boiler body and through flue and the air heater, dry-type electrostatic precipitator, draught fan, desulfurization absorption tower, chimney that the boiler body connects gradually at least, be provided with at least one deck desulfurization thick liquid spray set in the desulfurizing tower, spray set has at least one thick liquid circulating pump through the pipe connection, at least in one thick liquid circulating pump export or the entry establish ties there is thick liquid cooling device; the air preheater is provided with a hot air outlet, and the hot air outlet is connected with a flue in front of the chimney through a hot air pipeline.
Preferably, the hot air outlet is arranged on the shell of the hot air side of the air preheater or on a hot air outlet duct.
Preferably, the number of the spraying devices is two or more, and the slurry cooling device is connected in series with the inlet or the outlet of the slurry circulating pump corresponding to the last spraying device in the flue gas flow direction.
Preferably, the slurry cooling device is connected with a heat pump.
Preferably, the slurry cooling device is connected with a boiler fan heater.
Preferably, a dust remover is connected in series on the hot air pipeline.
The utility model provides a device for eliminating white plume of boiler chimney has the energy consumption and hangs down, and is small, and the flue does not have the resistance, the simple advantage of engineering.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
fig. 1 is a schematic structural diagram of an apparatus for removing white plume from a boiler stack according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an apparatus for eliminating white smoke plume of a boiler stack according to an embodiment modified from FIG. 1;
FIG. 3 is a schematic structural diagram of an apparatus for eliminating white smoke plume of a boiler stack according to an improved embodiment based on FIG. 2.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
Fig. 1 is a schematic structural diagram of an apparatus for eliminating white plume from a boiler stack according to an embodiment of the present invention. Referring to fig. 1, the utility model provides a device for eliminating white smoke plume of boiler chimney, it includes boiler body 1 at least and through flue with air heater 2, dry-type electrostatic precipitator 3, draught fan 4, desulfurization absorption tower 5, chimney 6 that boiler body 1 connects gradually, desulfurizing tower 5 is provided with at least one deck desulfurization thick liquid spray set 51, spray set 51 is connected with at least one thick liquid circulating pump 7 through the pipeline, at least in the export or the entry of a thick liquid circulating pump 7 series connection have thick liquid cooling device 8; the air preheater 2 is provided with a hot air outlet 9, and the hot air outlet 9 is connected with a flue 11 in front of the chimney 6 through a hot air pipeline 12.
The hot air outlet 9 may be disposed on the hot air side of the air preheater 2 or on the hot air outlet duct.
The slurry cooling device 8 may be a commercially available heat exchanger using an existing heat exchanger structure such as a shell-and-tube heat exchanger or a plate heat exchanger.
The utility model provides a device for eliminating white plume of boiler chimney, its theory of operation is: firstly, the slurry cooling device 8 connected in series at the outlet or inlet of the slurry circulating pump 7 cools the desulfurization slurry circulating in the desulfurization absorption tower 5, and the cooled desulfurization slurry is sprayed and mixed with the flue gas flowing through the desulfurization tower 5 for heat exchange, so that the flue gas flowing through the desulfurization absorption tower 5 can be cooled by the desulfurization slurry, and compared with a conventional system (i.e. a system which does not cool the desulfurization slurry), the temperature and the moisture content of the flue gas entering the chimney 6 can be reduced, the absolute moisture content in the flue gas is reduced, the formation of condensed water can be slowed down and reduced, and white smoke plume at the outlet of the chimney 6 is reduced.
And then, the hot air led out of the air preheater 2 is sent into the flue 11 in front of the chimney 6 through the hot air pipeline 12 and is mixed with the flue gas in the flue 11 for heat exchange. And the hot air of the air preheater 2 is adopted to heat the flue gas in front of the chimney 6, so that the superheat degree of the flue gas is improved. Namely, the saturated flue gas entering the chimney 6 is heated, so that the saturated flue gas is converted into superheated flue gas, the superheat degree of the flue gas is improved, namely the relative humidity of the flue gas is reduced, so that the time of occurrence of condensation water after the flue gas emerges from the chimney can be prolonged, and when the superheat degree of the flue gas is higher, before gaseous water in the flue gas is not converted into liquid water due to atmospheric cooling, the partial pressure of water vapor in the flue gas is reduced and the saturation temperature is reduced along with further diffusion and mixing of the flue gas in the atmosphere, so that the gaseous water in the flue gas is prevented from being converted into liquid water, and the occurrence of white smoke plume of the chimney can be avoided. The hot air may be primary air or secondary air in a conventional boiler system. Since the saturated flue gas entering the chimney 6 is cooled, cooled and dehumidified by cooling the desulfurization slurry, and the white smoke plume of the chimney is greatly reduced, the reheating amplitude of the saturated flue gas entering the chimney 6 can be greatly reduced compared with a conventional system (i.e., a system in which the desulfurization slurry is not cooled, i.e., a conventional method for eliminating the white smoke plume of the boiler chimney mentioned in the background art).
The utility model discloses a to getting into the desulfurization thick liquid after the chimney 6's saturated flue gas is earlier through the cooling reduces the temperature and dehumidifies the processing that adopts hot-blast heating to improve flue gas superheat degree again, can subduct by a wide margin in order to eliminate the white plume of boiler chimney. Through tests, the cooling temperature of the saturated flue gas entering the chimney 6 (namely, the flue gas discharged from the desulfurization absorption tower 5) by the slurry cooling device 8 is reduced by 3-10 ℃ compared with that of a conventional system (namely, a system which does not cool the desulfurization slurry). And introducing air heated by the air preheater 2 from the hot air outlet 9 to heat the saturated flue gas subjected to temperature reduction and dehumidification by 5-15 ℃ so as to convert the saturated flue gas into superheated flue gas, and keeping a certain degree of superheat, so that the effect of simply heating the flue gas entering the chimney by a conventional system (i.e. a system not cooling the desulfurization slurry) at 25-30 ℃ can be achieved, and further white smoke plume of the chimney is eliminated. That is, if the existing method of directly heating the flue gas is simply adopted, the flue gas needs to be heated to 25-30 ℃ to enable the temperature of the flue gas to reach over 75 ℃.
Furthermore, because the utility model discloses in to the heating of flue gas by following via that the mouth 9 introduces is drawn forth to hot-blast air after the air heater 2 heating realizes, consequently, need not additionally be in set up any subassembly in the flue before chimney 6, and the air after these heats can together discharge into the atmosphere with the flue gas, consequently, the utility model discloses reduced the energy consumption by a wide margin, do not have any change and resistance increase in the flue simultaneously. The engineering is simple, and the adjustment is convenient.
The spraying device 51 may be one or more layers, the slurry circulating pump 7 connected to the spraying device 51 may be one or more, and similarly, the slurry cooling device 8 connected in series to the inlet or outlet of the slurry circulating pump 7 may be one or more.
FIG. 2 is a schematic structural diagram of an apparatus for eliminating white smoke plume of a boiler stack according to an improved embodiment based on FIG. 1. In a preferred embodiment, as shown in fig. 2, the spraying devices 51 have two or more layers, and the slurry cooling device 8 is connected in series with the inlet or outlet of the slurry circulating pump 7 corresponding to the spraying device 51 on the last layer in the flue gas flow direction. This can better reduce dust emissions.
In a preferred embodiment, the slurry cooling device 8 is connected to a heat pump (not shown) so that heat can be recovered from the desulfurization tower 5 and used for heating.
The slurry cooling device 8 may also be connected to a boiler air heater (not shown in the figure), and the absorbed heat may heat the boiler air supply.
FIG. 3 is a schematic structural diagram of an apparatus for eliminating white smoke plume of a boiler stack according to an improved embodiment based on FIG. 2. Referring to fig. 3, a dust collector 13 is connected in series to the hot air duct 12, so that dust in hot air can be reduced, and pollution of the hot air to flue gas entering the chimney 6 can be reduced. The dust collector 13 may be a commercially available electrostatic plate type dust collector, or may be another commercially available dry dust collector.
The utility model provides a device for eliminating white plume of boiler chimney has the energy consumption and hangs down, and is small, and the flue does not have the resistance, the simple advantage of engineering.
It is to be understood by those skilled in the art that while the present invention has been described in terms of several embodiments, it is not intended that each embodiment cover a separate embodiment. The description is given for clearness of understanding only, and it is to be understood that all matters in the embodiments are to be interpreted as including all technical equivalents which are encompassed by the claims.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (6)
1. A device for eliminating white smoke plume of a boiler chimney is characterized by at least comprising a boiler body, an air preheater, a dry electrostatic precipitator, an induced draft fan, a desulfurization absorption tower and a chimney, wherein the air preheater, the dry electrostatic precipitator, the induced draft fan, the desulfurization absorption tower and the chimney are sequentially connected with the boiler body through a flue; the air preheater is provided with a hot air outlet, and the hot air outlet is connected with a flue in front of the chimney through a hot air pipeline.
2. The device for eliminating white smoke plume of boiler chimney according to claim 1, wherein said hot air outlet is disposed on the hot air side of the housing of said air preheater or on the hot air outlet duct.
3. The device for eliminating white smoke plume of boiler chimney according to claim 1, wherein said spray devices are two or more layers, and said slurry cooling device is connected in series to the inlet or outlet of said slurry circulating pump corresponding to the last layer of said spray devices in the smoke flow direction.
4. The apparatus for eliminating white plume of boiler stack of claim 1, wherein the slurry cooling apparatus is connected to a heat pump.
5. The apparatus for eliminating white plume of boiler stack of claim 1, wherein the slurry cooling apparatus is connected to a boiler fan heater.
6. The apparatus according to claim 1, wherein a dust collector is connected in series to the hot air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721086209.XU CN207196530U (en) | 2017-08-28 | 2017-08-28 | A kind of device for being used to eliminate boiler chimney white plume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721086209.XU CN207196530U (en) | 2017-08-28 | 2017-08-28 | A kind of device for being used to eliminate boiler chimney white plume |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207196530U true CN207196530U (en) | 2018-04-06 |
Family
ID=61795401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721086209.XU Ceased CN207196530U (en) | 2017-08-28 | 2017-08-28 | A kind of device for being used to eliminate boiler chimney white plume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207196530U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731012A (en) * | 2018-05-30 | 2018-11-02 | 河北华强科技开发有限公司 | A kind of device and method eliminated for the wet plume in coal-burning power plant |
| CN109772106A (en) * | 2019-01-21 | 2019-05-21 | 浙江菲达环保科技股份有限公司 | A kind of flue gas takes off white water saving fixtures |
| CN110639348A (en) * | 2018-06-26 | 2020-01-03 | 北京万信同和能源科技有限公司 | Colored smoke plume processing equipment and method |
-
2017
- 2017-08-28 CN CN201721086209.XU patent/CN207196530U/en not_active Ceased
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731012A (en) * | 2018-05-30 | 2018-11-02 | 河北华强科技开发有限公司 | A kind of device and method eliminated for the wet plume in coal-burning power plant |
| CN108731012B (en) * | 2018-05-30 | 2020-07-24 | 河北华强科技开发有限公司 | Device and method for eliminating wet smoke plume of coal-fired power plant |
| CN110639348A (en) * | 2018-06-26 | 2020-01-03 | 北京万信同和能源科技有限公司 | Colored smoke plume processing equipment and method |
| CN110639348B (en) * | 2018-06-26 | 2024-11-08 | 北京万信同和能源科技有限公司 | Colored smoke plume processing equipment and method |
| CN109772106A (en) * | 2019-01-21 | 2019-05-21 | 浙江菲达环保科技股份有限公司 | A kind of flue gas takes off white water saving fixtures |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20190201 Decision number of declaring invalidation: 38877 Granted publication date: 20180406 |