CN211274153U - Boiler flue gas whitening device - Google Patents
Boiler flue gas whitening device Download PDFInfo
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- CN211274153U CN211274153U CN201922121061.4U CN201922121061U CN211274153U CN 211274153 U CN211274153 U CN 211274153U CN 201922121061 U CN201922121061 U CN 201922121061U CN 211274153 U CN211274153 U CN 211274153U
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- flue gas
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The utility model relates to a boiler flue gas de-whitening device, which comprises a desulfurization wet electric device, a tail chimney and a flue gas de-whitening device arranged between the desulfurization wet electric device and the tail chimney, wherein the upper part of a heat exchanger arranged on the flue gas de-whitening device is connected with the desulfurization wet electric device through a flue gas pipeline, one side of the heat exchanger is connected with a cooling fan, one side of the heat exchanger close to the tail chimney is provided with a cooling air outlet, the cooling air outlet is connected with the tail chimney through a cooling air outlet pipe, a reheater is arranged below the cooling air outlet pipe, one side of the reheater is communicated with the pipeline at the lower part of the heat exchanger through a pipeline and is used for discharging flue gas with low moisture content, one; the utility model discloses a flue gas takes off white device and condenses earlier and reheat, makes the flue gas keep away from the saturated condition, and the flue gas after the moisture content reduces heaies up behind the flue gas reheater and introduces the flue gas after the chimney end and the cooling dehydration and mix mutually, and the white cigarette just can not be seen to the process of discharging fume.
Description
Technical Field
The utility model relates to a flue gas treatment technical field, concretely relates to boiler flue gas takes off white device.
Background
Because the boiler flue gas contains a large amount of water vapor, when the hot flue gas of the boiler is discharged into the atmosphere and meets the cold air of the environment, heat exchange can occur; when the temperature of the flue gas is reduced to the saturation temperature, water vapor in the flue gas begins to condense into tiny water drops, more water vapor can condense into a large amount of tiny water drops along with the further reduction of the temperature of the flue gas, and the naked eyes see that the smoke emits white smoke. In order to eliminate the phenomenon of 'white smoke', reduce the possibility of condensation in a chimney and improve the lifting height of smoke to strengthen the diffusion of the smoke, a smoke whitening device is additionally arranged in front of a tail chimney and behind a desulfurization wet electrostatic device to reduce the humidity of the smoke, SO that the temperature of the smoke is higher than the saturation temperature of the humidity, the visual white smoke is eliminated, and meanwhile, in the process of smoke condensation, harmful substances (SO2, dust and the like) in the smoke are further reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solve the problem among the prior art, its aim at provides a boiler flue gas takes off white device, has realized easy and simple to handle, washs weak point consuming time, energy saving and emission reduction.
A boiler flue gas de-whitening device comprises a desulfurization wet electric device and a tail chimney, a flue gas de-whitening device is arranged between the desulfurization wet electric device and the tail chimney, the upper part of the heat exchanger arranged on the flue gas whiting device is connected with a desulfurization wet electric device through a flue gas pipeline, one side of the heat exchanger is connected with a cooling fan, one side of the heat exchanger close to the tail chimney is provided with a cooling air outlet, the cooling air outlet is connected with a tail chimney through a cooling air outlet pipe, a water outlet for discharging condensed water is arranged on a pipeline at the bottom of the heat exchanger, the water outlet is connected with an external condensed water collecting system, a reheater is arranged below the cooling air outlet pipe, one side of the reheater is communicated with a pipeline at the lower part of the heat exchanger through a pipeline, the reheater is provided with a hot air outlet at one side close to the tail chimney, and the hot air outlet is connected with the tail chimney through a hot air outlet pipe.
Preferably, the heat exchanger adopts a plate type heat exchanger and is constructed by adopting an all-welded technology.
Preferably, the pipeline arranged outside the heat exchanger is in a frustum shape, and the upper part of the pipeline is connected with the flue gas pipeline.
Preferably, the bottom of the pipeline outside the heat exchanger is inclined towards the water outlet, so that the condensed water can rapidly and completely enter the condensed water collecting system.
Preferably, a plurality of spraying devices for humidification are arranged inside the desulfurization wet electric equipment.
Preferably, the bottom of the desulfurization wet electric equipment is provided with a smoke inlet for entering smoke.
Preferably, the tail chimney comprises an external mixed tail gas outer chimney and an internal tail gas inner chimney, the tail gas inner chimney is positioned inside the mixed tail gas outer chimney, and the height and the diameter of the tail gas inner chimney are smaller than those of the mixed tail gas outer chimney.
Preferably, the cooling air outlet pipe is communicated with the mixed tail gas outer chimney, and the hot air outlet pipe is communicated with the tail gas inner chimney.
The utility model discloses a boiler flue gas whiting device, the device condense earlier and reheat, condense the vapor in some flue gas earlier, the saturation temperature of flue gas is reduced in the purpose, heat the flue gas a little again, make the flue gas keep away from the saturated condition, the flue gas after moisture content reduction heats up behind the flue gas reheater and introduces the chimney end and mixes with the flue gas after the cooling dehydration, white cigarette just can not be seen in the smoke exhaust process, simple structure, easy to realize; the designed plate heat exchanger has better heat exchange effect, and the gaps between the plates of the plate heat exchanger are relatively larger, so that the blocking probability is greatly reduced, and the cleaning at the later stage is convenient; the designed condensate water collecting system realizes preheating recycling, waste utilization, energy conservation and emission reduction; and can effectively remove sulfur dioxide, nitrogen oxide, suspended particulate matters and other substances in the smoke.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Description of the reference numerals
1-a desulfurization wet electric device; 2-flue gas pipeline; 3-spraying equipment; 4-a cooling fan; 5-a heat exchanger; 6-cooling the air outlet pipe; 7-a condensate collection system; 8-a reheater; 9-hot air outlet pipe; 10-tail gas inner chimney; 11-mixed tail gas outer chimney.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses an implementation mode, refer to figure 1, a boiler flue gas whitening device, including desulfurization wet electric equipment 1 and afterbody chimney, be equipped with the flue gas whitening device between desulfurization wet electric equipment 1 and the afterbody chimney, the heat exchanger 5 upper portion that the flue gas whitening device was equipped with connects desulfurization wet electric equipment 1 through flue gas pipeline 2, heat exchanger 5 one side is connected with cooling blower 4, heat exchanger 5 is close to afterbody chimney one side and is equipped with the cooling air export, the cooling air export is connected with the afterbody chimney through cooling air play tuber pipe 6, be used for discharging the flue gas after the cooling dehydration, be equipped with the outlet port that is used for discharging the comdenstion water on the pipeline of heat exchanger 5 bottom, the outlet port is connected with outside comdenstion water collecting system 7, cooling air goes out the tuber pipe 6 below and is equipped with reheater 8, one side of reheater 8 is through the pipeline intercommunication, one side of the reheater 8 close to the tail chimney is provided with a hot air outlet which is connected with the tail chimney through a hot air outlet pipe 9.
The tail chimney comprises an external mixed tail gas outer chimney 11 and an internal tail gas inner chimney 10, the tail gas inner chimney 10 is positioned inside the mixed tail gas outer chimney 11, and the height and the diameter of the tail gas inner chimney 10 are smaller than those of the mixed tail gas outer chimney 11; the cooling air outlet pipe 6 is communicated with a mixed tail gas outer chimney 11, the hot air outlet pipe 9 is communicated with a tail gas inner chimney 10, and the cooling air outlet pipe is used for leading the flue gas with the reduced moisture content to the tail end of the chimney through a flue gas reheater and mixing the flue gas with the cooled and dehydrated flue gas.
The heat exchanger adopts a plate heat exchanger and is constructed by adopting an all-welded technology; the pipeline arranged outside the heat exchanger is in a frustum shape, and the upper part of the pipeline is connected with the flue gas pipeline; the bottom of the pipeline outside the heat exchanger is inclined towards the water outlet direction and is used for enabling condensed water to rapidly and completely enter the condensed water collecting system. The inside spray set who is used for the humidification that is equipped with of wet electrical equipment of desulfurization, wet electrical equipment of desulfurization bottom is equipped with the inlet flue that is used for the flue gas to get into.
A cooling and condensing method is adopted on the basis of wet electricity and desulfurization, namely, flue gas is condensed in a heat exchanger through a cooling fan, one part of the flue gas becomes condensed water and enters a condensed water collecting system through a water outlet at the lower part, a part of the condensed flue gas after cooling and dehydration enters a mixed tail gas outer chimney 11 through a cooling air outlet pipe 6, and the other part of the condensed flue gas after moisture content reduction is heated through a reheater 8 and is introduced into a tail gas inner chimney 10. The method comprises the steps of reducing the temperature of the flue gas, simultaneously condensing water vapor in saturated flue gas, condensing a large amount of water, then treating by adopting a physical and chemical precipitation process, adding alkali (sodium hydroxide or calcium hydroxide) into the condensed water for neutralization, synchronously settling, and discharging the condensed water into a desulfurization water tank for recycling. The flue gas with the reduced moisture content passes through a flue gas reheater, is heated and is introduced into the tail end of a chimney to be mixed with the flue gas after being cooled and dehydrated, so that the moisture content and the relative humidity of the mixed flue gas are greatly reduced, the dew point temperature of the exhausted flue gas is reduced, the exhausted flue gas cannot reach the dew point temperature in a short time after being exhausted, the moisture of the tail gas cannot be condensed into water mist, and the aim of reducing white smoke is fulfilled.
By adopting the device of the utility model, the plate heat exchanger is constructed by adopting the all-welded technology, the structure is special, and the heat exchange effect is improved by more 30 percent compared with the traditional plate heat exchanger; difficult jam, convenient washing: the gap between the equipment plates is relatively large, so that the blocking probability is greatly reduced, and the equipment plates are convenient to clean at a later stage; the corrosion resistance is strong: aiming at a special medium, a corrosion-resistant material is adopted, so that the corrosion-resistant material can resist dilute sulfuric acid, HCL gas and the like, and the corrosion problem is effectively solved; the waste heat recycling is realized: the waste heat recycling is realized, the waste heat utilization design is carried out according to different working conditions and different temperatures, and according to calculation, the fuel cost is saved every year after the waste heat utilization, and the investment cost is reduced; the removal rate of other substances in the flue gas is high: after the detected flue gas passes through the de-whitening device, sulfur dioxide, nitrogen oxide and suspended particulate matters are reduced to a certain degree, and the average removal rate is over 50 percent.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A boiler flue gas whitening device comprises a desulfurization wet electric device (1) and a tail chimney, and is characterized in that the desulfurization wet electric device (1) is arranged between the desulfurization wet electric device (1) and the tail chimney, the upper part of a heat exchanger (5) arranged on the flue gas whitening device is connected with the desulfurization wet electric device (1) through a flue gas pipeline (2), one side of the heat exchanger (5) is connected with a cooling fan (4), one side of the heat exchanger (5) close to the tail chimney is provided with a cooling air outlet, the cooling air outlet is connected with the tail chimney through a cooling air outlet pipe (6), a water outlet for discharging condensed water is arranged on a pipeline at the bottom of the heat exchanger (5), the water outlet is connected with an external condensed water collecting system (7), a reheater (8) is arranged below the cooling air outlet pipe (6), one side of the reheater (8) is communicated with a pipeline at the lower part of the heat exchanger, the exhaust device is used for exhausting flue gas with low moisture content, one side of the reheater (8) close to the tail chimney is provided with a hot air outlet, and the hot air outlet is connected with the tail chimney through a hot air outlet pipe (9).
2. The boiler flue gas whitening apparatus according to claim 1, characterized in that the heat exchanger (5) is a plate heat exchanger and is constructed by an all-welded technique.
3. The boiler flue gas whitening apparatus according to claim 1, characterized in that the pipe provided outside the heat exchanger (5) is of a frustum shape, and the upper part of the pipe is connected with the flue gas pipe (2).
4. The boiler flue gas whitening apparatus according to claim 3, characterized in that the bottom of the pipe outside the heat exchanger (5) is inclined towards the drain opening for condensed water to enter the condensed water collection system (7).
5. The boiler flue gas whitening apparatus according to claim 1, characterized in that a plurality of spray devices for humidification are arranged inside the wet electric desulfurization equipment (1).
6. The boiler flue gas whitening apparatus according to claim 5, characterized in that the bottom of the desulfurization wet electric device (1) is provided with a flue gas inlet for flue gas to enter.
7. The boiler flue gas whitening apparatus according to claim 1, characterized in that the tail stack comprises an outer mixed tail gas outer stack (11) and an inner tail gas inner stack (10), the tail gas inner stack (10) is located inside the mixed tail gas outer stack (11), and the height and diameter of the tail gas inner stack (10) are smaller than those of the mixed tail gas outer stack (11).
8. The boiler flue gas whitening device according to claim 7, characterized in that the cooling air outlet pipe (6) is communicated with a mixed tail gas outer chimney (11), and the hot air outlet pipe (9) is communicated with a tail gas inner chimney (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922121061.4U CN211274153U (en) | 2019-12-02 | 2019-12-02 | Boiler flue gas whitening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922121061.4U CN211274153U (en) | 2019-12-02 | 2019-12-02 | Boiler flue gas whitening device |
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| Publication Number | Publication Date |
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| CN211274153U true CN211274153U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922121061.4U Active CN211274153U (en) | 2019-12-02 | 2019-12-02 | Boiler flue gas whitening device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665402A (en) * | 2020-12-08 | 2021-04-16 | 四川省达州钢铁集团有限责任公司 | Desulfurization white smoke treatment system and treatment method thereof |
| CN112827329A (en) * | 2021-02-07 | 2021-05-25 | 丁克敬 | White smoke treatment device |
| CN117771900A (en) * | 2024-02-01 | 2024-03-29 | 绍兴恒辉节能科技有限公司 | Industrial waste gas tail end whitening equipment and waste gas treatment process |
| CN117771900B (en) * | 2024-02-01 | 2024-06-07 | 绍兴恒辉节能科技有限公司 | Industrial waste gas tail end whitening equipment and waste gas treatment process |
-
2019
- 2019-12-02 CN CN201922121061.4U patent/CN211274153U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665402A (en) * | 2020-12-08 | 2021-04-16 | 四川省达州钢铁集团有限责任公司 | Desulfurization white smoke treatment system and treatment method thereof |
| CN112665402B (en) * | 2020-12-08 | 2023-12-26 | 四川省达州钢铁集团有限责任公司 | Desulfurization white smoke treatment system and treatment method thereof |
| CN112827329A (en) * | 2021-02-07 | 2021-05-25 | 丁克敬 | White smoke treatment device |
| CN117771900A (en) * | 2024-02-01 | 2024-03-29 | 绍兴恒辉节能科技有限公司 | Industrial waste gas tail end whitening equipment and waste gas treatment process |
| CN117771900B (en) * | 2024-02-01 | 2024-06-07 | 绍兴恒辉节能科技有限公司 | Industrial waste gas tail end whitening equipment and waste gas treatment process |
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