CN215610450U - Boiler flue gas white eliminating device capable of utilizing heat source - Google Patents
Boiler flue gas white eliminating device capable of utilizing heat source Download PDFInfo
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- CN215610450U CN215610450U CN202121079457.8U CN202121079457U CN215610450U CN 215610450 U CN215610450 U CN 215610450U CN 202121079457 U CN202121079457 U CN 202121079457U CN 215610450 U CN215610450 U CN 215610450U
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Abstract
The utility model discloses a boiler flue gas white elimination device capable of utilizing a heat source, which comprises a boiler body and a boiler flue gas chimney, wherein a desulfurization tower is connected between the boiler body and the chimney through a flue, a white elimination condenser is connected with a rear end flue of the desulfurization tower, the flue is connected with a high-temperature section of the boiler body and is provided with a first heat exchanger, the first heat exchanger is externally connected with a second heat exchanger and a third heat exchanger to form a circulation passage, the second heat exchanger is arranged on the outer side of a preheating section, a re-heating section is arranged at the rear end flue of the white elimination condenser, and the third heat exchanger is arranged on the outer side of the re-heating section. This boiler flue gas white device that disappears that can utilize the heat source can utilize the flue gas waste heat to adjust the reheat processing of flue gas or the preheating processing of boiler water in a flexible way according to boiler temperature and external environment temperature, and equipment uses more in a flexible way, fully improves heat utilization rate, has good water conservation effect simultaneously.
Description
Technical Field
The utility model relates to the technical field related to flue gas treatment, in particular to a boiler flue gas whitening device capable of utilizing a heat source.
Background
For reducing air pollution, the exhaust flue gas of current boiler all needs to carry out purification treatment back discharge through equipment such as desulfurizing tower usually, and current desulfurizing tower working method is the wet process mode such as spray usually for can having a large amount of vapor in the exhaust flue gas, discharging and condensing in the atmosphere and producing the white fog, cause the white cigarette phenomenon of dense in the vision, not only cause and produce the pollution in the vision, also can cause a large amount of water waste.
The existing smoke whitening treatment mode is mainly to treat through a smoke condensing technology and a smoke reheating technology, for example, the Chinese patent publication No. CN209386338U discloses a high-temperature dust-removal-based power generation boiler tail flue gas white elimination device, which is mainly characterized in that when a desulfurizing tower is arranged to carry out desulfurization treatment on flue gas, the water vapor in the flue gas can be condensed by matching the white elimination condenser with the white elimination reheater, wherein, the spray water, the condensed water and the water for condensing heat exchange all need to use a large amount of water resources, meanwhile, the high-temperature flue gas is cooled by the white elimination condenser and heated by the white elimination reheater, a large amount of heat energy waste is caused in the process, the heating of the white elimination reheater is mainly adjusted to adapt to the external environment temperature, when the temperature of the flue gas and the temperature of the external environment change, flexible adjustment and temperature rise are not convenient, and the energy consumption is easily increased.
Aiming at the problems, the novel design is carried out on the basis of the original boiler flue gas white elimination device.
Disclosure of Invention
The utility model aims to provide a boiler flue gas white elimination device capable of utilizing a heat source, and aims to solve the problems of serious heat energy waste, large water resource consumption and low recovery and cyclic utilization rate in the treatment process of the boiler flue gas white elimination device in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: a boiler flue gas white elimination device capable of utilizing a heat source comprises a boiler body and a boiler flue gas chimney, wherein a desulfurizing tower is connected between the boiler body and the chimney through a flue, and a white elimination condenser is connected to a rear-end flue of the desulfurizing tower;
the high-temperature section of the flue connected with the boiler body is provided with a first heat exchanger, and a second heat exchanger and a third heat exchanger are simultaneously connected outside the first heat exchanger to form a circulation passage;
wherein the outer side of the boiler body is connected with a water inlet pipe, the connecting section of the water inlet pipe and the boiler body comprises a preheating section, and the second heat exchanger is arranged on the outer side of the preheating section;
meanwhile, a reheating section is arranged at the rear end flue of the white-removing condenser, and the third heat exchanger is arranged outside the reheating section.
Preferably, a circulating pump and a three-way valve are connected to a circulating water pipe end of the first heat exchanger, and 3 ports of the three-way valve are respectively connected to the first heat exchanger, the second heat exchanger and the third heat exchanger.
By adopting the technical scheme, the heat exchange circulating water of the first heat exchanger can be switched between the second heat exchanger and the third heat exchanger for circulation, the flue gas waste heat can be recycled conveniently, the reheating discharge of flue gas or the preheating treatment of boiler water can be flexibly adjusted according to the boiler temperature and the external temperature, the energy consumption is reduced, and the working flexibility of equipment is improved.
Preferably, the flue is also provided with a smoke exhaust fan, and the smoke exhaust fan is matched with the temperature rise of the temperature rise section to keep the stable circulation and discharge of the relatively high-density carbon dioxide mixed gas in the flue gas.
Adopt above-mentioned technical scheme, have a large amount of carbon dioxide in the flue gas, density is big than the air, reheats through retrieving the heat and reduces density, and the cooperation smoke exhaust fan provides emission power, helps handling the stable circulation of flue gas and discharges.
Preferably, the bottom of the desulfurizing tower is provided with a water collecting tank, the water collecting tank is positioned under the spraying port of the desulfurizing tower, and the water collecting tank and the spraying water supply end of the desulfurizing tower are communicated and matched for supplying water.
By adopting the technical scheme, the spraying treatment water in the desulfurizing tower can be recovered through the water collecting tank, and the utilization rate of water resources is effectively improved.
Preferably, the water collecting tank is further connected with a water return pipe, and the upper end of the water return pipe is connected to a smoke condensed water discharge end of the white-eliminating condenser to keep the condensed water recovered and discharged.
By adopting the technical scheme, the water condensed in the flue gas can be used for supplementing water for a spray system of the desulfurizing tower, so that waste water resources are avoided being directly discharged.
Preferably, the inner side of the white-removing condenser is uniformly distributed with water-cooling heat exchange tubes for keeping heat exchange condensation of flue gas, the rear ends of the water-cooling heat exchange tubes are directly communicated with the spray pipes, and the spray pipes are positioned above the desulfurizing tower for keeping flue gas spraying treatment.
Adopt above-mentioned technical scheme, the water resource cooperation through desulfurizing tower and white condenser that disappears is used, cooperates the water catch bowl again and carries out the water resource retrieval and utilization, when avoiding the water waste, keeps good cooling treatment effect.
Compared with the prior art, the utility model has the beneficial effects that: the boiler flue gas white elimination device capable of utilizing the heat source,
1. the first heat exchanger, the second heat exchanger and the third heat exchanger are matched for recycling the waste heat of the flue gas, and in the using process of the device, the heat exchange circulating water of the first heat exchanger can be switched and circulated between the second heat exchanger and the third heat exchanger by matching with the switching adjustment of the circulating pump and the three-way valve, so that the waste heat of the flue gas can be recycled, meanwhile, the reheating treatment of the flue gas or the preheating treatment of boiler water can be flexibly adjusted according to the boiler temperature and the external environment temperature, the device is more flexible to use, and the heat energy utilization rate is fully improved;
2. be provided with the water catch bowl and spray when processing water carries out recycle to the desulfurizing tower, the shower of desulfurizing tower and the water-cooling heat exchange tube of the white condenser that disappears set up overall, make things convenient for the retrieval and utilization of water resource to handle, help fully cooling in desulfurizing tower and white condenser department that disappears simultaneously, and the comdenstion water that the flue gas produced through the white condenser dewfall that disappears also can flow to the water catch bowl through the return pipe for desulfurizing tower spraying system's moisturizing further reduces the waste of water resource.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a water collection sump according to the present invention;
FIG. 3 is a schematic view of the overall structure of embodiment 1 of the present invention;
fig. 4 is a schematic view of the overall structure of embodiment 2 of the present invention.
In the figure: 1. a boiler body; 2. a chimney; 3. a flue; 4. a desulfurizing tower; 5. a white elimination condenser; 6. a first heat exchanger; 7. a second heat exchanger; 8. a third heat exchanger; 9. a water inlet pipe; 10. a preheating section; 11. a temperature rising section; 12. a circulation pump; 13. a three-way valve; 14. a smoke exhaust fan; 15. a water collection tank; 16. a water return pipe; 17. water-cooling heat exchange pipes; 18. and (4) a spray pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-3, the present invention provides a technical solution: a boiler flue gas white elimination device capable of utilizing a heat source comprises a boiler body 1 and a boiler smoke exhaust chimney 2, a desulfurizing tower 4 is connected between the boiler body 1 and the chimney 2 through a flue 3, a white elimination condenser 5 is connected with a rear end flue 3 of the desulfurizing tower 4, a water collecting tank 15 is arranged at the bottom of the desulfurizing tower 4, the water collecting tank 15 is positioned under a spray opening of the desulfurizing tower 4, the water collecting tank 15 and a spray water supply end of the desulfurizing tower 4 are communicated and matched for supplying water, water for spray treatment in the desulfurizing tower 4 can be recovered through the water collecting tank 15, the utilization rate of water resources is effectively improved, a water return pipe 16 is also connected at the water collecting tank 15, the upper end of the water return pipe 16 is connected to a flue gas condensate water discharge end of the white elimination condenser 5 to keep recovery and discharge of condensate water, so that water condensed in flue gas can be used for water supplement of a spray system of the desulfurizing tower 4, waste of water resources is avoided being directly eliminated;
the inner side of the white water elimination condenser 5 is uniformly distributed with water-cooling heat exchange tubes 17 for keeping heat exchange and condensation of flue gas, the rear ends of the water-cooling heat exchange tubes 17 are directly communicated with the spray tube 18, the spray tube 18 is positioned above the desulfurizing tower 4 for keeping flue gas spraying treatment, the water resources of the desulfurizing tower 4 and the white water elimination condenser 5 are matched for use, and then the water collection tank 15 is matched for water resource recycling, so that the waste of water resources is avoided, and meanwhile, a good cooling treatment effect is kept;
the flue 3 is connected with a high-temperature section of the boiler body 1 and is provided with a first heat exchanger 6, the outside of the first heat exchanger 6 is simultaneously connected with a second heat exchanger 7 and a third heat exchanger 8 to form a circulation passage, a circulating water pipe end of the first heat exchanger 6 is connected with a circulating pump 12 and a three- way valve 13, and 3 ports of the three-way valve 13 are respectively connected with the first heat exchanger 6, the second heat exchanger 7 and the third heat exchanger 8, so that heat exchange circulating water of the first heat exchanger 6 can be switched and circulated between the second heat exchanger 7 and the third heat exchanger 8, the waste heat of flue gas can be recycled conveniently, when the internal and external temperature needs to be condensed and reheated, the first heat exchanger 6 and the third heat exchanger 8 are communicated through the three-way valve 13, wherein the rear end flue 3 of the white-eliminating condenser 5 is provided with a re-warming section 11, and the third heat exchanger 8 is arranged at the outer side of the re-warming section 11 to keep the stable circulation and discharge of the relatively high-density carbon dioxide mixed gas in the flue gas in cooperation with the re-warming section 11, a large amount of carbon dioxide is contained in the flue gas, the density of the flue gas is higher than that of the air, the flue gas is reheated by recycling heat to reduce the density, and stable circulation and emission of the flue gas are facilitated.
Example 2
Referring to fig. 1-2 and fig. 4, the present invention provides a technical solution: the utility model provides a can carry out white device of boiler flue gas that utilizes to heat source, includes boiler body 1 and boiler chimney 2 of discharging fume, and is connected with desulfurizing tower 4 through flue 3 between boiler body 1 and the chimney 2 to rear end flue 3 of desulfurizing tower 4 is connected with white condenser 5 that disappears, and flue 3 department installs smoke exhaust fan 14 simultaneously, has a large amount of carbon dioxide in the flue gas, and density is big than the air, and cooperation smoke exhaust fan 14 provides emission power, helps handling the stable circulation of flue gas and discharges.
The bottom of the desulfurizing tower 4 is provided with a water collecting tank 15, the water collecting tank 15 is positioned under a spray port of the desulfurizing tower 4, the water collecting tank 15 and a spray water supply end of the desulfurizing tower 4 are communicated and matched for supplying water, spray treatment water in the desulfurizing tower 4 can be recovered through the water collecting tank 15, the utilization rate of water resources is effectively improved, the water collecting tank 15 is also connected with a water return pipe 16, the upper end of the water return pipe 16 is connected with a flue gas condensate water discharge end of the white-eliminating condenser 5 to keep recovery and discharge of condensate water, so that the water condensed in the flue gas can be used for supplementing water for a spraying system of the desulfurizing tower 4, and waste water resources are prevented from being directly discharged;
the inner side of the white water elimination condenser 5 is uniformly distributed with water-cooling heat exchange tubes 17 for keeping heat exchange and condensation of flue gas, the rear ends of the water-cooling heat exchange tubes 17 are directly communicated with the spray tube 18, the spray tube 18 is positioned above the desulfurizing tower 4 for keeping flue gas spraying treatment, the water resources of the desulfurizing tower 4 and the white water elimination condenser 5 are matched for use, and then the water collection tank 15 is matched for water resource recycling, so that the waste of water resources is avoided, and meanwhile, a good cooling treatment effect is kept;
the flue 3 is connected with a high-temperature section of the boiler body 1 and is provided with a first heat exchanger 6, a second heat exchanger 7 and a third heat exchanger 8 are simultaneously connected outside the first heat exchanger 6 to form a circulation passage, a circulating water pipe end of the first heat exchanger 6 is connected with a circulating pump 12 and a three- way valve 13, and 3 ports of the three-way valve 13 are respectively connected with the first heat exchanger 6, the second heat exchanger 7 and the third heat exchanger 8, so that heat exchange circulating water of the first heat exchanger 6 can be switched and circulated between the second heat exchanger 7 and the third heat exchanger 8, the waste heat of flue gas is convenient to recycle, the flue gas is adapted to the condition that the internal temperature and the external temperature are not generating white smoke after being condensed, when reheating is not needed, the first heat exchanger 6 and the second heat exchanger 7 are communicated through the three-way valve 13, wherein the outer side of the boiler body 1 is connected with a water inlet pipe 9, the connecting section of the water inlet pipe 9 and the boiler body 1 comprises a preheating section 10, and the second heat exchanger 7 is arranged on the outer side of the preheating section 10, the preheating treatment of boiler water is convenient, the energy consumption is reduced, and the flexibility of the adjustment of the working temperature control of the equipment is improved.
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 utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a can go on boiler flue gas white device that disappears that utilizes to heat source, includes boiler body (1) and chimney (2) that the boiler discharged smoke, and is connected with desulfurizing tower (4) through flue (3) between boiler body (1) and chimney (2) to rear end flue (3) of desulfurizing tower (4) are connected with white condenser (5), its characterized in that disappears:
the flue (3) is connected with a high-temperature section of the boiler body (1) and is provided with a first heat exchanger (6), and a second heat exchanger (7) and a third heat exchanger (8) are simultaneously connected outside the first heat exchanger (6) to form a circulation passage;
wherein the outer side of the boiler body (1) is connected with a water inlet pipe (9), the connecting section of the water inlet pipe (9) and the boiler body (1) comprises a preheating section (10), and the second heat exchanger (7) is arranged on the outer side of the preheating section (10);
meanwhile, a re-heating section (11) is arranged at the rear end flue (3) of the white-removing condenser (5), and the third heat exchanger (8) is arranged outside the re-heating section (11).
2. The boiler flue gas whitening apparatus capable of utilizing heat sources according to claim 1, characterized in that: the circulating water pipe end of first heat exchanger (6) is connected with circulating pump (12) and three-way valve (13), and 3 ports of three-way valve (13) are connected first heat exchanger (6), second heat exchanger (7) and third heat exchanger (8) respectively.
3. The boiler flue gas whitening apparatus capable of utilizing heat sources according to claim 1, characterized in that: and a smoke exhaust fan (14) is simultaneously installed at the flue (3) and is matched with the temperature rise of the re-warming section (11) to keep the stable circulation and discharge of the relatively high-density carbon dioxide mixed gas in the flue gas.
4. The boiler flue gas whitening apparatus capable of utilizing heat sources according to claim 1, characterized in that: the bottom of desulfurizing tower (4) is provided with water catch bowl (15), and water catch bowl (15) are located desulfurizing tower (4) and spray the mouth under to the water catch bowl (15) and the desulfurizing tower (4) spray the water supply end and keep the intercommunication cooperation to supply water.
5. The boiler flue gas whitening apparatus capable of utilizing heat sources as claimed in claim 4, wherein: the water collecting tank (15) is also connected with a water return pipe (16), and the upper end of the water return pipe (16) is connected with the smoke condensed water discharge end of the white-eliminating condenser (5) to keep the recovery and discharge of condensed water.
6. The boiler flue gas whitening apparatus capable of utilizing heat sources according to claim 1, characterized in that: the inner side of the white-removing condenser (5) is uniformly distributed with water-cooling heat exchange tubes (17) for keeping heat exchange condensation of flue gas, the rear ends of the water-cooling heat exchange tubes (17) are directly communicated with the spray pipe (18), and the spray pipe (18) is positioned above the desulfurizing tower (4) for keeping flue gas spraying treatment.
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| CN202121079457.8U CN215610450U (en) | 2021-05-20 | 2021-05-20 | Boiler flue gas white eliminating device capable of utilizing heat source |
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| CN202121079457.8U CN215610450U (en) | 2021-05-20 | 2021-05-20 | Boiler flue gas white eliminating device capable of utilizing heat source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115069080A (en) * | 2022-07-23 | 2022-09-20 | 常州市永祥化工有限公司 | Processing system with real-time monitoring equipment for desulfurization flue gas treatment |
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2021
- 2021-05-20 CN CN202121079457.8U patent/CN215610450U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115069080A (en) * | 2022-07-23 | 2022-09-20 | 常州市永祥化工有限公司 | Processing system with real-time monitoring equipment for desulfurization flue gas treatment |
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