CN215909080U - Waste heat recovery and white device that disappears of flue gas - Google Patents
Waste heat recovery and white device that disappears of flue gas Download PDFInfo
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- CN215909080U CN215909080U CN202121865550.1U CN202121865550U CN215909080U CN 215909080 U CN215909080 U CN 215909080U CN 202121865550 U CN202121865550 U CN 202121865550U CN 215909080 U CN215909080 U CN 215909080U
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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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Abstract
The utility model discloses a flue gas waste heat recovery and white elimination device, which comprises a gas-gas heat exchanger, a waste heat recovery heat exchanger, a condensation heat exchanger and a demister which are sequentially connected by a flue gas pipeline, wherein the demister is connected with the gas-gas heat exchanger through the flue gas pipeline, low-temperature flue gas from the demister exchanges heat with high-temperature flue gas from a flue gas inlet pipe to realize heat exchange and temperature reduction of the inlet flue gas and heating and drying of the discharged flue gas, the gas-gas heat exchanger is connected with the flue gas inlet pipe and a flue gas calandria, the waste heat recovery heat exchanger comprises a first heat exchange part and a second heat exchange part which are sequentially connected from top to bottom, the first heat exchange part is connected with a refrigerating device and can provide refrigeration for a user end, the second heat exchange part is connected with a heating station and can provide heating for the user end, the application range is wider, and the condensation heat exchanger is connected with a cooling tower, the cooling and the cyclic utilization of the medium are realized, the energy is saved, the economic benefit is good, and the practicability is stronger.
Description
Technical Field
The utility model relates to the technical field of flue gas treatment, in particular to a flue gas waste heat recovery and white elimination device.
Background
In industrial production, when the flue gas of high damp and hot discharges in the air, can produce a large amount of white fogs, be called "white feather" phenomenon, can cause the visual effect when serious, and white feather is one of the important reasons that the haze produced, because the temperature of flue gas is higher, direct emission can cause the waste of a large amount of heat energy, among the current flue gas processing apparatus, adopt the means of spraying to cool down the heat transfer to the flue gas more, need use a large amount of shower water at this in-process, and the cost is higher, and when discharging the flue gas, need reduce the humidity of flue gas through the means of heating, and it is high to consume energy, and economic benefits is poor.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model aims to provide the smoke waste heat recovery and white elimination device which is simple in structure, capable of effectively utilizing heat in smoke, saving energy, effectively eliminating water mist in smoke, good in white elimination effect and low in cost.
In order to achieve the above purposes, the utility model adopts the technical scheme that: the utility model provides a waste heat recovery and white device that disappears of flue gas, includes gas heat exchanger, waste heat recovery heat exchanger, condensation heat exchanger and the defroster that connects gradually by flue gas pipeline, the defroster with gas heat exchanger passes through flue gas pipeline connects, gas heat exchanger connects flue gas inlet pipe and flue gas calandria, waste heat recovery heat exchanger includes by last first heat transfer portion and the second heat transfer portion that connects gradually down, first heat transfer portion is connected with refrigerating plant, second heat transfer portion is connected with the heating plant, condensation heat exchanger is connected with the cooling tower, condensation heat exchanger includes condensate pipe.
Preferably, the first heat exchange portion comprises a first water inlet pipe and a first water outlet pipe, the second heat exchange portion comprises a second water inlet pipe and a second water outlet pipe, the first water inlet pipe and the first water outlet pipe are connected with the refrigerating device, and the second water inlet pipe and the second water outlet pipe are connected with the heat supply station.
Preferably, the condensing heat exchanger comprises a medium inlet pipe and a medium outlet pipe, and the medium inlet pipe and the medium outlet pipe are connected with the cooling tower.
Preferably, the demister includes a drain pipe connected to a header pipe connected to an external water pipe together with the condensed water pipe.
Preferably, the gas-gas heat exchanger is connected with an induced draft fan, and the induced draft fan is connected with the flue gas calandria.
Preferably, the gas-gas heat exchanger is connected with the flue gas exhaust pipe through a heater, and the heater heats flue gas in the flue gas exhaust pipe.
Preferably, the heater comprises a steam inlet pipe and a steam outlet pipe, and high-temperature steam enters the heater from the steam inlet pipe.
Preferably, the first water outlet pipe and the second water inlet pipe are connected with a pickling device, and the first water inlet pipe is communicated with the second water outlet pipe.
Preferably, the medium inlet pipe and the medium outlet pipe are connected with a pickling device.
Preferably, the refrigeration device is provided as an absorption refrigerator.
Compared with the prior art, the heat recovery system has the advantages that the waste heat recovery heat exchanger is arranged, the waste heat recovery heat exchanger comprises the first heat exchanging part and the second heat exchanging part, the first heat exchanging part is connected with the refrigerating device and can provide refrigeration for a user side, the second heat exchanging part is connected with the heat supply station and can provide heating for the user side, and the application range is wider; the condensing heat exchanger is arranged and connected with the cooling tower, and cooling and cyclic utilization of media are realized through the cooling tower, so that resources and cost are saved; a demister is arranged to remove free water mist in the flue gas, reduce the humidity and reduce the generation of a white feather phenomenon; set up gas-gas heat exchanger, gas-gas heat exchanger is connected with the defroster, and the low temperature flue gas that comes from the defroster carries out the heat transfer with the high temperature flue gas that comes from the flue gas and advances the pipe, realizes the heat transfer cooling of the flue gas that gets into and the drying by heating of exhaust flue gas, effectively utilizes the heat in the flue gas, the energy saving, and economic benefits is good.
Drawings
Fig. 1 is a schematic overall structure diagram of a preferred embodiment of the present invention.
In the figure:
10. a gas-gas heat exchanger; 101. an induced draft fan; 20. a waste heat recovery heat exchanger; 20a, a first heat exchanging part; 20b, a second heat exchanging part; 201. a first water inlet pipe; 202. a first water outlet pipe; 203. a second water inlet pipe; 204. a second water outlet pipe; 21. a refrigeration device; 22. a heat supply station; 30. a condensing heat exchanger; 301. a condensate pipe; 302. a header; 303. a medium inlet pipe; 304. a medium outlet pipe; 40. a demister; 401. a drain pipe; 50. a cooling tower; 60. a heater; 601. a steam inlet pipe; 602. a vapor outlet pipe; 70. acid washing equipment; 80. a flue gas duct; 801. a flue gas inlet pipe; 802. flue gas calandria.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.
As shown in fig. 1, the device for recovering waste heat and eliminating white smoke from flue gas in this embodiment includes a gas-gas heat exchanger 10, a waste heat recovery heat exchanger 20, a condensing heat exchanger 30, and a demister 40, which are sequentially connected by a flue gas pipeline 80, that is, the flue gas pipeline 80 is connected between the gas-gas heat exchanger 10 and the waste heat recovery heat exchanger 20, between the waste heat recovery heat exchanger 20 and the condensing heat exchanger 30, between the condensing heat exchanger 30 and the demister 40, and the demister 40 is connected with the gas-gas heat exchanger 10 by the flue gas pipeline 80.
The waste heat recovery heat exchanger 20 includes a first heat exchanging portion 20a and a second heat exchanging portion 20b connected from top to bottom, the first heat exchanging portion 20a includes a first water inlet pipe 201 and a first water outlet pipe 202, the second heat exchanging portion 20b includes a second water inlet pipe 203 and a second water outlet pipe 204, the first heat exchanging portion 20a is connected with the refrigerating device 21 through the first water inlet pipe 201 and the first water outlet pipe 202, the first water inlet pipe 201 feeds a low-temperature medium into the first heat exchanging portion 20a, the temperature is raised after absorbing the heat in the flue gas, the heated high-temperature medium is discharged through the first water outlet pipe 202 and sent into the refrigerating device 21 for cooling, the cooled low-temperature medium enters the first heat exchanging part 20a through the first water inlet pipe 201 for heat exchanging and cooling for the subsequent flue gas, the refrigerating device 21 is connected with an external user end, when the temperature is high in summer, the refrigeration is realized to the user side through the refrigeration device 21, and the air conditioner system can be used in a matched mode; the second heat exchanging part 20b is connected with the heat supply station 22 through a second water inlet pipe 203 and a second water outlet pipe 204, a low-temperature medium enters the second heat exchanging part 20b through the second water inlet pipe 203, the temperature rises after absorbing heat in the flue gas, the high-temperature medium after the temperature rise enters the heat supply station 22 through the second water outlet pipe 204, and the high-temperature medium supplies external heat-taking equipment to take heat when the temperature in winter is lower, so that the heat in the flue gas is recycled.
Preferably, the refrigerating device 21 is an absorption refrigerator.
Flue gas gets into condensation heat exchanger 30 through waste heat recovery heat exchanger 20, condensation heat exchanger 30 is connected with cooling tower 50, one side of condensation heat exchanger 30 is equipped with condensate pipe 301, low temperature medium gets into carries out the heat transfer cooling to the flue gas in condensation heat exchanger 30, the thermal high temperature medium of flue gas has been absorbed, get into cooling tower 50 from condensation heat exchanger 30 again and carry out cooling, in the cooling process to the flue gas, partial water smoke and impurity condensate water, discharge through condensate pipe 301 again, realize heat transfer medium's cyclic utilization through cooling tower 50, and the cost is saved, and economic benefits is good, reduce the water smoke content in the flue gas through condensation heat exchanger 30, reduce flue gas humidity, reduce the white feather phenomenon.
The condensing heat exchanger 30 comprises a medium inlet pipe 303 and a medium outlet pipe 304, the medium inlet pipe 303 and the medium outlet pipe 304 are connected with the cooling tower 50, cooling media enter the condensing heat exchanger 30 from the cooling tower 50 through the medium inlet pipe 303, and the cooling media are conveyed to the cooling tower 50 through the medium outlet pipe 304 after absorbing heat in flue gas, so that the cyclic utilization of the cooling media is realized, and water resources are saved.
After the flue gas is dehumidified by the condensing heat exchanger 30, the flue gas enters the demister 40 through the flue gas pipeline 80, the demister 40 removes atomized free water in the flue gas, the demister 40 comprises a drain pipe 401, condensed water is discharged through the drain pipe 401, in the embodiment, the condensed water pipe 301 and the drain pipe 401 are connected to the collecting pipe 302, and the collecting pipe 302 is connected with an external pipeline to realize water drainage.
After the low-temperature flue gas passes through the demister 40, the low-temperature flue gas enters the gas-gas heat exchanger 10 through the flue gas pipeline 80, the low-temperature flue gas serves as a heat exchange medium to exchange heat and cool the high-temperature flue gas from the flue gas inlet pipe 801, the high-temperature flue gas heats and dries the low-temperature flue gas, and the dried flue gas is discharged through the flue gas exhaust pipe 802.
In this embodiment, the gas-gas heat exchanger 10 is connected to an induced draft fan 101, and the induced draft fan 101 is connected to the flue gas exhaust pipe 802, so as to facilitate the exhaust of flue gas.
In this embodiment, the gas-gas heat exchanger 10 is connected to the flue gas exhaust pipe 802 through the heater 60, and the heater 60 is used for heating and drying the flue gas from the gas-gas heat exchanger 10, so as to further improve the drying effect of the flue gas, and when the temperature of the high-temperature flue gas from the flue gas inlet pipe 801 cannot meet the drying requirement, the heater 60 is started to heat the flue gas again, thereby effectively reducing the generation of the white feather phenomenon.
Preferably, the heater 60 is heated by steam, the heater 60 includes a steam inlet pipe 601 and a steam outlet pipe 602, the steam inlet pipe 601 is used for realizing the inlet of high-temperature steam, the high-temperature steam heats the flue gas, and the low-temperature steam after the heat is absorbed by the flue gas is discharged through the steam outlet pipe 602.
In this embodiment, still include pickling installation 70, pickling installation 70 is connected with waste heat recovery heat exchanger 20 and condensation heat exchanger 30, washs when the heat exchanger shuts down, reduces incrustation scale and impurity in the heat exchanger, increase of service life.
Preferably, the pickling device 70 is connected to a first water outlet pipe 202 and a second water inlet pipe 203 of the waste heat recovery heat exchanger 20, and the first water inlet pipe 201 is communicated with a second water outlet pipe 204, so as to clean the waste heat exchanger 20.
Preferably, the pickling device 70 is connected to the medium inlet pipe 303 and the medium outlet pipe 304 of the condensation heat exchanger 30 to clean the condensation heat exchanger 30.
The working principle of the utility model is as follows:
high-temperature flue gas to be treated enters the gas-gas heat exchanger 10 through the flue gas inlet pipe 801 to be subjected to heat exchange and temperature reduction, the flue gas enters the waste heat recovery heat exchanger 20 through the flue gas pipeline 80, the waste heat recovery heat exchanger 20 is subjected to heat exchange and temperature reduction, water mist in the flue gas is condensed into water and is discharged through the condensate pipe 301, the flue gas enters the demister 40 from the flue gas pipeline 80 to be subjected to demisting and drying, free water in the flue gas is condensed into water and is discharged through the drain pipe 401, the demisted flue gas enters the gas-gas heat exchanger 10 from the flue gas pipeline 80, the demisted flue gas is heated and dried by the high-temperature flue gas from the flue gas inlet pipe 801, and the dried flue gas is discharged through the flue gas exhaust pipe 802.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a waste heat recovery of flue gas and white device that disappears which characterized in that: include gas heat exchanger (10), waste heat recovery heat exchanger (20), condensation heat exchanger (30) and defroster (40) that are connected gradually by flue gas pipeline (80), defroster (40) with gas heat exchanger (10) pass through flue gas pipeline (80) are connected, flue gas inlet pipe (801) and flue gas calandria (802) are connected to gas heat exchanger (10), waste heat recovery heat exchanger (20) include by last first heat transfer portion (20a) and second heat transfer portion (20b) that connect gradually from bottom to top, first heat transfer portion (20a) are connected with refrigerating plant (21), second heat transfer portion (20b) are connected with heating plant (22), condensation heat exchanger (30) are connected with cooling tower (50), condensation heat exchanger (30) include condensate pipe (301).
2. The waste heat recovery and white elimination device of flue gas of claim 1, characterized in that: the first heat exchanging part (20a) comprises a first water inlet pipe (201) and a first water outlet pipe (202), the second heat exchanging part (20b) comprises a second water inlet pipe (203) and a second water outlet pipe (204), the first water inlet pipe (201) and the first water outlet pipe (202) are connected with the refrigerating device (21), and the second water inlet pipe (203) and the second water outlet pipe (204) are connected with the heating station (22).
3. The waste heat recovery and white elimination device of flue gas of claim 1, characterized in that: the condensing heat exchanger (30) comprises a medium inlet pipe (303) and a medium outlet pipe (304), and the medium inlet pipe (303) and the medium outlet pipe (304) are connected with the cooling tower (50).
4. The waste heat recovery and white elimination device of flue gas of claim 1, characterized in that: the demister (40) comprises a drain pipe (401), the drain pipe (401) and the condensed water pipe (301) are connected to a header (302), and the header (302) is connected with an external water pipe.
5. The waste heat recovery and white elimination device of flue gas of claim 1, characterized in that: the gas-gas heat exchanger (10) is connected with an induced draft fan (101), and the induced draft fan (101) is connected with the flue gas calandria (802).
6. The waste heat recovery and white elimination device of flue gas of claim 1, characterized in that: the gas-gas heat exchanger (10) is connected with the flue gas exhaust pipe (802) through a heater (60), and the heater (60) heats flue gas in the flue gas exhaust pipe (802).
7. The waste heat recovery and white elimination device of flue gas of claim 6, characterized in that: the heater (60) comprises a steam inlet pipe (601) and a steam outlet pipe (602), and high-temperature steam enters the heater (60) from the steam inlet pipe (601).
8. The waste heat recovery and white elimination device of flue gas of claim 2, characterized in that: the first water outlet pipe (202) and the second water inlet pipe (203) are connected with the pickling device (70), and the first water inlet pipe (201) is communicated with the second water outlet pipe (204).
9. The waste heat recovery and white elimination device of flue gas of claim 3, characterized in that: the medium inlet pipe (303) and the medium outlet pipe (304) are connected with a pickling device (70).
10. The waste heat recovery and white elimination device of flue gas of claim 1, characterized in that: the refrigerating device (21) is configured as an absorption refrigerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121865550.1U CN215909080U (en) | 2021-08-10 | 2021-08-10 | Waste heat recovery and white device that disappears of flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121865550.1U CN215909080U (en) | 2021-08-10 | 2021-08-10 | Waste heat recovery and white device that disappears of flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215909080U true CN215909080U (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121865550.1U Active CN215909080U (en) | 2021-08-10 | 2021-08-10 | Waste heat recovery and white device that disappears of flue gas |
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| CN (1) | CN215909080U (en) |
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2021
- 2021-08-10 CN CN202121865550.1U patent/CN215909080U/en active Active
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