CN221310050U - Closed circulation system for condensing flue gas - Google Patents
Closed circulation system for condensing flue gas Download PDFInfo
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- CN221310050U CN221310050U CN202322985125.1U CN202322985125U CN221310050U CN 221310050 U CN221310050 U CN 221310050U CN 202322985125 U CN202322985125 U CN 202322985125U CN 221310050 U CN221310050 U CN 221310050U
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- flue gas
- closed
- circulation
- heat exchanger
- circulating water
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 239000003546 flue gas Substances 0.000 title claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 127
- 238000001816 cooling Methods 0.000 claims abstract description 61
- 238000009833 condensation Methods 0.000 claims abstract description 7
- 230000005494 condensation Effects 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 claims description 11
- 239000003595 mist Substances 0.000 claims 2
- 239000000428 dust Substances 0.000 abstract description 18
- 239000003570 air Substances 0.000 description 14
- 239000000779 smoke Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a closed circulation system of condensation flue gas, including chimney and closed cooling tower, the closed cooling tower sets up the chimney outside, wherein, be provided with heat exchanger and defroster in the chimney, the defroster sets up in the heat exchanger top, be provided with the cooling tube set in the closed cooling tower, be provided with circulation water supply line and circulation return line between chimney and the closed cooling tower, heat exchanger and cooling tube set pass through circulation water supply line and circulation return line and are connected, be full of circulating water in the heat exchanger, circulating water accessible circulation return line flows into the cooling tube set, in the cooling tube set is cooled back again by circulation return line inflow heat exchanger. By the closed circulation system for condensing the flue gas, the flue gas can be effectively condensed and dedusted before being discharged, so that the flue gas is prevented from carrying a large amount of water vapor and polluting dust and is discharged into the atmosphere, and the atmosphere environment is protected.
Description
Technical Field
The utility model belongs to the technical field of flue gas treatment, and particularly relates to a closed circulation system for condensing flue gas.
Background
In industrial production, fuel such as fire coal, petroleum, gas and the like is required in the production process, and a large amount of smoke is generated by combustion.
According to the environment-friendly requirement, the flue gas is required to be treated by desulfurization, pin removal and the like before being discharged, but the treated flue gas still contains a large amount of water vapor, a large amount of polluted gas and dust are wrapped in the water vapor, the flue gas is discharged through a chimney, the large amount of water vapor brings pollutants into the atmosphere to cause atmospheric pollution, if the flue gas encounters cold air to be condensed into water, raindrops are formed around the chimney and fall around equipment, corrosion can be caused to the equipment, and the service life of the equipment is shortened.
Therefore, the flue gas is required to be condensed, so that the flue gas is prevented from carrying a large amount of water vapor to pollute the environment, and a large amount of dust can be wrapped in the flue gas condensation process, so that the dust removal effect is realized. To solve the problem, the company develops a closed circulation system for condensing the flue gas.
Based on the above description, there is a need for a closed circulation system for condensing flue gas, which can condense and remove dust from the flue gas before the flue gas is discharged, so as to prevent the flue gas from carrying a large amount of water vapor and polluting dust and discharging into the atmosphere, and protect the atmosphere.
Disclosure of utility model
The utility model aims to provide a closed circulation system for condensing flue gas, which is used for solving the problems that the flue gas discharged by an industrial chimney contains a large amount of water vapor and pollutes dust.
In order to achieve the above purpose, the specific technical scheme of the closed circulation system of the condensed flue gas of the utility model is as follows:
The utility model provides a closed circulation system of condensation flue gas, including chimney and closed cooling tower, the closed cooling tower sets up the chimney outside, wherein, be provided with heat exchanger and defroster in the chimney, the defroster sets up in the heat exchanger top, be provided with the cooling tube set in the closed cooling tower, be provided with circulation water supply line and circulation return line between chimney and the closed cooling tower, heat exchanger and cooling tube set pass through circulation water supply line and circulation return line and are connected, be full of circulating water in the heat exchanger, circulating water accessible circulation return line flows into the cooling tube set, in the cooling tube set is cooled back again by circulation return line inflow heat exchanger.
Further, a circulating water tank is arranged between the cooling pipe group and the circulating water supply pipeline.
Further, the demister is a ridge type demister.
Further, a circulating water pump is arranged on the circulating water supply pipe, and the horizontal height of one end of the circulating water return pipe close to the heat exchange pipe is higher than that of one end of the circulating water return pipe close to the cooling pipe group.
Further, the closed cooling tower further comprises a spraying assembly and an air guiding assembly.
Further, the cooling tube set includes a light tube set.
The closed circulation system of the condensed flue gas has the following advantages:
Firstly, the closed circulation system of the condensed smoke uses the heat exchanger and the demister to condense and remove dust from the smoke, so that the smoke can be effectively prevented from carrying a large amount of water vapor and dust and being discharged into the atmosphere, and the atmospheric environment is protected; meanwhile, the ridge type demister adopted by the utility model can increase demisting area in a limited horizontal space, improve demisting efficiency and ensure the dewatering and dedusting effects of smoke dust. And secondly, according to the closed circulation system for condensing the flue gas, the circulating water in the chimney heat exchanger is cooled through the closed cooling tower arranged outside the chimney, so that the circulating water in the heat exchanger is ensured to maintain an effective condensation temperature range, and the condensation effect of the heat exchanger on the flue gas is ensured. And the circulating water tank can not only ensure continuous and stable water supply of the heat exchanger, but also play a role in water storage, thereby ensuring safe and stable operation of the system. In addition, in the whole circulation process, the circulating water adopts softened water and always flows in the closed circulation pipeline, so that the circulating water is not in direct contact with air, smoke dust, spray water and the like, is pure and free of dirt, can ensure that the inside of the heat exchanger is always clean, and cannot cause dirt blockage to influence the stable operation of the system.
Drawings
FIG. 1 is a schematic view of a first embodiment of the closed circulation system of the condensed fumes of the utility model;
FIG. 2 is a schematic view of a second embodiment of the closed circulation system of the condensed fumes of the utility model;
In the figure:
10. A chimney; 11. a chimney wall; 12. an air inlet; 13. an air outlet; 14. a heat exchanger; 15. a ridge-type demister; 16. a first water inlet; 17. a first water outlet; 20. A closed cooling tower; 21. a second water inlet; 22. a second water outlet; 30. a circulation water tank; 31. a third water inlet; 32. a third water outlet; 41. a circulation water supply line; 42. a circulating water return pipeline; 43. and (3) a circulating water pump.
Detailed Description
For a better understanding of the objects, structures and functions of the present utility model, a closed circulation system for condensing flue gas according to the present utility model will be described in further detail with reference to the accompanying drawings.
As a first embodiment, as shown in fig. 1, the closed circulation system of condensed flue gas of the present utility model includes a chimney 10, a closed cooling tower 20.
The chimney 10 is used for discharging flue gas, as shown in fig. 1, is of a hollow cylindrical structure surrounded by a chimney wall 11, an air inlet 12 is arranged at the bottom, an air outlet 13 is arranged at the top, a heat exchanger 14 and a demister are respectively arranged in the chimney wall from bottom to top, circulating water flowing in the heat exchanger 14 is arranged, the temperature of the circulating water is lower than that of flue gas, the flue gas enters the chimney 10 from the air inlet 12, heat exchange is carried out between the flue gas and the circulating water in the heat exchanger through the heat exchanger 14, the circulating water absorbs heat of the flue gas, the temperature of the flue gas is reduced, the moisture content is reduced, condensed water is generated, and a large amount of dust in the flue gas is wrapped in the condensed water. The condensed water carried by the flue gas after heat exchange continuously passes through the demister upwards, and the demister can collect and remove the condensed water in the flue gas and dust wrapped in the condensed water. The flue gas can be prevented from carrying a large amount of water vapor and dust to be discharged into the atmosphere through condensation of the heat exchanger and water and dust removal of the demister, and the atmospheric environment is protected.
Further, the demister may be a flat plate type dust remover, preferably, as shown in fig. 1, the closed circulation system of condensed flue gas of the utility model adopts a ridge type demister 15, and the ridge type demister 15 can increase demisting area in a limited horizontal space, improve demisting efficiency and ensure water and dust removal effect of smoke dust.
After the circulating water in the heat exchanger 14 exchanges heat with the flue gas, the heat of the flue gas is absorbed, the temperature of the circulating water is increased, and in order to ensure the condensing effect of the heat exchanger 14 on the flue gas, the circulating water in the heat exchanger needs to maintain an effective condensing temperature range, namely, after the circulating water exchanges heat, cooling treatment is needed. The closed circulation system of the condensed flue gas of the present utility model thus also comprises a closed cooling tower 20 for cooling the circulating water. As shown in fig. 1, the closed cooling tower 20 is disposed outside the stack 10. The closed cooling tower 20 is provided therein with a cooling pipe group, a spray assembly, an air guide assembly, etc. (not shown). The cooling tube group is used for realizing cooling of the circulating water through heat exchange of the circulating water, air and spray water, can be connected in series with the light tube group by the fin tube group, and can realize a secondary cooling mode combining air cooling and spray cooling, and can also only adopt a spray cooling mode of the light tube group. The spray system is used for storing, outputting, cooling, recycling and the like of spray water, can uniformly spray the spray water on the surface of the light pipe set, forms a uniform water film outside the light pipe set, continuously evaporates and vaporizes the water film, absorbs heat of a medium in the light pipe set and realizes medium cooling in the light pipe set. The air guide system is used for bringing cold air outside the closed cooling tower into the closed cooling tower and forming bottom-up airflow in the closed cooling tower.
Further, as shown in fig. 1, a circulating water supply pipeline 41 and a circulating water return pipeline 42 are arranged between the chimney 10 and the closed cooling tower 20, as shown in fig. 1, a first water inlet 16 and a first water outlet 17 are respectively arranged at two ends of the heat exchanger 14 of the chimney, a second water inlet 21 and a second water outlet 22 are respectively arranged at two ends of the cooling pipe group of the closed cooling tower, two ends of the circulating water return pipeline 42 are respectively connected with the first water outlet 17 and the second water inlet 21, and two ends of the circulating water supply pipeline 41 are respectively connected with the second water outlet 22 and the first water inlet 16. When the system works, circulating water completes heat exchange with smoke in the chimney heat exchanger 14, the temperature rises, the circulating water sequentially passes through the first water outlet 17, the circulating water return pipeline 42 and the second water inlet 21, enters a cooling pipe group of the closed cooling tower 20, is cooled down, sequentially passes through the second water outlet 22, the circulating water supply pipeline 41 and the first water inlet 16, enters the chimney heat exchanger 14, and continues to perform heat exchange with the smoke. In order to ensure the circulation of the circulating water in the pipeline, it is conceivable that a circulating water pump 43 is provided on the circulating water supply pipeline 41, as shown in fig. 1, and the level of the first water outlet 17 should be higher than that of the second water inlet 21.
As a second embodiment, in order to ensure continuous and stable water supply of the chimney heat exchanger, a circulating water tank 30 is further disposed between the closed cooling tower 20 and the circulating water supply pipeline 41, as shown in fig. 2, a third water inlet 31 is disposed at the upper portion of the circulating water tank 30, a third water outlet 32 is disposed at the lower portion of the circulating water tank, as shown in fig. 2, the third water inlet 31 is connected with the second water outlet 22, and a circulating water pump 43 is disposed at the third water outlet 32 and is connected with the circulating water supply pipeline 41 through the circulating water pump 43. When the system works, after the closed cooling tower 20 finishes cooling, circulating water firstly flows into a circulating water tank from a third water inlet 31 for temporary storage and buffering, then flows out from a third water outlet 32 at the lower part, and enters the chimney heat exchanger 14 under the action of a circulating water pump 43. It is conceivable that the circulation water tank 30 can also accommodate and compensate the expansion and contraction amount of the circulating water in the circulation pipeline due to the temperature difference between the cold and the hot, and plays a role of water storage, thereby ensuring safe and stable operation of the pipeline and the system.
It can be seen that in the whole circulation process, circulating water always flows in the closed circulation pipeline, and cannot directly contact with air, smoke dust, spray water and the like, so that the circulating water is pure and free of dirt. Preferably, the circulating water can be softened water, so that the scale is not easy to form. The heat exchanger can be guaranteed to be always clean, and stable operation of the system cannot be influenced by dirty blockage.
It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. The utility model provides a closed circulation system of condensation flue gas, including chimney and closed cooling tower, the closed cooling tower sets up the chimney outside, its characterized in that is provided with heat exchanger and defroster in the chimney, the defroster sets up in the heat exchanger top, be provided with the cooling tube set in the closed cooling tower, be provided with circulation water supply line and circulation return line between chimney and the closed cooling tower, the heat exchanger passes through circulation water supply line and circulation return line with the cooling tube set and is connected, be full of circulating water in the heat exchanger, circulating water accessible circulation return line flows into the cooling tube set, by circulation return line inflow heat exchanger after cooling in the cooling tube set.
2. The closed circulation system of condensed flue gas according to claim 1, wherein a circulation water tank is further provided between the cooling tube group and the circulation water supply line.
3. The closed circulation system of condensed flue gas of claim 1, wherein the mist eliminator is a ridge mist eliminator.
4. The closed circulation system of condensed flue gas according to claim 2, wherein a circulating water pump is arranged on the circulating water supply pipe, and the level of one end of the circulating water return pipe close to the heat exchange pipe is higher than that of one end of the circulating water return pipe close to the cooling pipe group.
5. The closed circulation system of condensed flue gas of claim 1, wherein the closed cooling tower further comprises a spray assembly and an air guide assembly.
6. The closed circulation system of condensed flue gas of claim 5, wherein the cooling tube stack comprises a light tube stack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322985125.1U CN221310050U (en) | 2023-11-06 | 2023-11-06 | Closed circulation system for condensing flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322985125.1U CN221310050U (en) | 2023-11-06 | 2023-11-06 | Closed circulation system for condensing flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221310050U true CN221310050U (en) | 2024-07-12 |
Family
ID=91793307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322985125.1U Active CN221310050U (en) | 2023-11-06 | 2023-11-06 | Closed circulation system for condensing flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221310050U (en) |
-
2023
- 2023-11-06 CN CN202322985125.1U patent/CN221310050U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant |