CN213286338U - Low-temperature flue gas waste heat recovery and purification tower - Google Patents
Low-temperature flue gas waste heat recovery and purification tower Download PDFInfo
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- CN213286338U CN213286338U CN202021882805.0U CN202021882805U CN213286338U CN 213286338 U CN213286338 U CN 213286338U CN 202021882805 U CN202021882805 U CN 202021882805U CN 213286338 U CN213286338 U CN 213286338U
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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 relates to the technical field of auxiliary devices for flue gas purification treatment, in particular to a low-temperature flue gas waste heat recovery and purification tower which can recover waste heat in flue gas, effectively avoid the problem of smoke dust blockage and improve the purification effect of the flue gas, and comprises a tower body, wherein a working cavity is arranged inside the tower body, the bottom of the tower body is communicated with a bottom water pool, the outside bottom of the tower body is communicated with a flue gas inlet pipe, the low-temperature flue gas waste heat recovery and purification tower also comprises a first circulating pump, a second circulating pump, a buffer water tank, a first heat exchanger, a second heat exchanger, a water collecting device, a first spray thrower, a filler, a second spray thrower and a high-frequency vibration generator, the water collecting device comprises a plurality of groups of gas distributing cylinders, a sealing connecting plate and a main return pipe, two groups of flow distributing plates are arranged below the second spray thrower, the surfaces of the multiple groups of metal plates are provided with special-shaped concave-convex structures, and the output end of the high-frequency vibration generator is connected with the connecting shaft.
Description
Technical Field
The utility model relates to a flue gas purification handles the technical field of auxiliary device, especially relates to a low temperature flue gas waste heat recovery purifying tower.
Background
In the industrial production process of China, the spray tower is widely applied and mainly used for atmospheric condensation cooling of circulating water, wherein the spray tower is various in types, the filler units are designed in most towers in order to strengthen the heat exchange area, the filler units are various in modes, but the filler part generally has the problems of dirt blockage and wall surface scaling, so that the heat exchange efficiency of the spray tower is low, the spray tower needs to be shut down for maintenance regularly, the production loss is caused, and the maintenance cost is high. The total amount of smoke discharged in China is large, and although the smoke is subjected to purification treatment such as dust removal, desulfurization and the like, a large amount of fine particles and the like still exist in the smoke, so that the aim of clean discharge needs to be further strengthened.
The ultrasonic vibration technology is widely applied in China industry, wherein high-frequency vibration is generated, so that high-frequency micro-amplitude can be generated on the metal surface, the material is not easy to adhere to the metal surface, the wall surface is kept smooth, meanwhile, the water liquid on the metal surface can be instantly scattered to be changed into fine liquid through the high-efficiency action of the ultrasonic shearing force, and the atomization effect is good.
Due to the technical characteristics of ultrasonic waves, the ultrasonic waves can act on the metal plate surface, so that the metal plate surface has no attachments, good liquid atomization effect, good effects of full contact between air and liquid and the like, flue gas purification, high-efficiency dust absorption and purification in the flue gas, and the technical advantages of non-scaling and non-blocking of a spray tower filler, high-efficiency stable operation, high heat exchange efficiency and the like.
The problems of dew point corrosion, smoke dust blockage and the like are difficult to solve because the flue gas contains acidic gas and the heat exchange of the flue gas adopts a dividing wall type, and a technical means is needed to solve the industrial problems of low-temperature flue gas waste heat recovery and flue gas purification.
Disclosure of Invention
Technical problem to be solved
The utility model provides a to prior art not enough, the utility model provides a can retrieve the waste heat in the flue gas, effectively avoid the smoke and dust to block up the problem, improve the low temperature flue gas waste heat recovery purifying tower to the purifying effect of flue gas.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: a low-temperature flue gas waste heat recovery and purification tower comprises a tower body, wherein a working cavity is arranged inside the tower body, a bottom water pool is communicated with the bottom of the tower body, a flue gas inlet pipe is communicated with the bottom of the outer side of the tower body, the low-temperature flue gas waste heat recovery and purification tower further comprises a first circulating pump, a second circulating pump, a buffer water tank, a first heat exchanger, a second heat exchanger and a water collecting device, a first sprayer is arranged at the top of the working cavity, filler is arranged below the first sprayer, the water collecting device comprises a plurality of groups of gas cylinders, a sealing connecting plate and a total return pipe, the plurality of groups of gas cylinders are mounted on the sealing connecting plate and positioned below the filler, a plurality of groups of vertical return pipes are communicated with the bottom of the plurality of groups of vertical return pipes, one end of the total return pipe is communicated with the bottom of the plurality of groups of vertical return pipes, the other, the output end of the first heat exchanger is provided with a first circulating water pipe, the output end of the first circulating water pipe is communicated with a first sprayer, a second sprayer is arranged below the water collecting device, the input end of the second circulating pump is communicated with the bottom water pool, the output end of the second circulating pump is communicated with the input end of the second heat exchanger, the output end of the second heat exchanger is provided with a second circulating water pipe, the output end of the second circulating water pipe is communicated with a second sprayer, the below of second spray thrower is provided with two sets of flow distribution plates, the connecting axle that the vertical align to grid's of flow distribution plate multiunit multilayer and to going on connecting to multilayer metal sheet, the surface of multiunit metal sheet is provided with heterotypic concave-convex structure, and the outside of tower body is provided with two sets of high-frequency vibration generators, and two sets of high-frequency vibration generator's output respectively with two sets of the connecting axle links to each other.
Preferably, a bearing fastener is arranged on the inner side wall of the working cavity, and the filler is mounted on the bearing fastener.
Preferably, the bottom of the tower body is provided with a drain pipe communicated with the bottom water tank, and the drain pipe is provided with a drain valve.
Preferably, the distance between two adjacent groups of metal plates of the flow distribution plate is less than 20mm, and the connecting shaft is welded and fixed with the multiple layers of metal plates.
Preferably, the high-frequency vibration generator adopts a long-pulse ultrasonic generator.
Preferably, the tower body is one of a cylindrical tower body, a rectangular tower body and an opposite-type tower body.
Preferably, the gas cylinder is a cylinder or a rectangular cylinder, the upper end of the gas cylinder is closed, the bottom of the gas cylinder is provided with an air inlet hole, the air inlet hole is communicated with the lower part of the sealing connecting plate, and the side wall of the middle upper part of the gas cylinder is provided with a smoke outlet hole.
Preferably, the first heat exchanger adopts a tube type or plate type heat exchanger, and the second heat exchanger adopts a tube type heat exchanger.
Preferably, the overflowing parts of the first circulating pump and the second circulating pump are made of 316L or 2205 dual-phase steel corrosion-resistant materials.
(III) advantageous effects
Compared with the prior art, the utility model provides a low temperature flue gas waste heat recovery purifying tower possesses following beneficial effect:
1. in the low-temperature flue gas waste heat recovery and purification tower, the metal plate surface of the splitter plate forms a concave-convex irregular plate surface, the metal plate is connected with the high-frequency ultrasonic generator through the connecting shaft, the high-frequency vibration of the surface of the splitter plate is realized, thereby effectively preventing insoluble substances in the spraying solution from adhering to the board surface, keeping the board surface smooth, meanwhile, the energy transmission of ultrasonic waves enables the metal plate surface to vibrate slightly at high frequency, large water drops on the contact surface are crushed into micro fog drops, the violent resonance of air between the flow distribution plates and the micro fog drops is realized, thereby enlarging the contact area of water drops and air, realizing rapid contact, improving the heat exchange area of gas phase and liquid phase, improving the heat exchange efficiency, having the technical advantages of no scale formation, no blockage, high heat exchange efficiency and small equipment volume, meanwhile, the air-conditioning system has the advantages of low air resistance, low power consumption of the fan and the like, so that the technical advantages of saving the running energy consumption of the fan of the spray tower and the like are achieved.
2. The low-temperature flue gas waste heat recovery and purification tower adopts a mode of circulating cooling water for layered circulation and sectional heat extraction, and has the advantages that the designed bottom spraying structure can adopt high-boiling-point solution such as calcium chloride solution and lithium chloride solution, the main function is to realize the washing and purification of flue gas, dust, acid gas and the like in the flue gas are absorbed in the high-boiling-point solution, the purified flue gas enters the upper end packing, spraying, cooling and heat exchange units, the difficult problems of packing blockage and scaling corrosion of a heat exchanger are avoided, the manufacturing cost is reduced, meanwhile, the multi-layer sectional heat exchange layer can be further designed and expanded in combination with actual requirements, the sectional and step recovery and utilization of the heat energy of the flue gas are realized, the purposes of full recovery of the flue gas waste heat and recovery of condensed water in the flue gas are further realized, and the dew point corrosion, which is generated by the contact of a dividing wall type heat exchanger and the, Dust deposition, scar formation and abnormal and stable operation of equipment.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
in the drawings, the reference numbers: 1. a tower body; 2. a bottom water pool; 3. a flue gas inlet pipe; 4. a first circulation pump; 5. a second circulation pump; 6. a buffer water tank; 7. a first heat exchanger; 8. a second heat exchanger; 9. a first sprayer; 10. a filler; 11. a gas cylinder; 12. sealing the connecting plate; 13. a main return pipe; 14. a vertical return pipe; 15. a first circulating water pipe; 16. a second sprayer; 17. a second circulating water pipe; 18. a flow distribution plate; 19. a connecting shaft; 20. a high frequency vibration generator; 21. a load bearing fastener; 22. a sewage discharge pipe.
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.
Referring to fig. 1, a low-temperature flue gas waste heat recovery and purification tower comprises a tower body 1, a working chamber is arranged inside the tower body 1, a bottom water tank 2 is arranged at the bottom of the tower body 1 in a communicating manner, a flue gas inlet pipe 3 is arranged at the bottom of the outer side of the tower body 1 in a communicating manner, the low-temperature flue gas waste heat recovery and purification tower further comprises a first circulating pump 4, a second circulating pump 5, a buffer water tank 6, a first heat exchanger 7, a second heat exchanger 8 and a water collecting device, a first sprayer 9 is arranged at the top of the working chamber, a filler 10 is arranged below the first sprayer 9, the water collecting device comprises a multi-component gas cylinder 11, a sealing connecting plate 12 and a main return pipe 13, the multi-component gas cylinder 11 is arranged on the sealing connecting plate 12 and is positioned below the filler 10, a plurality of groups of vertical return pipes 14 are arranged at the bottom, the other end of the main return pipe 13 is communicated with the buffer water tank 6, the input end and the output end of the first circulating pump 4 are respectively communicated with the buffer water tank 6 and the input end of the first heat exchanger 7, the output end of the first heat exchanger 7 is provided with a first circulating water pipe 15, the output end of the first circulating water pipe 15 is communicated with a first sprayer 9, a second sprayer 16 is arranged below the water collecting device, the input end of the second circulating pump 5 is communicated with the bottom water pool 2, the output end of the second circulating pump 5 is communicated with the input end of the second heat exchanger 8, the output end of the second heat exchanger 8 is provided with a second circulating water pipe 17, the output end of the second circulating water pipe 17 is communicated with the second sprayer 16, two groups of splitter plates 18 are arranged below the second sprayer 16, the splitter plates 18 are provided with a plurality of groups of vertically and uniformly arranged metal plates and connecting shafts 19 for connecting the plurality of layers of metal plates, the surface of the plurality of groups of metal plates is provided with a special-shaped concave-convex structure, the outer side of the tower body 1 is provided with two groups of high-frequency vibration generators 20, and the output ends of the two groups of high-frequency vibration generators 20 are respectively connected with the two groups of connecting shafts 19.
And a bearing fastener 21 is arranged on the inner side wall of the working cavity, and the filler 10 is arranged on the bearing fastener 21.
The bottom of the tower body 1 is provided with a sewage discharge pipe 22 communicated with the bottom water tank 2, and the sewage discharge pipe 22 is provided with a sewage discharge valve.
The distance between two adjacent groups of metal plates of the flow distribution plate 18 is less than 20mm, and the connecting shaft 19 is welded and fixed with the multiple layers of metal plates.
The high-frequency vibration generator 20 employs a long pulse ultrasonic generator.
The tower body 1 is one of a cylindrical tower body 1, a rectangular tower body 1 and an opposite-nature tower body 1.
The gas cylinder 11 is a cylinder or a rectangular cylinder, the upper end of the gas cylinder 11 is closed, the bottom of the gas cylinder is provided with an air inlet hole, the air inlet hole is communicated with the lower part of the sealing connecting plate 12, and the side wall of the middle upper part is provided with a smoke outlet hole.
The first heat exchanger 7 adopts a tube type or plate type heat exchanger, and the second heat exchange gas adopts a tube type heat exchanger.
The overflowing parts of the first circulating pump 4 and the second circulating pump 5 are made of 316L or 2205 dual-phase steel corrosion-resistant materials.
When in use, smoke enters the tower body 1 through the smoke inlet pipe 3 and passes through the splitter plate 18, the metal plate surface of the splitter plate 18 forms an irregular concave plate surface, the metal plate is connected with the high-frequency ultrasonic generator through the connecting shaft 19, the high-frequency vibration of the surface of the splitter plate 18 is realized, so that the adhesion of insoluble substances in a spraying solution on the plate surface is effectively prevented, the plate surface is kept smooth, meanwhile, the energy transmission of ultrasonic waves is realized, the metal plate surface vibrates in a high-frequency mode, water drops on the contact surface are crushed into micro fog drops, the violent resonance of air and the micro fog drops between the splitter plates 18 is realized, the contact area of the water drops and the air is enlarged, the quick contact is realized, the heat exchange area of gas phase and liquid phase is improved, the heat exchange efficiency is improved, then the high-boiling-point solution is pumped to the second sprayer 16 through the second circulating pump 5 and sprayed, the primary purification heat exchange is realized, spray water falls into a bottom water tank 2 and circulates through a second circulating pump 5, then the flue gas enters from an air inlet at the bottom of a gas separating cylinder 11 and is led out through an air outlet on the side wall, the uniform distribution and the stable flow of the flue gas are realized, the water of a buffer water tank 6 is pumped to a first sprayer 9 through a first circulating pump 4 and is sprayed out, the flue gas is reversely sprayed at a filler 10, the spray water falls on a sealing connecting plate 12 and flows back to the buffer water tank 6 through a vertical return pipe 14 and a total return pipe 13, a circulating cooling water layered circulation and segmented heat taking mode is adopted, and the device has the advantages that due to a designed bottom layer spraying structure, high-boiling-point solutions such as calcium chloride solution and lithium chloride solution can be adopted, the main functions of washing and purifying the flue gas are realized, dust, acid gas and the like in the flue gas are absorbed into the high-boiling-point solution, and the, In the spraying, cooling and heat exchange units, the difficult problems of filler blockage and scaling corrosion of the heat exchanger are avoided, the manufacturing cost is reduced, and meanwhile, the heat exchange layer which is designed into a plurality of layers and sections can be further designed and expanded by combining with actual requirements, so that the sectional step recovery and utilization of the heat energy of the flue gas are realized, and the purposes of full recovery of the waste heat of the flue gas and recovery of condensed water in the flue gas are further achieved.
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.
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
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 (9)
1. The utility model provides a low temperature flue gas waste heat recovery purifying tower, includes tower body (1), and the inside of tower body (1) is provided with the working chamber, and the bottom intercommunication of tower body (1) is provided with bottom pond (2), and the outside bottom intercommunication of tower body (1) is provided with flue gas inlet pipe (3), its characterized in that still includes first circulating pump (4), second circulating pump (5), buffer tank (6), first heat exchanger (7), second heat exchanger (8) and receives water installation, the top of working chamber is provided with first spray thrower (9), and the below of first spray thrower (9) is provided with filler (10), receive water installation including multiunit gas cylinder (11), sealing connection board (12) and total back flow (13), multiunit gas cylinder (11) are installed on sealing connection board (12) and are located the below of filler (10), the bottom intercommunication of sealing connection board (12) is provided with multiunit vertical back flow (14), one end of the main return pipe (13) is communicated with the bottom ends of a plurality of groups of vertical return pipes (14), the other end of the main return pipe (13) is communicated with the buffer water tank (6), the input end and the output end of the first circulating pump (4) are respectively communicated with the buffer water tank (6) and the input end of the first heat exchanger (7), the output end of the first heat exchanger (7) is provided with a first circulating water pipe (15), the output end of the first circulating water pipe (15) is communicated with the first sprayer (9), a second sprayer (16) is arranged below the water collecting device, the input end of the second circulating pump (5) is communicated with the bottom water pool (2), the output end of the second circulating pump (5) is communicated with the input end of the second heat exchanger (8), the output end of the second circulating water pipe (17) is arranged on the output end of the second heat exchanger (8), and the output end of the second circulating water pipe (17) is communicated with the second sprayer (16), the below of second spray thrower (16) is provided with two sets of flow distribution plate (18), flow distribution plate (18) the vertical align to grid's of multiunit multilayer metal sheet and connecting axle (19) that go on connecting to multilayer metal sheet, the surface of multiunit metal sheet is provided with heterotypic concave-convex structure, and the outside of tower body (1) is provided with two sets of high-frequency vibration generator (20), and the output of two sets of high-frequency vibration generator (20) is respectively with two sets of connecting axle (19) link to each other.
2. The low-temperature flue gas waste heat recovery and purification tower as claimed in claim 1, wherein a load-bearing fastener (21) is arranged on the inner side wall of the working chamber, and the filler (10) is mounted on the load-bearing fastener (21).
3. The low-temperature flue gas waste heat recovery and purification tower as claimed in claim 1, wherein a drain pipe (22) communicated with the bottom water tank (2) is arranged at the bottom of the tower body (1), and a drain valve is arranged on the drain pipe (22).
4. The low-temperature flue gas waste heat recovery and purification tower of claim 1, wherein the distance between two adjacent metal plates of the flow distribution plate (18) is less than 20mm, and the connecting shaft (19) is welded and fixed with the multiple layers of metal plates.
5. The low-temperature flue gas waste heat recovery and purification tower as claimed in claim 1, wherein the high-frequency vibration generator (20) adopts a long-pulse ultrasonic generator.
6. The low-temperature flue gas waste heat recovery and purification tower of claim 1, wherein the tower body (1) is one of a cylindrical tower body (1), a rectangular tower body (1) and an anisotropic tower body (1).
7. The low-temperature flue gas waste heat recovery and purification tower as claimed in claim 1, wherein the gas distribution cylinder (11) is a cylinder or a rectangular cylinder, the upper end of the gas distribution cylinder (11) is closed, the bottom of the gas distribution cylinder is provided with a gas inlet hole, the gas inlet hole is communicated with the lower part of the sealing connection plate (12), and the side wall of the middle upper part of the gas distribution cylinder is provided with a smoke outlet hole.
8. The low-temperature flue gas waste heat recovery and purification tower of claim 1, wherein the first heat exchanger (7) is a tubular or plate heat exchanger, and the second heat exchanger is a tubular heat exchanger.
9. The low-temperature flue gas waste heat recovery and purification tower of claim 1, wherein the flow passing pieces of the first circulating pump (4) and the second circulating pump (5) are made of 316L or 2205 dual-phase steel corrosion-resistant materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021882805.0U CN213286338U (en) | 2020-09-01 | 2020-09-01 | Low-temperature flue gas waste heat recovery and purification tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021882805.0U CN213286338U (en) | 2020-09-01 | 2020-09-01 | Low-temperature flue gas waste heat recovery and purification tower |
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| CN213286338U true CN213286338U (en) | 2021-05-28 |
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| CN202021882805.0U Active CN213286338U (en) | 2020-09-01 | 2020-09-01 | Low-temperature flue gas waste heat recovery and purification tower |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116357994A (en) * | 2023-04-12 | 2023-06-30 | 施龙平 | Thermal power generation waste heat utilization method |
| CN117000018A (en) * | 2023-09-28 | 2023-11-07 | 福建德尔科技股份有限公司 | Alkali liquor spray tower for chloride treatment and application method thereof |
-
2020
- 2020-09-01 CN CN202021882805.0U patent/CN213286338U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116357994A (en) * | 2023-04-12 | 2023-06-30 | 施龙平 | Thermal power generation waste heat utilization method |
| CN116357994B (en) * | 2023-04-12 | 2024-05-28 | 华电国际电力股份有限公司十里泉发电厂 | Thermal power generation waste heat utilization device and utilization method |
| CN117000018A (en) * | 2023-09-28 | 2023-11-07 | 福建德尔科技股份有限公司 | Alkali liquor spray tower for chloride treatment and application method thereof |
| CN117000018B (en) * | 2023-09-28 | 2023-12-19 | 福建德尔科技股份有限公司 | Alkali liquor spray tower for chloride treatment and application method thereof |
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Effective date of registration: 20230504 Address after: No. A2176, 2nd Floor, College Park, Zhongguancun Dongsheng Science and Technology Park, No.1 Xueqing Road, Haidian District, Beijing, 100088 Patentee after: Beijing shangruoshui Environmental Protection Technology Co.,Ltd. Address before: 4010, 4011, 2 Huatian Road, Huayuan Industrial Zone, Binhai New Area, Tianjin 300450 Patentee before: Qingdazhongneng (Tianjin) Environmental Protection Technology Co.,Ltd. |
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