CN109099451B - Energy-saving emission-reducing white-eliminating five-element heat exchange system for flue gas - Google Patents
Energy-saving emission-reducing white-eliminating five-element heat exchange system for flue gas Download PDFInfo
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- CN109099451B CN109099451B CN201811128187.8A CN201811128187A CN109099451B CN 109099451 B CN109099451 B CN 109099451B CN 201811128187 A CN201811128187 A CN 201811128187A CN 109099451 B CN109099451 B CN 109099451B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05333—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
- F28F9/12—Arrangements for sealing elements into header boxes or end plates by dismountable joints by flange-type connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/20—Sulfur; Compounds thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/70—Condensing contaminants with coolers
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a smoke energy-saving emission-reducing and white-eliminating five-element heat exchange system, which comprises a front smoke cooler (1), a water and smoke heat exchanger (2), a desulfurizing tower (3), a condenser (4), a demister (5), a rear smoke reheater (6), a steam and smoke heat exchanger (7) and a chimney (8) which are connected in sequence; the condenser (4) is connected with a cooling tower (9) through a circulating pipeline; the front flue gas cooler (1) and the rear flue gas reheater (6) are connected through a circulating pipeline. The invention has the characteristics of improving the whitening effect, improving the utilization rate of the residual heat in the flue gas and reducing the emission of pollutants.
Description
Technical Field
The invention relates to a flue gas treatment system, in particular to a flue gas energy-saving emission-reducing and white-eliminating five-element heat exchange system.
Background
The country is a country with large energy consumption, and the energy structure is mainly made of coal. At present, 90% of coal-fired units in China adopt a limestone-gypsum wet desulfurization process, the process reduces the temperature of flue gas to about 50 ℃ and is in a saturated or supersaturated state, but low-temperature wet saturated flue gas is condensed at a chimney outlet to form a large amount of white smoke plumes (commonly called white smoke), and a photochemical reaction environment is created while visual pollution is caused; meanwhile, the initial temperature of the flue gas is higher, and the heat of the flue gas is directly discharged in the existing flue gas desulfurization treatment process, so that the utilization rate of the waste heat is lower. In addition, after the existing flue gas is subjected to desulfurization treatment, a large amount of pollutants are remained in the discharged gas, and environmental pollution is easily caused. Therefore, the prior art has the problems of unsatisfactory tail gas whitening effect, lower waste heat utilization rate and larger pollutant discharge amount.
Disclosure of Invention
The invention aims to provide a smoke energy-saving emission-reducing white-eliminating five-element heat exchange system. The invention has the characteristics of improving the whitening effect, improving the utilization rate of the residual heat in the flue gas and reducing the emission of pollutants.
The technical scheme of the invention is as follows: the five-element heat exchange system for saving energy, reducing emission and eliminating white of the flue gas comprises a front flue gas cooler, a water and flue gas heat exchanger, a desulfurizing tower, a condenser, a demister, a rear flue gas reheater, a steam and flue gas heat exchanger and a chimney which are connected in sequence; the condenser is connected with a cooling tower through a circulating pipeline; the front flue gas cooler and the rear flue gas reheater are connected through a circulating pipeline.
In the flue gas energy-saving emission-reducing and white-eliminating five-element heat exchange system, the water and flue gas heat exchanger is connected with a desalting water tank through a circulating pipeline.
In the foregoing five-element heat exchange system for energy conservation, emission reduction and white reduction of flue gas, the steam and flue gas heat exchanger comprises two end plates which are arranged in parallel, a plurality of middle partition plates are uniformly distributed between the two end plates, a plurality of heat exchange tubes which are uniformly distributed are arranged on the middle partition plates, and two ends of each heat exchange tube are fixed on the end plates; the outer wall surface of the end plate is provided with a flange plate, the flange plate is provided with an arc-shaped sealing head, and the upper end and the lower end of the arc-shaped sealing head are provided with sealing plates; a saturated steam inlet flange is arranged on the arc-shaped sealing head at one end, and a condensed water outlet pipe is arranged on the arc-shaped sealing head at the other end; and a sealing ring is also arranged between the flange plate and the end plate.
In the flue gas energy-saving emission-reducing and whitening five-element heat exchange system, a plurality of partition plates which are arranged horizontally up and down are arranged between the adjacent partition plates and between the partition plates and the end plates.
In the flue gas energy-saving emission-reducing and white-eliminating five-element heat exchange system, the partition plate comprises a partition plate body, a plurality of air guide grooves with conical sections are formed in the upper end face and the lower end face of the partition plate body, a diffusion cambered surface is arranged between the upper end of the inner wall surface of the air guide groove and the end face of the partition plate body, and a plurality of arc-shaped protrusions are arranged on the bottom face of the air guide groove.
In the flue gas energy-saving emission-reducing and white-eliminating five-element heat exchange system, the upper end face and the lower end face of the partition plate body are also provided with heat preservation coatings.
Compared with the prior art, the invention effectively improves the whitening effect of the flue gas by arranging the five-element heat exchanger consisting of the front flue gas cooler, the water and flue gas heat exchanger, the condenser, the demister, the rear flue gas reheater and the steam and flue gas heat exchanger in the tail flue of the flue gas source, can further reduce the discharge amount of pollutants such as dust/Nox/SOx, realizes the deep recycling of the flue gas waste heat and improves the recycling rate of resources. Through the mutual coordination among the front flue gas cooler, the water, the flue gas heat exchanger and the condenser, the flue gas is deeply condensed, so that the temperature of the flue gas entering the desulfurizing tower is reduced, the outlet temperature of the desulfurizing tower is also reduced, and the flue gas is condensed through the condenser, so that the temperature of the flue gas is reduced to be lower, the effect of deep condensation is achieved, and the improvement of the white flue gas treatment effect is facilitated; simultaneously, flue gas gets into the desulfurizing tower after leading flue gas cooler and water and flue gas heat exchanger twice cooling, compares former high temperature flue gas, and flue gas temperature reduces, volumetric flow reduces to can improve the desulfurization effect of desulfurizing tower, reduce the water consumption of desulfurizing tower, still reduced desulfurizing tower export flue gas temperature simultaneously, played preliminary condensation's effect. Through the cooperation between the rear flue gas reheater and the steam and flue gas heat exchanger, the flue gas after condensation can be guaranteed to be sufficiently heated, so that the whitening effect of the flue gas tail gas is improved. In addition, the water and flue gas heat exchanger is connected with the desalted water tank, so that the desalted water can recover heat in flue gas, and considerable energy benefits can be generated; the front flue gas cooler is connected with the rear flue gas heater, so that waste heat in the flue gas can be fully utilized, high-temperature flue gas in front of the desulfurizing tower heats the flue gas after the desulfurizing tower through a medium, and the waste heat is effectively utilized; the condenser removes moisture in the flue gas, and simultaneously takes away dust, NOx, SOx and the like, so that various indexes of the discharged flue gas can be reduced to a very low level. In conclusion, the invention has the characteristics of improving the whitening effect, improving the utilization rate of residual heat in the flue gas and reducing the emission of pollutants.
In addition, the structure of the steam and flue gas heat exchanger is optimized, and the fluorine plastic steel heat exchange tubes are divided into a plurality of independent spaces by arranging the plurality of partition plates which are horizontally arranged up and down between the adjacent middle partition plates and the end plates, so that flue gas can be separated, the interference of the flue gas on the adjacent heat exchange tubes can be reduced, and vibration is reduced; meanwhile, the arrangement of the partition plate can also play a role in reasonably guiding the flue gas, so that the heat exchange efficiency is effectively improved. Through set up the wind-guiding groove that the cross-section is conical structure at the division board up and down terminal surface, set up the diffusion cambered surface simultaneously in wind-guiding groove upper end for the flue gas can be in the independent region that is formed by the division board separation, improves heat exchange efficiency, improves and sets up the arc arch at wind-guiding groove bottom, can play the purpose of vortex to the flue gas, can slow down the pressure of flue gas to the division board again, improves the bearing strength of division board. Through set up the heat preservation coating at the upper and lower both ends face of division board body, can further reduce the interference between each single degree heat transfer region, can also improve heat exchange efficiency.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a steam-to-flue gas heat exchanger;
FIG. 3 is a perspective view of a steam and flue gas heat exchanger;
fig. 4 is a schematic structural view of the partition plate;
fig. 5 is a partial top view of the divider plate.
The marks in the drawings are: 1-front flue gas cooler, 2-water and flue gas heat exchanger, 3-desulfurizing tower, 4-condenser, 5-demister, 6-rear flue gas reheater, 7-steam and flue gas heat exchanger, 8-chimney, 9-cooling tower, 10-desalting water tank, 701-end plate, 702-middle partition plate, 703-heat exchange tube, 704-flange plate, 705-arc-shaped end socket, 706-sealing plate, 707-saturated steam inlet flange, 708-condensed water outlet pipe, 709-sealing ring, 710-partition plate, 711-partition plate body, 712-air guide groove, 713-diffusion cambered surface and 714-arc-shaped bulge.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not intended to be limiting.
Examples. The five-element heat exchange system for saving energy, reducing emission and eliminating white of the flue gas is shown in fig. 1 to 5, and comprises a front flue gas cooler 1, a water and flue gas heat exchanger 2, a desulfurizing tower 3, a condenser 4, a demister 5, a rear flue gas reheater 6, a steam and flue gas heat exchanger 7 and a chimney 8 which are connected in sequence; the condenser 4 is connected with a cooling tower 9 through a circulating pipeline; the front flue gas cooler 1 and the rear flue gas reheater 6 are connected through a circulating pipeline.
The water and flue gas heat exchanger 2 is connected with a desalting water tank 10 through a circulating pipeline.
The steam and flue gas heat exchanger 7 comprises two end plates 701 which are arranged in parallel, a plurality of middle partition plates 702 are uniformly distributed between the two end plates 701, a plurality of heat exchange tubes 703 which are uniformly distributed are arranged on the middle partition plates 702, and two ends of each heat exchange tube 703 are fixed on the end plates 701; the outer wall surface of the end plate 701 is provided with a flange 704, the flange 704 is provided with an arc-shaped sealing head 705, and the upper end and the lower end of the arc-shaped sealing head 705 are provided with sealing plates 706; a saturated steam inlet flange 707 is arranged on the arc-shaped end enclosure 705 at one end, and a condensed water outlet pipe 708 is arranged on the arc-shaped end enclosure 705 at the other end; a seal 709 is also provided between the flange 704 and the end plate 701.
A plurality of partition plates 710 are disposed horizontally above each other between adjacent ones of the partition plates 702 and between the partition plates 702 and the end plates 701.
The partition plate 710 includes a partition plate body 711, a plurality of air guide grooves 712 with tapered cross sections are formed in the upper end surface and the lower end surface of the partition plate body 711, a diffusion cambered surface 713 is formed between the upper end of the inner wall surface of the air guide groove 712 and the end surface of the partition plate body 711, and a plurality of arc-shaped protrusions 714 are formed in the bottom surface of the air guide groove 712.
The upper and lower end surfaces of the partition plate body 711 are also provided with heat insulation coatings.
A plurality of steam and flue gas heat exchangers can be mutually overlapped and assembled together. The upper end and the lower end of the front side and the rear side of the end plate are respectively provided with a first support steel and a second support steel, and I-steel is respectively arranged at the two ends between the first support steel and the second support steel; the lower end face of the second support steel is provided with a plurality of uniformly arranged dovetail grooves; the upper surface of the first support steel is provided with a dovetail boss corresponding to the dovetail groove. One steam and smoke heat exchanger is fixed at the bottom of a flue, the other steam and smoke heat exchanger is lifted, and the positions of the steam and smoke heat exchanger are adjusted, so that the dovetail groove is matched with the dovetail boss, namely, the positioning of the heat exchanger module is finished, and the installation accuracy is improved.
And a front flue gas cooler for recovering low-temperature flue gas waste heat. The front flue gas cooler is a shell-and-tube heat exchanger, the inner flow medium in the shell side is flue gas, and the medium in the tube side is intermediate medium water; the rear flue gas reheater is used for removing white of flue gas, the rear flue gas reheater is a shell-and-tube heat exchanger, the inner flow medium in the shell side is flue gas, and the tube side medium is intermediate medium water.
And (3) a condenser: the shell-and-tube type heater has the advantages that the shell side inner flow medium is flue gas, the tube side inner flow medium is circulating cooling water, the circulating cooling water is heated by utilizing flue gas waste heat, and the flue gas temperature is reduced.
Demister: a device for removing larger particle water molecule droplets in flue gas by using a mechanical centrifugal principle can be a folded plate type demister.
Steam and flue gas heat exchanger: in the shell-and-tube heat exchanger, a shell side inner flow medium is flue gas, an inlet pipe side medium is low-pressure saturated or supersaturated steam, an outlet pipe side medium is saturated condensed water, and the flue gas is heated by utilizing vaporization latent heat of the steam.
The water and flue gas heat exchanger is a shell-and-tube heat exchanger, the flue gas is taken as an inner flow medium in the shell side, the demineralized water is taken as an inner flow medium in the tube side, and the demineralized water is heated by utilizing flue gas waste heat to recover flue gas heat. The circulating pipeline between the water and flue gas heat exchanger and the demineralized water tank comprises a cold demineralized water pipe and a hot demineralized water pipe, and two ends of the cold demineralized water pipe are respectively connected with the heat exchange pipe inlet of the water and flue gas heat exchanger and the demineralized water tank outlet; the two ends of the hot demineralized water pipe are respectively connected with the outlet of the heat exchange pipe of the water-smoke heat exchanger and the inlet of the demineralized water box.
The circulating pipeline between the condenser and the cooling tower comprises two pipelines, one is a high-temperature circulating pipe and the other is a low-temperature circulating pipe. The inlet of the heat exchange tube of the condenser is low-temperature water, and the outlet of the heat exchange tube of the condenser is high-temperature water.
The saturated steam flows in from the saturated steam inlet flange, and the condensed water flows out from the condensed water outlet pipe.
The wind guide groove of the conical structure refers to a top view of the wind guide groove with the conical structure.
The circulating pipeline between the front flue gas cooler and the rear flue gas reheater comprises a high-temperature circulating water pipe and a low-temperature circulating water pipe, and a circulating pump is arranged on the low-temperature circulating water pipe. The water inlet of the heat exchange tube of the front flue gas cooler is connected with the low-temperature circulating water tube, and the water outlet of the heat exchange tube of the rear flue gas reheater is connected with the low-temperature circulating water tube; and two ends of the high-temperature circulating water pipe are respectively connected with a water outlet of a heat exchange pipe of the front flue gas cooler and a water inlet of a heat exchange pipe of the rear flue gas reheater.
The working process of the invention comprises the following steps: the high-temperature flue gas at 140 ℃ firstly passes through a front flue gas cooler from the shell side, and the medium at the heating pipe side is water, so that the temperature of the flue gas is reduced to 115 ℃; the cooled flue gas passes through the shell side of the water-flue gas heat exchanger, the water-flue gas heat exchanger is a waste heat recovery heat exchanger, namely, the medium at the tube side of the water-flue gas heat exchanger is desalted water, the temperature of the desalted water is increased, and the temperature of the flue gas is continuously reduced to 90 ℃; the flue gas subjected to the twice cooling enters the desulfurizing tower, compared with the original high-temperature flue gas, the flue gas temperature is reduced, the volume flow is reduced, the desulfurizing effect of the desulfurizing tower can be improved, the water consumption of the desulfurizing tower is reduced, the flue gas temperature at the outlet of the desulfurizing tower is reduced, the primary condensation effect is realized, and the flue gas temperature is reduced to 50 ℃; the desulfurized saturated wet flue gas sequentially enters a condenser and a demister. The saturated wet flue gas is cooled by circulating cooling water at the pipe side in a condenser, the temperature is reduced to 45 ℃, and condensed water is separated out; the flue gas condensation water simultaneously takes away part of dust, NOx and SOx in the flue gas, so that the emission of pollutants such as dust/NOx/SOx can be further reduced. The liquid condensation water particles with larger diameter in the flue gas are collected by a demister, and can be used as spray water of a desulfurizing tower for recycling after preliminary treatment; the flue gas after condensation and demisting enters a rear flue gas reheater, the flue gas is heated by intermediate medium water (hot water) at the side of a pipe, and the temperature of the flue gas is increased to 70 ℃; the intermediate medium water returns to the front smoke cooler through the circulating pump after being cooled, and the intermediate medium water is circulated and reciprocated; and the primarily heated flue gas enters a steam and flue gas heat exchanger, the steam further heats the flue gas to 80 ℃, and the flue gas is discharged from a chimney after the flue gas meets the required temperature for white plume treatment.
Claims (1)
1. The utility model provides a flue gas energy saving emission reduction disappears and duplicate heat transfer system which characterized in that: the flue gas desulfurization device comprises a front flue gas cooler (1), a water and flue gas heat exchanger (2), a desulfurizing tower (3), a condenser (4), a demister (5), a rear flue gas reheater (6), a steam and flue gas heat exchanger (7) and a chimney (8) which are connected in sequence; the condenser (4) is connected with a cooling tower (9) through a circulating pipeline; the front flue gas cooler (1) and the rear flue gas reheater (6) are connected through a circulating pipeline; the water and flue gas heat exchanger (2) is connected with a desalting water tank (10) through a circulating pipeline; the steam and flue gas heat exchanger (7) comprises two end plates (701) which are arranged in parallel, a plurality of middle partition plates (702) are uniformly distributed between the two end plates (701), a plurality of heat exchange tubes (703) which are uniformly distributed are arranged on the middle partition plates (702), and two ends of each heat exchange tube (703) are fixed on the end plates (701); the outer wall surface of the end plate (701) is provided with a flange plate (704), the flange plate (704) is provided with an arc-shaped sealing head (705), and the upper end and the lower end of the arc-shaped sealing head (705) are provided with sealing plates (706); a saturated steam inlet flange (707) is arranged on the arc-shaped sealing head (705) at one end, and a condensed water outlet pipe (708) is arranged on the arc-shaped sealing head (705) at the other end; a sealing ring (709) is further arranged between the flange plate (704) and the end plate (701); a plurality of partition plates (710) which are arranged horizontally up and down are also arranged between the adjacent partition plates (702) and between the partition plates (702) and the end plates (701); the partition plate (710) comprises a partition plate body (711), wherein a plurality of air guide grooves (712) with conical sections are formed in the upper end surface and the lower end surface of the partition plate body (711), a diffusion cambered surface (713) is arranged between the upper end of the inner wall surface of the air guide groove (712) and the end surface of the partition plate body (711), and a plurality of arc-shaped bulges (714) are formed in the bottom surface of the air guide groove (712); the upper end face and the lower end face of the partition plate body (711) are also provided with heat insulation coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128187.8A CN109099451B (en) | 2018-09-27 | 2018-09-27 | Energy-saving emission-reducing white-eliminating five-element heat exchange system for flue gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128187.8A CN109099451B (en) | 2018-09-27 | 2018-09-27 | Energy-saving emission-reducing white-eliminating five-element heat exchange system for flue gas |
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| Publication Number | Publication Date |
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| CN109099451A CN109099451A (en) | 2018-12-28 |
| CN109099451B true CN109099451B (en) | 2023-07-25 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827449B (en) * | 2019-01-24 | 2020-05-19 | 浙江横店热电有限公司 | High-precision flue gas whitening equipment with high heat conduction efficiency |
| CN110631044A (en) * | 2019-10-14 | 2019-12-31 | 西安交通大学 | Flue gas condensation heat exchanger of profile modeling flue gas runner structure |
| CN111068453A (en) * | 2019-12-27 | 2020-04-28 | 广州智光节能有限公司 | Flue gas whitening system and flue gas whitening method |
| CN111911947A (en) * | 2020-08-21 | 2020-11-10 | 邯郸学院 | Flue gas dehumidification system |
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