CN110940203B - Smoke-discharging heat exchanger for power plant - Google Patents

Smoke-discharging heat exchanger for power plant Download PDF

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Publication number
CN110940203B
CN110940203B CN201911220115.0A CN201911220115A CN110940203B CN 110940203 B CN110940203 B CN 110940203B CN 201911220115 A CN201911220115 A CN 201911220115A CN 110940203 B CN110940203 B CN 110940203B
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China
Prior art keywords
heat exchange
plate
exchange plate
shell
flue gas
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CN201911220115.0A
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CN110940203A (en
Inventor
李玮
倪培林
王永才
张明朝
付海
孙景福
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Datang Dongying Power Generation Co Ltd
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Datang Dongying Power Generation Co Ltd
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Publication of CN110940203A publication Critical patent/CN110940203A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28CHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00Other direct-contact heat-exchange apparatus
    • F28C3/06Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D47/00Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • B01D47/028Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by directing the gas through a wetted wire mesh or a perforated plate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456Removing acid components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/18Absorbing units; Liquid distributors therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/01Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Chimneys And Flues (AREA)

Abstract

The invention discloses a smoke-discharging heat exchanger for a power plant, comprising: a housing; a first separator; a second separator; a first baffle plate; a second baffle plate; the heat exchanger comprises a box body, wherein a primary heat exchange plate, a middle-grade heat exchange plate and a high-grade heat exchange plate are fixedly mounted at the bottom of the box body in sequence through bolts, a water tank is arranged at the center of the upper surface of the box body, and water through holes are uniformly formed in the bottom of the box body; the primary heat exchange plate, the middle heat exchange plate and the high heat exchange plate are inserted into the shell through the through holes and are positioned between the first partition plate and the second partition plate.

Description

Smoke-discharging heat exchanger for power plant
Technical Field
The invention relates to the technical field of smoke discharge of power plants, in particular to a smoke discharge heat exchanger for a power plant.
Background
A thermal power plant, referred to as a thermal power plant for short, is a plant that produces electric energy using a combustible (e.g., coal) as a fuel; the basic production process is as follows: when the fuel is burnt, water is heated to generate steam, chemical energy of the fuel is converted into heat energy, the steam pressure pushes a steam turbine to rotate, the heat energy is converted into mechanical energy, and then the steam turbine drives a generator to rotate, so that the mechanical energy is converted into electric energy.
The power plant can produce a large amount of flue gases when using thermal power to have a large amount of heats in the flue gas, in order to avoid thermal waste, discharge after the heat conversion in the flue gas again, consequently just need use heat transfer device that discharges fume.
And the flue gas that produces in the thermal power factory also contains a large amount of sulfides and dust, in order to avoid the flue gas polluted environment, need earlier to discharge after removing dust and purification treatment to the flue gas again.
Therefore, before the flue gas of the thermal power plant is discharged, not only heat exchange treatment but also dust removal and purification treatment are required, so that the procedures of flue gas discharge are increased, and therefore, a device convenient for flue gas heat exchange and dust removal and purification is required.
Disclosure of Invention
The present invention aims to provide a flue gas heat exchanger for a power plant to solve the problems set forth in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a flue gas heat exchanger for a power plant comprising: the air inlet pipe is inserted in the center of the bottom of one side of the shell; the surface of the first clapboard is uniformly provided with first through holes; the surface of the second clapboard is uniformly provided with second through holes; a first baffle plate; the surface of the second baffle plate is provided with a third through hole; the heat exchanger comprises a box body, wherein a primary heat exchange plate, a middle-grade heat exchange plate and a high-grade heat exchange plate are fixedly mounted at the bottom of the box body in sequence through bolts, a water tank is arranged at the center of the upper surface of the box body, and water through holes are uniformly formed in the bottom of the box body; the first baffle plate is fixedly arranged on one side, close to the through-insertion hole, of the top of the inner wall of the shell through bolts, the second baffle plate is fixedly arranged on the other side, close to the through-insertion hole, of the top of the inner wall of the shell through bolts, the first baffle plate is fixedly arranged between the bottom of the inner wall of the shell and the bottom of the first baffle plate through bolts, a smoke inlet cavity is formed among the inner wall of the shell, the first baffle plate and the first baffle plate, the second baffle plate is fixedly arranged between the bottom of the inner wall of the shell and the bottom of the second baffle plate through bolts, and a smoke exhaust cavity is formed among the inner wall of the shell, the second baffle plate and the second baffle plate; the primary heat exchange plate, the middle heat exchange plate and the high-grade heat exchange plate are inserted into the shell through the through holes, and the primary heat exchange plate, the middle heat exchange plate and the high-grade heat exchange plate are located between the first partition plate and the second partition plate.
Wherein, a smoke outlet is evenly arranged on one side of the top of the shell, and an exhaust fan is fixedly arranged in the smoke outlet through a bolt.
Wherein, the center department of casing bottom has the drain pipe through bolt fixed mounting, the drain pipe is whole to be the halfpace column structure, just the bottom cross sectional dimension of drain pipe is less than top cross sectional dimension.
The water draining pipe is fixedly arranged at the bottom of the shell in a surrounding mode through bolts.
The first baffle plate is fixedly arranged between the top of the inner side of the first baffle plate and the top of the inner side of the second baffle plate through bolts, and the cross section of the first filter screen plate is the same as that of the second filter screen plate.
A transition cavity is formed between the first filter screen plate and the second filter screen plate, and the third through hole penetrates through the transition cavity and the smoke exhaust cavity.
The primary heat exchange plate is made of low-density sponge, the middle-grade heat exchange plate is made of medium-density sponge, and the high-grade heat exchange plate is made of high-density sponge.
The water through holes are arranged in three rows, and the three rows of water through holes are respectively positioned right above the primary heat exchange plate, the middle-stage heat exchange plate and the high-stage heat exchange plate.
Compared with the prior art, the invention has the beneficial effects that:
the invention inserts a primary heat exchange plate, a middle heat exchange plate and a high-grade heat exchange plate into a shell through the through holes, then water is injected into the water tank, then the water is respectively guided into the primary heat exchange plate, the middle heat exchange plate and the high-grade heat exchange plate through the water through holes, then the primary heat exchange plate, the middle heat exchange plate and the high-grade heat exchange plate respectively adsorb a certain amount of water, then the flue gas generated by a power plant is conveyed into a flue gas inlet cavity through an air inlet pipe, an exhaust fan is simultaneously opened, the exhaust fan generates negative pressure in the flue gas outlet cavity, then the flue gas in the flue gas inlet cavity enters between a first partition plate and a second partition plate through a first through hole, the flue gas sequentially passes through the primary heat exchange plate, the middle heat exchange plate and the high-grade heat exchange plate, the moisture in the primary heat exchange plate, the middle heat exchange plate and the high-grade heat exchange plate exchanges heat with the flue gas, and simultaneously sulfides contained in the flue gas are dissolved in the water, and the granular dust contained in the flue gas is filtered in sequence through the primary heat exchange plate, the middle-stage heat exchange plate and the high-stage heat exchange plate, then the flue gas after heat exchange enters the smoke exhaust cavity through the second through hole and is exhausted through the exhaust fan, and the moisture in the primary heat exchange plate, the middle-stage heat exchange plate and the high-stage heat exchange plate continuously sinks under the action of gravity, finally the flue gas enters the water discharge pipe through the first filter screen plate and the second filter screen plate, and the water after heat exchange is discharged through the water discharge pipe, so that the heat exchange treatment can be carried out on the flue gas, the granular dust and sulfides in the flue gas can be removed, the environment pollution in the air discharged by the flue gas is avoided, and the emission of the flue gas is facilitated.
Drawings
FIG. 1 is a schematic overall front view of the present invention;
FIG. 2 is a schematic view of the overall front cross-sectional structure of the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic top view of the present invention in an open state;
FIG. 5 is a side view of the heat exchange plate of the present invention;
FIG. 6 is a schematic front view of a heat exchange plate according to the present invention;
FIG. 7 is a schematic front view of a first partition plate according to the present invention;
FIG. 8 is a schematic front view of a second separator according to the present invention.
In FIGS. 1-8: 10-a housing; 11-a through hole; 12-an air inlet pipe; 13-an exhaust fan; 14-a drain pipe; 15-a first filter screen plate; 16-a second filter screen plate; 20-a first separator; 21-a first via; 22-a smoke inlet cavity; 30-a second separator; 31-a second via; 32-a smoke exhaust cavity; 40-a first baffle plate; 50-a second baffle plate; 51-a third via; 60-a box body; 61-primary heat exchange plates; 62-intermediate heat exchange plates; 63-advanced heat exchange plates; 64-a water tank; 65-water hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides a technical solution: a flue gas heat exchanger for a power plant comprising: the baffle plate comprises a shell 10, a first baffle plate 20, a second baffle plate 30, a first baffle plate 40, a second baffle plate 50 and a box body 60.
A through hole 11 is formed in the center of the top of the shell 10, the width of the through hole 11 is the same as the distance between the first partition plate 20 and the second partition plate 30, and the length of the through hole 11 is the same as the width of the inner wall of the shell 10; and the cross-sectional dimension of box 60 is less than the size of interlude hole 11, can insert inside casing 10 with elementary heat transfer board 61, middle level heat transfer board 62 and senior heat transfer board 63 through interlude hole 11, simultaneously through the position of interlude hole 11 restriction box 60, prevent that box 60 from entering into inside casing 10, made things convenient for box 60 and elementary heat transfer board 61 like this, middle level heat transfer board 62 and senior heat transfer board 63's installation and dismantlement, back when the inside one end that uses of casing 10 simultaneously, can take out box 60 and elementary heat transfer board 61, middle level heat transfer board 62 and senior heat transfer board 63, then clear up casing 10 inside through interlude hole 11.
Wherein, the center department of casing 10 one side bottom is pegged graft and is had intake pipe 12, with intake pipe 12 and the delivery pipe fixed connection of power plant flue gas to carry the power plant flue gas in this heat exchanger.
Wherein, the outlet flue has evenly been seted up to one side at casing 10 top to the outlet flue is inside to have exhaust fan 13 through bolt fixed mounting, can take out the inside air in chamber 32 of discharging fume through exhaust fan 13, makes the chamber 32 of discharging fume produce the negative pressure, thereby conveniently advances the inside flue gas in chamber 22 and loops through elementary heat transfer board 61, middle-level heat transfer board 62 and senior heat transfer board 63 and flow.
Wherein, first through-hole 21 has evenly been seted up on first baffle 20 surface, can carry the inside flue gas of advancing smoke chamber 22 between first baffle 20 and the second baffle 30 through first through-hole 21.
Second through holes 31 are uniformly formed in the surface of the second partition plate 30, and smoke between the first partition plate 20 and the second partition plate 30 can be conveyed into the smoke exhaust cavity 32 through the second through holes 31.
The first partition plate 20 is fixedly installed on the top of the inner wall of the shell 10 close to one side of the through hole 11 through bolts, the second partition plate 30 is fixedly installed on the top of the inner wall of the shell 10 close to the other side of the through hole 11 through bolts, the first baffle plate 40 is fixedly installed between the bottom of the inner wall of the shell 10 and the bottom of the first partition plate 20 through bolts, a smoke inlet cavity 22 is formed between the inner wall of the shell 10 and the first partition plate 20 and between the inner wall of the shell 10 and the bottom of the second partition plate 30 through bolts, the second baffle plate 50 is fixedly installed between the bottom of the inner wall of the shell 10 and the second partition plate 30 and between the inner wall of the shell 10 and the second baffle plate 50, a smoke exhaust cavity 32 is formed between the inner wall of the shell 10 and the second partition plate 30.
The bottom of the box body 60 is fixedly provided with a primary heat exchange plate 61, a middle-grade heat exchange plate 62 and a high-grade heat exchange plate 63 in sequence through bolts, the center of the upper surface of the box body 60 is provided with a water tank 64, and the bottom of the box body 60 is uniformly provided with water through holes 65; the primary heat exchange plate 61, the intermediate heat exchange plate 62 and the high heat exchange plate 63 are inserted into the shell 10 through the insertion holes 11, and the primary heat exchange plate 61, the intermediate heat exchange plate 62 and the high heat exchange plate 63 are located between the first partition plate 20 and the second partition plate 30.
Wherein, when using, add clean water in to basin 64, then clean water permeates elementary heat transfer board 61, in medium level heat transfer board 62 and the senior heat transfer board 63 through limbers 65, so the power plant flue gas passes through elementary heat transfer board 61, when medium level heat transfer board 62 and senior heat transfer board 63, can carry out the heat transfer through elementary heat transfer board 61, the clean water flue gas that contains in medium level heat transfer board 62 and the senior heat transfer board 63 handles, and the sulphide that contains in the flue gas is dissolved in clean aquatic, simultaneously the graininess dust in the flue gas is filtered by elementary heat transfer board 61, medium level heat transfer board 62 and senior heat transfer board 63, so not only can avoid thermal loss, and can carry out purification treatment to the flue gas, sulphide and graininess dust pollution environment in the flue gas have been avoided.
Wherein, the center department of casing 10 bottom has drain pipe 14 through bolt fixed mounting, drain pipe 14 wholly is halfpace column structure, just the bottom cross sectional dimension of drain pipe 14 is less than top cross sectional dimension.
A drain hole is formed in the center of the bottom of the casing 10, a second filter screen 16 is fixedly mounted inside the drain hole through bolts, and the drain pipe 14 is fixedly mounted at the bottom of the casing 10 around the drain hole through bolts.
Further, water contained in the primary heat exchange plate 61, the intermediate heat exchange plate 62 and the high heat exchange plate 63 continuously sinks under the action of gravity, then the water subjected to heat exchange sequentially passes through the first filter screen plate 15 and the second filter screen plate 16 to enter the drain pipe 14, then the water subjected to heat exchange is discharged through the drain pipe 14, and then the water subjected to heat exchange is treated again.
A first filter screen plate 15 is fixedly installed between the top of the inner side of the first baffle plate 40 and the top of the inner side of the second baffle plate 50 through bolts, and the cross-sectional size of the first filter screen plate 15 is the same as that of the second filter screen plate 16.
The surface of the second baffle 50 is provided with a third through hole 51, a transition cavity is formed between the first filter screen plate 15 and the second filter screen plate 16, and the third through hole 51 penetrates through the transition cavity and the smoke discharge cavity 32.
Further, after the flue gas permeates into the transition cavity between the first filter screen plate 15 and the second filter screen plate 16 through the primary heat exchange plate 61, the middle heat exchange plate 62 and the high heat exchange plate 63 along with the heat exchange water, the flue gas in the transition cavity enters the smoke discharge cavity 32 through the third through hole 51 due to the negative pressure effect in the smoke discharge cavity 32, and then is discharged through the exhaust fan 13.
The primary heat exchange plate 61 is made of low-density sponge, the middle-grade heat exchange plate 62 is made of medium-density sponge, and the high-grade heat exchange plate 63 is made of high-density sponge.
The sponge has a certain adsorption effect, the low-density sponge is adopted to prepare the primary heat exchange plate 61, the medium-density sponge is adopted to prepare the medium-level heat exchange plate 62, and the high-density sponge is adopted to prepare the high-level heat exchange plate 63, so that moisture can be adsorbed on the primary heat exchange plate 61, the medium-level heat exchange plate 62 and the high-level heat exchange plate 63, the moisture adsorbed by the primary heat exchange plate 61, the medium-level heat exchange plate 62 and the high-level heat exchange plate 63 is used for carrying out heat exchange treatment on the flue gas, and sulfides contained in the flue gas can be dissolved in the moisture adsorbed by the primary heat exchange plate 61, the medium-level heat exchange plate 62 and the high-level heat exchange plate 63.
Wherein, the limber holes 65 are provided with three rows, and the three rows of limber holes 65 are respectively positioned right above the primary heat exchange plate 61, the middle-stage heat exchange plate 62 and the high-stage heat exchange plate 63.
When the water-saving heat exchange plate is used, water in the water tank 64 flows downwards through different water through holes 65, the water penetrates into the primary heat exchange plate 61 through the water through holes 65 above the primary heat exchange plate 61, the water penetrates into the intermediate heat exchange plate 62 through the water through holes 65 above the intermediate heat exchange plate 62, and the water penetrates into the high-grade heat exchange plate 63 through the water through holes 65 above the high-grade heat exchange plate 63.
The working principle is as follows: when the heat exchanger is used, the primary heat exchange plate 61, the middle heat exchange plate 62 and the high heat exchange plate 63 are inserted into the shell 10 through the through-insertion holes 11, the primary heat exchange plate 61, the middle heat exchange plate 62 and the high heat exchange plate 63 are positioned between the first partition plate 20 and the second partition plate 30, water is injected into the water tank 64, then the water is respectively guided into the primary heat exchange plate 61, the middle heat exchange plate 62 and the high heat exchange plate 63 through the water through holes 65, then the primary heat exchange plate 61, the middle heat exchange plate 62 and the high heat exchange plate 63 respectively adsorb a certain amount of water, then flue gas generated by a power plant is conveyed into the flue gas inlet cavity 22 through the air inlet pipe 12, the exhaust fan 13 is simultaneously turned on, negative pressure is generated in the flue gas outlet cavity 32 by the exhaust fan 13, then the flue gas in the flue gas cavity 22 enters between the first partition plate 20 and the second partition plate 30 through the first through-hole 21, and the primary heat exchange plate 61, and the flue gas sequentially passes through the primary heat exchange plate 61, the middle heat exchange plate 62 and the second partition plate 63, The middle-stage heat exchange plate 62 and the high-stage heat exchange plate 63 perform heat exchange treatment on the flue gas through moisture in the primary heat exchange plate 61, the middle-stage heat exchange plate 62 and the high-stage heat exchange plate 63, sulfides contained in the flue gas are dissolved in water, granular dust contained in the flue gas is sequentially filtered through the primary heat exchange plate 61, the middle-stage heat exchange plate 62 and the high-stage heat exchange plate 63, then the flue gas after heat exchange enters the smoke exhaust cavity 32 through the second through hole 31 and is exhausted through the exhaust fan 13, moisture in the primary heat exchange plate 61, the middle-stage heat exchange plate 62 and the high-stage heat exchange plate 63 continuously sinks under the action of gravity, finally the flue gas enters the drain pipe 14 through the first filter screen plate 15 and the second filter screen plate 16, and the water after heat exchange is exhausted through the drain pipe 14, so that not only the heat exchange treatment can be performed on the flue gas, but also the dust and the sulfides in the flue gas can be removed, the environmental pollution in the air discharged by the flue gas is avoided, thereby facilitating the discharge of the flue gas.
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.
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 (7)

1. A flue gas heat exchanger for a power plant, comprising:
the air inlet pipe comprises a shell (10), wherein a through hole (11) is formed in the center of the top of the shell (10), and an air inlet pipe (12) is inserted in the center of the bottom of one side of the shell (10);
the surface of the first clapboard (20) is uniformly provided with first through holes (21);
the surface of the second clapboard (30) is uniformly provided with second through holes (31);
a first baffle plate (40);
the surface of the second baffle plate (50) is provided with a third through hole (51);
the heat exchanger comprises a box body (60), wherein a primary heat exchange plate (61), a middle-grade heat exchange plate (62) and a high-grade heat exchange plate (63) are fixedly mounted at the bottom of the box body (60) in sequence through bolts, the primary heat exchange plate (61) is made of low-density sponge, the middle-grade heat exchange plate (62) is made of middle-density sponge, the high-grade heat exchange plate (63) is made of high-density sponge, a water tank (64) is formed in the center of the upper surface of the box body (60), and water through holes (65) are uniformly formed in the bottom of the box body (60);
wherein the first clapboard (20) is fixedly arranged on one side of the top of the inner wall of the shell (10) close to the through-insertion hole (11) through a bolt, the second clapboard (30) is fixedly arranged at the other side of the top of the inner wall of the shell (10) close to the through-insertion hole (11) through a bolt, the first baffle plate (40) is fixedly arranged between the bottom of the inner wall of the shell (10) and the bottom of the first clapboard (20) through bolts, a smoke inlet cavity (22) is formed between the inner wall of the shell (10) and the first clapboard (20) and the first baffle plate (40), the second baffle plate (50) is fixedly arranged between the bottom of the inner wall of the shell (10) and the bottom of the second partition plate (30) through bolts, a smoke discharge cavity (32) is formed between the inner wall of the shell (10) and the second partition plate (30) and the second baffle plate (50);
the primary heat exchange plate (61), the intermediate heat exchange plate (62) and the high-grade heat exchange plate (63) are inserted into the shell (10) through the through holes (11), and the primary heat exchange plate (61), the intermediate heat exchange plate (62) and the high-grade heat exchange plate (63) are located between the first partition plate (20) and the second partition plate (30).
2. A flue gas heat exchanger for a power plant according to claim 1, comprising:
a smoke outlet is uniformly formed in one side of the top of the shell (10), and an exhaust fan (13) is fixedly mounted in the smoke outlet through a bolt.
3. A flue gas heat exchanger for a power plant according to claim 2, comprising:
the center department of casing (10) bottom has drain pipe (14) through bolt fixed mounting, drain pipe (14) wholly are halfpace column structure, just the bottom cross sectional dimension of drain pipe (14) is less than top cross sectional dimension.
4. A flue gas heat exchanger for a power plant according to claim 3, comprising:
a drain hole is formed in the center of the bottom of the shell (10), a second filter screen plate (16) is fixedly mounted inside the drain hole through bolts, and the drain pipe (14) is fixedly mounted at the bottom of the shell (10) in a mode of surrounding the drain hole through bolts.
5. A flue gas heat exchanger for a power plant according to claim 4, comprising:
a first filter screen plate (15) is fixedly installed between the top of the inner side of the first baffle plate (40) and the top of the inner side of the second baffle plate (50) through bolts, and the cross section size of the first filter screen plate (15) is the same as that of the second filter screen plate (16).
6. A flue gas heat exchanger for a power plant according to claim 5, comprising:
a transition cavity is formed between the first filter screen plate (15) and the second filter screen plate (16), and the third through hole (51) penetrates through the transition cavity and the smoke exhaust cavity (32).
7. A flue gas heat exchanger for a power plant according to claim 6, comprising:
the three rows of the water through holes (65) are formed, and the three rows of the water through holes (65) are respectively positioned right above the primary heat exchange plate (61), the middle-stage heat exchange plate (62) and the high-stage heat exchange plate (63).
CN201911220115.0A 2019-12-03 2019-12-03 Smoke-discharging heat exchanger for power plant Active CN110940203B (en)

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CN110940203A CN110940203A (en) 2020-03-31
CN110940203B true CN110940203B (en) 2021-07-27

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