CN217685106U - Device for step heating of flue gas - Google Patents
Device for step heating of flue gas Download PDFInfo
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- CN217685106U CN217685106U CN202221829172.6U CN202221829172U CN217685106U CN 217685106 U CN217685106 U CN 217685106U CN 202221829172 U CN202221829172 U CN 202221829172U CN 217685106 U CN217685106 U CN 217685106U
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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
Abstract
The utility model discloses a device for flue gas step heating, which comprises a heat exchanger shell, wherein a plurality of division plates are fixedly connected with the inner wall of the top end of the heat exchanger shell, at least one liquid inlet part is arranged at the top end of the heat exchanger shell, a first outlet and a second outlet are also arranged at the top end of the heat exchanger shell, and the liquid inlet part is communicated with the first outlet and the second outlet; and the smoke source is arranged on one side of the heat exchanger shell and is used for providing and driving smoke to move. The utility model discloses can realize setting up the mode of at least one import and a plurality of export in a heat exchanger, realize getting heat to different flue gas temperature sections, produce the high temperature working medium of different temperatures. Therefore, the heat of the flue gas in the high-temperature section can be taken out, the sensible heat and the latent heat in the low-temperature section in the flue gas can also be taken out, and the classification utilization of the heated fluid is realized.
Description
Technical Field
The utility model relates to a technical field is handled to the flue gas, especially relates to a device that is used for flue gas step to get heat.
Background
Thermal power generation generally refers to the generation of electricity by using heat energy generated by burning coal, petroleum, natural gas and other fuels to drive a generator. China is a country with thermal power generation as a main part, and the produced electric energy accounts for about 60-70% of the total electric energy of China. However, thermal power generation can only convert about 50% of heat energy into electric energy, and a large amount of heat energy is dissipated to exhaust steam condensation at the cold end of a steam turbine system and exhaust smoke at the tail part of a boiler system. For example, the exhaust gas temperature of the coal-fired thermal power generating unit which is commonly used at present is generally maintained at 120-150 ℃, and the exhaust gas temperature of the gas-steam combined cycle is generally about 90 ℃. Because the flow of the flue gas is very large and can reach millions of cubic meters per hour, the waste heat of the flue gas also contains abundant heat, and the waste heat is directly discharged into the atmosphere, thereby wasting energy and polluting the environment. How to recover heat from low-temperature flue gas and utilize the heat has great significance for energy conservation and emission reduction.
The main components of the flue gas after passing through the waste heat boiler are nitrogen, oxygen, carbon dioxide and water vapor, generally, when the flue gas is reduced to be below the dew point temperature, the latent heat part in the flue gas can be released, and because the release amount of the latent heat is far greater than the sensible heat in the unit mass of the flue gas, the heat contained in the flue gas below the dew point temperature is more considerable.
At present, the heat of a high-temperature section in the flue gas is high in taste, and the utilization means is wide, but the flue gas temperature below the dew point temperature is too low, so that the quality of the heat of the flue gas is improved by a heat pump in the main utilization means at present, and the heat is used for heating. Based on the thought of waste heat utilization, the heat in the flue gas needs to be heated in a grading way, and the heat taken out is utilized in a grading way, so that the utilization rate of the heat in the flue gas is improved.
In addition, because many equipment have been arranged to the power plant's boiler afterbody, usable space is limited, need adopt compact heat exchanger just can realize the high efficiency in the little space and get heat, therefore the inside all-welded plate heat exchanger that has microchannel structure has wide application prospect in flue gas waste heat utilization field. Typically, the plate heat exchanger is provided with an inlet and an outlet. The low-temperature working medium enters from an inlet, absorbs the heat of the flue gas and flows out from an outlet to become high-temperature fluid. Based on the above principle, such a heat exchanger having an inlet and an outlet can only produce a fluid at one temperature. For the occasions needing the flue gas cascade utilization, the heat exchanger with the inlet and the outlet is difficult to meet the requirement. If two independent heat exchangers are adopted, two flue gas inlets and two flue gas outlets are arranged on the flue gas side, and according to the Bernoulli equation, the resistance loss of fluid at the inlets and the outlets is the main part of the whole flow resistance loss of the heat exchanger; in addition, the two independent heat exchangers occupy larger space, and are not beneficial to the installation of the tail heat exchanger of the waste heat boiler. Therefore, how to realize the step heat extraction of the flue gas under the condition of reducing the flow resistance of the flue gas, so that the same heat exchanger can produce high-temperature water with different temperatures, and further the utilization rate of the heat of the flue gas is improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device for flue gas step is got heat to solve the problem that above-mentioned prior art exists, can realize setting up the mode of a plurality of imports and exports in a heat exchanger, realized getting heat to different flue gas temperature sections, produce the high temperature working medium of different temperatures. Therefore, the heat of the flue gas at the high-temperature section can be taken out, the sensible heat and the latent heat at the low-temperature section in the flue gas can also be taken out, and the staged utilization of the heated fluid is realized.
In order to achieve the above object, the utility model provides a following scheme: the utility model provides a device for flue gas step heat extraction, which comprises,
the heat exchanger comprises a heat exchanger shell, wherein a plurality of partition plates are fixedly connected to the inner wall of the top end of the heat exchanger shell, at least one liquid inlet part is formed in the top end of the heat exchanger shell, a first outlet and a second outlet are further formed in the top end of the heat exchanger shell, and the liquid inlet part is communicated with the first outlet and the second outlet;
and the smoke source is arranged on one side of the heat exchanger shell and is used for providing and driving smoke to move.
Preferably, feed liquor portion quantity is one, feed liquor portion is first import or second import, first import or the second import with first export with the second export intercommunication.
Preferably, the inner wall of the top end of the heat exchanger shell is fixedly connected with two partition plates, a gap is formed between the two partition plates and the inner wall of the bottom end of the heat exchanger shell, the first inlet or the second inlet is located between the two partition plates, the first outlet is located on one side, close to the flue gas source, of the first inlet or the second inlet, the second outlet is located on one side, away from the flue gas source, of the first inlet or the second inlet, and the liquid outlet end of the first inlet or the second inlet is communicated with the first outlet and the second outlet through gaps.
Preferably, the inner wall of the top end of the heat exchanger shell is fixedly connected with two partition plates, a gap is formed between the two partition plates and the inner wall of the bottom end of the heat exchanger shell, the second outlet is located between the two partition plates, the first outlet is located on one side, close to the flue gas source, of the second outlet, the first inlet or the second inlet is located on one side, far away from the flue gas source, of the second outlet, and the liquid outlet end of the first inlet or the second inlet is communicated with the first outlet and the second outlet through the gap.
Preferably, the liquid inlet portion quantity is two, one the liquid inlet portion is first import or second import, another the liquid inlet portion is first import or second import, one the liquid inlet portion first import or the second import with first export intercommunication, another the liquid inlet portion first import or the second import with the second export intercommunication.
Preferably, a middle partition plate is fixedly connected in the heat exchanger shell, the middle partition plate divides the heat exchanger shell into a first heat exchange cavity and a second heat exchange cavity, the first heat exchange cavity is provided with the first inlet and the first outlet, the second heat exchange cavity is provided with the second inlet and the second outlet, and the first inlet and the second inlet are respectively located on two sides of the middle partition plate; the first heat exchange cavity and the second heat exchange cavity are respectively and fixedly connected with a partition plate, and the bottoms of the partition plates are respectively spaced from the bottoms of the first heat exchange cavity and the second heat exchange cavity.
The utility model discloses a following technological effect:
1. the heat exchanger is provided with the inlets and the outlets, so that heat taking of different flue gas temperature sections can be realized, high-temperature working media with different temperatures are generated, the arrangement can take out flue gas heat of the high-temperature section and sensible heat and latent heat of the low-temperature section in flue gas, and the staged utilization of heated fluid is realized.
2. After absorbing the waste heat in the flue gas, the heat exchanger can generate working media with different temperatures for users to use, for example, the high-temperature part with the temperature of more than 60 ℃ is used for directly heating the users. The low temperature below 60 ℃ is directly used for bathing or is input into a heat pump unit to improve the grade and then is used for heating.
3. The heat exchanger has realized the integrated design, when carrying out the cascade utilization to the flue gas for the current, two independent heat exchangers that adopt, this device has reduced flue gas flow resistance.
4. Because the heat exchanger is designed integrally, the space area is smaller.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic view of a configuration in which the first inlet is located at an intermediate position;
FIG. 2 is a schematic view of a first inlet at a side position;
FIG. 3 is a schematic structural view of a state that the first heat exchange chamber and the second heat exchange chamber are separated;
101-a first inlet, 102-a second inlet, 201-a first outlet, 202-a second outlet, 301-a flue gas source, 4-a heat exchanger shell, 5-a partition plate, 601-a first heat exchange cavity, 602-a second heat exchange cavity.
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 efforts all belong to the protection scope of the present invention.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1-3, the utility model discloses a device for flue gas step heating, which comprises a heat exchanger shell 4, a plurality of division plates 5 are fixedly connected on the inner wall of the top end of the heat exchanger shell 4, at least one liquid inlet part is arranged on the top end of the heat exchanger shell 4, a first outlet 201 and a second outlet 202 are also arranged on the top end of the heat exchanger shell 4, and the liquid inlet part is communicated with the first outlet 201 and the second outlet 202; and a smoke source 301 arranged on one side of the heat exchanger shell 4, wherein the smoke source 301 is used for providing and driving smoke to move.
The heat exchanger shell 4 is a full-welded plate heat exchanger, the flue gas source 301 is used for providing high-temperature flue gas and driving the flue gas to move towards the heat exchanger shell 4, and the plurality of partition plates 5 are matched to divide the interior of the heat exchanger shell 4 into different areas, so that the liquid inlet part, the first outlet 201 and the second outlet 202 are separated, a first working medium flows out from the first outlet 201, and a second working medium flows out from the second outlet 202.
Further, the low temperature medium is preferably, but not limited to, demineralized water.
In a further optimized scheme, the number of the liquid inlet portions is one, the liquid inlet portions are the first inlet 101 or the second inlet 102, and the first inlet 101 or the second inlet 102 is communicated with the first outlet 201 and the second outlet 202. When the number of the liquid inlet portions is one, the liquid inlet portions may be the first inlet 101 or the second inlet 102.
In embodiment 1, two partition plates 5 are fixedly connected to an inner wall of a top end of a heat exchanger housing 4, a gap is provided between the two partition plates 5 and an inner wall of a bottom end of the heat exchanger housing 4, a first inlet 101 or a second inlet 102 is located between the two partition plates 5, a first outlet 201 is located on a side of the first inlet 101 or the second inlet 102 close to a flue gas source 301, a second outlet 202 is located on a side of the first inlet 101 or the second inlet 102 far away from the flue gas source 301, and a liquid outlet end of the first inlet 101 or the second inlet 102 is communicated with the first outlet 201 and the second outlet 202 through the gap.
When only the first inlet 101 or the second inlet 102 exists at the top end of the heat exchanger shell 4, two partition plates 5 are fixedly connected inside the heat exchanger shell 4, the first inlet 101 or the second inlet 102 is located between the two partition plates 5, and meanwhile, a gap exists between the two partition plates 5 and the inner wall at the bottom end of the heat exchanger shell 4, so that the low-temperature working medium can enter the first outlet 201 and the second outlet 202 through the gap. Meanwhile, as the first outlet 201 is closer to the flue gas source 301, the part of the heat exchanger shell 4 with the first outlet 201 contacts the flue gas firstly, so that the first working medium led out from the first outlet 201 exchanges heat firstly, and then the second working medium led out from the second outlet 202 exchanges heat.
In embodiment 2, two partition plates 5 are fixedly connected to the inner wall of the top end of the heat exchanger housing 4, a gap is provided between the two partition plates 5 and the inner wall of the bottom end of the heat exchanger housing 4, the second outlet 202 is located between the two partition plates 5, the first outlet 201 is located on one side of the second outlet 202 close to the flue gas source 301, the first inlet 101 or the second inlet 102 is located on one side of the second outlet 202 far from the flue gas source 301, and the liquid outlet end of the first inlet 101 or the second inlet 102 is communicated with the first outlet 201 and the second outlet 202 through the gap.
When the heat exchanger shell 4 only has the first inlet 101 or the second inlet 102, the second outlet 202 is located between the two partition plates 5, the low-temperature working medium enters the second outlet 202 and the first outlet 201 from the gap, and similarly, the movement distance of the low-temperature working medium is prolonged by the existence of the partition plates 5, so that the low-temperature working medium can fully exchange heat, meanwhile, the first working medium flowing out from the first outlet 201 absorbs latent heat existing in flue gas in advance, the temperature of the first working medium is increased, and then the heat exchange is carried out with the high-temperature flue gas, so that the temperature is further increased, and the two heat exchange processes are matched, so that the temperature of the first working medium can be rapidly increased.
In a further optimization scheme, the number of the liquid inlet parts is two, one liquid inlet part is a first inlet 101 or a second inlet 102, the other liquid inlet part is a first inlet 101 or a second inlet 102, the first inlet 101 or the second inlet 102 of the one liquid inlet part is communicated with a first outlet 201, and the first inlet 101 or the second inlet 102 of the other liquid inlet part is communicated with a second outlet 202. When the number of the liquid inlet portions is two, the two liquid inlet portions are the first inlet 101 or the second inlet 102.
In embodiment 3, a middle partition plate is fixedly connected in the heat exchanger housing 4, the middle partition plate divides the heat exchanger housing 4 into a first heat exchange cavity 601 and a second heat exchange cavity 602, the first heat exchange cavity 601 is provided with a first inlet 101 and a first outlet 201, the second heat exchange cavity 602 is provided with a second inlet 102 and a second outlet 202, and the first inlet 101 and the second inlet 102 are respectively located at two sides of the middle partition plate; partition plates 5 are respectively and fixedly connected in the first heat exchange cavity 601 and the second heat exchange cavity 602, and a space exists between the bottom of each partition plate 5 and the bottom of each first heat exchange cavity 601 and the bottom of each second heat exchange cavity 602.
The division plate 5 located in the middle divides the interior of the heat exchanger shell 4 into a first heat exchange cavity 601 and a second heat exchange cavity 602, so that the first heat exchange cavity 601 and the second heat exchange cavity 602 are not interfered with each other, the first working medium and the second working medium are not influenced by the arrangement, and the output quantity of the first working medium and the output quantity of the second working medium can be controlled to be adjusted.
Furthermore, a heat insulation layer (not shown in the figure) is fixedly connected to the surface of the middle partition plate 5, and the existence of the heat insulation layer can reduce the influence of the first working medium in the first heat exchange cavity 601 on the second working medium in the second heat exchange cavity 602, so that the first working medium and the second working medium are prevented from exchanging heat, and the first working medium and the output temperature cannot meet the use requirement.
Further, according to actual needs, other heat exchange chambers may be additionally provided on the basis of the first heat exchange chamber 601 and the second heat exchange chamber 602, wherein fluids with different temperature gradients may flow out according to the number change of the heat exchange chambers, for example, four sets of heat exchange chambers may be provided, and four fluids with different temperatures may be generated.
A method for step heat extraction of flue gas is based on the following devices:
s1, conveying flue gas: the flue gas is driven over the outer surface of the heat exchanger. The flue gas is conveyed to the heat exchanger by a driving device (not shown in the figure), and the flue gas exchanges heat with the heat exchanger after passing through the surface of the heat exchanger.
S2, inputting a low-temperature working medium: and introducing a low-temperature medium into at least one liquid inlet part of the heat exchanger. And introducing a low-temperature working medium into at least one liquid inlet part on the heat exchanger, wherein the low-temperature working medium flows in the heat exchanger and exchanges heat with external smoke through the surface of the heat exchanger.
S3, outputting a first working medium and a second working medium: after heat exchange between the low-temperature working medium and the conveying flue gas, the first working medium is output from the first outlet 201, and the second working medium is output from the second outlet 202. After the heat exchange between the low-temperature working medium and the flue gas is completed, the first outlet 201 and the second outlet 202 are in different positions, so that the first working medium and the second working medium with different temperatures can be output through the first outlet 201 and the second outlet 202.
The first working medium with higher temperature can be used for direct heating, and the second working medium with relatively lower temperature can be used for bathing heating or can be input into a heat pump unit to improve the grade and then be continuously used for heating.
Further, fans (not shown) are disposed in the first outlet 201 and the second outlet 202. The fan provides power, so that the first working medium and the second working medium after heat exchange can be smoothly led out of the heat exchanger.
In embodiment 1, in steps S2 to S3, when there is one liquid inlet portion, the liquid inlet portion is a first inlet 101 or a second inlet 102, the low-temperature medium is introduced into the heat exchanger through the first inlet 101 or the second inlet 102, the first inlet 101 or the second inlet 102 is located between the first outlet 201 and the second outlet 202, a liquid outlet end of the first inlet 101 or the second inlet 102 is respectively communicated with a liquid inlet end of the first outlet 201 and a liquid inlet end of the second outlet 202, and the first outlet 201, the first inlet 101, and the second outlet 202 are sequentially arranged along a moving direction of the flue gas.
As shown in fig. 1, after entering the heat exchanger from the first inlet 101, the low-temperature working medium is divided into two paths in the flow direction, one path flows in a counter-flow manner with the flue gas conveying direction, and flows out from the first outlet 201 after exchanging heat with the flue gas, and the other path flows in a co-flow manner with the flue gas conveying direction, and flows out from the second outlet 202 after exchanging heat with the flue gas. Because the first working medium flowing out of the first outlet 201 exchanges heat with the flue gas firstly, the working medium flowing out of the first outlet 201 absorbs the heat of the high-temperature section in the flue gas, and can be directly used for heating. After the flue gas exchanges heat with the first working medium, the temperature of the flue gas is reduced, then the flue gas exchanges heat with the second working medium flowing out of the second outlet 202, the second working medium flowing out of the second outlet 202 absorbs heat of low temperature in the flue gas, and the temperature of the flue gas is reduced to be lower than the dew point temperature. And the second working medium can be output to the heat pump system to improve the grade and then be used for heating or bathing. Although the temperature of the second working medium flowing out of the second outlet 202 is lower, it can generate more heat due to the latent heat of the water vapor in the flue gas, so that the second working medium at the second outlet 202 has a relatively lower temperature, but has more heat than the first working medium at the first outlet 201.
In embodiment 2, in steps S2 to S3, when one liquid inlet portion is provided, the liquid inlet portion is a first inlet 101 or a second inlet 102, the low-temperature medium is introduced into the heat exchanger through the first inlet 101 or the second inlet 102, the second outlet 202 is located between the first outlet 201 and the first inlet 101 or the second inlet 102, the liquid outlet end of the first inlet 101 is respectively communicated with the liquid inlet end of the first outlet 201 and the liquid inlet end of the second outlet 202, and the first outlet 201, the second outlet 202, and the first inlet 101 are sequentially arranged along the moving direction of the flue gas.
As shown in fig. 2, the low-temperature working medium enters the heat exchanger from the first inlet 101, and is also divided into two paths, one path flows out from the first outlet 201, and the other path flows out from the second outlet 202. Because the positions of the first inlet 101, the first outlet 201 and the second outlet 202 are arranged, the working medium flow of the first medium discharged from the first outlet 201 is longer, and the first medium can exchange heat with the flue gas firstly, so that the first medium can absorb more heat, meanwhile, the first medium can utilize latent heat of a part of low-temperature section of the flue gas, namely the low-temperature medium firstly absorbs latent heat of the low-temperature section and then absorbs heat of the high-temperature section, and the arrangement has high heat utilization rate. The second working medium flowing out of the second outlet 202 only absorbs the latent heat and sensible heat of the low temperature section in the flue gas, and the temperature of the second working medium is relatively low, so that the second working medium can be used for heating after being used for raising the temperature of a heat pump system, or can be directly supplied to a bathing system.
In embodiment 3, in steps S2 to S3, when there are two liquid inlet portions, one liquid inlet portion is the first inlet 101 or the second inlet 102, the other liquid inlet portion is the first inlet 101 or the second inlet 102, the low-temperature medium is introduced into the heat exchanger through the first inlet 101 or the second inlet 102, the liquid outlet end of the one liquid inlet portion is separated from the liquid outlet end of the other liquid inlet portion, the liquid outlet end of the first inlet 101 or the second inlet 102 on the one liquid inlet portion is communicated with the liquid inlet end of the first outlet 201, the liquid outlet end of the first inlet 101 or the second inlet 102 on the other liquid inlet portion is communicated with the second outlet 202, and the first outlet 201, the first inlet 101, the second inlet 102, and the second outlet 202 are sequentially arranged along the moving direction of the flue gas.
As shown in fig. 3, as the flue gas moves towards the conveying direction and exchanges heat, the temperature of the flue gas gradually decreases, and for the high-temperature section part in the flue gas, the first working medium flows in from the first inlet 101, the first working medium flows out from the first outlet 201, and for the low-temperature section part in the flue gas, the second working medium flows in from the second inlet 102, absorbs sensible heat and latent heat in the flue gas, and then flows out from the second outlet 202. The arrangement is to independently control the flow of the first working medium and the flow of the second working medium, namely, the first working medium and the second working medium are adjustable, a certain amount of the first working medium is introduced into the first inlet 101, and a certain amount of the second working medium is introduced into the second inlet 102 of the box, so that the control and adjustment of the step heat exchange process are facilitated.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (6)
1. A device for flue gas step is got heat which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the heat exchanger comprises a heat exchanger shell (4), wherein a plurality of partition plates (5) are fixedly connected to the inner wall of the top end of the heat exchanger shell (4), at least one liquid inlet part is formed in the top end of the heat exchanger shell (4), a first outlet (201) and a second outlet (202) are further formed in the top end of the heat exchanger shell (4), and the liquid inlet part is communicated with the first outlet (201) and the second outlet (202);
the smoke source (301) is arranged on one side of the heat exchanger shell (4), and the smoke source (301) is used for providing and driving smoke to move.
2. The device for flue gas step heat extraction as claimed in claim 1, wherein: the liquid inlet portion is one in number, the liquid inlet portion is a first inlet (101) or a second inlet (102), and the first inlet (101) or the second inlet (102) is communicated with the first outlet (201) and the second outlet (202).
3. The device for flue gas step heat extraction of claim 2, wherein: the inner wall of the top end of the heat exchanger shell (4) is fixedly connected with two partition plates (5), a gap is formed between the two partition plates (5) and the inner wall of the bottom end of the heat exchanger shell (4), the first inlet (101) or the second inlet (102) is positioned between the two partition plates (5), the first outlet (201) is positioned at one side of the flue gas source (301) close to the first inlet (101) or the second inlet (102), the second outlet (202) is positioned at one side of the flue gas source (301) far away from the first inlet (101) or the second inlet (102), and the liquid outlet end of the first inlet (101) or the second inlet (102) is communicated with the first outlet (201) and the second outlet (202) through the gap.
4. The device for flue gas step heat extraction of claim 2, wherein: heat exchanger casing (4) top inner wall rigid coupling has two division board (5), two division board (5) with be provided with the clearance between heat exchanger casing (4) bottom inner wall, second export (202) are located two between division board (5), first export (201) are located second export (202) are close to one side of flue gas source (301), first import (101) or second import (102) are located second export (202) are kept away from one side of flue gas source (301), first import (101) or second import (102) go out the liquid end through the clearance with first export (201) with second export (202) intercommunication.
5. The device for flue gas step heat extraction of claim 1, wherein: the liquid inlet portion is two in number, one of the liquid inlet portion is a first inlet (101) or a second inlet (102), the other of the liquid inlet portion is a first inlet (101) or a second inlet (102), one of the first inlet (101) or the second inlet (102) of the liquid inlet portion is communicated with the first outlet (201), and the other of the liquid inlet portion is communicated with the first inlet (101) or the second inlet (102) of the liquid inlet portion is communicated with the second outlet (202).
6. The device for flue gas step heat extraction of claim 5, wherein: a middle separation plate is fixedly connected in the heat exchanger shell (4), the heat exchanger shell (4) is divided into a first heat exchange cavity (601) and a second heat exchange cavity (602) by the middle separation plate, the first heat exchange cavity (601) is provided with the first inlet (101) and the first outlet (201), the second heat exchange cavity (602) is provided with the second inlet (102) and the second outlet (202), and the first inlet (101) and the second inlet (102) are respectively positioned on two sides of the middle separation plate; division plates (5) are fixedly connected in the first heat exchange cavity (601) and the second heat exchange cavity (602) respectively, and intervals exist between the bottoms of the division plates (5) and the bottoms of the first heat exchange cavity (601) and the second heat exchange cavity (602) respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221829172.6U CN217685106U (en) | 2022-07-15 | 2022-07-15 | Device for step heating of flue gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221829172.6U CN217685106U (en) | 2022-07-15 | 2022-07-15 | Device for step heating of flue gas |
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| CN217685106U true CN217685106U (en) | 2022-10-28 |
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| CN202221829172.6U Active CN217685106U (en) | 2022-07-15 | 2022-07-15 | Device for step heating of flue gas |
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