CN208154508U - Novel high-temperature flue gas heat-exchanger rig - Google Patents
Novel high-temperature flue gas heat-exchanger rig Download PDFInfo
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- CN208154508U CN208154508U CN201820583861.0U CN201820583861U CN208154508U CN 208154508 U CN208154508 U CN 208154508U CN 201820583861 U CN201820583861 U CN 201820583861U CN 208154508 U CN208154508 U CN 208154508U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model discloses a kind of novel high-temperature flue gas heat-exchanger rigs comprising shell is equipped with superheater section and economizer section inside housings, and superheater section is located at the top of economizer section.The utility model has the advantage of, since the gap between two neighboring first tube bundle group is greater than the gap in first tube bundle group between two neighboring first tube bundle, gap between two neighboring second tube bundle group is greater than the gap in second tube bundle group between two neighboring second tube bundle, the coal dust accumulation of superheater section and economizer section center reduces, and alleviates clear dirt pressure；Coal dust accumulation rinses after reducing without using high pressure water, prevents oxygen from entering in shell and makes sulfur dioxide, sulfureted hydrogen burning, avoids first tube bundle and the burned damage of second tube bundle；The gap between gap and two neighboring second tube bundle group between two neighboring first tube bundle group is larger, so that working space becomes larger, searches leak source and repairing is relatively easy, the repair time is short, and consuming cost is few.
Description
Technical field：
The utility model relates to heat exchange equipments, and in particular to a kind of novel high-temperature flue gas heat-exchanger rig.
Background technique：
Waste heat boiler is generally made of fire tube evaporator section, high-pressure superheater, economizer, and size is larger, so waste heat boiler
The temperature difference of top and bottom is big, causes shell to generate biggish deflection, will cause equipment damage when serious.High-pressure superheater
Effect is to be overheated using high temperature rough gas to high-pressure saturated steam, and output superheated steam simultaneously drops high temperature rough gas
Temperature.The effect of economizer is that high temperature rough gas and boiler feedwater exchange heat, and enters gas bag as system water supplement, which is waste heat boiler
The endpiece of furnace.
HP steam superheater in traditional waste heat boiler and the gap between the heat-exchanging tube bundle of economizer are 10mm, heat exchange
Gap between tube bank is small to cause heat exchanger tube central area system resistance big, and the coal dust in raw gas is easy to poly- in center
Collection, blocking, when being cleared up using high pressure water, since space is limited, heat exchanger tube central area not easy cleaning can not be rinsed well；And
And have sulphur-containing substance in coal dust, sulphur-containing substance is dissolved in water formation acid solution after cleaning, and acid solution can corrode waste heat boiler,
And there are oxygen in waste heat boiler after clearing up, and heat can be distributed when waste heat boiler is corroded, so that the coal dust in coal dust
Burning leads to damage, the leakage of heat-exchanging tube bundle；It is inconvenient since the gap between heat-exchanging tube bundle is small after heat-exchanging tube bundle damage leakage
In maintenance, inner tube can only be arranged extraction and overhauled, integral replacing is needed if well damage, the repair time is long, consumption at
This is big.
Utility model content：
It is not easy to plug, the purpose of this utility model is to provide a kind of convenient for deashing, novel high-temperature flue gas easy to repair
Heat-exchanger rig.
The utility model is implemented by following technical solution：Novel high-temperature flue gas heat-exchanger rig comprising shell, in the shell
The top of body is equipped with high-temperature gas entrance, and high-temperature gas is equipped on the lower sides of the shell and is exported, in the shell
Portion is equipped with superheater section and economizer section, and the superheater section is located at the top of the economizer section；
The superheater section includes at least one level superheater, when having two-stage or two-stage the above superheater, institute
There is the superheater to arrange along the body height direction, the steam output end of the steam outlet pipe of superheater described in higher level and institute of junior
State the admission end connection of the steam inlet pipe of superheater；Positioned at the steam inlet pipe of the superheater of superheater section bottom
Admission end pass through the side wall of the shell and be placed in the outside of the shell, described at the top of the superheater section crosses hot charging
The side wall that the steam output end for the steam outlet pipe set passes through the shell is placed in the outside of the shell；
The economizer section includes at least one level coal saving device, when having two-stage or two-stage the above coal saving device, institute
There is the coal saving device to arrange along the body height direction, the water outlet of the outlet pipe of coal saving device described in higher level and institute of junior
State the water inlet end connection of the water inlet pipe of coal saving device；The water inlet pipe positioned at the coal saving device of economizer section bottom
Water inlet end pass through the side wall of the shell and be placed in the outside of the shell, province's coal dress at the top of the economizer section
The side wall that the water outlet for the outlet pipe set passes through the shell is placed in the outside of the shell.
Further, the superheater includes the steam inlet pipe and the steam outlet pipe, and the steam inlet pipe goes out described in
The lower section of steam pipe, is equipped with several first tube bundle groups for being parallel to each other between the steam inlet pipe and the steam outlet pipe, and described the
The admission end of one tube bank group is connected to the steam inlet pipe, and the steam output end of the first tube bundle group is connected to the steam outlet pipe.
Further, the gap between the two neighboring first tube bundle group is h1, and each first tube bundle group includes
At least two first tube bundles disposed in parallel, the gap in each first tube bundle group between the two neighboring first tube bundle
It is more than or equal to h2 for h2, h1, each first tube bundle includes the snakelike steam pipe that more axis are in the same plane.
Further, horizontal between the top of the adjacent two first tube bundle groups to be equipped with first gear tracheae, described the
One gear tracheae is parallel with the first tube bundle group, and the length of the first gear tracheae is equal to the width of the first tube bundle.
Further, the coal saving device includes the water inlet pipe and the outlet pipe, and the water inlet pipe goes out described in
The lower section of water pipe, is equipped with several second tube bundle groups for being parallel to each other between the water inlet pipe and the outlet pipe, and described the
The water inlet end of two tube bank groups is connected to the water inlet pipe, and the water outlet of the second tube bundle group is connected to the outlet pipe.
Further, the gap between the two neighboring second tube bundle group is h3, and each second tube bundle group includes
At least two second tube bundles disposed in parallel, the gap in each second tube bundle group between the two neighboring second tube bundle
It is more than or equal to h4 for h4, h3, each second tube bundle includes the snakelike conduit that more axis are in the same plane.
Further, horizontal between the adjacent two second tube bundle groups to be equipped with second gear tracheae, the second gear gas
Pipe is parallel with the second tube bundle group, and the length of the second gear tracheae is equal to the width of the second tube bundle.
Further, the side wall of the shell above the superheater section be equipped with upper manhole, the superheater section with
The side wall of the shell between the economizer section is equipped with middle manhole, and the bottom of the shell is equipped with lower manhole.
Further, the inner wall of the shell is equipped with refractory insulating layer.
The advantages of the utility model：1, superheater section and economizer section are isolated from waste heat boiler, is made into independent
Heat-exchanger rig reduces the temperature difference between the high-temperature gas entrance of shell and high-temperature gas outlet, to reduce the change of shell
Shape amount, avoids that housing distortion value is excessive to cause equipment damage；2, since the gap between two neighboring first tube bundle group is greater than
Gap in first tube bundle group between adjacent first tube bundle, after raw gas enters superheater section, with coal dust towards adjacent two
Gap movement between a first tube bundle group, reduces the coal dust accumulation of superheater section center；Two neighboring second pipe
Gap between beam group is greater than the gap in second tube bundle group between two neighboring second tube bundle, similarly, economizer section center
Coal dust accumulation decrease, alleviate clear dirt pressure；Coal dust accumulation rinses after reducing without using high pressure water, prevents
Block gas, which enters in shell, makes sulfur dioxide, sulfureted hydrogen burning, avoids first tube bundle and the burned damage of second tube bundle；3,
The gap between gap and two neighboring second tube bundle group between two neighboring first tube bundle group is larger, so that working space becomes
Greatly, it searches leak source and repairing is relatively easy, the repair time is short, and consuming cost is few.
Detailed description of the invention：
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the positive cross-sectional view of the utility model；
Fig. 2 is the side sectional view of the utility model；
Fig. 3 is the partial enlarged view at the position A in Fig. 2；
Fig. 4 is the partial enlarged view at the position B in Fig. 2.
Shell 1, high-temperature gas entrance 1-1, high-temperature gas outlet 1-2, superheater section 2, economizer section 3, steam inlet pipe 4, out
Steam pipe 5, first tube bundle group 6, refractory insulating layer 7, first tube bundle 8, snakelike steam pipe 9, water inlet pipe 10, outlet pipe 11, second tube bundle
Group 12, second tube bundle 13, snakelike conduit 14, first gear tracheae 15, second gear tracheae 16, upper manhole 1-3, middle manhole 1-4, servant
Hole 1-5.
Specific embodiment：
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1：
As shown in Figs 1-4, novel high-temperature flue gas heat-exchanger rig comprising shell 1 is equipped with High Temperature Gas at the top of shell 1
Body entrance 1-1, is equipped with high-temperature gas on the lower sides of shell 1 and exports 1-2, and superheater section 2 is equipped with inside shell 1 and is saved
Coal device section 3, superheater section 2 are located at the top of economizer section 3.
Superheater section 2 includes level-one superheater, and superheater includes steam inlet pipe 4 and steam outlet pipe 5, and steam inlet pipe 4 is located at
The lower section of steam pipe 5, the side wall that the admission end of steam inlet pipe 4 passes through shell 1 are placed in the outside of shell 1, and the steam output end of steam outlet pipe 5 passes through
The side wall of shell 1 is placed in the outside of shell 1；Embodiments thereof may also include two-stage or the above superheater of two-stage, when there is two-stage
Or when the above superheater of two-stage, all superheaters are arranged along 1 short transverse of shell, the steam outlet pipe 5 of higher level's superheater
Steam output end is connected to the admission end of the steam inlet pipe 4 of junior superheater；Positioned at the steam inlet pipe of the superheater of 2 bottom of superheater section
The side wall that 4 admission end passes through shell 1 is placed in the outside of shell 1, positioned at the steam outlet pipe 5 of the superheater at 2 top of superheater section
Steam output end pass through the side wall of shell 1 and be placed in the outside of shell 1.
Set between steam inlet pipe 4 and steam outlet pipe 5 there are five the first tube bundle group 6 that is parallel to each other, first tube bundle group 6 into vapour
End is connected to steam inlet pipe 4, and the steam output end of first tube bundle group 6 is connected to steam outlet pipe 5；Sky between two neighboring first tube bundle group 6
Gap h1 is 20mm, and each first tube bundle group 6 includes three first tube bundles 8 disposed in parallel, adjacent two in each first tube bundle group 6
Gap h2 between a first tube bundle 8 is 10mm, and each first tube bundle 8 includes the snakelike vapour that three axis are in the same plane
Pipe 9；It is horizontal between the top of two adjacent first tube bundle groups 6 to be equipped with first gear tracheae 15, first gear tracheae 15 and the first pipe
Beam group 6 is parallel, and the length of first gear tracheae 15 is equal to the width of first tube bundle 8.
Economizer section 3 includes level-one coal saving device, and coal saving device includes water inlet pipe 10 and outlet pipe 11, and water inlet pipe 10 is located at
The lower section of outlet pipe 11, the side wall that the water inlet end of water inlet pipe 10 passes through shell 1 are placed in the outside of shell 1, the water outlet of outlet pipe 11
End is placed in the outside of shell 1 across the side wall of shell 1；Embodiments thereof may also include two-stage or the above coal saving device of two-stage, when
When having two-stage or the above coal saving device of two-stage, all coal saving device are arranged along 1 short transverse of shell, the water outlet of higher level coal saving device
The water outlet of pipe 11 is connected to the water inlet end of the water inlet pipe 10 of junior coal saving device；Positioned at the coal saving device of 3 bottom of economizer section
The water inlet end of water inlet pipe 10 pass through the side wall of shell 1 and be placed in the outside of shell 1, positioned at the coal saving device at 3 top of economizer section
The water outlet of outlet pipe 11 pass through the side wall of shell 1 and be placed in the outside of shell 1.
Several second tube bundle groups 12 being parallel to each other, second tube bundle group 12 are equipped between water inlet pipe 10 and outlet pipe 11
Water inlet end be connected to water inlet pipe 10, the water outlet of second tube bundle group 12 is connected to outlet pipe 11；Two neighboring second tube bundle group
Gap h3 between 12 is 20mm, and each second tube bundle group 12 includes three second tube bundles 13 disposed in parallel, each second pipe
Gap h4 in beam group 12 between two neighboring second tube bundle 13 is 10mm, and each second tube bundle 13 includes that three axis are located at together
Snakelike conduit 14 in one plane；It is horizontal between two adjacent second tube bundle groups 12 to be equipped with second gear tracheae 16, second gear gas
Pipe 16 is parallel with second tube bundle group 12, and the length of second gear tracheae 16 is equal to the width of second tube bundle 13.
The side wall of the shell 1 of 2 top of superheater section is equipped with upper manhole 1-3, between superheater section 2 and economizer section 3
The side wall of shell 1 is equipped with middle manhole 1-4, and the bottom of shell 1 is equipped with lower manhole 1-5, and the inner wall of shell 1 is equipped with fire resistant heat preserving
Layer 7.
Working principle：
The present embodiment by waste heat boiler superheater section 2 and economizer section 3 separate, be made into independent heat exchange dress
It sets, the temperature difference between the high-temperature gas entrance 1-1 of heat-exchanger rig and high-temperature gas outlet 1-2 is reduced, to reduce shell 1
Deflection, avoid that 1 deflection of shell is excessive to cause equipment damage；It is equipped with refractory insulating layer 7 on the inner wall of shell 1, prevents
The only side wall overheat of shell 1 guarantees that the wall temperature of shell 1 is less than wall temperature allowable, avoids rotten, the damage of shell 1.
When heat exchange, boiler water is entered by the water inlet end of the water inlet pipe 10 of economizer section 3, and water inlet pipe 10 carries out boiler water equal
Even distribution, boiler water enter snakelike conduit 14 after the outflow of water inlet pipe 10, finally draw from the water outlet of outlet pipe 11；Saturation is steamed
Vapour is entered by the admission end of the steam inlet pipe 4 of superheater section 2, and steam inlet pipe 4 is uniformly distributed saturated vapor, saturated vapor from into
Steam pipe 4 is discharged into snakelike steam pipe 9, finally draws from the steam output end of steam outlet pipe 5.
High temperature rough gas enters shell 1 by high-temperature gas entrance 1-1, first passes through superheater section 2, adjacent in superheater section 2
Two first tube bundle groups 6 top between it is horizontal be equipped with first gear tracheae 15, first gear tracheae 15 makes 2 top of superheater section
Gap be evenly distributed, avoid high temperature rough gas directly from the gap between two adjacent first tube bundle groups 6 by causing
Heat exchange it is uneven；After high temperature rough gas enters superheater section 2, exchange heat with the saturated vapor in snakelike steam pipe 9, saturated vapor
Become superheated steam after heat absorption, while the temperature of high temperature rough gas reduces；Due to the gap between two neighboring first tube bundle group 6
H1 is 20mm, greater than the gap h2 between first tube bundle 8 every two adjacent in first tube bundle group 6, so the coal in raw gas
Dust is moved towards the gap between two neighboring first tube bundle group 6, reduces the coal dust accumulation of 2 center of superheater section
Amount；
High temperature rough gas enters economizer section 3 after coming out from superheater section 2, adjacent two second pipes in economizer section 3
Horizontal between the top of beam group 12 to be equipped with second gear tracheae 16, second gear tracheae 16 makes the gap distribution at 3 top of economizer section
Uniformly, high temperature rough gas is avoided directly to exchange heat not from the gap between two adjacent second tube bundle groups 12 by caused
?；After high temperature rough gas enters economizer section 3, exchange heat with the boiler water in snakelike conduit 14, temperature after boiler water heat absorption
It increases, while the temperature of high temperature rough gas further decreases；Since the gap h3 between two neighboring second tube bundle group 12 is
20mm, greater than the gap h4 between two adjacent second tube bundles 13 every in second tube bundle group 12, so the coal dust in raw gas
Dirt is moved towards the gap between two neighboring second tube bundle group 12, reduces the coal dust accumulation of 3 center of economizer section；
After the coal dust accumulation of 3 center of superheater section 2 and economizer section is reduced, the clear dirt pressure of exchange thermal, coal are alleviated
Dust accumulation rinses after reducing without using high pressure water, prevents oxygen from entering in shell 1 and makes sulfur dioxide, hydrogen sulfide combustion
It burns, avoids first tube bundle 8 and the burned damage of second tube bundle 13；Gap between two neighboring first tube bundle group 6 and adjacent
Gap between two second tube bundle groups 12 is larger so that working space becomes larger, search leak source and repair it is relatively easy, when maintenance
Between it is short, consuming cost is few.
High temperature rough gas from economizer section 3 come out after, from high-temperature gas outlet 1-2 draw, into rear system.
When equipment stops or needs to overhaul, the position that can be overhauled as needed is in upper manhole 1-3, middle manhole 1-4, lower people
Selection enters the position of shell 1, easy access in the 1-5 of hole.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (9)
1. novel high-temperature flue gas heat-exchanger rig, which is characterized in that it includes shell, is equipped with high-temperature gas at the top of the shell
Entrance is equipped with high-temperature gas on the lower sides of the shell and exports, and is equipped with superheater Duan He in the enclosure interior and saves coal
Device section, the superheater section are located at the top of the economizer section；
The superheater section includes at least one level superheater, when having two-stage or two-stage the above superheater, Suo Yousuo
It states superheater to arrange along the body height direction, mistake described in the steam output end of the steam outlet pipe of superheater described in higher level and junior
The admission end of the steam inlet pipe of thermal is connected to；Positioned at the superheater of superheater section bottom the steam inlet pipe into
The side wall that vapour end passes through the shell is placed in the outside of the shell, the superheater at the top of the superheater section
The side wall that the steam output end of the steam outlet pipe passes through the shell is placed in the outside of the shell；
The economizer section includes at least one level coal saving device, when having two-stage or two-stage the above coal saving device, Suo Yousuo
It states coal saving device to arrange along the body height direction, be saved described in the water outlet of the outlet pipe of coal saving device described in higher level and junior
The water inlet end of the water inlet pipe of device for coal is connected to；Positioned at the coal saving device of economizer section bottom the water inlet pipe into
The side wall that water end (W.E.) passes through the shell is placed in the outside of the shell, the coal saving device at the top of the economizer section
The side wall that the water outlet of the outlet pipe passes through the shell is placed in the outside of the shell.
2. novel high-temperature flue gas heat-exchanger rig according to claim 1, which is characterized in that the superheater includes described
Steam inlet pipe and the steam outlet pipe, the steam inlet pipe are located at the lower section of the steam outlet pipe, the steam inlet pipe and the steam outlet pipe it
Between be equipped with several first tube bundle groups for being parallel to each other, the admission end of the first tube bundle group is connected to the steam inlet pipe, described
The steam output end of first tube bundle group is connected to the steam outlet pipe.
3. novel high-temperature flue gas heat-exchanger rig according to claim 2, which is characterized in that the two neighboring first tube bundle
Gap between group is h1, and each first tube bundle group includes at least two first tube bundles disposed in parallel, each described the
Gap in one tube bank group between the two neighboring first tube bundle is h2, and h1 is more than or equal to h2, each first tube bundle packet
Include the snakelike steam pipe that more axis are in the same plane.
4. novel high-temperature flue gas heat-exchanger rig according to claim 3, which is characterized in that first pipe of adjacent two
Horizontal between the top of beam group to be equipped with first gear tracheae, the first gear tracheae is parallel with the first tube bundle group, and described first
The length for keeping off tracheae is equal to the width of the first tube bundle.
5. novel high-temperature flue gas heat-exchanger rig according to claim 1, which is characterized in that the coal saving device includes described
Water inlet pipe and the outlet pipe, the water inlet pipe are located at the lower section of the outlet pipe, the water inlet pipe and the outlet pipe it
Between be equipped with several second tube bundle groups for being parallel to each other, the water inlet end of the second tube bundle group is connected to the water inlet pipe, described
The water outlet of second tube bundle group is connected to the outlet pipe.
6. novel high-temperature flue gas heat-exchanger rig according to claim 5, which is characterized in that the two neighboring second tube bundle
Gap between group is h3, and each second tube bundle group includes at least two second tube bundles disposed in parallel, each described the
Gap in two tube bank groups between the two neighboring second tube bundle is h4, and h3 is more than or equal to h4, each second tube bundle packet
Include the snakelike conduit that more axis are in the same plane.
7. novel high-temperature flue gas heat-exchanger rig according to claim 6, which is characterized in that second pipe of adjacent two
Horizontal between beam group to be equipped with second gear tracheae, the second gear tracheae is parallel with the second tube bundle group, the second gear tracheae
Length be equal to the second tube bundle width.
8. novel high-temperature flue gas heat-exchanger rig according to claim 1, which is characterized in that the institute above the superheater section
The side wall for stating shell is equipped with upper manhole, and the side wall of the shell between the superheater section and the economizer section is equipped with
The bottom of middle manhole, the shell is equipped with lower manhole.
9. novel high-temperature flue gas heat-exchanger rig according to claim 1, which is characterized in that the inner wall of the shell is equipped with
Refractory insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820583861.0U CN208154508U (en) | 2018-04-20 | 2018-04-20 | Novel high-temperature flue gas heat-exchanger rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820583861.0U CN208154508U (en) | 2018-04-20 | 2018-04-20 | Novel high-temperature flue gas heat-exchanger rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208154508U true CN208154508U (en) | 2018-11-27 |
Family
ID=64376242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820583861.0U Active CN208154508U (en) | 2018-04-20 | 2018-04-20 | Novel high-temperature flue gas heat-exchanger rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208154508U (en) |
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2018
- 2018-04-20 CN CN201820583861.0U patent/CN208154508U/en active Active
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