CN220647857U - Waste heat utilization vaporizer - Google Patents
Waste heat utilization vaporizer Download PDFInfo
- Publication number
- CN220647857U CN220647857U CN202322273660.4U CN202322273660U CN220647857U CN 220647857 U CN220647857 U CN 220647857U CN 202322273660 U CN202322273660 U CN 202322273660U CN 220647857 U CN220647857 U CN 220647857U
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- shell
- pipe
- coil
- inlet
- waste heat
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- 239000002918 waste heat Substances 0.000 title claims abstract description 29
- 239000006200 vaporizer Substances 0.000 title claims abstract description 28
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 87
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 20
- 238000005338 heat storage Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims description 38
- 229910021529 ammonia Inorganic materials 0.000 claims description 37
- 239000010935 stainless steel Substances 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000009834 vaporization Methods 0.000 abstract description 8
- 230000008016 vaporization Effects 0.000 abstract description 8
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 239000012774 insulation material Substances 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model relates to a waste heat utilization vaporizer, which comprises a shell, and a coil pipe and a fin pipe which are arranged in the shell, wherein the shell comprises a U-shaped shell, an upper shell sealing plate, a right sealing plate and a left sealing plate, a heat storage medium is arranged in a cavity of the shell, an insulating layer is arranged outside the shell, the coil pipe and the fin pipe are both arranged in the shell, the coil pipe is a waist-shaped coil pipe, the fin pipe comprises a left fin pipe, an expansion joint and a right fin pipe, and the axis of the fin pipe is coplanar with or is arranged at a position which is lower than the central plane of the coil pipe. The utility model can collect and utilize the waste heat of the tail gas in the system, and uses the heat for vaporization of the liquid ammonia, thereby improving the energy utilization rate of the system; the liquid ammonia vaporization pipeline adopts a plurality of groups of coil pipe structures, so that the heat exchange area is increased and the piezoresistance is lower; the tail gas recovery pipeline adopts a multi-group fin structure, so that the heat exchange area is increased, the piezoresistance is smaller, and the tail gas can be conveniently and smoothly discharged; the heat insulation material is attached to the outer surface of the shell, so that heat dissipation is reduced.
Description
Technical Field
The utility model relates to the technical field of evaporators, in particular to a waste heat utilization evaporator.
Background
Hydrogen energy is the cleanest energy source in the world, but the problem of storing and transporting hydrogen energy is difficult to solve completely in a short time, so that ammonia can be regarded as a very potential energy source as a good hydrogen storage medium. Ammonia is easy to liquefy and is convenient to transport and store, and the existing ammonia storage and transportation mode also uses the characteristic that ammonia is liquefied into liquid ammonia under pressure and stored in a liquid ammonia tank.
Ammonia gas is required for research on ammonia energy applications, including substitution of fossil fuels with ammonia energy, combustion of ammonia, and the like. The ammonia is stored in a liquid state and in a gaseous state, and a special vaporizer is required to vaporize the liquid ammonia into ammonia gas in the process. The liquid ammonia has higher vaporization latent heat, more heat needs to be absorbed in the vaporization process, and if the vaporizer needs an additional heat source, the energy consumption of the whole system can be increased, and the efficiency of the system is reduced. Therefore, it is very necessary to design a waste heat utilization vaporizer that stores heat by collecting waste heat of exhaust gas discharged from a system, and heats liquid ammonia to vaporize it to a specific temperature by using a heat storage medium.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model provides a waste heat utilization vaporizer which is used for collecting and utilizing the waste heat of tail gas in a system.
The technical scheme provided by the utility model is as follows:
the waste heat utilization vaporizer comprises a shell, a coil pipe and a finned tube, wherein the shell comprises a U-shaped shell, an upper shell sealing plate, a right sealing plate and a left sealing plate, a shell cavity is formed in the shell, a heat storage medium is arranged in the shell cavity, and a heat preservation layer is arranged outside the shell;
the upper sealing plate of the shell is provided with a liquid inlet and a liquid outlet, the liquid inlet extends into the bottom of the cavity of the shell, and the liquid outlet is positioned at the top of the cavity of the shell;
a coil inlet and a left fin tube are arranged on the left sealing plate;
a coil outlet and a right fin tube are arranged on the right sealing plate;
the coil pipe is arranged in the shell, one end of the coil pipe is connected with the coil pipe inlet, and the other end of the coil pipe is connected with the coil pipe outlet;
the coil inlet is connected with one end of an ammonia inlet branch pipe outside the shell, and the other end of the ammonia inlet branch pipe is connected with an ammonia inlet main pipe;
one end of the ammonia inlet main pipe is provided with an ammonia pipeline pipe cap, and the other end of the ammonia inlet main pipe is provided with a total ammonia inlet joint;
the finned tube is arranged in the shell and comprises a left finned tube, an expansion joint and a right finned tube, one end of the left finned tube is connected with the middle of the tail pipe main pipe, the other end of the left finned tube is connected with the expansion joint, one end of the right finned tube is connected with the expansion joint, and the other end of the right finned tube is connected with the tail gas inlet;
one end of the tail pipe main pipe is provided with a tail pipe cap, and the other end of the tail pipe main pipe is provided with a tail flange;
the fin tube axis and the coil center plane are arranged in a coplanar manner, or the fin tube axis is positioned at the position of the coil center plane which is lower than the coil center plane.
The side of the U-shaped shell is provided with a liquid discharging rod at the lower part, and the other end of the liquid discharging rod is connected with a liquid discharging port.
Further, the heat-insulating layer is made of ceramic fiber blanket.
Further, the coil pipe is made of stainless steel, and the marks are SUS, SUS and the like.
Further, the fin tube consists of a tube body and fins, wherein the tube body is made of stainless steel, and the marks are SUS, SUS and the like; the fins are spiral or H-shaped, and are made of stainless steel with the marks of SUS, SUS and the like, aluminum alloy or titanium alloy.
Further, a threaded plug is arranged at the liquid outlet.
Further, the lower end of the liquid inlet is at a certain distance from the bottom of the shell cavity.
Further, the heat storage medium is water or glycol.
Further, the number of the coils is one or more, and the number of the coils is determined according to the flow rate and the heat exchange area of the liquid ammonia to be vaporized; the number of the ammonia inlet branch pipes is corresponding to the number of the coil pipes.
Further, the number of the fin tubes is one or more, and the fin tubes are determined according to the available tail gas flow and heat exchange area.
The utility model has the beneficial effects that:
1. the waste heat of the tail gas in the system is collected and utilized, and the part of heat is used for vaporization of liquid ammonia, so that the extra power increase of the system is avoided, and the energy utilization rate of the system is improved;
2. the liquid ammonia vaporization pipeline adopts a coil pipe structure, so that the heat exchange area is increased and the piezoresistance is lower; the tail gas recovery pipeline adopts a fin structure, so that the heat exchange area is increased, the piezoresistance is smaller, and the tail gas can be conveniently and smoothly discharged;
3. the fin tube axis is arranged coplanar with the coil central plane, or the fin tube axis is positioned at the position of the lower part of the coil central plane.
The fin tubes are internally provided with a heat medium, and the coil tubes are internally provided with a cold medium, so that the design is beneficial to realizing the cold-heat convection of the heat storage medium;
4. the heat storage medium absorbs heat from the finned tubes and transfers the heat to the coil pipe to vaporize the liquid ammonia, and the heat storage medium self-circulates in the shell side through cold-hot convection without being driven by external equipment to circulate.
5. The heat insulation material is attached to the outer surface of the shell, so that heat dissipation is reduced.
6. The heat storage medium is provided with a liquid inlet and a liquid outlet, so that the heat storage medium is convenient to replace regularly, and the cavity of the heat exchanger is cleaned and maintained.
7. The expansion joints are arranged between the finned tubes, so that deformation generated by heat absorption expansion of the finned tubes can be absorbed, and the stability of the service performance of the heat exchanger is improved.
Drawings
FIG. 1 is an isometric view of a waste heat utilizing vaporizer according to embodiment 1;
fig. 2 is a schematic diagram of the internal structure of a waste heat utilization vaporizer according to embodiment 1;
FIG. 3 is a partial view of the inner finned tube of the waste heat utilizing vaporizer of example 1;
FIG. 4 is a cross-sectional view of the liquid inlet and outlet of the vaporizer for waste heat utilization according to embodiment 1;
fig. 5 is a schematic view of an insulation layer of a vaporizer for waste heat utilization according to embodiment 1.
In the figure: 1-shell, 101-U-shaped shell, 102-right seal plate, 103-left seal plate, 104-shell upper seal plate, 105-shell cavity, 2-coil, 3-fin tube, 301-left fin tube, 302-expansion joint, 303-right fin tube, 4-liquid inlet, 5-liquid outlet, 6-coil outlet, 7-ammonia inlet branch pipe, 8-coil inlet, 9-ammonia inlet manifold, 10-ammonia channel pipe cap, 11-total ammonia inlet joint, 12-tail gas inlet, 13-tail pipe manifold, 14-tail pipe cap, 15-tail pipe flange, 16-liquid discharge rod, 17-liquid discharge port, 18-screw plug, 19-fixed leg, 20-heat storage medium and 21-heat preservation layer.
Detailed Description
The utility model is further illustrated below in connection with specific embodiments.
Example 1
Referring to fig. 1-5, in this embodiment, a waste heat utilization vaporizer includes a housing 1, a coil pipe 2, and a fin tube 3, where the housing 1 includes a U-shaped housing 101, a housing upper sealing plate 104, a right sealing plate 102, and a left sealing plate 103, a housing cavity 105 is disposed in the housing 1, a heat storage medium 20 is disposed in the housing cavity 105, and an insulation layer 21 is disposed outside the housing 1;
the upper shell sealing plate 104 is provided with a liquid inlet 4 and a liquid outlet 5, the liquid inlet 4 extends into the bottom of the shell cavity 105, and the liquid outlet 5 is positioned at the top of the shell cavity 105;
the left sealing plate 103 is provided with a coil inlet 8 and a left fin tube 301;
the right sealing plate 102 is provided with a coil outlet 6 and a right fin tube 303;
the coil pipe 2 is arranged in the shell 1, one end of the coil pipe 2 is connected with the coil pipe inlet 8, and the other end of the coil pipe 2 is connected with the coil pipe outlet 6;
the coil inlet 8 is connected with one end of an ammonia inlet branch pipe 7 outside the shell 1, and the other end of the ammonia inlet branch pipe 7 is connected with an ammonia inlet main pipe 9;
an ammonia pipeline pipe cap 10 is arranged at one end of the ammonia inlet main pipe 9, and a total ammonia inlet joint 11 is arranged at the other end of the ammonia inlet main pipe 9;
the finned tube 3 is arranged in the shell 1, the finned tube 3 comprises a left finned tube 301, an expansion joint 302 and a right finned tube 303, one end of the left finned tube 301 is connected with the middle of the tail pipe main 13, the other end of the left finned tube 301 is connected with the expansion joint 302, one end of the right finned tube 303 is connected with the expansion joint 302, and the other end of the right finned tube 303 is connected with the tail gas inlet 12;
one end of the tail pipe main pipe 13 is provided with a tail pipe cap 14, and the other end of the tail pipe main pipe 13 is provided with a tail pipe flange 15;
the axial lead of the finned tube 3 is arranged coplanar with the central surface of the coil pipe 2, or the axial lead of the finned tube 3 is positioned at the position of the central surface of the coil pipe 2.
A liquid discharge rod 16 is arranged at the lower side of the side surface of the U-shaped shell 101, and the other end of the liquid discharge rod 16 is connected with a liquid discharge port 17.
Further, the heat-insulating layer 21 is made of ceramic fiber blanket.
Further, the coil pipe 2 is made of stainless steel, and the marks are SUS304, SUS316 and the like.
Further, the fin tube 3 is composed of a tube body and fins, wherein the tube body is made of stainless steel, and the marks are SUS304, SUS316 and the like; the fins are spiral or H-shaped, and are made of stainless steel with the marks of SUS304, SUS316 and the like, aluminum alloy or titanium alloy.
Further, a threaded plug 18 is arranged at the liquid outlet 17.
Further, the lower end of the liquid inlet 4 is spaced from the bottom of the housing cavity 105.
Further, the heat storage medium is water or glycol.
Further, the number of the coils 2 is one or more, and is determined according to the flow rate and the heat exchange area of the liquid ammonia to be vaporized; the number of the ammonia inlet branch pipes 7 is corresponding to the number of the coil pipes 4.
Further, the number of the fin tubes 3 is one or more, and the number is determined according to the available tail gas flow and heat exchange area.
Before the vaporizer is used, the liquid outlet is blocked by a threaded plug 18, and a heat storage medium 20 is added into the vaporizer housing cavity 105 from the liquid inlet 4 until the vaporizer housing cavity is beyond the coil pipe 2;
the coil inlet 8 is connected with a liquid ammonia supply pipeline, and the coil outlet 6 is connected with an ammonia supply pipeline; the tail gas inlet 12 is connected with a tail gas outlet in the system, and the finned tube tail flange 15 is connected with a system exhaust port;
when the waste heat utilization vaporizer works normally, tail gas is firstly introduced into the finned tube, liquid ammonia is introduced into the coil pipe 2 when the heat storage medium is heated to about 90 ℃ by the waste heat of the tail gas, the waste heat of the tail gas is transferred to the heat storage medium 20 through the finned tube 3, the heat storage medium 20 transfers heat to the liquid ammonia through the coil pipe 2, and vaporization is realized by absorbing heat of the liquid ammonia. The heat preservation layer 21 that the casing 1 outside set up keeps warm the heat of casing inside, prevents to dispel the heat at the heat exchanger in heat transfer vaporization in-process.
When the vaporizer is not in use, the threaded plug 18 at the liquid outlet 17 is unscrewed to discharge the heat storage medium 20.
Claims (9)
1. A waste heat utilization vaporizer is characterized by comprising a shell (1), a coil pipe (2) and a fin tube (3),
the shell (1) comprises a U-shaped shell (101), an upper shell sealing plate (104), a right sealing plate (102) and a left sealing plate (103), a shell cavity (105) is arranged in the shell (1), a heat storage medium (20) is arranged in the shell cavity (105), and an insulating layer (21) is arranged outside the shell (1);
the upper shell sealing plate (104) is provided with a liquid inlet (4) and a liquid outlet (5), the liquid inlet (4) extends into the bottom of the shell cavity (105), and the liquid outlet (5) is positioned at the top of the shell cavity (105);
a coil inlet (8) and a left fin tube (301) are arranged on the left sealing plate (103);
a coil outlet (6) and a right fin tube (303) are arranged on the right sealing plate (102);
the coil pipe (2) is arranged in the shell (1), one end of the coil pipe (2) is connected with the coil pipe inlet (8), and the other end of the coil pipe (2) is connected with the coil pipe outlet (6);
the coil inlet (8) is connected with one end of an ammonia inlet branch pipe (7) outside the shell (1), and the other end of the ammonia inlet branch pipe (7) is connected with an ammonia inlet main pipe (9);
one end of the ammonia inlet main pipe (9) is provided with an ammonia pipeline pipe cap (10), and the other end of the ammonia inlet main pipe (9) is provided with a total ammonia inlet joint (11);
the finned tube (3) is arranged in the shell (1), the finned tube (3) comprises a left finned tube (301), an expansion joint (302) and a right finned tube (303), one end of the left finned tube (301) is connected with the middle of the tail pipe main pipe (13), the other end of the left finned tube (301) is connected with the expansion joint (302), one end of the right finned tube (303) is connected with the expansion joint (302), and the other end of the right finned tube (303) is connected with the tail gas inlet (12);
one end of the tail pipe main pipe (13) is provided with a tail pipe cap (14), and the other end of the tail pipe main pipe (13) is provided with a tail flange (15);
the axial lead of the finned tube (3) and the central surface of the coil (2) are arranged in a coplanar manner, or the axial lead of the finned tube (3) is positioned at the position of the central surface of the coil (2) which is lower than the central surface;
a liquid discharge rod (16) is arranged at the lower part of the side surface of the U-shaped shell (101), and the other end of the liquid discharge rod (16) is connected with a liquid discharge port (17).
2. A waste heat utilizing vaporizer according to claim 1, wherein,
the heat preservation layer (21) is made of ceramic fiber blanket.
3. A waste heat utilizing vaporizer according to claim 1, wherein,
the coil pipe (2) is made of stainless steel.
4. A waste heat utilizing vaporizer according to claim 1, wherein,
the finned tube (3) consists of a tube body and fins, wherein the tube body is made of stainless steel; the fins are spiral or H-shaped, and are made of stainless steel, aluminum alloy or titanium alloy.
5. A waste heat utilizing vaporizer according to claim 1, wherein,
a threaded plug (18) is arranged at the liquid outlet (17).
6. A waste heat utilizing vaporizer according to claim 1, wherein,
the lower end of the liquid inlet (4) is at a certain distance from the bottom of the shell cavity (105).
7. A waste heat utilizing vaporizer according to claim 1, wherein,
the heat storage medium is water or glycol.
8. A waste heat utilizing vaporizer according to claim 1, wherein,
the number of the coils (2) is one or more, and is determined according to the flow rate and the heat exchange area of the liquid ammonia to be vaporized; the number of the ammonia inlet branch pipes (7) is corresponding to the number of the coil pipes (2).
9. A waste heat utilizing vaporizer according to claim 1, wherein,
the number of the fin tubes (3) is one or more, and the fin tubes are determined according to the available tail gas flow and heat exchange area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322273660.4U CN220647857U (en) | 2023-08-23 | 2023-08-23 | Waste heat utilization vaporizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322273660.4U CN220647857U (en) | 2023-08-23 | 2023-08-23 | Waste heat utilization vaporizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220647857U true CN220647857U (en) | 2024-03-22 |
Family
ID=90286321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322273660.4U Active CN220647857U (en) | 2023-08-23 | 2023-08-23 | Waste heat utilization vaporizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220647857U (en) |
-
2023
- 2023-08-23 CN CN202322273660.4U patent/CN220647857U/en active Active
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