CN112577343A - Plate heat exchanger for high-temperature hydrogen-rich water-containing gas and application thereof - Google Patents
Plate heat exchanger for high-temperature hydrogen-rich water-containing gas and application thereof Download PDFInfo
- Publication number
- CN112577343A CN112577343A CN202011544877.9A CN202011544877A CN112577343A CN 112577343 A CN112577343 A CN 112577343A CN 202011544877 A CN202011544877 A CN 202011544877A CN 112577343 A CN112577343 A CN 112577343A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- plate heat
- plate
- metal
- plates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007789 gas Substances 0.000 title claims abstract description 51
- 239000001257 hydrogen Substances 0.000 title claims abstract description 39
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 39
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 69
- 239000002184 metal Substances 0.000 claims abstract description 69
- 239000012530 fluid Substances 0.000 claims abstract description 46
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 9
- 238000005219 brazing Methods 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims abstract description 7
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 7
- 229910000856 hastalloy Inorganic materials 0.000 claims description 6
- 229910000934 Monel 400 Inorganic materials 0.000 claims description 4
- OANFWJQPUHQWDL-UHFFFAOYSA-N copper iron manganese nickel Chemical compound [Mn].[Fe].[Ni].[Cu] OANFWJQPUHQWDL-UHFFFAOYSA-N 0.000 claims description 4
- 239000002994 raw material Substances 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 238000005868 electrolysis reaction Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VCGRFBXVSFAGGA-UHFFFAOYSA-N (1,1-dioxo-1,4-thiazinan-4-yl)-[6-[[3-(4-fluorophenyl)-5-methyl-1,2-oxazol-4-yl]methoxy]pyridin-3-yl]methanone Chemical compound CC=1ON=C(C=2C=CC(F)=CC=2)C=1COC(N=C1)=CC=C1C(=O)N1CCS(=O)(=O)CC1 VCGRFBXVSFAGGA-UHFFFAOYSA-N 0.000 description 1
- WNEODWDFDXWOLU-QHCPKHFHSA-N 3-[3-(hydroxymethyl)-4-[1-methyl-5-[[5-[(2s)-2-methyl-4-(oxetan-3-yl)piperazin-1-yl]pyridin-2-yl]amino]-6-oxopyridin-3-yl]pyridin-2-yl]-7,7-dimethyl-1,2,6,8-tetrahydrocyclopenta[3,4]pyrrolo[3,5-b]pyrazin-4-one Chemical compound C([C@@H](N(CC1)C=2C=NC(NC=3C(N(C)C=C(C=3)C=3C(=C(N4C(C5=CC=6CC(C)(C)CC=6N5CC4)=O)N=CC=3)CO)=O)=CC=2)C)N1C1COC1 WNEODWDFDXWOLU-QHCPKHFHSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/087—Heat exchange elements made from metals or metal alloys from nickel or nickel alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a plate heat exchanger for high-temperature hydrogen-rich water-containing gas, which comprises a plurality of metal plates, wherein the metal plates are herringbone corrugated plates with the thickness of 0.3-0.6 mm, adjacent metal plates are fully laminated and overlapped at 180 degrees to form alternately distributed cold and hot runners and exchange heat through the metal plates, the metal plates are nickel-based alloy plates, and the adjacent metal plates are welded through nickel foil brazing filler metal. The invention also relates to application of the plate heat exchanger, which comprises the step of introducing hot fluid and cold fluid with inlet pressure between 0.1MPaA and 0.2MPaA into the plate heat exchanger for heat exchange, wherein the hot fluid and/or the cold fluid is high-temperature hydrogen-rich water-containing gas. According to the plate heat exchanger, high-temperature heat is effectively recycled, the purpose of efficiently and comprehensively utilizing heat can be achieved, and the plate heat exchanger can work under the high-temperature low-resistance hydrogen-rich water-containing environment.
Description
Technical Field
The present invention relates to heat exchangers, and more particularly to a plate heat exchanger for high temperature hydrogen-rich aqueous gas and applications thereof.
Background
The research of hydrogen production by water electrolysis is at the market hotspot at present. Among many hydrogen production technologies, a Solid Oxide Electrolysis Cell (SOEC) is considered as one of the most efficient and safe hydrogen production methods. The core reactor of the high-temperature water electrolysis hydrogen production technology is a solid oxide electrolytic cell stack. Applying a certain DC voltage to the electrodes at both sides of the electrolytic cell stack, and decomposing high-temperature water vapor at the hydrogen electrode to generate H2And O2-，O2-Reaches the oxygen electrode through the compact solid oxide electrolyte layer, loses electrons at the oxygen electrode to obtain O2. The high-temperature water electrolysis hydrogen production technology has the following remarkable advantages: (1) the electric energy consumption in the electrolysis process is reduced by 20-30% at a high temperature, and the electrolysis efficiency can reach 90-100%; (2) the metal oxide with relatively low price can be used for replacing noble metal as an electrode material, so that the cost of hydrogen production equipment is reduced.
Solid Oxide Fuel Cells (SOFC) are an emerging energy technology developed in recent years. Unlike conventional thermal power generation, which requires multiple energy conversions from chemical energy to thermal energy, from thermal energy to mechanical energy, and from mechanical energy to electrical energy, SOFC is a device that directly converts chemical energy of fuel into electrical energy. Because the Carnot cycle is not needed, the energy conversion efficiency of the SOFC is far higher than 40 percent of that of an internal combustion engine and can reach 60 to 70 percent. SOFC and SOEC are the reverse process.
The SOEC and SOFC single cells adopt modularized integrated galvanic pile, the galvanic pile is applied to an engineering system through series-parallel connection, the working temperature is 600-1000 ℃, because the galvanic pile has larger temperature difference between the feeding and the product, a heat exchanger is arranged at the front end of the galvanic pile, and the heat end of the heat exchanger is electricityStacking product gas, and the cold end of the reactor is raw material gas. Because the electric pile works under the condition of low pressure and the pressure loss of the common industrial shell-and-tube heat exchanger is too large, the shell-and-tube heat exchanger is selected to have the pressure loss only under the same heat transfer coefficient
The plate heat exchanger of (1).
The traditional plate heat exchanger applied to the field of hydrogen production by high-temperature water electrolysis has the following problems: first, the plate heat exchanger is generally used for liquid-liquid phase fluid, and the gas-gas phase heat exchange amount is limited, thereby resulting in low heat exchange efficiency; secondly, most of the traditional plate heat exchangers are applied to a low-temperature environment, and hydrogen corrosion is generated on heat exchange plates in a high-temperature hydrogen-rich water-containing environment, so that the heat exchangers are difficult to ensure long-term stable work; thirdly, the temperature difference of the heat exchanger is very large, and the traditional heat exchanger is difficult to meet the design requirement.
Disclosure of Invention
In order to solve the problems that the traditional heat exchanger in the prior art is difficult to be used for gas-gas phase heat exchange and the like, the invention provides a plate type heat exchanger for high-temperature hydrogen-rich water-containing gas and application thereof.
According to one aspect of the invention, the plate heat exchanger for the high-temperature hydrogen-rich water-containing gas comprises a plurality of metal plates, wherein the metal plates are herringbone corrugated plates with the thickness of 0.3mm-0.6mm, adjacent metal plates are fully attached and overlapped at 180 degrees to form alternately distributed cold and hot flow channels and exchange heat through the metal plates, the metal plates are nickel-based alloy plates, and the adjacent metal plates are welded through nickel foil brazing filler metal.
Preferably, the nickel-based Alloy plate is provided by Alloy625, incoloy800H, Hastelloy C276, Hastelloy B-2, or Monel 400.
Preferably, the inclination angle of the corrugations of the metal sheet is 30-80 degrees, the pitch of the corrugations is 5-15 mm, and the height of the corrugations is 1.8-2.4 mm. More preferably, the metal sheets have a corrugation pitch of 8mm to 10 mm.
Preferably, the metal sheet is a rectangular plate, and the middle line of the wide side of the metal sheet is a concave-convex boundary line.
Preferably, the metal sheet is a rectangular plate with a width of 70mm-300mm and a length of 150mm-535 mm. More preferably, the width of the metal sheet is 75mm to 280mm, for example 112 mm. More preferably the length of the sheet of metal is 155mm to 520mm, for example 296 mm.
Preferably, the number of metal sheets is between 7 and 61. More preferably, the number of metal sheets is between 39 and 56.
Preferably, four corner holes with the diameter of 7mm-70mm are symmetrically distributed on the metal plate. More preferably, the diameter of the corner holes is between 12.9mm and 63.5mm, for example 25.6 mm.
Preferably, the plate heat exchanger further comprises an upper end plate and a lower end plate, and the overlapped metal plate is clamped between the upper end plate and the lower end plate.
Preferably, the plate heat exchanger provides a Z-shaped flow channel or a U-shaped flow channel.
According to another aspect of the invention, there is provided a use of the plate heat exchanger described above, which comprises passing hot fluid and cold fluid, each having an inlet pressure of between 0.1mpa and 0.2mpa (where a represents absolute pressure), into the plate heat exchanger for heat exchange, wherein the hot fluid and/or the cold fluid is a high temperature hydrogen-rich aqueous gas.
Preferably, the intake pressure is between 0.105MPaA and 0.18 MPaA. More preferably, the inlet pressure is between 0.115MPaA and 0.13MPaA, for example 0.12 MPaA.
Preferably, the hot fluid has a temperature of 500 ℃ to 1000 ℃ and the cold fluid has a temperature of 20 ℃ to 300 ℃. More preferably, the hot fluid has a temperature of 800 ℃ to 850 ℃ and the cold fluid has a temperature of 25 ℃ to 170 ℃, for example 130 ℃.
According to the plate heat exchanger for the high-temperature hydrogen-rich water-containing gas, disclosed by the invention, high-temperature heat can be effectively recycled, the aim of efficiently and comprehensively utilizing heat is fulfilled, and the plate heat exchanger can work in a high-temperature low-resistance hydrogen-rich water-containing environment. Specifically, the plate heat exchanger disclosed by the invention has the advantages that the plate heat exchanger is enabled to enhance the turbulence effect through the integral structure of the corrugated design, the material and the welding process of the metal plate, can run for a long time in an environment with large temperature difference, and is not easy to scale in the process, so that the fouling thermal resistance is greatly reduced, the heat transfer resistance is reduced, and particularly, the plate heat exchanger can run for a long time at a high-temperature hydrogen-rich environment. The plate heat exchanger is applied to the environment of high-temperature hydrogen-rich water-containing gas, such as SOEC and SOFC, can preliminarily preheat the raw material gas of the galvanic pile, and the inlet pressure is near normal pressure.
Drawings
FIG. 1 is a general schematic view of a plate heat exchanger for high temperature hydrogen-rich aqueous gas according to a preferred embodiment of the invention, wherein the plate heat exchanger provides Z-shaped flow channels;
FIG. 2 is a schematic view of the upper endplate of FIG. 1;
FIG. 3 is a schematic view of the lower end plate of FIG. 1;
FIG. 4 is a schematic view of the metal sheet of FIG. 1;
FIG. 5 is a schematic view of the stacking of the metal sheets of FIG. 4;
FIG. 6 is a partial exploded view of FIG. 1;
FIG. 7 is a partial exploded view of the cross-flow mode of FIG. 1;
fig. 8 is a partial exploded view of a plate heat exchanger for high temperature hydrogen-rich aqueous gas according to another preferred embodiment of the present invention, wherein the plate heat exchanger provides U-shaped flow channels.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a plate heat exchanger for high temperature hydrogen-rich aqueous gas according to a preferred embodiment of the present invention comprises an upper end plate 1, a lower end plate 2 and several metal sheets 31, 32, 33, wherein the metal sheets 31, 32, 33 are sandwiched between the upper end plate 1 and the lower end plate 2 on top of each other.
Referring to fig. 2, the upper end plate 1 has a hot fluid inlet 11 and a cold fluid outlet 12 which extend upward by 25mm to 30mm, respectively.
Referring to fig. 3, the lower end plate 2 has a cold fluid inlet 21 and a hot fluid outlet 22, which extend downward by 25mm to 30mm, respectively.
Referring to fig. 4, the metal plates 31, 32, 33 are herringbone corrugated plates, and four symmetrically distributed corner holes with a diameter of 7mm to 70mm are aligned with the hot and cold fluid inlets 11, 21 and the cold and hot fluid outlets 12, 22 of the upper and lower end plates 1, 2, respectively.
Referring to fig. 4 and 5, the sheet metal plates 31, 32, 33 have an inclination of corrugations of 30 ° to 80 ° (e.g., 60 °), a pitch of the corrugations of 5mm to 15mm, a height of the corrugations of 1.8mm to 2.4mm (e.g., 2mm), a thickness of 0.3mm to 0.6mm (e.g., 0.4mm), a width of 70mm to 300mm, and a length of 150mm to 535mm, and have concavo-convex dividing lines at center lines of wide sides thereof except for the corrugated portion. According to the design of the corrugated inclination angle, the corrugated interval, the plate thickness and the plate size of the plate heat exchanger, under the condition that the Reynolds number is not changed, the turbulence intensity is at least 2.4 times of that of a flat plate heat exchanger without any corrugation through calculation, the turbulence degree of fluid is obviously improved, so that the heat transfer effect of the heat exchanger is enhanced, the heat exchange efficiency can reach more than 97%, and the performance of the plate heat exchanger in a gas-gas phase is greatly improved.
Referring to fig. 6, a first hot fluid flow channel is formed between the upper end plate 1 and the first metal plate 31, a first cold fluid flow channel is formed between the first metal plate 31 and the second metal plate 32, a second hot fluid flow channel … … is formed between the second metal plate 32 and the third metal plate 33, and so on until a last cold fluid flow channel is formed between the last metal plate and the lower end plate 2. In fig. 6, for clarity of the drawing, the other metal sheets are omitted between the third metal sheet 33 and the lower end plate 2. In practice, the number of metal sheets 33 between the upper end plate 1 and the lower end plate 2 is preferably between 7 and 61. In particular, if there are less than seven metal plates 31, 32, 33, the pressure drop will be relatively large even if the heat exchange temperature is satisfied.
For the whole plate heat exchanger, the adjacent metal plates 31, 32 and 33 are overlapped in a 180-degree full-lamination mode, cold and hot flow channels are alternately distributed, cold fluid and hot fluid respectively flow along the grooves between the plates on the two sides of the metal plates 31, 32 and 33, and heat is exchanged through the metal plates 31, 32 and 33. Obviously, the order of cold and hot fluids may be interchanged. In addition, the heat exchanger with Z-shaped flow channels can be replaced by a heat exchanger with U-shaped flow channels, as shown in FIG. 7. In addition, the plate heat exchanger does not have specific requirements on interface materials of upstream and downstream equipment, and the material selection only needs to meet the setting under the normal working environment.
In contrast to conventional sheets formed of stainless steel, titanium alloys, copper alloys, aluminum alloys, and the like, the metal sheets 31, 32, 33 of the present invention are nickel-based Alloy sheets having high temperature hydrogen corrosion resistance properties, including but not limited to those provided by Alloy625, incoloy800H, Hastelloy C276, Hastelloy B-2, and Monel 400. It will be appreciated that the nickel-base alloy plate according to the invention is considerably cheaper than other high-temperature alloy plates, and the production costs can be substantially a fifth less expensive.
The plate heat exchanger according to the invention is a brazed plate heat exchanger, and nickel foil sheets with the shape and size completely the same as that of the plates are stacked between the adjacent metal plates 31, 32 and 33 to be used as brazing filler metal, and the brazing is carried out at 850-1200 ℃, preferably at 1100-1250 ℃.
At present, the commercial development of the SOEC and the SOFC tends to modular integration, so strict requirements are put forward on the volume of equipment, the plate heat exchanger has the advantages of small occupied area and compact structure through the structural design of the plate heat exchanger, the market requirements are met, particularly, in order to resist the application environment of the SOEC and the SOFC, the inventor of the application unexpectedly finds that the heat exchange effect can be enhanced to maximize the heat utilization rate and remarkably reduce the cost on the premise of high-temperature hydrogen corrosion resistance by combining a nickel-based alloy plate with the thickness of 0.3mm-0.6mm in a brazing mode through a large number of materials and processes, and the plate heat exchanger can normally operate under the working condition that the inlet pressure is close to normal pressure, so that the plate heat exchanger can stably work under the conditions of high temperature, low pressure, hydrogen enrichment and water containing. Compared with the prior art that the requirement of the plate heat exchanger on the inlet pressure is more than 1 kilogram of gauge pressure, the invention provides the application of the plate heat exchanger when the inlet pressure is close to the normal pressure (between 0.1MPaA and 0.2 MPaA) for the first time, and has pioneering significance. Specifically, the plate heat exchanger according to the invention can be applied to a low temperature environment at 400 ℃, particularly to a high temperature environment at 550 ℃ to 1000 ℃, with the hot side inlet temperature ranging from 500 ℃ to 1000 ℃ and the cold side inlet temperature ranging from 20 ℃ to 300 ℃.
Example 1
Application of the plate heat exchanger with Z-shaped flow channels of FIGS. 1-6 to raw material gas H of Solid Oxide Electrolytic Cell (SOEC)2/H2Preliminary heating of the O side. The plate heat exchanger is composed of 39 plates, Alloy625 is selected as a material, nickel foil is used as brazing filler metal, the inclination angle of the corrugation is 60 degrees, the interval of the corrugation is 10mm, the height of the corrugation is 1.8mm, the thickness of each metal plate is 0.4mm, the width of each metal plate is 112mm, and the length of each metal plate is 296 mm. The corner hole diameter was 25.6mm (1 "inch).
The mixed gas of the raw material gas hydrogen and the steam at the temperature of 130 ℃ is prepared by mixing the raw material gas hydrogen and the steam in a ratio of 1: 9 into the cold fluid inlet 21 at a flow rate of 10.94kg/h and a feed pressure of 0.115 MPaA. The mixed gas of hydrogen and steam of the galvanic pile product gas with the temperature of 800 ℃ enters a hot fluid inlet 11, the flow rate is 1.34kg/h, and the inlet pressure is 0.105 MPaA. The two gases exchange heat in two adjacent runners of the plate heat exchanger, the raw material gas flows out of the cold fluid outlet 12, the product gas flows out of the hot fluid outlet 22, the raw material gas can be heated to 670 ℃, and the product gas is cooled to 200 ℃.
The process parameters of the cold and hot fluid are shown in the following table:
the results of the thermodynamic calculations are shown in the following table:
the production heat exchanger costs are shown in the following table:
the turbulent kinetic energy results are shown in the following table:
| item | Example 1 | Flat plate type heat exchanger |
| Turbulent kinetic energy (m)2/s2) | 827 | 101 |
Example 2
The plate heat exchanger with the U-shaped flow channel in the figure 7 is applied to primary heating of a Solid Oxide Fuel Cell (SOFC) raw material gas on a hydrogen side. The plate heat exchanger is composed of 56 plates, wherein incoloy800H is selected as a material, nickel foil is used as brazing filler metal, the inclination angle of the corrugation is 30 degrees, the interval of the corrugation is 8mm, the height of the corrugation is 2mm, the thickness of each metal plate is 0.3mm, the width of each metal plate is 75mm, the length of each metal plate is 155mm, and the diameter of each angular hole is 12.9 mm.
The raw material gas hydrogen with the temperature of 25 ℃ enters a cold fluid inlet 21', the flow rate is 2.75kg/h, and the inlet pressure is 0.18 MPa. The gas-water-steam-hydrogen mixed gas of the galvanic pile product at 850 ℃ enters a hot fluid inlet 11', the flow rate is 12.6kg/h, and the gas inlet pressure is 0.12 MPa. The two gases exchange heat in two adjacent runners of the plate heat exchanger, the raw material gas flows out from the cold fluid outlet 12 ', the product gas flows out from the hot fluid outlet 22', the raw material gas can be heated to 680 ℃, and the product gas is cooled to 200 ℃.
The process parameters of the cold and hot fluid are shown in the following table:
the results of the thermodynamic calculations are shown in the following table:
the turbulent kinetic energy results are shown in the following table:
| item | Example 2 | Flat plate type heat exchanger |
| Turbulent kinetic energy (m)2/s2) | 1450 | 307 |
Example 3
The plate heat exchanger with the Z-shaped flow passage in the figure 7 is applied to a high-temperature electrolytic water hydrogen production device (SOEC) raw material gas of H2/H2Preliminary heating of the O side. The plate heat exchanger is composed of 7 plates, Monel 400 is selected as a material, nickel foil is used as brazing filler metal, the corrugated inclination angle is 80 degrees, the corrugated interval is 15mm, the corrugated height is 2.4mm, the thickness of each plate is 0.6mm, the width of each plate is 280mm, and the length of each plate is 520 mm. The diameter of the corner hole is 35.25 mm.
The mixed gas of hydrogen and steam of the raw material gas at 170 ℃ is prepared from the following components in percentage by weight: 7 into a cold fluid inlet 21 at a flow rate of 3.66kg/h and an inlet pressure of 0.13 MPa. The hydrogen-steam mixed gas of the galvanic pile product gas with the temperature of 800 ℃ enters a hot fluid inlet 11, the flow rate is 1.47kg/h, and the inlet pressure is 0.12 MPa. The two gases exchange heat in two adjacent runners of the plate heat exchanger, the raw material gas flows out of the cold fluid outlet 12, the product gas flows out of the hot fluid outlet 22, namely, the raw material gas can be heated to 670 ℃, and the product gas is cooled to 285 ℃.
The process parameters of the cold and hot fluid are shown in the following table:
| hot side | Cold side | |
| Inlet temperature (. degree.C.) | t′1＝800 | t′2＝170 |
| Outlet temperature (. degree.C.) | t″1＝285 | t″2＝670 |
| Mass flow (kg/h) | qm1＝3.66 | qm2＝1.47 |
| Inlet density (kg/m)3) | ρ′1＝0.0282 | ρ′2＝0.1879 |
| Outlet density (kg/m)3) | ρ″1＝0.0538 | ρ″2＝0.0875 |
| Inlet specific heat capacity (J/kg. K) | C′p1＝14421 | C′p2＝57317 |
| Specific heat capacity at outlet (J/kg. K) | C″p1＝14028 | C″p2＝60059 |
| Import dynamic viscosity (cp) | μ′1＝0.0214 | μ′2＝0.0131 |
| Outlet dynamic viscosity (cp) | μ″1＝0.0138 | μ″2＝0.0265 |
| Inlet thermal conductivity (W/(m.K)) | λ′1＝0.4613 | λ′2＝0.1650 |
| Outlet coefficient of thermal conductivity (W/(m.K)) | λ″1＝0.2831 | λ″2＝0.3065 |
The results of the thermodynamic calculations are shown in the following table:
the above embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and various changes may be made in the above embodiments of the present invention. All simple and equivalent changes and modifications made according to the claims and the content of the specification of the present application fall within the scope of the claims of the present patent application. The invention has not been described in detail in order to avoid obscuring the invention.
Claims (10)
1. A plate heat exchanger for high-temperature hydrogen-rich water-containing gas is characterized by comprising a plurality of metal plates, wherein the metal plates are herringbone corrugated plates with the thickness of 0.3-0.6 mm, adjacent metal plates are fully laminated and overlapped at 180 degrees to form alternately distributed cold and hot flow channels and exchange heat through the metal plates, the metal plates are nickel-based alloy plates, and the adjacent metal plates are welded through nickel foil brazing filler metal.
2. A plate heat exchanger according to claim 1, wherein the nickel based Alloy plate is provided by Alloy625, incoloy800H, Hastelloy C276, Hastelloy B-2 or Monel 400.
3. A plate heat exchanger according to claim 1, wherein the angle of inclination of the corrugations of the metal sheet is 30 ° -80 °, the pitch of the corrugations is 5mm-15mm, and the height of the corrugations is 1.8mm-2.4 mm.
4. A plate heat exchanger according to claim 1, wherein the metal sheets are rectangular plates, the width of the metal sheets being 70-300 mm and the length being 150-535 mm.
5. A plate heat exchanger according to claim 1, wherein the number of metal sheets is between 7 and 61.
6. A plate heat exchanger according to claim 1, further comprising an upper end plate and a lower end plate, the abutting overlapping metal sheets being sandwiched between the upper end plate and the lower end plate.
7. A plate heat exchanger according to claim 6, wherein the plate heat exchanger provides Z-shaped flow channels or U-shaped flow channels.
8. Use of a plate heat exchanger according to any one of claims 1-7, characterized in that the use comprises passing hot and cold fluid having inlet pressures between 0.1 and 0.2MPaA, respectively, into the plate heat exchanger for heat exchange, wherein the hot and/or cold fluid is a high temperature hydrogen rich aqueous gas.
9. Use according to claim 8, wherein the inlet air pressure is between 0.105MPaA and 0.18 MPaA.
10. Use according to claim 8, wherein the hot fluid has a temperature of 500 ℃ to 1000 ℃ and the cold fluid has a temperature of 20 ℃ to 300 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011544877.9A CN112577343A (en) | 2020-12-23 | 2020-12-23 | Plate heat exchanger for high-temperature hydrogen-rich water-containing gas and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011544877.9A CN112577343A (en) | 2020-12-23 | 2020-12-23 | Plate heat exchanger for high-temperature hydrogen-rich water-containing gas and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112577343A true CN112577343A (en) | 2021-03-30 |
Family
ID=75139299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011544877.9A Pending CN112577343A (en) | 2020-12-23 | 2020-12-23 | Plate heat exchanger for high-temperature hydrogen-rich water-containing gas and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112577343A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102308177A (en) * | 2009-02-04 | 2012-01-04 | 阿尔法拉瓦尔股份有限公司 | Plate heat exchanger |
| CN202770278U (en) * | 2012-08-29 | 2013-03-06 | 江苏宝得换热设备有限公司 | Heat exchanger |
| CN105555452A (en) * | 2013-09-26 | 2016-05-04 | 阿尔法拉瓦尔股份有限公司 | Method for joining metal parts |
| CN109822248A (en) * | 2019-02-28 | 2019-05-31 | 华中科技大学 | A kind of hot isostatic pressing for thin-wall construction-soldering combined shaping method |
| CN214333471U (en) * | 2020-12-23 | 2021-10-01 | 中国科学院上海应用物理研究所 | Plate heat exchanger for high-temperature hydrogen-rich water-containing gas |
-
2020
- 2020-12-23 CN CN202011544877.9A patent/CN112577343A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102308177A (en) * | 2009-02-04 | 2012-01-04 | 阿尔法拉瓦尔股份有限公司 | Plate heat exchanger |
| CN202770278U (en) * | 2012-08-29 | 2013-03-06 | 江苏宝得换热设备有限公司 | Heat exchanger |
| CN105555452A (en) * | 2013-09-26 | 2016-05-04 | 阿尔法拉瓦尔股份有限公司 | Method for joining metal parts |
| CN109822248A (en) * | 2019-02-28 | 2019-05-31 | 华中科技大学 | A kind of hot isostatic pressing for thin-wall construction-soldering combined shaping method |
| CN214333471U (en) * | 2020-12-23 | 2021-10-01 | 中国科学院上海应用物理研究所 | Plate heat exchanger for high-temperature hydrogen-rich water-containing gas |
Non-Patent Citations (4)
| Title |
|---|
| 余建祖等: "《换热器原理与设计 （第2版）》", 31 October 2019, 北京航空航天大学出版社, pages: 120 * |
| 吴有生等: "《第十一届全国水动力学学术会议暨第二十四届全国水动力学研讨会并周培源诞辰110周年纪念大会文集 下册》", 31 August 2012, 海洋出版社, pages: 724 - 725 * |
| 应宗荣: "《材料成形原理与工艺》", 31 January 2015, 哈尔滨工业大学出版社, pages: 110 - 111 * |
| 马庆芳等: "《节能技术的热工理论基础》", 31 August 1989, 宇航出版社, pages: 175 - 176 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU754899B2 (en) | Sheet metal bipolar plate design for polymer electrolyte membrane fuel cells | |
| CN1339181A (en) | Fuel cell stacks for ultra-high efficiency power systems | |
| US10756357B2 (en) | Bipolar plate with coolant flow channel | |
| US20050064270A1 (en) | Fuel cell bipolar separator plate | |
| CN111059934A (en) | Composite construction printed circuit board formula heat exchanger core | |
| US20240055636A1 (en) | Anode and/or cathode pan assemblies in an electrochemical cell, and methods to use and manufacture thereof | |
| EP4012070A1 (en) | Heat exchanger | |
| US12046786B2 (en) | High temperature fuel cell system with a laminated bipolar plate | |
| US20230025359A1 (en) | Single corrugated fuel cell and cell stack | |
| CN214333471U (en) | Plate heat exchanger for high-temperature hydrogen-rich water-containing gas | |
| CN109323607A (en) | A kind of ultra-compact heat-exchangers of the plate type of honeycomb type | |
| CN112577343A (en) | Plate heat exchanger for high-temperature hydrogen-rich water-containing gas and application thereof | |
| CN110514041B (en) | Plate heat exchanger core for nuclear power system | |
| JP2023540552A (en) | Heat exchanger | |
| CN108917438B (en) | High-temperature high-pressure compact heat exchanger | |
| CN110620239A (en) | Single-layer bipolar plate, electric pile and system of fuel cell | |
| US20110209859A1 (en) | Recuperative Heat Exchanger, Fuel Cell System Including Recuperative Heat Exchanger, and Method of Operating Same | |
| CN213902021U (en) | Modular air-smoke heat exchanger | |
| CN112993304B (en) | Gradient corrugated flow field structure | |
| EP4198437B1 (en) | Multipath plate-and-shell heat exchanger | |
| US20150357664A1 (en) | Plate type fuel reformer of fuel cell | |
| CN220553472U (en) | Pile stack structure of solid oxide fuel cell system | |
| CN219474362U (en) | Heat exchanger suitable for photo-thermal power generation system | |
| CN217536181U (en) | SOEC hydrogen production and heat supply integrated device | |
| CN221687563U (en) | Heat exchange device and fuel cell system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |