CN216667672U - Electric pile heat supply circulating device of SOFC solid oxide cell system - Google Patents
Electric pile heat supply circulating device of SOFC solid oxide cell system Download PDFInfo
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- CN216667672U CN216667672U CN202123240498.3U CN202123240498U CN216667672U CN 216667672 U CN216667672 U CN 216667672U CN 202123240498 U CN202123240498 U CN 202123240498U CN 216667672 U CN216667672 U CN 216667672U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses a galvanic pile heat supply circulating device of an SOFC solid oxide cell system, which comprises a burner, an air inlet flue, a primary parallel heat exchanger, a secondary parallel heat exchanger and a discharge flue, wherein the burner, the air inlet flue, the primary parallel heat exchanger, the secondary parallel heat exchanger and the discharge flue are sequentially arranged from bottom to top; a compressed air path heat exchanger and a three-stage parallel heat exchanger are respectively arranged on two sides of the first-stage parallel heat exchanger; the whole device is fixed through a bracket; the burner is arranged in the bracket through a flange, and the air inlet flue is connected to the top of the bracket through a flange and communicated with the burner; the inlet flue, the first-stage parallel heat exchanger, the second-stage parallel heat exchanger and the discharge flue are connected in sequence through flanges; the compressed air path heat exchanger, the three-stage parallel heat exchanger and the first-stage parallel heat exchanger are all connected in a clamping sleeve manner; the second-stage parallel heat exchanger and the third-stage parallel heat exchanger are connected in a clamping sleeve mode.
Description
Technical Field
The utility model belongs to the field of hydrogen power generation and new energy technology power generation, and particularly relates to a heat supply circulating device for a cell stack of an SOFC solid oxide fuel cell system.
Background
The heat supply device of the SOFC solid oxide cell system galvanic pile is generally composed of a combustor and a heat exchanger. It is in structural design, and galvanic pile fuel outlet and air outlet are mostly direct evacuation, and this kind of structure is comparatively single, can't utilize self system with galvanic pile exhaust high temperature air and fuel recovery, and heat exchange efficiency is low, the fuel consumes great, and the whole efficiency of system is low.
Therefore, in the conventional SOFC solid fuel cell system, the natural gas fuel is insufficiently combusted, the combustion efficiency is low, and the heat recovery and utilization rate is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of the prior art and provides a pile heat supply circulating device of an SOFC solid oxide cell system, which makes full use of waste heat, so as to improve the efficiency of a pile heat supply system.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a pile heat supply circulating device of an SOFC solid oxide cell system comprises a burner, an air inlet flue, a primary parallel heat exchanger, a secondary parallel heat exchanger and a discharge flue which are arranged from bottom to top in sequence; a compressed air path heat exchanger and a three-stage parallel heat exchanger are respectively arranged on two sides of the first-stage parallel heat exchanger; the whole device is fixed through a bracket;
the burner is arranged in the bracket through a flange, and the air inlet flue is connected to the top of the bracket through a flange and communicated with the burner; the inlet flue, the first-stage parallel heat exchanger, the second-stage parallel heat exchanger and the discharge flue are sequentially connected through flanges, and the compressed air path heat exchanger, the third-stage parallel heat exchanger and the first-stage parallel heat exchanger are connected in a clamping sleeve manner; the second-stage parallel heat exchanger and the third-stage parallel heat exchanger are connected in a clamping sleeve mode.
Specifically, the bottom of the compressed air path heat exchanger is provided with a stack high-temperature air outlet N2, the top of the compressed air path heat exchanger is provided with a stack high-temperature air outlet N3, the side of the compressed air path heat exchanger is provided with a compressed air inlet N4 and a compressed air outlet N5, and the compressed air path heat exchanger is communicated with the first-stage parallel heat exchanger through a compressed air outlet N5.
Specifically, one side of the second-stage parallel heat exchanger is provided with a reformed gas inlet N8, the other side of the second-stage parallel heat exchanger is provided with a reformed gas outlet N9, and the second-stage parallel heat exchanger is communicated with the third-stage parallel heat exchanger through a reformed gas outlet N9.
Specifically, the top of the three-stage parallel heat exchanger is provided with a reformed gas inlet N10 after primary heat exchange, the bottom of the three-stage parallel heat exchanger is provided with a reformed gas outlet N11 after primary heat exchange, the side of the three-stage parallel heat exchanger is provided with a compressed air inlet N6 after primary heat exchange and a compressed air outlet N7 after primary heat exchange, the reformed gas inlet N10 after primary heat exchange is connected with the reformed gas outlet N9, and the compressed air inlet N6 after primary heat exchange is communicated with the one-stage parallel heat exchanger.
Specifically, one side of the first-stage parallel heat exchanger is provided with a cooling water inlet pipe, and the other side of the first-stage parallel heat exchanger is provided with a cooling water outlet pipe.
Furthermore, the combustor is connected with the galvanic pile through a fuel tail gas inlet N0, and fuel tail gas discharged after the galvanic pile reaction enters the combustor through an N0 port for secondary combustion.
Furthermore, a heat exchange inlet and a heat exchange outlet of each heat exchanger are respectively provided with a temperature measuring point N1.
Has the advantages that:
the electric pile heat supply circulating device exchanges heat through the multi-stage heat exchanger, so that the heat exchange efficiency is improved; high-temperature air and high-temperature fuel gas supplied to the galvanic pile, and fuel tail gas discharged after the galvanic pile reaction enter a burner through an N0 port for secondary combustion, so that the utilization rate of the fuel is improved; the discharged high-temperature air is not directly discharged into the air, but enters the compressed air path heat exchanger through the N2 port, so that the heat supply is preheated before the compressed air enters the three-stage parallel heat exchanger, and the waste heat is recycled and fully utilized. The fuel is saved, the environmental pollution is reduced, the waste heat of high-temperature air is fully utilized, and the efficiency of the whole electric pile heat supply system device is improved. The device has the advantages of simple and compact structure, convenient installation, strong stability, convenient measurement of the temperature of each part, separation of the device and the galvanic pile, and convenient transportation.
Drawings
The foregoing and/or other advantages of the utility model will become more apparent from the following detailed description of the utility model when taken in conjunction with the accompanying drawings.
Fig. 1 is a front view of the SOFC solid oxide cell system stack heat cycle apparatus.
Fig. 2 is a left side view of the SOFC solid oxide cell system stack heat cycle device.
Wherein each reference numeral represents:
1-compressed air path heat exchanger;
2-three-stage parallel heat exchangers;
3, entering a flue;
4-a cooling water inlet pipe;
5-first-stage parallel heat exchangers;
6-two-stage parallel heat exchanger;
7-a discharge flue;
8-cooling water outlet pipe;
9-a scaffold;
10-a burner;
n1-temperature measurement Point;
n2-high temperature air inlet for stack exhaust;
n3-outlet for high temperature air discharged from the pile;
n4-compressed air inlet;
n5-compressed air outlet;
n6-compressed air inlet after primary heat exchange;
n7-compressed air outlet after primary heat exchange;
n8-reformate gas inlet;
n9 — reformate gas outlet;
n10-reformed gas inlet after primary heat exchange;
n11-reformate gas outlet after primary heat exchange.
Detailed Description
The utility model will be better understood from the following examples.
The structures, proportions, and dimensions shown in the drawings and described in the specification are for understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined in the claims, and are not essential to the skilled in the art. In addition, the terms "upper", "lower", "front", "rear" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.
As shown in fig. 1 and fig. 2, the heat supply circulating device of the cell stack of the SOFC solid oxide cell system includes a burner 10, an inlet flue 3, a primary parallel heat exchanger 5, a secondary parallel heat exchanger 6 and a discharge flue 7, which are arranged in sequence from bottom to top; a compressed air path heat exchanger 1 and a three-stage parallel heat exchanger 2 are respectively arranged on two sides of the first-stage parallel heat exchanger 5; the whole device is fixed by a bracket 9.
The burner 10 is arranged in the bracket 9 through a flange, and the flue inlet 3 is connected to the top of the bracket 9 through a flange and communicated with the burner 10; the inlet flue 3, the primary parallel heat exchanger 5, the secondary parallel heat exchanger 6 and the exhaust flue 7 are sequentially connected through flanges, and the compressed air path heat exchanger 1, the tertiary parallel heat exchanger 2 and the primary parallel heat exchanger 5 are connected in a clamping sleeve manner; the second-stage parallel heat exchanger 6 is connected with the third-stage parallel heat exchanger 2 in a clamping sleeve manner.
The bottom of the compressed air path heat exchanger 1 is provided with a galvanic pile discharged high-temperature air inlet N2, the top of the compressed air path heat exchanger is provided with a galvanic pile discharged high-temperature air outlet N3, the side of the compressed air path heat exchanger is provided with a compressed air inlet N4 and a compressed air outlet N5, and the compressed air path heat exchanger is communicated with the first-stage parallel heat exchanger 5 through a compressed air outlet N5. High-temperature air is discharged from an air outlet of the electric pile, enters through an air inlet N2 for discharging the high-temperature air from the electric pile, and is discharged through an air outlet N3 for discharging the high-temperature air from the electric pile; compressed air enters through a compressed air inlet N4 and exits through a compressed air outlet N5. The high-temperature air and the compressed air exchange heat in the compressed air path heat exchanger 1, and the compressed air enters the first-stage parallel heat exchanger 5 after being heated.
One side of the second-stage parallel heat exchanger 6 is provided with a reformed gas inlet N8, and the other side is provided with a reformed gas outlet N9 and is communicated with the third-stage parallel heat exchanger 2 through a reformed gas outlet N9. The top of the three-stage parallel heat exchanger 2 is provided with a reformed gas inlet N10 after primary heat exchange, the bottom of the three-stage parallel heat exchanger is provided with a reformed gas outlet N11 after primary heat exchange, the side of the three-stage parallel heat exchanger is provided with a compressed air inlet N6 after primary heat exchange and a compressed air outlet N7 after primary heat exchange, the three-stage parallel heat exchanger is connected with the reformed gas outlet N9 through a reformed gas inlet N10 after primary heat exchange, and the three-stage parallel heat exchanger is communicated with the one-stage parallel heat exchanger 5 through a compressed air inlet N6 after primary heat exchange. The reformed gas enters from a reformed gas inlet N8, and exits from a reformed gas outlet N9, and heat exchange and temperature rise are carried out in the secondary parallel heat exchanger 6. The heated reformed gas enters through a reformed gas inlet N10 after primary heat exchange, and exits through a reformed gas outlet N11 after primary heat exchange, exchanges heat in the heat exchanger three-stage parallel heat exchanger 2, and then is introduced into the electric pile.
The heat of the heat area in the first-stage parallel heat exchanger 5 is from combustion of a burner, and when the temperature of the compressed air in the air pipeline is raised through heat exchange in the first-stage parallel heat exchanger 5, the compressed air enters the heat exchanger for secondary heat exchange and temperature rise, wherein the route is from a compressed air outlet N5 to a compressed air inlet N6 after primary heat exchange.
One side of one-level parallel heat exchanger 5 is equipped with cooling water inlet tube 4, and the opposite side is equipped with cooling water outlet pipe 8, and cooling water gets into from cooling water inlet tube 4, and cooling water outlet pipe 8 flows out, and its purpose is that the nearly flame side of one-level parallel heat exchanger 5 arranges the coolant liquid passageway, prevents that the nearly flame of one-level parallel heat exchanger 5 from surveying because of burning under long-time high temperature, leads to sealing the fracture etc. and then improves the life of heat exchanger.
The burner 10 provides a heat source for the entire plant by burning natural gas. The combustor 10 is connected with the galvanic pile through a fuel tail gas inlet N0, and fuel tail gas discharged after the galvanic pile reaction enters the combustor 10 through an N0 port for secondary combustion.
The combustion engine enters the flue 3 after combustion. After the fuel of the whole system device is combusted, tail gas is discharged from the discharge flue 7.
And temperature measuring points N1 are respectively arranged at the heat exchange inlet and the heat exchange outlet of each heat exchanger for measuring the temperature of the heat exchange inlet and the heat exchange outlet of each heat exchanger.
In the pile heating cycle apparatus, N4 is an initial inlet of compressed air, and the compressed air is evacuated via N4 → N5 → heat exchanger 5 → N6 → N7 → pile → N2 → N3 → air. N8 is the initial inlet for reformed natural gas via N8 → heat exchanger 6 → N9 → N10 → N11 → electric pile → N0. Combustor → intake duct 3 → heat exchanger 5 → heat exchanger 6 → discharge duct 7.
It is noted that in the process of N5 → heat exchanger 5 → N6, the heat exchanger 5 raises the temperature of the compressed air, and the high temperature air is ready to enter the stack and then enters the heat exchanger 2 through the N6 inlet. And the reformed gas is heated after heat exchange in the heat exchanger 6, and enters the heat exchanger 2 through a port N10. The heated high-temperature compressed air and the high-temperature natural gas reformed gas meet in the heat exchanger 2 to exchange heat, so that the temperature difference of the two paths of gas is reduced, the two paths of gas react in the galvanic pile better, and the heat exchange efficiency and the reaction efficiency are improved.
High-temperature flue gas generated after combustion of fuel gas by the combustor 10 exchanges heat with the first-stage parallel heat exchanger 5 and then exchanges heat with the second-stage parallel heat exchanger 6, the high-temperature flue gas and the high-temperature air from the third-stage parallel heat exchanger 2 enter respective pipelines of the third-stage parallel heat exchanger 2 in front of the inlet of the galvanic pile together after heat exchange of the gas from the first-stage parallel heat exchanger and the second-stage heat exchanger is completed, and the high-temperature flue gas and the high-temperature air from the third-stage parallel heat exchanger 2 are supplied to the galvanic pile. The fuel tail gas discharged after the galvanic pile reaction enters the combustor through the N0 port for secondary combustion, so that the fuel combustion efficiency is improved; the discharged high-temperature air enters the compressed air path heat exchanger 1 through the N2 port, and the compressed air in the compressed air path heat exchanger 1 is heated, so that the heat of the high-temperature tail gas is fully utilized.
Therefore, the high-temperature fuel and the high-temperature air discharged from the outlet of the electric pile are recycled, so that the fuel is saved, the environmental pollution is reduced, the waste heat of the high-temperature air is fully utilized, and the efficiency of the whole electric pile heat supply system device is improved.
The utility model provides a thinking and a method for a heating circulation device of a cell stack of an SOFC solid oxide cell system, and a method and a way for realizing the technical scheme are many, the above description is only a preferred embodiment of the utility model, and it should be noted that, for a person skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the utility model, and the improvements and decorations should also be regarded as the protection scope of the utility model. All the components not specified in the present embodiment can be realized by the prior art.
Claims (7)
1. A pile heat supply circulating device of an SOFC solid oxide cell system is characterized by comprising a burner (10), an air inlet flue (3), a primary parallel heat exchanger (5), a secondary parallel heat exchanger (6) and a discharge flue (7) which are arranged from bottom to top in sequence; a compressed air path heat exchanger (1) and a three-stage parallel heat exchanger (2) are respectively arranged on two sides of the first-stage parallel heat exchanger (5); the whole device is fixed through a bracket (9);
the burner (10) is installed in the support (9) through a flange, and the flue inlet (3) is connected to the top of the support (9) through a flange and communicated with the burner (10); the inlet flue (3), the primary parallel heat exchanger (5), the secondary parallel heat exchanger (6) and the exhaust flue (7) are sequentially connected through flanges, and the compressed air path heat exchanger (1), the tertiary parallel heat exchanger (2) and the primary parallel heat exchanger (5) are connected in a clamping manner; the second-stage parallel heat exchanger (6) is connected with the third-stage parallel heat exchanger (2) in a clamping sleeve manner.
2. The SOFC solid oxide cell system pile heat supply circulating device as claimed in claim 1, wherein the bottom of the compressed air path heat exchanger (1) is provided with a pile high temperature air outlet N2, the top is provided with a pile high temperature air outlet N3, the side is provided with a compressed air inlet N4 and a compressed air outlet N5, and the compressed air outlet N5 is communicated with the primary parallel heat exchanger (5).
3. The SOFC solid oxide cell system stack heating cycle device according to claim 1, wherein the secondary parallel heat exchanger (6) is provided with a reformed gas inlet N8 on one side and a reformed gas outlet N9 on the other side, and is communicated with the tertiary parallel heat exchanger (2) through a reformed gas outlet N9.
4. The SOFC solid oxide cell system pile heat supply circulating device of claim 3, wherein the three-stage parallel heat exchanger (2) is provided with a reformed gas inlet N10 after primary heat exchange at the top, a reformed gas outlet N11 after primary heat exchange at the bottom, a compressed air inlet N6 after primary heat exchange and a compressed air outlet N7 after primary heat exchange at the side, and is connected with the reformed gas outlet N9 through a reformed gas inlet N10 after primary heat exchange, and is communicated with the one-stage parallel heat exchanger (5) through a compressed air inlet N6 after primary heat exchange.
5. The SOFC solid oxide cell system stack heating circulation device according to claim 1, wherein the primary parallel heat exchanger (5) is provided with a cooling water inlet pipe (4) on one side and a cooling water outlet pipe (8) on the other side.
6. The SOFC solid oxide cell system stack heat supply circulating device of claim 1, wherein the burner (10) is connected to the stack through a fuel off-gas inlet N0, and the fuel off-gas discharged after the stack reaction is introduced into the burner (10) through an N0 for secondary combustion.
7. The SOFC solid oxide cell system stack heat supply circulating device of claim 1, wherein the heat exchange inlet and outlet of each heat exchanger are respectively provided with a temperature measuring point N1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123240498.3U CN216667672U (en) | 2021-12-22 | 2021-12-22 | Electric pile heat supply circulating device of SOFC solid oxide cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123240498.3U CN216667672U (en) | 2021-12-22 | 2021-12-22 | Electric pile heat supply circulating device of SOFC solid oxide cell system |
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| Publication Number | Publication Date |
|---|---|
| CN216667672U true CN216667672U (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123240498.3U Active CN216667672U (en) | 2021-12-22 | 2021-12-22 | Electric pile heat supply circulating device of SOFC solid oxide cell system |
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2021
- 2021-12-22 CN CN202123240498.3U patent/CN216667672U/en active Active
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