CN218371760U - Fuel reformer for solid oxide fuel cell system - Google Patents

Abstract

The utility model provides a fuel reformer for a solid oxide fuel cell system, which comprises a reformed gas heating cavity, a raw material gas feeding cavity and a reformed gas outlet cavity; one end of the reformed gas heating cavity is communicated with the feed gas feeding cavity, and the other end of the reformed gas heating cavity is communicated with the reformed gas outlet cavity; the feed gas inlet channel is communicated with the feed gas feeding cavity; the reformed gas outlet channel is communicated with the reformed gas outlet cavity; a high-temperature flue gas passing area and a raw gas reforming channel are arranged in the reforming gas heating cavity; a catalyst for reforming reaction is arranged in the raw material gas reforming channel, and the raw material gas feeding cavity is communicated with the reformed gas outlet cavity through the raw material gas reforming channel; the high-temperature flue gas inlet channel, the high-temperature flue gas passing area and the high-temperature flue gas outlet channel are sequentially communicated so that high-temperature flue gas flows through the high-temperature flue gas passing area to exchange heat with the feed gas reforming channel; a baffling structure is arranged in the reformed gas heating cavity and used for prolonging the flow stroke of the high-temperature flue gas in the high-temperature flue gas passing area, and further improving the heat exchange efficiency.

Description

Fuel reformer for solid oxide fuel cell system

Technical Field

The utility model relates to a fuel cell technical field especially relates to a solid oxide fuel cell is fuel reformer for system.

Background

A Solid Oxide Fuel Cell (SOFC) is a device that can convert chemical energy in fuel into electrical energy and has an operating temperature of 500 to 1000 ℃. Due to the high working temperature, the SOFC can directly use the hydrocarbons converted from fossil energy and biomass energy as fuel, and efficiently convert chemical energy into electric energy through external or internal reforming reaction and electrochemical reaction in the electrode.

CN 216250809U describes a fuel reformer for solid state fuel cell system, which comprises a high temperature flue gas channel and a tail gas recovery channel, a raw gas inlet channel, a raw gas preheating cavity, a tube type raw gas reforming channel and a reformed gas heating cavity, and a reformed gas outlet channel. The fuel reformer for the solid fuel cell system preheats feed gas to reforming reaction temperature by high-temperature flue gas in the channels in an integrated manner, simultaneously provides heat required by reforming reaction for the feed gas reacted in the tubular reforming channels, and sufficiently heats reformed gas before the reformed gas flows out. The fuel reformer integrates the heat exchange and reforming functions, and the integrated design is favorable for reducing the volume of equipment and improving the heat exchange efficiency and the conversion rate of raw materials.

However, in the structure, the tube type raw material gas reforming channels are annularly distributed along the length direction of the reformer, two ends of each tube type raw material gas reforming channel are fixedly supported by virtue of a pair of reforming gas heating cavity tube plates which are oppositely arranged, and meanwhile, the high-temperature flue gas channel is arranged along the length direction of the reformer and penetrates through the middle part of the reforming gas heating cavity. Therefore, the flow path of the high-temperature flue gas in the high-temperature flue gas passing region is limited by the length of the reformer, so that the structure cannot achieve high heat exchange efficiency. Meanwhile, the high-temperature flue gas inlet channel is communicated with the reformed gas heating cavity tube plate, and the high-temperature flue gas inlet channel is communicated with the raw material gas preheating cavity tube plate, so that an area in the reformed gas heating cavity cannot be provided with the tube type raw material gas reforming channel, the inner space of the reformed gas heating cavity cannot be fully utilized, and the miniaturization of the reformer is not facilitated. In addition, the reformer adopts an integrated design, and the feed gas preheating cavity end plate is fixedly connected with the feed gas preheating cavity tube plate, so that the catalyst cannot be replaced when the whole catalyst is inactivated, and the service life of the whole reformer is short.

Disclosure of Invention

The purpose of the invention is as follows: the utility model aims to solve the technical problem that to prior art not enough, provide a solid oxide fuel cell is fuel reformer for system, overcome the high temperature flue gas and passed through the restriction that the flow stroke in the region received reformer length, the inner space in reforming gas heating chamber can't obtain make full use of, inconvenient change catalyst, the short defect of life in the high temperature flue gas.

In order to solve the technical problem, the utility model discloses a fuel reformer for a solid oxide fuel cell system, which comprises a high-temperature flue gas inlet channel, a high-temperature flue gas outlet channel, a reformed gas heating cavity, a raw material gas feeding cavity, a raw material gas inlet channel, a reformed gas outlet cavity and a reformed gas outlet channel; one end of the reformed gas heating cavity is communicated with the feed gas feeding cavity, and the other end of the reformed gas heating cavity is communicated with the reformed gas outlet cavity; the feed gas inlet channel is communicated with the feed gas feeding cavity; the reformed gas outlet channel is communicated with the reformed gas outlet cavity; a high-temperature flue gas passing area and a raw gas reforming channel are arranged in the reforming gas heating cavity; a catalyst for reforming reaction is arranged in the raw material gas reforming channel, and the raw material gas feeding cavity is communicated with the reformed gas outlet cavity through the raw material gas reforming channel; the high-temperature flue gas inlet channel, the high-temperature flue gas passing area and the high-temperature flue gas outlet channel are sequentially communicated so that high-temperature flue gas flows through the high-temperature flue gas passing area to exchange heat with the feed gas reforming channel; the reformed gas heating cavity is provided with a baffling structure for prolonging the flow stroke of the high-temperature flue gas in the high-temperature flue gas passing area.

Optionally, the baffle structure is more than two baffles which are alternately arranged in a staggered manner, and the feed gas reforming channel penetrates through the baffles.

Specifically, the reformed gas heating cavity comprises a first end plate, a second end plate arranged opposite to the first end plate and a shell; the first end cover is connected with the first end plate to form a feed gas feeding cavity, and the second end cover is connected with the second end plate to form a reformed gas outlet cavity; one end of the feed gas reforming channel is communicated with the feed gas feeding cavity through a first end plate, and the other end of the feed gas reforming channel is communicated with the reformed gas outlet cavity through a second end cover.

Further, the high-temperature flue gas inlet channel and the high-temperature flue gas outlet channel are both arranged on the outer side of the shell and are both communicated with the shell; the feed gas inlet channel is communicated with the feed gas feeding cavity through the first end cover; and the reformed gas outlet channel is communicated with the reformed gas outlet cavity through the second end cover.

Furthermore, the high-temperature flue gas inlet channel and the shell are communicated at one end of the shell close to the second end plate, and the high-temperature flue gas outlet channel and the shell are communicated at one end of the shell close to the first end plate.

Optionally, the device also comprises a quick-opening fastening and sealing structure; the quick-opening fastening and sealing structure comprises a nut, a gasket, a split washer, an eyelet positioning shaft, an eyelet bolt and a sealing elastic contact pad; a pair of ear plates arranged in parallel is arranged outside the first end plate, the swing positioning shaft penetrates through a through hole of the ear plate to be movably connected with the split retainer ring, and an eyelet end of the swing bolt is movably connected to the swing positioning shaft; the outer side of the first end cover is provided with a notch matched with the swing bolt; the thread section of the eyelet bolt is movably connected with a gasket and a nut; when the joint between the first end cover and the first end plate is connected through the swing bolt in a screwing mode, the first end cover, the sealing elastic contact pad and the first end plate are sequentially in sealing abutting connection.

Furthermore, a guide fan blade for dispersing the high-temperature flue gas is arranged in the high-temperature flue gas inlet channel.

Further, temperature measuring points are arranged in the high-temperature flue gas inlet channel and the high-temperature flue gas outlet channel.

Specifically, the catalyst includes a low temperature catalyst and a high temperature catalyst.

Specifically, the flue gas purification device also comprises a high-temperature flue gas inlet communicated with the high-temperature flue gas inlet channel and a high-temperature flue gas outlet communicated with the high-temperature flue gas outlet channel.

Has the beneficial effects that:

(1) The utility model discloses a set up the baffling structure in reforming gas heating chamber for the extension high temperature flue gas passes through regional flow stroke at the high temperature flue gas, and then improves conversion efficiency.

(2) The high-temperature flue gas inlet channel and the high-temperature flue gas outlet channel are both arranged outside the shell and are both communicated with the shell; the feed gas inlet channel is communicated with the feed gas feeding cavity through a first end cover; the reformed gas outlet channel is communicated with the reformed gas outlet cavity through a second end cover; compared with the existing reformer, the high-temperature flue gas inlet channel and the high-temperature flue gas outlet channel do not occupy the area of the first end plate and the second end plate, so that the reformer can further improve the utilization rate of high-temperature flue gas by further increasing the number of the raw material gas reforming channels 30 between the first end plate and the second end plate under the condition of not changing the internal space of the reformed gas heating cavity, and the structure miniaturization of the reformer is facilitated.

(3) Compared with the integrated design, the utility model has the advantages that the joint between the first end cover and the first end plate is detachably connected in a sealing way through the quick-opening fastening sealing structure; when the joint between the first end cover and the first end plate is connected by screwing the swing bolt, the first end cover, the sealing elastic contact pad and the first end plate are sequentially in sealing abutment; the gasket is moved upwards by loosening the nut, the movable joint bolt is rotated outwards, and the first end cover is taken away, so that the first end cover is quickly separated from the first end plate, the catalyst in the feed gas reforming channel is convenient to replace, and the service life of the whole reformer is prolonged.

(4) The utility model discloses set up the water conservancy diversion flabellum that is used for making the high temperature flue gas dispersion in the high temperature flue gas inlet channel. The guide fan blades are welded on the high-temperature flue gas inlet channel. After the high-temperature flue gas enters the channel, the guide fan blades disperse the high-temperature flue gas and enable the high-temperature flue gas to form rotary airflow. High-temperature flue gas enters the heating cavity of the reformer in a rotating airflow mode, so that the high-temperature flue gas is more uniformly dispersed and more sufficient in heat dissipation.

Drawings

These and/or other advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural diagram of an embodiment of a fuel reformer for a solid oxide fuel cell system according to the present invention;

fig. 2 is a schematic structural view of a baffle plate according to an embodiment of the present invention;

FIG. 3 is an enlarged partial view of the quick-open fastening and sealing arrangement shown in FIG. 1;

FIG. 4 is a front view of the quick-open fastening and sealing arrangement of FIG. 1;

fig. 5 is a schematic structural view of a guide vane according to an embodiment of the present invention.

Detailed Description

The utility model discloses a reference numeral is as follows: a raw gas inlet channel 10, a raw gas inlet cavity 20, a first end cover 2010, a raw gas reforming channel 30, a low-temperature catalyst 3010, a high-temperature catalyst 3020, a reformed gas heating cavity 40, a first end plate 4010, a baffle plate 4020, a second end plate 4030, a high-temperature flue gas inlet temperature measurement point 4040, a high-temperature flue gas outlet temperature measurement point 4050, guide vanes 4060, a high-temperature flue gas inlet 4070, a high-temperature flue gas inlet channel 4080, a high-temperature flue gas outlet channel 4090, a high-temperature flue gas outlet 4100, a second end cover 4110, a housing 4120, a reformed gas outlet channel 50, an open fastening sealing structure 70, a nut 7010, a gasket 7020, an open retainer ring 7030, an articulated positioning shaft 7040, an articulated bolt 7050, an eyelet end 7060, an ear plate 7070, an ear 7080, a sealing elastic articulated notch contact pad 7090, a high-temperature flue gas passing region 80, and a reformed gas outlet cavity 90.

The technical solution of the present invention will be explained in detail with reference to the accompanying drawings. The arrows in the figure represent the direction of fluid flow.

Referring to fig. 1, the present invention provides a fuel reformer for a solid oxide fuel cell system, which comprises a high temperature flue gas inlet channel 4080, a high temperature flue gas outlet channel 4090, a reformed gas heating chamber 40, a raw gas feeding chamber 20, a raw gas inlet channel 10, a reformed gas outlet chamber 90, and a reformed gas outlet channel 50. One end of the reformed gas heating chamber 40 communicates with the raw gas feed chamber 20, and the other end communicates with the reformed gas outlet chamber 90. The raw material gas inlet channel 10 is a channel for external raw material gas to enter the raw material gas inlet cavity 20, and the raw material gas inlet channel 10 is communicated with the raw material gas inlet cavity 20. The reformed-gas outlet passage 50 is a passage for supplying the reformed gas to the outside, and the reformed-gas outlet passage 50 communicates with the reformed-gas outlet chamber 90. The reformed gas heating chamber 40 is provided therein with a high temperature flue gas passing region 80 and a raw gas reforming passage 30. The raw material gas reforming passage 30 is a passage through which the preheated raw material gas undergoes a catalytic reaction, a catalyst for the reforming reaction is disposed inside the raw material gas reforming passage 30, and the raw material gas feeding cavity 20 is communicated with the reformed gas outlet cavity 90 through the raw material gas reforming passage 30. The high temperature flue gas inlet channel 4080, the high temperature flue gas passing area 80 and the high temperature flue gas outlet channel 4090 are communicated in sequence so that the high temperature flue gas passes through the high temperature flue gas passing area 80 to exchange heat with the feed gas reforming channel 30. The high temperature flue gas provides the heat required for the reforming reaction in the high temperature flue gas pass through zone 80. In order to improve the heat exchange efficiency, the reformed gas heating chamber 40 is provided with a baffle structure for extending the flow path of the high temperature flue gas in the high temperature flue gas passing region 80.

In some embodiments of the present invention, referring to fig. 1 and 2, the baffle structure is two or more baffles 4020 alternately arranged in a staggered manner, and the feed gas reforming passage 30 penetrates through the baffles 4020.

Specifically, referring to fig. 1, the alternate staggered arrangement means that adjacent baffle plates 4020 are parallel to each other and are sequentially arranged along the direction of the raw material gas reforming passage 30, and the baffle plates 4020 are sequentially staggered by a certain angle along the circumferential direction of the axis of the raw material gas reforming passage 30. The raw gas reforming passage 30 penetrates the baffle plate 4020. The feed gas reforming passage 30 preferably extends vertically through a baffle 4020. The baffle plate 4020 increases the turbulence degree of the high-temperature flue gas flowing in the high-temperature flue gas passing region 80, so that the high-temperature flue gas vertically flows through the outer wall of the raw gas reforming channel 30, and cross-flow contact heat exchange is formed between the high-temperature flue gas and the raw gas reforming channel. On the other hand, the baffle plate 4020 may be a plate having a high thermal conductivity, and a part of heat of the high-temperature flue gas is transferred to the feed gas reforming passage 30 by the baffle plate 4020 in a heat conduction manner. Thereby, the heat transfer efficiency of the reformer is improved.

In some embodiments of the present invention, referring to fig. 1, the reformed gas heating chamber 40 includes a first end plate 4010, a second end plate 4030 disposed opposite the first end plate 4010, and a housing 4120. A first end cap 2010 is coupled to the first end plate 4010 to form a feed gas feed chamber 20, and a second end cap 4110 is coupled to the second end plate 4030 to form a reformate gas outlet chamber 90. The raw gas reforming passage 30 has one end communicating with the raw gas feed chamber 20 through a first end plate 4010 and the other end communicating with the reformed gas outlet chamber 90 through a second end cap 4110.

Thus, the high-temperature flue gas passage area 80 is surrounded by the first end plate 4010, the second end plate 4030, the inner side wall of the housing 4120, and the outer side wall of the raw gas reforming passage 30.

In some embodiments of the present invention, referring to fig. 1, the high temperature flue gas inlet channel 4080 and the high temperature flue gas outlet channel 4090 are both disposed outside the housing 4120 and both communicate with the housing 4120. The raw material gas inlet passage 10 communicates with the raw material gas feed chamber 20 through the first end cover 2010. The reformed gas outlet passage 50 communicates with the reformed gas outlet chamber 90 through the second end cap 4110.

Compare with the mode that sets up high temperature flue gas inlet channel 4080 and high temperature flue gas outlet channel 4090 in raw material gas reforming passage 30 both ends, through set up high temperature flue gas inlet channel 4080 and high temperature flue gas outlet channel 4090 in the casing 4120 outside, compare with current reformer, do not occupy the area of first end plate 4010 and second end plate 4030, make under the condition that does not change reformed gas heating chamber 40 inner space, this reformer can be through the quantity that further increases raw material gas reforming passage 30 between first end plate 4010 and second end plate 4030 in order to further improve the utilization ratio of high temperature flue gas, be favorable to the structure miniaturization of reformer.

Preferably, referring to fig. 2, the feed gas reforming channels 30 are distributed in a honeycomb shape between the first end plate 4010 and the second end plate 4030.

In some embodiments of the present invention, referring to fig. 1, the high temperature flue gas inlet channel 4080 is located at the end of the housing 4120 near the second end plate 4030 where it communicates with the housing 4120, and the high temperature flue gas outlet channel 4090 is located at the end of the housing 4120 near the first end plate 4010 where it communicates with the housing 4120.

Therefore, the flowing direction of the high-temperature flue gas in the high-temperature flue gas passing region 80 and the flowing direction of the gas in the raw material gas reforming passage 30 are substantially in a counter-current arrangement, so as to further improve the heat exchange efficiency.

In some embodiments of the present invention, referring to fig. 1 and 3, the junction between the first end cap 2010 and the first end plate 4010 is detachably and sealingly connected by a quick-opening fastening seal structure 70 to facilitate replacement of the catalyst in the feed gas reforming channel 30.

Specifically, referring to fig. 4, the quick-open fastening and sealing structure 70 includes a nut 7010, a washer 7020, a split washer 7030, a swing positioning shaft 7040, and a swing bolt 7050. A pair of ear plates 7070 which are arranged in parallel are arranged outside the first end plate 4010, the swing positioning shaft 7040 passes through a through hole of the ear plates 7070 to be movably connected with the split retainer ring 7030, and the eyelet end 7060 of the swing bolt 7050 is movably connected to the swing positioning shaft 7040. The outside of the first end cap 2010 is provided with a notch 7080 which fits over the swing bolt 7050. A washer 7020 and a nut 7010 are movably connected to the threaded section of the swing bolt 7050. The junction between the first end cap 2010 and the first end plate 4010 is bolted by swing bolts 7050. By loosening the nut 7010, the spacer 7020 is moved upward, and the swing bolt 7050 is rotated outward, and the first end cap 2010 is removed, whereby the first end cap 2010 is quickly separated from the first end plate 4010.

Referring to fig. 3, the interface between the first end cap 2010 and the first end plate 4010 is also provided with a sealing resilient contact pad 7090. The first end cap 2010, the sealing resilient contact pad 7090 and the first end plate 4010 are in turn in sealing abutment when the interface between the first end cap 2010 and the first end plate 4010 is screwed together by the swing bolt 7050.

With this quick-open fastening and sealing structure 70, the sealing and separating operation between the first end cap 2010 and the first end plate 4010 is facilitated and speeded.

In some embodiments of the present invention, referring to fig. 1 and 5, a flow guiding fan 4060 for dispersing the high temperature flue gas is disposed in the high temperature flue gas inlet passage 4080. The guide vanes 4060 are welded to the high temperature flue gas inlet passage 4080. Preferably, the axis of the guide fan 4060 is on the same axis as the axis of the high temperature flue gas inlet passage 4080. After the high temperature flue gas enters the high temperature flue gas inlet passage 4080, the flow guide fan 4060 disperses the high temperature flue gas and makes the high temperature flue gas form a rotating air flow. The high-temperature flue gas enters the reformed gas heating cavity 40 in a rotary airflow mode, so that the dispersion is more uniform, and the heat dissipation is more sufficient.

In some embodiments of the present invention, temperature measuring points are disposed in the high temperature flue gas inlet channel 4080 and the high temperature flue gas outlet channel 4090.

Specifically, referring to fig. 1, a high temperature flue gas inlet temperature measuring point 4040 is arranged in the high temperature flue gas inlet channel 4080, and a high temperature flue gas outlet temperature measuring point 4050 is arranged in the high temperature flue gas outlet channel 4090.

In some embodiments of the present disclosure, the catalyst includes a low temperature catalyst 3010 and a high temperature catalyst 3020. The filling ratio of the low-temperature catalyst 3010 to the high-temperature catalyst 3020 is related to the catalyst performance, and is generally 1:1.

in some embodiments of the present invention, the flue gas processing system further comprises a high temperature flue gas inlet 4070 communicated with the high temperature flue gas inlet channel 4080 and a high temperature flue gas outlet 4100 communicated with the high temperature flue gas outlet channel 4090.

The utility model provides a thought and method of fuel reformer for solid oxide fuel cell system, the method and the way that realize this technical scheme are many specifically, it is above only the preferred embodiment of the utility model discloses, it should be noted, to ordinary technical personnel in this technical field, under the prerequisite that does not deviate from the utility model discloses the principle, can also make a plurality of improvements and moist decorations, these improvements and moist decorations should also regard as the utility model discloses a protection scope. All the components not specified in the present embodiment can be realized by the prior art.

Claims (10)

1. A fuel reformer for a solid oxide fuel cell system is characterized by comprising a high-temperature flue gas inlet channel (4080), a high-temperature flue gas outlet channel (4090), a reformed gas heating cavity (40), a raw material gas feeding cavity (20), a raw material gas inlet channel (10), a reformed gas outlet cavity (90) and a reformed gas outlet channel (50); one end of the reformed gas heating cavity (40) is communicated with the raw material gas feeding cavity (20), and the other end is communicated with the reformed gas outlet cavity (90); the raw material gas inlet channel (10) is communicated with the raw material gas feeding cavity (20); the reformed gas outlet channel (50) is communicated with the reformed gas outlet cavity (90); a high-temperature flue gas passing area (80) and a raw material gas reforming channel (30) are arranged in the reformed gas heating cavity (40); a catalyst for reforming reaction is arranged in the raw material gas reforming channel (30), and the raw material gas feeding cavity (20) is communicated with the reformed gas outlet cavity (90) through the raw material gas reforming channel (30); the high-temperature flue gas inlet channel (4080), the high-temperature flue gas passing area (80) and the high-temperature flue gas outlet channel (4090) are communicated in sequence so that the high-temperature flue gas passes through the high-temperature flue gas passing area (80) to exchange heat with the feed gas reforming channel (30); the reformed gas heating cavity (40) is provided with a baffling structure for prolonging the flow stroke of the high-temperature flue gas in the high-temperature flue gas passing area (80).

2. A fuel reformer for a solid oxide fuel cell system in accordance with claim 1, wherein the baffle structure is two or more baffles (4020) alternately arranged in a staggered manner, and the feed gas reforming passage (30) penetrates the baffles (4020).

3. A fuel reformer for a solid oxide fuel cell system as claimed in claim 1 or 2, wherein the reformed gas heating chamber (40) comprises a first end plate (4010), a second end plate (4030) disposed opposite the first end plate (4010), and a housing (4120); the first end cover (2010) is connected with the first end plate (4010) to form a raw material gas feeding cavity (20), and the second end cover (4110) is connected with the second end plate (4030) to form a reformed gas outlet cavity (90); one end of the raw material gas reforming channel (30) is communicated with the raw material gas feeding cavity (20) through a first end plate (4010), and the other end of the raw material gas reforming channel is communicated with the reformed gas outlet cavity (90) through a second end cover (4110).

4. A fuel reformer for a solid oxide fuel cell system as claimed in claim 3, wherein the high temperature flue gas inlet channel (4080) and the high temperature flue gas outlet channel (4090) are both disposed outside the housing (4120) and are both in communication with the housing (4120); the raw material gas inlet channel (10) is communicated with a raw material gas inlet cavity (20) through the first end cover (2010); the reformed gas outlet channel (50) is communicated with the reformed gas outlet cavity (90) through the second end cover (4110).

5. A fuel reformer for a solid oxide fuel cell system as claimed in claim 4, characterized in that the high temperature flue gas inlet channel (4080) is located at the end of the housing (4120) near the second end plate (4030) where it communicates with the housing (4120), and the high temperature flue gas outlet channel (4090) is located at the end of the housing (4120) near the first end plate (4010) where it communicates with the housing (4120).

6. A fuel reformer for a solid oxide fuel cell system as set forth in claim 3, further comprising a quick-open fastening seal structure (70); the quick-open fastening and sealing structure (70) comprises a nut (7010), a gasket (7020), a split washer (7030), a swing positioning shaft (7040), a swing bolt (7050) and a sealing elastic contact pad (7090); a pair of ear plates (7070) which are arranged in parallel are arranged on the outer side of the first end plate (4010), a swing positioning shaft (7040) penetrates through a through hole of the ear plate (7070) to be movably connected with the split retainer ring (7030), and an eyelet end (7060) of the swing bolt (7050) is movably connected to the swing positioning shaft (7040); the outer side of the first end cover (2010) is provided with a notch (7080) matched with the swing bolt (7050); a gasket (7020) and a nut (7010) are movably connected to the thread section of the swing bolt (7050); the first end cap (2010), the sealing resilient contact pad (7090) and the first end plate (4010) are in sealing abutment in sequence when the interface between the first end cap (2010) and the first end plate (4010) is screwed in by means of the swing bolt (7050).

7. A fuel reformer for a solid oxide fuel cell system according to claim 6, wherein guide vanes (4060) for dispersing high temperature flue gas are installed in the high temperature flue gas inlet passage (4080).

8. A fuel reformer for a solid oxide fuel cell system in accordance with claim 7, characterized in that temperature measurement points are provided in both the high temperature flue gas inlet channel (4080) and the high temperature flue gas outlet channel (4090).

9. A fuel reformer for a solid oxide fuel cell system as claimed in claim 1 or 2, characterized in that the catalyst comprises a low temperature catalyst (3010) and a high temperature catalyst (3020).

10. A fuel reformer for a solid oxide fuel cell system in accordance with claim 9, further comprising a high temperature flue gas inlet (4070) in communication with the high temperature flue gas inlet channel (4080) and a high temperature flue gas outlet (4100) in communication with the high temperature flue gas outlet channel (4090).

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