Series power supply structure of electrothermal catalyst bed layer

Abstract

The invention discloses a series power supply structure of electrothermal catalyst bed layers, and belongs to the technical field of chemical engineering. Aiming at the problem of non-uniform current distribution of series catalysts, a plurality of flat plate catalysts are connected in series through conductor connecting pieces; the conductor connecting piece comprises a first electric connecting part, a second electric connecting part and a bridging conductor, and two ends of the conductor connecting piece are respectively contacted with the whole current leading-out / leading-in edge of the adjacent catalyst; and end connecting pieces are arranged at the head and tail. Each catalyst independently defines a coordinate system, and projection coordinates of current input / output points of each catalyst meet a < = 0 and b > = W, so that uniform distribution of current is ensured. The bridging conductors can provide support, the connectors employ welding / crimping, foam / wire mesh based catalysts are employed, local overheating is eliminated, and wiring is simplified.

Description

Technical Field

[0001] This invention belongs to the field of chemical technology, and specifically relates to a series power supply structure for an electrothermal catalyst bed. Background Technology

[0002] The chemical industry is a fundamental and pillar industry of the national economy, and energy conservation, emission reduction, and green, low-carbon development in chemical processes are crucial. In recent years, with the rapid development and efficiency improvement of various clean energy power generation technologies such as wind and solar power, the electrification of chemical processes has become an important development direction. Currently, chemical reaction processes mainly rely on thermal energy. Using electric heating technology to replace traditional fuel combustion for heating offers advantages such as rapid heating, high energy efficiency, and precise control, which is of great significance for promoting the low-carbon electrification transformation of the chemical industry.

[0003] In recent years, "internal resistance heating" structured catalyst reaction technology has emerged as a highly efficient electro-driven reaction technology. The core of this technology lies in combining a conductive structured catalyst with resistance heating, embedding the structured catalyst itself as a heating element within the circuit. In this architecture, current flows directly through the structured catalyst, and the Joule heat generated within it directly heats the catalytic reaction, enabling the reaction system to quickly reach the required temperature. Compared to traditional thermocatalysis methods that rely on external heating methods such as radiation and convection heat transfer, "internal resistance heating" structured catalyst reaction technology not only effectively reduces thermal resistance, significantly improves the utilization efficiency of high-quality heat, and shortens reactor start-up, shutdown, and conditioning times, but also features a simpler and more integrated thermal management system, possessing excellent potential for industrial-scale production and promising large-scale industrial applications in the future.

[0004] Currently, research and development of "resistive internal heating" structured catalyst reactors has begun. For example, Chinese patent CN120243034A provides a multi-bed "resistive internal heating" foam metal catalyst reactor design, which achieves segmented temperature control by connecting each foam metal catalyst bed to an external power source. Chinese patent CN119140016A provides an electrically driven reactor based on a conductive heating integral honeycomb structure, which connects the honeycomb structure heating element to an external power source through a combination of strip-shaped flow guide conductors and wires. Chinese patent CN120172348A provides a "resistive internal heating" structured catalyst reactor with a nickel alloy cylinder supported by an alloy carrier with corrugated internal layers as the basic electrothermal catalytic unit, and the electrothermal catalytic units are connected in series with an external power source to form a conductive circuit.

[0005] However, in the development of "resistive internal heating" structured catalyst reactors, insufficient attention has been paid to the scientific design of the power supply structure for the structured catalyst placed inside the reactor. Currently, simple wire connections or simple adaptation of the current collector based on the geometry of the contact end face are often used for electrical connection. In practical applications, these solutions will face uneven current distribution inside the structured catalyst, resulting in uneven heat generation and temperature, which will seriously affect the conversion efficiency of reactants and the selectivity of products. First, since current preferentially travels along the path of least resistance, the above-mentioned simple power supply structure is difficult to achieve the effect of uniform current distribution inside the catalyst given the wide conductive cross-section of the structured catalyst. Second, the reactor is a closed container that needs to withstand high temperature and high pressure and has limited space. How to uniformly inject the current guided by external wires from the narrow cross-section into the catalyst with a wide cross-section within a limited space, how to minimize the number of electrical interfaces on the reactor wall for connecting to external power sources to improve the safety and reliability of the reactor, and how to increase the catalyst loading while balancing efficient power supply and effective mass transfer, all these issues need to be considered from the perspective of the power supply structure. Furthermore, in actual production processes, catalysts may deactivate and need to be replaced, and reactors themselves require regular maintenance. These requirements necessitate a relatively simple power supply structure inside the reactor. Complex wiring layouts not only hinder production efficiency but also reduce system reliability and increase safety risks such as short circuits, open circuits, and partial discharges caused by poor contact. Summary of the Invention

[0006] The purpose of this invention is to provide a series power supply structure for an electrothermal catalyst bed, suitable for use in a structured catalyst reactor with "internal resistance heating".

[0007] The basic idea of ​​this invention is as follows:

[0008] The power supply structure of the "resistive internal heating" structured catalyst bed is formed by the electrical series connection between multiple flat conductive structured catalysts. Then, by connecting the end connectors installed on the first and last structured catalysts to external wires, each of them is connected to the positive and negative terminals of the power supply to form an electric heating circuit.

[0009] For each planar conductive structured catalyst in a series circuit, a strategy is employed to ensure uniform current distribution within the catalyst plane by controlling the location of the current injection / extraction points for each catalyst. The core of this strategy lies in ensuring the total resistance (R0) of all parallel conductive paths within the catalyst plane. total The basic idea is as follows:

[0010] First, it is necessary to designate each plate-shaped catalyst to have a rectangular or square conductive heating region. When its pair of parallel sides are used as the current inlet and outlet sides, all conductive path lengths perpendicular to these sides are exactly equal. For catalysts with uniform material and thickness, their internal resistance (R1) is proportional to the path length. Therefore, the internal resistance (R1) of all parallel conductive paths is naturally equal, providing a geometric basis for achieving equal total resistance.

[0011] Secondly, balancing the external path resistance is crucial. From a circuit analysis perspective, the total resistance of any path from the current injection point to the current output point for each planar catalyst can be decomposed into three parts:

[0012] (1) The path resistance (R2) of the catalyst from the current injection point to a point P1 on its current inlet side;

[0013] (2) The path resistance (R1) inside the catalyst from the current inlet point P1 to the current outlet point P2.

[0014] (3) Path resistance (R3) from the current-outlet edge P2 to the current-outlet point outside the catalyst;

[0015] Under the aforementioned conditions, R1 is constant, thus achieving R... total The key to ensuring equality translates to ensuring that the external resistances (R2+R3) of all paths are also equal.

[0016] Furthermore, to ensure a constant external resistance (R2+R3) for each parallel conductive path, the positions of their respective current injection / extraction points must be controlled. For (R2+R3) to be constant, the spatial positions of the current injection and extraction points must satisfy specific conditions: a one-dimensional coordinate system (0 to W) is established with the current inlet edge as a reference; the projected coordinates a of the reference point of the current injection point on this coordinate system are ≤0; the projected coordinates b of the reference point of the current extraction point are ≥W. The reference point mentioned in this invention refers to the current inlet / extraction position reference used for projection positioning. When the connection area is a point-like structure (such as a solder joint), the reference point is the point itself; when it is a surface-like structure (such as a bolt hole), the reference point is its geometric or electrical center point, and its projected coordinates should satisfy the conditions a≤0, b≥W. This condition ensures that for any parallel conductive path P1P2 within a conductive heating area, the total length of its external path |P1-a|+|P2-b| is always a constant (ba). Under the condition that the conductor resistivity is uniform, this means that the external resistance (R2+R3) is constant and independent of the choice of the positions of P1 and P2.

[0017] This ensures that the internal resistance (R1) and external resistance (R2+R3) of each parallel conductive path remain constant, i.e., the total resistance (R) of all parallel conductive paths remains constant. totalThe current will be equal to the current in the conductive region of the plate-shaped catalyst, according to Ohm's law.

[0018] This method is based on the geometry of the electrothermal region, and then constrains the external resistance by precisely controlling the spatial position of the wire connection points, ultimately ensuring the uniformity of current distribution at the circuit topology level. This principle is universal, and its effectiveness is unaffected by whether the wire connection points and the catalyst are coplanar.

[0019] Based on the above ideas, the technical solution adopted by the present invention is as follows:

[0020] A series power supply structure for an electrothermal catalyst bed includes:

[0021] A conductive pathway is formed by multiple plate-shaped conductive structured catalysts connected in series. Each catalyst does not directly contact the others and each has a rectangular or square effective conductive heating area with oppositely arranged current-introducing and current-outtroducing sides.

[0022] Multiple conductor connectors, each conductor connector is used to electrically connect two adjacent catalysts, and the two adjacent catalysts are electrically connected through only one conductor connector;

[0023] Each conductor connector includes:

[0024] A first electrical connection portion, which forms continuous electrical contact with the entire current-leading edge of the preceding catalyst;

[0025] A second electrical connection portion, which forms continuous electrical contact with the entire current-introducing edge of the subsequent catalyst;

[0026] A bridging conductor is electrically connected to a first connection region of a first electrical connection portion and simultaneously electrically connected to a second connection region of a second electrical connection portion;

[0027] Each conductor connector is configured to allow current to be drawn from the previous catalyst, pass sequentially through the first electrical connection, the bridging conductor, and the second electrical connection, and then be injected into the next catalyst, without affecting the uniform distribution of current along the entire length of the current draw-out and draw-in sides of the catalyst to which it is connected.

[0028] The first end connector and the second end connector are electrically connected to the catalysts at the beginning and end of the series conductive path, respectively. The first end connector forms a continuous electrical contact with the entire current-introducing edge of the first catalyst and is provided with a third connection area for connecting the wire. The second end connector forms a continuous electrical contact with the entire current-outgoing edge of the last catalyst and is provided with a fourth connection area for connecting the wire.

[0029] For each catalyst in the conductive path, a one-dimensional coordinate system belonging to the catalyst is established along one end of its respective current-introducing edge as the origin O, and the coordinate of the other end is W.

[0030] The reference point of the current input point of the catalyst is projected onto the coordinate system along a direction perpendicular to the one-dimensional coordinate system, and the coordinates of the resulting projection point are a≤0.

[0031] The reference point of the current output point of the catalyst is projected onto the coordinate system along a direction perpendicular to the one-dimensional coordinate system, and the coordinates of the resulting projection point are b≥W;

[0032] Furthermore, the first electrical connection is configured to enable current to be transmitted between the first connection region and the current-outgoing edge, and to maintain a uniform distribution of current over the entire length of the current-outgoing edge.

[0033] The second electrical connection is configured to enable current to be transmitted between the second connection region and the current-introducing edge, and to maintain a uniform distribution of current over the entire length of the current-introducing edge.

[0034] The first end connector is configured to enable current transmission between the third connection region and the current-introducing edge, and to maintain a uniform distribution of current over the entire length of the current-introducing edge.

[0035] The second end connector is configured to enable current transmission between the fourth connection region and the current-leading edge, and to maintain a uniform distribution of current over the entire length of the current-leading edge.

[0036] For the first catalyst, its current input point is the third connection region, and its current output point is the first connection region on the conductor connector connected to it.

[0037] For the last catalyst, its current input point is the second connection region on the conductor connector connected to it, and its current output point is the fourth connection region.

[0038] For the intermediate catalyst, its current input point is the second connection area on a conductor connector connected to it, and its current output point is the first connection area on another conductor connector connected to it.

[0039] There is no direct or through other conductor electrical connection between the conductor connectors, or between the conductor connector and the first end connector or the second end connector.

[0040] Furthermore, the planar conductive structured catalyst includes a conductive substrate and a catalytically active component supported on the surface of the substrate. The morphology and structure of the conductive substrate include, but are not limited to, at least one of foam, fiber felt, and wire mesh.

[0041] Furthermore, the first electrical connection, the second electrical connection, the first end connector and / or the second end connector achieve continuous electrical contact with the catalyst through welding, pressing, riveting, plugging, bolting or conductive bonding. Before the electrical contact operation, the catalyst edge is treated with conductive filling to reduce contact resistance.

[0042] Preferably, the first electrical connection portion, the second electrical connection portion, the first end connector and / or the second end connector are provided with grooves for fixing the side of the catalyst.

[0043] Furthermore, the first connection area and / or the second connection area are weld points, rivet points, crimp points, bolt connection points, plug holes, conductive adhesive points, or integrally formed connection areas.

[0044] Preferably, the bridging conductor provides mechanical support.

[0045] Preferably, the bridging conductor has a columnar structure.

[0046] Furthermore, the third and / or fourth connection areas are weld points, rivet points, crimp points, bolt connection points, plug holes, or conductive adhesive points.

[0047] Preferably, the multiple planar conductive structured catalysts are arranged in parallel.

[0048] Preferably, the conductor connector, the first end connector, and the second end connector are made of metallic material, and their electrical conductivity is higher than that of the planar conductive structured catalyst.

[0049] The present invention has the following beneficial effects:

[0050] (1) By defining a coordinate system and projection rules (a ≤ 0, b ≥ W) for each catalyst, this invention ensures that the current is uniformly distributed on each independent catalyst, thus laying the foundation for uniform heating and reaction of the entire series bed and fundamentally eliminating the "barrel effect" caused by uneven current in a single unit in the series system.

[0051] (2) This invention provides a predictable and scalable standard method for constructing large-scale electrothermal catalytic beds, which can flexibly stack any number of catalyst units to construct reactors of different power and scale without redesigning complex flow equalization schemes, thus simplifying the design process of reactors from laboratory pilot to industrial scale-up.

[0052] (3) This invention transforms a current distribution physics problem into a precise, measurable, and controllable geometric positioning problem. The location of the connection point only needs to meet the requirements of the projection coordinates, without being restricted by its specific location in three-dimensional space. This gives the design great flexibility and can simultaneously optimize the mass transfer path (flow channel design), catalyst loading, sealing structure, and thermal management layout, meeting the comprehensive needs of chemical production for multi-physics field synergy (mass transfer, heat transfer, reaction) and continuous production.

[0053] (4) The series unit in the series power supply structure described in this invention has advantages such as simple structure, easy large-scale processing and assembly, and convenient maintenance and replacement. While realizing the power supply of multiple plate catalysts, it greatly reduces the number of external wire interfaces and the wiring requirements in the reactor, which facilitates efficient and compact integration in the limited space of the reactor. It can greatly simplify the reactor design and reduce manufacturing costs, improve its operational reliability, and make operation and maintenance easier. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0055] Figure 2 This is a schematic diagram (top view) of the structure of Embodiment 1 of the present invention.

[0056] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0057] Figure 4 This is a schematic diagram (top view) of the structure of Embodiment 3 of the present invention.

[0058] Figure 5 This is a schematic diagram of the structure of Embodiment 4 of the present invention.

[0059] Wherein: 1 is a planar conductive structured catalyst, 21 is a first electrical connection part, 22 is a second electrical connection part, 23 is a bridging conductor, 211 is a first connection region, 31 is a first end connector, 311 is a third connection region, 32 is a second end connector, and 321 is a fourth connection region. Detailed Implementation

[0060] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. However, the following embodiments are only for explaining the present invention, and the scope of protection of the present invention should include all the contents of the claims. Moreover, through the description of the following embodiments, those skilled in the art can fully implement all the contents of the claims of the present invention.

[0061] This invention relates to a series power supply structure for an electrothermal catalyst bed. Its core lies in ensuring that the current is evenly distributed on each plate catalyst in series through a unique conductor connector and end connector design, combined with precise geometric positioning rules, while significantly reducing the number of external power supply interfaces.

[0062] Example 1

[0063] This embodiment demonstrates a basic power supply structure formed by eight planar conductive structured catalysts 1 connected in series. See also Figure 1 The planar conductive structured catalyst 1 is made of nickel foam, and its main plane is rectangular, with dimensions of 200mm in length × 100mm in width × 5mm in thickness. Its two 100mm sides serve as the current inlet and current outlet sides of the effective conductive heating area, respectively, with a width W = 100mm.

[0064] The conductor connector 2 is made of copper. Its first electrical connection portion 21 and second electrical connection portion 22 are 105 mm wide, and through a welding process, they form a strong and continuous electrical contact with the entire length of the current-leading and current-leading edges of the two catalysts, respectively. The bridging conductor 23 is a cylinder connecting the two electrical connections. The first connection area 211 and the second connection area 222 are the connection points between the bridging conductor 23 and the two electrical connections.

[0065] The first end connector 31 and the second end connector 32 are also made of copper. They form a strong and continuous electrical contact with the current inlet and current outlet edges of the first and last catalysts by welding, and are provided with wiring stud holes as the third connection area 311 and the fourth connection area 321.

[0066] Connection point setup and projection coordinates: A one-dimensional coordinate system is established with the left end of the current inlet edge of each catalyst as the origin O (0) and the right end as the coordinate W (100). For the first catalyst, its current injection point is the third connection area 311 (i.e., the center of the wiring stud hole). The coordinate of this center point is a=0 when projected vertically onto the coordinate system, as shown below. Figure 2 The current-derived point is the first connection area 211 on the conductor connector 2 connected to it, and the projected coordinates of this point are b=100 (b=W), as shown below. Figure 2 The connection points of the intermediate and final catalysts follow the same pattern, all satisfying the conditions a=0 and b=W.

[0067] The resistance of the copper conductor connector and the end connector is much lower than that of the catalyst itself, ensuring that the current is evenly distributed across the entire width of the first electrical connection 21 and the first end connector 31 before reaching the edge of the catalyst, thereby achieving a uniform distribution of the current on each catalyst plane.

[0068] Example 2

[0069] This embodiment has a basically the same structure as Embodiment 1, such as... Figure 3 As shown, the difference lies in that the conductor connector 2 and the first end connector 31 and the second end connector 32 have grooves for fixing the side of the catalyst 1.

[0070] Example 3

[0071] This embodiment is basically the same in structure as Embodiment 1, except that the location of the connection point is set to demonstrate the flexibility of the projection rules.

[0072] Connection point setup and projection coordinates: A one-dimensional coordinate system is established with the left end of the current inlet edge of each catalyst as the origin O (0) and the right end as the coordinate W (100). For the first catalyst, its current injection point is the third connection area 311 (i.e., the center of the wiring stud hole). The coordinate of this center point is vertically projected onto the coordinate system as a = -10mm (a < 0), as shown below. Figure 4 The current drawout point is the first connection area 211 on the conductor connector 2 connected to it, and the projected coordinates of this point are b=110mm (b>W). Figure 4 The connection points of the intermediate and final catalysts follow the same pattern, all satisfying the conditions a<0 and b>W.

[0073] This setting also satisfies the projection conditions (a≤0, b≥W) specified in the claims and can achieve the same effect of uniform current distribution, demonstrating the tolerance of the present invention for the physical location of the connection point.

[0074] Example 4

[0075] This embodiment demonstrates the case where the connection point is not coplanar with the main plane of the catalyst.

[0076] Its structure is similar to that of Embodiment 1, except that: both the first end connector 31 and the second end connector 32 are L-shaped copper sheets, and the two wiring stud holes serve as the third connection area 311 and the fourth connection area 321, respectively. The reference point of the third connection area 311 is located below the first catalyst in space, and its vertical projection falls on the coordinate a = -5mm (a < 0) of the first catalyst coordinate system. The reference point of the fourth connection area 321 is located above the last catalyst in space, and its vertical projection falls on the coordinate a = 105mm (b > W) of the first catalyst coordinate system, as shown below. Figure 5 As shown. When the connection area is a point structure (such as a weld point), its reference point is the point itself; when the connection area is a surface structure (such as a bolt hole or a slot), it is necessary to ensure that the projected coordinates of its geometric center or electrical center point meet the condition (a≤0, b≥W).

[0077] This embodiment demonstrates that as long as the vertical projection coordinate condition is met, the actual spatial position of the connection point (even if it is not coplanar) does not affect the effect of uniform current distribution, which greatly facilitates the three-dimensional layout and heat dissipation design of the reactor.

[0078] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An electrically heated catalyst bed series power supply structure, characterized by, The application relates to a conductive path formed by a plurality of flat conductive structured catalysts (1) in series, each catalyst (1) not being in direct contact with each other and each having a rectangular or square effective conductive heating area with oppositely arranged current input edges and current output edges. A plurality of conductor connectors (2) are used to electrically connect two adjacent catalysts (1), and the two adjacent catalysts (1) are electrically connected only through one conductor connector (2). The conductor connector (2) comprises: A first electric connection part (21) which forms continuous electric contact with the whole current output edge of the previous catalyst; A second electric connection part (22) which forms continuous electric contact with the whole current input edge of the next catalyst; A bridge conductor (23) which is electrically connected to the first connection area (211) of the first electric connection part (21) and simultaneously electrically connected to the second connection area (222) of the second electric connection part (22); The conductor connector (2) is configured to enable the current to be injected into the next catalyst after being output from the previous catalyst, sequentially passing through the first electric connection part (21), the bridge conductor (23) and the second electric connection part (22), and not affecting the uniform distribution of the current on the whole length of the current output edge and the current input edge; First and second end connectors (31) and (32) are respectively electrically connected to the catalysts (1) at the head and tail of the conductive path; the first end connector (31) forms continuous electric contact with the whole current input edge of the first catalyst and is provided with a third connection area (311) for connecting a wire; and the second end connector (32) forms continuous electric contact with the whole current output edge of the last catalyst and is provided with a fourth connection area (321) for connecting a wire; For each catalyst (1) in the conductive path, the one end of the current input edge is taken as the coordinate origin O, and a one-dimensional coordinate system belonging to the catalyst is established along the edge, and the other end coordinate is W; The reference point of the current input point of the catalyst is projected onto the one-dimensional coordinate system along the direction perpendicular to the one-dimensional coordinate system, and the coordinate of the obtained projection point is a<=0; The reference point of the current output point of the catalyst is projected onto the one-dimensional coordinate system along the direction perpendicular to the one-dimensional coordinate system, and the coordinate of the obtained projection point is b>=W; The first electric connection part (21) is configured to enable the current to be transmitted between the first connection area (211) and the current output edge and maintain the uniform distribution of the current on the whole length of the current output edge; The second electric connection part (22) is configured to enable the current to be transmitted between the second connection area (222) and the current input edge and maintain the uniform distribution of the current on the whole length of the current input edge; ​ The first end connecting piece (31) is configured to transmit current between the third connecting area (311) and the current leading edge and maintain uniform distribution of current along the entire length of the current leading edge. The second end connecting piece (32) is configured to transmit current between the fourth connecting area (321) and the current leading edge and maintain uniform distribution of current along the entire length of the current leading edge. For the first catalyst (1), the current input point is the third connecting area (311), and the current output point is the first connecting area (211) on the conductor connecting piece (2) connected thereto. For the last catalyst (1), the current input point is the second connecting area (221) on the conductor connecting piece (2) connected thereto, and the current output point is the fourth connecting area (321). For the intermediate catalyst (1), the current input point is the second connecting area (221) on one conductor connecting piece (2) connected thereto, and the current output point is the first connecting area (211) on another conductor connecting piece (2) connected thereto. The conductor connecting pieces (2), the first end connecting piece (31), and the second end connecting piece (32) are not directly or indirectly connected to each other through other conductors.

2. The electrothermal catalyst bed of claim 1, wherein, The flat plate conductive structured catalyst (1) comprises a conductive substrate and a catalytically active component supported on the surface of the substrate. The morphological structure of the conductive substrate includes but is not limited to at least one of foam, fiber felt, and wire mesh.

3. The electrothermal catalyst bed of claim 1, wherein, The first electric connecting part (21), the second electric connecting part (22), the first end connecting piece (31), and / or the second end connecting piece (32) are connected to the catalyst (1) by welding, crimping, riveting, plugging, bolting, or conductive bonding. Before the electric contact operation, the edges of the catalyst are treated by conductive filling to reduce the contact resistance.

4. The electrothermal catalyst bed of claim 1, wherein, The first electric connecting part (21), the second electric connecting part (22), the first end connecting piece (31), and / or the second end connecting piece (32) are provided with grooves for fixing the side edges of the catalyst (1).

5. The electrothermal catalyst bed of claim 1, wherein, The first connecting area (211) and / or the second connecting area (221) are welding points, riveting points, crimping points, bolting points, plugging holes, conductive bonding points, or integrally formed connecting areas.

6. The electrothermal catalyst bed of claim 1, wherein, The bridging conductor (23) has a mechanical support function.

7. The electrothermal catalyst bed of claim 1, wherein, The bridging conductor (23) is in a columnar structure.

8. The electrothermal catalyst bed of claim 1, wherein, The third connecting area (311) and / or the fourth connecting area (321) are welding points, riveting points, crimping points, bolting points, plugging holes, or conductive bonding points.

9. The electrothermal catalyst bed of claim 1, wherein, The plurality of flat plate conductive structured catalysts are arranged in parallel.

10. The electrothermal catalyst bed of claim 1, wherein, The conductor connecting pieces (2), the first end connecting piece (31), and the second end connecting piece (32) are made of a metal material with a higher electrical conductivity than that of the flat plate conductive structured catalyst (1).

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