Energy conversion device and method for catalytic cracking
By integrating solid oxide fuel cells in the regenerator of the catalytic cracking equipment and blowing the alkali-carrying catalyst particles into a fluid state, the problem of low utilization rate of medium-pressure steam energy during catalytic cracking and charring is solved, and more efficient energy conversion and utilization is achieved.
Patent Information
- Application Number
- CN202311672716.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-07
- Publication Date
- 2025-06-10
AI Technical Summary
The large amount of medium-pressure steam generated by catalytic cracking and charring produces pressure drop and heat loss during the transportation process, resulting in low power generation efficiency and low energy utilization.
An energy conversion device including a reactor, a regenerator and a solid oxide fuel cell is designed. A plurality of solid oxide fuel cells are provided in the dense phase area of the regenerator. By blowing the carbon-carrying catalyst particles into a fluid state, the contact amount and contact probability of the fuel cell anode are increased, thereby converting the chemical energy and thermal energy carried by the catalyst into electrical energy.
The energy utilization efficiency of the catalyst carrying coke is improved, the quality of energy utilization is enhanced, and the problem of low energy utilization rate of medium-pressure steam is solved.
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Figure CN120127181A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of catalytic cracking technology, and in particular to an energy conversion device and method for catalytic cracking. Background Art
[0002] Catalytic cracking is an important oil refining process and plays a vital role in the oil refining industry. During the operation of the catalytic cracker, coke will be deposited on the catalyst. The amount of coke deposited on the catalyst will gradually increase, which will reduce the activity of the catalyst. The coke on the catalyst needs to be burned off to restore the activity of the catalyst. Coke is a very important by-product of the catalytic cracker. The largest energy consumption of the catalytic cracker is also the coke on the catalyst. The heat generated by the burning, in addition to providing the heat required for the reaction, will produce a large amount of medium-pressure steam.
[0003] The inventors have found through research that the catalytic cracking coke in the prior art still has at least the following defects:
[0004] The large amount of medium-pressure steam produced by catalytic cracking produces pressure drop and heat loss during transportation, and the medium-pressure steam entering the steam turbine has low power generation efficiency, resulting in low energy utilization.
[0005] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention
[0006] The purpose of the present invention is to improve the energy utilization quality of catalytic cracking coke.
[0007] The present invention provides an energy conversion device for catalytic cracking, comprising: a reactor, a regenerator and a solid oxide fuel cell;
[0008] A plurality of solid oxide fuel cells are longitudinally arranged in the cavity of the dense phase zone of the regenerator; a catalyst raw material inlet is provided at the bottom of the side wall of the dense phase zone; a regenerated catalyst outlet is provided at the top of the side wall of the dense phase zone; the catalyst raw material inlet and the regenerated catalyst outlet of the regenerator are respectively connected to the reactor; a regenerated flue gas outlet is provided at the top of the dilute phase zone of the regenerator; and an air supplement port is provided at the bottom of the regenerator;
[0009] The lower part of each solid oxide fuel cell is fixedly connected to the air distribution plate arranged at the bottom of the dense phase zone; a fixing mechanism for fixing the upper part of each solid oxide fuel cell is provided at the junction of the dilute phase zone and the dense phase zone.
[0010] Preferably, in an embodiment of the present invention, the solid oxide fuel cell comprises:
[0011] Direct carbon solid oxide fuel cell.
[0012] Preferably, in an embodiment of the present invention, the solid oxide fuel cell comprises:
[0013] Tubular solid oxide fuel cell.
[0014] Preferably, in an embodiment of the present invention, the tube wall of the tubular solid oxide fuel cell comprises:
[0015] The outer layer is a porous anode, the middle layer is a solid oxide electrolyte, and the inner layer is a porous cathode.
[0016] Preferably, in the embodiment of the present invention, the fixing mechanism is a hollow structure or a mesh structure.
[0017] Preferably, in an embodiment of the present invention, the solid oxide fuel cell and the air distribution plate are fixedly connected by a high-temperature sealant.
[0018] Preferably, in an embodiment of the present invention, a trumpet-shaped air collecting mechanism is provided at the lower end of the tubular solid oxide fuel cell.
[0019] Preferably, in the embodiment of the present invention, it also includes:
[0020] The lower ends of the tubular solid oxide fuel cells are connected to the gas supply devices outside the regenerator through pipelines.
[0021] Preferably, in the embodiment of the present invention, the arrangement of each of the tubular solid oxide fuel cells includes: a circular arrangement, or a rectangular arrangement.
[0022] Preferably, in an embodiment of the present invention, the inner diameter of the cavity of the dense phase region is smaller than the inner diameter of the cavity of the dilute phase region.
[0023] Preferably, in the embodiment of the present invention, it also includes:
[0024] An air volume control mechanism is used to control the air volume entering the air replenishment port.
[0025] Preferably, in an embodiment of the present invention, the regeneration flue gas outlet is connected to a preset flue gas turbine.
[0026] In another aspect of the present invention, there is also provided an energy conversion method for catalytic cracking, which is used in the energy conversion device for catalytic cracking as described above, comprising the steps of:
[0027] S11, delivering air to the cathode of the solid oxide fuel cell and blowing the carbon-carrying catalyst particles delivered to the dense phase region of the regenerator into a fluid state;
[0028] S12, controlling the temperature in the regenerator cavity to a preset temperature;
[0029] S13, storing or transmitting the electrical energy generated by the solid oxide fuel cell to a preset load;
[0030] S14. The high-temperature regeneration flue gas is transported to a preset flue gas turbine through a regeneration flue gas outlet.
[0031] Preferably, in an embodiment of the present invention, the preset temperature includes: 650°C-850°C.
[0032] Compared with the prior art, the present invention has the following beneficial effects:
[0033] After research, the inventors found that in the catalytic cracking equipment, the catalyst in the regenerator is in the form of particles with coke attached to it, its movement state is fluidized, and the heat generated by the burning makes the regenerator at a higher temperature level; for solid oxide fuel cells (SOFCs), high-temperature, granular and fluidized carbon-carrying catalysts have high reaction activity, that is, the carbon-carrying catalyst entering the regenerator is very suitable for use as a solid carbon-containing fuel for solid oxide fuel cells.
[0034] Based on the above understanding, in order to use the high-temperature carbon-carrying catalyst input into the regenerator as the solid carbon-containing fuel of the solid oxide fuel cell to convert the chemical energy of the coke carried by the catalyst and the heat energy released during the partial burning process into electrical energy, the solid oxide fuel cell is arranged in the regenerator of the catalytic cracking equipment in the present invention. In this way, when the carbon-carrying catalyst with coke particles attached to it in the reactor is transported to the dense phase area of the regenerator as a raw material, the carbon-carrying catalyst particles are blown into a fluid state to increase the contact amount and contact probability between the carbon-carrying catalyst particles and the anode of the solid oxide fuel cell, thereby improving the conversion efficiency of electrical energy conversion; since the carbon-carrying catalyst in the present invention not only has a high temperature and is granular, but also has a high reaction activity, the fluidized carbon-carrying catalyst particles can convert the chemical energy of the coke carried by the catalyst and part of the energy released during the partial burning process into electrical energy by contacting the outer wall of the anode of the solid oxide fuel cell (the outer wall of the tubular solid oxide fuel cell).
[0035] Since the present invention adds a new energy conversion pathway on the basis of existing energy conversion, thereby improving the energy utilization efficiency of catalyst-carrying coke, and further improving the quality of energy utilization, it also solves the problem of low energy utilization rate of medium-pressure steam in the prior art.
[0036] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, and to make the above and other purposes, technical features and advantages of the present invention easier to understand, one or more preferred embodiments are listed below and described in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0038] Figure 1 It is a schematic diagram of the structure of the energy conversion device for catalytic cracking described in the present invention;
[0039] Figure 2 is a schematic structural diagram of a cross section of the tubular solid oxide fuel cell of the present invention;
[0040] Figure 3 It is a schematic structural diagram of the circular arrangement of the tubular solid oxide fuel cell described in the present invention;
[0041] Figure 4 It is a structural schematic diagram of the matrix arrangement of the tubular solid oxide fuel cells described in the present invention;
[0042] Figure 5 It is a step diagram of the catalytic cracking energy conversion method described in the present invention. DETAILED DESCRIPTION
[0043] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.
[0044] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.
[0045] In this document, the terms "first", "second", etc. are used to distinguish two different elements or parts, and are not used to limit a specific position or relative relationship. In other words, in some embodiments, the terms "first", "second", etc. can also be interchangeable.
[0046] Embodiment 1
[0047] At present, fuel cells are mainly solid oxide fuel cells (SOFC), and direct carbon solid oxide fuel cells (DC-SOFC) among solid oxide fuel cells directly use solid carbon-containing fuels; solid carbon-containing fuels have a wider source than gas fuels, and can use coal, biomass, coke, etc. as fuels, and have high energy density, are safer, and are easy to store and transport.
[0048] However, direct carbon solid oxide fuel cells have the following problems: first, the reaction activity of the carbon fuel itself is lower than that of the gas, and the contact with the positive electrode of the battery is insufficient; second, when solid carbon-containing fuel is directly used as fuel, solid carbon (carbon particles) is difficult to feed, so it is difficult to use; in addition, the electricity conversion rate of direct carbon solid oxide fuel cells is lower than that of gaseous carbon fuels (hydrogen, etc.); these factors limit the performance and application scenarios of direct carbon solid oxide fuel cells.
[0049] After research, the inventors found that in the catalytic cracking equipment, the catalyst entering the regenerator not only has a high temperature, but also has the form of particles with coke attached to it; for solid oxide fuel cells (SOFCs), high-temperature and granular carbon-carrying catalysts have very high reaction activity, that is, the carbon-carrying catalyst entering the regenerator is very suitable for use as a solid carbon-containing fuel for solid oxide fuel cells.
[0050] On the other hand, in the prior art, the method of utilizing the energy generated during the coking process (generating medium-pressure steam and then generating electricity through a turbine) has low power generation efficiency, which results in energy loss and low energy utilization.
[0051] Based on the above understanding, in order to improve the energy utilization quality of catalytic cracking coke, such as Figure 1 As shown, an energy conversion device for catalytic cracking is provided in an embodiment of the present invention, comprising: a reactor 100, a regenerator 200 and a solid oxide fuel cell 4;
[0052] A plurality of solid oxide fuel cells 4 are longitudinally arranged in the cavity of the dense phase zone of the regenerator 200; a catalyst raw material inlet 1 is provided at the bottom of the side wall of the dense phase zone 3; a regenerated catalyst outlet 9 is provided at the top of the side wall of the dense phase zone 3; the catalyst raw material inlet 1 and the regenerated catalyst outlet 9 of the regenerator 200 are respectively connected to the reactor 100; a regenerated flue gas outlet 6 is provided at the top of the dilute phase zone 2 of the regenerator 200; an air supply port 5 is provided at the bottom of the regenerator 200; an air distribution plate 7 for fixing the lower part of each solid oxide fuel cell 4 is provided at the bottom of the dense phase zone 3; a fixing mechanism 8 for fixing the upper part of each solid oxide fuel cell 4 is provided at the junction of the dilute phase zone 2 and the dense phase zone 3.
[0053] In the embodiment of the present invention, the solid oxide fuel cell 4 is integrated with the catalytic cracking equipment (including: reactor 100 and regenerator 200), specifically:
[0054] In the embodiment of the present invention, in order to dispose the solid oxide fuel cell 4 in the regenerator 200, on the one hand, the original air distribution plate 7 is used to fix the lower part of the solid oxide fuel cell 4, and on the other hand, a fixing mechanism 8 is set at the junction of the dilute phase zone 2 and the dense phase zone 3 to fix the upper part of the solid oxide fuel cell 4.
[0055] After the carbon-carrying catalyst with coke particles attached in the reactor 100 is transported as a raw material to the dense phase zone 3 of the regenerator 200, the air transported by the main fan of the regenerator through the air supply port 5 at the bottom of the regenerator can blow the carbon-carrying catalyst particles into a fluid state, so that the fluid carbon-carrying catalyst particles will continuously collide and contact with the anode surface of the solid oxide fuel cell 4 to generate electrical energy; at the same time, the carbon-carrying catalyst particles in the rising process become regenerated catalysts after the burning is completed; the regenerated catalyst returns to the reactor 100 through the regenerated catalyst outlet 9; the high-temperature regenerated flue gas generated during the burning process can be transported to the flue gas turbine through the regenerated flue gas outlet 6.
[0056] In the embodiment of the present invention, on the one hand, the temperature of the carbon-carrying catalyst particles in the regenerator 200 is very high, and therefore has a very high reaction activity; on the other hand, the embodiment of the present invention also blows the carbon-carrying catalyst particles into a fluid state so that the number of impact contacts with the anode surface of the solid oxide fuel cell becomes greater, and thus the contact will be more complete, thereby enabling the solid oxide fuel cell 4 in the embodiment of the present invention to obtain a very high power generation conversion rate.
[0057] The fixing mechanism 8 in the embodiment of the present invention may be configured as a hollow structure or a mesh structure to improve the flowability of the gas in the regenerator 200 .
[0058] Preferably, in an embodiment of the present invention, the inner diameter of the cavity of the dense phase zone 3 of the regenerator 200 is smaller than the inner diameter of the cavity of the dilute phase zone 2. This will not only increase the contact frequency and contact probability between the tubular solid oxide fuel cell 4 and the carbon-carrying catalyst particles, but will also be beneficial for the carbon-carrying catalyst particles to form a flow state.
[0059] Furthermore, in an embodiment of the present invention, the air supply port 5 may be provided with an air volume control mechanism, so that the air volume entering the dense phase zone 3 of the regenerator 200 may be controlled in real time. In actual applications, the air volume control mechanism may be provided on the main fan of the regenerator, or may be provided separately from the main fan of the regenerator.
[0060] The air distribution plate 7 in the embodiment of the present invention can support the bed material, evenly distribute the air and ensure that the carbon-carrying catalyst particles are in a normal fluidized state; the connection between the tubular solid oxide fuel cell and the air distribution plate 7 can be sealed with high-temperature sealant, and the high temperature environment will not affect the connection, which can make the connection more secure.
[0061] In an embodiment of the present invention, the regeneration flue gas outlet 6 can be connected to a preset flue gas turbine; the high-temperature regeneration flue gas generated in the dense phase zone 3 of the regenerator 200 enters the dilute phase zone 2 of the regenerator 200 through the gas through holes of the fixing mechanism 8, and is transported to the flue gas turbine after cyclone separation; this makes full use of the high-temperature steam in the regenerator 200 and further improves the quality of energy utilization.
[0062] Furthermore, in order to maintain a high reaction activity of the carbon-carrying catalyst particles, in the embodiment of the present invention, the heat in the regenerator 200 can also be maintained at a temperature between 650°C and 850°C.
[0063] Preferably, the solid oxide fuel cell 4 in the embodiment of the present invention may be a direct carbon solid oxide fuel cell; the solid oxide fuel cell 4 may also be a tubular solid oxide fuel cell;
[0064] like Figure 2 As shown, the tube wall of the tubular solid oxide fuel cell in the embodiment of the present invention may include a porous anode 41 as an outer layer, a solid oxide electrolyte 42 as an intermediate layer, and a porous cathode 43 as an inner layer.
[0065] During operation, the main fan of the regenerator delivers air through the air supply port 5 at the bottom of the regenerator. Part of the air passes through the porous cathode 43 on the inner wall of the pipe of the tubular solid oxide fuel cell to supply oxygen to the fuel cell; the other part of the air passes through the air distribution plate into the dense phase zone 3 to blow the carbon-carrying catalyst particles to fluidize them and participate in the oxygen supply during the charring process.
[0066] In practical applications, refer to Figure 3 and Figure 4 The arrangement of the plurality of tubular solid oxide fuel cells 4 in the embodiment of the present invention may be: circular, or rectangular; in specific applications, Figure 3 9 circularly arranged tubular solid oxide fuel cells are shown; Figure 4 The figure shows nine rectangularly arranged tubular solid oxide fuel cells; these two arrangements can also improve the uniformity of each tubular solid oxide fuel cell 4 in the dense phase region 3, thereby further improving the power conversion rate.
[0067] In practical applications, for a tubular solid oxide fuel cell, the inner wall of the pipe serves as the cathode, and obtaining sufficient air can fully improve the power conversion rate. For this reason, in an embodiment of the present invention, a trumpet-shaped air collecting mechanism can be further provided at the lower end of the tubular solid oxide fuel cell; in this way, through the trumpet-shaped air collecting mechanism, more air can pass through the cathode 43 of the tubular solid oxide fuel cell, thereby improving the power conversion rate.
[0068] In addition, in an embodiment of the present invention, corresponding pipeline connections can be set for each tubular solid oxide fuel cell to separately deliver the air required by the cathode 43 through the air supply device; in actual applications, the air supply device can be set separately, or the regenerator main fan can be used to supply air by setting a branch pipeline.
[0069] In summary, in order to use the high-temperature carbon-carrying catalyst input into the regenerator as the solid carbon-containing fuel of the solid oxide fuel cell to convert the chemical energy and part of the thermal energy of the coke carried by the catalyst into electrical energy, the solid oxide fuel cell is arranged in the regenerator of the catalytic cracking equipment in the embodiment of the present invention. In this way, when the carbon-carrying catalyst with coke particles attached to it in the reactor is transported to the dense phase zone of the regenerator as a raw material, the carbon-carrying catalyst particles are blown into a fluid state to increase the contact amount and contact probability between the carbon-carrying catalyst particles and the anode of the solid oxide fuel cell, thereby improving the conversion efficiency of electrical energy conversion; since the carbon-carrying catalyst in the embodiment of the present invention not only has a high temperature and is in a granular form, it has a very high reaction activity, so the fluidized carbon-carrying catalyst particles can convert the chemical energy and part of the thermal energy of the coke carried by the catalyst into electrical energy by contacting the outer wall of the anode of the solid oxide fuel cell (the outer wall of the tubular solid oxide fuel cell).
[0070] Since the embodiment of the present invention adds a new energy conversion pathway on the basis of existing energy conversion, the energy utilization efficiency of the catalyst-carrying coke is improved, and the quality of energy utilization is further improved, thereby solving the problem of low energy utilization of medium-pressure steam in the prior art.
[0071] Embodiment 2
[0072] On the basis of the above device embodiment, another aspect of the present invention is to provide an energy conversion method for catalytic cracking, such as Figure 5 As shown, the steps include:
[0073] S11, delivering air to the cathode of the solid oxide fuel cell and blowing the carbon-carrying catalyst particles delivered to the dense phase region of the regenerator into a fluid state;
[0074] In an embodiment of the present invention, after the carbon-carrying catalyst with coke particles attached in the reactor 100 is transported as a raw material to the dense phase zone 3 of the regenerator 200, the air transported by the regenerator main fan through the air supply port 5 at the bottom of the regenerator can blow the carbon-carrying catalyst particles into a fluid state. At the same time, the transported air can also transport air to the cathode of the solid oxide fuel cell.
[0075] S12, controlling the temperature in the regenerator cavity to a preset temperature;
[0076] In the embodiment of the present invention, the temperature in the cavity of the regenerator 200 is controlled to be a preset temperature, which may include: 650°C-850°C. When the temperature in the cavity of the regenerator 200 is within this range, the carbon-carrying catalyst particles can maintain a high reaction activity.
[0077] S13, storing or transmitting the electrical energy generated by the solid oxide fuel cell to a preset load.
[0078] The flowing carbon-carrying catalyst particles will continuously collide with the anode surface of the solid oxide fuel cell 4 to generate electrical energy; at the same time, the carbon-carrying catalyst particles in the rising process will become regenerated catalysts after being burned; the regenerated catalysts will return to the reactor 100 through the regenerated catalyst outlet 9.
[0079] S14, conveying the high-temperature regeneration flue gas to a preset flue gas turbine through a regeneration flue gas outlet;
[0080] The high-temperature regeneration flue gas generated during the coking process can be transported to the flue gas turbine through the regeneration flue gas outlet 6.
[0081] In the embodiment of the present invention, on the one hand, the temperature of the carbon-carrying catalyst particles in the regenerator 200 is very high, and therefore has a very high reaction activity; on the other hand, the embodiment of the present invention also blows the carbon-carrying catalyst particles into a fluid state so that the number of impact contacts with the anode surface of the solid oxide fuel cell becomes greater, and thus the contact will be more complete, thereby enabling the solid oxide fuel cell 4 in the embodiment of the present invention to obtain a very high power generation conversion rate.
[0082] In summary, in order to use the high-temperature carbon-carrying catalyst input into the regenerator as the solid carbon-containing fuel of the solid oxide fuel cell, and to directly convert the energy of the coke carried by the catalyst and part of the thermal energy into electrical energy, the solid oxide fuel cell is arranged in the regenerator of the catalytic cracking equipment in the embodiment of the present invention. In this way, when the carbon-carrying catalyst with coke particles attached to it in the reactor is transported to the dense phase zone of the regenerator as a raw material, the carbon-carrying catalyst particles are blown into a fluid state to increase the contact amount and contact probability between the carbon-carrying catalyst particles and the anode of the solid oxide fuel cell, thereby improving the conversion efficiency of electrical energy conversion; since the carbon-carrying catalyst in the embodiment of the present invention not only has a high temperature and is granular, but also has a high reaction activity, the fluidized carbon-carrying catalyst particles can directly convert the energy of the coke carried by the catalyst and part of the thermal energy into electrical energy by contacting the outer wall of the anode of the solid oxide fuel cell (the outer wall of the tubular solid oxide fuel cell).
[0083] Since the embodiment of the present invention adds a new energy conversion pathway on the basis of existing energy conversion, the energy utilization efficiency of the catalyst-carrying coke is improved, and the quality of energy utilization is further improved, thereby solving the problem of low energy utilization of medium-pressure steam in the prior art.
[0084] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be 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 the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An energy conversion device for catalytic cracking, characterized in that, comprising: a reactor, a regenerator and a solid oxide fuel cell; a plurality of the solid oxide fuel cells are longitudinally arranged in the cavity of the dense phase region of the regenerator; a catalyst raw material inlet is provided at the bottom of the side wall of the dense phase region; a regenerated catalyst outlet is provided at the top of the side wall of the dense phase region; the catalyst raw material inlet and the regenerated catalyst outlet of the regenerator are respectively connected to the reactor; a regenerated flue gas outlet is provided at the top of the dilute phase region of the regenerator; an air supplement port is provided at the bottom of the regenerator; the lower parts of the solid oxide fuel cells are respectively fixedly connected to a distributor plate provided at the bottom of the dense phase region; a fixing mechanism for fixing the upper parts of the solid oxide fuel cells is provided at the boundary position between the dilute phase region and the dense phase region.
2. The energy conversion device for catalytic cracking according to claim 1, characterized in that, the solid oxide fuel cell comprises: a direct carbon solid oxide fuel cell.
3. The energy conversion device for catalytic cracking according to claim 1 or 2, characterized in that, the solid oxide fuel cell comprises: a tubular solid oxide fuel cell.
4. The energy conversion device for catalytic cracking according to claim 3, characterized in that, the tube wall of the tubular solid oxide fuel cell comprises: a porous anode on the outer layer, a solid oxide electrolyte in the middle layer, and a porous cathode on the inner layer.
5. The energy conversion device for catalytic cracking according to claim 1, characterized in that, the fixing mechanism is a hollow structure or a mesh structure.
6. The energy conversion device for catalytic cracking according to claim 1, characterized in that, the solid oxide fuel cell is fixedly connected to the distributor plate through a high-temperature sealant.
7. The energy conversion device for catalytic cracking according to claim 3, characterized in that, a horn-shaped air collecting mechanism is provided at the lower end of the tubular solid oxide fuel cell.
8. The energy conversion device for catalytic cracking according to claim 3, characterized in that, further comprising: the lower ends of the tubular solid oxide fuel cells are respectively connected to a gas supply device outside the regenerator through pipelines.
9. The energy conversion device for catalytic cracking according to claim 3, characterized in that, the arrangement mode of the tubular solid oxide fuel cells includes: circumferential type, or rectangular type.
10. The energy conversion device for catalytic cracking according to claim 1, characterized in that, the inner diameter of the cavity in the dense phase region is smaller than the inner diameter of the cavity in the dilute phase region.
11. The energy conversion device for catalytic cracking according to claim 1, characterized in that, further comprising: an air volume control mechanism for controlling the air intake volume of the air supplement port.
12. The energy conversion device for catalytic cracking according to claim 1, characterized in that, the regenerated flue gas outlet is connected to a preset gas turbine.
13. An energy conversion method for catalytic cracking, used for the energy conversion device for catalytic cracking according to any one of claims 1 to 12, characterized in that, Including the steps: S11. Deliver air to the cathode of the solid oxide fuel cell and fluidize the carbon-carrying catalyst particles transported to the dense phase region of the regenerator; S12. Control the temperature inside the regenerator cavity to a preset temperature; S13. Store or deliver the electric energy generated by the solid oxide fuel cell to a preset load; S14. Deliver the high-temperature regenerated flue gas to a preset gas turbine through the regenerated flue gas outlet.
14. The energy conversion method for catalytic cracking according to claim 13, wherein, the preset temperature includes: 650°C - 850°C.