Electric field self-driven thermoelectric catalytic device

Abstract

The utility model relates to catalytic reactor technical field especially is a kind of electric field self-driving thermoelectric catalytic device, including, fixed passageway, it includes fixed tube group, glass tube is equipped in the fixed tube group;Fixed piece is equipped in the glass tube, two ends of the fixed piece can connect electrode;The fixed piece and glass tube form test space, test sample can be accommodated in test space, can satisfy the accurate evaluation of catalytic performance of multiple size carrier, by being designed as array hole pressure head inside;By directly heating bed layer using joule heating effect, reduce the loss in heat conduction process, can greatly improve reaction efficiency;At the same time, cooperate water cooling equipment and gas purging, can realize rapid cooling, can effectively avoid the influence reaction effect or lead to equipment damage due to temperature is too high.

Description

Technical Field

[0001] This utility model relates to the field of catalytic reactor technology, and in particular to an electric field self-driven thermoelectric catalytic device. Background Technology

[0002] The electric field-driven thermoelectric catalytic performance evaluation device utilizes the synergistic effect of a localized Joule heating effect generated by an electric current passing through a conductive catalyst or support, combined with a surface electric field, to induce a catalytic reaction system that achieves efficient target reactions (such as small molecule activation, energy conversion, or pollutant degradation) under the coupling effect of temperature and electric field gradients. However, current testing devices can only test small-sized supports (height < 20 mm). Small-sized catalysts suffer from uneven current distribution or differences in material thermal conductivity, leading to localized overheating or temperature inconsistencies, making it difficult to evaluate actual performance. Currently, the pressure heads of the upper and lower rods are solid structures, resulting in ineffective gas dispersion and affecting reactant mass transfer. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] In view of the problems existing in the above or prior art, this utility model is proposed.

[0005] Therefore, the purpose of this invention is to provide a field-driven thermoelectric catalytic device.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: including,

[0007] A fixed channel, comprising a fixed tube assembly, wherein a glass tube is provided in the fixed tube assembly;

[0008] The glass tube is equipped with a fixing component, and the two ends of the fixing component can be connected to electrodes;

[0009] The fixture and the glass tube form a test space, which can accommodate the test sample.

[0010] In a preferred embodiment of the electric field self-driven thermoelectric catalytic device of this utility model, a double-layer steel pipe is sleeved on the outside of the glass tube, and a coolant receiving cavity is provided inside the double-layer steel pipe.

[0011] In a preferred embodiment of the electric field self-driven thermoelectric catalytic device of this utility model, the fixed pipe assembly includes an upper flange pipe sleeved on the top of the double-layer steel pipe, and a lower flange pipe sleeved on the bottom of the double-layer steel pipe.

[0012] In a preferred embodiment of the electric field self-driven thermoelectric catalytic device of this utility model, the fixing member includes an upper guide rod inserted into the upper flange tube and a lower guide rod inserted into the lower flange tube, wherein the ends of the upper guide rod and the lower guide rod that are close to each other extend into the glass tube.

[0013] The upper guide rod and the lower guide rod are respectively connected to a pressure head at their respective ends, and the pressure head has a hole.

[0014] In a preferred embodiment of the electric field self-driven thermoelectric catalytic device of this utility model, the device further includes a connector, which comprises two sets of copper noses, the two sets of copper noses being respectively located at the ends of the upper guide rod and the lower guide rod that are far apart.

[0015] In a preferred embodiment of the electric field self-driven thermoelectric catalytic device of this utility model, a polytetrafluoroethylene tube is fixedly connected to both the top end of the upper flange tube and the bottom end of the lower flange tube.

[0016] In a preferred embodiment of the electric field self-driven thermoelectric catalytic device of this utility model, the double-layer steel pipe is provided with a coolant inlet and a coolant outlet.

[0017] In a preferred embodiment of the electric field self-driven thermoelectric catalytic device of this utility model, the upper flange tube is provided with a vacuum port and a reaction gas outlet.

[0018] In a preferred embodiment of the electric field self-driven thermoelectric catalytic device of this utility model, the lower flange pipe is provided with a raw material gas inlet.

[0019] A preferred embodiment of the electric field self-driven thermoelectric catalytic device of this utility model includes: a mounting component, which includes a base and a back plate fixedly disposed at one top end of the base;

[0020] The fixed tube assembly is fixedly installed on one side of the back plate.

[0021] The beneficial effects of this electric field-driven thermoelectric catalytic device are as follows: it can accurately evaluate the catalytic performance of various sized supports; by designing the internal structure as an array of pore pressure heads, it meets the needs of gas mass transfer, resulting in rapid heating rate, high heating efficiency, and precise temperature control; by directly heating the bed using the Joule heating effect, it reduces heat loss during heat conduction, fully utilizes electrical energy, and greatly improves reaction efficiency; simultaneously, with the aid of water cooling equipment and gas purging, it can achieve rapid cooling, effectively preventing excessive temperature from affecting the reaction effect or causing equipment damage; using clean energy such as electricity to power the reaction is more environmentally friendly and cost-effective; the support has good structural strength and certain corrosion resistance, resulting in high reliability, good stability, and wide applicability during the reaction. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0023] Figure 1 This is a left view of an electric field-driven thermoelectric catalytic device.

[0024] Figure 2 This is a cross-sectional view of an electric field-driven thermoelectric catalytic device.

[0025] Figure 3 This is a schematic diagram of an electric field-driven thermoelectric catalytic device.

[0026] Figure 4 This is a schematic diagram of the pressure head. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0030] Example 1

[0031] Reference Figures 1-3 This is the first embodiment of the present invention, which provides an electric field-driven thermoelectric catalytic device, comprising,

[0032] Fixed channel 1 includes a fixed tube assembly 11, in which a glass tube 12 is provided;

[0033] The glass tube 12 is provided with a fixing member 2, and the two ends of the fixing member 2 can be connected to electrodes;

[0034] The fixing member 2 and the glass tube 12 form a test space 13, which can accommodate the test sample.

[0035] By placing the test sample in the test space 13 inside the glass tube 12, and when electrodes are connected to both ends of the fixture 2, electricity can be passed through. When the current flows from one end of the fixture 2 to the other end, the current heats the test sample. The fixture 2 allows the size of the test space 13 to be adjusted so that the catalytic performance of multi-size carriers can be evaluated.

[0036] Furthermore, a double-layer steel pipe 14 is sleeved on the outside of the glass tube 12, and a coolant receiving cavity 141 is provided inside the double-layer steel pipe 14.

[0037] A double-layer steel pipe 14 is sleeved on the outside of the glass tube 12, and the inner wall of the double-layer steel pipe 14 is attached to the outer wall of the glass tube 12. Coolant can be injected into the coolant receiving cavity 141 provided inside the double-layer steel pipe 14. During the catalytic evaluation process, the coolant can transfer heat to the glass tube 12 through the double-layer steel pipe 14, thereby allowing the coolant to act on the glass tube 12 to cool it down, thus preventing the glass tube 12 from overheating and avoiding damage to the glass tube 12.

[0038] Furthermore, the fixed pipe assembly 11 includes an upper flange pipe 111 sleeved on the top of the double-layer steel pipe 14, and a lower flange pipe 112 sleeved on the bottom of the double-layer steel pipe 14.

[0039] The upper flange 111 is fitted onto the top of the double-layer steel pipe 14, and the lower flange 112 is fitted onto the bottom of the double-layer steel pipe 14. The outer wall of the double-layer steel pipe 14 is in contact with the inner wall of the upper flange 111 and the lower flange 112. At the same time, retaining rings are fixedly provided on the inner walls of the upper flange 111 and the lower flange 112. The two ends of the glass tube 12 and the double-layer steel pipe 14 abut against the retaining rings inside the upper flange 111 and the lower flange 112, thereby achieving the effect of sealing the ends of the glass tube 12 and the double-layer steel pipe 14.

[0040] Furthermore, the fastener 2 includes an upper guide rod 21 inserted into the upper flange tube 111 and a lower guide rod 22 inserted into the lower flange tube 112, with the ends of the upper guide rod 21 and the lower guide rod 22 extending into the glass tube 12.

[0041] Among them, the upper guide rod 21 and the lower guide rod 22 are close to each other and are fixedly connected to a pressure head 23, and the pressure head 23 has a hole;

[0042] The upper flange tube 111 is provided with a detachable fixing component at the top, so that the upper guide rod 21 is fixedly connected to the top of the upper flange tube 111. The lower flange tube 112 is also provided with a detachable fixing component at the bottom, so that the lower guide rod 22 can be fixedly connected to the bottom of the lower flange tube 112. Since the upper guide rod 21 and the lower guide rod 22 are both connected by detachable fixing components, their lengths in the glass tube 12 can be adjusted. The adjustment of the upper guide rod 21 and the lower guide rod 22 can drive the pressure head 23 to move, thereby adjusting the size of the test space 13 in the glass tube 12.

[0043] When it is necessary to place the carrier into the test, the detachable fixing component is removed from the end of the upper flange tube 111, and the glass tube 12 is taken out together with the upper guide rod 21, so that the top of the test space 13 is opened, and then the test sample is placed into the test space 13.

[0044] Meanwhile, both pressure heads 23 have multiple sets of holes to meet the gas mass transfer requirements when evaluating the performance of the carrier. During the test, the pressure head 23 contacts the surface of the test sample, and the upper guide rod 21 and the lower guide rod 22 are respectively connected to the positive and negative electrodes, so that the current passes through the sample to heat it and carry out the catalytic reaction.

[0045] Furthermore, the double-layer steel pipe 14 is provided with a coolant inlet 142 and a coolant outlet 143; the coolant can enter the coolant holding space from the coolant inlet 142, and the coolant after exchanging heat with the glass tube 12 and heating up is discharged from the double-layer steel pipe 14 through the coolant outlet 143.

[0046] Furthermore, the upper flange 111 is provided with a vacuum port 114 and a reaction gas outlet 113; the lower flange 112 is provided with a raw material gas inlet 115; the vacuum port 114 is used to perform vacuum gas exchange inside the glass tube 12, reduce other residues in the test space 13, and avoid oxidation of the copper electrode of the carrier by oxygen; the reaction gas outlet 113 is used to discharge the gas generated during catalytic evaluation, and the raw material gas inlet 115 allows the gas used for catalytic reaction to enter the test space 13.

[0047] In summary, during use, the silicon carbide support with surface-impregnated catalyst is placed into the test space 13 inside the glass tube 12, and the pressure head 23 presses the silicon carbide support, that is, the upper guide rod 21 and the lower guide rod 22 can allow current to pass through the silicon carbide support; in order to make better contact, foamed carbon can be added between the pressure head 23 and the silicon carbide support.

[0048] Connect the positive and negative terminals of the DC power supply to the ends of the upper guide rod 21 and the lower guide rod 22 that are far apart from each other. Turn on the DC power supply and adjust the applied current and voltage. Current flows through the surface of the silicon carbide carrier conductive material. Utilizing its own Joule effect, it can achieve rapid heating in a very short time, thereby improving the reaction efficiency.

[0049] The reaction gas is introduced into the glass tube 12 through the raw material gas inlet 115, and a catalytic reaction occurs on the surface of the silicon carbide carrier to achieve material synthesis. The reaction products are discharged from the reaction gas outlet 113. After the reaction is completed, the glass tube 12 can be rapidly cooled by purging with coolant or gas in the coolant container 141.

[0050] This reactor, by adjusting the distance between the upper and lower conductive rods, can meet the evaluation and testing needs of carriers of various sizes, facilitating the accurate evaluation of the catalytic performance of carriers of different sizes. By designing the internal array of pore pressure heads 23, it meets the requirements of gas mass transfer and has the effects of fast heating rate, high heating efficiency, and precise temperature control. For conductive materials, it can utilize their own Joule effect to heat the material to extremely high temperatures (100-2000℃) in a very short time (0-10S). By directly heating the bed using the Joule heating effect, the loss in the heat conduction process is reduced, and electrical energy is fully utilized, which can greatly improve the reaction efficiency and reduce the operating cost.

[0051] Simultaneously, with the aid of water cooling equipment and gas purging, rapid cooling can be achieved, effectively preventing the reaction from being affected or the equipment from being damaged due to excessive temperature; the integrated catalytic reactor integrates the catalyst and the reactor into one unit, which, compared with traditional particulate catalysts, avoids axial or radial temperature differences in the catalyst, eliminates bed pressure drop, and makes the reaction process more stable; it uses clean energy, electricity, to provide energy for the reaction, making it more environmentally friendly and cost-effective, and the carrier has good structural strength and certain corrosion resistance, resulting in high reliability, good stability, and wide applicability in the reaction.

[0052] Example 2

[0053] Reference Figures 1-3 This is the second embodiment of the present utility model. Unlike the previous embodiment, this embodiment also includes a connector 3. The connector 3 includes two sets of copper lugs 31, which are respectively located at the ends of the upper guide rod 21 and the lower guide rod 22 that are far apart.

[0054] Both the upper guide rod 21 and the lower guide rod 22 are fixedly connected to a copper lug 31 at one end away from each other. By connecting the positive and negative electrodes to the copper lug 31, the upper guide rod 21 and the lower guide rod 22 can be energized, and the current can pass through the test sample. The copper lug 31 makes it easier to connect the upper guide rod 21 and the lower guide rod 22 to the power supply.

[0055] Furthermore, a polytetrafluoroethylene (PTFE) tube 32 is fixedly connected to the top of the upper flange tube 111 and the bottom of the lower flange tube 112; the PTFE tube 32 is sleeved on the outside of the upper guide rod 21 or the lower guide tube, and the PTFE tube 32 is used to export the substances generated during the catalytic process.

[0056] Furthermore, the upper flange pipe 111 is also provided with a pressure relief port 116 to prevent excessive internal pressure of the equipment, and the lower flange pipe 112 is connected with a diaphragm anti-corrosion pressure gauge 117, which is used to measure the pressure of special media such as corrosive, high viscosity, easy crystallization or containing solid particles.

[0057] Example 3

[0058] Reference Figures 1-4 This is the third embodiment of the present utility model. Unlike the previous embodiment, this embodiment also includes a mounting component 4, which includes a base 41 and a back plate 42 fixedly disposed at one top end of the base 41.

[0059] Among them, the fixed pipe assembly 11 is fixedly installed on one side of the back plate 42;

[0060] An upper flange fixing bracket 43 and a lower flange fixing bracket 44 are fixedly provided on the back plate 42. The upper flange fixing bracket 43 and the lower flange fixing bracket 44 are located in the through groove of the back plate 42. The upper flange pipe 111 is fixed on the upper flange fixing bracket 43, and the lower flange pipe 112 is fixed on the lower flange fixing bracket 44, thereby fixing the position of the reactor. The bottom end of the base 41 is provided with an adjustable pad 45, which allows the base 41 to be adjusted to a flat state.

[0061] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0062] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0063] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0064] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An electric field-driven thermoelectric catalytic device, characterized in that: include, A fixed channel (1) includes a fixed tube assembly (11) in which a glass tube (12) is provided; The glass tube (12) is provided with a fixing member (2), and the two ends of the fixing member (2) can be connected to electrodes; The fixing member (2) and the glass tube (12) form a test space (13), which can accommodate the test sample.

2. The electric field-driven thermoelectric catalytic device according to claim 1, characterized in that: The glass tube (12) is fitted with a double-layer steel tube (14) on the outside, and the double-layer steel tube (14) is provided with a coolant receiving cavity (141).

3. The electric field-driven thermoelectric catalytic device according to claim 2, characterized in that: The fixed pipe assembly (11) includes an upper flange pipe (111) sleeved on the top of the double-layer steel pipe (14), and a lower flange pipe (112) sleeved on the bottom of the double-layer steel pipe (14).

4. The electric field-driven thermoelectric catalytic device according to claim 3, characterized in that: The fastener (2) includes an upper guide rod (21) inserted into the upper flange tube (111) and a lower guide rod (22) inserted into the lower flange tube (112), with the ends of the upper guide rod (21) and the lower guide rod (22) extending into the glass tube (12). Among them, the upper guide rod (21) and the lower guide rod (22) are fixedly connected to a pressure head (23), and the pressure head (23) has a hole.

5. The electric field-driven thermoelectric catalytic device according to claim 4, characterized in that: It also includes a connector (3), which includes two sets of copper lugs (31), which are respectively located at the ends of the upper guide rod (21) and the lower guide rod (22) that are far apart.

6. The electric field-driven thermoelectric catalytic device according to claim 5, characterized in that: The top end of the upper flange (111) and the bottom end of the lower flange (112) are both fixedly connected to polytetrafluoroethylene (PTFE) tubes (32).

7. The electric field-driven thermoelectric catalytic device according to claim 6, characterized in that: The double-layer steel pipe (14) has a coolant inlet (142) and a coolant outlet (143).

8. The electric field-driven thermoelectric catalytic device according to claim 7, characterized in that: The upper flange pipe (111) is provided with a vacuum port (114) and a reaction gas outlet (113).

9. The electric field-driven thermoelectric catalytic device according to claim 8, characterized in that: The lower flange pipe (112) is provided with a raw material gas inlet (115).

10. The electric field-driven thermoelectric catalytic device according to claim 8 or 9, characterized in that: It also includes a mounting component (4), which includes a base (41) and a back plate (42) fixedly disposed at one top end of the base (41); The fixed tube assembly (11) is fixedly installed on one side of the back plate (42).

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