A continuous catalyst preparation system and method

Abstract

The present invention provides a catalyst continuous preparation system and method. The catalyst continuous preparation system includes a first feeding and discharging area, a first folding area, a Joule heating area, a second folding area and a second feeding and discharging area which are sequentially arranged along the conveying direction; an upper conductive substrate and a lower conductive substrate which are parallel to each other and independently transported are arranged between the first feeding and discharging area and the second feeding and discharging area. By designing the structure of the catalyst continuous preparation system, the present invention avoids the splashing of samples under Joule heat shock, realizes automatic feeding and discharging in the continuous preparation process, and ensures the stable and large-scale production of catalysts.

Description

Technical Field

[0001] The present invention relates to the field of chemical engineering technology, specifically to a preparation system of catalysts, and particularly to a continuous preparation system and method of catalysts. Background Art

[0002] As an emerging ultrafast synthesis technology, Joule heating can reach extremely high temperatures within milliseconds, thus providing new possibilities for the rapid synthesis of catalysts. Compared with traditional catalyst preparation methods, this method has the advantages of low energy consumption, short reaction time, and high efficiency. A series of progress has been made in the application of Joule heating technology in catalyst synthesis. This includes the synthesis of defect modulation, heterostructure construction, single-atom catalysts, bimetallic alloy catalysts, high-entropy alloy (HEA) catalysts, and metastable catalysts.

[0003] CN118792692A discloses a rapid preparation method and application of a calcium ion-modified NiSe2 / FeSe2 bicrystalline phase catalyst. The preparation method includes introducing calcium ions during the complexation reaction of potassium ferricyanide and nickel nitrate, and then preparing the calcium ion-modified NiSe2 / FeSe2 bicrystalline phase catalyst by means of Joule heat treatment technology. The Joule heat treatment technology disclosed in this patent requires placing the sample in the graphite sample stage groove of the Joule heating device, and using the Joule heat effect to heat the sample stage, so as to achieve the purpose of heating the sample. After each heating on the sample stage is completed, the sample stage needs to be taken out, cleaned, and then reloaded with a new sample. However, the single-sample processing dose of the equipment disclosed in this patent is very limited, and it is only suitable for small-batch production occasions, and it is difficult to keep the reaction conditions exactly the same for different batches, which results in the difficulty of maintaining consistent performance of the catalysts produced in different batches.

[0004] CN117049519A discloses a continuous preparation method and continuous preparation equipment for few-walled carbon nanotubes. This equipment uses the transient high temperature generated by the transient current formed after the conductive powder contacts the electrode to achieve the purpose of heating. Therefore, the equipment disclosed in this patent can only heat conductive powders and cannot heat insulating powders or liquids. And its electrode is in direct contact with the sample, which is extremely easy to cause sample contamination, and under the impact of transient high temperature, it is extremely easy to cause sample splashing, affecting the sample yield and heating effect.

[0005] CN117403269A discloses a method and device for macroscale preparation of catalysts. This invention utilizes the Joule heat effect generated when an electric current passes through a resistance component, selects a carbonaceous matrix commonly used in electrocatalytic applications, and realizes the macroscale preparation of catalysts. However, when the device disclosed in this patent is used, it is necessary to load metal precursor ions on the carbonaceous substrate, and only catalysts integrated with the carbonaceous substrate can be obtained, and it is difficult to separate the catalyst from the carbonaceous substrate, which limits the application of the catalyst.

[0006] Although the Joule heating technology shows great potential in catalyst synthesis, there is still much room for improvement in the device design in terms of controllability, continuity, rapidity, stability, and wide applicability.

[0007] Therefore, it is of great significance to provide a catalyst preparation system based on Joule heating that is controllable, continuous, rapid, stable, and has a wide applicability range. Summary of the Invention

[0008] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a continuous catalyst preparation system and method. By designing the structure of the continuous catalyst preparation system, the present invention uses an upper conductive substrate and a lower conductive substrate to wrap the sample, avoiding the splashing of the sample under the impact of Joule heat and making the sample heat more evenly; by using the folding devices arranged in opposite directions along the conveying direction in the first folding area and the second folding area, the two-way automatic merging and separation of the upper conductive substrate and the lower conductive substrate are realized, and then the automatic feeding and discharging in the continuous preparation process are realized, ensuring the stable and large-scale production of the catalyst.

[0009] To achieve the purpose of this invention, the following technical solutions are adopted:

[0010] In the first aspect, the present invention provides a continuous catalyst preparation system, which includes a first feeding and discharging area, a first folding area, a Joule heating area, a second folding area, and a second feeding and discharging area arranged in sequence along the conveying direction; an upper conductive substrate and a lower conductive substrate that are parallel to each other and independently transported are arranged between the first feeding and discharging area and the second feeding and discharging area; the first feeding and discharging area and the second feeding and discharging area are used for the feeding or collection of samples; the first folding area and the second folding area are independently connected to the upper conductive substrate or the lower conductive substrate; the first folding area includes a forward folding device for folding the two sides of the upper conductive substrate or the lower conductive substrate inward to merge the upper conductive substrate and the lower conductive substrate; the second folding area includes a reverse folding device for unfolding the folded edge of the upper conductive substrate or the lower conductive substrate to separate the upper conductive substrate and the lower conductive substrate, and the forward folding device and the reverse folding device are arranged in opposite directions; the Joule heating area includes a first conductive device and a second conductive device that are in ohmic contact with the upper conductive substrate or the lower conductive substrate, and the first conductive device and the second conductive device are arranged at intervals along the conveying direction.

[0011] In the present invention, the upper conductive substrate and the lower conductive substrate are combined when passing through the forward flanging device, with inward folding on both sides, achieving the encapsulation of the sample, avoiding the splashing of the sample under the Joule heat impact, and making the sample heat more evenly. In the Joule heat heating zone formed by the first conductive device and the second conductive device, a circuit is formed among the upper conductive substrate, the lower conductive substrate, the first conductive device, and the second conductive device to generate Joule heat, achieving the purpose of heating the sample. Therefore, it is also applicable to insulating samples. After heating, the upper conductive substrate and the lower conductive substrate are separated by unfolding the flanges through the reverse flanging device, facilitating the collection of the prepared catalyst. The present invention utilizes the forward flanging device and the reverse flanging device arranged in reverse in the first flanging area and the second flanging area to achieve the two-way automatic combination and separation of the upper conductive substrate and the lower conductive substrate, and further realizes the automatic feeding and discharging in the continuous preparation process, ensuring the stable and large-scale production of the catalyst.

[0012] Preferably, the continuous catalyst preparation system is further provided with a first conveying device and a second conveying device. The first conveying device is used to convey the upper conductive substrate, and the second conveying device is used to convey the lower conductive substrate. The first conveying device includes a first unwinding part and a first winding part, and the first unwinding part and the first winding part are respectively arranged in the first feeding and discharging area and the second feeding and discharging area. The second conveying device includes a second unwinding part and a second winding part, and the second unwinding part and the second winding part are respectively arranged in the first feeding and discharging area and the second feeding and discharging area.

[0013] Preferably, the upper conductive substrate and the lower conductive substrate are each independently an endless ring-shaped conductive substrate.

[0014] Preferably, the first flanging area and the second flanging area are each independently provided with a shaping device. The shaping device is arranged on the side of the forward flanging device away from the first feeding and discharging area, or on the side of the reverse flanging device away from the second feeding and discharging area. The shaping device includes an upper roller and a lower roller arranged opposite to each other. The upper roller is arranged above the upper conductive substrate, and the lower roller is arranged below the lower conductive substrate. The axial directions of the upper roller and the lower roller are perpendicular to the conveying direction.

[0015] In the present invention, a shaping device is arranged in the first flanging area and the second flanging area to make the upper conductive substrate and the lower conductive substrate fit. The setting of the shaping device can further improve the degree of fit between the upper conductive substrate and the lower conductive substrate after the conductive substrates are flanged by the flanging unit, ensuring the close contact between the upper conductive substrate and the lower conductive substrate. After heating, the flatness of the conductive substrates can also be adjusted to ensure that the upper conductive substrate and the lower conductive substrate are separated by another flanging unit.

[0016] Preferably, a turning roller is independently provided between the first folding edge area and the Joule heat heating area, and between the Joule heat heating area and the second folding edge area.

[0017] In the present invention, the conveying directions of the upper conductive substrate and the lower conductive substrate are changed by using the turning roller. When passing through the Joule heat heating area, the shapes of the upper conductive substrate and the lower conductive substrate are adjusted into a "U" shape, so as to increase the contact area between the conductive substrate and the first conductive device and the second conductive device, and avoid excessive local instantaneous heat generation caused by too small contact area and too large ohmic impedance.

[0018] Preferably, a power supply device is further provided in the Joule heat heating area, and the power supply device is electrically connected to the first conductive device and the second conductive device respectively.

[0019] In the present invention, the first conductive device and the second conductive device are respectively electrically connected to the power supply device. By controlling the voltage or current of the power supply device, the current in the conductive path formed between the conductive substrate and the conductive unit is controlled, and thus the generated Joule heat and the heating temperature are controlled. The type of power supply used in the present invention is not particularly limited, and for example, it can be any one of a constant voltage power supply, a constant current power supply, a direct current power supply or an alternating current power supply.

[0020] Preferably, a temperature measuring device is further provided in the Joule heat heating area for detecting the temperature of the Joule heat heating area, and the temperature measuring range of the temperature measuring device is 0°C - 3000°C.

[0021] Preferably, the materials of the upper conductive substrate and the lower conductive substrate independently include carbon paper and / or carbon cloth.

[0022] Preferably, the first conductive device and the second conductive device independently include a conductive roller, and the material of the conductive roller includes metal and / or graphite.

[0023] In a second aspect, the present invention provides a method for continuously preparing a catalyst. The method for continuously preparing a catalyst uses the catalyst continuous preparation system described in the first aspect. The method for continuously preparing a catalyst includes:

[0024] The upper conductive substrate and the lower conductive substrate are conveyed from the first feeding and receiving area or the second feeding and receiving area to the second feeding and receiving area or the first feeding and receiving area. The sample is placed on the upper surface of the lower conductive substrate from the first feeding and receiving area or the second feeding and receiving area. When it reaches the first folding edge area or the second folding edge area, under the action of the forward folding edge device or the reverse folding edge device, the upper conductive substrate and the lower conductive substrate are combined, and the two sides are folded inward to wrap the sample between the upper conductive substrate and the lower conductive substrate. The upper conductive substrate and the lower conductive substrate wrapped with the sample are conveyed to the Joule heat heating area, and a circuit is formed between the first conductive device, the second conductive device, the upper conductive substrate and the lower conductive substrate to generate Joule heat and heat the sample. After the sample heating is completed, the upper conductive substrate and the lower conductive substrate wrapped with the sample are conveyed to the second folding edge area or the first folding edge area. Under the action of the reverse folding edge device or the forward folding edge device, the folded edges of the upper conductive substrate and the lower conductive substrate are unfolded, and the upper conductive substrate and the lower conductive substrate are separated. The prepared catalyst is collected by the second feeding and receiving area or the first feeding and receiving area.

[0025] Through the structural design of the first feeding and receiving area, the first folding edge area, the Joule heat heating area, the second folding edge area and the second feeding and receiving area, and with the reverse setting of the forward folding edge device and the reverse folding edge device in the first folding edge area and the second folding edge area, when using the catalyst continuous preparation system provided by the present invention to prepare the catalyst, whether the catalyst continuous preparation system runs from the first feeding and receiving area to the second feeding and receiving area or from the second feeding and receiving area to the first feeding and receiving area, the continuous preparation of the catalyst can be realized.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] (1) By designing the structure of the catalyst continuous preparation system, the present invention uses the upper conductive substrate and the lower conductive substrate to wrap the sample, avoiding the splashing of the sample under the Joule heat impact and making the sample heat more evenly; by using the folding edge devices arranged in the opposite direction along the conveying direction in the first folding edge area and the second folding edge area, the two-way automatic combination and separation of the upper conductive substrate and the lower conductive substrate are realized, and then the automatic feeding and receiving in the continuous preparation process are realized, ensuring the stable and large-scale production of the catalyst.

[0028] (2) The catalyst continuous preparation method provided by the present invention is simple. Only by changing the running direction of the catalyst continuous preparation system, the continuous production of the catalyst can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the folding edge device used in Embodiment 1 of the present invention.

[0030] Figure 2 is a schematic structural diagram of the folding edge device used in Embodiment 2 of the present invention.

[0031] Figure 3 It is a schematic cross-sectional view of the hemming device with a tunnel structure provided by the present invention.

[0032] Figure 4 It is a schematic structural view of the continuous catalyst preparation system provided in Embodiment 1.

[0033] Figure 5 It is a schematic structural view of the continuous catalyst preparation system provided in Embodiment 2.

[0034] Figure 6 It is a schematic structural view of the continuous catalyst preparation system provided in Embodiment 3.

[0035] Among them, 10 - the first feeding and receiving area; 20 - the first hemming area; 21 - the hemming device arranged forward; 22 - the shaping device; 221 - the upper roller; 222 - the lower roller; 30 - the Joule heat heating area; 31 - the first conductive device; 32 - the second conductive device; 33 - the DC power supply; 40 - the second hemming area; 41 - the hemming device arranged reversely; 42 - the shaping device; 421 - the upper roller; 422 - the lower roller; 50 - the second feeding and receiving area; 61 - the upper conductive substrate; 62 - the lower conductive substrate; 71 - the first unwinding part; 72 - the first winding part; 81 - the second unwinding part; 82 - the second winding part; 83 - the supporting roller; 90 - the turning roller; 101 - the upper roller; 102 - the lower roller. Detailed Embodiments

[0036] The technical solution of the present invention will be further described below through specific embodiments. Those skilled in the art should understand that the embodiments are only for helping to understand the present invention and should not be regarded as specific limitations on the present invention.

[0037] In a specific embodiment, the present invention provides a continuous catalyst preparation system. The continuous catalyst preparation system includes a first feeding and discharging area, a first folding area, a Joule heat heating area, a second folding area, and a second feeding and discharging area arranged in sequence along the conveying direction; an upper conductive substrate and a lower conductive substrate which are parallel to each other and independently transported are arranged between the first feeding and discharging area and the second feeding and discharging area; the first feeding and discharging area and the second feeding and discharging area are used for sample feeding or collection; the first folding area and the second folding area are independently butted to the upper conductive substrate or the lower conductive substrate; the first folding area includes a forward folding device for folding the two sides of the upper conductive substrate or the lower conductive substrate inward to combine the upper conductive substrate and the lower conductive substrate; the second folding area includes a reverse folding device for unfolding the folded edge of the upper conductive substrate or the lower conductive substrate to separate the upper conductive substrate and the lower conductive substrate, and the forward folding device and the reverse folding device are arranged in opposite directions; the Joule heat heating area includes a first conductive device and a second conductive device which are in Ohmic contact with the upper conductive substrate or the lower conductive substrate, and the first conductive device and the second conductive device are arranged at intervals along the conveying direction.

[0038] In the present invention, when passing through the forward folding device, the upper conductive substrate and the lower conductive substrate are combined, and the two sides are folded inward to achieve the encapsulation of the sample, avoiding the splashing of the sample under the Joule heat impact and making the sample heat more evenly; in the Joule heat heating area formed by the first conductive device and the second conductive device, a circuit is formed among the upper conductive substrate, the lower conductive substrate, the first conductive device and the second conductive device to generate Joule heat, achieving the purpose of heating the sample, so it is also applicable to insulating samples; after heating, the folded edge is unfolded through the reverse folding device of the upper conductive substrate and the lower conductive substrate, and the upper conductive substrate and the lower conductive substrate are separated, facilitating the collection of the prepared catalyst; by using the forward folding device and the reverse folding device arranged in opposite directions in the first folding area and the second folding area, the present invention realizes the two-way automatic combination and separation of the upper conductive substrate and the lower conductive substrate, and further realizes the automatic feeding and discharging in the continuous preparation process, ensuring the stable and large-scale production of the catalyst.

[0039] In some embodiments, the folding device has the following structure: when arranged forward, it can restrain the combination of the upper conductive substrate and the lower conductive substrate, and the two sides are folded inward, while when arranged in reverse, the upper conductive substrate and the lower conductive substrate are unfolded and separated from each other. The present invention does not particularly limit the structure or material of the folding device, as long as the purpose of the present invention can be achieved. The material of the folding device can be, for example, metal and / or plastic.

[0040] For example, in some embodiments, the folding device can be Figure 1 and Figure 2The sheet-like structure shown, along the length direction, has both sides folded inward in a spiral or quasi-spiral shape, with the spiral radius gradually decreasing, and being flat at the minimum spiral radius. When set in the forward direction, the upper conductive substrate and the lower conductive substrate enter the hemming device from the side with a larger spiral radius. Under the constraint of the hemming device, the upper conductive substrate and the lower conductive substrate are combined, and both sides are folded inward in a spiral manner, passing through the flat outlet at the minimum spiral radius to complete the hemming; when set in the reverse direction, the combined upper conductive substrate and lower conductive substrate enter the hemming device from the side with the smallest spiral radius. As the spiral radius increases, the hemming unfolds, and the upper conductive substrate and the lower conductive substrate are separated.

[0041] In some embodiments, the hemming device has a tunnel structure running through along the conveying direction, as Figure 3 shown. The tunnel structure corresponds to the path where the upper conductive substrate and the lower conductive substrate are combined along the conveying direction and both sides are folded. When the hemming device is set in the forward direction, with the direction parallel to the surface of the side with the largest specific surface area of the hemming device as the horizontal direction, along the conveying direction of the upper conductive substrate and the lower conductive substrate, the width of the tunnel structure gradually decreases in the horizontal direction, constraining both sides of the upper conductive substrate and the lower conductive substrate to fold inward, and at the same time, the height in the vertical direction decreases to complete the hemming; when the hemming device is set in the reverse direction, the combined upper conductive substrate and lower conductive substrate enter the tunnel structure from the side with a smaller width in the horizontal direction. Under the constraint of the tunnel structure, the hemming unfolds, realizing the separation of the upper conductive substrate and the lower conductive substrate.

[0042] The present invention utilizes the hemming devices arranged in the reverse direction in the first hemming area and the second hemming area to realize the two-way automatic combination and separation of the upper conductive substrate and the lower conductive substrate, and further realizes the automatic feeding and discharging in the continuous preparation process, ensuring the stable large-scale production of the catalyst.

[0043] In some embodiments, the upper conductive substrate and the lower conductive substrate are each independently an endless ring-shaped conductive substrate.

[0044] When the upper conductive substrate or the lower conductive substrate is an endless ring-shaped conductive substrate, the upper conductive substrate or the lower conductive substrate circulates back and forth along the conveying direction, and the continuous production of the catalyst can be realized without reversing the conveying direction.

[0045] In some embodiments, when the upper conductive substrate or the lower conductive substrate is an endless ring-shaped conductive substrate, according to the structural stability requirements of the preparation system, support rollers can be adaptively added in the first conveying device or the second conveying device. The setting of the support rollers is a conventional technical means in the art, and the present invention will not make special limitations.

[0046] In some embodiments, according to the actual production requirements, multiple Joule heating zones can be set. By controlling the current in different Joule heating zones, the interval between the first conductive device and the second conductive device in different Joule heating zones, and regulating the conveying speed, the temperature and time of the sample when passing through different Joule heating zones can be controlled to meet the heat treatment process requirements of different temperatures and times in multiple stages.

[0047] In some embodiments, the sample includes a solid sample and / or a liquid sample.

[0048] In some embodiments, the continuous preparation system of the catalyst is further provided with a first conveying device and a second conveying device. The first conveying device is used to convey the upper conductive substrate, and the second conveying device is used to convey the lower conductive substrate. The first conveying device includes a first unwinding part and a first winding part, and the first unwinding part and the first winding part are respectively arranged in the first feeding and discharging area and the second feeding and discharging area; the second conveying device includes a second unwinding part and a second winding part, and the second unwinding part and the second winding part are respectively arranged in the first feeding and discharging area and the second feeding and discharging area.

[0049] In some embodiments, the first unwinding part, the second unwinding part, the first winding part, and the second winding part each independently include a motor-driven conveying roller.

[0050] In the present invention, by changing the driving direction and driving speed of the motor, the rotation direction and rotation speed of the conveying roller are changed, and thus the conveying direction and conveying speed of the upper conductive substrate and the lower conductive substrate can be controlled. By controlling the conveying speed of the upper conductive substrate and the lower conductive substrate, the time for the sample to pass through the conductive unit can be controlled, and thus the heating time of the sample can be controlled.

[0051] In some embodiments, the time interval for the upper conductive substrate and the lower conductive substrate to pass through the first conductive device and the second conductive device in sequence is 0.1 s - 300 s. For example, it can be 0.1 s, 0.5 s, 1.0 s, 2.0 s, 5.0 s, 10.0 s, 20.0 s, 50.0 s, 100.0 s, 150.0 s, 200.0 s, 250.0 s, or 300.0 s, including but not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0052] In some embodiments, the first folding edge area and the second folding edge area are each independently provided with a shaping device, and the shaping device is arranged on the side of the forward folding edge device away from the first feeding and discharging area, or on the side of the reverse folding edge device away from the second feeding and discharging area.

[0053] In some embodiments, shaping devices are arranged in the first folding edge area and the second folding edge area to make the upper conductive substrate and the lower conductive substrate fit together.

[0054] In some embodiments, the shaping device includes an upper roller and a lower roller which are oppositely arranged. The upper roller is disposed above the upper conductive substrate, and the lower roller is disposed below the lower conductive substrate. The axial directions of the upper roller and the lower roller are perpendicular to the conveying direction.

[0055] In some embodiments, the provision of the shaping device can further improve the degree of fitting between the upper conductive substrate and the lower conductive substrate after the conductive substrate is hemmed by the hemming unit, ensuring close contact between the upper conductive substrate and the lower conductive substrate. After the heating is completed, the flatness of the conductive substrate can also be adjusted to ensure the separation of the upper conductive substrate and the lower conductive substrate by another hemming unit.

[0056] In some embodiments, each of the upper roller and the lower roller independently includes at least one roller barrel, and the number of roller barrels can be determined according to actual production needs. For example, the number of roller barrels of the upper roller or the lower roller can be 1, 2, 3, 4, or 5.

[0057] In some embodiments, turning rollers are independently provided between the first hemming area and the Joule heat heating area, and between the Joule heat heating area and the second hemming area.

[0058] In the present invention, the turning roller is used to change the conveying direction of the upper conductive substrate and the lower conductive substrate. When passing through the Joule heat heating area, the shapes of the upper conductive substrate and the lower conductive substrate are adjusted to a "U" shape, increasing the contact area between the conductive substrate and the first conductive device and the second conductive device, and avoiding excessive instantaneous heat generation caused by too small contact area and too large ohmic impedance.

[0059] When there are multiple Joule heat heating areas in the catalyst continuous preparation system, turning rollers can also be provided between different Joule heat heating areas to change the running directions of the upper conductive substrate and the lower conductive substrate and adjust the contact area between the upper conductive substrate and the lower conductive substrate and the first conductive device and the second conductive device; shaping devices can also be provided between different Joule heat heating areas to adjust the deformation of the upper and lower conductive substrates caused by the reaction of the sample and maintain good contact between the upper conductive substrate and the lower conductive substrate.

[0060] In some embodiments, a power supply device is further provided in the Joule heat heating area, and the power supply device is electrically connected to the first conductive device and the second conductive device respectively.

[0061] In the present invention, the first conductive device and the second conductive device are respectively electrically connected to the power supply device. By controlling the voltage or current of the power supply device, the current in the conductive path formed between the conductive substrate and the conductive unit is controlled, and thus the generated Joule heat is controlled to control the heating temperature. The type of power supply used in the present invention is not particularly limited. For example, it can be any one of a constant voltage power supply, a constant current power supply, a direct current power supply or an alternating current power supply.

[0062] In some embodiments, a temperature measuring device is further provided in the Joule heat heating zone for detecting the temperature of the Joule heat heating zone. The temperature measuring range of the temperature measuring device is 0°C - 3000°C. For example, it can be 0°C, 25°C, 50°C, 100°C, 200°C, 300°C, 500°C, 1000°C, 1500°C, 2000°C, 2500°C or 3000°C, including but not limited to the listed values, and other unlisted values within the numerical range are equally applicable.

[0063] In the present invention, the specific structure of the temperature measuring device is not particularly limited as long as it can meet the temperature measuring requirements of the present invention. For example, the temperature measuring device can be an infrared temperature measuring device.

[0064] In some embodiments, the materials of the upper conductive substrate and the lower conductive substrate independently include carbon paper and / or carbon cloth.

[0065] In some embodiments, the first conductive device and the second conductive device independently include a conductive roller, and the material of the conductive roller includes metal and / or graphite.

[0066] In some embodiments, the present invention further provides a continuous preparation method for a catalyst. The continuous preparation method for the catalyst uses the catalyst continuous preparation system described in the first aspect. The continuous preparation method for the catalyst includes:

[0067] The upper conductive substrate and the lower conductive substrate are conveyed from the first feeding and discharging area or the second feeding and discharging area to the second feeding and discharging area or the first feeding and discharging area. The sample is placed on the upper surface of the lower conductive substrate from the first feeding and discharging area or the second feeding and discharging area. When it reaches the first folding edge area or the second folding edge area, under the action of the forward folding edge device or the reverse folding edge device, the upper conductive substrate and the lower conductive substrate are combined, and both sides are folded inwards to wrap the sample between the upper conductive substrate and the lower conductive substrate. The upper conductive substrate and the lower conductive substrate wrapped with the sample are conveyed to the Joule heat heating area, and a path is formed among the first conductive device, the second conductive device, the upper conductive substrate and the lower conductive substrate to generate Joule heat and heat the sample. After the sample heating is completed, the upper conductive substrate and the lower conductive substrate wrapped with the sample are conveyed to the second folding edge area or the first folding edge area. Under the action of the reverse folding edge device or the forward folding edge device, the folded edges of the upper conductive substrate and the lower conductive substrate are unfolded, and the upper conductive substrate and the lower conductive substrate are separated. The prepared catalyst is collected from the second feeding and discharging area or the first feeding and discharging area.

[0068] Through the structural design of the first feeding and discharging area, the first folding edge area, the Joule heat heating area, the second folding edge area and the second feeding and discharging area, and with the reverse setting of the forward folding edge device and the reverse folding edge device in the first folding edge area and the second folding edge area, when the catalyst continuous preparation system provided by the present invention is used to prepare the catalyst, whether the catalyst continuous preparation system runs from the first feeding and discharging area to the second feeding and discharging area or from the second feeding and discharging area to the first feeding and discharging area, the continuous preparation of the catalyst can be realized.

[0069] As a preferred technical solution in another specific embodiment of the present invention, taking the operation from the first feeding and discharging area to the second feeding and discharging area first as an example, the catalyst continuous preparation method provided by the present invention may be: the upper conductive substrate and the lower conductive substrate are conveyed from the first feeding and discharging area to the second feeding and discharging area, the sample is placed on the upper surface of the lower conductive substrate from the first feeding and discharging area. When it reaches the first folding edge area, under the action of the forward folding edge device, the upper conductive substrate and the lower conductive substrate are combined, and both sides are folded inwards to wrap the sample between the upper conductive substrate and the lower conductive substrate. The upper conductive substrate and the lower conductive substrate wrapped with the sample are conveyed to the Joule heat heating area, and a path is formed among the first conductive device, the second conductive device, the upper conductive substrate and the lower conductive substrate to generate Joule heat and heat the sample. After the sample heating is completed, the upper conductive substrate and the lower conductive substrate wrapped with the sample are conveyed to the second folding edge area. Under the action of the reverse folding edge device, the folded edges on both sides of the upper conductive substrate and the lower conductive substrate are unfolded, and the upper conductive substrate and the lower conductive substrate are separated. The prepared catalyst is collected from the second feeding and discharging area.

[0070] When the upper conductive substrate and the lower conductive substrate are all conveyed from the first feeding and receiving area to the second feeding and receiving area, the conveying directions of the upper conductive substrate and the lower conductive substrate are changed, and they run from the second feeding and receiving area to the first feeding and receiving area. The sample is placed on the upper surface of the lower conductive substrate from the second feeding and receiving area, conveyed to the second folding edge area, and under the action of the reverse folding edge device, the upper conductive substrate and the lower conductive substrate are combined, and the two sides are folded inwards to wrap the sample between the upper conductive substrate and the lower conductive substrate, and then conveyed to the Joule heat heating area to heat the sample. After the sample heating is completed, it is conveyed to the first folding edge area, and under the action of the forward folding edge device, the folded edges on both sides of the upper conductive substrate and the lower conductive substrate are unfolded, and the upper conductive substrate is separated from the lower conductive substrate, and the prepared catalyst is collected by the first feeding and receiving area.

[0071] Example 1

[0072] This embodiment provides a continuous preparation system for a catalyst, as Figure 4 shown, the continuous preparation system for the catalyst includes a first feeding and receiving area 10, a first folding edge area 20, a Joule heat heating area 30, a second folding edge area 40 and a second feeding and receiving area 50 arranged in sequence;

[0073] There are an upper conductive substrate 61 and a lower conductive substrate 62 which are parallel to each other and independently transported between the first feeding and receiving area 10 and the second feeding and receiving area 50; both the upper conductive substrate and the lower conductive substrate are carbon cloth; the upper conductive substrate 61 is conveyed by a first unwinding part 71 and a first winding part 72, and the lower conductive substrate 62 is conveyed by a second unwinding part 81 and a second winding part 82.

[0074] The first feeding and receiving area 10 and the second feeding and receiving area 50 are used for placing or collecting samples;

[0075] The first folding edge area 20 and the second folding edge area 40 are independently butted to the upper conductive substrate 61 or the lower conductive substrate 62; the first folding edge area 20 includes a folding edge device 21 and a shaping device 22 arranged in the forward direction. The structural schematic diagram of the folding edge device is as Figure 1 shown. The shaping device 22 includes an upper roller 221 and a lower roller 222. The forwardly arranged folding edge device 21 is used to combine the separated upper conductive substrate 61 and lower conductive substrate 62, and fold the two sides of the upper conductive substrate 61 and the lower conductive substrate 62 inwards; the second folding edge area 40 includes a folding edge device 41 and a shaping device 42 arranged in the reverse direction. The shaping device 42 includes an upper roller 421 and a lower roller 422. The reversely arranged folding edge device 41 is used to unfold the folded edges of the combined upper conductive substrate 61 and lower conductive substrate 62, and separate the upper conductive substrate 61 and the lower conductive substrate 62;

[0076] The Joule heat heating zone 30 includes a first conductive device 31, a second conductive device 32 and a DC power supply 33 that have ohmic contact with the upper conductive substrate 61 or the lower conductive substrate 62. The first conductive device 31 and the second conductive device 32 are arranged at intervals along the conveying direction, and both the first conductive device 31 and the second conductive device 32 are graphite conductive rollers.

[0077] A turning roller 90 is also provided between the first folding edge zone 20 and the Joule heat heating zone 30, and between the Joule heat heating zone 30 and the second folding edge zone 40.

[0078] This embodiment also provides a continuous catalyst preparation method. The continuous catalyst preparation method uses the continuous catalyst preparation system of this embodiment. The continuous catalyst preparation method includes:

[0079] The upper conductive substrate 61 and the lower conductive substrate 62 are conveyed from the first feeding and receiving zone 10 to the second feeding and receiving zone 50. The sample is placed on the upper surface of the lower conductive substrate 62 from the first feeding and receiving zone 10. When reaching the first folding edge zone 20, under the action of the forwardly arranged folding edge device 21, the upper conductive substrate 61 and the lower conductive substrate 62 are combined, folded inwardly on both sides, and under the action of the shaping device 22, the upper conductive substrate 61 and the lower conductive substrate 62 are further attached, and the sample is wrapped between the upper conductive substrate 61 and the lower conductive substrate 62;

[0080] The upper conductive substrate 61 and the lower conductive substrate 62 wrapped with the sample pass through the turning roller 90, form a "U" - shaped structure and pass through the Joule heat heating zone 30. A current is applied by the DC power supply 33 to form a path between the first conductive device 31, the second conductive device 32, the upper conductive substrate 61 and the lower conductive substrate 62, generating Joule heat to heat the sample;

[0081] After the sample heating is completed, the upper conductive substrate 61 and the lower conductive substrate 62 wrapped with the sample are conveyed to the second folding edge zone 40. After being adjusted by the shaping device 42, under the action of the reversely arranged folding edge device 41, the folded edges of the combined upper conductive substrate 61 and lower conductive substrate 62 are unfolded, the upper conductive substrate 61 and the lower conductive substrate 62 are separated, and the prepared catalyst is collected by the second feeding and receiving zone 50;

[0082] When the upper conductive substrate 61 and the lower conductive substrate 62 are all conveyed from the first feeding and receiving area 10 to the second feeding and receiving area 50, the conveying directions of the upper conductive substrate 61 and the lower conductive substrate 62 are changed, and they are conveyed in the reverse direction from the second feeding and receiving area 50 to the first feeding and receiving area 10. The sample is placed on the upper surface of the lower conductive substrate 62 from the second feeding and receiving area 50, and is conveyed to the second folding edge area 40. Under the action of the folding edge device 41 arranged in the reverse direction, the upper conductive substrate 61 and the lower conductive substrate 62 are combined, and the two sides are folded inwards to wrap the sample between the upper conductive substrate 61 and the lower conductive substrate 62, and then conveyed to the Joule heat heating area 30 to heat the sample. After the sample heating is completed, it is conveyed to the first folding edge area 20. Under the action of the folding edge device 21 arranged in the forward direction, the folded edges of the combined upper conductive substrate 61 and lower conductive substrate 62 are unfolded, and the upper conductive substrate 61 is separated from the lower conductive substrate 62, and the prepared catalyst is collected by the first feeding and receiving area 10.

[0083] Example 2

[0084] This embodiment provides a continuous catalyst preparation system, as Figure 5 shown. The difference between this embodiment and Embodiment 1 is that in this embodiment, the upper conductive substrate 61 and the lower conductive substrate 62 adopt endless loop-shaped carbon cloth conductive substrates. To improve the stability of the continuous catalyst preparation system, in the second conveying device, a support roller 83 is additionally arranged in each of the first feeding and receiving area 10 and the second feeding and receiving area 50. The structural schematic diagram of the folding edge device used in this embodiment is as Figure 2 shown.

[0085] This embodiment also provides a continuous catalyst preparation method. The continuous catalyst preparation method adopts the continuous catalyst preparation system of this embodiment. In this embodiment, the upper conductive substrate 61 and the lower conductive substrate 62 are endless loop-shaped carbon cloth conductive substrates, and are circulated and conveyed under the action of the first unwinding part 71, the first winding part 72, the second unwinding part 81, the second winding part 82 and the two support rollers 83 respectively. The difference from the preparation method provided in Embodiment 1 is that the continuous production of the catalyst can be realized without changing the conveying direction.

[0086] Example 3

[0087] This embodiment provides a continuous catalyst preparation system, as Figure 6 shown. The difference between this embodiment and Embodiment 1 is that it has two Joule heat heating areas 30, and a turning roller 90 is additionally arranged between the two Joule heat heating areas 30, so that when the upper conductive substrate 61 and the lower conductive substrate 62 pass through the two Joule heat heating areas, they are both in a "U-shaped" structure, and a shaping device composed of an upper roller 101 and a lower roller 102 is arranged between the two Joule heat heating areas 30 to maintain good contact between the upper conductive substrate 61 and the lower conductive substrate 62 and the sample.

[0088] This embodiment also provides a method for continuously preparing a catalyst. The method for continuously preparing the catalyst uses the catalyst continuous preparation system of this embodiment. The specific preparation method is the same as that of Embodiment 1 except that the sample passes through two Joule heat heating zones.

[0089] The applicant declares that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by any person skilled in the art within the technical scope disclosed by the present invention fall within the protection scope and the disclosure scope of the present invention.

Claims

1. A continuous catalyst preparation system, characterized in that: The catalyst continuous preparation system comprises a first material feeding and receiving area, a first folding area, a Joule heat heating area, a second folding area and a second material feeding and receiving area which are arranged in sequence along the conveying direction; An upper conductive substrate and a lower conductive substrate which are parallel to each other and transported independently are arranged between the first feeding and receiving area and the second feeding and receiving area; The first material feeding and receiving area and the second material feeding and receiving area are used for feeding or collecting samples; the samples include solid samples and / or liquid samples; The first folding area and the second folding area are independently connected to the upper conductive substrate or the lower conductive substrate; the first folding area includes a forward folding device for folding the two sides of the upper conductive substrate or the lower conductive substrate inwardly to merge the upper conductive substrate and the lower conductive substrate; the second folding area includes a reverse folding device for unfolding the folded edge of the upper conductive substrate or the lower conductive substrate to separate the upper conductive substrate and the lower conductive substrate, and the forward folding device and the reverse folding device are arranged in opposite directions; The Joule heat heating zone comprises a first conductive device and a second conductive device in ohmic contact with the upper conductive substrate or the lower conductive substrate, wherein the first conductive device and the second conductive device are arranged at intervals along the conveying direction; Steering rollers are independently arranged between the first folding area and the Joule heat heating area, and between the Joule heat heating area and the second folding area. When passing through the Joule heat heating area, the shapes of the upper conductive substrate and the lower conductive substrate are adjusted to a "U shape".

2. The continuous catalyst preparation system according to claim 1, characterized in that: The catalyst continuous preparation system is also provided with a first conveying device and a second conveying device, the first conveying device is used to convey the upper conductive substrate, and the second conveying device is used to convey the lower conductive substrate, the first conveying device includes a first unwinding part and a first winding part, and the first unwinding part and the first winding part are respectively arranged in the first feeding and receiving area and the second feeding and receiving area; the second conveying device includes a second unwinding part and a second winding part, and the second unwinding part and the second winding part are respectively arranged in the first feeding and receiving area and the second feeding and receiving area.

3. The continuous catalyst preparation system according to claim 1, characterized in that: The upper conductive substrate and the lower conductive substrate are each independently an endless ring-shaped conductive substrate.

4. The continuous catalyst preparation system according to claim 1, characterized in that: The first folding area and the second folding area are also each independently provided with a shaping device, and the shaping device is arranged on the side of the forward folding device away from the first feeding and receiving area, or is arranged on the side of the reverse folding device away from the second feeding and receiving area; the shaping device includes an upper roller and a lower roller arranged opposite to each other, the upper roller is arranged above the upper conductive substrate, and the lower roller is arranged below the lower conductive substrate, and the axial directions of the upper roller and the lower roller are perpendicular to the conveying direction.

5. The continuous catalyst preparation system according to claim 1, characterized in that: The Joule heat heating zone is also provided with a power supply device, and the power supply device is electrically connected to the first conductive device and the second conductive device respectively.

6. The continuous catalyst preparation system according to claim 1, characterized in that: The Joule heat heating zone is also provided with a temperature measuring device for detecting the temperature of the Joule heat heating zone, and the temperature measuring range of the temperature measuring device is 0°C-3000°C.

7. The continuous catalyst preparation system according to claim 1, characterized in that: The materials of the upper conductive substrate and the lower conductive substrate independently include carbon paper and / or carbon cloth.

8. The continuous catalyst preparation system according to claim 1, characterized in that: The first conductive device and the second conductive device each independently include a conductive roller, and the conductive roller is made of metal and / or graphite.

9. A method for continuous preparation of a catalyst, characterized in that: The catalyst continuous preparation method adopts the catalyst continuous preparation system according to any one of claims 1 to 8, and the catalyst continuous preparation method comprises: The upper conductive substrate and the lower conductive substrate are transported from the first feeding and receiving area or the second feeding and receiving area to the second feeding and receiving area or the first feeding and receiving area, and the sample is placed from the first feeding and receiving area or the second feeding and receiving area to the upper surface of the lower conductive substrate. When the sample reaches the first folding area or the second folding area, the upper conductive substrate is combined with the lower conductive substrate under the action of the forward folding device or the reverse folding device, and the two sides are folded inward, so that the sample is covered between the upper conductive substrate and the lower conductive substrate; The upper conductive substrate and the lower conductive substrate coated with the sample are transported to the Joule heat heating zone, and a passage is formed between the first conductive device, the second conductive device, the upper conductive substrate and the lower conductive substrate to generate Joule heat to heat the sample; After the sample heating is completed, the upper conductive substrate and the lower conductive substrate coated with the sample are transported to the second folding area or the first folding area. Under the action of the reverse folding device or the forward folding device, the folds of the upper conductive substrate and the lower conductive substrate are unfolded, and the upper conductive substrate and the lower conductive substrate are separated, and the prepared catalyst is collected by the second feed and receiving area or the first feed and receiving area.

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