Continuous catalyst preparation system and method

Abstract

The invention provides a catalyst continuous preparation system and method. The catalyst continuous preparation system comprises a first feeding and receiving area, a first edge folding area, a Joule heating area, a second edge folding area and a second feeding and receiving area which are sequentially arranged in the conveying direction. An upper conductive substrate and a lower conductive substrate which are parallel to each other and are independently transported are arranged between the first feeding and receiving area and the second feeding and receiving area. The structure of the continuous catalyst preparation system is designed, so that a sample is prevented from splashing under Joule thermal shock, automatic feeding and receiving in the continuous preparation process are realized, and stable and large-scale production of the catalyst is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of chemical engineering, in particular to a catalyst preparation system, and in particular to a catalyst continuous preparation system and method. Background Art

[0002] Joule heating, as an emerging ultrafast synthesis technology, can reach extremely high temperatures in 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 advances have been made in the application of Joule heating technology in catalyst synthesis. This includes defect modulation, heterogeneous structure construction, single atom catalysts, bimetallic alloy catalysts, high entropy alloy (HEA) catalysts and the synthesis of metastable catalysts.

[0003] CN118792692A discloses a rapid preparation method and application of a calcium ion modified NiSe2 / FeSe2 bicrystalline phase catalyst, wherein the preparation method includes introducing calcium ions in the complex reaction process of potassium hexacyanoferrate and nickel nitrate, and then preparing calcium ion modified NiSe2 / FeSe2 bicrystalline phase catalyst by means of Joule heat treatment technology. The Joule heat treatment technology disclosed in the patent needs to place the sample in the groove of the graphite sample stage of the Joule heating device, and the sample stage is heated by the Joule heat effect, so as to achieve the purpose of heating the sample. After heating on the sample stage is completed each time, the sample stage needs to be taken out, and a new sample needs to be reloaded after cleaning. However, the single sample dosage of the equipment disclosed in the patent is very limited, which is only applicable to the occasions of small batch production, and the reaction conditions of different batches are difficult to keep exactly the same, which causes the catalyst performance produced in different batches to be difficult to keep consistent.

[0004] CN117049519A discloses a continuous preparation method and equipment for few-walled carbon nanotubes, which utilizes the transient current formed after the powder with conductive properties contacts the electrode to generate transient high temperature to achieve the purpose of heating. Therefore, the equipment disclosed in this patent can only heat the powder with conductive properties, but cannot heat the insulating powder or liquid. In addition, the electrode is in direct contact with the sample, which is very likely to cause sample contamination, and under the impact of transient high temperature, it is very likely to cause sample splashing, affecting the sample yield and heating effect.

[0005] CN117403269A discloses a method and device for preparing a large amount of catalyst. The invention utilizes the Joule heat effect generated when current passes through a resistor component, selects a carbonaceous substrate commonly used in electrocatalytic applications, and realizes the large-scale preparation of the catalyst. However, when the device disclosed in the patent is used, the metal precursor ions need to be loaded on the carbonaceous substrate, and only a catalyst integrated with the carbonaceous substrate can be obtained. It is difficult to separate the catalyst from the carbonaceous substrate, which limits the application of the catalyst.

[0006] Although Joule heat technology shows great potential in catalyst synthesis, its equipment design still has much room for improvement in terms of controllability, continuity, speed, stability, and wide applicability.

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

[0008] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a catalyst continuous preparation system and method. The present invention designs the structure of the catalyst continuous preparation system, and uses the upper conductive substrate and the lower conductive substrate to cover the sample, thereby avoiding the splashing of the sample under Joule heat shock and making the sample heated more evenly; using the folding devices arranged in the first folding area and the second folding area in opposite directions along the conveying direction, the upper conductive substrate and the lower conductive substrate are automatically merged and separated in both directions, thereby realizing automatic feeding and collecting in the continuous preparation process, and ensuring the stable and large-scale production of the catalyst.

[0009] In order to achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0010] In the first aspect, the present invention provides a catalyst continuous preparation system, which includes a first feeding and receiving zone, a first folding zone, a Joule heat heating zone, a second folding zone and a second feeding and receiving zone arranged in sequence along the conveying direction; an upper conductive substrate and a lower conductive substrate that are parallel to each other and transported independently are arranged between the first feeding and receiving zone and the second feeding and receiving zone; the first feeding and receiving zone and the second feeding and receiving zone are used for placing or collecting samples; the first folding zone and the second folding zone are independently connected to the upper conductive substrate or the lower conductive substrate; the first folding zone 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 zone includes a reverse folding device for unfolding the fold 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 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 merged when passing through the forward folding device, and the two sides are folded inward to achieve the coating of the sample, avoid the splashing of the sample under the Joule heat shock, and make the sample heated more evenly; in the Joule heat heating zone formed by the first conductive device and the second conductive device, the upper conductive substrate, the lower conductive substrate and the first conductive device and the second conductive device form a passage to generate Joule heat to achieve the purpose of heating the sample, so it is also applicable to insulating samples; after the heating is completed, the upper conductive substrate and the lower conductive substrate are unfolded by the reverse folding device, and the upper conductive substrate and the lower conductive substrate are separated, which is convenient for the collection of the prepared catalyst; the present invention utilizes the forward folding device and the reverse folding device arranged in the first folding zone and the second folding zone in reverse order to achieve the two-way automatic merging and separation of the upper conductive substrate and the lower conductive substrate, and then the automatic feeding and receiving in the continuous preparation process, ensuring the stable and large-scale production of the catalyst.

[0012] Preferably, 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 portion and a first winding portion, and the first unwinding portion and the first winding portion 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 portion and a second winding portion, and the second unwinding portion and the second winding portion are respectively arranged in the first feeding and receiving area and the second feeding and receiving 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 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.

[0015] In the present invention, shaping devices are provided in the first folding area and the second folding area to make the upper conductive substrate and the lower conductive substrate fit together. The setting of the shaping device can further improve the fit between the upper conductive substrate and the lower conductive substrate after the conductive substrate is folded by the folding unit, ensure the close contact between the upper conductive substrate and the lower conductive substrate, and after the heating is completed, the flatness of the conductive substrate can also be adjusted to ensure that the upper conductive substrate and the lower conductive substrate are separated by another folding unit.

[0016] Preferably, turning rollers are independently arranged between the first folding zone and the Joule heat heating zone, and between the Joule heat heating zone and the second folding zone.

[0017] In the present invention, steering rollers are used to change the conveying directions of the upper conductive substrate and the lower conductive substrate. When passing through the Joule heat heating zone, the shapes of the upper conductive substrate and the lower conductive substrate are adjusted to a "U-shape" to increase the contact area between the conductive substrate and the first conductive device and the second conductive device, thereby avoiding excessive local instantaneous heat generation due to too small a contact area and too large an ohmic impedance.

[0018] Preferably, the Joule heat heating zone is further 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.

[0019] In the present invention, the first conductive device and the second conductive device are electrically connected to the power supply device, respectively, and the voltage or current of the power supply device is controlled to control the current in the conductive path formed between the conductive substrate and the conductive unit, thereby controlling the generated Joule heat and 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 DC power supply or an AC power supply.

[0020] Preferably, the Joule heat heating zone is further 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.

[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 each independently include a conductive roller, and the conductive roller is made of metal and / or graphite.

[0023] In a second aspect, the present invention provides a method for continuous preparation of a catalyst, wherein the method for continuous preparation of a catalyst adopts the continuous preparation system for a catalyst according to the first aspect, and the method for continuous preparation of a catalyst comprises:

[0024] The upper conductive substrate and the lower conductive substrate are transported from the first feeding and collecting area or the second feeding and collecting area to the second feeding and collecting area or the first feeding and collecting area, and the sample is placed from the first feeding and collecting area or the second feeding and collecting area to the upper surface of the lower conductive substrate. When reaching the first folding area or the second folding area, under the action of the forward folding device or the reverse folding device, the upper conductive substrate and the lower conductive substrate are merged, and the two sides are folded inward, so that the sample is coated 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 area, and a passage is formed between the first conductive device, the second conductive device, the upper conductive substrate and the lower conductive substrate, Joule heat is generated, and the sample is heated; 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, and 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 feeding and collecting area or the first feeding and collecting area.

[0025] The present invention adopts the structural design of the first feeding and collecting zone, the first folding zone, the Joule heat heating zone, the second folding zone and the second feeding and collecting zone, and the reverse arrangement of the forward folding device and the reverse folding device in the first folding zone and the second folding zone. When the catalyst is prepared using the catalyst continuous preparation system provided by the present invention, the continuous preparation of the catalyst can be achieved regardless of whether the catalyst continuous preparation system runs from the first feeding and collecting zone to the second feeding and collecting zone or from the second feeding and collecting zone to the first feeding and collecting zone.

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

[0027] (1) The present invention designs the structure of the continuous catalyst preparation system and uses an upper conductive substrate and a lower conductive substrate to cover the sample, thereby avoiding splashing of the sample under Joule heat shock and allowing the sample to be heated more evenly; by using folding devices arranged in opposite directions along the conveying direction in the first folding area and the second folding area, the upper conductive substrate and the lower conductive substrate can be automatically merged and separated in both directions, thereby realizing automatic feeding and collecting in the continuous preparation process, and ensuring stable and large-scale production of the catalyst.

[0028] (2) The method for continuous catalyst preparation provided by the present invention is simple and can realize continuous production of catalyst by only changing the running direction of the continuous catalyst preparation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the folding device used in Example 1 of the present invention.

[0030] Figure 2 It is a schematic diagram of the structure of the folding device used in Example 2 of the present invention.

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

[0032] Figure 4 It is a schematic diagram of the structure of the continuous catalyst preparation system provided in Example 1.

[0033] Figure 5 It is a schematic diagram of the structure of the continuous catalyst preparation system provided in Example 2.

[0034] Figure 6 It is a schematic diagram of the structure of the continuous catalyst preparation system provided in Example 3.

[0035] Among them, 10-first feeding and collecting area; 20-first folding area; 21-forwardly arranged folding device; 22-shaping device; 221-upper roller; 222-lower roller; 30-Joule heat heating area; 31-first conductive device; 32-second conductive device; 33-DC power supply; 40-second folding area; 41-reversely arranged folding device; 42-shaping device; 421-upper roller; 422-lower roller; 50-second feeding and collecting area; 61-upper conductive substrate; 62-lower conductive substrate; 71-first unwinding section; 72-first winding section; 81-second unwinding section; 82-second winding section; 83-support roller; 90-steering roller; 101-upper roller; 102-lower roller. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is further described below by specific implementation methods. It should be understood by those skilled in the art that the embodiments are only to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0037] In a specific embodiment, the present invention provides a catalyst continuous preparation system, which includes a first feeding and receiving zone, a first folding zone, a Joule heat heating zone, a second folding zone and a second feeding and receiving zone arranged in sequence along the conveying direction; an upper conductive substrate and a lower conductive substrate that are parallel to each other and transported independently are arranged between the first feeding and receiving zone and the second feeding and receiving zone; the first feeding and receiving zone and the second feeding and receiving zone are used for placing or collecting samples; the first folding zone and the second folding zone are independently connected to the upper conductive substrate or the lower conductive substrate; the first folding zone 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 zone includes a reverse folding device for unfolding the fold 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 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.

[0038] In the present invention, the upper conductive substrate and the lower conductive substrate are merged when passing through the forward folding device, and the two sides are folded inward to achieve the coating of the sample, avoid the splashing of the sample under the Joule heat shock, and make the sample heated more evenly; in the Joule heat heating zone formed by the first conductive device and the second conductive device, the upper conductive substrate, the lower conductive substrate and the first conductive device and the second conductive device form a passage to generate Joule heat to achieve the purpose of heating the sample, so it is also applicable to insulating samples; after the heating is completed, the upper conductive substrate and the lower conductive substrate are unfolded by the reverse folding device, and the upper conductive substrate and the lower conductive substrate are separated, which is convenient for the collection of the prepared catalyst; the present invention utilizes the forward folding device and the reverse folding device arranged in the first folding zone and the second folding zone in reverse order to achieve the two-way automatic merging and separation of the upper conductive substrate and the lower conductive substrate, and then the automatic feeding and receiving 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 set in the forward direction, it can constrain the upper conductive substrate and the lower conductive substrate to merge and fold the two sides inward, and when set in the reverse direction, the upper conductive substrate and the lower conductive substrate are unfolded and separated from each other. The present invention does not impose special limitations on 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 structure shown has two sides that are spirally or quasi-spirally folded inward along the length direction, the spiral radius gradually decreases, and the sheet structure is flat at the minimum spiral radius. When set in the forward direction, the upper conductive substrate and the lower conductive substrate enter the folding device from the side with the larger spiral radius. Under the constraint of the folding device, the upper conductive substrate and the lower conductive substrate are combined, and the two sides are spirally folded inward, passing through the flat outlet at the minimum spiral radius to complete the folding; when set in the reverse direction, the combined upper conductive substrate and the lower conductive substrate enter the folding device from the side with the smallest spiral radius. As the spiral radius increases, the folding expands, and the upper conductive substrate and the lower conductive substrate are separated.

[0041] In some embodiments, the folding device has a tunnel structure that runs through the conveying direction, such as Figure 3 As shown, the tunnel structure corresponds to the path of the upper conductive substrate and the lower conductive substrate being merged and folded on both sides along the conveying direction. When the folding device is set in the forward direction, the direction parallel to the side surface of the folding device with the largest specific surface area is taken as the horizontal direction, and along the conveying direction of the upper conductive substrate and the lower conductive substrate, the width of the tunnel structure in the horizontal direction gradually decreases, constraining the upper conductive substrate and the lower conductive substrate to fold inward on both sides, and at the same time, the height in the vertical direction is reduced to complete the folding; when the folding device is set in the reverse direction, the merged upper conductive substrate and the lower conductive substrate enter the tunnel structure from the side with the smaller width in the horizontal direction, and the folding is unfolded under the constraint of the tunnel structure to achieve the separation of the upper conductive substrate and the lower conductive substrate.

[0042] The present invention utilizes folding devices arranged in opposite directions in the first folding area and the second folding area to realize bidirectional automatic merging and separation of the upper conductive substrate and the lower conductive substrate, thereby realizing automatic feeding and collecting of materials in the continuous preparation process, thereby ensuring stable and 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 belt-shaped conductive substrate, the upper conductive substrate or the lower conductive substrate circulates back and forth along the conveying direction, and continuous production of the catalyst can be achieved 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, support rollers can be adaptively added to the first conveying device or the second conveying device according to the structural stability requirements of the preparation system. The setting of the support rollers is a conventional technical means in the field and is not specifically limited by the present invention.

[0046] In some embodiments, according to actual production needs, multiple Joule heating zones can be set up. 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 adjusting the conveying speed, the temperature and time of the sample when passing through different Joule heating zones can be controlled to meet the requirements of multi-stage heat treatment processes with different temperatures and times.

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

[0048] In some embodiments, the catalyst continuous 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 portion and a first winding portion, and the first unwinding portion and the first winding portion 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 portion and a second winding portion, and the second unwinding portion and the second winding portion are respectively arranged in the first feeding and receiving area and the second feeding and receiving area.

[0049] In some embodiments, the first unwinding section, the second unwinding section, the first rewinding section, and the second rewinding section each independently include a conveying roller driven by a motor.

[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, thereby achieving controllable conveying direction and conveying speed of the upper conductive substrate and the lower conductive substrate. 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, thereby controlling the heating time of the sample.

[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 0.1s-300s, for example, it can be 0.1s, 0.5s, 1.0s, 2.0, 5.0s, 10.0s, 20.0s, 50.0s, 100.0s, 150.0s, 200.0s, 250.0s or 300.0s, including but not limited to the listed values, and other unlisted values ​​within the numerical range are also applicable.

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

[0053] In some embodiments, shaping devices are provided in the first hem region and the second hem region to fit the upper conductive substrate and the lower conductive substrate together.

[0054] In some embodiments, 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.

[0055] In some embodiments, the setting of the shaping device can further improve the fit between the upper conductive substrate and the lower conductive substrate after the conductive substrate is folded by the folding unit, thereby 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 that the upper conductive substrate and the lower conductive substrate are separated by another folding unit.

[0056] In some embodiments, the upper roller and the lower roller each independently include at least one roller, and the number of rollers can be determined according to actual production needs. For example, the number of rollers 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 folding zone and the Joule heat heating zone, and between the Joule heat heating zone and the second folding zone.

[0058] In the present invention, steering rollers are used to change the conveying directions of the upper conductive substrate and the lower conductive substrate. When passing through the Joule heat heating zone, the shapes of the upper conductive substrate and the lower conductive substrate are adjusted to a "U-shape" to increase the contact area between the conductive substrate and the first conductive device and the second conductive device, thereby avoiding excessive instantaneous heat generation due to too small a contact area and too large an ohmic impedance.

[0059] When there are multiple Joule heat heating zones in the continuous catalyst preparation system, steering rollers can also be set between different Joule heat heating zones to change the directions of the upper conductive substrate and the lower conductive substrate and adjust the contact areas 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 set between different Joule heat heating zones to adjust the deformation of the upper and lower conductive substrates caused by the reaction of the samples and maintain good contact between the upper conductive substrate and the lower conductive substrate.

[0060] In some embodiments, the Joule heat heating zone is further 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.

[0061] In the present invention, the first conductive device and the second conductive device are electrically connected to the power supply device, respectively, and the voltage or current of the power supply device is controlled to control the current in the conductive path formed between the conductive substrate and the conductive unit, thereby controlling the generated Joule heat and 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 DC power supply or an AC power supply.

[0062] In some embodiments, the Joule heat heating zone is further 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, 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 also applicable.

[0063] In the present invention, the specific structure of the temperature measuring device is no longer particularly limited, as long as it can meet the temperature measurement 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 each independently include a conductive roller, and the conductive roller is made of metal and / or graphite.

[0066] In some embodiments, the present invention further provides a method for continuous preparation of a catalyst, wherein the method for continuous preparation of a catalyst adopts the continuous preparation system for a catalyst according to the first aspect, and the method for continuous preparation of a catalyst comprises:

[0067] The upper conductive substrate and the lower conductive substrate are transported from the first feeding and collecting area or the second feeding and collecting area to the second feeding and collecting area or the first feeding and collecting area, and the sample is placed from the first feeding and collecting area or the second feeding and collecting area to the upper surface of the lower conductive substrate. When reaching the first folding area or the second folding area, under the action of the forward folding device or the reverse folding device, the upper conductive substrate and the lower conductive substrate are merged, and the two sides are folded inward, so that the sample is coated 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 area, and a passage is formed between the first conductive device, the second conductive device, the upper conductive substrate and the lower conductive substrate, Joule heat is generated, and the sample is heated; 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, and 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 feeding and collecting area or the first feeding and collecting area.

[0068] The present invention adopts the structural design of the first feeding and collecting zone, the first folding zone, the Joule heat heating zone, the second folding zone and the second feeding and collecting zone, and the reverse arrangement of the forward folding device and the reverse folding device in the first folding zone and the second folding zone. When the catalyst is prepared using the catalyst continuous preparation system provided by the present invention, the continuous preparation of the catalyst can be achieved regardless of whether the catalyst continuous preparation system runs from the first feeding and collecting zone to the second feeding and collecting zone or from the second feeding and collecting zone to the first feeding and collecting zone.

[0069] As a preferred technical scheme in another specific embodiment of the present invention, taking the operation from the first feeding and collecting area to the second feeding and collecting area as an example, the continuous preparation method of the catalyst provided by the present invention can be: the upper conductive substrate and the lower conductive substrate are transported from the first feeding and collecting area to the second feeding and collecting area, and the sample is placed from the first feeding and collecting area to the upper surface of the lower conductive substrate. When reaching the first folding area, under the action of the forward folding device, the upper conductive substrate and the lower conductive substrate are merged, and the two sides are folded inward to coat the sample 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 area, 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 and heat the sample; after the sample is heated, the upper conductive substrate and the lower conductive substrate coated with the sample are transported to the second folding area, and under the action of the reverse folding device, the folds on both sides of the upper conductive substrate and the lower conductive substrate are unfolded, the upper conductive substrate and the lower conductive substrate are separated, and the prepared catalyst is collected by the second feeding and collecting area.

[0070] When the upper conductive substrate and the lower conductive substrate are all transported from the first feeding and receiving area to the second feeding and receiving area, the transport direction of the upper conductive substrate and the lower conductive substrate is changed to run from the second feeding and receiving area to the first feeding and receiving area, and the sample is placed from the second feeding and receiving area to the upper surface of the lower conductive substrate, and transported to the second folding area. Under the action of the reverse folding device, the upper conductive substrate and the lower conductive substrate are merged, and the two sides are folded inward, and the sample is wrapped between the upper conductive substrate and the lower conductive substrate, and transported to the Joule heat heating area to heat the sample. After the sample is heated, it is transported to the first folding area. Under the action of the forward folding device, the folds 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 catalyst continuous preparation system, such as Figure 4 As shown, the catalyst continuous preparation system comprises a first material feeding and receiving area 10, a first folding area 20, a Joule heat heating area 30, a second folding area 40 and a second material feeding and receiving area 50 which are arranged in sequence;

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

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

[0075] The first folding area 20 and the second folding area 40 are independently connected to the upper conductive substrate 61 or the lower conductive substrate 62; the first folding area 20 includes a folding device 21 and a shaping device 22 arranged in a positive direction, and the structural schematic diagram of the folding device is shown in Figure 1 As shown, the shaping device 22 includes an upper roller 221 and a lower roller 222, and the forwardly arranged folding device 21 is used to merge the separated upper conductive substrate 61 and the lower conductive substrate 62, and fold the two sides of the upper conductive substrate 61 and the lower conductive substrate 62 inwardly; the second folding area 40 includes a reversely arranged folding device 41 and a shaping device 42, and the shaping device 42 includes an upper roller 421 and a lower roller 422, and the reversely arranged folding device 41 is used to unfold the folded edges of the merged upper conductive substrate 61 and the 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 are in 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 spaced apart along the conveying direction. The first conductive device 31 and the second conductive device 32 are both graphite conductive rollers.

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

[0078] This embodiment also provides a method for continuously preparing a catalyst. The method for continuously preparing a catalyst adopts the continuous catalyst preparation system of this embodiment. The method for continuously preparing a catalyst comprises:

[0079] The upper conductive substrate 61 and the lower conductive substrate 62 are transported from the first feeding and receiving area 10 to the second feeding and receiving area 50. The sample is placed from the first feeding and receiving area 10 to the upper surface of the lower conductive substrate 62. When the sample reaches the first folding area 20, the upper conductive substrate 61 and the lower conductive substrate 62 are combined and folded inwardly on both sides under the action of the folding device 21 arranged in the forward direction. The upper conductive substrate 61 and the lower conductive substrate 62 are further attached to each other under the action of the shaping device 22, 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 coated with the sample are passed through the turning roller 90 to form a "U"-shaped structure and pass through the Joule heat heating zone 30. The DC power supply 33 applies current 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 is heated, the upper conductive substrate 61 and the lower conductive substrate 62 coated with the sample are transported to the second folding area 40. After being adjusted by the shaping device 42, under the action of the reversely arranged folding device 41, the folded edges of the combined upper conductive substrate 61 and the lower conductive substrate 62 are unfolded, and the upper conductive substrate 61 and the lower conductive substrate 62 are separated. The prepared catalyst is collected by the second feeding and collecting area 50.

[0082] When the upper conductive substrate 61 and the lower conductive substrate 62 are all transported from the first feeding and collecting area 10 to the second feeding and collecting area 50, the transport direction of the upper conductive substrate 61 and the lower conductive substrate 62 is changed, and they are transported in the opposite direction from the second feeding and collecting area 50 to the first feeding and collecting area 10. The sample is placed from the second feeding and collecting area 50 onto the upper surface of the lower conductive substrate 62 and transported to the second folding area 40. Under the action of the reversely arranged folding device 41, the upper conductive substrate 61 and the lower conductive substrate 62 are merged, and the two sides are folded inwardly to wrap the sample between the upper conductive substrate 61 and the lower conductive substrate 62, and transported to the Joule heat heating area 30 to heat the sample. After the sample is heated, it is transported to the first folding area 20. Under the action of the forwardly arranged folding device 21, the folded edges of the merged upper conductive substrate 61 and the lower conductive substrate 62 are unfolded, and the upper conductive substrate 61 is separated from the lower conductive substrate 62. The prepared catalyst is collected by the first feeding and collecting area 10.

[0083] Example 2

[0084] This embodiment provides a catalyst continuous preparation system, such as Figure 5 As 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 are endless ring-shaped carbon cloth conductive substrates. In order to improve the stability of the catalyst continuous preparation system, in the second conveying device, a support roller 83 is added in the first feeding and receiving area 10 and the second feeding and receiving area 50. The structural schematic diagram of the folding device used in this embodiment is shown in Figure 2 shown.

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

[0086] Example 3

[0087] This embodiment provides a catalyst continuous preparation system, such as Figure 6 As shown, the difference between this embodiment and embodiment 1 is that there are two Joule heat heating zones 30, and a steering roller 90 is additionally provided between the two Joule heat heating zones 30, so that the upper conductive substrate 61 and the lower conductive substrate 62 both present a "U-shaped" structure when passing through the two Joule heat heating zones, and a shaping device consisting of an upper roller 101 and a lower roller 102 is provided between the two Joule heat heating zones 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 continuous preparation of catalysts. The method for continuous preparation of catalysts adopts the continuous preparation system of catalysts in this embodiment. The specific preparation method is the same as that in Example 1 except that the sample passes through two Joule heat heating zones.

[0089] The applicant declares that the above is only a specific implementation mode 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 thought of by those skilled in the art within the technical scope disclosed by the present invention are within the protection scope and 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 placing or collecting 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 includes a first conductive device and a second conductive device that make 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.

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 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 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: Steering rollers are independently arranged between the first folding zone and the Joule heat heating zone, and between the Joule heat heating zone and the second folding zone.

6. 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.

7. 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.

8. 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.

9. 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.

10. 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 9, 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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