Appearance screening system and production system of catalyst

Abstract

The embodiment of the utility model provides an appearance screening system and a production system of a catalyst, and belongs to the field of catalyst manufacturing. The shape screening system comprises a first screening device, a second screening device and a third screening device, the first screening device comprises a recognition device, a controller and a removing device, and the recognition device is used for recognizing the length of a catalyst; the controller is in communication connection with the recognition device and the removal device; the rejecting device is used for rejecting the catalyst with the abnormal length to the transfer bin according to the rejecting signal; and the second screening device comprises a strip breaking device, and the strip breaking device is used for cutting the catalyst in the transfer bin. According to the utility model, the screening of catalyst carriers with different shapes or lengths and the treatment and recycling of unqualified products can be realized, and the particle size distribution concentration degree can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of catalyst manufacturing, in particular to a catalyst shape screening system and a production system. Background Art

[0002] The petrochemical industry has certain requirements for the length of strip catalysts. During the production process, the strip carrier needs to be screened for appearance to meet the index requirements for length distribution. However, the strip-breaking device used in catalyst production mainly relies on the cutting action of a cutter to cut the strip under certain conditions. This direct strip-breaking method will cause the catalyst to have different appearances and a high breakage rate, which seriously affects the appearance quality of the catalyst product and the concentration of the product particle size distribution.

[0003] The prior art has conducted some research on this, but the applicant discovered in the process of implementing this solution that the solutions of the prior art have the following defects: For example, one solution in the prior art discloses a device for sorting the length of strip catalysts, and short strips of 3 mm or less that are less than the strip length requirement are collected into short material collection holes evenly distributed in the furnace drum. This method is mainly aimed at screening and collecting short strips when the lengths of the discharge from the extruder are different, but this method cannot screen and reprocess long strips for reuse, resulting in a low carrier yield. Another solution in the prior art discloses a strip-shaped agent forming device, and the formed strip-shaped agent is conveyed out of the forming liquid tank by a conveyor belt. This method can achieve catalyst length control, but the discharge needs to be washed, and its use has limitations.

[0004] Therefore, it is necessary to further improve the shortcomings of the above solutions. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the purpose of the embodiments of the utility model is to provide a catalyst shape screening system and production system, which can realize the screening of catalyst carriers of different shapes or lengths and the processing and reuse of unqualified products, and can greatly improve the concentration of particle size distribution.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the utility model provides a catalyst shape screening system, the shape screening system comprising: a first screening device, including an identification device, a controller and a rejection device, the identification device is used to identify the length of the catalyst to identify the catalyst with abnormal length and generate length abnormality information; the controller is communicatively connected with the identification device to receive the length abnormality information transmitted by the identification device and generate a rejection signal according to the length abnormality information, the controller is also communicatively connected with the rejection device to send the rejection signal to the rejection device; and the rejection device is used to reject the catalyst with abnormal length to a transfer bin according to the rejection signal, wherein the catalyst with abnormal length includes: the length of the catalyst is greater than a first set threshold value; and a second screening device, including a bar breaking device, wherein the bar breaking device is used to cut the catalyst in the transfer bin.

[0007] Optionally, the identification device includes a projection detector or a high-speed scanner, which is used to obtain an image of the catalyst; and the identification device also includes a grayscale processing composite processor, which is communicatively connected to the projection detector or the high-speed scanner, and the grayscale processing composite processor performs length identification on the catalyst according to the image of the catalyst to identify a catalyst with abnormal length, wherein the catalyst with abnormal length also includes: the length of the catalyst is less than a second set threshold, and the second set threshold is less than the first set threshold.

[0008] Optionally, the rejection device includes a rotating rod and a tail brush, and the rotating rod rotates according to the rejection signal to drive the tail brush to push the catalyst to the transfer bin.

[0009] Optionally, the appearance screening system also includes a raw material bin and a qualified material bin of the catalyst, and the first screening device also includes a first conveyor belt for conveying the catalyst in the raw material bin to the qualified material bin, wherein the raw material bin is located above the starting end of the first conveyor belt in the conveying direction, and the qualified material bin is located below the terminal end of the first conveyor belt in the conveying direction; and / or the identification device is located above the first position of the first conveyor belt, the rejection device is located above the second position of the first conveyor belt, and the transfer bin is located below the second position, wherein the first position is before the second position in the conveying direction.

[0010] Optionally, the first conveyor belt comprises a drying device, and the drying device is used to heat the catalyst on the first conveyor belt.

[0011] Optionally, the shape screening system further comprises a frequency converter, and the frequency converter is used to adjust the running speed of the first conveyor belt.

[0012] Optionally, the second screening device also includes a rocking screen, which is used to screen the catalyst after breaking by length. The rocking screen also includes a screen, which divides the rocking screen into an upper layer and a lower layer. The screen is used to screen the catalyst with a length less than or equal to the size of the screen holes to the lower layer of the rocking screen, and the catalyst with a length greater than the size of the screen holes is retained in the upper layer of the rocking screen.

[0013] Optionally, the rocking screen includes an upper screen and a lower screen, and the upper screen and the lower screen divide the rocking screen into an upper layer, a middle layer and a lower layer, and the catalyst with a length greater than the hole size of the upper screen is retained in the upper layer of the rocking screen by the upper screen and the lower screen, the catalyst with a length less than or equal to the hole size of the upper screen and greater than the hole size of the lower screen is screened to the middle layer of the rocking screen, and the catalyst with a length less than or equal to the hole size of the lower screen is screened to the lower layer of the rocking screen.

[0014] Optionally, the second screening device also includes a second conveyor belt or an elevator, and the shape screening system also includes a crushing bin and a qualified bin. When the rocking screen includes a screen, the second conveyor belt or the elevator conveys the catalyst above the screen to the qualified bin, and the catalyst below the screen flows to the crushing bin by gravity through a soft connection; or when the rocking screen includes an upper screen and a lower screen, the second conveyor belt or the elevator conveys the catalyst above the lower screen to the qualified bin, and the catalyst above the upper screen and below the lower screen flows to the crushing bin by gravity through a soft connection.

[0015] On the other hand, the utility model provides a catalyst production system, wherein the production system comprises a screening system according to the shape of the catalyst described above.

[0016] Through the above technical solution, compared with the prior art, the utility model has the following advantages:

[0017] Automatically screen the shape or length of strip catalysts, and selectively screen unqualified products for strip breaking, avoiding the total strip breaking of the traditional strip breaking method, thereby improving the concentration of particle size distribution of carrier molding preparation. By breaking unqualified products and reusing them, compared with the existing length control method, the carrier yield is improved and the reliability is high.

[0018] At the same time, this solution has a high level of automation and continuity, and the entire process is fully continuous and automated. It is easy and reliable to operate, requires less labor, has low labor intensity, and has stable product quality.

[0019] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the embodiments of the present utility model and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present utility model, but do not constitute a limitation on the embodiments of the present utility model. In the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of a catalyst shape screening system provided according to an embodiment of the utility model.

[0022] Description of Reference Numerals

[0023] 1. Raw material bin, 2. First conveyor belt, 3. Detector, 4. Processor, 5. Controller, 6. Rejection device, 7. Qualified material bin, 8. Transfer bin, 9. Bar breaking device, 10. Swinging screen, 11. Crushing material bin. DETAILED DESCRIPTION

[0024] The specific implementation of the embodiment of the utility model is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model.

[0025] The utility model first provides a catalyst shape screening system, such as Figure 1 As shown, the shape screening system may include a first screening device and a second screening device. The first screening device may include an identification device, a controller 5 and a rejection device 6. The second screening device may include a strip breaking device 9.

[0026] Among them, the identification device can be used to identify the length of the catalyst to identify the catalyst with abnormal length and generate abnormal length information. It is worth noting that the specific way in which the identification device identifies the catalyst with abnormal length and generates abnormal length information can adopt the known technology of the prior art, and is not the focus or key point of this solution. Among them, the catalyst with abnormal length may include: the length of the catalyst is greater than the first set threshold or the length of the catalyst is less than the second set threshold, wherein the first set threshold should be greater than the second set threshold. In other words, the catalyst whose size is outside the set interval needs to be identified as a catalyst with abnormal length, and the catalyst whose size is within the set interval is identified as a catalyst with qualified length.

[0027] In one embodiment, the identification device may include a detector 3 and a processor 4. The detector 3 may be used to obtain an image of the catalyst, and the detector 3 and the processor 4 are connected in communication. The processor 4 identifies the length of the catalyst according to the image to identify the catalyst with abnormal length. Preferably, the detector 3 may be a projection detector or a high-speed scanner, or any other identification method known in the industry. Preferably, the processor 4 may be a grayscale processing composite processor, or any other processing method known in the industry.

[0028] The controller 5 is in communication connection with the identification device to receive the abnormal length information transmitted by the identification device, and generates a rejection signal according to the abnormal length information. It is worth noting that the specific manner in which the controller 5 generates the rejection signal according to the abnormal length information can adopt the known technology of the prior art, and is not the focus or key point of this solution. In addition, the controller 5 can also be in communication connection with the rejection device 6 to send the rejection signal to the rejection device 6.

[0029] The rejection device 6 is used to reject the catalyst with abnormal length to the transfer bin 8 according to the rejection signal. In one embodiment, the rejection device 6 may include a rotating rod and a tail brush, and the rotating rod may rotate according to the rejection signal to drive the tail brush to push the catalyst to the transfer bin 8. The transfer bin 8 may also be referred to as a recyclable bin, and its upper portion may have a wide-mouth opening to facilitate receiving the catalyst rejected by the tail brush and prevent the catalyst from falling outside the bin. In addition, the outer dimensions of the transfer bin 8 may be comprehensively considered based on the processing volume of the catalyst and the installation space of the first screening device.

[0030] In one embodiment, the shape screening system may further include a catalyst raw material bin 1 and a qualified material bin 7. The specifications and discharge method of the raw material bin 1 may be selected according to the process production throughput, and the discharge mechanism may be a flow control method known in the industry. At the same time, the specifications of the qualified material bin 7 may also be selected according to the process production throughput.

[0031] In addition, the first screening device may further include a first conveyor belt 2 for conveying the catalyst in the raw material bin 1 to the qualified bin 7. The specifications of the first conveyor belt 2 may be comprehensively considered according to the process conditions and the processing volume requirements. Figure 1 As shown, the raw material bin 1 can be located above the starting end of the first conveyor belt 2 in the conveying direction, and the qualified material bin 7 can be located below the terminating end of the first conveyor belt 2 in the conveying direction.

[0032] The identification device can be located above the first position of the first conveyor belt 2, the rejection device 6 can be located above the second position of the first conveyor belt 2, and the transfer bin 8 can be located below the second position to ensure that the rejected catalyst can fall into the transfer bin 8. In the conveying direction, the first position should be before the second position, so as to ensure that the catalyst is identified first and then the abnormal catalyst is rejected.

[0033] In one embodiment, the first conveyor belt 2 may further include a drying device, which is used to heat the catalyst on the first conveyor belt 2, so as to complete the drying process during the conveying process. In another embodiment, the shape screening system may further include a frequency converter, which is used to adjust the running speed of the first conveyor belt 2. Preferably, the frequency converter can adjust the running speed of the first conveyor belt 2 by adjusting the number of revolutions of the main drive. Through the heating function and the speed adjustment function, different conveying speeds can be selected according to the humidity of different catalysts, thereby increasing the applicability of the present application.

[0034] Among them, the bar breaking device 9 can be used to cut the catalyst in the transfer bin 8. A small bar breaking device known in the industry, such as a bar breaking machine, can be selected as the bar breaking device 9, and its specifications and models can be comprehensively considered according to process requirements and processing volume.

[0035] In one embodiment, the second screening device may further include a rocking screen 10, which may be used to screen the length of the catalyst after breaking, so as to screen the catalyst with a length less than the second set threshold to the lower layer of the rocking screen 10, and a screening device known in the industry may be selected as the rocking screen 10. In one embodiment, the rocking screen 10 may include a screen, the size of the screen holes may slightly float above and below the second set threshold, the screen divides the rocking screen 10 into an upper layer and a lower layer, the screen may screen the catalyst with a length less than or equal to the size of the screen holes to the lower layer of the rocking screen 10, and at the same time retain the catalyst with a length greater than the size of the screen holes in the upper layer of the rocking screen 10, thereby achieving the function of catalyst screening.

[0036] In one embodiment, the second screening device may further include a second conveyor belt or an elevator, which is used to convey the catalyst in the transfer bin 8 to the bar breaking device 9, and to convey the broken catalyst from the bar breaking device 9 to the swing screen 10. The transfer bin 8 should be located above the starting end of the conveying direction of the second conveyor belt, and the swing screen 10 should be located below the ending end of the conveying direction of the second conveyor belt, so as to facilitate the operation of the conveyor belt.

[0037] The shape screening system may further include a crushing bin 11 and a qualified bin 7, and the catalyst located at the lower layer of the swing screen 10 may be transported to the crushing bin 11, and the catalyst located at the upper layer of the swing screen 10 may be transported to the qualified bin 7. For example, the catalyst at the lower layer of the swing screen 10 may flow to the crushing bin 11 by gravity through a flexible connection, and the catalyst at the upper layer of the swing screen 10 may be transported to the qualified bin 7 through a second conveyor belt or an elevator. In addition, the crushing bin 11 should be located below the discharge port of the lower layer of the swing screen 10.

[0038] In another embodiment, the rocking screen 10 may include an upper screen and a lower screen. The hole size of the upper screen can float slightly above and below a first set threshold, and the hole size of the lower screen can float slightly above and below a second set threshold. The upper screen and the lower screen divide the rocking screen 10 into an upper layer, a middle layer and a lower layer. The upper screen can retain the catalyst whose length is greater than the hole size of the upper screen in the upper layer of the rocking screen 10, and screen the catalyst whose length is less than or equal to the hole size of the upper screen and greater than the hole size of the lower screen to the middle layer of the rocking screen 10, and at the same time screen the catalyst whose length is less than or equal to the hole size of the lower screen to the lower layer of the rocking screen 10, thereby realizing the catalyst screening function.

[0039] Among them, the transfer bin 8, the bar breaking device 9, the swing screen 10, the second conveyor belt or elevator, and the crushing bin 11 can be arranged from top to bottom. For example, the bar breaking device 9 is located below the discharge port of the transfer bin 8, the swing screen 10 is located below the discharge port of the bar breaking device 9, and the crushing bin 11 is located below the discharge port of the lower layer of the swing screen 10. The catalyst on the upper screen of the swing screen 10 and the catalyst under the lower screen can flow to the crushing bin 11 by gravity through a soft connection, and the catalyst in the middle layer between the upper screen and the lower screen of the swing screen 10 can be transported to the qualified bin 7 through the second conveyor belt or elevator. In addition, the crushing bin 11 should be located below the discharge port of the lower layer of the swing screen 10.

[0040] Through the above technical solution, compared with the prior art, the present application has the following advantages:

[0041] The recognition device identifies the shape or length of the strip catalyst on the conveyor belt, and the rejection device removes the catalyst that does not meet the process requirements. The qualified catalyst carrier enters the qualified material bin; the unqualified catalyst carrier is recovered to the recycle material bin, and further broken by the strip breaking device, and screened by the swing screen. The material discharged from the middle layer of the swing screen can be reused in the qualified material bin, and the material discharged from the upper and lower layers of the swing screen can be loaded into the crushing material bin. In this way, the shape or length of the strip catalyst can be automatically screened, and unqualified products can be selectively screened and broken, avoiding the total breaking of the traditional strip breaking method, thereby improving the concentration of the particle size distribution of the carrier molding preparation. Compared with the existing length control method, the carrier yield is improved and the reliability is high.

[0042] In addition, while the material is continuously and evenly transported out of the raw material bin by the conveyor belt, a heating function can be selectively added to meet the drying process conditions.

[0043] In summary, this solution has a high level of automation and continuity, the entire process is fully continuous and automated, the operation is simple and reliable, requires less labor, has low labor intensity, and has stable product quality.

[0044] To achieve the further purpose of the utility model, the technical method adopted in the present application may also include the following steps:

[0045] (1) Add catalyst carriers into the raw material bin and keep sufficient catalyst carriers in the raw material bin at all times. The specifications of the raw material bin should be adaptively selected according to the process production throughput.

[0046] (2) Start the discharge mechanism of the raw material bin and control the discharge amount to meet the requirements of the process conditions. The discharge mechanism can be any flow control method known in the industry.

[0047] (3) Start the first conveyor belt, and the catalyst carrier moves along the first conveyor belt to complete the material transportation process. The first conveyor belt can be comprehensively considered according to the process conditions and the processing volume requirements. Preferably, the frequency converter adjusts the number of revolutions of the main drive of the first conveyor belt, thereby adjusting the running speed of the first conveyor belt, and a heating function can be added to achieve the drying process during the transportation process.

[0048] (4) The catalyst carrier moves along the first conveyor belt, and the shape recognition system is activated to complete shape or length recognition. The shape recognition system can be selected from a projection detector, a high-resolution camera, a grayscale processing composite processing method, or any other recognition method known in the industry.

[0049] (5) The catalyst carriers travel through the first conveyor belt, and the qualified catalyst carriers enter the qualified material bin. The rejection device moves the unqualified catalyst carriers into the recyclable material bin, completing the screening process. The rejection device can be considered comprehensively based on the processing volume and installation space; preferably, the inlet of the recyclable material bin can be set to a wide mouth, and the external dimensions can be considered comprehensively based on the processing volume and installation space of the conveyor belt in actual operation.

[0050] (6) Start the bar breaking device and the discharging mechanism of the recyclable material bin to complete the bar breaking process of the unqualified products. The bar breaking device can be any bar breaking equipment known in the industry, such as a bar breaking machine, and the specifications and models can be comprehensively considered according to the process requirements and processing volume in actual operation.

[0051] (7) Start the swing screen to complete the screening process of the catalyst carrier after the breaking of the bars. The discharge from the middle layer of the swing screen enters the qualified material bin, and the discharge from the lower layer of the swing screen enters the crushing material bin. The swing screen can be any screening equipment known in the industry, and the crushing material bin should be selected according to the process production processing capacity.

[0052] The specific implementation method of the present application is further described in detail below through examples and comparative examples, but these examples are not intended to limit the present invention.

[0053] Example 1

[0054] (1) Add the catalyst carrier into the raw material bin. The amount of the catalyst carrier added shall not exceed 2 / 3 of the capacity of the raw material bin.

[0055] (2) Start the discharge mechanism of the raw material bin to meet the requirements of the process conditions, and the catalyst carrier enters the first conveyor belt.

[0056] (3) Start the first conveyor belt, adjust the running speed of the first conveyor belt to 10m / h through the frequency converter, and start the drying device.

[0057] (4) The catalyst carrier moves along the first conveyor belt, and the shape recognition system is started to realize the length recognition of the catalyst carrier.

[0058] (5) The catalyst carriers travel through the first conveyor belt, and qualified catalyst carriers enter the qualified material bin, and the rejection device moves the unqualified catalyst carriers into the material bin to be reused;

[0059] (6) Start the strip-breaking device and the discharging mechanism of the material bin to be recycled. The strip-breaking device will break the unqualified products into strips, thus completing the strip-breaking process;

[0060] (7) Start the swing screen, select the screen size according to the process requirements, and realize the screening process of unqualified products. The middle layer of the screening material enters the qualified material bin, and the unqualified products of the upper and lower layers enter the crushing bin.

[0061] (8) When shutting down, unload all materials from the shutdown discharge port, clean the equipment, and wait until the next shutdown to resume use.

[0062] The catalyst carriers in the qualified silo were retrieved for particle size distribution analysis, and the data are shown in Table 1.

[0063] Comparative Example 1

[0064] The conventional bar breaking method was adopted, and the bar breaking was performed using the same bar breaking machine as in Example 1. The catalyst carrier in the qualified material bin of Comparative Example 1 was taken for particle size distribution analysis, and the data is shown in Table 1.

[0065] Table 1: Analytical data of Example 1 and Comparative Example 1

[0066] Example 1 Comparative Example 1 Particle size distribution, mm Proportion, % Proportion, % ＜2 1.52 6.91 2～3 13.85 16.68 3～5 57.79 49.96 5～8 26.19 18.39 ＞8 0.65 8.06 2～8 97.83 85.03

[0067] Example 2

[0068] (1) Add the catalyst carrier into the raw material bin. The amount of the catalyst carrier added shall not exceed 2 / 3 of the capacity of the raw material bin.

[0069] (2) Start the discharge mechanism of the raw material bin to meet the requirements of the process conditions, and the catalyst carrier enters the first conveyor belt.

[0070] (3) Start the first conveyor belt, adjust the running speed of the first conveyor belt to 6m / h through the frequency converter, and start the drying device.

[0071] (4) The catalyst carrier moves along the first conveyor belt, and the shape recognition system is started to realize the length recognition of the catalyst carrier.

[0072] (5) The catalyst carriers travel through the first conveyor belt, and qualified catalyst carriers enter the qualified material bin, and the rejection device moves the unqualified catalyst carriers into the material bin to be reused;

[0073] (6) Start the strip-breaking device and the discharging mechanism of the material bin to be recycled. The strip-breaking device will break the unqualified products into strips, thus completing the strip-breaking process;

[0074] (7) Start the swing screen and select the screen size according to the process requirements to realize the screening process of unqualified products. The middle layer of the material enters the qualified material bin, and the unqualified products of the upper and lower layers enter the crushing bin.

[0075] (8) When shutting down, unload all materials from the shutdown discharge port, clean the equipment, and wait until the next shutdown to resume use.

[0076] The catalyst carriers in the qualified silo were retrieved for particle size distribution analysis, and the data are shown in Table 2.

[0077] Comparative Example 2

[0078] The conventional bar breaking method was adopted, and the bar breaking was performed using the same bar breaking machine as in Example 2. The catalyst carrier in the qualified material bin of Comparative Example 2 was taken for particle size distribution analysis, and the data is shown in Table 2.

[0079] Table 2: Analytical data of Example 2 and Comparative Example 2

[0080] Example 2 Comparative Example 2 Particle size distribution, mm Proportion, % Proportion, % ＜3 2.68 11.03 3～5 64.96 59.69 5～8 30.39 26.53 ＞8 2.68 11.03 3～8 95.35 86.22

[0081] According to the analysis results, the particle size distribution of the catalyst carrier prepared by the automatic catalyst shape control method of the present application is significantly more concentrated than the particle size distribution of the catalyst carrier prepared by the traditional strip breaking method. This shows that after adopting the scheme of the present application, the yield of the carrier that meets the process requirements is higher, and the concentration of the particle size distribution of the carrier molding preparation can be significantly improved.

[0082] On the other hand, the utility model also provides a catalyst production system, which may include a screening system based on the shape of the catalyst described above.

[0083] The beneficial effects of the catalyst production system can be found in the above description of the catalyst shape screening system, which will not be repeated here.

[0084] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0085] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A catalyst shape screening system, characterized in that: The profile screening system comprises: The first screening device includes an identification device, a controller and a rejection device, Wherein, the identification device is used to identify the length of the catalyst to identify the catalyst with abnormal length and generate abnormal length information; The controller is connected in communication with the identification device to receive the abnormal length information transmitted by the identification device and generate a rejection signal according to the abnormal length information, and the controller is also connected in communication with the rejection device to send the rejection signal to the rejection device; and The rejecting device is used to reject the catalyst with abnormal length to the transfer bin according to the rejecting signal, wherein the catalyst with abnormal length includes: the length of the catalyst is greater than a first set threshold; and The second screening device comprises a bar cutting device, wherein the bar cutting device is used to cut the catalyst in the transfer bin.

2. The shape screening system according to claim 1, characterized in that: The identification device includes a projection detector or a high-speed camera, and the projection detector or the high-speed camera is used to obtain an image of the catalyst; as well as The identification device also includes a grayscale processing composite processor, which is communicatively connected to the projection detector or the high-speed scanner. The grayscale processing composite processor identifies the length of the catalyst based on the image of the catalyst to identify a catalyst with abnormal length, wherein the catalyst with abnormal length also includes: the length of the catalyst is less than a second set threshold, and the second set threshold is less than the first set threshold.

3. The shape screening system according to claim 1, characterized in that: The rejecting device includes a rotating rod and a tail brush. The rotating rod rotates according to the rejecting signal to drive the tail brush to push the catalyst to the transfer bin.

4. The shape screening system according to claim 1, characterized in that: The shape screening system also includes a raw material bin and a qualified material bin of the catalyst, and the first screening device also includes a first conveyor belt for conveying the catalyst in the raw material bin to the qualified material bin, wherein the raw material bin is located above the starting end of the first conveyor belt in the conveying direction, and the qualified material bin is located below the terminating end of the first conveyor belt in the conveying direction; and / or The identification device is located above a first position of the first conveyor belt, the rejection device is located above a second position of the first conveyor belt, and the transfer bin is located below the second position, wherein the first position is before the second position in the conveying direction.

5. The shape screening system according to claim 4, characterized in that: The first conveyor belt includes a drying device, and the drying device is used to heat the catalyst on the first conveyor belt.

6. The shape screening system according to claim 4 or 5, characterized in that: The shape screening system also includes a frequency converter, which is used to adjust the running speed of the first conveyor belt.

7. The shape screening system according to claim 1, characterized in that: The second screening device also includes a rocking screen, which is used to screen the catalyst after breaking by length. The rocking screen also includes a screen, which divides the rocking screen into an upper layer and a lower layer. The catalyst with a length less than or equal to the size of the screen hole is screened to the lower layer of the rocking screen through the screen, and the catalyst with a length greater than the size of the screen hole is retained in the upper layer of the rocking screen.

8. The shape screening system according to claim 7, characterized in that: The rocking screen comprises an upper screen and a lower screen, and the upper screen and the lower screen divide the rocking screen into an upper layer, a middle layer and a lower layer, and the catalyst with a length greater than the hole size of the upper screen is retained in the upper layer of the rocking screen by the upper screen and the lower screen, and the catalyst with a length less than or equal to the hole size of the upper screen and greater than the hole size of the lower screen is screened to the middle layer of the rocking screen, and the catalyst with a length less than or equal to the hole size of the lower screen is screened to the lower layer of the rocking screen.

9. The shape screening system according to claim 8, characterized in that: The second screening device also includes a second conveyor belt or elevator, and the shape screening system also includes a crushing bin and a qualified bin. In the case where the swing screen includes a screen, the second conveyor belt or the elevator conveys the catalyst above the screen to the qualified bin, and the catalyst below the screen flows to the crushing bin by gravity through a flexible connection; or When the swing screen includes an upper screen and a lower screen, the second conveyor belt or the elevator conveys the catalyst above the lower screen to the qualified bin, and the catalyst above the upper screen and below the lower screen flows to the crushing bin by gravity through a flexible connection.

10. A catalyst production system, characterized in that: The production system comprises a catalyst profile screening system according to any one of claims 1-9.

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