Oxygen-free screening and discharging device for pre-reduction type catalyst
By designing an oxygen-free screening and unloading device, a nitrogen machine is used to create an oxygen-free environment during the screening and unloading process, the problem that pre-reducing catalyst oxidation reaction, screening and unloading cannot be carried out simultaneously, and efficient catalyst treatment is achieved.
Patent Information
- Application Number
- CN202421613302.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The prior art lacks an anaerobic screening environment, which leads to the pre-reducing catalysts being prone to oxidation reactions during screening and unloading, and the screening and unloading cannot be carried out simultaneously.
An oxygen-free screening and unloading device is designed, including a nitrogen machine, a screening cylinder, a discharge cylinder, a cover, an inlet pipe and a discharge pipe. Through a nitrogen machine, nitrogen gas is injected into the screening cylinder, a discharge cylinder and a discharge pipe to remove air and ensure that the entire process is carried out in an oxygen-free environment.
It effectively prevents the pre-reducing catalyst from undergoing oxidation reaction during screening and unloading, ensures that the properties of the catalyst remain unchanged, and realizes the simultaneous progress of screening and unloading, improving working efficiency.
Smart Images
Figure CN222872688U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field related to catalyst treatment, in particular to an oxygen-free screening and unloading device for pre-reduction type catalysts. Background Art
[0002] A catalyst is a substance that can accelerate the rate of a chemical reaction, while a pre-reduced catalyst is a substance that can reduce the catalyst before the reaction. Pre-reduced catalysts play an important role in many chemical reactions. They can provide electrons to the catalyst, thereby promoting the reaction. As for the pre-reduced catalysts themselves, most of them are powder materials. In actual operations, this type of catalyst needs to maintain a certain particle fineness in order to maintain a full reaction effect. This requires screening and unloading for storage, but there are still the following disadvantages in the actual screening and unloading process:
[0003] 1. Due to the inherent characteristics of the pre-reduction catalyst, some pre-reduction catalysts are very easy to undergo oxidation reactions, so they cannot be overly exposed to the air. Therefore, there are certain requirements in the entire screening, unloading and packaging process, and they cannot be exposed to too much oxygen. However, as far as the current screening equipment is concerned, there is still a lack of such an oxygen-free screening environment, and the pre-reduction catalyst cannot be effectively processed;
[0004] 2. Secondly, the input material before screening and the discharge material during unloading will inevitably come into contact with part of the external environment, which will also lead to the occurrence of oxidation reactions. Therefore, the pre- and post-screening and unloading processes cannot be carried out at the same time and need to work independently. Utility Model Content
[0005] The purpose of the utility model is to provide an anaerobic screening and unloading device for pre-reduction catalysts. By arranging a nitrogen machine, a screening cylinder, a unloading cylinder, a sealing cover, a feed pipe, and a discharge pipe, the problem of lack of an anaerobic screening and unloading environment for the pre-reduction catalyst and the problem that screening and unloading of the pre-reduction catalyst cannot be performed simultaneously is solved.
[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:
[0007] The utility model is an anaerobic screening and unloading device for pre-reduction type catalyst, comprising a frame assembly, a nitrogen generator, a screening cylinder, a sealing cover and a unloading cylinder, wherein the frame assembly comprises an upper base plate and a lower base plate which are distributed up and down, wherein the nitrogen generator is fixed through the upper base plate and the lower base plate, wherein the screening cylinder is also fixed through the upper base plate, wherein the unloading cylinder is also fixed through the lower base plate, and the sealing cover is fixed on the upper end cover of the screening cylinder;
[0008] A rotating motor is fixed at the center of the upper end of the cover, a screen frame is arranged in the inner cavity of the screening cylinder, and a ring plate is fixed at the upper edge of the screen frame, and vertical poles distributed in a circular array are fixed to the upper end of the ring plate, and the upper ends of all the vertical poles penetrate the upper end of the cover and extend out, and a support plate is fixed to the upper ends of the two vertical poles, and a vibration motor is fixed to the upper surface of the support plate;
[0009] A feed pipe is fixed between the opposite surfaces of the screening cylinder and the discharge cylinder, a discharge pipe is fixed through the lower end of the discharge cylinder, and material valves are fixed on both the feed pipe and the discharge pipe.
[0010] Furthermore, branch pipe 1, branch pipe 2 and branch pipe 3 are fixed to the outlet end of the nitrogen machine, and control valves are fixed on branch pipe 1, branch pipe 2 and branch pipe 3. The ends of branch pipe 1, branch pipe 2 and branch pipe 3 away from the nitrogen machine are respectively fixed to the side walls of the screening cylinder, the unloading cylinder and the discharge pipe.
[0011] Furthermore, through grooves are formed at the centers of the upper and lower base plates, and branch pipe 2 passes through the through groove in the upper base plate, and branch pipe 3 passes through the through grooves in the upper and lower base plates. Angle steels are fixed between the corners of the opposite surfaces of the upper and lower base plates, and legs are fixed at the four corners of the bottom surface of the lower base plate.
[0012] Furthermore, a screen is fixed in the screen frame, the output shaft of the rotating motor passes through the cover downward and is fixed with a rotating shaft, and the outer periphery of the lower part of the rotating shaft is fixed with arc-shaped scraping strips distributed in a circular array, the bottom surface of the scraping strips contacts the screen, and the height of the scraping strips is lower than the height of the ring plate.
[0013] Furthermore, the screen frame, the ring plate and the scraper strips are all located in the inner cavity of the screening drum, and the diameters of the ring plate and the screen frame are smaller than the inner diameter of the screening drum, and the rotating motor is located between the two vibration motors.
[0014] Furthermore, an air pipe 1 is fixedly passed through the side wall of the screening cylinder, an air pipe 2 is fixedly passed through the side wall of the discharging cylinder, and an air pipe 3 is fixedly passed through the side wall of the discharging pipe. One-way air valves are provided on air pipes 1, 2 and 3.
[0015] Furthermore, the air pipe three on the discharge pipe is lower than the height of the material valve on the discharge pipe.
[0016] The utility model has the following beneficial effects:
[0017] 1. The utility model solves the problem of lack of an anaerobic screening and unloading environment for pre-reduction catalysts by arranging a nitrogen machine, a screening cylinder, a discharge cylinder and a sealing cover; nitrogen is introduced into the screening cylinder, the discharge cylinder and the discharge pipe through the operation of the nitrogen machine to exclude the air contained therein; before screening, the upper end of the screening cylinder is sealed with a sealing cover, and a feed pipe (not shown in the figure) is provided on the sealing cover, nitrogen is injected into the screening cylinder to exclude the air, and then the catalyst is added for screening, and then the air in the discharge cylinder is exhausted in advance, and the screened catalyst is introduced into the discharge cylinder, and then the material valve on the feed pipe is closed, and then the above-mentioned screening operation can be performed again, and the discharge cylinder is used as a transit unloading, and there is also an anaerobic environment, when unloading is required, the discharge pipe is connected to the external container and sealed, and then the air in the discharge pipe and the container is excluded, and nitrogen is injected, and finally the discharge pipe feeding valve is opened to allow the screened catalyst to enter the packaging container, and the whole state is carried out in an anaerobic environment, which effectively ensures that the properties of the pre-reduction catalyst are not changed by oxidation.
[0018] 2. The utility model solves the problem that the screening and unloading of the pre-reduction type catalyst cannot be carried out at the same time and the external air is easily introduced by arranging a screening cylinder, a discharge cylinder, a feed pipe and a discharge pipe; the catalyst is added into the screening cylinder for screening, at which time the material valve on the feed pipe is closed and not communicated with the discharge cylinder. After screening, the material valve on the feed pipe is opened again, and the screened catalyst is introduced into the discharge cylinder, and then the material valve on the feed pipe is closed. At this time, the screening operation can be carried out again. At the same time, the material valve on the discharge pipe is also in a closed state to ensure an oxygen-free environment in the discharge cylinder. When unloading is required, the discharge pipe is connected to an external container and sealed, nitrogen is injected into the discharge pipe, and excess air is discharged from the air pipe three, and then the material valve on the discharge pipe is opened to allow the catalyst to enter the packaging container, and the unloading and packaging are completed. The screening and unloading do not interfere with each other, and no external air enters, thereby ensuring that the properties of the catalyst remain unchanged. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.
[0020] Figure 1 A perspective view of an oxygen-free screening and unloading device for a pre-reduced catalyst;
[0021] Figure 2 The structure diagram of the frame assembly after sectioning;
[0022] Figure 3 This is the structural diagram of the nitrogen machine;
[0023] Figure 4 It is a cross-sectional connection diagram of the sealing cover, screening cylinder and discharge cylinder;
[0024] Figure 5 It is the working status diagram of the screen frame, vibration motor and rotating motor;
[0025] Figure 6 This is a bottom view of the cover.
[0026] Reference numerals:
[0027] 1. Frame assembly; 101. Upper base plate; 102. Angle steel; 103. Lower base plate; 104. Leg; 105. Through slot; 2. Nitrogen generator; 201. Branch pipe 1; 202. Branch pipe 2; 203. Branch pipe 3; 204. Control valve; 3. Screening cylinder; 301. Air pipe 1; 4. Cover; 401. Vibrating motor; 402. Rotating motor; 403. Screen frame; 4031. Screen; 404. Ring plate; 405. Vertical pole; 4051. Support plate; 406. Rotating shaft; 4061. Scraper; 5. Discharging cylinder; 501. Inlet pipe; 502. Outlet pipe; 503. Material valve; 504. Air pipe 2; 505. Air pipe 3. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0029] See also Figure 1-6 As shown, the utility model is an oxygen-free screening and unloading device for pre-reduction catalyst, comprising a frame assembly 1, a nitrogen generator 2, a screening cylinder 3, a sealing cover 4 and a discharging cylinder 5. The frame assembly 1 comprises an upper base plate 101 and a lower base plate 103 which are distributed up and down. The nitrogen generator 2 is fixed through the upper base plate 101 and the lower base plate 103. The screening cylinder 3 is also fixed through the upper base plate 101. The discharging cylinder 5 is also fixed through the lower base plate 103. The upper end cover of the screening cylinder 3 is provided with a sealing cover 4;
[0030] The nitrogen generator 2 provides nitrogen for injecting nitrogen into the screening cylinder 3, the discharge cylinder 5 and the discharge pipe 502 to remove air. The screening cylinder 3 is used for screening the pre-reduced catalyst. The discharge cylinder 5 is used as a transfer to temporarily store the pre-reduced catalyst after screening, and cooperates with the discharge pipe 502 to perform oxygen-free discharge. The cover 4 seals the upper end of the screening cylinder 3. The cover 4 has a feed pipe and other feeding components (not shown in the figure) for adding the pre-reduced catalyst to be screened. The feed pipe is in a closed state during screening;
[0031] A rotating motor 402 is fixed at the center of the upper end of the cover 4, a screen frame 403 is arranged in the inner cavity of the screening cylinder 3, and a ring plate 404 is fixed at the upper edge of the screen frame 403, and vertical rods 405 distributed in a circular array are fixed on the upper end of the ring plate 404, and the upper ends of all the vertical rods 405 penetrate the upper end of the cover 4 and extend out, and a support plate 4051 is fixed to the upper ends of the two vertical rods 405, and a vibration motor 401 is fixed to the upper end surface of the support plate 4051;
[0032] The rotating motor 402 is used to assist in screening. A screen 4031 is arranged in the screen frame 403 for screening the pre-reduced catalyst. The screen frame 403 is provided with a ring plate 404 to block the pre-reduced catalyst that cannot pass through the screen 4031 from falling during screening. The ring plate 404 is fixed to the cover 4 through a vertical rod 405, and a vibration motor 401 is installed on the top of the vertical rod 405 through a support plate 4051. When the vibration motor 401 is working, it transmits vibration to the vertical rod 405 and the screen frame 403 to help perform vibration screening.
[0033] An inlet pipe 501 is fixed between the opposite surfaces of the screening cylinder 3 and the discharge cylinder 5, and a discharge pipe 502 is fixed through the lower end of the discharge cylinder 5, and a material valve 503 is fixed on both the inlet pipe 501 and the discharge pipe 502;
[0034] The feed pipe 501 is used to connect the screening cylinder 3 and the discharge cylinder 5. By opening the feed valve 503 on the feed pipe 501, the pre-reduced catalyst after screening in the screening cylinder 3 can be introduced into the discharge cylinder 5. When unloading is required, the feed valve 503 on the discharge pipe 502 is opened to export the pre-reduced catalyst in the discharge cylinder 5 for packaging.
[0035] The outlet end of the nitrogen generator 2 is fixed with a branch pipe 1 201, a branch pipe 202 and a branch pipe 3 203, and a control valve 204 is fixed on each of the branch pipes 1 201, 202 and 203. The ends of the branch pipes 1 201, 202 and 203 away from the nitrogen generator 2 are respectively connected and fixed to the side walls of the screening cylinder 3, the discharge cylinder 5 and the discharge pipe 502;
[0036] The nitrogen generator 2 fills nitrogen into the screening cylinder 3, the discharge cylinder 5 and the discharge pipe 502 through the branch pipe 1 201, the branch pipe 2 202 and the branch pipe 3 203 respectively. The branch pipe 1 201, the branch pipe 202 and the branch pipe 3 203 are all controlled by the control valve 204 to control the on-off, so as to inflate different parts and remove the air in the corresponding space.
[0037] A through slot 105 is formed through the center of the upper base plate 101 and the lower base plate 103, and the second branch pipe 202 passes through the through slot 105 in the upper base plate 101, and the third branch pipe 203 passes through the through slots 105 in the upper base plate 101 and the lower base plate 103. An angle steel 102 is fixed between the corners of the opposite surfaces of the upper base plate 101 and the lower base plate 103, and legs 104 are fixed at the four corners of the bottom surface of the lower base plate 103;
[0038] The through slot 105 is designed to allow the branch pipe 202 and the branch pipe 3 203 to pass through. The upper base plate 101 and the lower base plate 103 are fixed by angle steel 102, and the bottom of the lower base plate 103 is supported on the ground by the supporting legs 104.
[0039] A screen 4031 is fixed in the screen frame 403, and a rotating shaft 406 is fixed to the output shaft of the rotating motor 402 downwardly through the cover 4, and arc-shaped scraping strips 4061 distributed in a circular array are fixed to the outer periphery of the lower part of the rotating shaft 406, and the bottom surface of the scraping strips 4061 contacts the screen 4031, and the height of the scraping strips 4061 is lower than the height of the ring plate 404;
[0040] The rotating motor 402 works to drive the rotating shaft 406 to rotate, so that the scraper bar 4061 rotates, and the pre-reduced catalyst that falls on the screen 4031 is scraped, so as to facilitate more complete contact with the screen 4031 for screening. In combination with the vibration screening of the vibration motor 401, more efficient screening processing is achieved.
[0041] The screen frame 403 , the ring plate 404 , and the scraper strip 4061 are all located in the inner cavity of the screening drum 3 , and the diameters of the ring plate 404 and the screen frame 403 are smaller than the inner diameter of the screening drum 3 . The rotating motor 402 is located between the two vibration motors 401 .
[0042] An air pipe 1 301 is fixedly passed through the side wall of the screening cylinder 3, an air pipe 2 504 is fixedly passed through the side wall of the discharge cylinder 5, and an air pipe 3 505 is fixedly passed through the side wall of the discharge pipe 502. One-way air valves are arranged on the air pipe 1 301, the air pipe 2 504 and the air pipe 3 505;
[0043] When the nitrogen machine 2 fills nitrogen into the screening cylinder 3, the discharge cylinder 5 and the discharge pipe 502 through the branch pipe 1 201, the branch pipe 2 202 and the branch pipe 3 203 respectively, the air in the corresponding space is discharged outward from the air pipe 1 301, the air pipe 2 504 and the air pipe 3 505 until the screening cylinder 3, the discharge cylinder 5 and the discharge pipe 502 are filled with nitrogen, thereby achieving an oxygen-free environment.
[0044] The air pipe three 505 on the discharge pipe 502 is lower than the height of the material valve 503 on the discharge pipe 502 .
[0045] The specific working principle of the utility model is as follows: first, the discharge pipe 502 is connected to the external container and then sealed, and the nitrogen generator 2 is used to fill nitrogen into the screening cylinder 3, the discharge cylinder 5 and the discharge pipe 502 through the branch pipe 1 201, the branch pipe 2 202 and the branch pipe 3 203 respectively, and the branch pipe 1 201, the branch pipe 2 202 and the branch pipe 3 203 are all controlled by the control valve 204 to control the on-off, and the air in the corresponding space is discharged from the air pipe 1 301, the air pipe 2 504 and the air pipe 3 505 until the screening cylinder 3, the discharge cylinder 5 and the discharge pipe 502 are filled with nitrogen to achieve an oxygen-free environment. At this time, the material valves 503 on the feed pipe and the discharge pipe 502 are all in a closed state;
[0046] When screening, the catalyst is added into the screening cylinder 3 for screening. A screen 4031 is arranged in the screen frame 403 for screening the pre-reduced catalyst. The screen frame 403 cooperates with the ring plate 404 to block to prevent the pre-reduced catalyst that cannot pass through the screen 4031 from falling during screening. The rotary motor 402 works to drive the rotating shaft 406 to rotate, so that the scraper 4061 rotates to scrape the pre-reduced catalyst that falls on the screen 4031, so as to facilitate more sufficient contact with the screen 4031 for screening. At the same time, the vibration motor 401 works to transmit vibration to the vertical rod 405 and the screen frame 403 to help the vibration screening process. At this time, the feeding The material valve 503 on the tube 501 is closed and not connected with the discharge barrel 5. After screening, the material valve 503 on the feed pipe 501 is opened again to introduce the screened catalyst into the discharge barrel 5, and then the material valve 503 on the feed pipe 501 is closed. At this time, the screening operation can be carried out again. At the same time, the material valve 503 on the discharge pipe 502 is also closed to ensure the oxygen-free environment in the discharge barrel 5. When unloading is required, the discharge pipe 502 is connected to the external container and sealed, nitrogen is injected into the discharge pipe 502, and excess air is discharged from the air pipe three 505, and then the material valve 503 on the discharge pipe 502 is opened to allow the catalyst to enter the packaging container to complete the unloading and packaging.
[0047] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.
Claims
1. An oxygen-free screening and unloading device for pre-reduction catalysts, comprising a frame assembly (1), a nitrogen generator (2), a screening cylinder (3), a sealing cover (4) and a unloading cylinder (5), characterized in that: The frame assembly (1) comprises an upper base plate (101) and a lower base plate (103) which are arranged in an upper and lower position. A nitrogen generator (2) is fixed through the upper base plate (101) and the lower base plate (103). A screening cylinder (3) is also fixed through the upper base plate (101). A discharge cylinder (5) is also fixed through the lower base plate (103). A sealing cover (4) is fixed on the upper end cover of the screening cylinder (3). A rotating motor (402) is fixed at the center of the upper end of the cover (4), a screen frame (403) is arranged in the inner cavity of the screening cylinder (3), and a ring plate (404) is fixed at the upper edge of the screen frame (403), and vertical rods (405) distributed in a circular array are fixed to the upper end of the ring plate (404), and the upper ends of all the vertical rods (405) penetrate the upper end of the cover (4) and extend out, and a support plate (4051) is fixed to the upper ends of the two vertical rods (405), and a vibration motor (401) is fixed to the upper end surface of the support plate (4051); A feed pipe (501) is fixed between the opposite surfaces of the screening cylinder (3) and the discharge cylinder (5), a discharge pipe (502) is fixed through the lower end of the discharge cylinder (5), and material valves (503) are fixed on both the feed pipe (501) and the discharge pipe (502).
2. The anaerobic screening and unloading device for pre-reduction catalyst according to claim 1, characterized in that: A branch pipe 1 (201), a branch pipe 2 (202) and a branch pipe 3 (203) are fixed to the gas outlet end of the nitrogen generator (2); control valves (204) are fixed to the branch pipe 1 (201), the branch pipe 2 (202) and the branch pipe 3 (203); and ends of the branch pipe 1 (201), the branch pipe 2 (202) and the branch pipe 3 (203) away from the nitrogen generator (2) are respectively connected and fixed to the side walls of the screening cylinder (3), the discharge cylinder (5) and the discharge pipe (502).
3. The anaerobic screening and unloading device for pre-reduction catalyst according to claim 2, characterized in that: A through slot (105) is provided through the center of the upper base plate (101) and the lower base plate (103), and the second branch pipe (202) passes through the through slot (105) in the upper base plate (101), and the third branch pipe (203) passes through the through slots (105) in the upper base plate (101) and the lower base plate (103). Angle steel (102) is fixed between the corners of the opposite surfaces of the upper base plate (101) and the lower base plate (103), and legs (104) are fixed at the four corners of the bottom surface of the lower base plate (103).
4. The anaerobic screening and unloading device for pre-reduction catalyst according to claim 1, characterized in that: A screen (4031) is fixed in the screen frame (403), and the output shaft of the rotating motor (402) passes downward through the cover (4) and is fixed with a rotating shaft (406), and arc-shaped scraping strips (4061) distributed in a ring array are fixed to the outer periphery of the lower part of the rotating shaft (406), the bottom surface of the scraping strips (4061) contacts the screen (4031), and the height of the scraping strips (4061) is lower than the height of the ring plate (404).
5. The anaerobic screening and unloading device for pre-reduction catalyst according to claim 4, characterized in that: The screen frame (403), the ring plate (404), and the scraper strip (4061) are all located in the inner cavity of the screening drum (3), and the diameters of the ring plate (404) and the screen frame (403) are smaller than the inner diameter of the screening drum (3). The rotating motor (402) is located between the two vibration motors (401).
6. The anaerobic screening and unloading device for pre-reduction catalyst according to claim 1, characterized in that: An air pipe 1 (301) is fixedly passed through the side wall of the screening cylinder (3), an air pipe 2 (504) is fixedly passed through the side wall of the discharge cylinder (5), and an air pipe 3 (505) is fixedly passed through the side wall of the discharge pipe (502). One-way air valves are provided on the air pipe 1 (301), the air pipe 2 (504) and the air pipe 3 (505).
7. The anaerobic screening and unloading device for pre-reduction catalyst according to claim 6, characterized in that: The air pipe three (505) on the discharge pipe (502) is lower than the height of the material valve (503) on the discharge pipe (502).