Sulfur trioxide absorption column for producing electronic grade sulfuric acid

Abstract

The utility model relates to the field of electronic grade sulfuric acid production, in particular to a sulfur trioxide absorption column for electronic grade sulfuric acid production, which comprises a sulfur trioxide absorption column body, a treatment frame is arranged on the sulfur trioxide absorption column body in a matching manner, and the upper inner wall of the treatment frame is fixedly connected with an inclined reverse scraping fork strip. The left inner wall and the right inner wall of the treatment frame are fixedly connected with electric rotating shaft parts, the output ends of the two electric rotating shaft parts are fixedly connected with electric push rod parts, the output ends of the two electric push rod parts are fixedly connected with an annular moving outer ring sleeve, the inner end of the annular moving outer ring sleeve is provided with a self-rotating electric inner shaft, and the outer end of the self-rotating electric inner shaft is fixedly connected with a silica gel contact scraping ring. According to the sulfur trioxide absorption column for electronic-grade sulfuric acid production, when the annular moving outer ring sleeve is reset into the sulfur trioxide absorption column body, stains attached to the silica gel contact scraping ring can be reversely scraped by the inclined reverse scraping fork strips, and the cleaning capacity of the silica gel contact scraping ring on the sulfur trioxide absorption column body next time is guaranteed.

Description

Technical Field

[0001] The utility model relates to a sulfur trioxide absorption column for electronic grade sulfuric acid production, in particular to a sulfur trioxide absorption column for electronic grade sulfuric acid production applied in the field of electronic grade sulfuric acid production. Background Art

[0002] Sulfur trioxide used in the production of electronic grade sulfuric acid is a colorless, easily sublimated solid with three physical states. It dissolves in water and reacts with water to form sulfuric acid and releases a large amount of heat, so it is also called sulfuric anhydride. It dissolves in concentrated sulfuric acid to form fuming sulfuric acid. It is an acidic oxide and can react with alkaline oxides to form salts. Sulfur trioxide is a strong oxidant and can only oxidize sulfur, phosphorus, iron, zinc, bromide, iodide, etc. at high temperatures. SO3 is solid under standard conditions and liquid at normal temperature and pressure. After each work is completed, the sulfur trioxide absorption column will be attached with residues that are difficult to clean.

[0003] The specification of Chinese patent CN211971772U discloses a sulfur trioxide absorption column for preparing electronic grade sulfuric acid, comprising a fixed bottom plate, on the top of which an absorption column body is fixedly mounted, and a cleaning mechanism is slidably connected to the absorption column body, which can clean the reaction residue on the surface of the absorption column body after use.

[0004] However, the above method cannot backwash the cleaning mechanism, resulting in poor subsequent treatment effect on the sulfur trioxide absorption column for electronic grade sulfuric acid production. Therefore, it is necessary to design a sulfur trioxide absorption column for electronic grade sulfuric acid production with a backwash cleaning structure to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the utility model is that the existing method cannot backwash the cleaning mechanism, resulting in poor subsequent treatment effect on the sulfur trioxide absorption column for electronic grade sulfuric acid production.

[0006] To solve the above problems, the utility model provides a sulfur trioxide absorption column for the production of electronic-grade sulfuric acid, comprising a sulfur trioxide absorption column body, a processing frame being arranged on the sulfur trioxide absorption column body, an upper inner wall of the processing frame being fixedly connected with an oblique reverse scraping fork strip, left and right inner walls of the processing frame being fixedly connected with an electric rotating shaft component, output ends of the two electric rotating shaft components being fixedly connected with electric push rod components, output ends of the two electric push rod components being fixedly connected with an annular outer ring sleeve, an inner end of the annular outer ring sleeve being provided with a self-rotating electric inner shaft, and an outer end of the self-rotating electric inner shaft being fixedly connected with a silicone contact scraper ring.

[0007] In the above-mentioned sulfur trioxide absorption column for electronic grade sulfuric acid production, when the annular outer ring of this scheme is reset into the sulfur trioxide absorption column body, the annular outer ring can be turned over as a whole by using the electric rotating shaft, and the oblique reverse scraping fork strips can be used to reversely scrape off the stains just attached to the silicone contact scraper ring, which is beneficial to ensure the cleaning ability of the silicone contact scraper ring for the next time for the sulfur trioxide absorption column body.

[0008] As a further improvement of the present application, the silica gel contact scraper ring cooperates with the outer side wall of the sulfur trioxide absorption column body.

[0009] As a further improvement of the present application, the silicone contact scraper ring is in contact with the oblique reverse scraper fork strip.

[0010] As a further improvement of the present application, a side slot is provided on the right inner wall of the processing frame, and a micro motor is fixedly connected to the lower inner wall of the side slot.

[0011] As another improvement of the present application, the output end of the micro motor is fixedly connected to a switchable ash storage frame, and the switchable ash storage frame extends outside the side slot.

[0012] As another improved supplement of the present application, the transferable ash storage frame is located directly below the oblique reverse scraping fork strip and cooperates with the silicone contact scraping ring.

[0013] In summary, when the annular outer ring sleeve of the present scheme is reset into the body of the sulfur trioxide absorption column, the electric rotating shaft can be used to flip the annular outer ring sleeve as a whole, and the friction between the oblique reverse scraping fork strip and the silicone contact scraping ring can be used to reversely scrape off the stains just attached to the silicone contact scraping ring, which is beneficial to ensure the cleaning ability of the silicone contact scraping ring for the sulfur trioxide absorption column body next time. At the same time, when the oblique reverse scraping fork strip scrapes off the stains on the silicone contact scraping ring, the micro motor drives the transferable ash storage frame to flip down to the bottom of the oblique reverse scraping fork strip, so that the stains dropped by the reverse scraping can be received by the transferable ash storage frame, which is convenient for subsequent unified cleaning and transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of the sulfur trioxide absorption column body according to the first embodiment of the present application;

[0015] Figure 2 This is a front view of a side groove section in a processing frame of the first embodiment of the present application;

[0016] Figure 3 For the second implementation of this application Figure 2 A partially cutaway enlarged view of the groove on the middle side.

[0017] Description of the numbers in the figure:

[0018] 1. Sulfur trioxide absorption column body; 2. Processing frame; 3. Electric rotating shaft; 4. Electric push rod; 5. Self-rotating electric inner shaft; 6. Annular outer ring; 7. Silicone contact scraper ring; 8. Oblique reverse scraper fork strip; 9. Micro motor; 10. Side slot; 11. Transferable ash storage frame. DETAILED DESCRIPTION

[0019] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0020] The first implementation method:

[0021] Figure 1-2 It is shown that it includes a sulfur trioxide absorption column body 1, on which a processing frame 2 is arranged, the upper inner wall of the processing frame 2 is fixedly connected with an oblique reverse scraping fork strip 8, the left and right inner walls of the processing frame 2 are fixedly connected with an electric rotating shaft 3, the output ends of the two electric rotating shafts 3 are fixedly connected with electric push rods 4, the output ends of the two electric push rods 4 are fixedly connected with an annular outer ring 6, the inner end of the annular outer ring 6 is installed with a self-rotating electric inner shaft 5, and the outer end of the self-rotating electric inner shaft 5 is fixedly connected with a silicone contact scraper ring 7.

[0022] Figure 1-2 It is shown that the silica gel contact scraper ring 7 is matched with the outer side wall of the sulfur trioxide absorption column body 1, the silica gel contact scraper ring 7 is in contact with the oblique reverse scraper fork strip 8, and the right inner wall of the processing frame 2 is provided with a side groove 10.

[0023] Figure 1-2 It is shown that the present scheme can clean and scrape the outer wall of the sulfur trioxide absorption column body 1 by setting a processing frame 2 on the sulfur trioxide absorption column body 1. Specifically, the electric push rod 4 drives the annular outer ring 6 to move down to the outside of the sulfur trioxide absorption column body 1, and uses the self-rotating electric inner shaft 5 to drive the electric push rod 4 to rub in an outer ring shape on the sulfur trioxide absorption column body 1, so that the remaining substances on the sulfur trioxide absorption column body 1 can be quickly and efficiently removed. Then, when the annular outer ring 6 is reset to the sulfur trioxide absorption column body 1, the electric rotating shaft 3 can be used to flip the annular outer ring 6 as a whole. Since the silicone contact scraper 7 is made of flexible material, it can be stuck in the fork of the oblique reverse scraping fork strip 8 during the flipping process. At this time, the self-rotating electric inner shaft 5 is used to drive the silicone contact scraper 7 to rotate, and the friction between the oblique reverse scraping fork strip 8 and the silicone contact scraper 7 can be used to reversely scrape off the stains just attached to the silicone contact scraper 7, which is beneficial to ensure the cleaning ability of the silicone contact scraper 7 for the sulfur trioxide absorption column body 1 next time.

[0024] The second implementation method:

[0025] Figure 3It is shown that a micro motor 9 is fixedly connected to the lower inner wall of the side groove 10, and an output end of the micro motor 9 is fixedly connected to a transferable ash storage frame 11. The transferable ash storage frame 11 extends outside the side groove 10. The transferable ash storage frame 11 is located directly below the oblique reverse scraping fork strip 8 and cooperates with the silicone contact scraping ring 7. At the same time, when the oblique reverse scraping fork strip 8 scrapes the stains on the silicone contact scraping ring 7, the micro motor 9 drives the transferable ash storage frame 11 to flip down to directly below the oblique reverse scraping fork strip 8, so that the stains dropped by the reverse scraping can be received by the transferable ash storage frame 11, which is convenient for subsequent unified cleaning and transfer.

[0026] In view of current practical needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A sulfur trioxide absorption column for the production of electronic grade sulfuric acid, characterized in that: The invention comprises a sulfur trioxide absorption column body (1), the sulfur trioxide absorption column body (1) is matched with a processing frame (2), the upper inner wall of the processing frame (2) is fixedly connected with an oblique reverse scraping fork strip (8), the left and right inner walls of the processing frame (2) are fixedly connected with an electric rotating shaft (3), the output ends of the two electric rotating shafts (3) are fixedly connected with electric push rods (4), the output ends of the two electric push rods (4) are fixedly connected with an annular outer ring sleeve (6), the inner end of the annular outer ring sleeve (6) is installed with a self-rotating electric inner shaft (5), and the outer end of the self-rotating electric inner shaft (5) is fixedly connected with a silicone contact scraper (7).

2. The sulfur trioxide absorption column for electronic grade sulfuric acid production according to claim 1, characterized in that: The silica gel contact scraper ring (7) cooperates with the outer side wall of the sulfur trioxide absorption column body (1).

3. The sulfur trioxide absorption column for electronic grade sulfuric acid production according to claim 1, characterized in that: The silica gel contact scraping ring (7) is in contact with the oblique reverse scraping fork strip (8).

4. The sulfur trioxide absorption column for electronic grade sulfuric acid production according to claim 1, characterized in that: A side slot (10) is provided on the right inner wall of the processing frame (2), and a micro motor (9) is fixedly connected to the lower inner wall of the side slot (10).

5. A sulfur trioxide absorption column for electronic grade sulfuric acid production according to claim 4, characterized in that: The output end of the micro motor (9) is fixedly connected to a switchable ash storage frame (11), and the switchable ash storage frame (11) extends outside the side slot (10).

6. The sulfur trioxide absorption column for producing electronic grade sulfuric acid according to claim 5, characterized in that: The switchable ash storage frame (11) is located directly below the oblique reverse scraping fork strip (8) and cooperates with the silicone contact scraping ring (7).

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