A clog-resistant distributor for naphtha desulfurization reactors

Abstract

This utility model discloses an anti-clogging distributor for a naphtha desulfurization reactor, belonging to the field of chemical equipment technology. It includes a main tank, a filtration mechanism, and a cleaning mechanism. The cleaning mechanism includes a handle, a connecting block, and a scraper. The scraper is slidably disposed within the filter tank of the filtration mechanism and contacts the bottom surface with filter holes. The connecting block slides into a groove on the inner wall of the main tank via a slider. The scraper can be driven to perform online cleaning of the filter holes by operating the handle. This utility model solves the problem of existing distributors being prone to clogging and requiring shutdown for cleaning, achieving online cleaning, effectively ensuring the long-term uniformity and stability of liquid distribution, and improving reaction efficiency. Furthermore, its filtration and cleaning components are quickly disassembled and assembled via mounting and disassembling bolts, significantly reducing maintenance difficulty and safety risks.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and in particular to a distributor for a naphtha desulfurization reactor that prevents clogging. Background Technology

[0002] In gas-liquid-solid three-phase reactions such as naphtha hydrodesulfurization, the liquid distributor at the top of the reactor is a key component to ensure reaction efficiency. It is usually designed with a large number of small liquid outlet holes to achieve uniform liquid spraying.

[0003] However, naphtha, as a raw material, inevitably contains some solid particles, coking precursors, or equipment corrosion products and other impurities. During long-term operation, these impurities are very likely to accumulate at the tiny liquid outlet holes and cause blockage, which in turn severely damages the uniformity of liquid distribution, forming channels and dry zones on the catalyst bed. This not only significantly reduces the efficiency of the desulfurization reaction and shortens the service life of the catalyst, but may even cause safety hazards such as local overheating.

[0004] For this kind of blockage problem, the existing methods usually only involve stopping work, depressurizing, cooling down, and then opening the manhole for manual cleaning or replacement. This method is not only complicated, time-consuming, and labor-intensive, which seriously affects the production continuity of the equipment, but also increases maintenance costs and safety risks.

[0005] To address this issue, a clogging-resistant naphtha desulfurization reactor distributor is proposed. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a clogging-resistant naphtha desulfurization reactor distributor, which aims to improve the existing technology where the liquid outlet of the naphtha desulfurization reactor distributor is easily clogged by impurities during use, and cleaning and maintenance require shutdown and disassembly, which is a complicated process and seriously affects the continuity of production.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a distributor for a naphtha desulfurization reactor that prevents clogging, comprising a main tank, multiple sub-tanks located at the bottom of the main tank, a filtration mechanism and a cleaning mechanism located inside the main tank, wherein the cleaning mechanism comprises a handle, a scraper and a connecting block, the connecting block being connected between the handle and the scraper, the scraper being slidably disposed inside the filter tank of the filtration mechanism and in contact with the bottom surface having the filter holes, and a sliding groove being formed on the inner wall of the main tank, the connecting block of the cleaning mechanism being connected to a slider, the slider being combined by slidingly connecting in the sliding groove.

[0008] Preferably, the connecting block of the cleaning mechanism is detachably connected to the slider via mounting and dismounting bolts.

[0009] Preferably, the filtration mechanism further includes a limiting frame, which is integrally formed on the inner wall of the main groove and located below the filter groove of the filtration mechanism to support the filter groove.

[0010] Preferably, there are two sliders, which are slidably connected in the grooves opened on the inner walls of the two sides of the main groove.

[0011] Preferably, the bottom of the main tank is provided with a second liquid outlet hole, and the sub-tank is provided with a first liquid outlet hole.

[0012] Preferably, the anti-clogging naphtha desulfurization reactor distributor further includes a mounting block 1, which fixes the plurality of the sub-slots together.

[0013] Preferably, the anti-clogging naphtha desulfurization reactor distributor further includes a circular mounting plate and a second mounting block. The circular mounting plate is connected to the main tank, and the second mounting block cooperates with the circular mounting plate to fix the distributor.

[0014] More preferably, when the mounting bolt is in the locked state, it fixes the connecting block and the slider, while simultaneously engaging the filtering mechanism and the cleaning mechanism within the main groove.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this invention, by incorporating a scraper and a filter tank, when the filter holes become clogged due to impurities, the operator can externally drive the scraper to clean the filter without stopping the reactor, quickly restoring filtration capacity. This significantly reduces unplanned downtime caused by clogging, substantially improves the operating efficiency of the production unit, and lowers the high costs of downtime maintenance.

[0017] 2. In this invention, the combination of pre-filtration and active cleaning functions forms a dual anti-clogging guarantee, effectively avoiding problems such as uneven liquid distribution and flow deviation caused by clogging of the liquid outlet. This ensures continuous and efficient contact between gas and liquid in the reactor, which is beneficial to improving the efficiency of the desulfurization reaction and the quality of the final product. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a naphtha desulfurization reactor distributor for preventing clogging, as proposed in this utility model.

[0019] Figure 2 This is an exploded structural diagram of the main tank of a naphtha desulfurization reactor distributor for clogging prevention proposed in this utility model.

[0020] Figure 3This is a schematic diagram of the filter holes of a distributor for an anti-clogging naphtha desulfurization reactor proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the scraper structure of a distributor for an anti-clogging naphtha desulfurization reactor proposed in this utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the main tank of a naphtha desulfurization reactor distributor for the present invention.

[0023] Figure 6 for Figure 5 A magnified structural diagram of point A in the middle.

[0024] Legend:

[0025] 1. Main tank; 2. Sub-tank; 3. Circular mounting plate; 4. Filtration mechanism; 401. Filter tank; 402. Filter hole; 403. Limiting frame; 5. Cleaning mechanism; 501. Handle; 502. Scraper; 503. Connecting block; 504. Mounting bolt; 505. Sliding block; 6. Mounting block one; 7. Slide groove; 8. Mounting block two; 9. Liquid outlet one; 10. Liquid outlet two. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1-6 One embodiment of this utility model is an anti-clogging naphtha desulfurization reactor distributor, which aims to solve the technical problems of existing reactor distributors being prone to clogging and difficult to clean and maintain.

[0028] The anti-clogging naphtha desulfurization reactor distributor includes a cylindrical main tank 1 as the primary liquid containment and distribution structure. At the bottom of the main tank 1, multiple radially or arrayed sub-tanks 2 are fixedly connected by mounting block 1 6. The sub-tanks 2 are used for secondary dispersion of the liquid. In order to fix the entire distributor in the reactor cylinder wall, a circular mounting plate 3 is fixedly connected to the outer wall of the main tank 1. The circular mounting plate 3 is fixed to the reactor cylinder wall by mounting block 2 8.

[0029] The liquid distribution path is achieved through holes opened on different components. The bottom of the main tank 1 is provided with a liquid outlet hole 2 10, through which the liquid flows from the main tank 1 into each of the sub-tanks 2 below. Each sub-tank 2 is provided with multiple smaller liquid outlet holes 1 9, through which the liquid is finally sprayed evenly into the reactor.

[0030] To prevent clogging at the source, the main tank 1 is equipped with a removable filter and cleaning assembly. This assembly includes a filter mechanism 4 and a cleaning mechanism 5;

[0031] The filtration mechanism 4 is located below the cleaning mechanism 5. It is mainly composed of a movable filter tank 401. The overall shape of the filter tank 401 matches the inner cavity of the main tank 1 and is slidably placed inside the main tank 1. The bottom of the filter tank 401 is a flat plate structure. Multiple filter holes 402 are densely opened on the flat plate. The liquid must pass through these filter holes 402 before entering the main tank 1. In order to effectively support the filter tank 401 and prevent it from falling off during disassembly, an annular limiting frame 403 is integrally formed on the inner wall of the main tank 1 below the predetermined placement position of the filter tank 401. The bottom edge of the filter tank 401 is firmly attached to the limiting frame 403.

[0032] The cleaning mechanism 5 is used to clean the clogged filter holes 402 online by scraping. It is located directly above the filter mechanism 4. The core components of the cleaning mechanism 5 include a handle 501, a scraper 502, and a connecting block 503. The handle 501 serves as the operating end for external drive. The scraper 502 is a long strip-shaped structure with a length equivalent to the diameter of the filter tank 401. The connecting block 503 is a rigid component with one end fixedly connected to the handle 501 and the other end fixedly connected to the middle of the scraper 502, forming an integral T-shaped or I-shaped structure.

[0033] The scraper 502 is placed inside the filter tank 401, and its bottom edge forms a tight sliding contact with the bottom surface of the filter tank 401 where the filter holes 402 are opened. In order to guide the cleaning mechanism 5 to achieve smooth reciprocating linear motion, horizontal sliding grooves 7 are symmetrically opened on the inner walls of both sides of the main tank 1 at the height of the cleaning mechanism 5. Correspondingly, sliders 505 are fixedly connected to both ends of the connecting block 503. The two sliders 505 are respectively embedded in the sliding grooves 7 on both sides to form a sliding connection.

[0034] To enable quick disassembly and maintenance of the entire filtration and cleaning assembly, the connection between the connecting block 503 and the slider 505 is achieved through the mounting bolt 504. During normal operation, the mounting bolt 504 passes through the slider 505 and is screwed into the threaded hole on the connecting block 503, locking them together. At this time, the connecting block 503 also serves as a locking mechanism, pressing down on the upper edge of the filter mechanism 4 and being confined to the slide groove 7 by the slider 505, thereby securely locking the filter mechanism 4 and the cleaning mechanism 5 inside the main groove 1.

[0035] Working principle: During the liquid distribution process, the liquid to be treated enters from the top of the equipment and first falls into the filter tank 401 of the filter mechanism 4. Solid particles or impurities in the liquid are effectively intercepted by the filter holes 402 at the bottom of the filter tank 401, while the clean liquid passes through the filter holes 402 and enters the space below, that is, it is collected in the main tank 1. The liquid collected in the main tank 1 is dispersed into multiple sub-tanks 2 below through the liquid outlet hole 10 at the bottom. The liquid entering the sub-tanks 2 is then sprayed evenly to the catalyst bed or reaction area below the reactor through the liquid outlet hole 9 opened on each sub-tank 2, thereby completing the efficient and uniform liquid distribution.

[0036] When the equipment has been running for a period of time, the filter holes 402 become clogged due to the accumulation of impurities, and the liquid distribution becomes uneven. The online cleaning function is activated. The operator does not need to stop the reactor operation. He can directly operate the handle 501 of the cleaning mechanism 5. By pushing or pulling the handle 501, the handle 501 drives the connecting block 503 and the slider 505 fixed at both ends to move back and forth in a straight line along the sliding groove 7 opened on the inner wall of the main tank 1. During this movement, the scraper 502 fixedly connected to the connecting block 503 simultaneously scrapes the bottom surface of the filter tank 401. Its blade removes the impurities blocking the inlet of the filter hole 402, so that the filter hole is unobstructed. This achieves online and fast anti-clogging cleaning and ensures the long-term stable operation of the equipment.

[0037] When deep cleaning, maintenance, or replacement of the filter mechanism 4 or cleaning mechanism 5 is required, its convenient disassembly function is demonstrated. Maintenance personnel only need to loosen and remove the mounting bolts 504 that fix the connecting block 503 and the slider 505. After removing the mounting bolts 504, the connection between the connecting block 503 and the slider 505 is released. At this time, the handle 501 can be lifted upwards to easily remove the entire cleaning mechanism 5, consisting of the handle 501, scraper 502, and connecting block 503, from the main tank 1. Since the filter tank 401 is firmly supported by the limiting frame 403 below it, after the cleaning mechanism 5 is removed, the filter tank 401 remains safely in its original position, and maintenance personnel can then remove it separately from the main tank 1. The whole process is safe and simple. The installation process is carried out in the reverse order of disassembly.

Claims

1. A clog-resistant distributor for a naphtha desulfurization reactor, comprising: Main slot (1); Multiple sub-slots (2) are provided at the bottom of the main slot (1); The filter mechanism (4) is located inside the main tank (1) and includes a filter tank (401) with multiple filter holes (402). Its characteristic is that it further includes: A cleaning mechanism (5) includes a handle (501), a scraper (502) and a connecting block (503), wherein the connecting block (503) is connected between the handle (501) and the scraper (502); The scraper (502) is slidably disposed inside the filter tank (401) and in contact with the bottom surface with the filter hole (402); a sliding groove (7) is provided on the inner wall of the main tank (1), and a slider (505) is connected to the connecting block (503), and the slider (505) is slidably connected in the sliding groove (7).

2. A petrochemical naphtha desulfurization reactor distributor that prevents plugging as claimed in claim 1, wherein: The connecting block (503) is detachably connected to the slider (505) by a mounting bolt (504).

3. A petrochemical naphtha desulfurization reactor distributor that prevents plugging as defined in claim 1, wherein: The filtering mechanism (4) also includes a limiting frame (403), which is integrally formed on the inner wall of the main groove (1) and located below the filtering groove (401) to support the filtering groove (401).

4. A petrochemical naphtha desulfurization reactor distributor that prevents plugging as defined in claim 1, wherein: Two sliders (505) are provided and are slidably connected in the grooves (7) opened on the inner walls of both sides of the main groove (1).

5. A petrochemical naphtha desulfurization reactor distributor of claim 1, wherein: The bottom of the main tank (1) is provided with a second liquid outlet (10), and the sub-tank (2) is provided with a first liquid outlet (9).

6. A petrochemical naphtha desulfurization reactor distributor that prevents plugging as defined in claim 1, wherein: It further includes a mounting block (6) that fixes the plurality of the slots (2) together.

7. A petrochemical naphtha desulfurization reactor distributor of claim 1, wherein: It further includes a circular mounting plate (3) and a second mounting block (8), the circular mounting plate (3) being connected to the main groove (1), and the second mounting block (8) cooperating with the circular mounting plate (3) to fix the distributor.

8. A petrochemical naphtha desulfurization reactor distributor of claim 2, wherein: When the mounting bolt (504) is in the locked state, it fixes the connecting block (503) and the slider (505) at the same time, so that the connecting block (503) engages the filtering mechanism (4) and the cleaning mechanism (5) in the main groove (1).

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