Catalyst exhaust device for reactor failure

Abstract

This utility model relates to the field of phenol production technology, specifically to a device for discharging spent catalyst from a reactor. The device comprises a primary reactor, a secondary reactor, and a flushing liquid storage tank. The secondary reactor is connected to a filter via an inlet pipe, and the spent catalyst storage tank is connected to the filter. The primary reactor is connected to the inlet pipe via a pipe. The filter contains filter plates with rotating scrapers driven by a motor. The flushing liquid storage tank is connected to the filter via a flushing liquid discharge pump. This device, through the coordinated operation of the filter plates and rotating scrapers within the filter, can efficiently separate and promptly remove spent catalyst, greatly improving the emptying efficiency of spent catalyst, significantly shortening the emptying time, and reducing manpower input.

Description

Technical Field

[0001] This utility model relates to the field of phenol production technology, specifically to a device for discharging spent catalyst from a reactor. Background Technology

[0002] Phenol is an important organic chemical raw material with wide applications in various fields such as chemical engineering, pharmaceuticals, and pesticides. In the production of phenol, catalysts play a crucial role, accelerating the chemical reaction process and improving production efficiency and product quality. However, as the reaction proceeds, the catalyst gradually loses its activity and needs to be promptly removed from the reaction vessel and disposed of.

[0003] Existing equipment presents significant problems in handling spent catalysts. Emptying the reactor is difficult, and traditional emission methods are extremely inefficient, incurring substantial manpower and time costs. Furthermore, spent catalysts are difficult to completely remove from the reactor, and residual catalysts interfere with subsequent production, leading to fluctuations in product quality and increased production costs. In addition, some spent catalysts are corrosive and toxic; improper emission procedures can easily pollute the environment and seriously threaten the health of operators. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a device for discharging spent catalyst from a reactor. By working together with the filter plate and the rotating scraper in the filter, the spent catalyst can be efficiently separated and scraped off in a timely manner, which greatly improves the emptying efficiency of spent catalyst, significantly shortens the emptying time, and reduces manpower input.

[0005] This utility model is achieved using the following technical solution:

[0006] The aforementioned reactor waste catalyst discharge device includes a primary reactor, a secondary reactor, and a flushing liquid storage tank. The secondary reactor is connected to a filter via an inlet filter pipe, and a waste catalyst storage tank is connected to the filter. The primary reactor is connected to the inlet filter pipe via a pipe. The filter is equipped with a filter plate inside, and a rotating scraper driven by a drive motor is provided on the filter plate. The flushing liquid storage tank is connected to the filter via a flushing liquid discharge pump.

[0007] The secondary reactor is equipped with a spray plate inside, and a stirring paddle is located below the spray plate. The discharge port of the secondary reactor is connected to the circulating discharge pump through the inlet and outlet pipe, and the circulating discharge pump is connected to the spray plate through the circulation pipe.

[0008] The circulation pipe is connected to the filter via an inlet filter pipe, and the connection between the inlet filter pipe and the filter is located above the filter plate.

[0009] The flushing fluid discharge pump is connected to the spray plate through the spray pipe, and the flushing fluid discharge pump is connected to the filter through the backwash pipe. The connection between the backwash pipe and the filter is located below the filter plate.

[0010] The bottom of the filter is connected to the inlet and outlet pump pipe via a return pipe, and an observation port is provided on the return pipe.

[0011] The primary reactor is provided with a primary reactor insulation sleeve on the outside, and the filter is provided with a filter insulation sleeve on the outside. The primary reactor insulation sleeve is connected to the filter insulation sleeve through a connecting pipe.

[0012] The filter has a waste catalyst outlet on its vertical wall, located above the filter plate. The waste catalyst outlet is connected to a waste catalyst storage tank via a pipe. The primary and secondary reactors have the same structure and are connected to other devices in the same way, both equipped with external insulation sleeves. These insulation sleeves effectively reduce heat loss, maintain the stable temperature required for the reaction, ensure smooth reaction, improve production efficiency, and reduce energy consumption.

[0013] The filter contains a filter plate and a rotating scraper driven by a motor. Its bottom is connected to the reactor via a return pipe with an observation port. An insulation sleeve surrounds the filter. The filter plate intercepts ineffective catalyst, while the rotating scraper promptly removes catalyst from the filter plate to prevent clogging and ensure filtration efficiency. The observation port allows for real-time monitoring of the filtration process, and the insulation sleeve maintains a stable temperature inside the filter, guaranteeing optimal filtration performance.

[0014] The working principle of this utility model is as follows:

[0015] Add deionized water to the flushing solution storage tank until the liquid level reaches 80%-90% of its capacity. Turn on the flushing solution discharge pump to pump the flushing solution into the spray pan. Open the connecting pipe between the primary reactor and the filter's insulation jacket, maintaining the filter at 110-120℃ to ensure material flowability. Start the circulating discharge pump to allow the material containing the spent catalyst to flow into the filter through the inlet pipe at a flow rate of 3-5 cubic meters per hour, controlling the outlet pressure at 0.3-0.4 MPa. After the material enters the filter, drive the motor at 50-60 rpm to rotate the scraper, scraping away the spent catalyst trapped on the filter plate. Check the filtration effect every 30-40 minutes through the observation port. When the filtration efficiency decreases and the material circulation flow rate drops below 2 cubic meters per hour, start the flushing solution discharge pump to backwash the filter through the backwash pipe. After 3-4 cycles of filtration and rinsing, if the content of degraded catalyst in the material is less than 0.1% (mass fraction), open the waste catalyst outlet valve to discharge it, controlling the discharge rate at 1-2 cubic meters per hour.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) The filter plates and rotating scrapers in the filter of the device work together to efficiently separate and remove the spent catalyst in a timely manner, which greatly improves the emptying efficiency of the spent catalyst, significantly shortens the emptying time, and reduces manpower input. By thoroughly removing the spent catalyst in the reactor, its interference with subsequent production is avoided, ensuring the stable quality of phenol products and reducing production costs.

[0018] (2) The flushing fluid system flushes the equipment, effectively reducing the residue of corrosive and toxic substances inside the equipment, lowering the risk of environmental pollution, and strongly protecting the health and safety of operators. The insulation jacket of the primary reactor and the insulation jacket of the filter are connected to achieve effective heat transfer and utilization, playing a good role in heat preservation during the production process, reducing energy consumption, and improving energy utilization. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] In the diagram: 1. Primary reactor; 2. Secondary reactor; 3. Filter; 4. Waste catalyst storage tank; 5. Rinse solution storage tank; 6. Agitator; 7. Circulating discharge pump; 8. Spray plate; 9. Circulating pipeline; 10. Inlet to circulating discharge pump pipeline; 11. Return pipeline; 12. Observation port; 13. Filter plate; 14. Rotary scraper; 15. Drive motor; 16. Waste catalyst outlet; 17. Rinse solution discharge pump; 18. Filter insulation sleeve; 19. Backwash pipeline; 20. Spray pipeline; 21. Inlet to filter pipeline; 22. Primary reactor insulation sleeve; 23. Connecting pipeline. Detailed Implementation

[0021] To make the objectives and technical solutions of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] Example 1

[0023] like Figure 1As shown, the reactor waste catalyst discharge device includes a primary reactor 1, a secondary reactor 2, and a flushing liquid storage tank 5. The secondary reactor 2 is connected to a filter 3 via an inlet filter pipe 21. A waste catalyst storage tank 4 is connected to the filter 3. The primary reactor 1 is connected to the inlet filter pipe 21 via a pipe. The filter 3 has a filter plate 13 inside, and a rotating scraper 14 driven by a drive motor 15 is installed on the filter plate 13. The flushing liquid storage tank 5 is connected to the filter 3 via a flushing liquid discharge pump 17. The secondary reactor 2 has a spray plate 8 inside, and a stirring paddle 6 is installed below the spray plate 8. The discharge port of the secondary reactor 2 is connected to a circulating discharge pump 7 via an inlet circulation discharge pump pipe 10. The circulating discharge pump 7 is connected to the spray plate 8 via a circulation pipe 9. The circulation pipe 9 is connected to the filter 3 via the inlet filter pipe 21, and the connection between the inlet filter pipe 21 and the filter 3 is located above the filter plate 13. The flushing liquid discharge pump 17 is connected to the spray plate 8 via the spray pipe 20, and to the filter 3 via the backwash pipe 19. The connection between the backwash pipe 19 and the filter 3 is located below the filter plate 13. The bottom of the filter 3 is connected to the inlet and outlet pump pipe 10 via the return pipe 11, which has an observation port 12. A primary reactor insulation sleeve 22 is provided on the outside of the primary reactor 1, and a filter insulation sleeve 18 is provided on the outside of the filter 3. The primary reactor insulation sleeve 22 is connected to the filter insulation sleeve 18 via the connecting pipe 23. A waste catalyst discharge port 16 is provided on the vertical wall of the filter 3, located above the filter plate 13, and connected to the waste catalyst storage tank 4 via a pipe. The filter plate 13 in the filter 3 is responsible for intercepting the ineffective catalyst, and the rotating scraper 14 promptly scrapes off the catalyst on the filter plate 13 to prevent clogging and ensure filtration efficiency. The observation port facilitates real-time monitoring of the filtration status. The insulation sleeve maintains a stable temperature inside the filter, ensuring the filtration effect.

[0024] The above-mentioned reactor waste catalyst discharge device includes the following steps during operation:

[0025] (1) Inject deionized water into the flushing liquid storage tank 5 to make the liquid level reach 80%-90% of the volume. Turn on the flushing liquid discharge pump 17 to pump the flushing liquid into the spray plate 8. Open the connecting pipe between the insulation sleeve of the primary reactor 1 and the filter 3. Maintain the filter 3 at 110-120℃ to ensure the flowability of the material. Start the circulating discharge pump 7 to allow the material containing the depleted catalyst to flow into the filter 3 through the filter inlet pipe 21 at a flow rate of 3-5 cubic meters / hour. Control the outlet pressure at 0.3-0.4MPa. (2) After the material enters the filter 3, drive the motor 15 to drive the rotating scraper 14 at 50-60 rpm to scrape the depleted catalyst intercepted by the filter plate 13. Check the filtration effect through the observation port 12 every 30-40 minutes. (3) When the filtration efficiency decreases and the material circulation flow rate drops below 2 cubic meters / hour, start the flushing liquid discharge pump 17 to backwash the filter 3 through the backwash pipe 19. (4) After 3-4 cycles of filtration and rinsing, if the content of the depleted catalyst in the material is less than 0.1% (mass fraction), open valve 16 at the waste catalyst outlet to discharge it, and control the discharge rate at 1-2 cubic meters per hour.

Claims

1. A device for discharging spent catalyst from a reactor, characterized in that, It includes a primary reactor (1), a secondary reactor (2), and a flushing liquid storage tank (5). The secondary reactor (2) is connected to the filter (3) through the filter inlet pipe (21). The filter (3) is connected to a waste catalyst storage tank (4). The primary reactor (1) is connected to the filter inlet pipe (21) through a pipe. The filter (3) is equipped with a filter plate (13) inside. The filter plate (13) is equipped with a rotating scraper (14) driven by a drive motor (15). The flushing liquid storage tank (5) is connected to the filter (3) through a flushing liquid discharge pump (17).

2. The reactor waste catalyst discharge device according to claim 1, characterized in that, The secondary reactor (2) is equipped with a spray plate (8) inside, and a stirring paddle (6) is provided below the spray plate (8). The discharge port of the secondary reactor (2) is connected to the circulating discharge pump (7) through the inlet and outlet pipe (10). The circulating discharge pump (7) is connected to the spray plate (8) through the circulating pipe (9).

3. The reactor waste catalyst discharge device according to claim 2, characterized in that, The circulation pipe (9) is connected to the filter (3) through the filter inlet pipe (21), and the connection between the filter inlet pipe (21) and the filter (3) is located above the filter plate (13).

4. The reactor spent catalyst discharge device according to claim 2, characterized in that, The flushing fluid discharge pump (17) is connected to the spray plate (8) through the spray pipe (20), and the flushing fluid discharge pump (17) is connected to the filter (3) through the backwash pipe (19). The connection between the backwash pipe (19) and the filter (3) is located below the filter plate (13).

5. The reactor waste catalyst discharge device according to claim 2, characterized in that, The bottom of the filter (3) is connected to the inlet and outlet pump pipe (10) via a return pipe (11), and an observation port (12) is provided on the return pipe (11).

6. The reactor waste catalyst discharge device according to claim 1, characterized in that, The outer side of the primary reactor (1) is provided with a primary reactor insulation sleeve (22), and the outer side of the filter (3) is provided with a filter insulation sleeve (18). The primary reactor insulation sleeve (22) is connected to the filter insulation sleeve (18) through a connecting pipe (23).

7. The reactor waste catalyst discharge device according to claim 1, characterized in that, The filter (3) has a waste catalyst outlet (16) on its vertical wall. The waste catalyst outlet (16) is located above the filter plate (13) and is connected to the waste catalyst storage tank (4) through a pipe.

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