A yellow phosphorus production deslagging flue gas recovery device

Abstract

The utility model discloses a kind of yellow phosphorus production deslagging flue gas recovery devices, belong to yellow phosphorus production field, to solve the flue gas generated under existing technology waste residue treatment is usually mixed with solid particulate matter, these particulate matters pass through the screen hole of plate tower tray, extremely easy to have jam phenomenon, screen hole jam can significantly affect the flow and flow velocity of flue gas through tray, lead to gas-liquid mass transfer efficiency drop, and then reduce the absorption effect of phosphorus pentoxide, serious time even force equipment shutdown cleaning, substantially increase maintenance cost and production interruption risk problem. Including plate tower apron, the upper end of plate tower apron is fixedly connected with the tower body for treating yellow phosphorus deslagging waste gas, the lower left end of tower body is fixedly connected with air inlet pipe, the inside and outside of tower body are provided with recovery mechanism, the inside of air inlet pipe is provided with anti-blocking mechanism, and the anti-blocking mechanism includes the mounting plate connected to the left inside of air inlet pipe, the inside of mounting plate is connected with dust filter screen.

Description

Technical Field

[0001] This utility model belongs to the field of yellow phosphorus production, specifically relating to a yellow phosphorus production slag flue gas recovery device. Background Technology

[0002] The waste treatment process during yellow phosphorus production generates corrosive and toxic fumes containing phosphorus pentoxide, which, if directly emitted, will cause serious harm to the environment and human health. Currently, the industry commonly uses plate towers as the core equipment, employing dilute phosphoric acid absorbent to absorb phosphorus pentoxide from the fumes. This method utilizes the principle of gas-liquid countercurrent contact and has certain advantages in phosphorus pentoxide absorption efficiency.

[0003] However, in actual production, the flue gas generated from waste residue treatment usually contains solid particulate matter. This particulate matter is very prone to clogging when passing through the sieve holes of the plate tower. Clogged sieve holes significantly affect the flow rate and velocity of flue gas through the tower plate, leading to a decrease in gas-liquid mass transfer efficiency, which in turn reduces the absorption effect of phosphorus pentoxide. In severe cases, it can even force the equipment to be shut down for cleaning, greatly increasing maintenance costs and the risk of production interruption.

[0004] Therefore, there is an urgent need to develop a yellow phosphorus production slag flue gas recovery device to prevent the filter holes in the tower tray from becoming clogged. Utility Model Content

[0005] (1) Technical problems to be solved To address the shortcomings of existing technologies, the purpose of this utility model is to provide a yellow phosphorus production slag flue gas recovery device. This device aims to solve the problem that the flue gas generated from waste slag treatment in existing technologies typically contains solid particulate matter. When these particles pass through the sieve holes of a plate tower, they are prone to clogging. This clogging significantly affects the flow rate and velocity of the flue gas through the tower plate, leading to a decrease in gas-liquid mass transfer efficiency and consequently reducing the absorption effect of phosphorus pentoxide. In severe cases, it can even force the equipment to be shut down for cleaning, significantly increasing maintenance costs and the risk of production interruption.

[0006] (2) Technical solution To address the aforementioned technical problems, this utility model provides a yellow phosphorus production slag discharge flue gas recovery device, comprising a plate-type tower skirt base. A tower body for treating yellow phosphorus slag discharge flue gas is fixedly connected to the upper end of the plate-type tower skirt base. An air inlet pipe is fixedly connected to the lower left end of the tower body. Recovery mechanisms are provided at both the inner and outer ends of the tower body. An anti-clogging mechanism is provided inside the air inlet pipe, including an installation plate connected to the left side of the inside of the air inlet pipe. A dust filter is connected inside the installation plate. A vertical plate is welded to the left inner side of the air inlet pipe. A bearing is installed in the middle of the interior of the vertical plate. A rotating rod is installed inside the bearing. A fan blade is fixedly connected to the left end of the rotating rod, and a scraper is fixedly connected to the right end of the rotating rod. Disassembly and assembly units are provided at both the inner and outer ends of the air inlet pipe.

[0007] Furthermore, the disassembly and assembly unit includes an arc-shaped plate fixedly connected to the lower side of the mounting plate, a threaded rod welded to the lower side of the air intake pipe, and a nut threadedly connected to the outer side of the threaded rod.

[0008] Furthermore, the recovery mechanism includes a feed pipe fixedly connected to the middle position of the right end of the tower body, a return pipe fixedly connected to the upper left end of the tower body, an air outlet fixedly connected to the middle position of the upper end of the tower body, liquid inlet pipes located to the left and right of the air outlet at the upper end of the tower body, and a bottom liquid outlet fixedly connected to the bottom end of the tower body.

[0009] Furthermore, the mounting plate has an installation opening inside, and the dust filter is fixed to the inside of the installation opening. The right side of the scraper is slidably connected to the left side of the dust filter.

[0010] Furthermore, a through groove is provided at the lower end of the air intake pipe to the right of the fan blade, the outer side of the mounting plate is slidably connected to the inner side of the through groove, and the outer side of the upper end of the mounting plate abuts against the upper inner side of the air intake pipe.

[0011] Furthermore, a rubber pad is attached to the upper outer side of the mounting plate.

[0012] Furthermore, there are two threaded rods, which are respectively welded to the lower outer end of the air intake pipe at the left and right ends of the through groove. Circular holes are opened at the left and right ends below the arc plate. The outer side of the threaded rod is slidably connected to the inner side of the circular hole. The upper side of the nut abuts against the lower side of the arc plate. The lower outer end of the air intake pipe abuts against the upper side of the arc plate.

[0013] (3) Beneficial effects Compared with the prior art, the beneficial effects of this utility model are as follows: This invention incorporates an anti-clogging mechanism. When flue gas enters the tower body through the inlet pipe, solid particles are filtered out by the dust filter in the inlet pipe. This prevents flue gas containing solid particles from clogging the filter holes in the tower plates. Furthermore, when the flue gas enters the inlet pipe, the airflow causes the fan blades to rotate, which in turn causes the rotating rod to rotate, driving the scraper to rotate along the left side of the dust filter. This scrapes off the dust particles that accumulate on the left side of the dust filter, preventing continuous accumulation and clogging, and ensuring smooth filtration of the flue gas.

[0014] This utility model, by setting up a disassembly and assembly unit, allows the nut on the outside of the threaded rod to be rotated and removed from the outside of the threaded rod. Then, the arc-shaped plate slides down along the outside of the threaded rod, which can drive the mounting plate and the dust filter to slide down along the through groove, so that the dust filter can be removed from the air intake pipe. This allows the dust filter to be removed and replaced when it is damaged and can no longer filter properly. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the tower body of this utility model; Figure 3 This is a schematic diagram of the internal structure of the air intake pipe of this utility model; Figure 4 This is a schematic diagram of the lower end structure of the air intake pipe of this utility model.

[0017] The labels in the attached diagram are as follows: 1. Plate tower skirt; 2. Tower body; 3. Air inlet pipe; 401. Feed pipe; 402. Reflux pipe; 403. Air outlet; 404. Liquid inlet pipe; 405. Liquid outlet at the bottom of the tower; 406. Tower plate; 501. Mounting plate; 502. Dust filter; 503. Vertical plate; 504. Bearing; 505. Fan blade; 506. Scraper; 507. Rotating rod; 601. Arc plate; 602. Threaded rod; 603. Nut. Detailed Implementation

[0018] 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.

[0019] This specific embodiment is a yellow phosphorus production slag flue gas recovery device, the structural schematic diagram of which is shown below. Figure 1 and Figure 2 As shown, the tower includes a plate-type tower skirt 1. The upper end of the plate-type tower skirt 1 is fixedly connected to a tower body 2 for treating yellow phosphorus slag exhaust gas. An air inlet pipe 3 is fixedly connected to the lower left end of the tower body 2. Recovery mechanisms are provided at both the inner and outer ends of the tower body 2. The recovery mechanism includes a feed pipe 401 fixedly connected to the middle position of the right end of the tower body 2, a return pipe 402 fixedly connected to the upper left end of the tower body 2, an air outlet 403 fixedly connected to the middle position of the upper end of the tower body 2, liquid inlet pipes 404 provided to the left and right of the air outlet 403 at the upper end of the tower body 2, and a bottom liquid outlet 405 fixedly connected to the bottom end of the tower body 2.

[0020] Cooperate Figure 3 As shown, the intake pipe 3 is equipped with an anti-clogging mechanism, which includes a mounting plate 501 connected to the left side of the intake pipe 3. A dust filter 502 is connected inside the mounting plate 501. A vertical plate 503 is welded to the left side of the inner side of the intake pipe 3. A bearing 504 is installed in the middle of the vertical plate 503. A rotating rod 507 is installed inside the bearing 504. A fan blade 505 is fixedly connected to the left end of the rotating rod 507. A scraper 506 is fixedly connected to the right end of the rotating rod 507. An installation port is opened inside the mounting plate 501, and the dust filter 502 is fixed to the inside of the installation port. The right side of the scraper 506 is slidably connected to the left side of the dust filter 502. Thus, when the flue gas to be filtered and recovered is introduced into the tower body 2 through the inlet pipe 3, the flue gas is filtered by the dust filter 502 as it enters the inlet pipe 3. At the same time, the airflow will cause the fan blade 505 to rotate, which in turn causes the rotating rod 507 to rotate and drive the scraper 506 to rotate along the left side of the dust filter 502, scraping off the fixed particles that are constantly accumulating on the left side of the dust filter 502, thus preventing the dust filter 502 from being blocked by the continuous accumulation of fixed particles.

[0021] The lower end of the air inlet pipe 3 has a through groove located to the right of the fan blade 505. The outer side of the mounting plate 501 is slidably connected to the inner side of the through groove, and the outer upper end of the mounting plate 501 abuts against the upper inner side of the air inlet pipe 3. A rubber pad is attached to the outer upper end of the mounting plate 501. Thus, when the mounting plate 501 is fixed to the inner side of the air inlet pipe 3, the rubber pad at the upper end of the mounting plate 501 will contact the inner side of the air inlet pipe 3, keeping the contact point between the mounting plate 501 and the inner side of the air inlet pipe 3 sealed, ensuring that the flue gas entering the air inlet pipe 3 can only enter the tower body 2 after being filtered by the dust filter 502.

[0022] Cooperate Figure 4 As shown, the intake pipe 3 has disassembly and assembly units at both its inner and outer ends. Each disassembly and assembly unit includes an arc-shaped plate 601 fixedly connected to the lower side of the mounting plate 501. A threaded rod 602 is welded to the lower side of the intake pipe 3, and a nut 603 is threadedly connected to the outer side of the threaded rod 602. There are two threaded rods 602, which are respectively welded to the lower outer side of the intake pipe 3 at the left and right ends of the through groove. Circular holes are opened at the left and right ends below the arc-shaped plate 601. The outer side of the threaded rod 602 is slidably connected to the inner side of the circular hole. The upper side of the nut 603 abuts against the lower side of the arc-shaped plate 601, and the lower outer end of the intake pipe 3 abuts against the upper side of the arc-shaped plate 601. By rotating the nut 603 on the outside of the threaded rod 602, the rod can be removed from the outside of the threaded rod 602. Then, the arc plate 601 can slide down along the outside of the threaded rod 602, which can drive the mounting plate 501 and the dust filter 502 to slide down along the through groove, so that the dust filter 502 can be removed from the air intake pipe 3. This allows the dust filter 502 to be removed and replaced when it is damaged and cannot filter properly.

[0023] Working principle: When purifying and recovering the exhaust gas from yellow phosphorus production, dilute phosphoric acid absorbent is introduced into tower body 2 through inlet pipe 404. Then, the flue gas enters tower body 2 after being filtered by dust filter screen 502 through inlet pipe 3 to remove solid particles. Inside tower body 2, the flue gas rises from bottom to top through the filter holes inside tower plate 406. As it rises, phosphorus pentoxide in the flue gas is absorbed by the dilute phosphoric acid absorbent above tower plate 406. Finally, the purified recovered gas is discharged from the outlet 403 at the top and collected.

[0024] All technical features in this embodiment can be freely combined according to actual needs.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for recovering flue gas from yellow phosphorus production slag, comprising a plate tower skirt (1), characterized in that, The upper end of the plate tower skirt (1) is fixedly connected to the tower body (2) for treating yellow phosphorus slag exhaust gas. The lower left end of the tower body (2) is fixedly connected to the air inlet pipe (3). The inner and outer ends of the tower body (2) are provided with recycling mechanisms. The air inlet pipe (3) is provided with an anti-blocking mechanism. The anti-blocking mechanism includes an installation plate (501) connected to the left side of the air inlet pipe (3). The installation plate (501) is connected with a dust filter (502). The left side of the inner side of the air inlet pipe (3) is welded with a vertical plate (503). The middle position of the vertical plate (503) is installed with a bearing (504). The inner side of the bearing (504) is installed with a rotating rod (507). The left end of the rotating rod (507) is fixedly connected with a fan blade (505). The right end of the rotating rod (507) is fixedly connected with a scraper (506). The inner and outer ends of the air inlet pipe (3) are provided with disassembly and assembly units.

2. The yellow phosphorus production slag flue gas recovery device according to claim 1, characterized in that, The disassembly and assembly unit includes an arc-shaped plate (601) fixedly connected to the lower side of the mounting plate (501), and a threaded rod (602) is welded to the lower side of the air intake pipe (3). A nut (603) is threadedly connected to the outer side of the threaded rod (602).

3. The yellow phosphorus production slag flue gas recovery device according to claim 1, characterized in that, The recovery mechanism includes a feed pipe (401) fixedly connected to the middle position of the right end of the tower body (2), a return pipe (402) fixedly connected to the upper left end of the tower body (2), an air outlet (403) fixedly connected to the middle position of the upper end of the tower body (2), a liquid inlet pipe (404) provided at the left and right sides of the air outlet (403) at the upper end of the tower body (2), and a bottom liquid outlet (405) fixedly connected to the bottom end of the tower body (2).

4. The yellow phosphorus production slag flue gas recovery device according to claim 1, characterized in that, The mounting plate (501) has an installation opening inside, and the dust filter (502) is fixed to the inside of the installation opening. The right side of the scraper (506) is slidably connected to the left side of the dust filter (502).

5. The yellow phosphorus production slag flue gas recovery device according to claim 1, characterized in that, The lower end of the air intake pipe (3) is provided with a through groove located to the right of the fan blade (505). The outer side of the mounting plate (501) is slidably connected to the inner side of the through groove, and the outer side of the upper end of the mounting plate (501) abuts against the upper inner side of the air intake pipe (3).

6. The yellow phosphorus production slag flue gas recovery device according to claim 5, characterized in that, A rubber pad is attached to the outer side of the upper end of the mounting plate (501).

7. A yellow phosphorus production slag flue gas recovery device according to claim 2, characterized in that, There are two threaded rods (602), which are respectively welded to the lower outer end of the air inlet pipe (3) at the left and right ends of the through groove. The lower left and right ends of the arc plate (601) are provided with round holes. The outer side of the threaded rod (602) is slidably connected to the inner side of the round hole. The upper side of the nut (603) abuts against the lower side of the arc plate (601). The lower outer end of the air inlet pipe (3) abuts against the upper side of the arc plate (601).

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