Multi-stage multi-baffle demister for phosphoric acid tail gas

Abstract

The utility model provides a phosphoric acid tail gas multistage multi-baffle demister, which relates to the technical field of tail gas defoaming, and comprises a square tower, inclined plates are fixedly connected in the square tower and close to the inner walls of the two sides at equal intervals, the other ends of the inclined plates are fixedly connected with demister bodies, the demister bodies are fixedly connected with the inner wall of the square tower, and the demister bodies are fixedly connected with the inner wall of the square tower. A square hole is formed in one side wall of the square tower, an annular plate is arranged in the square tower, a filter screen is installed in the annular plate, and one end of the annular plate penetrates through the square hole and is in sliding connection with the square hole. A plurality of inclined plates are arranged in the square tower, so that the effect of changing the airflow direction can be achieved, gas can repeatedly penetrate through the demister body at the moment, the effect of separating liquid drops from the airflow by utilizing inertia force and adhesive force can be achieved, and the separation efficiency can be improved due to the fact that the gas penetrates through the demister body for many times; and meanwhile, the inclined plate can drop condensed liquid drops to the lower layer, so that the liquid drops fall to the bottom of the square tower and are conveniently collected.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas defoaming, in particular to a multi-stage compound baffle defoamer for phosphoric acid tail gas. Background Art

[0002] During the production process of phosphoric acid, acid mist and aerosol in the tail gas will pollute the environment, so effective treatment is required through a defoamer. A baffle defoamer is a device used to remove liquid droplets and aerosol in the tail gas.

[0003] Existing defoamers are usually directly installed inside the tower, which usually can only be processed once, with poor treatment effect. At the same time, there are usually some impurity particles inside the tail gas, which easily cause blockage of the wire mesh defoaming device, thereby affecting the treatment efficiency. Therefore, a multi-stage compound baffle defoamer for phosphoric acid tail gas is needed to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems existing in the prior art that the defoamer is usually directly installed inside the tower, which usually can only be processed once, with poor treatment effect, and during the treatment process, the wire mesh defoaming device is easily blocked, and a multi-stage compound baffle defoamer for phosphoric acid tail gas is proposed.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A multi-stage compound baffle defoamer for phosphoric acid tail gas, including a square tower, wherein inclined plates are equally spaced and fixedly connected near both inner walls of the square tower, the other ends of the inclined plates are fixedly connected with defoamer bodies, the defoamer bodies are fixedly connected with the inner wall of the square tower, a square hole is opened on one side wall of the square tower, a ring plate is arranged inside the square tower, a filter screen is installed inside the ring plate, one end of the ring plate passes through the square hole and is slidably connected therewith, one end of the ring plate is fixedly connected with a cover plate, mounting holes are opened at both ends of the cover plate, and screw grooves are opened at both ends of the square hole on one side wall of the square tower.

[0006] Preferably, an air inlet pipe is fixedly connected and communicated below the filter screen on one side wall of the square tower, and an air outlet pipe is fixedly connected and communicated near the top on one side wall of the square tower.

[0007] Preferably, a drain pipe is fixedly connected and communicated near the bottom on the other side wall of the square tower.

[0008] Preferably, an embedding groove is opened on the inner wall of the square tower, and the other end of the ring plate is embedded inside the embedding groove and is adapted thereto.

[0009] Preferably, a ring groove is opened at the position of the square hole on one side wall of the square tower, a sealing ring gasket is embedded inside the ring groove, and the sealing ring gasket is fixedly connected with the cover plate.

[0010] Preferably, a handle is fixedly connected to the surface of the cover plate near the center.

[0011] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0012] 1. In the present utility model, since there are multiple inclined plates inside the square tower, the effect of changing the air flow direction can be achieved. At this time, the gas will pass through the demister body repeatedly, and the effect of separating droplets from the air flow by using inertial force and adhesion force can be achieved. Since it passes through multiple times, the separation efficiency can be improved. At the same time, the inclined plates can drip the condensed droplets downward, which can play a role in falling to the bottom of the square tower for convenient collection.

[0013] 2. In the present utility model, through the filter screen in the ring plate, the effect of filtering impurity particles in the tail gas can be achieved, so as to prevent the impurity particles from blocking the wire mesh on the demister body. At the same time, by removing the screws in the screw grooves and mounting holes, it is convenient to replace the filter screen in the ring plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is a three-dimensional view of the overall structure of a multi-stage compound demister for phosphoric acid tail gas proposed by the present utility model;

[0015] Figure 2 FIG. is a partial three-dimensional view of the overall structure of a multi-stage compound demister for phosphoric acid tail gas proposed by the present utility model;

[0016] Figure 3 FIG. is a three-dimensional view of the structure of area A in a multi-stage compound demister for phosphoric acid tail gas proposed by the present utility model Figure 2 in;

[0017] Figure 4 FIG. is a plan view of the overall structure of a multi-stage compound demister for phosphoric acid tail gas proposed by the present utility model;

[0018] Figure 5 FIG. is a partial three-dimensional view of a multi-stage compound demister for phosphoric acid tail gas proposed by the present utility model.

[0019] Legend: 1. Square tower; 2. Inclined plate; 3. Demister body; 4. Inlet pipe; 5. Outlet pipe; 6. Drain pipe; 7. Square hole; 8. Embedded groove; 9. Ring plate; 10. Filter screen; 11. Ring groove; 12. Sealing ring gasket; 13. Cover plate; 14. Mounting hole; 15. Handle; 16. Screw groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0021] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited to the limitations of the specific embodiments disclosed in the following specification.

[0022] Embodiment 1, as Figures 1-4 shown, the present utility model provides a multi-stage demisting device for phosphoric acid tail gas, including a square tower 1. Inside the square tower 1 and near both side inner walls, inclined plates 2 are fixedly connected at equal intervals. The other ends of the inclined plates 2 are fixedly connected to a demister body 3, and the demister body 3 is fixedly connected to the inner wall of the square tower 1. A square hole 7 is opened on one side wall of the square tower 1. Inside the square tower 1, there is an annular plate 9. Inside the annular plate 9, a filter screen 10 is installed. One end of the annular plate 9 passes through the square hole 7 and is slidably connected thereto. One end of the annular plate 9 is fixedly connected to a cover plate 13. Installation holes 14 are opened at both ends of the cover plate 13. Screw grooves 16 are opened on one side wall of the square tower 1 and at both ends of the square hole 7.

[0023] The overall effect achieved by the entire Embodiment 1 is that by fixedly connecting inclined plates 2 at equal intervals inside the square tower 1 and near both side inner walls, and fixedly connecting the other ends of the inclined plates 2 to the demister body 3, and the demister body 3 is fixedly connected to the inner wall of the square tower 1, it can achieve the effect of liquid separation of the tail gas. By opening a square hole 7 on one side wall of the square tower 1, providing an annular plate 9 inside the square tower 1, installing a filter screen 10 inside the annular plate 9, one end of the annular plate 9 passing through the square hole 7 and being slidably connected thereto, one end of the annular plate 9 being fixedly connected to a cover plate 13, and opening installation holes 14 at both ends of the cover plate 13, and opening screw grooves 16 on one side wall of the square tower 1 and at both ends of the square hole 7, it can achieve the effect of removing the screws in the screw grooves 16 and the installation holes 14, and at this time, pulling out the annular plate 9 inside the square tower 1 from the square hole 7.

[0024] Embodiment 2, as Figures 1-4As shown, an air inlet pipe 4 is fixed and connected to one side wall of the square tower 1 and is located below the filter screen 10, and an air outlet pipe 5 is fixed and connected to one side wall of the square tower 1 and is close to the top; a liquid discharge pipe 6 is fixed and connected to the other side wall of the square tower 1 and is close to the bottom; an embedding groove 8 is provided on the inner wall of the square tower 1, and the other end of the ring plate 9 is embedded in the embedding groove 8 and matched with it; an annular groove 11 is provided on one side wall of the square tower 1 and is located at the square hole 7, and a sealing ring gasket 12 is embedded in the inside of the annular groove 11, and the sealing ring gasket 12 is fixedly connected to the cover plate 13; a handle 15 is fixedly connected to the surface of the cover plate 13 and close to the center.

[0025] The effects achieved by the entire embodiment 2 are as follows: an air inlet pipe 4 is fixed and connected through one side wall of the square tower 1 and located below the filter screen 10, and an air outlet pipe 5 is fixed and connected through one side wall of the square tower 1 and near the top, which can achieve the effects of air intake and exhaust; a liquid discharge pipe 6 is fixed and connected through the other side wall of the square tower 1 and near the bottom, which can achieve the effect of liquid discharge; an embedding groove 8 is opened through the inner wall of the square tower 1, and the other end of the ring plate 9 is embedded in the embedding groove 8 and matched with it, which can achieve the effect of positioning one end of the ring plate 9; an annular groove 11 is opened through one side wall of the square tower 1 and located at the square hole 7, and a sealing ring gasket 12 is embedded in the inside of the annular groove 11, and the sealing ring gasket 12 is fixedly connected to the cover plate 13, which can achieve the effect of sealing the cover plate 13; a handle 15 is fixedly connected through the surface of the cover plate 13 and near the center, which can achieve the effect of facilitating the pulling out of the cover plate 13.

[0026] Working principle: gas is poured into the square tower 1 through the air inlet pipe 4, and can pass through the filter screen 10 to filter the exhaust gas. At this time, the exhaust gas can change the direction of the exhaust gas flow through the inclined plate 2, and the changed direction can pass through the demister body 3. At this time, the gas will repeatedly change direction and pass through multiple demister bodies 3, which can use inertia and adhesion to separate droplets from the airflow. The separation efficiency can be improved due to multiple passages. At the same time, the inclined plate 2 can drip the condensed droplets to the lower layer, which can fall to the bottom of the square tower 1 for easy collection, and the collected liquid can be discharged through the drain pipe 6. When the filter screen 10 needs to be replaced, the screws in the screw groove 16 and the mounting hole 14 can be removed to facilitate the replacement of the filter screen 10 in the ring plate 9.

[0027] The wiring diagram of the demister body 3 in the present invention is common knowledge in the art, and its working principle is a known technology. The model is selected according to the actual use, so the control method and wiring arrangement of the demister body 3 are not explained in detail.

[0028] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as they do not depart from the technical solution content of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A phosphoric acid tail gas multi-stage multi-block demister, comprising a square tower (1), characterized in that: Inclined plates (2) are fixedly connected at equal intervals inside the square tower (1) and close to the inner walls on both sides; the other ends of the inclined plates (2) are fixedly connected to a demister body (3); the demister body (3) is fixedly connected to the inner wall of the square tower (1); a square hole (7) is provided on one side wall of the square tower (1); a ring plate (9) is provided inside the square tower (1); a filter screen (10) is installed inside the ring plate (9); one end of the ring plate (9) passes through the square hole (7) and is slidably connected thereto; one end of the ring plate (9) is fixedly connected to a cover plate (13); both ends of the cover plate (13) are provided with mounting holes (14); and a screw groove (16) is provided on one side wall of the square tower (1) and located at both ends of the square hole (7).

2. A phosphoric acid tail gas multi-stage multiple-block demister according to claim 1, characterized in that: An air inlet pipe (4) is fixed to and connected to a side wall of the square tower (1) and is located below the filter screen (10), and an air outlet pipe (5) is fixed to and connected to a side wall of the square tower (1) and is located near the top.

3. The phosphoric acid tail gas multi-stage multiple-block demister according to claim 1, characterized in that: A liquid discharge pipe (6) is fixed to and connected to the other side wall of the square tower (1) near the bottom.

4. The phosphoric acid tail gas multi-stage multiple-block demister according to claim 1, characterized in that: The inner wall of the square tower (1) is provided with an embedding groove (8), and the other end of the ring plate (9) is embedded in the embedding groove (8) and matched therewith.

5. The phosphoric acid tail gas multi-stage multiple-block demister according to claim 1, characterized in that: A ring groove (11) is provided on one side wall of the square tower (1) at the position of the square hole (7), a sealing ring gasket (12) is embedded in the ring groove (11), and the sealing ring gasket (12) is fixedly connected to the cover plate (13).

6. The phosphoric acid tail gas multi-stage multiple-block demister according to claim 1, characterized in that: A handle (15) is fixedly connected to the surface of the cover plate (13) near the center.

Images