External mist eliminator

Abstract

The utility model belongs to the technical field of mist eliminators, and particularly relates to an external mist eliminator which comprises a mist eliminator bin, a mist eliminator block is fixedly mounted in the mist eliminator bin, and an upper sealing head is fixedly mounted on the upper end face of the mist eliminator block; the mist eliminator block comprises a supporting ring fixedly installed with the upper sealing head, a mist-capturing lower grating plate is placed on the upper end face of the supporting ring, a mist-capturing upper grating plate is fixedly installed on the upper side of the mist-capturing lower grating plate, a mist-capturing upper grating plate is fixedly installed on the upper side of the mist-capturing material, and the mist-capturing upper grating plate is fixedly installed on the lower side of the mist-capturing material. And the upper foam catching grating plate, the lower foam catching grating plate and the supporting ring are fixedly connected through fixing bolts. According to the utility model, the non-planar mist eliminator is arranged, so that compared with a planar mist eliminator, the non-planar mist eliminator has a larger interception area, and the mist capturing effect is enhanced; by the adoption of the non-planar mist eliminator, intercepted liquid is distributed to the edge with the small airflow speed, the resistance of liquid dripping and backflow is reduced, the resistance of airflow rising is also reduced, and gas-liquid backflow is smoother.

Description

TECHNICAL FIELD

[0001] The utility model relates to a catcher technical field, concretely is a kind of external catcher. BACKGROUND

[0002] The catcher is a kind of equipment for separating liquid droplets entrained in gas, and is widely used in gas-liquid separation device in chemical industry, petroleum, tower manufacturing and other industries.Catcher is mainly composed of wire mesh and wire mesh grid, and the wire mesh is gas-liquid filter screen made of various materials, including metal wire or non-metal wire.When the gas with mist rises through the wire mesh at a certain speed, the mist is attached to the surface of the fine wire due to the inertia effect of the rising mist.The diffusion of mist on the surface of fine wire and the gravity settlement of mist make the liquid droplets become larger and larger along the fine wire until the gathered liquid droplets are large enough to overcome the combined force of the rising force of gas and the surface tension of liquid, and then the liquid droplets are separated from the fine wire and fall down.The wire mesh is usually arranged on the cross section of gas mist passage, that is, the wire mesh plane is perpendicular to the gas path.In this case, the intercepted mist droplets form resistance to the gas path before they grow large enough to drop, and if the gas flow is slightly large, the mist droplets may be blown apart, forming secondary liquid overflow, thereby seriously affecting the catching effect. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides an external catcher, which solves the problems mentioned in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an external catcher, comprising a catcher bin, a catcher block is fixedly installed inside the catcher bin, an upper end face of the catcher bin is fixedly installed with an upper head;

[0005] The catcher block comprises a support ring fixedly installed with the catcher bin, a catcher lower grid plate is placed on the upper end face of the support ring, a catcher material is fixedly installed on the upper side of the catcher lower grid plate, a catcher upper grid plate is fixedly installed on the upper side of the catcher material, and the catcher upper grid plate, the catcher material, the catcher lower grid plate and the support ring are fixedly connected by a fixing bolt.

[0006] As a preferred technical scheme of the utility model, the catcher material and the catcher lower grid plate are center-upward non-planar structures.

[0007] As a preferred technical scheme of the utility model, the mist catcher bin comprises a shell, a connecting flange is fixedly installed on the upper end face of the shell, a liquid backflow port is fixedly installed on the lower side of the shell, a liquid receiving bin is arranged in the shell, a mist catcher block is fixedly installed in the liquid receiving bin, a gas inlet pipe is fixedly installed in the liquid receiving bin after penetrating through the shell, and a gas inlet is arranged at the end of the shell away from the liquid receiving bin.

[0008] As a preferred technical scheme of the utility model, the upper head comprises an upper head shell, an upper pressure relief hole and a tail gas outlet are fixedly installed on the upper side of the upper head shell, a lower connecting flange is fixedly installed on the lower end face of the upper head shell, and a connecting flange is fixedly installed on the lower end face of the lower connecting flange.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] (1) The utility model has a larger interception area than the planar mist catcher, and the mist catching effect is enhanced.

[0011] (2) The non-planar mist catcher is adopted, liquid is intercepted and shunted to the edge with smaller gas flow velocity, the resistance of liquid drop backflow is reduced, the resistance of gas flow upward is also reduced, and the gas-liquid countercurrent is more smooth.

[0012] (3) The liquid backflow path and the gas flow inlet path are branched, the possibility of secondary liquid overflow is reduced, the tail gas cleanliness is improved while realizing resource recycling, and the burden of subsequent tail gas treatment is effectively reduced.

[0013] (4) The mist catcher is external, which is beneficial to gas flow heat dissipation, and is also convenient for maintenance and maintenance. DRAWINGS

[0014] Figure 1 It is a whole structure diagram of the conical mist catcher;

[0015] Figure 2 It is a whole structure diagram of the arc-shaped mist catcher;

[0016] Figure 3 It is a lower cavity schematic view of the conical mist catcher;

[0017] Figure 4 It is a lower cavity schematic view of the arc-shaped mist catcher;

[0018] Figure 5 It is a schematic view of the upper head of the utility model.

[0019] In the drawings:

[0020] 1, the catcher bin; 11, the shell; 12, the connecting flange; 13, the gas inlet; 14, the gas inlet pipe; 15, the liquid receiving bin; 16, the liquid return port; 17, the support ring;

[0021] 2, the catcher block; 21, the catcher material; 22, the upper catcher grid plate; 23, the lower catcher grid plate; 24, the fixing bolt;

[0022] 3, the upper head; 31, the upper head shell; 32, the tail gas outlet; 33, the pressure relief hole; 34, the connecting flange. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment 1

[0024] Please refer to Figures 1-5 The utility model provides the following technical scheme: an external catcher, comprising a catcher bin 1, characterized in that: the catcher bin 1 internally fixedly installs a catcher block 2, and the upper end face of the catcher bin 1 fixedly installs an upper head 3.

[0025] The catcher block 2 comprises a support ring 17 fixedly installed with the catcher bin 1, the lower catcher grid plate 23 is placed on the upper end face of the support ring 17, the catcher material 21 is fixedly installed on the upper side of the lower catcher grid plate 23, the upper catcher grid plate 22 is fixedly installed on the upper side of the catcher material 21, and the upper catcher grid plate 22, the catcher material 21, the lower catcher grid plate 23 and the support ring 17 are fixedly connected by the fixing bolt 24.

[0026] In the embodiment, the main role of the catcher bin 1 is to provide a closed space for the catcher operation and the catcher block 2, and the connection between the catcher bin 1 and the upper head 3 adopts sealing gasket sealing and bolt connection, and the main role of the upper head 3 is to provide a gas outlet and prevent safety accidents caused by excessive pressure;

[0027] The lower catcher grid plate 23 and the upper catcher grid plate 22 are arranged as a center-upward arc structure, so that the intercepted liquid is shunted to the edge with smaller gas flow speed, the resistance of liquid drop return flow is reduced, the resistance of gas flow upward is also reduced, and the gas-liquid counterflow is more smooth.

[0028] Specifically, the mist catcher bin 1 comprises a shell 11, a connecting flange 12 is fixedly installed on the upper end face of the shell 11, a liquid return port 16 is fixedly installed on the lower side of the shell 11, a liquid receiving bin 15 is arranged in the shell 11, the mist catcher block 2 is fixedly installed in the liquid receiving bin 15, the gas inlet pipe 14 is fixedly installed in the liquid receiving bin 15 after penetrating through the shell 11, and the gas inlet 13 is arranged at the end of the shell 11 away from the liquid receiving bin 15.

[0029] In the embodiment, the shell 11 and the connecting flange 12 are connected by welding, the liquid return port 16 and the shell 11 are connected by welding, an opening is arranged at the connecting position between the liquid return port 16 and the shell 11, so that the liquid can flow through the opening into the liquid return port 16 and be discharged, the liquid receiving bin 15 arranged in the shell 11 is a cavity, and the structure is arranged as a lower arc structure, so that the captured liquid flows along the arc structure into the liquid return port 16, the support ring 17 and the shell 11 are connected by welding, and the gas inlet pipe 14 and the shell 11 are connected by welding.

[0030] Specifically, the upper head 3 comprises an upper head shell 31, the upper head shell 31 is fixedly installed on the upper side of the upper head shell 31, the upper head shell 31 is fixedly installed on the upper side of the upper head shell 31, the upper head shell 31 is fixedly installed on the lower end face of the lower connecting flange 34, and the connecting flange 12 is fixedly installed on the lower end face of the connecting flange 12.

[0031] In the embodiment, the upper head shell 31 and the upper pressure relief hole 33 and the tail gas outlet 32 are connected at the connecting positions and are provided with communicating holes, the upper head shell 31 and the lower connecting flange 34 are connected by welding, and the lower connecting flange 34 and the connecting flange 12 are connected by bolt connection. Embodiment 2

[0032] The mist catching lower grid plate 23, the mist catching material 21 and the mist catching upper grid plate 22 are arranged as a center-upward tapered structure.

[0033] The working principle and use process of the utility model are as follows: during equipment working process, the pressure relief hole 33 is closed, under the action of the system induced fan, the mist gas from the workshop diffuses into the mist catcher bin 1 through the gas inlet 13 and the gas inlet pipe 14, when the gas with mist rises through the mist catching lower grid plate 23, the mist catching material 21 and the mist catching upper grid plate 22 at a certain speed, the mist collides with the filaments of the wire mesh and is attached to the surface of the filaments;

[0034] The diffusion of the mist on the filament surface and the gravity settlement of the mist make the mist form larger droplets and flow along the filament to the intersection of the two filaments. Due to the wettability of the filament and the gravity, the droplets are separated from the filament to the edge of the mist catcher before the droplets grow to overcome the combined force of the upward force of the gas and the surface tension of the liquid. These droplets are collected into larger droplets at the edge of the mist catcher, and the larger droplets either drip quickly or flow through the wall of the mist catcher bin to the bottom of the mist catcher.

[0035] The captured liquid is collected in the liquid receiving bin 15, flows back to the liquid recovery system through the liquid return port 16, and the purified gas is discharged from the device through the tail gas outlet 32 of the upper head under the action of the induced draft fan, and enters the next processing process.

[0036] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application 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 replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An external mist eliminator comprising a mist eliminator cartridge (1) characterised in that: The inside of the mist catcher bin (1) is fixedly installed with a mist catcher block (2), and the upper end face of the mist catcher bin (1) is fixedly installed with an upper end cover (3); The mist catcher block (2) comprises a supporting ring (17) fixedly installed with the mist catcher bin (1), the upper end face of the supporting ring (17) is placed with a lower mist catching grid plate (23), the upper side of the lower mist catching grid plate (23) is fixedly installed with a mist catching material (21), the upper side of the mist catching material (21) is fixedly installed with an upper mist catching grid plate (22), and the upper mist catching grid plate (22), the mist catching material (21), the lower mist catching grid plate (23) and the supporting ring (17) are fixedly connected through fixed bolts (24).

2. An external mist eliminator according to claim 1, characterized in that: The mist catching material (21) and the lower mist catching grid plate (23) are a central upwarping non-planar structure.

3. An external mist eliminator according to claim 1, characterized in that: The mist catcher bin (1) comprises a shell (11), the upper end face of the shell (11) is fixedly installed with a connecting flange (12), the lower side of the shell (11) is fixedly installed with a liquid backflow port (16), the inside of the shell (11) is provided with a liquid receiving bin (15), the inside of the liquid receiving bin (15) is fixedly installed with the mist catcher block (2), a gas inlet pipe (14) penetrates through the shell (11) and is then fixedly installed in the liquid receiving bin (15), and the end of the shell (11) away from the liquid receiving bin (15) is provided with a gas inlet port (13).

4. An external mist eliminator according to claim 1, characterized in that: The upper end cover (3) comprises an upper end cover shell (31), the upper side of the upper end cover shell (31) is fixedly installed with an upper pressure relief hole (33) and a tail gas outlet (32), the lower end face of the upper end cover shell (31) is fixedly installed with a lower connecting flange (34), and the lower end face of the lower connecting flange (34) is fixedly installed with the connecting flange (12).

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