Absorption tower with cleaning function

Abstract

The utility model relates to the technical field of formaldehyde production, and discloses an absorption tower with a cleaning function, which comprises an absorption part and a spraying part for spraying absorption liquid, a hollow cavity is formed inside the absorption part, a driving part is arranged outside the absorption part, a filler plate is rotatably connected inside the cavity along a horizontal plane, and the filler plate is connected with the spraying part. The output end of the driving part is connected with the filler plate, the filler plate is driven by the driving part to rotate in the cavity, the absorbing part comprises a bottom shell, the cavity is formed in the top of the bottom shell, a detachable top cover is arranged above the bottom shell, and a screw used for abutting against the top cover is connected to the bottom shell in a screwed mode; through the arrangement of the driving piece and the rotatable filler plate, when a person needs to clean the filler plate, the filler plate is driven to rotate through the driving piece, impurities attached to the filler plate fall off under the action of centrifugal force, then the device is cleaned, the cleaning difficulty of the device is reduced, and the cleaning efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of formaldehyde production, in particular to an absorption tower with a cleaning function. Background Art

[0002] In the formaldehyde production process, methanol and oxygen undergo oxidative dehydrogenation reaction at high temperature to produce formaldehyde gas, water vapor, unreacted methanol and other by-products. These gas mixtures need to be processed through an absorption tower to collect and convert them into liquid formaldehyde solution. The traditional absorption tower design mainly focuses on how to efficiently absorb formaldehyde gas, but over time, various impurities and reaction by-products are easily accumulated inside the absorption tower, resulting in reduced absorption efficiency, increased operating costs, and even equipment failures and safety issues. Although existing absorption towers have made certain progress in design and operation, they still have certain defects during long-term operation.

[0003] For example, in a Chinese patent with the announcement number "CN 220071208 U", a circulating spray absorption tower for formaldehyde production is disclosed, the device comprises: a base, the base is designed to be hollow inside, a tower body is fixedly connected to the top of the base, two packing support plates are arranged in the middle part of the tower body, packing is placed on the top of the packing support plates, a stepper motor is fixedly installed inside the base, a stirring shaft is fixedly connected to the output shaft of the stepper motor, the stirring shaft passes through the tower body and the two packing support plates in sequence and extends to the inside of the tower body, a section of the stirring shaft that passes through the packing support plates and contacts the packing is fixedly connected to a plurality of stirring rods, when the above device is used, a cleaning agent is added to the spray liquid by setting a cleaning agent box connected to an additive pipe and sprayed from a nozzle, and at the same time, a stepper motor is set to drive the stirring shaft and the stirring rod to rotate to clean the packing, although the above device can clean the packing structure to a certain extent, it can only clean the surface of the packing structure, and cannot effectively clean the inside of the packing structure, thereby reducing the cleaning efficiency of the packing structure. Utility Model Content

[0004] The utility model provides an absorption tower with a cleaning function to solve the problem that the existing device cannot effectively clean the inside of the filler structure.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: an absorption tower with a cleaning function, comprising an absorption member and a spray member for spraying absorption liquid, a hollow cavity is formed inside the absorption member, and a driving member is arranged on the outside of the absorption member, a packing plate is connected to the inside of the cavity and rotates along a horizontal plane, an output end of the driving member is connected to the packing plate, and the packing plate is driven to rotate inside the cavity by the driving member.

[0006] Preferably, the absorbent comprises a bottom shell, the cavity is formed on the top of the bottom shell, a detachable top cover is arranged above the bottom shell, and a screw for contacting the top cover is screwed and connected to the bottom shell;

[0007] A feed pipe for inputting raw materials is fixedly connected to the bottom shell, and a liquid adding pipe for adding spray liquid is fixedly connected to one side of the bottom shell. An outlet pipe for exhausting gas is fixedly connected to the top of the top cover, and a drain pipe for exhausting formaldehyde solution is fixedly connected to the bottom of the bottom shell. Valves are installed on the drain pipe and the liquid adding pipe, and the outlet pipe is above the packing plate.

[0008] Preferably, a base frame is fixedly connected to the interior of the cavity, a through-type installation groove is opened on the base frame, and the filler plate is rotatably connected to the interior of the installation groove.

[0009] Preferably, a second motor is fixedly connected to the bottom shell, and an output end of the second motor is connected to the filler plate.

[0010] Preferably, the spray part includes a circulation pump fixedly connected to the bottom shell, the liquid inlet end of the circulation pump extends to the bottom end of the cavity, and the liquid outlet end of the circulation pump is fixedly connected to a connecting pipe, and a plurality of spray pipes are fixedly connected to one side of the connecting pipe, and the liquid outlet ends of the spray pipes all extend to the inside of the top cover.

[0011] Preferably, a support member is provided under the bottom shell, and the support member includes a bottom plate, and two support plates are symmetrically fixedly connected to the top of the bottom plate. The bottom shell is rotatably connected between the two support plates, and a first motor is fixedly connected to the support plate, and the output end of the first motor is connected to the bottom shell.

[0012] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0013] (1) By providing a driving member and a rotatable packing plate, when a person needs to clean the packing plate, the driving member drives the packing plate to rotate, so that impurities attached to the packing plate fall off under the action of centrifugal force, thereby cleaning the device, thereby reducing the cleaning difficulty of the device and improving the cleaning efficiency of the device;

[0014] (2) On the basis of the above beneficial effects, by setting a support plate and a first motor, when personnel need to remove impurities from the bottom shell, they only need to unscrew the screw to separate the top cover from the bottom shell, and drive the bottom shell to rotate relative to the support plate through the first motor so that the opening of the bottom shell faces downward, thereby allowing the impurities inside the bottom shell to fall off automatically, further improving the cleaning efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is one of the three-dimensional diagrams of the utility model;

[0017] Figure 2 This is the second stereogram of the utility model;

[0018] Figure 3 This is the third stereogram of the utility model;

[0019] Figure 4 A three-dimensional diagram of the utility model with the support member removed;

[0020] Figure 5 A three-dimensional diagram of the utility model with the top cover removed;

[0021] Figure 6 for Figure 5 A perspective view with the filler plate removed;

[0022] Figure 7 This is one of the three-dimensional views of the top cover and the spraying member of the utility model when connected;

[0023] Figure 8 This is the second stereoscopic view of the top cover and the spraying member of the utility model when connected;

[0024] In the figure: 1. support member; 11. first motor; 12. support plate; 13. bottom plate; 2. spray member; 21. connecting pipe; 22. spray pipe; 23. circulation pump; 3. absorption member; 31. second motor; 32. valve; 33. drain pipe; 34. bottom shell; 35. liquid adding pipe; 36. feed pipe; 37. mounting groove; 38. base frame; 39. filler plate; 310. top cover; 311. air outlet pipe; 312. screw. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides Figure 1-Figure 8The absorption tower with cleaning function shown in the figure includes an absorption member 3 and a spray member 2 for spraying absorption liquid. A hollow cavity is formed inside the absorption member 3, and a driving member is arranged outside the absorption member 3. A packing plate 39 is connected to the cavity for rotation along a horizontal plane. The output end of the driving member is connected to the packing plate 39, and the packing plate 39 is driven to rotate inside the cavity by the driving member.

[0027] Through the above technical scheme, during the production process of formaldehyde, methanol and oxygen undergo an oxidative dehydrogenation reaction at high temperature to produce formaldehyde gas, water vapor, unreacted methanol and other by-products, and the above output substances are transported to the cavity inside the absorber 3. After the above substances enter the cavity, the absorption liquid is sprayed through the spray part 2. When the formaldehyde gas passes through the packing plate 39, the absorption liquid cooperates with the formaldehyde gas to form a formaldehyde solution, and the formaldehyde solution drips to the bottom of the absorber 3 due to gravity. When personnel need to clean the packing plate 39, the driving part is operated to drive the packing plate 39 to rotate inside the absorber 3, so that the adsorbed impurities in the packing plate 39 fall off under the action of centrifugal force, thereby cleaning the packing plate 39.

[0028] Specifically, in one embodiment, regarding the absorbent 3:

[0029] like Figure 1-Figure 6 As shown, the absorber 3 includes a bottom shell 34, a cavity is formed at the top of the bottom shell 34, and a detachable top cover 310 is arranged above the bottom shell 34, and a screw 312 for contacting the top cover 310 is screwed and connected to the bottom shell 34;

[0030] A feed pipe 36 for inputting raw materials is fixedly connected to the bottom shell 34, and a liquid adding pipe 35 for adding spray liquid is fixedly connected to one side of the bottom shell 34. An outlet pipe 311 for exhausting gas is fixedly connected to the top of the top cover 310, and a drain pipe 33 for discharging formaldehyde solution is fixedly connected to the bottom of the bottom shell 34. Valves 32 are installed on the drain pipe 33 and the liquid adding pipe 35, and the outlet pipe 311 is above the packing plate 39.

[0031] In the present embodiment, during the production process of formaldehyde, methanol and oxygen undergo an oxidative dehydrogenation reaction at high temperature to produce formaldehyde gas, water vapor, unreacted methanol and other by-products, and the above-mentioned output substances are transported to the feed pipe 36 through a pipeline, and the above-mentioned output substances are guided into the interior of the bottom shell 34 through the feed pipe 36, and the absorption liquid is sprayed through the spray part 2. When the formaldehyde gas passes through the filler plate 39, it is combined with the absorption liquid to form a formaldehyde solution, so that the formaldehyde solution drips to the bottom end of the absorbent 3 due to gravity, and is discharged through the outlet pipe 3 11 discharges gas, discharges formaldehyde solution through the discharge pipe 33, and replenishes spray liquid into the bottom shell 34 through the liquid adding pipe 35. When personnel need to clean the filling plate 39, stop inputting raw materials, and drive the filling plate 39 to rotate inside the bottom shell 34 through the driving member, so that the impurities adsorbed in the filling plate 39 fall off under the action of centrifugal force, thereby cleaning the filling plate 39, and rotating the screw 312 to separate the screw 312 from the top cover 310, and then remove the top cover 310 to clean the impurities inside the bottom shell 34.

[0032] How to install the filler plate 39? Figure 5-Figure 6 As shown, a base frame 38 is fixedly connected to the inside of the cavity, a through-type installation groove 37 is opened on the base frame 38, and a filler plate 39 is rotatably connected to the inside of the installation groove 37.

[0033] In this embodiment, the base frame 38 is supported by the bottom case 34 , and the filler plate 39 is supported by the mounting groove 37 on the base frame 38 .

[0034] In addition, in the present invention, regarding how the filler plate 39 rotates, as shown in FIG. Figure 1-Figure 6 As shown, the second motor 31 is fixedly connected to the bottom shell 34 , and the output end of the second motor 31 is connected to the filling plate 39 .

[0035] In this embodiment, when personnel need to clean impurities attached to the filling plate 39, the second motor 31 is operated to drive the filling plate 39 to rotate, so that the impurities attached to the filling plate 39 fall off under the action of centrifugal force.

[0036] Specifically, in one embodiment, regarding the above-mentioned spray element 2:

[0037] like Figure 1-Figure 4 and Figure 7-Figure 8 As shown, the spray part 2 includes a circulation pump 23 fixedly connected to the bottom shell 34, the liquid inlet end of the circulation pump 23 extends to the bottom end of the cavity, and the liquid outlet end of the circulation pump 23 is fixedly connected to a connecting pipe 21, and a plurality of spray pipes 22 are fixedly connected to one side of the connecting pipe 21, and the liquid outlet ends of the spray pipes 22 all extend to the inside of the top cover 310.

[0038] In this embodiment, when personnel need to spray the spray liquid onto the packing plate 39, the circulating pump 23 is operated, and then the circulating pump 23 draws the spray liquid inside the bottom shell 34, and the spray liquid is transported to the connecting pipe 21 through the circulating pump 23, and the spray liquid is transported to the spray pipe 22 through the connecting pipe 21, and the spray liquid is sprayed onto the packing plate 39 through the spray pipe 22, thereby absorbing the formaldehyde gas to form a formaldehyde solution.

[0039] When personnel need to discharge impurities generated when cleaning the packing plate 39, in order to facilitate complete discharge, such as Figure 1-Figure 6 As shown, a support member 1 is arranged below the bottom shell 34, and the support member 1 includes a bottom plate 13, and two support plates 12 are symmetrically fixedly connected to the top of the bottom plate 13. The bottom shell 34 is rotatably connected between the two support plates 12, and a first motor 11 is fixedly connected to the support plate 12, and the output end of the first motor 11 is connected to the bottom shell 34.

[0040] In this embodiment, the screw rod 312 is rotated to separate the screw rod 312 from the top cover 310, and the top cover 310 can be removed. The first motor 11 is operated to drive the bottom shell 34 to rotate relative to the support plate 12, so that the opening of the bottom shell 34 faces the direction, and impurities in the bottom shell 34 can be discharged, thereby improving the cleaning efficiency of the device.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An absorption tower with cleaning function, characterized in that: The invention comprises an absorbent (3) and a spraying member (2) for spraying absorption liquid, wherein a hollow cavity is formed inside the absorbent (3), and a driving member is arranged outside the absorbent (3), wherein a packing plate (39) is connected to the cavity and rotates along a horizontal plane, and an output end of the driving member is connected to the packing plate (39), and the packing plate (39) is driven to rotate inside the cavity by the driving member.

2. The absorption tower with cleaning function according to claim 1, characterized in that: The absorbent (3) comprises a bottom shell (34), the cavity is formed at the top of the bottom shell (34), a detachable top cover (310) is arranged above the bottom shell (34), and a screw (312) is screwed and connected to the bottom shell (34) for contacting the top cover (310); A feed pipe (36) for inputting raw materials is fixedly connected to the bottom shell (34), and a liquid adding pipe (35) for adding spraying liquid is fixedly connected to one side of the bottom shell (34). An outlet pipe (311) for discharging gas is fixedly connected to the top of the top cover (310), and a drain pipe (33) for discharging formaldehyde solution is fixedly connected to the bottom of the bottom shell (34). Valves (32) are installed on both the drain pipe (33) and the liquid adding pipe (35), and the outlet pipe (311) is located above the filler plate (39).

3. The absorption tower with cleaning function according to claim 2, characterized in that: A base frame (38) is fixedly connected to the interior of the cavity, a through-type installation groove (37) is provided on the base frame (38), and the filler plate (39) is rotatably connected to the interior of the installation groove (37).

4. The absorption tower with cleaning function according to claim 2, characterized in that: A second motor (31) is fixedly connected to the bottom shell (34), and an output end of the second motor (31) is connected to a filler plate (39).

5. The absorption tower with cleaning function according to claim 2, characterized in that: The spraying member (2) comprises a circulation pump (23) fixedly connected to the bottom shell (34), the liquid inlet end of the circulation pump (23) extending to the bottom end of the cavity, and the liquid outlet end of the circulation pump (23) fixedly connected to a connecting pipe (21), one side of the connecting pipe (21) fixedly connected to a plurality of spray pipes (22), and the liquid outlet ends of the spray pipes (22) all extend to the inside of the top cover (310).

6. The absorption tower with cleaning function according to claim 3 is characterized in that: A support member (1) is arranged below the bottom shell (34), the support member (1) comprising a bottom plate (13), two support plates (12) are symmetrically fixedly connected to the top of the bottom plate (13), the bottom shell (34) is rotatably connected between the two support plates (12), a first motor (11) is fixedly connected to the support plate (12), and an output end of the first motor (11) is connected to the bottom shell (34).

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