Impregnating, liquid returning and drying integrated equipment

Abstract

The utility model relates to the technical field of dipping equipment, in particular to dipping, liquid returning and drying integrated equipment. The equipment comprises a dipping assembly, a purging return liquid drying assembly, a lifting transfer assembly and a hanging basket, the dipping assembly comprises a dipping tank and an ultrasonic device arranged in the dipping tank; the lifting transfer assembly is arranged above the dipping tank and is detachably connected with the hanging basket; the purging liquid return drying assembly comprises a purging mechanism, a heater and a liquid return mechanism; the hanging basket is transferred into the purging mechanism through the lifting transfer assembly, and impregnation liquid in the porous carrier is purged out through the purging mechanism; the purging mechanism is communicated with the dipping tank through the liquid return mechanism; and the heater is connected with the purging mechanism. The device can solve the problems that in the prior art, impregnation is not uniform, and redundant impregnation liquid is not easy to remove and recycle from the porous carrier.

Description

Technical Field

[0001] This utility model relates to the field of impregnation equipment technology, specifically to an integrated impregnation, return, and drying equipment. Background Technology

[0002] The impregnation equipment used when impregnating a porous support with a catalyst active component in an impregnation solution has two main problems: first, uneven impregnation; and second, difficulty in removing and recovering excess impregnation solution from the porous support.

[0003] Specifically, regarding uneven impregnation, static impregnation easily leads to differences in the distribution of active components on the surface of the porous carrier and in the internal pores of the porous carrier, i.e., uneven loading of active components; especially for honeycomb carriers with larger mesh counts, the pores are smaller and air bubbles are more likely to exist in the pores, making it easier for the impregnation solution to fail to make uniform contact with the internal pores of the honeycomb carrier during static impregnation.

[0004] The issue of removing and recovering excess impregnation liquid from porous carriers mainly applies to monolithic honeycomb catalysts. Honeycomb carriers have abundant internal pores, and after impregnation, it is often necessary to purge the impregnation liquid inside the pores to prevent clogging. However, existing impregnation equipment lacks a purging function, making it difficult to remove and recover excess impregnation liquid. This not only leads to waste of impregnation liquid, but also makes the pores more prone to clogging after drying, seriously affecting the use of the catalyst.

[0005] In addition, the excess impregnation liquid on the porous carrier after impregnation is not easy to remove and recover, making it easy to get dusty during the transfer to the drying equipment, clogging the pores, and also easy to get impregnation liquid on the drying equipment, which requires cleaning of the drying equipment and may even cause corrosion.

[0006] In summary, there is a need to develop an integrated impregnation, liquid return, and drying device to solve the problems of uneven impregnation and difficulty in removing and recovering excess impregnation liquid from porous carriers in existing technologies. Utility Model Content

[0007] The purpose of this utility model is to provide an integrated equipment for impregnation, liquid return, and drying. The specific technical solution is as follows:

[0008] An integrated impregnation and liquid return drying device includes an impregnation assembly, a purging and liquid return drying assembly, a lifting and transfer assembly, and a suspended basket;

[0009] The impregnation assembly includes an impregnation tank and an ultrasonic device; the ultrasonic device is disposed inside the impregnation tank; the impregnation tank is filled with impregnation liquid; the lifting and transfer assembly is disposed above the impregnation tank and is detachably connected to the basket, for driving the basket to descend into the impregnation liquid in the impregnation tank; a porous carrier is disposed inside the basket;

[0010] The purging and return drying assembly includes a purging mechanism, a heater, and a return mechanism; the basket is transferred to the purging mechanism via the lifting and transfer assembly, and the impregnation liquid in the porous carrier is purged out by the purging mechanism; the purging mechanism is connected to the impregnation tank via the return mechanism; the heater is connected to the purging mechanism.

[0011] Optionally, the purging mechanism includes a purging chamber, a cover plate, a purging fan, a ventilation duct, and a lifting mechanism; the cover plate is closable to the purging chamber via the lifting mechanism; a ventilation component communicating with the purging chamber is provided on the cover plate; one end of the ventilation duct is connected to the air outlet of the purging fan, and the other end is connected to the ventilation component.

[0012] Optionally, the ventilation component includes a ventilation cavity and a plurality of ventilation ducts; one side of the ventilation cavity is connected to the ventilation duct, and the other side is connected to each of the ventilation ducts; each of the ventilation ducts is evenly distributed on the cover plate and is connected to the purge chamber.

[0013] Optionally, the ventilation duct includes a first rigid pipe, a second rigid pipe, and a corrugated flexible pipe; one end of the first rigid pipe is connected to the air outlet of the blower, and the other end is connected to the corrugated flexible pipe; one end of the second rigid pipe is connected to the end of the corrugated flexible pipe away from the first rigid pipe, and the other end is connected to the ventilation cavity.

[0014] Optionally, the heater is disposed on the first rigid tube.

[0015] Optionally, the liquid return mechanism includes a recovery tank, a first return pipe, and a second return pipe; the recovery tank is located below the purge chamber, and has an inlet and an outlet thereon; one end of the first return pipe is connected to the bottom of the purge chamber, and the other end is connected to the inlet; one end of the second return pipe is connected to the outlet, and the other end is connected to the impregnation tank; a valve is provided on the second return pipe.

[0016] Optionally, the liquid return mechanism further includes a demister screen; the demister screen is disposed inside the recovery tank and located above the liquid inlet.

[0017] Optionally, the return mechanism further includes a safety line; the safety line is connected to the top of the recovery tank, and the other end is connected to the air.

[0018] Optionally, the lifting and transfer assembly includes a first lifting drive, a first chain, and a slide rail; the slide rail is horizontally disposed above the immersion tank and the purging chamber; the first lifting drive is slidably disposed on the slide rail, and its output end is connected to the first chain; the end of the first chain away from the first lifting drive is detachably connected to the basket.

[0019] Three to five first hooks are provided on the suspended basket, and each first hook is detachably connected to the first chain.

[0020] A drain pipe is installed at the bottom of the impregnation tank; a drain valve is installed on the drain pipe.

[0021] Optionally, the lifting mechanism includes a second lifting drive component and a second chain; the second lifting drive component is slidably mounted on the slide rail, and its output end is connected to the second chain; the end of the second chain away from the second lifting drive component is detachably connected to the cover plate.

[0022] Three to five second hooks are provided on the cover plate, and each second hook is detachably connected to the second chain.

[0023] The application of the technical solution of this utility model has at least the following beneficial effects:

[0024] (1) The present invention provides an integrated impregnation, return, and drying equipment that can solve the problems of uneven impregnation and difficulty in removing and recovering excess impregnation liquid from the porous carrier in the prior art. Specifically, the present invention first uses a lifting and transfer assembly to drive the basket down into the impregnation liquid in the impregnation tank, and uses an ultrasonic device to ensure that the porous carrier in the basket fully and evenly absorbs the impregnation liquid; secondly, after the porous carrier in the basket has completed impregnation, the lifting and transfer assembly is used to transfer the basket to the blowing mechanism, and the blowing mechanism blows out the excess impregnation liquid in the porous carrier pores; then, the excess impregnation liquid is returned to the impregnation tank through the return mechanism; finally, the porous carrier is dried in the blowing chamber by a combination of a blowing fan and a heater, avoiding dust accumulation, blockage of pores, or even corrosion of the drying equipment during the process of the porous carrier being directly transferred from the impregnation tank to the drying equipment.

[0025] (2) The ventilation component provided by this utility model adopts a combination structure of ventilation cavity and multiple ventilation channels, which facilitates the uniform blowing operation of porous carrier in the blowing room under the action of blowing fan and ventilation pipeline, that is, uniformly blowing out excess impregnation liquid in the porous carrier channels, improving blowing efficiency, and ensuring complete blowing.

[0026] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of an integrated impregnation and liquid return drying device in one of the embodiments;

[0029] Figure 2 This is a structural diagram of the combined cover plate and ventilation ducts;

[0030] Among them, 1. Impregnation assembly, 1.1 Impregnation tank, 1.2 Ultrasonic device, 2. Purge return liquid drying assembly, 2.1 Heater, 2.2 Purge chamber, 2.3 Cover plate, 2.3.1 Ventilation component, 2.3.1.1 Ventilation cavity, 2.3.1.2 Ventilation duct, 2.4 Purge fan, 2.5 Ventilation pipeline, 2.6 Lifting mechanism, 2.6.1 Second lifting drive component, 2.6.2 Second chain, 2.7 Recovery tank, 2.8 Defogging screen, 3. Lifting transfer assembly, 3.1 First lifting drive component, 3.2 First chain, 3.3 Slide rail, 4. Hanging basket. Detailed Implementation

[0031] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0032] Example:

[0033] See Figures 1-2 An integrated impregnation and liquid return drying device includes an impregnation component 1, a purging and liquid return drying component 2, a lifting and transfer component 3, and a basket 4 (500 mm in length and width, and 650 mm in height).

[0034] The impregnation assembly 1 includes an impregnation tank 1.1 and an ultrasonic device 1.2; the ultrasonic device 1.2 (ultrasonic frequency of 40000Hz, power of 4kW) is installed in the impregnation tank 1.1 (length and width are both 600mm, height is 700mm); the impregnation tank 1.1 is filled with impregnation liquid; the lifting and transfer assembly 3 is installed above the impregnation tank 1.1 and is detachably connected to the basket 4, for driving the basket 4 to descend into the impregnation liquid in the impregnation tank 1.1; one or more porous carriers are installed in the basket 4; when multiple porous carriers are installed, a grid is used to separate each two adjacent porous carriers, on the one hand to facilitate the impregnation liquid to penetrate into the channels of each porous carrier layer, and on the other hand to facilitate the subsequent blowing out of excess impregnation liquid in the channels of each porous carrier layer;

[0035] The purging and liquid return drying assembly 2 includes a purging mechanism, a heater 2.1, and a liquid return mechanism; the basket 4 is transferred to the purging mechanism via the lifting and transfer assembly 3, and the purging mechanism purges out the impregnation liquid in the porous carrier; the purging mechanism is connected to the impregnation tank 1.1 via the liquid return mechanism; the heater 2.1 is connected to the purging mechanism and is used to provide heat to the purging mechanism after the purging operation is completed to form hot air to purge and dry the porous carrier.

[0036] The purging mechanism includes a purging chamber 2.2, a cover plate 2.3, and a purging fan 2.4 (rated air volume of 1000 m³ / h). 3 / h, using a variable frequency fan), ventilation duct 2.5 and lifting mechanism 2.6; the cover plate 2.3 is connected to the purge chamber 2.2 through the lifting mechanism 2.6; specifically, after the porous carrier in the basket 4 has been impregnated, the lifting mechanism 2.6 drives the cover plate 2.3 to open the purge chamber 2.2, and the lifting transfer component 3 is used to transfer the basket 4 into the purge chamber 2.2. Subsequently, the lifting mechanism 2.6 drives the cover plate 2.3 to close the purge chamber 2.2; a ventilation component 2.3.1 communicating with the purge chamber 2.2 is provided on the cover plate 2.3; one end of the ventilation duct 2.5 is connected to the air outlet of the purge fan 2.4, and the other end is connected to the ventilation component 2.3.1. The purge operation of the porous carrier in the purge chamber 2.2 is completed by the combined operation of the purge fan 2.4, ventilation duct 2.5 and ventilation component 2.3.1, that is, the excess impregnation liquid in the pores of the porous carrier is blown out.

[0037] See Figure 2The ventilation component 2.3.1 includes a ventilation cavity 2.3.1.1 and multiple ventilation channels 2.3.1.2. One side of the ventilation cavity 2.3.1.1 is connected to the ventilation duct 2.5, and the other side is connected to each of the ventilation channels 2.3.1.2. Each of the ventilation channels 2.3.1.2 is evenly distributed on the cover plate 2.3 and is connected to the purge chamber 2.2. The ventilation component 2.3.1 adopts a combined structure of ventilation cavity 2.3.1.1 and multiple ventilation channels 2.3.1.2, which facilitates the uniform purging operation of the porous carrier in the purge chamber 2.2, that is, uniformly purging out excess impregnating liquid in the pores of the porous carrier, improving purging efficiency, and ensuring complete purging.

[0038] The ventilation duct 2.5 includes a first rigid pipe, a second rigid pipe, and a corrugated flexible hose. One end of the first rigid pipe is connected to the air outlet of the blower 2.4, and the other end is connected to the corrugated flexible hose. One end of the second rigid pipe is connected to the end of the corrugated flexible hose away from the first rigid pipe, and the other end is connected to the ventilation cavity 2.3.1.1. The use of a corrugated flexible hose facilitates the movement of the lifting mechanism 2.6 when moving the cover plate 2.3, making it easier to open and close the cover plate 2.3.

[0039] The heater 2.1 (specifically an electric heater 2.1 with a power of 40kW and adjustable frequency) is installed on the first rigid tube to heat the first rigid tube and preheat the air blown out by the purge blower 2.4 through the first rigid tube.

[0040] The liquid return mechanism includes a recovery tank 2.7 (50L volume, 300mm inner diameter), a first return pipe (50mm inner diameter), and a second return pipe (50mm inner diameter). The recovery tank 2.7 is located below the purge chamber 2.2, with an inlet on its side wall and an outlet at its bottom. One end of the first return pipe is connected to the bottom of the purge chamber 2.2, and the other end is connected to the inlet. One end of the second return pipe is connected to the outlet, and the other end is connected to the impregnation tank 1.1. A valve is installed on the second return pipe. After the excess impregnation liquid on the porous carrier has completely flowed into the recovery tank 2.7, the valve is opened, and the impregnation liquid flows back into the impregnation tank 1.1.

[0041] The liquid return mechanism also includes a demister 2.8 (a stainless steel wire mesh with a diameter of φ = 0.2 mm and a mesh size of 4 × 5 mm); the demister 2.8 is installed inside the recovery tank 2.7 and located above the liquid inlet to prevent the purge air from carrying back the impregnating liquid mist out of the recovery tank.

[0042] The liquid return mechanism also includes a safety pipeline; the safety pipeline is connected to the top of the recovery tank 2.7, and the other end is connected to the air to connect with the external atmospheric pressure and ensure the air pressure balance inside the recovery tank 2.7.

[0043] The lifting and transfer assembly 3 includes a first lifting drive 3.1 (specifically an electric hoist), a first chain 3.2, and a slide rail 3.3; the slide rail 3.3 is horizontally arranged above the immersion tank 1.1 and the blowing chamber 2.2; the first lifting drive 3.1 is slidably arranged on the slide rail 3.3, and its output end is connected to the first chain 3.2; the end of the first chain 3.2 away from the first lifting drive 3.1 is detachably connected to the basket 4;

[0044] Three to five (specifically three) first hooks (not shown in the figure) are provided on the suspended basket 4. Each first hook is detachably connected to the first chain 3.2. This facilitates the removal of the suspended basket 4 and prevents the suspended basket 4 from swaying during lifting and transfer, thereby improving operational safety.

[0045] A drain pipe is provided at the bottom of the impregnation tank 1.1; a drain valve is provided on the drain pipe to facilitate the replacement of the impregnation solution.

[0046] The lifting mechanism 2.6 includes a second lifting drive component 2.6.1 (specifically an electric hoist) and a second chain 2.6.2; the second lifting drive component 2.6.1 is slidably mounted on the slide rail 3.3, and its output end is connected to the second chain 2.6.2; the end of the second chain 2.6.2 away from the second lifting drive component 2.6.1 is detachably connected to the cover plate 2.3;

[0047] Three to five (specifically three) second hooks (not shown in the figure) are provided on the cover plate 2.3. Each second hook is detachably connected to the second chain 2.6.2. This facilitates the removal of the cover plate 2.3 and prevents the cover plate 2.3 from shaking during lifting and lowering, thereby improving operational safety and closing efficiency.

[0048] The operation process of the integrated impregnation, liquid return, and drying equipment is as follows:

[0049] First, the lifting and transfer component 3 drives the basket 4 to descend into the impregnation liquid in the impregnation tank 1.1. The ultrasonic device 1.2 ensures that the impregnation liquid is fully and uniformly adsorbed in the porous carrier channels within the basket 4. The impregnation liquid contains catalyst active components, and the active components are uniformly loaded onto the surface of the porous carrier and the inner wall of its channels through ultrasonic impregnation, thus avoiding the problem of uneven loading of active components on the surface of the porous carrier and the inner wall of its channels caused by static impregnation.

[0050] Secondly, after the porous carrier in the basket 4 has been impregnated, the lifting mechanism 2.6 drives the cover plate 2.3 to open the purge chamber 2.2, and the basket 4 is transferred to the purge chamber 2.2 by the lifting transfer assembly 3. Subsequently, the lifting mechanism 2.6 drives the cover plate 2.3 to close the purge chamber 2.2, and the excess impregnation liquid in the porous carrier pores is blown out by the combination of the purge fan 2.4, ventilation pipe 2.5, ventilation cavity 2.3.1.1 and multiple ventilation channels 2.3.1.2.

[0051] Then, the excess impregnation liquid is returned to the impregnation tank 1.1 through the liquid return mechanism;

[0052] Finally, the porous carrier is dried in the purge chamber 2.2 by a combination of purge fan 2.4 and heater 2.1.

[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An impregnation back-drying integrated device, characterized by, The impregnation assembly (1), the backflow liquid drying assembly (2), the lifting transfer assembly (3) and the basket (4) are included. The impregnation assembly (1) includes an impregnation tank (1.1) and an ultrasonic device (1.2); the ultrasonic device (1.2) is arranged in the impregnation tank (1.1); the impregnation tank (1.1) is filled with impregnation liquid; the lifting transfer assembly (3) is arranged above the impregnation tank (1.1) and detachably connected with the basket (4) and used for driving the basket (4) to descend into the impregnation liquid in the impregnation tank (1.1); a plurality of porous carriers are arranged in the basket (4); The backflow liquid drying assembly (2) includes a blowing mechanism, a heater (2.1) and a backflow mechanism; the lifting transfer assembly (3) can transfer the basket (4) to the blowing mechanism; the blowing mechanism can blow out the impregnation liquid in the porous carriers; the blowing mechanism is communicated with the impregnation tank (1.1) through the backflow mechanism; and the heater (2.1) is connected with the blowing mechanism.

2. The integrated impregnation and flash-off device according to claim 1, wherein The blowing mechanism includes a blowing chamber (2.2), a cover plate (2.3), a blowing fan (2.4), a ventilation pipeline (2.5) and a lifting mechanism (2.6); the cover plate (2.3) is openably and closably connected with the blowing chamber (2.2) through the lifting mechanism (2.6); a ventilation component (2.3.1) communicated with the blowing chamber (2.2) is arranged on the cover plate (2.3); one end of the ventilation pipeline (2.5) is communicated with an air outlet hole of the blowing fan (2.4), and the other end is communicated with the ventilation component (2.3.1).

3. The integrated impregnation and flash-off device according to claim 2, wherein The ventilation component (2.3.1) includes a ventilation cavity (2.3.1.1) and a plurality of ventilation channels (2.3.1.2); one side of the ventilation cavity (2.3.1.1) is communicated with the ventilation pipeline (2.5), and the other side is communicated with each ventilation channel (2.3.1.2); each ventilation channel (2.3.1.2) is uniformly arranged on the cover plate (2.3) and communicated with the blowing chamber (2.2).

4. The integrated impregnation and flash-drying apparatus according to claim 3, wherein The ventilation pipeline (2.5) includes a first hard pipe, a second hard pipe and a corrugated flexible pipe; one end of the first hard pipe is communicated with the air outlet hole of the blowing fan (2.4), and the other end is communicated with the corrugated flexible pipe; one end of the second hard pipe is communicated with the corrugated flexible pipe away from the first hard pipe, and the other end is communicated with the ventilation cavity (2.3.1.1).

5. The integrated impregnation and flash-drying apparatus according to claim 4, wherein The heater (2.1) is arranged on the first hard pipe.

6. The integrated impregnation and blowdown drying apparatus according to any one of claims 2 to 5, wherein The backflow mechanism includes a recovery tank (2.7), a first backflow pipeline and a second backflow pipeline; the recovery tank (2.7) is arranged below the blowing chamber (2.2) and has a liquid inlet and a liquid outlet arranged thereon; one end of the first backflow pipeline is communicated with the bottom of the blowing chamber (2.2), and the other end is communicated with the liquid inlet; one end of the second backflow pipeline is communicated with the liquid outlet, and the other end is communicated with the impregnation tank (1.1); a valve is arranged on the second backflow pipeline.

7. The integrated impregnation and flash-drying apparatus according to claim 6, wherein The liquid return mechanism further comprises a defoaming net (2.8); the defoaming net (2.8) is arranged in the recovery tank (2.7) and above the liquid inlet.

8. The integrated backwash-drying apparatus of claim 6, wherein, The liquid return mechanism further comprises a safety pipeline; one end of the safety pipeline is communicated with the top of the recovery tank (2.7) and the other end is communicated with air.

9. The integrated backwash drying apparatus of claim 6, wherein, The lifting transfer assembly (3) comprises a first lifting driving element (3.1), a first chain (3.2) and a slide rail (3.3); the slide rail (3.3) is horizontally arranged above the immersion tank (1.1) and the purge chamber (2.2); the first lifting driving element (3.1) is slidably arranged on the slide rail (3.3) and its output end is connected with the first chain (3.2); one end of the first chain (3.2) away from the first lifting driving element (3.1) is detachably connected with the hanging basket (4); 3-5 first hooks are arranged on the hanging basket (4) and each of the first hooks is detachably connected with the first chain (3.2); A liquid discharge pipeline is arranged at the bottom of the immersion tank (1.1) and a liquid discharge valve is arranged on the liquid discharge pipeline.

10. The integrated backwash and dry out apparatus of claim 9, wherein, The lifting mechanism (2.6) comprises a second lifting driving element (2.6.1) and a second chain (2.6.2); the second lifting driving element (2.6.1) is slidably arranged on the slide rail (3.3) and its output end is connected with the second chain (2.6.2); one end of the second chain (2.6.2) away from the second lifting driving element (2.6.1) is detachably connected with the cover plate (2.3); 3-5 second hooks are arranged on the cover plate (2.3) and each of the second hooks is detachably connected with the second chain (2.6.2).

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