A particulate catalyst vacuum impregnation device
By designing a combination device of rotating shaft, stirring rod and float, the problem of carrier floating during catalyst impregnation was solved, achieving complete and uniform impregnation of the carrier and improving the impregnation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHISHOU JINYUAN CATALYST CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-29
AI Technical Summary
During the catalyst impregnation process, some catalyst carriers float on the impregnation liquid, resulting in uneven impregnation and affecting the impregnation effect.
A vacuum impregnation device was designed, comprising a tank, a rotating shaft, a stirring rod, and a float. The cooperation of the rotating mechanism and the float ensures that the carrier is completely impregnated in the impregnation liquid. The buoyancy of the float and the rotating mechanism push the carrier to sink into the liquid, and the stirring action of the stirring rod improves the uniformity of impregnation.
Complete impregnation of the catalyst support was achieved, improving the uniformity and efficiency of impregnation and ensuring full contact between the support and the impregnation solution.
Smart Images
Figure CN224293285U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of catalyst processing technology, and in particular to a vacuum impregnation device for particulate catalysts. Background Technology
[0002] Catalyst impregnation is a commonly used method for preparing catalysts. By immersing the support in an impregnation solution containing active components (such as metal salt solutions), the active components are attached to the surface of the support through physical adsorption, chemical adsorption, or ion exchange. Then, after subsequent treatments such as drying and calcination, the active components are transformed into a catalytically active form and firmly loaded onto the support.
[0003] Chinese patent CN207929221U discloses a vacuum impregnation device for solid particulate catalysts. By placing the impregnation container in a vacuum chamber, it solves the problem of environmental pollution caused by the volatilization of the impregnation liquid. However, during the impregnation process, some catalyst carriers float on the impregnation liquid, which prevents the carriers from being fully impregnated in the impregnation liquid and affects the uniformity of impregnation. Utility Model Content
[0004] The purpose of this invention is to provide a vacuum impregnation device for particulate catalysts, which ensures that the carrier can be completely impregnated in the impregnation liquid and improves the uniformity of impregnation.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: It includes a tank body, a feed pipe connected to the top of the tank body, and a discharge pipe connected to the bottom of the tank body. A vacuum pump is installed at the top of the tank body. A rotating shaft is rotatably installed inside the tank body. A drive motor for driving the rotating shaft is installed at the top of the tank body. Several first stirring rods are horizontally installed at the bottom of the rotating shaft. A fan-shaped float is movably installed inside the tank body. The rotating shaft movably passes through the float. A rotating mechanism for driving the float to rotate is installed inside the tank body.
[0006] A further feature of this invention is that the rotating mechanism includes a second stirring rod vertically mounted on the first stirring rod, with the top of the second stirring rod movably passing through the float.
[0007] A further feature of this invention is that the float includes a first float plate and a second float plate located at the top of the first float plate, the bottom end of the second float plate is fixedly connected to the top end of the first float plate, and the cross-sectional area of the top end of the first float plate is greater than the cross-sectional area of the bottom end of the first float plate.
[0008] A further feature of this invention is that the cross-sectional area of the top end of the second float is smaller than the cross-sectional area of the bottom end of the second float.
[0009] A further feature of this invention is that the number of floats is two, and the two floats are symmetrically arranged on the rotating shaft.
[0010] A further feature of this invention is that the central angle of the float is not less than 45°.
[0011] A further feature of this invention is that the central angle of the float is not greater than 90°.
[0012] A further feature of this invention is that a plurality of third stirring rods are vertically arranged on the first stirring rod, and the horizontal plane at the top of the third stirring rod is lower than the horizontal plane at the top of the second stirring rod.
[0013] A further feature of this invention is that a scraper is horizontally provided at the bottom end of the first stirring shaft, and the scraper is movably attached to the bottom of the tank.
[0014] The beneficial effects of this utility model are:
[0015] 1. By setting up a float plate and a rotating mechanism, when the catalyst needs to be impregnated, first open the valve of the feed pipe to add the impregnation liquid and carrier into the tank. Then close the feed pipe, turn on the vacuum pump and drive motor. The vacuum pump evacuates the tank to prevent the impregnation liquid from evaporating. The drive motor drives the rotating shaft and the first stirring rod to rotate, stirring the carrier and impregnation liquid. At the same time, the rotating mechanism is turned on, and the float floats on the impregnation liquid under the action of buoyancy. The rotating mechanism drives the float to rotate, so that the float pushes the carrier floating on the impregnation liquid into the impregnation liquid during the rotation, so that the carrier can fully contact the impregnation liquid and improve the uniformity of carrier impregnation. At the same time, the float is set in a fan shape, so that the float can move and fit against the inner wall of the tank, so that the float can push all the carrier floating on the impregnation liquid to the bottom of the float plate during the rotation, so that the carrier can be completely impregnated in the impregnation liquid.
[0016] 2. By setting a first float plate and a second float plate, the float block is divided into two parts: a first float plate and a second float plate. The first float plate is wider at the top and narrower at the bottom, which creates two inclined surfaces at the bottom of the first float block. During the rotation of the first float block, the inclined surfaces at the bottom of the first float block push the carrier floating on the impregnation liquid downwards and sink into the impregnation liquid, thereby further ensuring that the float block can push the carrier into the impregnation liquid and improve the uniformity of carrier impregnation. At the same time, the second float plate is narrower at the top and wider at the bottom, which allows the carrier added from the feed pipe that falls onto the second float plate to roll down from the inclined surfaces on both sides of the second float plate into the impregnation liquid, thereby preventing the carrier from staying on the second float plate and affecting the contact between the carrier and the impregnation liquid. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of an embodiment of a particulate catalyst vacuum impregnation device according to the present invention;
[0019] Figure 2 This is a partial cross-sectional structural schematic diagram of an embodiment of a particulate catalyst vacuum impregnation device according to the present invention;
[0020] Figure 3 yes Figure 2 An enlarged diagram of A in the diagram.
[0021] In the diagram, 1 is the tank body; 2 is the feed pipe; 3 is the discharge pipe; 4 is the vacuum pump; 5 is the rotating shaft; 6 is the drive motor; 7 is the first stirring rod; 8 is the float; 8a is the first float plate; 8b is the second float plate; 9 is the second stirring rod; 10 is the third stirring rod; and 11 is the scraper. Detailed Implementation
[0022] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0023] This invention provides a vacuum impregnation device for particulate catalysts, such as... Figures 1 to 3 As shown, the device includes a tank body 1, a feed pipe 2 connected to the top of the tank body 1, and a discharge pipe 3 connected to the bottom of the tank body 1. A vacuum pump 4 is installed at the top of the tank body 1. A rotating shaft 5 is rotatably installed inside the tank body 1. A drive motor 6 for driving the rotating shaft 5 is installed at the top of the tank body 1. Several first stirring rods 7 are horizontally installed at the bottom of the rotating shaft 5. A fan-shaped float 8 is movably installed inside the tank body 1. The rotating shaft 5 moves through the float 8. A rotating mechanism for driving the float 8 to rotate is installed inside the tank body 1.
[0024] Furthermore, the rotating mechanism includes a second stirring rod 9 vertically mounted on the first stirring rod 7, with the top of the second stirring rod 9 movably passing through the float 8.
[0025] Furthermore, the float 8 includes a first float plate 8a and a second float plate 8b located at the top of the first float plate 8a. The bottom end of the second float plate 8b is fixedly connected to the top end of the first float plate 8a, and the cross-sectional area of the top end of the first float plate 8a is greater than the cross-sectional area of the bottom end of the first float plate 8a.
[0026] Furthermore, the cross-sectional area of the top end of the second float plate 8b is smaller than the cross-sectional area of the bottom end of the second float plate 8b.
[0027] Furthermore, the number of floats 8 is 2, and the two floats 8 are symmetrically arranged on the rotating shaft 5.
[0028] Furthermore, the central angle of the float 8 is not less than 45°.
[0029] Furthermore, the central angle of the float 8 is no greater than 90°.
[0030] Furthermore, a plurality of third stirring rods 10 are vertically arranged on the first stirring rod 7, and the horizontal plane at the top of the third stirring rod 10 is lower than the horizontal plane at the top of the second stirring rod 9.
[0031] Furthermore, a scraper 11 is horizontally provided at the bottom end of the first stirring shaft, and the scraper 11 is movably attached to the bottom of the tank body 1.
[0032] When the catalyst needs to be impregnated, firstly, open the valve of the feed pipe 2, and add the impregnation liquid and carrier into the tank 1 through the feed pipe 2. Then, close the feed pipe 2. During the process of adding the impregnation liquid, the float 8 will rise along the rotating shaft 5 under the action of buoyancy as the impregnation liquid level rises. Then, turn on the vacuum pump 4 (it should be noted that the vacuum pump 4 is prior art, so not describing it in detail will not affect the understanding of the actual scope of the technology protected by this solution by those skilled in the art) and the drive motor 6. The vacuum pump 4 will evacuate the tank 1, and the drive motor 6 will drive the rotating shaft 5, the first stirring rod 7, etc. to rotate. The stirring rod 9 stirs the carrier and the impregnation liquid. At the same time, the second stirring rod 9 drives the two floats 8 to rotate synchronously. The floats 8 float on the impregnation liquid under the action of buoyancy. During the rotation of the floats 8 driven by the second stirring rod 9, the carrier floating on the impregnation liquid is pushed into the impregnation liquid by the inclined surface at the bottom of the first float plate 8a. This allows the carrier to fully contact the impregnation liquid and improves the uniformity of the carrier impregnation. At the same time, the floats 8 are set in a fan shape so that the floats 8 can move and fit against the inner wall of the tank 1. This ensures that the floats 8 can push all the carrier floating on the impregnation liquid into the bottom of the float plate during the rotation, so that the carrier can be completely impregnated in the impregnation liquid.
[0033] By setting a first float plate 8a, a second float plate 8b, etc., the float block 8 is divided into two parts: the first float plate 8a and the second float plate 8b. The first float plate 8a is wider at the top and narrower at the bottom, so that the bottom of the first float block 8 has two inclined surfaces. During the rotation of the first float block 8, the inclined surfaces at the bottom of the first float block 8 push the carrier floating on the impregnation liquid downward and sink into the impregnation liquid, thereby further ensuring that the float block 8 can push the carrier into the impregnation liquid and improve the uniformity of carrier impregnation. At the same time, the second float plate 8b is narrower at the top and wider at the bottom, so that the carrier added from the feed pipe 2 that falls onto the second float plate 8b can roll down from the inclined surfaces on both sides of the second float plate 8b into the impregnation liquid, thereby preventing the carrier from staying on the second float plate 8b and affecting the contact between the carrier and the impregnation liquid.
[0034] By setting two floats 8, with the central angle of the floats 8 being no less than 45° and no more than 90°, the efficiency of the floats 8 in propelling the floating carrier can be increased. At the same time, by controlling the central angle of the floats 8 between 45° and 90°, it is possible to avoid the floats 8 being too small, which would result in too small a contact area between the floats 8 and the impregnation liquid, thus affecting the efficiency of the floats 8 in propelling the carrier to immerse. It is also possible to avoid the floats 8 having too large a surface area, which would cause too much carrier to remain on the top of the floats 8, thus affecting the feeding process of the carrier and the impregnation liquid.
[0035] By setting a third stirring rod 10, the impregnation solution is further stirred, thereby improving the impregnation efficiency of the carrier.
[0036] By setting up a scraper 11, the scraper 11 can stir the carrier that has settled at the bottom of the impregnation liquid, thereby improving the impregnation efficiency of the carrier.
[0037] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0038] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.
Claims
1. A vacuum impregnation device for particulate catalysts, characterized in that: The device includes a tank (1), a feed pipe (2) connected to the top of the tank (1), and a discharge pipe (3) connected to the bottom of the tank (1). A vacuum pump (4) is provided at the top of the tank (1). A rotating shaft (5) is rotatably provided inside the tank (1). A drive motor (6) for driving the rotating shaft (5) is provided at the top of the tank (1). Several first stirring rods (7) are horizontally provided at the bottom of the rotating shaft (5). A fan-shaped float (8) is movably provided inside the tank (1). The rotating shaft (5) moves through the float (8). A rotating mechanism for driving the float (8) to rotate is provided inside the tank (1).
2. The vacuum impregnation device for particulate catalyst according to claim 1, characterized in that: The rotating mechanism includes a second stirring rod (9) vertically mounted on the first stirring rod (7), with the top of the second stirring rod (9) moving through the float (8).
3. The particulate catalyst vacuum impregnation device according to claim 2, characterized in that: The float (8) includes a first float plate (8a) and a second float plate (8b) located at the top of the first float plate (8a). The bottom end of the second float plate (8b) is fixedly connected to the top end of the first float plate (8a). The cross-sectional area of the top end of the first float plate (8a) is greater than the cross-sectional area of the bottom end of the first float plate (8a).
4. The particulate catalyst vacuum impregnation device according to claim 3, characterized in that: The cross-sectional area of the top of the second float (8b) is smaller than the cross-sectional area of the bottom of the second float (8b).
5. The particulate catalyst vacuum impregnation device according to claim 1, characterized in that: The number of the floats (8) is 2, and the two floats (8) are symmetrically arranged on the rotating shaft (5).
6. The particulate catalyst vacuum impregnation device according to claim 5, characterized in that: The central angle of the float (8) is not less than 45°.
7. The particulate catalyst vacuum impregnation device according to claim 6, characterized in that: The central angle of the float (8) is no greater than 90°.
8. The particulate catalyst vacuum impregnation device according to claim 2, characterized in that: A plurality of third stirring rods (10) are vertically arranged on the first stirring rod (7), and the top of the third stirring rod (10) is at a lower level than the top of the second stirring rod (9).
9. The particulate catalyst vacuum impregnation device according to claim 1, characterized in that: A scraper (11) is horizontally arranged at the bottom end of the rotating shaft (5), and the scraper (11) can be movably attached to the bottom of the tank (1).