Catalyst dipping device

Abstract

The utility model provides a catalyst dipping device which comprises a liquid receiving tank, a dipping tank, a catalyst mold and a sprayer, the liquid receiving tank and the catalyst mold are stacked from bottom to top and are in sealed connection through a sealing unit, and a dipping spraying sealing cover is arranged at the top of the catalyst mold. The spraying device is arranged in the dipping spraying sealing cover, a pressing plate is arranged on the dipping spraying sealing cover, the liquid receiving tank is communicated with the dipping tank through a dipping liquid recycling pipeline, the spraying device is communicated with the dipping tank through a dipping liquid conveying pipeline, a valve and a first conveying pump are arranged on the dipping liquid recycling pipeline, and a valve and a second conveying pump are arranged on the dipping liquid conveying pipeline; the sealing unit comprises a bearing platform and a sealing connecting frame, the sealing connecting frame is located on the bearing platform, a guide channel communicated with the liquid receiving groove is formed in the sealing connecting frame, and sealing pieces are arranged between the catalyst mold and the sealing connecting frame and between the dipping spraying sealing cover and the catalyst mold.

Description

Technical Field

[0001] The utility model relates to a catalyst impregnation device. Background Art

[0002] As an energy source, coal has made great contributions to the development of the national economy, but at the same time, its development and utilization process has also brought about a series of environmental pollution problems, endangering the ecological balance and human survival.

[0003] NOx is one of the main culprits of air pollution. When the substance reaches a certain concentration, it will pose a threat and harm to human health. Nitrogen oxides will eventually transform into nitric acid and nitrates when combined with water in the air, and fall from the air to the ground with precipitation and dust. Nitric acid is one of the important causes of acid rain. It can produce photochemical smog pollution with other pollutants under certain conditions. It seriously damages the ecological environment and seriously harms the human respiratory system.

[0004] At present, the denitration catalysts used in the denitration projects of domestic power plants are mainly divided into three types: honeycomb, plate and corrugated plate. The catalyst impregnation process is an important process in catalyst production, mainly for attaching catalyst active components with denitration efficiency. In the absence of special equipment for manual impregnation, the amount of catalyst active substances attached after impregnation is uneven, the product qualification rate is low, the system is not tightly sealed, the volatile impregnation liquid causes harm to the human body, and the manual handling labor is large, and the enterprise production capacity is low. Summary of the invention

[0005] The problem to be solved by the utility model is to provide a catalyst impregnation device, which overcomes the shortcomings of the prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a catalyst impregnation device, including a liquid receiving tank, an impregnation tank, a catalyst mold and a sprayer, the liquid receiving tank and the catalyst mold are stacked from bottom to top, the liquid receiving tank and the catalyst mold are sealed and connected through a sealing unit, the top of the catalyst mold is provided with an impregnation spray sealing cover, the sprayer is arranged in the impregnation spray sealing cover, the impregnation spray sealing cover is provided with a pressing plate, the liquid receiving tank is connected with the impregnation tank through an impregnation liquid recovery pipeline, the sprayer is connected with the impregnation tank through an impregnation liquid delivery pipeline, the impregnation liquid recovery pipeline is provided with a valve and a first delivery pump, and the impregnation liquid delivery pipeline is provided with a valve and a second delivery pump;

[0007] The sealing unit includes a base and a sealing connection frame, wherein the sealing connection frame is located on the base and has a guide channel connected to the liquid receiving tank. There are seals between the catalyst mold and the sealing connection frame and between the immersion spray sealing cover and the catalyst mold.

[0008] Optionally, the seal between the catalyst mold and the sealing connection frame is a sealing airbag located on the inner wall of the sealing connection frame, the side of the sealing connection frame has an air inlet hole connected to the sealing airbag, the sealing airbag is arranged near the top surface of the sealing connection frame, and when the sealing airbag is inflated, it can abut against the bottom of the catalyst mold, and the seal between the immersion spray sealing cover and the catalyst mold is a rubber sealing pad located on the top of the catalyst mold.

[0009] Optionally, the base has two limit clamps respectively located on both sides of the sealing connection frame, and the limit clamps are stepped plates with three parallel bending lines. The two horizontal bottom surfaces on the limit clamps are in contact with the base and the top surface of the sealing connection frame respectively, and the two vertical inner side surfaces on the limit clamps are in contact with the side surfaces of the sealing connection frame and the outer side surfaces of the catalyst mold respectively. The limit clamps are connected to the base by fixing bolts.

[0010] Optionally, the limiting fixture has a plurality of reinforcing ribs.

[0011] Optionally, the support platform has adjustment long holes corresponding one to one with the fixing bolts.

[0012] Optionally, the bottom of the catalyst mold has a rectangular plug-in frame plate that can extend into the sealed connection frame.

[0013] Optionally, it also includes a PLC and a cylinder, a sensor is arranged on the sealed connection frame, a liquid level gauge is provided in the liquid receiving tank, the cylinder applies force on the pressure plate, and the sensor, the liquid level gauge, the first delivery pump, the second delivery pump, the valve and the cylinder are all electrically connected to the PLC.

[0014] The utility model has the advantages and positive effects of: the catalyst impregnation process is completed by the device, the impregnation process is kept closed, the impregnation liquid is prevented from volatilizing into the air, the pollution to the environment is reduced, the amount of active material attached to the catalyst after impregnation is uniform, and the product qualification rate is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a specific implementation method of the utility model;

[0016] Figure 2 yes Figure 1 A schematic diagram of the structure of the catalyst mold;

[0017] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle and lower sealing connection unit and the liquid receiving tank;

[0018] Figure 4 It is a schematic diagram of the work process;

[0019] In the figure: 1. Catalyst mold; 1-1. Rectangular plug-in frame plate; 2. Impregnation spray sealing cover; 2-1. Impregnation liquid delivery pipeline; 2-2. Press plate; 3. Liquid receiving tank; 4. Impregnation tank; 5. First delivery pump; 6. Second delivery pump; 7. Support platform; 7-1. Limiting fixture; 7-2. Fixing bolt; 7-3. Adjusting long hole; 7-4. Reinforcing rib plate; 8. Sealing connection frame; 8-1. Air inlet; 8-2. Sealing airbag; 8-3. Guide channel. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the utility model. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

[0021] As shown in the figure, the utility model provides a catalyst impregnation device, including a liquid receiving tank 3, an impregnation tank 4, a catalyst mold 1 and a sprayer (not shown in the figure), the liquid receiving tank 3 and the catalyst mold 1 are stacked from bottom to top, the liquid receiving tank 3 and the catalyst mold 1 are sealed and connected through a sealing unit, the top of the catalyst mold 1 is provided with an impregnation spray sealing cover 2, the sprayer is arranged in the impregnation spray sealing cover 2, the impregnation spray sealing cover 2 is provided with a pressing plate 2-2, the liquid receiving tank 3 is connected with the impregnation tank 3 through an impregnation liquid recovery pipeline, the sprayer is connected with the impregnation tank 3 through an impregnation liquid delivery pipeline 2-1, the impregnation liquid recovery pipeline is provided with a valve and a first delivery pump 5, and the impregnation liquid delivery pipeline 2-1 is provided with a valve and a second delivery pump 6;

[0022] The sealing unit includes a base 7 and a sealing connection frame 8. The sealing connection frame 8 is located on the base 7. The sealing connection frame 8 has a guide channel 8-3 connected to the liquid receiving tank 3. A sealing airbag 8-2 is provided on the inner wall of the sealing connection frame 8 between the catalyst mold 1 and the sealing connection frame 8. The side of the sealing connection frame 8 has an air inlet 8-1 connected to the sealing airbag 8-2. The air inlet 8-1 can be connected to an external inflation device to inflate the sealing airbag 8-2. The sealing airbag 8-2 is arranged near the top surface of the sealing connection frame 8. When the sealing airbag 8-2 is inflated, it can abut against the bottom of the catalyst mold 1. A rubber sealing pad is provided between the impregnation spray sealing cover 2 and the catalyst mold 1.

[0023] The base 7 has two limit clamps 7-1 respectively located on both sides of the sealing connection frame 8. The limit clamps 7-1 are stepped plates with three parallel bending lines. The two horizontal bottom surfaces on the limit clamps 7-1 are in contact with the top surfaces of the base 7 and the sealing connection frame 8 respectively. The two vertical inner side surfaces on the limit clamps 7-1 are in contact with the side surfaces of the sealing connection frame 8 and the outer side surfaces of the catalyst mold 1 respectively. The limit clamps 7-1 and the base 7 are connected by fixing bolts 7-2.

[0024] The limiting fixture 7 has a plurality of reinforcing rib plates 7 - 4 .

[0025] The support platform 7 is provided with an adjusting long hole 7-3 corresponding to the fixing bolt 7-2 one by one, and the adjusting long hole 7-3 is used to adjust the distance between the two limiting fixtures 7-1.

[0026] The bottom of the catalyst mold 1 has a rectangular plug-in frame plate 1 - 1 that can extend into the sealing connection frame 8 .

[0027] It also includes a PLC and a cylinder. A sensor is arranged on the sealed connection frame 8. A liquid level gauge is arranged in the liquid receiving tank 3. The cylinder applies force on the pressure plate 2-2. The sensor, the liquid level gauge, the first delivery pump 5, the second delivery pump 6, the valve and the cylinder are all electrically connected to the PLC.

[0028] The working principle of the device is as follows: when in use, the impregnation liquid sealing cover 2 is placed on the catalyst mold 1 filled with catalyst, the sealing airbag 8-2 in the sealing connection frame 8 is inflated, and the catalyst mold 1 is stacked on the sealing connection frame 8. After the sensor on the sealing connection frame 8 detects that the catalyst mold 1 has been placed in place, the signal is sent to the PLC, and the PLC sends a start signal to the cylinder, so that the cylinder presses the impregnation spray sealing cover 2. At this time, the catalyst mold 1 and the liquid receiving tank 3 are sealed and connected through the sealing connection frame 8 and the impregnation spray sealing cover 2. Then, PLC controls the second delivery pump 6 to start, and delivers the impregnation liquid to the sprayer through the impregnation liquid delivery pipeline 2-1, and starts to impregnate the catalyst in the catalyst mold 1. The remaining impregnation liquid is sprayed and drips into the liquid receiving tank 3 through the guide channel 8-3. After the impregnation time is reached, the system stops impregnation, and the impregnation liquid dripping during the impregnation process is collected in the liquid receiving tank 3. After the liquid level meter detects that the liquid receiving tank 3 has reached a certain liquid level, it opens the valve, and the first delivery pump 5 pumps the collected impregnation liquid into the impregnation tank 4 through the impregnation liquid recovery pipeline.

[0029] The device performs impregnation in a completely sealed state to prevent the impregnation liquid from evaporating into the air and causing harm to personnel and the environment; the system impregnation system is fully automated through the setting of electronic instruments such as PLC, reducing the workload of manual handling; the impregnation system adopts a spraying method, which can evenly spray the impregnation liquid into the pores of the catalyst carrier, so that the active components are evenly impregnated, the product quality is uniform, the qualified rate is high, and the production capacity is stable.

[0030] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A catalyst impregnation device, characterized in that: It comprises a liquid receiving tank, an impregnation tank, a catalyst mold and a sprayer, wherein the liquid receiving tank and the catalyst mold are stacked from bottom to top, the liquid receiving tank and the catalyst mold are sealed and connected via a sealing unit, the catalyst mold has an impregnation spray sealing cover on the top, the sprayer is arranged in the impregnation spray sealing cover, the impregnation spray sealing cover has a pressing plate, the liquid receiving tank is connected to the impregnation tank via an impregnation liquid recovery pipeline, the sprayer is connected to the impregnation tank via an impregnation liquid delivery pipeline, the impregnation liquid recovery pipeline has a valve and a first delivery pump, and the impregnation liquid delivery pipeline has a valve and a second delivery pump; The sealing unit includes a base and a sealing connection frame, wherein the sealing connection frame is located on the base and has a guide channel connected to the liquid receiving tank. There are seals between the catalyst mold and the sealing connection frame and between the immersion spray sealing cover and the catalyst mold.

2. The catalyst impregnation device according to claim 1, characterized in that: The sealing member between the catalyst mold and the sealing connection frame is a sealing airbag located on the inner wall of the sealing connection frame. The side of the sealing connection frame has an air inlet hole connected to the sealing airbag. The sealing airbag is arranged near the top surface of the sealing connection frame. When the sealing airbag is inflated, it can abut against the bottom of the catalyst mold. The sealing member between the immersion spray sealing cover and the catalyst mold is a rubber sealing pad located on the top of the catalyst mold.

3. The catalyst impregnation device according to claim 1, characterized in that: The base is provided with two limit clamps respectively located on both sides of the sealing connection frame, the limit clamps are stepped plates with three parallel bending lines, the two horizontal bottom surfaces on the limit clamps are respectively in contact with the base and the top surface of the sealing connection frame, the two vertical inner side surfaces on the limit clamps are respectively in contact with the side surfaces of the sealing connection frame and the outer side surfaces of the catalyst mold, the limit clamps are connected to the base by fixing bolts.

4. The catalyst impregnation device according to claim 3, characterized in that: The position limiting fixture is provided with a plurality of reinforcing rib plates.

5. The catalyst impregnation device according to claim 3, characterized in that: The support platform is provided with adjusting long holes corresponding to the fixing bolts one by one.

6. The catalyst impregnation device according to claim 1, characterized in that: The bottom of the catalyst mold has a rectangular plug-in frame plate that can extend into the sealing connection frame.

7. The catalyst impregnation device according to any one of claims 1 to 6, characterized in that: It also includes a PLC and a cylinder. A sensor is arranged on the sealed connection frame. A liquid level gauge is arranged in the liquid receiving tank. The cylinder applies force on the pressure plate. The sensor, the liquid level gauge, the first delivery pump, the second delivery pump, the valve and the cylinder are all electrically connected to the PLC.

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