Automatic discharging filter for palladium-carbon catalyst

Abstract

The utility model provides an automatic unloading filter for washing a palladium-carbon catalyst, which relates to the technical field of filtration and comprises a filter main body, an emptying port is arranged at the top of the filter main body, a palladium-carbon unloading port is arranged at the bottom of the filter main body, a feed port is arranged below a shell, a plurality of filter core rods are arranged in the filter main body, and the position of a liquid inlet of each filter core rod is not lower than that of the feed port. A flow guide pipe is sleeved outside the filter core rod, one end of the flow guide pipe along the liquid outlet of the filter core rod is communicated with a collecting pipe, and one end of the collecting pipe is arranged on the outer side of the filter main body and is provided with a discharge port. The filter element rod is sintered by adopting stainless steel, automatic separation of palladium carbon and water can be realized through the steps of filtering, water confluence, nitrogen purging and the like, the defect that a traditional separator needs to be manually purged by a solvent is effectively eliminated, and the whole process is clean, safe and efficient.

Description

Technical Field

[0001] The utility model belongs to the technical field of filtering and relates to an automatic unloading filter for palladium-carbon catalyst. Background Art

[0002] Palladium carbon is a highly efficient catalyst, which is made by loading metal palladium powder onto activated carbon. Its main function is to catalyze the hydrogenation of unsaturated hydrocarbons or CO. It has the characteristics of high hydrogenation reduction, good selectivity, stable performance, small feed ratio during use, repeated application, and easy recycling. It is widely used in the hydrogenation reduction refining process of petrochemical, pharmaceutical industry, electronics industry, fragrance industry, dye industry and other fine chemicals. Due to the spontaneous combustion of palladium carbon during dehydration and the fact that palladium is a precious metal, most manufacturers need to recycle it. The existing recycling technology mostly uses manual solvent washing and dehydration, which is easy to cause palladium carbon to dehydrate and self-ignite, with a low recovery rate and easy to cause loss. In view of the special physical properties of palladium carbon catalysts, the open manual unloading and feeding operation mode brings great safety and environmental risks, consumes labor, and there is palladium carbon loss, which will also affect people's occupational health. Therefore, a clean and safe production operation mode is needed that does not require repeated manual unloading and feeding, reduces safety risks and palladium carbon loss. Utility Model Content

[0003] In order to overcome the safety and environmental problems of palladium-carbon catalyst recovery, unloading and feeding in the prior art, the utility model provides a palladium-carbon catalyst automatic unloading filter to improve separation and filtration efficiency and safety assurance, and the whole process is clean, safe and efficient.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] The palladium-carbon catalyst automatic unloading filter comprises a filter body, a vent port is arranged on the top of the filter body, a palladium-carbon unloading port is arranged on the bottom, a feed port is arranged below the outer shell, a plurality of filter element rods are arranged in the filter body, the position of the liquid inlet of the filter element rod shall not be lower than the feed port, a guide pipe is sleeved on the outside of the filter element rod, the guide pipe is connected with a manifold along one end of the liquid outlet of the filter element rod, one end of the manifold is arranged on the outside of the filter body, and a discharge port is provided.

[0006] Preferably, it also includes a rinse port above the filter body, through which the palladium carbon adsorbed on the filter element rod is sprayed by a rotary sprayer.

[0007] Preferably, a nitrogen port is provided on the side of the filter body, which cooperates with the vent port to achieve balanced pressure in the container and nitrogen protection to prevent palladium carbon from spontaneous combustion.

[0008] Preferably, the bottom of the filter body is conical, and the cone angle is no greater than 60°.

[0009] Preferably, a stainless steel sintered filter screen is provided on the surface of the filter element rod, and the filtration range is 0.1 to 0.8 μm.

[0010] Preferably, a residual liquid outlet is also provided above the palladium-carbon discharge port.

[0011] Preferably, a pressure gauge is also provided above the filter body.

[0012] The advantages of the utility model compared with the prior art are:

[0013] The utility model provides a palladium carbon catalyst automatic unloading filter, which adopts a stainless steel sintered filter rod, and can realize automatic separation of palladium carbon and water through filtering, water confluence, nitrogen purging and other steps, effectively eliminating the defect that the traditional separator needs to be manually purged with solvents. The whole process is carried out in a closed space, and the equipment can be automatically remotely controlled, which improves the separation and filtration efficiency and safety assurance. The whole process is clean, safe and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front sectional view of the palladium-carbon catalyst automatic unloading filter of the utility model.

[0015] Figure 2 It is a top view of the palladium-carbon catalyst automatic unloading filter of the utility model.

[0016] In the figure: 1. Vent; 2. Nitrogen inlet; 3. Hanging ear; 4. Flow guide tube; 5. Filter element rod; 6. Residual liquid outlet; 7. Palladium carbon discharge port; 8. Feed port; 9. Filter body; 10. Manifold; 11. Liquid outlet; 12. Drain port; 13. Pressure gauge port; 14. Rinse port DETAILED DESCRIPTION

[0017] Below is the attached figure ( Figure 1-Figure 2 ) and embodiments are provided to illustrate the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in each embodiment of the present invention described below can also be combined with each other as long as they do not conflict with each other.

[0018] The present embodiment provides a palladium-carbon catalyst automatic unloading filter, including a stainless steel container filter body 9, a feed port 8, a palladium-carbon discharge port 7, a stainless steel sintered filter rod 5, a guide tube 4, a manifold 10, a liquid outlet 11, a discharge port 12, a vent 1, a pressure gauge port 13, a rinse port 14 and a rotary sprayer. Among them, there are multiple vertically arranged stainless steel sintered filter rods 5 in the separator body, and the filter element specification requirements range from 0.1 to 0.8um. ​​The filter rod is sleeved in the guide tube, with the bottom as the liquid inlet and the top as the liquid outlet. The tops of the multiple guide tubes are connected to the manifold, and the filtered solution is discharged through the discharge port at one end after being converged by the manifold.

[0019] In this embodiment, the feed port 8 is arranged below the filter body 9, and the position of the liquid inlet of the stainless steel sintered filter rod shall not be lower than the feed port 8, otherwise the filtering process will be affected. The bottom of the filter is conical, and the cone angle is not greater than 60°, which is convenient for the convergence of materials.

[0020] In this embodiment, the palladium carbon after filtration is adsorbed on the filter element rod, and nitrogen needs to be introduced through the nitrogen port on the side of the filter body, and the nitrogen back-blows the filter element rod, blowing the palladium carbon adsorbed on the outer wall of the filter element rod to the bottom of the filter body, and discharged through the palladium carbon discharge port. For the palladium carbon that still remains, open the rinse port 14 to introduce toluene, and spray and rinse it through the rotary sprayer. Toluene is discharged from the residual liquid outlet 6, and palladium carbon enters the reactor from the bottom discharge port 7 to participate in the next step of hydrogenation reaction. In this embodiment, the nitrogen inlet 2 is connected to the manifold 10 to achieve backblowing.

[0021] Furthermore, in this embodiment, the filtration range of the stainless steel sintered filter rod is 0.1-0.8 μm, and the exterior is preferably composed of a 0.45 um stainless steel sintered filter mesh.

[0022] Furthermore, a vent is provided at the top of the stainless steel container to evacuate the air inside the container, and a pressure gauge port 13 is provided to install a pressure gauge to monitor the pressure inside the container.

[0023] Furthermore, a hanging ear 3 can be provided on the filter housing wall, and the hanging ear is located in the middle of the filter.

[0024] In this embodiment, wet palladium carbon is fed into the filter body through the feed port 8 by a diaphragm pump. By utilizing the difference in molecular particle size of various materials, under the action of pressure, palladium carbon is blocked and adsorbed on the outer wall of the filter element rod 5, and water and solvent enter the internal flow guide tube 4 of the filter element rod and converge through the manifold 10 to be discharged through the liquid outlet 12. After operating for 0.5 to 3 hours, the diaphragm pump stops working, and nitrogen is back-flushed into the filter through the nitrogen port 2. The dry palladium carbon adsorbed on the filter element rod is blown to the bottom of the filter, and the residual palladium carbon is opened. The rinse port 14 is opened to pass toluene, and the mixture is sprayed and rinsed by a rotary sprayer. Toluene is discharged from the residual liquid outlet 6, and palladium carbon enters the reactor from the bottom discharge port 7 to participate in the next step of hydrogenation reaction.

[0025] The contents not described in detail in the utility model specification belong to the prior art known to professionals in the field. It is pointed out that the above description is helpful for professionals in the field to understand the invention of the utility model, but it does not limit the protection scope of the invention of the utility model. Any equivalent replacement, modification and improvement of the above description and implementation by simplifying the above description without departing from the substantive content of the invention of the utility model shall fall within the protection scope of the invention of the utility model.

Claims

1. Palladium-carbon catalyst automatic unloading filter, characterized in that: It includes a filter body, a vent port is arranged on the top of the filter body, a palladium carbon discharge port is arranged on the bottom, and a feed port is arranged below the outer shell. A plurality of filter element rods are arranged in the filter body, and the position of the liquid inlet of the filter element rod shall not be lower than the feed port. A guide pipe is sleeved on the outside of the filter element rod, and the guide pipe is connected with a manifold along one end of the liquid outlet of the filter element rod. One end of the manifold is arranged on the outside of the filter body and is provided with a discharge port.

2. The palladium-carbon catalyst automatic unloading filter according to claim 1, characterized in that: It also includes a rinse port above the filter body, which is used to spray the palladium carbon adsorbed on the filter element rod through a rotating sprayer.

3. The palladium-carbon catalyst automatic unloading filter according to claim 1, characterized in that: A nitrogen port is arranged on the side of the filter body, which cooperates with the vent port to achieve balanced pressure in the container and nitrogen protection to prevent spontaneous combustion of palladium carbon.

4. The palladium-carbon catalyst automatic unloading filter according to claim 1, characterized in that: The bottom of the filter body is conical, and the cone angle is not greater than 60°.

5. The palladium-carbon catalyst automatic unloading filter according to claim 1, characterized in that: A stainless steel sintered filter screen is set on the surface of the filter rod, and the filtration range is 0.1 to 0.8 μm.

6. The palladium-carbon catalyst automatic unloading filter according to claim 1, characterized in that: A residual liquid outlet is also provided above the palladium-carbon discharge port.

7. The palladium-carbon catalyst automatic unloading filter according to claim 1, characterized in that: A pressure gauge is also provided above the filter body.

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