Catalyst filtering kettle for producing cyclohexane carboxylic acid

Abstract

The utility model provides a catalyst filtering kettle for production of cyclohexane carboxylic acid, the catalyst filtering kettle for production of cyclohexane carboxylic acid comprises a kettle body, a plurality of microporous filtering rods, a shunt pipe, a discharge assembly and a plugging assembly, the kettle body is provided with a feed port and a discharge port; the microporous filter rods are arranged in the kettle body and connected with the bottom of the kettle body, and the bottoms of the microporous filter rods are opened and communicated with the outside of the kettle body; the shunting pipe is communicated with the feeding hole of the kettle body and is communicated with the plurality of microporous filter rods; the discharging assembly comprises a plurality of screw rods and a driving assembly, the plurality of screw rods are in one-to-one correspondence with the plurality of microporous filter rods, the screw rods penetrate through the microporous filter rods, and the lower ends of the screw rods extend out of the kettle body; the power output end of the driving assembly is connected with the multiple screw rods and used for driving the screw rods to rotate. And the plugging assembly is used for plugging or opening the bottom opening of the microporous filter rod. According to the catalyst filtering kettle for producing the cyclohexane carboxylic acid, the microporous filtering rod does not need to be detached, and the operation is simple.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and particularly relates to a catalyst filtering kettle for producing cyclohexanecarboxylic acid. Background Art

[0002] Cyclohexanecarboxylic acid is an important organic chemical raw material, typically synthesized via catalytic hydrogenation of benzoic acid. Benzoic acid has a melting point of 122.13°C. After being melted into liquid form, cyclohexanecarboxylic acid is hydrogenated and reduced in a reactor over a Pd / C catalyst. The Pd / C catalyst is a black solid and relatively expensive. After the reaction in the reactor is complete, the cyclohexanecarboxylic acid, mixed with a small amount of Pd / C catalyst, enters a filter kettle for filtration. Existing filter kettles use a method of evaporation followed by cooling to separate the solid Pd / C catalyst. Cyclohexanecarboxylic acid has a boiling point of 232.5°C, requiring heating and cooling devices in the filter kettle, which results in a complex and costly equipment structure.

[0003] To this end, the applicant designed a filter kettle consisting of a kettle body, a diversion pipe and multiple microporous filter rods. A material outlet is provided at the bottom of the kettle body. During operation, the material mixed with the catalyst enters the microporous filter rods through the diversion pipe for filtration. The filtered material is discharged through the material outlet of the kettle body, and the catalyst remains in the microporous filter rods.

[0004] Therefore, after the filtration is completed, the filter rod needs to be removed to take out the catalyst, which is a cumbersome operation. Utility Model Content

[0005] The utility model provides a catalyst filtering kettle for cyclohexanecarboxylic acid production, aiming to solve the technical problems raised in the above background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is to provide a catalyst filtering kettle for cyclohexanecarboxylic acid production, comprising:

[0007] The kettle body is provided with a feed port and a discharge port;

[0008] A plurality of microporous filter rods are arranged in the kettle body and connected to the bottom of the kettle body, and the bottom of the microporous filter rods are opened and communicated with the outside of the kettle body;

[0009] A diverter pipe is connected to the feed port of the kettle body and is connected to the plurality of microporous filter rods;

[0010] A discharge assembly includes a plurality of screw rods and a drive assembly, wherein the plurality of screw rods correspond to the plurality of microporous filter rods one by one, the screw rods are inserted into the microporous filter rods, and the lower ends extend out of the kettle body; the power output end of the drive assembly is respectively connected to the plurality of screw rods to drive the screw rods to rotate; and

[0011] The blocking component is used to block or open the bottom opening of the microporous filter rod.

[0012] In a possible implementation of the catalyst filtering kettle for cyclohexanecarboxylic acid production provided by the present invention, several of the microporous filter rods are arranged in a ring shape, the diversion pipe is annular, and the diversion pipe is arranged on the top of the microporous filter rods, connected to and communicated with the microporous filter rods.

[0013] In a possible implementation of the catalyst filtering kettle for cyclohexanecarboxylic acid production provided by the present invention, the driving assembly includes a plurality of motor assemblies, the plurality of motor assemblies correspond one-to-one to the plurality of screw rods, and the power output end of the motor assembly is connected to the screw rod.

[0014] In a possible implementation of the catalyst filter kettle for cyclohexanecarboxylic acid production provided by the present invention, the blocking component includes:

[0015] A plurality of plugs corresponding to the plurality of microporous filter rods;

[0016] A lifting assembly, whose power output end is connected to the plug, for driving the plug to move up and down to block or open the bottom opening of the microporous filter rod; and

[0017] The base is arranged at the bottom of the lifting assembly, and the lifting assembly is connected to the base.

[0018] In a possible implementation of the catalyst filtering kettle for cyclohexanecarboxylic acid production provided by the present invention, the plug is connected to the screw rod, and the lifting assembly includes:

[0019] a connecting frame connected to the plurality of motor assemblies; and

[0020] The lifting mechanism is connected to the base, and the power output end of the lifting mechanism is connected to the connecting frame, and is used to drive the connecting frame and the motor assembly, the screw rod and the plug thereon to move up and down.

[0021] In a possible implementation of the catalyst filtering kettle for cyclohexanecarboxylic acid production provided by the present invention, the lifting mechanism includes:

[0022] A lifting drive mechanism connected to the base, with a power output end connected to the connecting frame, for driving the connecting frame to move up and down; and

[0023] The lifting guide mechanism comprises a plurality of guide rods, which are spaced apart and connected to the base and slidably matched with the connecting frame.

[0024] In a possible implementation of the catalyst filtering kettle for cyclohexanecarboxylic acid production provided by the present invention, a collecting hopper is further included. The collecting hopper is arranged at the bottom of the kettle body and is used to receive the catalyst discharged from the bottom opening of the microporous filter rod.

[0025] In a possible implementation of the catalyst filtering kettle for cyclohexanecarboxylic acid production provided by the present invention, the collecting hopper is in an inverted cone shape, and a discharge port is provided at the bottom.

[0026] The catalyst filtering kettle for cyclohexanecarboxylic acid production provided by the utility model has the following beneficial effects: compared with the prior art, the catalyst filtering kettle for cyclohexanecarboxylic acid production provided by the utility model, when in use, the material enters the diversion pipe through the feed port and then enters the microporous filter rod for filtration, the filtered material enters the kettle body and is discharged from the discharge port of the kettle body, the catalyst remains in the microporous filter rod, the sealing component is controlled to open the bottom opening of the microporous filter rod, and the driving component is controlled to drive the spiral rod in the microporous filter rod to rotate, so as to discharge the catalyst without removing the microporous filter rod, the operation is simple, and the production efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of a three-dimensional partial cross-sectional structure of a catalyst filter kettle for cyclohexanecarboxylic acid production provided in an embodiment of the present invention;

[0028] Figure 2 A schematic cross-sectional view of a catalyst filter kettle for cyclohexanecarboxylic acid production provided in an embodiment of the present invention;

[0029] Description of reference numerals:

[0030] 10. Kettle body; 11. Feed port; 12. Discharge port; 20. Diverter pipe; 30. Microporous filter rod;

[0031] 41. Screw rod; 42. Motor assembly; 51. Plug; 52. Connecting frame; 53. Lifting drive mechanism;

[0032] 54. Guide rod; 55. Base; 60. Aggregate hopper. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0035] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0036] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. Technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0037] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0038] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be subsequently positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used herein are interpreted accordingly.

[0039] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0040] Please also refer to Figures 1 to 2 The catalyst filter kettle for producing cyclohexanecarboxylic acid provided by the present invention is now described. The catalyst filter kettle for producing cyclohexanecarboxylic acid includes a kettle body 10, a plurality of microporous filter rods 30, a diverter pipe 20, a discharge assembly, and a plugging assembly. The kettle body 10 is provided with a feed port 11 and a discharge port 12; the plurality of microporous filter rods 30 are arranged in the kettle body 10 and connected to the bottom of the kettle body 10. The bottom of the microporous filter rods 30 is provided with an opening and communicates with the outside of the kettle body 10; the diverter pipe 20 is communicated with the feed port 11 of the kettle body 10 and is also communicated with the plurality of microporous filter rods 30; the discharge assembly includes a plurality of screw rods 41 and a drive assembly. The plurality of screw rods 41 correspond to the plurality of microporous filter rods 30 one by one. The screw rods 41 are inserted into the microporous filter rods 30, and the lower ends extend out of the kettle body 10; the power output end of the drive assembly is respectively connected to the plurality of screw rods 41 for driving the screw rods 41 to rotate; and the plugging assembly is used to block or open the bottom opening of the microporous filter rods 30.

[0041] It should be noted that the spiral rod 41 is composed of a rod body and spiral blades surrounding the rod body, and the length of the rod body is equal to the height of the spiral blades.

[0042] During use, the liquid cyclohexanecarboxylic acid material discharged from the reactor is injected into the reactor body 10 through the material feed port 11. The lower end of the material feed port 11 is connected to the diversion pipe 20. The liquid material mixed with the solid Pd / C catalyst flows into the microporous filter rod 30 through the diversion pipe 20. The microporous filter rod 30 is provided with a plurality of micropores. The liquid cyclohexanecarboxylic acid flows out through the micropores on the microporous filter rod 30, and the solid Pd / C catalyst remains inside the microporous filter rod 30, thereby realizing the separation of the solid Pd / C catalyst and the material.

[0043] The filtered cyclohexanecarboxylic acid is discharged from the kettle body 10 through the material outlet. Afterwards, the blocking component is controlled to open the bottom opening of the microporous filter rod 30, and the driving component is controlled to drive the screw rod 41 in the microporous filter rod 30 to rotate to discharge the catalyst.

[0044] The beneficial effects of the catalyst filtering kettle for cyclohexanecarboxylic acid production provided by the utility model are as follows: compared with the prior art, the catalyst filtering kettle for cyclohexanecarboxylic acid production provided by the utility model, when in use, the material enters the diversion pipe 20 through the feed port 11, and then enters the microporous filter rod 30 for filtration, the filtered material enters the kettle body 10, and is discharged from the discharge port 12 of the kettle body 10, and the catalyst remains in the microporous filter rod 30. The blocking component is controlled to open the bottom opening of the microporous filter rod 30, and the driving component is controlled to drive the spiral rod 41 in the microporous filter rod 30 to rotate, so as to discharge the catalyst without removing the microporous filter rod 30. The operation is simple and the production efficiency is greatly improved.

[0045] like Figure 1 and Figure 2 As shown, in a specific embodiment of the catalyst filtering kettle for cyclohexanecarboxylic acid production provided in an embodiment of the present invention, a plurality of microporous filter rods 30 are arranged in a ring shape, and the diversion tube 20 is in a ring shape. The diversion tube 20 is arranged on the top of the microporous filter rod 30 and is connected and communicated with the microporous filter rod 30.

[0046] Specifically, eight microporous filter rods 30 are provided, which are arranged in a circular shape and at equal distances around the axis of the kettle body 10 .

[0047] like Figure 1 and Figure 2 As shown, in a specific embodiment of the catalyst filtering kettle for cyclohexanecarboxylic acid production provided by an embodiment of the present invention, the driving assembly includes a plurality of motor assemblies 42, and the plurality of motor assemblies 42 correspond one to one with a plurality of screw rods 41, and the power output end of the motor assembly 42 is connected to the screw rod 41.

[0048] Specifically, the motor assembly 42 is composed of a motor and a matching reducer.

[0049] like Figure 1 and Figure 2As shown, in a specific embodiment of the catalyst filtering kettle for cyclohexanecarboxylic acid production provided by an embodiment of the present invention, the blocking assembly includes a plurality of plugs 51, a lifting assembly and a base 55, and the plurality of plugs 51 correspond one to one with the plurality of microporous filter rods 30; the power output end of the lifting assembly is connected to the plug 51, which is used to drive the plug 51 to move up and down to block or open the bottom opening of the microporous filter rod 30; the base 55 is arranged at the bottom of the lifting assembly, and the lifting assembly is connected to the base 55.

[0050] It should be noted that the plug 51 is made of a corrosion-resistant elastic material to ensure good sealing performance. Specifically, the plug 51 is made of corrosion-resistant rubber or silicone.

[0051] like Figure 1 and Figure 2 As shown, in a specific embodiment of the catalyst filtering kettle for cyclohexanecarboxylic acid production provided by an embodiment of the present invention, the plug 51 is connected to the screw rod 41, and the lifting assembly includes a connecting frame 52 and a lifting mechanism. The connecting frame 52 is connected to several motor assemblies 42; the lifting mechanism is connected to the base 55, and the power output end of the lifting mechanism is connected to the connecting frame 52 to drive the connecting frame 52 and the motor assembly 42, screw rod 41 and plug 51 thereon to move up and down.

[0052] Specifically, such as Figure 1 and Figure 2 As shown, in a specific embodiment of the catalyst filter kettle for cyclohexanecarboxylic acid production provided by an embodiment of the present invention, the lifting mechanism includes a lifting drive mechanism 53 and a lifting guide mechanism. The lifting drive mechanism 53 is connected to the base 55, and the power output end is connected to the connecting frame 52 to drive the connecting frame 52 to move up and down; the lifting guide mechanism includes a plurality of guide rods 54, which are arranged at intervals and connected to the base 55, and slide with the connecting frame 52.

[0053] It should be noted that after the filtration is completed, the motor assembly 42 first drives the screw rod 41 to rotate for a period of time to concentrate the catalyst in the microporous filter rod 30 downward. After that, while keeping the screw rod 41 rotating, the connecting frame 52 is driven down by the lifting drive mechanism 53, thereby driving the drive assembly, the screw rod 41 and the plug 51 to descend, and the bottom opening of the microporous filter rod 30 is opened to discharge the catalyst.

[0054] Specifically, the bottom of the plug 51 is tapered to facilitate insertion into the microporous filter rod 30. The lifting drive mechanism 53 is a mechanism capable of outputting axial displacement, such as a plurality of air cylinders, hydraulic cylinders, or electric push rods. Preferably, the lifting drive mechanism 53 includes two air cylinders, which are symmetrically arranged about the axis of the kettle body 10 to ensure balanced force on the connecting frame 52. The lifting guide mechanism includes four guide rods 54, which are symmetrically arranged in pairs about the axis of the kettle body 10 to enhance the guidance of the connecting frame 52 and make the lifting of the connecting frame 52 more stable.

[0055] like Figure 1 and Figure 2 As shown, in a specific embodiment of the catalyst filtering kettle for cyclohexanecarboxylic acid production provided by an embodiment of the present invention, it also includes a collecting hopper 60, which is arranged at the bottom of the kettle body 10 and is used to receive the catalyst discharged from the bottom opening of the microporous filter rod 30.

[0056] Specifically, such as Figure 1 and Figure 2 As shown, in a specific embodiment of the catalyst filtering kettle for cyclohexanecarboxylic acid production provided by the present invention, the collecting hopper 60 is in an inverted cone shape, and a discharge port is provided at the bottom to collect the catalyst more quickly.

[0057] It should be noted that if the catalyst adheres to the collecting hopper 60, it can be discharged from the discharge port of the collecting hopper 60 by flushing with water, and then the water therein can be filtered out to complete the collection of the catalyst.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A catalyst filtering kettle for cyclohexanecarboxylic acid production, characterized in that: include: The kettle body is provided with a feed port and a discharge port; A plurality of microporous filter rods are arranged in the kettle body and connected to the bottom of the kettle body, and the bottom of the microporous filter rods are opened and communicated with the outside of the kettle body; A diverter pipe is connected to the feed port of the kettle body and is connected to the plurality of microporous filter rods; The discharge assembly includes a plurality of screw rods and a drive assembly, wherein the plurality of screw rods correspond to the plurality of microporous filter rods one by one, the screw rods are inserted into the microporous filter rods, and the lower ends extend out of the kettle body; the power output end of the drive assembly is respectively connected to the plurality of screw rods to drive the screw rods to rotate; as well as The blocking component is used to block or open the bottom opening of the microporous filter rod.

2. The catalyst filtering kettle for cyclohexanecarboxylic acid production according to claim 1, wherein The plurality of microporous filter rods are arranged in a ring shape, the diversion tube is in a ring shape, and the diversion tube is arranged on the top of the microporous filter rods and is connected and communicated with the microporous filter rods.

3. The catalyst filtering kettle for cyclohexanecarboxylic acid production according to claim 1, wherein The driving assembly includes a plurality of motor assemblies, and the plurality of motor assemblies correspond to the plurality of screw rods one by one, and the power output end of the motor assembly is connected to the screw rod.

4. The catalyst filtering kettle for cyclohexanecarboxylic acid production according to claim 3, wherein The blocking component comprises: A plurality of plugs corresponding to the plurality of microporous filter rods; A lifting assembly, whose power output end is connected to the plug, for driving the plug to move up and down to block or open the bottom opening of the microporous filter rod; and The base is arranged at the bottom of the lifting assembly, and the lifting assembly is connected to the base.

5. The catalyst filtering kettle for cyclohexanecarboxylic acid production according to claim 4, wherein The plug is connected to the screw rod, and the lifting assembly includes: a connecting frame connected to the plurality of motor assemblies; and The lifting mechanism is connected to the base, and the power output end of the lifting mechanism is connected to the connecting frame, and is used to drive the connecting frame and the motor assembly, the screw rod and the plug thereon to move up and down.

6. The catalyst filtering kettle for cyclohexanecarboxylic acid production according to claim 5, wherein The lifting mechanism comprises: A lifting drive mechanism connected to the base, with a power output end connected to the connecting frame, for driving the connecting frame to move up and down; and The lifting guide mechanism comprises a plurality of guide rods, which are spaced apart and connected to the base and slidably matched with the connecting frame.

7. The catalyst filtering kettle for cyclohexanecarboxylic acid production according to claim 1, wherein It also includes a collecting hopper, which is arranged at the bottom of the kettle body and is used to receive the catalyst discharged from the bottom opening of the microporous filter rod.

8. The catalyst filtering kettle for cyclohexanecarboxylic acid production according to claim 7, wherein The collecting hopper is in an inverted cone shape, and a discharge port is provided at the bottom.

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