Filtering device for rectifying hydrobromic acid serving as MHB raw material

Abstract

The utility model is suitable for the technical field of MHB raw material hydrobromic acid rectification, and provides a filtering device for MHB raw material hydrobromic acid rectification, which comprises a tank body, the top surface of the tank body is open, an annular plate is arranged above the tank body, the annular plate is lapped on the top surface of the tank body, the bottom surface of the annular plate is provided with a filter cartridge, and the bottom surface of the filter cartridge is provided with a filter screen. A baffle is arranged at the bottom of the filter cylinder, a cylinder body is arranged in the filter cylinder in a penetrating manner, the top surface of the cylinder body is open, a silica gel layer and an activated carbon adsorption layer are arranged in the cylinder body, a discharging pipe is arranged on the bottom surface of the cylinder body, and a discharging pipe is arranged on the side wall of the bottom of the tank body in a communicating manner; preferably, a PTFE filter membrane layer is arranged between the silica gel layer and the activated carbon adsorption layer. According to the scheme, the silica gel layer, the PTFE filter membrane layer, the activated carbon adsorption layer, the filter cartridge and other filtering modes are matched with one another, so that the filtering effect can be greatly improved; the silica gel layer, the PTFE filter membrane layer and the activated carbon adsorption layer can be replaced regularly, so that the continuous filtering effect is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of hydrobromic acid distillation technology for MHB feedstock, and particularly relates to a filtration device for hydrobromic acid distillation of MHB feedstock. Background Technology

[0002] The distillation of hydrobromic acid (MHB, methylhydroxybenzenesulfonic acid) is a process in the chemical industry, typically involving the separation and refinement of hydrobromic acid from other chemicals. Distillation is a process of separating liquid mixtures by utilizing the differences in boiling points of different substances. During the distillation of hydrobromic acid, temperature and pressure are usually controlled to ensure that the different components are successfully separated according to their boiling point differences. This process is crucial for producing high-purity chemical raw materials, especially in the manufacture of pharmaceuticals, chemicals, and some specialty chemicals.

[0003] Hydrobromic acid filtration typically occurs after a reaction or before distillation. Its purpose is to remove solid particles suspended in the solution. After filtration, the hydrobromic acid solution becomes purer, preparing it for subsequent distillation or other chemical treatments.

[0004] Chinese patent application number CN202321883649.3 and publication number CN220677052U discloses a filtration device for hydrobromic acid production, relating to the field of hydrobromic acid production technology. The device includes a protective shell with a feed pipe installed on its top and a discharge pipe installed on its side wall. Several filter components are installed inside the protective shell. Each filter component includes a sealing shell and a filter bag, with the filter bag installed inside the sealing shell. The feed pipe is connected to one end of the sealing shell, and one end of the filter bag is connected to the discharge pipe. Solenoid valves are installed between the feed pipe and the sealing shell, and between the discharge pipe and the filter bag. This design, through the coordinated operation of several filter components, allows for easy maintenance even if a single filter component malfunctions; only the supply to that component needs to be stopped during maintenance, without requiring a complete shutdown. This design ensures production efficiency and reduces labor and maintenance costs.

[0005] Existing hydrobromic acid filtration devices are mostly complex in structure, use a single filtration method, and suffer from low filtration efficiency and unsatisfactory filtration results. Especially in the distillation of hydrobromic acid from MHB feedstock, the requirements for the filtration device are even higher; it needs to be able to efficiently remove solid particles from the solution while ensuring the purity and stability of the filtered hydrobromic acid solution. Therefore, this application proposes a filtration device for the distillation of hydrobromic acid from MHB feedstock. Utility Model Content

[0006] The purpose of this invention is to provide a filtration device for the distillation of hydrobromic acid from MHB feedstock, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a filtration device for the distillation of hydrobromic acid from MHB raw material, comprising a tank, the top surface of which is open, an annular plate above the tank resting on the top surface of the tank, a filter cylinder on the bottom surface of the annular plate, a baffle at the bottom of the filter cylinder, a cylindrical body passing through the filter cylinder, the top surface of the cylindrical body being open, a silica gel layer and an activated carbon adsorption layer inside the cylindrical body, a discharge pipe on the bottom surface of the cylindrical body, and a discharge pipe connected to the bottom side wall of the tank.

[0008] Preferably, a PTFE filter membrane layer is provided between the silica gel layer and the activated carbon adsorption layer.

[0009] Preferably, the top surface of the baffle is provided with a bracket, and the bracket is fixedly connected to the cylinder.

[0010] Preferably, the top surface of the annular plate is provided with a cover plate, the cover plate is fixed to the annular plate by screws, the cylinder passes through the cover plate, and the cover plate is slidably connected to the side wall of the cylinder.

[0011] Preferably, the top surface of the cylinder is provided with a flange.

[0012] Preferably, the filter cartridge can be provided in several layers, and the several layers of filter cartridges are distributed at intervals from the inside to the outside.

[0013] This utility model has at least the following beneficial effects:

[0014] (1) This utility model provides a filtration device for the distillation of hydrobromic acid for MHB raw material. By combining the filtration methods such as silica gel layer, PTFE filter membrane layer, activated carbon adsorption layer and filter cartridge, the filtration effect can be greatly improved.

[0015] (2) This utility model provides a filtration device for the distillation of hydrobromic acid from MHB raw material. The silica gel layer, PTFE filter membrane layer and activated carbon adsorption layer can be replaced regularly to ensure continuous filtration effect.

[0016] (3) This utility model provides a filtration device for the distillation of hydrobromic acid from MHB raw material. The entire filtration device consists of a tank, a cylinder and a filter cylinder. It has a simple structure and is easy to operate and maintain. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0020] In the attached diagram, the following are the reference numerals: 1. Tank body; 2. Annular plate; 3. Cylinder body; 4. Flange; 5. Cover plate; 6. Filter cartridge; 7. Silica gel layer; 8. Activated carbon adsorption layer; 9. PTFE filter membrane layer; 10. Baffle; 11. Support; 12. Discharge pipe; 13. Discharge pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0022] Example

[0023] Please see Figure 1 , Figure 2 and Figure 3 This utility model provides a technical solution: a filtration device for the distillation of hydrobromic acid, a raw material for MHB, comprising a tank 1, the top surface of which is open, an annular plate 2 above the tank 1, the annular plate 2 resting on the top surface of the tank 1, specifically, the annular plate 2 can be fixed to the tank 1 by screws, a filter cylinder 6 is provided on the bottom surface of the annular plate 2, specifically, the filter cylinder 6 is fixedly connected to the annular plate 2, a baffle 10 is provided at the bottom of the filter cylinder 6, specifically, the baffle 10 is fixedly connected to the filter cylinder 6, a cylinder 3 is inserted inside the filter cylinder 6, the top surface of the cylinder 3 is open, a silica gel layer 7 and an activated carbon adsorption layer 8 are provided inside the cylinder 3, specifically, the silica gel layer 7 and the activated carbon adsorption layer 8 are replaced periodically, a discharge pipe 12 is provided on the bottom surface of the cylinder 3, and a discharge pipe 13 is connected to the bottom side wall of the tank 1.

[0024] In this embodiment, the hydrobromic acid to be filtered is introduced into the cylinder 3, and then passes through the silica gel layer 7 and the activated carbon adsorption layer 8 for adsorption and impurity removal. After filtration, the treated hydrobromic acid enters the filter cylinder 6 through the discharge pipe 12, and after further filtration, it enters the tank 1 and is discharged through the discharge pipe 13 for the next step.

[0025] Furthermore, a PTFE filter membrane layer 9 is provided between the silica gel layer 7 and the activated carbon adsorption layer 8.

[0026] In this embodiment, the silica gel layer 7 and the activated carbon adsorption layer 8 are isolated by the PTFE filter membrane layer 9. At the same time, the PTFE filter membrane layer 9 itself also has a filtration function.

[0027] Furthermore, the top surface of the baffle 10 is provided with a bracket 11, which is fixedly connected to the cylinder 3.

[0028] In this embodiment, the bracket 11 is fixedly connected to the baffle 10, and the cylinder 3 is detachably connected to the bracket 11, with the bracket 11 supporting the cylinder 3.

[0029] Furthermore, the top surface of the annular plate 2 is provided with a cover plate 5, which is fixed to the annular plate 2 by screws. The cylinder 3 passes through the cover plate 5, and the cover plate 5 is slidably connected to the side wall of the cylinder 3.

[0030] In this embodiment, a cover plate 5 is provided to seal and isolate the inside of the tank 1.

[0031] Furthermore, a flange 4 is provided on the top surface of the cylinder 3, specifically, the flange 4 is fixedly connected to the cylinder 3.

[0032] In this embodiment, flange 4 is provided to facilitate connection with the hydrobromic acid inlet pipe.

[0033] Furthermore, the filter cartridge 6 can be provided in several layers, with the layers of filter cartridge 6 distributed alternately from the inside to the outside.

[0034] In this embodiment, setting several layers of filter cartridges 6 can further improve the filtration effect.

[0035] The working principle and usage process of this utility model: After the utility model is installed, work according to the above implementation method until all working steps are completed.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filtration device for the distillation of hydrobromic acid from MHB feedstock, characterized in that, The container includes a tank (1) with an open top surface. An annular plate (2) is provided above the tank (1) and rests on the top surface of the tank (1). A filter cylinder (6) is provided on the bottom surface of the annular plate (2). A baffle (10) is provided at the bottom of the filter cylinder (6). A cylinder (3) is inserted inside the filter cylinder (6). The top surface of the cylinder (3) is open. A silica gel layer (7) and an activated carbon adsorption layer (8) are provided inside the cylinder (3). A discharge pipe (12) is provided on the bottom surface of the cylinder (3). A discharge pipe (13) is connected to the bottom side wall of the tank (1).

2. The filtration device for the distillation of hydrobromic acid from MHB feedstock according to claim 1, characterized in that: A PTFE filter membrane layer (9) is provided between the silica gel layer (7) and the activated carbon adsorption layer (8).

3. A filtration device for the distillation of hydrobromic acid from MHB feedstock according to claim 1, characterized in that: The top surface of the baffle (10) is provided with a bracket (11), which is fixedly connected to the cylinder (3).

4. A filtration device for the distillation of hydrobromic acid from MHB feedstock according to claim 1, characterized in that: The top surface of the annular plate (2) is provided with a cover plate (5), which is fixed to the annular plate (2) by screws. The cylinder (3) passes through the cover plate (5), and the cover plate (5) is slidably connected to the side wall of the cylinder (3).

5. A filtration device for the distillation of hydrobromic acid from MHB feedstock according to claim 1, characterized in that: The top surface of the cylinder (3) is provided with a flange (4).

6. A filtration device for the distillation of hydrobromic acid from MHB feedstock according to claim 1, characterized in that: The filter cartridge (6) can be provided in several layers, and the filter cartridges (6) are distributed in a sequential manner from the inside to the outside.

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