Purification system of second-class petroleum ether

Abstract

The utility model discloses a secondary petroleum ether purification system, which comprises a pretreatment module, a multi-stage rectifying tower, an efficient condensing device and an impurity separation device which are sequentially communicated and connected, the pretreatment module comprises a treatment cabinet, and a multi-stage filtering assembly and an adsorption purification mechanism are arranged in the treatment cabinet. The multi-stage filtering assembly comprises a plurality of C-shaped base blocks, each C-shaped base block is provided with a filtering structure and a flow adjusting mechanism, the adsorption and purification mechanism comprises a box-shaped base block, and a plurality of filler boxes filled with different adsorption fillers are arranged in the box-shaped base block. Solid particle impurities in petroleum ether can be gradually removed, and macromolecular impurities, pigments and charged impurity ions can be specifically removed. According to the purification system, the operation efficiency and the service life of subsequent purification equipment are improved, the energy consumption and the operation cost are reduced, meanwhile, the purity and the quality of a final product are improved, and efficient and high-quality purification is realized.

Description

Technical Field

[0001] This utility model relates to the field of chemical raw material purification, and more specifically, to a purification system for Class II petroleum ether. Background Technology

[0002] In existing purification technologies for Group II petroleum ethers, most processes lack effective pretreatment, directly feeding the crude Group II petroleum ether into multi-stage distillation, condensation, and impurity separation processes. Because crude petroleum ether contains solid particulate impurities, macromolecular impurities, pigments, and charged impurity ions, these impurities can cause numerous problems in subsequent purification processes. For example, solid particulate impurities may clog the trays or packing of the distillation column, affecting distillation efficiency and reducing the separation effect of components with different boiling points; macromolecular impurities and pigments may interfere with the condensation process, reducing condensation efficiency and potentially affecting the purity and color of the final product; charged impurity ions may damage the adsorption columns and membrane separation devices in the impurity separation unit, shortening their service life and increasing operating costs. Furthermore, the lack of pretreatment means that subsequent purification processes require higher energy consumption and longer processing times to achieve a certain purification effect, resulting in low overall purification efficiency and difficulty in guaranteeing product quality.

[0003] How to invent a purification system for Class II petroleum ethers to improve these problems has become an urgent issue for those skilled in the art. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a purification system for Class II petroleum ethers. It aims to improve the existing purification technology for Class II petroleum ethers, where most purification processes often lack effective pretreatment steps, which often leads to equipment blockage, reduced operating efficiency, and unsatisfactory purification results. This results in shortened equipment lifespan, increased operating costs, and difficulty in ensuring product quality.

[0005] This invention is implemented as follows: A purification system for Class II petroleum ether includes a pretreatment module, a multi-stage distillation column, a high-efficiency condenser, and an impurity separation device connected in sequence. The pretreatment module includes a processing cabinet with an operation port on one side and an operation sealing door rotatably installed on one edge of the operation port. A feed pipe is connected to the top surface of the processing cabinet. Several sets of corresponding and evenly distributed insert guide rails are provided on both inner walls of the processing cabinet from top to bottom. A multi-stage filtration assembly and an adsorption purification mechanism are connected through these insert guide rails. The multi-stage filtration assembly includes multiple C-shaped base blocks, each of which is slidably connected to a corresponding set of insert guide rails. Each C-shaped base block is provided with a filtration structure and a flow regulation mechanism. The adsorption purification mechanism includes a box-shaped base block, which contains several packing boxes stacked from top to bottom and filled with different adsorption packing materials. The box-shaped base block is located at the bottom of all C-shaped base blocks. The bottom end of the box-shaped base block is connected to one end of the discharge pipe, and the other end of the discharge pipe extends to the outside of the treatment cabinet through a through hole and is connected to the inlet pipe of the multi-stage distillation column.

[0006] In a preferred embodiment of this utility model, a transparent viewing window is provided on the other side surface of the processing cabinet.

[0007] In a preferred embodiment of this utility model, each of the C-shaped base blocks has a first connecting groove on both sides corresponding to the insert guide rail, and each first connecting groove is slidably connected to the corresponding side insert guide rail. The box-shaped base blocks also have second connecting grooves on both sides corresponding to the insert guide rail, and each second connecting groove is slidably connected to the corresponding side insert guide rail.

[0008] In a preferred embodiment of this utility model, the filter structure is a filter screen, which is fixedly connected to the bottom end between the inner walls of the cavity in the middle of the C-shaped base block. The bottom surface of the filter screen is flush with the bottom surface of the C-shaped base block, and the mesh size of the filter screen gradually decreases from top to bottom.

[0009] In a preferred embodiment of this utility model, each flow regulating mechanism includes two baffles and a device box. The two baffles are respectively disposed at both ends of the bottom surface of the C-shaped base, and the upper surface of each baffle is in contact with the bottom surface of the C-shaped base. The device box is fixedly installed on one side of the bottom surface of the C-shaped base, and the device box is provided with a synchronous opening and closing mechanism and two baffles.

[0010] In a preferred embodiment of this utility model, the synchronous opening and closing mechanism includes two connecting rods. One end of each connecting rod is fixedly connected to the bottom surface of the corresponding baffle, and the other ends of the two connecting rods are slidably connected in a connecting groove. The connecting groove is opened on one side surface of the equipment box facing the two baffles. The other end of each connecting rod extends into the inside of the equipment box through the connecting groove and is fixedly connected to a connecting part. One side surface of each connecting part is provided with a threaded hole and threadedly connected to both ends of a bidirectional threaded rod. One end of the bidirectional threaded rod is rotatably connected to the inner wall of one end of the equipment box, and the other end of the bidirectional threaded rod is fixedly connected to one end of the output shaft of the drive motor. The drive motor is fixedly installed on the inner wall of the other end of the equipment box.

[0011] In a preferred embodiment of this utility model, the inner wall of the central cavity of each C-shaped base block is configured as a flow guide slope that is concave towards the center.

[0012] In a preferred embodiment of this utility model, each of the packing boxes is a rectangular structure that runs vertically through the top and bottom, and a permeable mesh plate can be detachably connected between the inner walls of the top and bottom openings.

[0013] In a preferred embodiment of this utility model, limiting grooves are provided on the inner walls of both sides of the box-shaped base block, and limiting protrusions corresponding to and slidingly engaging with the limiting grooves are integrally provided on both sides of each stuffing box.

[0014] In a preferred embodiment of this utility model, the bottom inner wall of the box-shaped base is configured as a recessed flow guiding structure.

[0015] The beneficial effects of this invention are as follows: The petroleum ether purification system obtained through the above design utilizes a pretreatment module and a multi-stage filtration and adsorption purification mechanism to gradually remove solid particulate impurities from the petroleum ether. It can also specifically remove macromolecular impurities, pigments, and charged impurity ions. The pretreated petroleum ether is purer, reducing damage to subsequent multi-stage distillation columns, high-efficiency condensers, and impurity separation devices. This improves the operating efficiency and lifespan of these devices, reduces energy consumption and operating costs, and simultaneously enhances the purity and quality of the final product, achieving efficient and high-quality purification. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic perspective view of the overall structure provided by the embodiment of this utility model;

[0018] Figure 2 A three-dimensional schematic cross-sectional view of the overall structure provided for the embodiments of this utility model;

[0019] Figure 3 A perspective view of the overall structure of the processing cabinet provided for an embodiment of this utility model;

[0020] Figure 4 A three-dimensional schematic diagram of the overall structure of the C-shaped base block provided for an embodiment of this utility model;

[0021] Figure 5 A perspective view of the overall structure of the C-shaped base block on the other side, provided for an embodiment of this utility model;

[0022] Figure 6 A three-dimensional schematic cross-sectional view of the C-shaped base block provided for an embodiment of this utility model;

[0023] Figure 7 A three-dimensional schematic cross-sectional view of the adsorption purification mechanism provided in this embodiment of the utility model.

[0024] In the diagram: 1. Processing cabinet; 2. Multi-stage filtration assembly; 3. Adsorption and purification mechanism; 4. Discharge pipe; 101. Insert guide rail; 102. Operating sealing door; 103. Feed pipe; 104. Transparent viewing window; 201. C-shaped base block; 202. First connecting slide; 203. Filter screen; 204. Baffle; 205. Equipment box; 206. Connecting rod; 207. Connecting slide; 208. Connecting part; 209. Bidirectional threaded rod; 210. Drive motor; 211. Guide slope; 301. Box-shaped base block; 302. Second connecting slide; 303. Packing box; 304. Permeable mesh plate; 305. Limiting slide; 306. Recessed guide structure. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Please see Figures 1 to 7This utility model provides a technical solution: a purification system for Class II petroleum ether, comprising a pretreatment module, a multi-stage distillation column, a high-efficiency condenser, and an impurity separation device connected in sequence. The pretreatment module includes a processing cabinet 1, with an operation port on one side and an operation sealing door 102 rotatably installed on one edge of the operation port. A feed pipe 103 is connected to the top surface of the processing cabinet 1. Several sets of corresponding and evenly distributed insert guide rails 101 are provided on the inner walls of both sides of the processing cabinet 1, and a multi-stage filtration assembly 2 and an adsorption purification mechanism 3 are connected through the several sets of insert guide rails 101. The filter assembly 2 includes multiple C-shaped base blocks 201. Each C-shaped base block 201 is slidably connected to a corresponding set of insert guide rails 101. Each C-shaped base block 201 is provided with a filter structure and a flow regulation mechanism. The adsorption purification mechanism 3 includes a box-shaped base block 301. Several packing boxes 303 are stacked from top to bottom and filled with different adsorption packing materials inside the box-shaped base block 301. The box-shaped base block 301 is located at the bottom of all C-shaped base blocks 201. The bottom end of the box-shaped base block 301 is connected to one end of the discharge pipe 4. The other end of the discharge pipe 4 extends to the outside of the treatment cabinet 1 through a through hole and is connected to the liquid inlet pipe of the multi-stage distillation column.

[0027] It should be noted that the system also includes an automated control system. This system controls the flow rate of petroleum ether entering the processing cabinet 1 by installing a flow sensor and regulating valve in the feed pipe 103; and pressure sensors are installed in the multi-stage filtration assembly 2 and the adsorption purification mechanism 3 to monitor pressure changes in real time and adjust the flow regulation mechanism according to the pressure conditions. The multi-stage distillation column can be a plate distillation column or a packed distillation column, achieving the separation of components with different boiling points through the action of the trays or packing within the column. The high-efficiency condensing device can be a shell-and-tube condenser or a spiral tube condenser to condense the vapor at the top of the distillation column into liquid. The impurity separation device can be combined with an adsorption column and a membrane separation device to further remove trace impurities. Different adsorbents such as activated carbon and ion exchange resins can be filled in different packing boxes 303 to adsorb and remove different macromolecular impurities, pigments, and charged impurity ions in the petroleum ether.

[0028] Please see Figure 1 and Figure 2 A transparent viewing window 104 is provided on the other side surface of the processing cabinet 1.

[0029] Operators can observe the operating status of the multi-stage filtration assembly 2 and the adsorption purification mechanism 3 through the transparent viewing window 104, such as the clogging status of the filter screen 203 and the color change of the adsorption packing. The automated control system can be equipped with a camera near the viewing window to transmit internal images to a monitoring terminal for remote monitoring. This improves the system's operability and safety, allowing operators to understand the internal situation without opening the sealed operating door 102, enabling timely action and preventing production accidents caused by undetected internal malfunctions. It also improves production efficiency.

[0030] Please see Figures 4 to 6 Each C-shaped base block 201 has a first connecting groove 202 on both sides of its surface, corresponding to the insertion guide rail 101. Each first connecting groove 202 is slidably connected to the corresponding side insertion guide rail 101. The box-shaped base block 301 also has a second connecting groove 302 on both sides of its surface, corresponding to the insertion guide rail 101. Each second connecting groove 302 is slidably connected to the corresponding side insertion guide rail 101.

[0031] C-shaped base blocks 201 are slidably connected to insert guide rails 101 via a first connecting groove 202, and box-shaped base blocks 301 are slidably connected to insert guide rails 101 via a second connecting groove 302. During installation, the components are slid into the processing cabinet 1 along the insert guide rails 101; during disassembly, they slide out along the guide rails. After closing, the sealing door 102 can cooperate with the inner wall of one side of the processing cabinet 1 to limit the movement of several C-shaped base blocks 201 and box-shaped base blocks 301. An automated module system can be equipped with position sensors on the insert guide rails 101 to monitor whether the installation position of the components is correct. The sliding connection method makes the installation and disassembly of the components more convenient and quick, while ensuring the stability of the components within the processing cabinet 1, avoiding any impact on filtration and purification effects due to shaking or displacement.

[0032] Furthermore, the filter structure is a filter screen 203, which is fixedly connected to the bottom end between the inner walls of the cavity in the middle of the C-shaped base block 201. The bottom surface of the filter screen 203 is flush with the bottom surface of the C-shaped base block 201, and the mesh size of several filter screens 203 gradually decreases from top to bottom.

[0033] The filter screen 203 is fixed at the bottom of the cavity between the inner walls of the C-shaped base block 201. Petroleum ether is filtered from top to bottom through the filter screens 203 with different pore sizes. The automated control system can adjust the use of each stage of the filter screen 203 according to the impurity content and flow rate of the petroleum ether, prioritizing the use of filter screens with appropriate pore sizes. The multi-stage filtration with progressively smaller pore sizes can gradually remove solid particulate impurities of different sizes, improve filtration accuracy, and ensure more thorough removal of impurities from the petroleum ether, providing better raw material conditions for subsequent processes.

[0034] Furthermore, each flow regulating mechanism includes two baffles 204 and an equipment box 205. The two baffles 204 are respectively disposed at both ends of the bottom surface of the C-shaped base block 201, and the upper surface of each baffle 204 is in contact with the bottom surface of the C-shaped base block 201. The equipment box 205 is fixedly installed on one side of the bottom surface of the C-shaped base block 201, and the equipment box 205 is provided with a synchronous opening and closing mechanism and two baffles 204.

[0035] The movement of two baffles 204 is controlled by a synchronous opening and closing mechanism in the equipment box 205, thereby changing the flow rate of the raw liquid through the corresponding filter screen 203 and the filtration area of ​​the filter screen 203. The automated control system can send commands to the drive motor 210 based on data from the flow sensor to control the opening and closing degree of the baffles 204. It can independently adjust the flow rate of each filter screen 203 according to the actual conditions of the petroleum ether, such as impurity content and particle distribution, ensuring that each level of filter screen 203 can function fully, preventing some filter screens from being overloaded and prematurely clogging, extending the service life of the filter screens 203, and improving filtration efficiency.

[0036] Furthermore, the synchronous opening and closing mechanism includes two connecting rods 206. One end of each connecting rod 206 is fixedly connected to the bottom surface of the corresponding baffle 204, and the other ends of the two connecting rods 206 are slidably connected in the connecting groove 207. The connecting groove 207 is opened on one side surface of the equipment box 205 facing the two baffles 204. The other end of each connecting rod 206 extends into the interior of the equipment box 205 through the connecting groove 207 and is fixedly connected to a connecting part 208. One side surface of each connecting part 208 is threaded through and threaded to both ends of a bidirectional threaded rod 209. One end of the bidirectional threaded rod 209 is rotatably connected to the inner wall of one end of the equipment box 205, and the other end of the bidirectional threaded rod 209 is fixedly connected to one end of the output shaft of the drive motor 210. The drive motor 210 is fixedly installed on the inner wall of the other end of the equipment box 205.

[0037] The drive motor 210 rotates, causing the bidirectional threaded rod 209 to rotate. The connecting part 208 on the bidirectional threaded rod 209 moves towards or away from each other under the action of the thread, driving the two baffles 204 to move synchronously through the connecting rod 206. The automated control system can precisely control the speed and direction of the drive motor 210, achieving precise adjustment of the opening and closing degree of the baffles 204. The synchronous opening and closing mechanism has a simple structure and stable operation, reliably achieving synchronous movement of the two baffles 204, ensuring the accuracy and consistency of flow regulation, and further improving the effect and reliability of flow regulation.

[0038] Furthermore, the inner wall of the central cavity of each C-shaped base block 201 is configured as a flow guide slope 211 that is concave towards the center.

[0039] After entering the C-type base block 201, petroleum ether converges towards the center under the action of the guide slope 211, and is filtered more evenly through the filter screen 203. This improves the uniformity of petroleum ether passing through the filter screen 203, avoids excessive or insufficient flow in some areas, allows the filter screen 203 to fully exert its filtration effect, and also reduces the possibility of local clogging of the filter screen 203, thus extending its service life.

[0040] Please see Figure 7Each stuffing box 303 is a rectangular structure that runs vertically through the top and bottom, and a permeable mesh plate 304 can be detachably connected between the inner walls of the top and bottom openings.

[0041] Petroleum ether enters the packing box 303 through the permeation mesh plate 304 and comes into contact with the adsorption packing for adsorption and purification. When the adsorption packing needs to be replaced, the permeation mesh plate 304 can be disassembled for operation. The detachable connection of the permeation mesh plate 304 facilitates the replacement and maintenance of the adsorption packing, ensures the continuous and effective operation of the adsorption purification mechanism 3, and improves the adsorption purification effect and the service life of the equipment.

[0042] Furthermore, limit grooves 305 are provided on both inner walls of the box-shaped base block 301, and limit protrusions corresponding to and slidingly engaging with the limit grooves 305 are integrally provided on both sides of each stuffing box 303.

[0043] Align the limiting protrusions on both sides of each packing box 303 with the limiting grooves 305 on the inner walls of both sides of the box-shaped base block 301. Then, slide each packing box 303 into the box-shaped base block 301 along the limiting grooves 305 and stack them. When it needs to be removed, slide it out along the groove. This ensures the positional stability of the packing box 303 within the box-shaped base block 301, preventing the packing box 303 from shaking or shifting, which could lead to uneven adsorption. It also facilitates the installation and disassembly of the packing box 303, and makes it easier to replace and maintain the adsorption packing.

[0044] Furthermore, the bottom inner wall of the box-shaped base block 301 is configured as a recessed flow guiding structure 306.

[0045] After adsorption and purification, the petroleum ether is guided by the recessed flow guiding structure 306 to converge and flow out of the discharge pipe 4. This improves the smoothness of the petroleum ether outflow, reduces the residue of petroleum ether at the bottom of the box-shaped base block 301, and ensures that all the adsorbed and purified petroleum ether can enter the subsequent processes, thereby improving the utilization rate of raw materials and production efficiency.

[0046] Working principle: Crude Class II petroleum ether enters the pretreatment module's processing cabinet 1 through the feed pipe 103. The automated control system controls the feed flow rate through the flow sensor and regulating valve of the feed pipe 103. The petroleum ether first passes through a multi-stage filtration assembly 2. Multiple C-shaped base blocks 201 of the multi-stage filtration assembly 2 are installed via insert guide rails 101. Each C-shaped base block 201 has filter screens 203 with progressively smaller pore sizes for multi-stage filtration. Simultaneously, the flow regulation mechanism can precisely control the opening and closing of the baffles 204 through a synchronous opening and closing mechanism based on pressure changes fed back by the pressure sensor and data from the flow sensor, independently adjusting the flow rate and filtration area of ​​each filter screen 203. The guide slope 211 of the C-shaped base block 201 ensures that the petroleum ether passes evenly through the filter screen. Next, the petroleum ether enters the box-shaped base block 301 of the adsorption and purification unit 3. Multiple packing boxes 303 filled with different adsorbents (such as activated carbon and ion exchange resin) within the box-shaped base block 301 are stably installed via limiting grooves 305 and limiting protrusions. The petroleum ether is adsorbed and purified by contacting the adsorbent through the permeation mesh plate 304. The adsorbed petroleum ether is then guided by the recessed flow guiding structure 306 and flows into the multi-stage distillation column through the discharge pipe 4. The multi-stage distillation column can be a plate or packed distillation column to achieve separation of components with different boiling points. The vapor at the top of the column enters a high-efficiency condensing device (such as a tubular or spiral tube condenser) to condense into liquid. Part of the vapor is returned to the distillation column, and the rest enters an impurity separation device (combining an adsorption column and a membrane separation device) to further remove trace impurities, ultimately yielding high-purity Class II petroleum ether. The entire process is automatically monitored and precisely controlled in real time by various sensors.

[0047] It should be noted that the specific models and specifications of the drive motor 210, multi-stage distillation column, high-efficiency condensation device, impurity separation device, and automatic control system need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0048] The power supply and operating principles of the drive motor 210, the multi-stage distillation column, the high-efficiency condensing device, the impurity separation device, and the automated control system are clear to those skilled in the art and will not be described in detail here.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A purification system for Class II petroleum ethers, comprising a pretreatment module, a multi-stage distillation column, a high-efficiency condenser, and an impurity separation device connected in sequence, characterized in that, The pretreatment module includes a treatment cabinet with an operation port on one side and an operation sealing door rotatably installed on one edge of the operation port. A feed pipe is connected to the top surface of the treatment cabinet. Several sets of corresponding and evenly distributed insert guide rails are provided on the inner walls of both sides of the treatment cabinet. A multi-stage filtration assembly and an adsorption purification mechanism are connected through the several sets of insert guide rails. The multi-stage filtration assembly includes multiple C-shaped blocks, each of which is slidably connected to a corresponding set of insert guide rails. Each C-shaped block is provided with a filtration structure and a flow regulation mechanism. The adsorption purification mechanism includes a box-shaped block, which contains several packing boxes stacked from top to bottom and filled with different adsorption packing materials. The box-shaped block is located at the bottom of all the C-shaped blocks. The bottom end of the box-shaped block is connected to one end of the discharge pipe, and the other end of the discharge pipe extends to the outside of the treatment cabinet through a through hole and is connected to the liquid inlet pipe of the multi-stage distillation column.

2. The purification system for Class II petroleum ethers as described in claim 1, characterized in that: A transparent viewing window is provided on the other side surface of the processing cabinet.

3. The purification system for Class II petroleum ethers as described in claim 1, characterized in that: Each of the C-shaped base blocks has a first connecting groove on both sides corresponding to the insert guide rail. Each first connecting groove is slidably connected to the corresponding insert guide rail. The box-shaped base blocks also have a second connecting groove on both sides corresponding to the insert guide rail. Each second connecting groove is slidably connected to the corresponding insert guide rail.

4. The purification system for Class II petroleum ethers as described in claim 1, characterized in that: The filter structure is a filter screen, which is fixedly connected to the bottom end between the inner walls of the cavity in the middle of the C-shaped base block. The bottom surface of the filter screen is flush with the bottom surface of the C-shaped base block, and the mesh size of the filter screen gradually decreases from top to bottom.

5. The purification system for Class II petroleum ethers as described in claim 1, characterized in that: Each of the flow regulating mechanisms includes two baffles and a device box. The two baffles are respectively disposed at both ends of the bottom surface of the C-shaped base, and the upper surface of each baffle is in contact with the bottom surface of the C-shaped base. The device box is fixedly installed on one side of the bottom surface of the C-shaped base, and the device box is provided with a synchronous opening and closing mechanism and two baffles.

6. The purification system for Class II petroleum ethers as described in claim 5, characterized in that: The synchronous opening and closing mechanism includes two connecting rods. One end of each connecting rod is fixedly connected to the bottom surface of the corresponding baffle. The other ends of the two connecting rods are slidably connected in a connecting groove. The connecting groove is opened on one side surface of the equipment box facing the two baffles. The other end of each connecting rod extends into the inside of the equipment box through the connecting groove and is fixedly connected to a connecting part. One side surface of each connecting part is provided with a threaded hole and threadedly connected to both ends of a bidirectional threaded rod. One end of the bidirectional threaded rod is rotatably connected to the inner wall of one end of the equipment box, and the other end of the bidirectional threaded rod is fixedly connected to one end of the output shaft of the drive motor. The drive motor is fixedly installed on the inner wall of the other end of the equipment box.

7. The purification system for Class II petroleum ethers as described in claim 1, characterized in that: The inner wall of the cavity in the center of each C-shaped base block is configured as a flow guide slope that is concave towards the center.

8. The purification system for Class II petroleum ethers as described in claim 1, characterized in that: Each of the packing boxes is a rectangular structure that runs vertically through the top and bottom, and a permeable mesh plate can be detachably connected between the inner walls of the top and bottom openings.

9. The purification system for Class II petroleum ethers as described in claim 1, characterized in that: Limiting grooves are provided on the inner walls of both sides of the box-shaped base block, and limiting protrusions corresponding to and slidingly engaging with the limiting grooves are integrally provided on both sides of each stuffing box.

10. The purification system for Class II petroleum ethers as described in claim 1, characterized in that: The bottom inner wall of the box-shaped base block is configured with a recessed flow guiding structure.

Images