Treatment line for facilitating the extraction of synthetic esters from activated clay

Abstract

The present invention belongs to the technical field of synthetic ester treatment applications, and particularly relates to a treatment line for facilitating the extraction of synthetic esters from activated clay. The present invention changes the waste clay treated in traditional steps into a pipeline-type treatment. The single-row chain conveyor mechanism is used to continuously receive the waste clay conveyed from the raw material conveying auger. The extraction tank is used to extract the waste clay in the moving storage barrel. The centrifugal mechanism is used to spin-dry the waste clay. At the same time, the guide seat is used to pour out the waste clay from the storage barrel, and then it is conveyed to the water washing tank through the receiving auger and elevator, and then, under subsequent operations such as drying, the extraction of the entire synthetic ester and the regeneration of the activated clay are completed.

Description

Technical Field

[0001] The present invention belongs to the technical field of synthetic ester treatment applications, and particularly relates to a treatment line for facilitating the extraction of synthetic esters from activated clay. Background Art

[0002] Activated clay is an adsorbent mainly made of attapulgite clay and is an ideal substitute for activated carbon. It is widely used in the decolorization and refining processes of various products such as vegetable oil, mineral oil, lubricating oil, and paraffin wax. After the activated clay decolorizes the synthetic ester, it will adsorb a large amount of impurities and also adsorb a relatively large amount of synthetic ester, and then lose its activity to become oil-containing waste activated clay. Among them, the adsorbed synthetic ester accounts for about 20 - 50%. The waste activated clay generated in China's synthetic ester refining and aluminum processing industries can reach the million-ton level every year. For a long time, the treatment method for waste activated clay has been to burn it and then bury it, which not only pollutes the environment but also greatly wastes resources such as petroleum.

[0003] To solve the problem of waste activated clay, various methods have been proposed. Among them, extracting synthetic esters to restore the activity of activated clay is the most commonly used method at present. It mainly extracts waste activated clay with a mixed solution of ethyl acetate and isopropyl alcohol. After the extraction is completed, the waste activated clay is centrifuged again. After the treatment is completed, the waste activated clay is washed again, and after drying, activated clay and synthetic esters can be obtained.

[0004] Although the above method can treat waste clay, obtain the synthetic esters therein and restore the activity of the waste clay, its treatment efficiency is low and the treatment cost is high. For example, during the extraction process, in order to ensure stirrability, the mixed solution and waste clay are generally mixed at a ratio of at least 3:1. In this way, the amount of waste clay treated each time is very small, and when using a larger extraction device, the cost increases significantly. At the same time, in the entire treatment process, the time cost is high. Among them, the extraction time is generally between 15 min and 25 min, the centrifugation time needs to be determined according to the centrifugation volume, and at the same time, it also takes 15 min to 25 min during the water washing process, and the number of water washing times reaches 3 times. In this way, it leads to slow treatment and high consumption of materials. Summary of the Invention

[0005] In view of the technical problems existing in the treatment of existing waste activated clay, the present invention provides a treatment line for facilitating the extraction of synthetic esters from activated clay, which has a reasonable design, a simple method, convenient operation, can realize the continuous treatment of waste activated clay, and is convenient for extracting the synthetic esters therein.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows: The present invention provides a treatment line for facilitating the extraction of synthetic esters from activated clay, including a raw material conveying auger, an extraction centrifuge device, a receiving auger, a hoist, and a water washing tank arranged in sequence along the moving direction of waste clay. Among them, the extraction centrifuge device includes a single-row chain conveying mechanism, which includes a plurality of articulated chain links and rolling bearings. A single-row chain conveying mechanism for circulating up and down is formed between the chain links and the rolling bearings. A loading component for containing waste clay is also arranged on the single-row chain conveying mechanism. The loading components are arranged at intervals on the single-row chain conveying mechanism. The loading component includes an extension rod arranged on the chain link and a connecting rod hinged to the extension rod. A loading rod is sleeved at one end of the connecting rod away from the extension rod. The loading rod is rotatably arranged on the connecting rod. A guide wheel is sleeved on the loading rod. A loading bucket is sleeved at the bottom of the loading rod. The loading rod is rotatably arranged in the loading bucket. Filter holes are provided on the side wall of the loading bucket. The lower layer of the single-row chain conveying mechanism is divided into a material loading part, an extraction part, a centrifugation part, and a discharging part according to functions. Among them, the height of the extraction part is set lower than that of the material loading part, the centrifugation part, and the discharging part. An extraction tank matched with the extraction part and a centrifugation mechanism matched with the centrifugation part are arranged below the single-row chain conveying mechanism. The receiving auger is arranged below the discharging part. A guide seat for controlling the connecting rod to flip by nearly 180 degrees is also arranged on the single-row chain conveying mechanism.

[0007] Preferably, the water washing tank includes a first water washing tank and a second water washing tank, and the hoist is switched and communicated with the first water washing tank and the second water washing tank.

[0008] Preferably, the loading components are symmetrically arranged on both sides of the single-row chain conveying mechanism.

[0009] Preferably, the centrifugation mechanism includes a frame and a centrifugal bucket arranged on the frame. A notch for the loading bucket to pass through is provided on the centrifugal bucket. An opening and closing door is arranged on the outer wall of the centrifugal bucket. A lifting seat and a rotating motor arranged in the lifting seat are arranged in the centrifugal bucket. The power end of the rotating motor is connected with an electromagnet. An electromagnetic push rod is arranged on the frame. The power end of the electromagnetic push rod extends into the centrifugal bucket and is connected with the lifting seat. The material of the loading bucket is nickel.

[0010] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0011] 1. The present invention provides a processing line for facilitating the extraction of synthetic esters from activated clay, which changes the waste clay processed in traditional steps into a pipeline - type processing. The single - row chain conveying mechanism continuously receives the waste clay conveyed from the raw material conveying auger. The extraction tank is used to extract the waste clay in the moving storage barrel, and the centrifugal mechanism is used to spin - dry the waste clay. At the same time, the guide seat is used to pour out the waste clay from the storage barrel, and then it is conveyed to the water - washing tank through the receiving auger and elevator. Furthermore, under subsequent operations such as drying, the extraction of the entire synthetic ester and the regeneration of the activated clay are completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following - described drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] Figure 1 FIG. 1 is a schematic structural diagram of the processing line for facilitating the extraction of synthetic esters from activated clay provided in Embodiment 1;

[0014] Figure 2 FIG. 2 is a schematic structural diagram of the single - row chain conveying mechanism provided in Embodiment 1;

[0015] Figure 3 FIG. 3 is a schematic structural diagram between the chain link and the storage barrel provided in Embodiment 1;

[0016] Figure 4 FIG. 4 is a schematic structural diagram of the centrifugal mechanism provided in Embodiment 1;

[0017] Figure 5 FIG. 5 is a schematic structural diagram between the centrifugal barrel and the sealing door provided in Embodiment 1;

[0018] In the above figures, 1. Raw material conveying auger; 2. Single - row chain conveying mechanism; 21. Chain link; 22. Rolling bearing; 23. Extension rod; 24. Connecting rod; 25. Storage rod; 251. Stirring blade; 26. Guide wheel; 27. Storage barrel; 271. Percolation hole; 3. Receiving auger; 4. Elevator; 5. First water - washing tank; 6. Second water - washing tank; 7. Extraction tank; 8. Centrifugal mechanism; 81. Frame; 82. Centrifugal barrel; 821. Notch; 822. Sealing strip; 823. Sealing door; 824. Gear ring; 83. Lifting seat; 84. Rotating motor; 85. Electromagnet; 86. Electromagnetic push rod; 9. Guide seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To better understand the above-mentioned objects, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0020] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the limitations of the specific embodiments disclosed in the following specification.

[0021] Embodiment 1, as Figure 1 、 Figure 2 shown, the purpose of this embodiment is to provide a processing line that can achieve continuous processing of waste bleaching earth, facilitate continuous processing of waste activated bleaching earth, and extract synthetic esters therefrom. The processing line includes a raw material conveying auger 1, an extraction centrifuge device, a receiving auger 3, a hoist 4, and a water washing tank arranged in sequence along the moving direction of the waste bleaching earth. Among them, the raw material conveying auger 1 is used to supply waste bleaching earth to the extraction centrifuge device. The extraction centrifuge device realizes the extraction of synthetic esters from the waste bleaching earth and the centrifugation of the waste bleaching earth after extraction. The receiving auger 3 and the hoist 4 mainly realize the transfer of the waste bleaching earth from the extraction centrifuge device to the water washing tank, and the water washing tank is used to wash the treated bleaching earth.

[0022] It can also be seen from the functions of the above-mentioned equipment that the main function of realizing continuous processing lies in the extraction centrifuge device. To achieve the above purpose, the extraction centrifuge device provided in this embodiment includes a single-row chain conveying mechanism 2. The single-row chain conveying mechanism 2 includes a plurality of articulated chain links 21 and rolling bearings 22. The chain link 21 is the unit part of the existing common chain, which mainly includes two outer chain links 21 and two inner chain links 21. The outer chain link 21 and the inner chain link 21 are connected in series in the form of a hinge kinematic pair. The rolling bearing 22 is sleeved on the hinge kinematic pair. Since the chain needs to achieve circular motion, the chain needs to form an annular structure. In this embodiment, a single-row chain conveying mechanism 2 that circulates up and down is formed between the chain link 21 and the rolling bearing 22.

[0023] The setting of the single-row chain conveying mechanism 2 is mainly to realize the circular conveying of the waste bleaching earth. To hold the waste bleaching earth, in this embodiment, a holding component for holding the waste bleaching earth is further provided on the single-row chain conveying mechanism 2. The holding components are arranged at intervals on the single-row chain conveying mechanism 2. In this embodiment, a pair of holding components is arranged for every three chain links 21.

[0024] Considering that in addition to containing the waste bleaching clay, the containing component also needs to cooperate with the centrifugal mechanism 8 to complete centrifugation and blanking. Therefore, in this embodiment, the containing component includes an extension rod 23 arranged on the link 21 and a connecting rod 24 hinged to the extension rod 23. The hinge between the connecting rod 24 and the extension rod 23 can achieve at least 180° up and down flipping. A containing rod 25 is sleeved at one end of the connecting rod 24 away from the extension rod 23, and the containing rod 25 is rotatably arranged on the connecting rod 24. In this embodiment, a placement hole is arranged at the end of the connecting rod 24, a bearing is sleeved in the placement hole, and the end of the containing rod 25 is inserted into the bearing to achieve rotational connection. A guide wheel 26 is sleeved on the containing rod 25. The main purpose of the guide wheel 26 is to change the angle between the connecting rod 24 and the extension rod 23 through the contact between the guide wheel 26 and other components. For example, if a horizontal guide plate is placed, making the guide wheel 26 run on the horizontal guide plate can keep the connecting rod 24 and the extension rod 23 horizontally arranged. If no guiding device is set, under the action of gravity, the connecting rod 24 and the extension rod 23 are vertically arranged.

[0025] A containing barrel 27 is sleeved at the bottom of the containing rod 25, and the containing rod 25 is rotatably arranged in the containing barrel 27. Specifically, a bearing is arranged at the bottom of the containing barrel 27, and the containing rod 25 is sleeved in the bearing, enabling the containing barrel 27 to rotate relative to the containing rod 25. Considering that the containing barrel 27 needs to be centrifuged and also extracted, filter holes 271 are provided on the side wall of the containing barrel 27, and the filter holes 271 are evenly distributed on the side wall of the containing barrel 27. In this embodiment, considering the stability of the operation of the entire single-row chain conveyor mechanism 2, the containing barrels 27 are symmetrically arranged on the link 21.

[0026] Considering that the main task of the single-row chain conveyor mechanism 2 is to complete the cyclic conveyance of the holding barrel 27, and the single-row chain conveyor mechanism 2 is arranged for up-and-down circulation. Therefore, in this embodiment, the lower layer of the single-row chain conveyor mechanism 2 is functionally divided into a material loading section, an extraction section, a centrifugation section, and a discharging section. Among them, the material loading section is arranged close to the outlet of the raw material conveying auger 1. In this way, the waste clay coming out of the outlet of the raw material conveying auger 1 will enter the material loading section. The extraction section is mainly used for extraction. Therefore, an extraction tank 7 is arranged below the single-row chain conveyor mechanism 2 and is matched with the extraction section. The main purpose of the extraction tank 7 is to place the extraction liquid. Since the synthetic ester is stratified from the extraction liquid after extraction, an overflow port is arranged on the extraction tank 7. In this way, the extracted synthetic ester will flow out from the overflow port, thus completing the extraction of the synthetic ester. Of course, to ensure the extraction effect and overflow, the extraction liquid needs to be added according to the liquid level height in the extraction tank 7 to achieve oil-liquid separation. It should be noted that starting from the material loading section, the state of the holding barrel 27 needs to be kept vertical. Of course, in the upper layer of the single-row chain conveyor mechanism 2, the state of the holding barrel 27 can be vertical or horizontal, which can be determined according to the size of the holding barrel 27 and the operation conditions of the equipment. In this embodiment, it is in a horizontal state to reduce the pulling force on the single-row chain conveyor mechanism 2.

[0027] Considering that during the extraction process, the waste clay needs to be immersed in the extraction tank 7. Therefore, the height of the extraction section is set lower than that of the material loading section, the centrifugation section, and the discharging section. In this way, by reducing the height, the holding barrel 27 can enter the extraction liquid.

[0028] To achieve extraction, the extraction efficiency can be improved by adding an ultrasonic vibration device to the extraction tank 7. Of course, the vibration time should not be too long to affect the oil-liquid stratification. Of course, it can also be as Figure 3 shown, a stirring blade is sleeved on the holding rod 25. A fixed frame and a guide wheel electromagnet are arranged on one side of the extraction tank 7. The guide wheel 26 is adsorbed by the guide wheel electromagnet to fix the holding rod 25. Then, a driving belt is arranged on the fixed frame. By using the friction between the outer surface of the driving belt and the surface of the holding barrel 27, the rotation of the holding barrel 27 is realized. In this way, the waste clay in the holding barrel 27 is separated under the influence of the stirring blade, so as to come into contact with the extraction liquid more fully.

[0029] The main purpose of the centrifugation section is to cooperate with the centrifugation mechanism 8. The centrifugation section includes a single holding barrel, while the extraction section includes multiple ones. The number of the extraction sections is mainly related to the centrifugation time. For example, the centrifugation time is 5 minutes per batch (less material, shorter centrifugation time), and the extraction time is 25 minutes. Then, 5 holding barrels 27 soaked in the extraction tank 7 are needed, so as to ensure the extraction time.

[0030] Considering that centrifugation is rotation, in this embodiment, a centrifugation mechanism 8 is specifically provided to cooperate with the centrifugation part. The centrifugation mechanism 8 includes a frame 81 and a centrifugation barrel 82 provided on the frame 81. A notch 821 for the passing of the containing barrel 27 is provided on the centrifugation barrel 82. At the same time, an openable and closable sealing door 823 is provided on the outer wall of the centrifugation barrel 82. As shown in Figure 4 , Figure 5 , a sealing strip 822 is provided on both sides of the notch. The sealing door 823 is provided in a cylindrical shape and also has a notch on it. A toothed ring 824 is sleeved on the bottom of its outer side, and an annular track is provided on its inner side. In this way, under the action of the motor, the closing and opening of the notch of the centrifugation barrel 82 can be realized.

[0031] In order to achieve centrifugation, in this embodiment, a lifting seat 83 is provided in the centrifugation barrel 82 and a rotating motor 84 is provided in the lifting seat 83. The power end of the rotating motor 84 is connected with an electromagnet 85. An electromagnetic push rod 86 is provided on the frame 81. The power end of the electromagnetic push rod 86 extends into the centrifugation barrel 82 and is connected with the lifting seat 83. The containing barrel 27 is made of nickel. Since the containing barrel 27 rotates relative to the containing rod 25, by fixing the containing barrel 27 on the electromagnet and rotating it at a high speed under the action of the rotating motor, centrifugation can be achieved without affecting the single-row chain conveying mechanism 2.

[0032] The main purpose of the discharging part is to pour out the clay in the containing barrel 27. In order to collect the poured clay, a receiving auger 3 is provided below the discharging part. The receiving auger 3 is designed with a fully open top. Of course, it can also be a conveyor belt. A guide seat for controlling the nearly 180-degree flipping of the connecting rod 24 is also provided on the single-row chain conveying mechanism 2. The guide seat 9 mainly contacts the guide wheel 26 to continuously increase the height of the guide wheel 26, so as to pour out the clay in the containing barrel 27. It can be an inclined plate or two circular tubes arranged at intervals and inclined.

[0033] Considering that the water washing time is relatively long, the water washing tank includes a first water washing tank 5 and a second water washing tank 6. The elevator 4 is switched and communicated between the first water washing tank 5 and the second water washing tank 6. In this way, it can be ensured that after the clay in one water washing tank is stored well, the other water washing tank has just been washed three times with water, so as to realize continuous production.

[0034] Through the above settings, the waste clay first passes through the raw material conveying auger 1 and is conveyed into the containing barrel of the feeding part. Under the operation of the single-row chain conveying mechanism 2, the containing barrel with waste clay enters the extraction tank 7. After extraction, it is then moved into the centrifugation mechanism 8 to complete centrifugation. After being guided and poured by the guide seat, the treated clay enters the receiving auger 3 and then enters the water washing tank through the elevator 4, thus realizing a streamlined treatment.

[0035] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A processing line for extracting synthetic esters from activated clay, characterized in that: The invention comprises a raw material conveying auger, an extraction centrifugal device, a material receiving auger, an elevator and a washing tank which are arranged in this order along the moving direction of the waste clay, wherein the extraction centrifugal device comprises a single-row chain conveying mechanism, the single-row chain conveying mechanism comprises a plurality of hinged chain links and rolling bearings, a single-row chain conveying mechanism which circulates up and down is formed between the chain links and the rolling bearings, a holding component for holding the waste clay is also arranged on the single-row chain conveying mechanism, the holding components are arranged at intervals on the single-row chain conveying mechanism, the holding components comprise an extension rod arranged on the chain link and a connecting rod hinged to the extension rod, the end of the connecting rod away from the extension rod is provided with a holding rod, and the holding rod is arranged on the end of the connecting rod The release rod is rotatably arranged on the connecting rod, the containing rod is provided with a guide wheel, the bottom of the containing rod is provided with a containing barrel, the containing rod is rotatably arranged in the containing barrel, the side wall of the containing barrel is provided with a percolation hole, and the lower layer of the single-row chain conveying mechanism is functionally divided into a containing part, an extraction part, a centrifugal part and a pouring part, wherein the height of the extraction part is lower than that of the containing part, the centrifugal part and the pouring part, an extraction tank matched with the extraction part and a centrifugal mechanism matched with the centrifugal part are arranged below the single-row chain conveying mechanism, the material receiving auger is arranged below the pouring part, and a guide seat for controlling the connecting rod to flip nearly 180 degrees is also arranged on the single-row chain conveying mechanism.

2. The processing line for extracting synthetic esters from activated clay according to claim 1, characterized in that: The water washing tank comprises a first water washing tank and a second water washing tank, and the elevator is switched and connected with the first water washing tank and the second water washing tank.

3. The processing line for extracting synthetic esters from activated clay according to claim 2, characterized in that: The containing components are symmetrically arranged on both sides of the single-row chain conveying mechanism.

4. The processing line for extracting synthetic esters from activated clay according to claim 3, characterized in that: The centrifugal mechanism includes a frame and a centrifugal bucket arranged on the frame, the centrifugal bucket is provided with a notch for the containing bucket to pass through, the outer wall of the centrifugal bucket is provided with an openable and closable sealing door, a lifting seat and a rotating motor arranged in the lifting seat are arranged in the centrifugal bucket, the power end of the rotating motor is connected to an electromagnet, an electromagnetic push rod is arranged on the frame, the power end of the electromagnetic push rod extends into the centrifugal bucket and is connected to the lifting seat, and the containing bucket is made of nickel.

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