An apparatus and method for producing a softener from extracted oil

Abstract

The present invention discloses a device for processing and producing a softening agent from extracted oil, comprising: an extraction device and an atmospheric evaporation device; the extraction device includes a tower body, which successively includes a lower clarification section, a mixing section, and an upper clarification section from bottom to top. The lower clarification section is provided with a light-phase inlet, and a heavy-phase outlet is further provided below the light-phase inlet. The upper clarification section is provided with a heavy-phase inlet, and a light-phase outlet is arranged above the heavy-phase inlet. The heavy-phase outlet is connected to the input port of the atmospheric evaporation device. By adding the extracted oil and a C8-C12 alkane oil solvent into the extraction device for extraction and then performing atmospheric evaporation treatment, the present invention separates the ideal components and non-ideal components in the extracted oil. Subsequently, the ideal components can be used for producing base oil, and the non-ideal components can be used for producing the softening agent, greatly improving the resource utilization rate and reducing the use cost.

Description

Technical Field

[0001] The present invention relates to the technical field of waste lubricating oil treatment, and particularly to a device and method for processing and producing softeners from extracted oil. Background Art

[0002] Lubricating oil is composed of base oil and a certain content of additives. After being used for a period of time, lubricating oil will lose its normal function and become waste lubricating oil due to reasons such as impurity introduction and additive deterioration. With the development of technology and the improvement of environmental protection requirements, waste lubricating oil can be processed to obtain regenerated base oil. In its specific steps, the fractionating oil is extracted by a polar solvent NMP (N-Methyl pyrrolidone), and a raffinate and an extract are obtained. After the extract is subjected to vacuum distillation, NMP and extracted oil are obtained. The extracted oil contains ideal components (saturated hydrocarbons 20 - 50%) for producing type II base oil and non-ideal components (aromatic hydrocarbons 48 - 78%, gum and asphaltene 2%). If the extracted oil is not further processed, not only the resource utilization rate is reduced, but also the use cost is increased. Therefore, we propose a device and method for processing and producing softeners from extracted oil, which can separate the ideal components and non-ideal components in the extracted oil, so that the ideal components can be used for producing base oil and the non-ideal components can be used for producing softeners. Summary of the Invention

[0003] The purpose of the present invention is to provide a device and method for processing and producing softeners from extracted oil, so as to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A device for processing and producing softeners from extracted oil includes: an extraction device and an atmospheric evaporation device;

[0006] The extraction device includes a tower body, which successively includes a lower clarification section, a mixing section, and an upper clarification section from bottom to top. The lower clarification section is provided with a light phase inlet, and a heavy phase outlet is further provided below the light phase inlet. The upper clarification section is provided with a heavy phase inlet, and a light phase outlet is arranged above the heavy phase inlet. The heavy phase outlet is connected to the input port of the atmospheric evaporation device;

[0007] A rotating device is provided on the tower body. The output end of the rotating device extends into the mixing section from the upper clarification section through a rotating shaft and is coaxial with the tower body. A plurality of fixed rings coaxial with the rotating shaft are provided on the inner wall of the mixing section from top to bottom. Turntables are arranged at positions on the outer wall of the rotating shaft between adjacent two fixed rings;

[0008] The upper surface of the fixed ring is attached with a scraper assembly, and one end of the scraper assembly is connected to the outer wall of the rotating shaft.

[0009] A further improvement is that the scraper assembly includes a connecting part and a scraper body, one end of the connecting part is detachably connected to the outer wall of the rotating shaft, and the other end is connected to the scraper body, the connecting part is driven by the rotating shaft to rotate the scraper body along the circumferential direction of the rotating shaft, the bottom of the scraper body is in contact with the upper surface of the fixing ring, and a discharge port is provided on the fixing ring.

[0010] A further improvement is that a groove is provided at the top of the scraper body for the other end of the connecting part to extend into, a connecting plate is detachably provided at the notch of the groove, and the connecting plate is movably mounted on the outer wall of the other end of the connecting part and connected to the outer wall of the connecting part through a tension spring, and a counterweight block is provided at the bottom of the groove.

[0011] A further improvement is that an indicator mark which fits the outer wall of the connecting portion is provided on one side of the connecting plate, and a scale plate which matches the indicator mark is embedded on the outer wall of one side of the connecting plate;

[0012] The tower body is made of hard glass.

[0013] A further improvement is that the scraper body is provided with guide blocks at both ends of one side along the circumferential direction, the vertical section of the guide blocks is a right triangle, and the two groups of guide blocks are respectively located at the outer edge and the inner edge of the top surface of the fixing ring.

[0014] A further improvement is that a side push plate is provided between the two groups of guide blocks, the bottom end of the side push plate is in contact with the outer wall of the scraper body facing the guide block, elastic rods are provided on the outer walls on both sides of the side push plate, and the other end of the elastic rod is provided with a movable scraper blade that is in contact with the inclined surface of the guide block, the top surface of the side push plate is connected to a protrusion on the outer wall of the scraper body through an elastic connecting piece, and a driving part is provided on the scraper body to drive the side push plate to move downward.

[0015] A further improvement is that the driving part includes a contact roller, a worm, a worm wheel, a top driving wheel and a transmission group;

[0016] The contact roller is arranged on the inner side of the fixed ring and contacts the circumferential inner wall of the fixed ring. The contact roller is sleeved on the outer wall of the shaft body. The shaft body is arranged on the inner outer wall of the scraper body through a bearing and a bracket. The worm is arranged at one end of the shaft body. The worm wheel is rotated by the rotating shaft 1 and is arranged in a recess opened on the inner outer wall of the scraper body and meshes with the worm. The driving wheel is eccentrically arranged above the side push plate through the rotating shaft 2 and abuts against the top surface of the side push plate. One end of the rotating shaft 1 and the rotating shaft 2 both pass through the side of the scraper body away from the guide block and are connected through the transmission group.

[0017] A method for producing a softener by processing extracted oil, using the above-mentioned device, specifically comprises the following steps:

[0018] S1: Add the extracted oil and C8 - C12 alkane oil solvent into the tower body through the heavy - phase inlet and the light - phase inlet respectively, and then obtain the light - phase extract and the heavy - phase extract from the light - phase outlet and the heavy - phase outlet respectively;

[0019] S2: The heavy - phase extract discharged from the heavy - phase outlet in step S1 enters the atmospheric evaporation equipment for atmospheric evaporation to obtain part of the C8 - C12 alkane oil solvent and the ideal components of non - base oil;

[0020] S3: Use the ideal components of non - base oil in step S2 to produce softeners.

[0021] Further improvement lies in that the volume ratio of the extracted oil to the C8 - C12 alkane oil solvent in step S1 is 1:1 - 2.

[0022] Further improvement lies in that the atmospheric evaporation temperature in step S2 is 180°C - 220°C.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1) By adding the extracted oil and the C8 - C12 alkane oil solvent into the extraction equipment for extraction and then performing atmospheric evaporation treatment, the present invention separates the ideal components and non - ideal components in the extracted oil. Subsequently, the ideal components can be used for the production of base oil, and the non - ideal components can be used for the production of softeners, greatly improving the resource utilization rate and reducing the use cost;

[0025] 2) The extraction equipment set in the present invention has a scraper assembly. When extracting the extracted oil and the C8 - C12 alkane oil solvent, it effectively prevents impurities such as gum and asphaltene from adhering and gradually accumulating on the top surface of the fixed ring, forming a flow dead zone, which affects the normal operation of the equipment and ensures the stability of the extraction operation. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the present invention;

[0027] Figure 2 It is a sectional view of the mixing section structure in the present invention;

[0028] Figure 3 It is the present invention Figure 2 in a partial structural schematic diagram;

[0029] Figure 4 It is a schematic diagram of the scraper assembly structure in the present invention;

[0030] Figure 5 It is the present invention Figure 4 in a partial sectional view of the structure;

[0031] Figure 6 It is a schematic diagram of the driving part structure in the present invention;

[0032] Figure 7 For the present invention Figure 6 Schematic diagram of the structure from another perspective.

[0033] In the figure: 1. Tower body; 101. Mixing section; 102. Light phase inlet; 103. Heavy phase outlet; 104. Heavy phase inlet; 105. Light phase outlet; 2. Rotating device; 3. Fixed ring; 31. Discharge port; 4. Turntable; 5. Scraper assembly; 51. Connection part; 52. Scraper body; 53. Connection plate; 54. Pull spring; 55. Counterweight; 56. Indicator; 57. Scale plate; 58. Guide block; 59. Side push plate; 510. Movable scraper; 511. Elastic connection; 512. Contact roller; 513. Worm; 514. Worm gear; 515. Transmission group; 516. Pushing wheel. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1

[0036] Please refer to the attached Figure 1-2 , a device for processing and producing softener from extracted oil, including: extraction equipment and atmospheric evaporation equipment; among them, the atmospheric evaporation equipment belongs to the prior art and will not be described in detail here;

[0037] The extraction equipment includes a tower body 1. The tower body 1 successively includes a lower clarification section, a mixing section 101, and an upper clarification section from bottom to top. The lower clarification section is provided with a light phase inlet 102 for C8-C12 alkane oil solvent to enter. Below the light phase inlet 102, there is also a heavy phase outlet 103 for discharging heavy phase extract. The upper clarification section is provided with a heavy phase inlet 104 for extracted oil to enter. Above the heavy phase inlet 104, there is a light phase outlet 105 for discharging light phase extract. The heavy phase outlet 103 is connected to the input port of the atmospheric evaporation equipment;

[0038] A rotating device 2 is provided on the tower body 1. The output end of the rotating device 2 extends into the mixing section 101 from the upper clarification section through a rotating shaft and is coaxial with the tower body 1. A plurality of groups of fixed rings 3 coaxial with the rotating shaft are provided on the inner wall of the mixing section 101 from top to bottom. Turntables 4 are provided at positions on the outer wall of the rotating shaft and between adjacent two groups of fixed rings 3. There is a certain distance between the turntable 4 and the adjacent two groups of fixed rings 3. The turntable 4 is driven to rotate by the rotating device 2 to process the C8-C12 alkane oil solvent and the extracted oil in the tower body 1;

[0039] A scraping plate assembly 5 is attached to the upper surface of the fixed ring 3, and one end of the scraping plate assembly 5 is connected to the outer wall of the rotating shaft. Considering that the extracted oil still contains gum and asphaltene, during the process of flowing from top to bottom in the tower body 1 and discharging towards the heavy phase outlet 103, in order to prevent gum and asphaltene from adhering and gradually accumulating on the top surface of the fixed ring 3, forming a dead zone for flow and affecting the normal operation of the equipment, the top surface of the fixed ring 3 is cleaned by the scraping plate assembly 5 rotating with the rotating equipment 2.

[0040] Please refer to the appendix Figures 3-5 Preferably, the scraping plate assembly 5 of this embodiment includes a connecting portion 51 and a scraping plate main body 52. One end of the connecting portion 51 is detachably connected to the outer wall of the rotating shaft, and the other end is connected to the scraping plate main body 52. The connecting portion 51 drives the scraping plate main body 52 to rotate along the circumferential direction of the rotating shaft by the outer wall of the rotating shaft. The bottom of the scraping plate main body 52 is attached to the upper surface of the fixed ring 3, and a discharge port 31 is provided on the fixed ring 3. With this arrangement, when the rotating equipment 2 is working, the connecting portion 51 causes the scraping plate main body 52 to perform a circular motion on the fixed ring 3, scraping the impurities accumulated on the fixed ring 3 off the fixed ring 3. At the same time, during the circular motion, the scraping plate main body 52 can push some impurities to be discharged downward through the discharge port 31.

[0041] Please refer to the appendix Figures 3-5 Preferably, a groove for the other end of the connecting portion 51 to extend into is provided at the top of the scraping plate main body 52 of this embodiment. A connecting plate 53 is detachably provided at the notch of the groove, and the connecting plate 53 is movably sleeved on the outer wall of the other end of the connecting portion 51 and is connected to the outer wall of the connecting portion 51 by a tension spring 54. A weight block 55 is provided at the bottom of the groove. With this arrangement, the scraping plate main body 52 is always in contact with the fixed ring 3 under the action of the weight block 55, and there will be no gap between the scraping plate main body 52 and the fixed ring 3 due to the wear of the scraping plate main body 52, affecting the impurity removal effect.

[0042] Preferably, an indicator mark 56 that fits the outer wall of the connecting portion 51 is provided on one side of the connecting plate 53 of this embodiment, and a scale plate 57 that cooperates with the indicator mark 56 is embedded on one outer wall of the connecting plate 53;

[0043] The material of the tower body 1 is hard glass. The scraping plate main body 52 moves relative to the connecting portion 51 under the action of the weight block 55, thereby causing the value of the indicator mark 56 corresponding to the scale plate 57 to change. Since the material of the tower body 1 is hard glass, the staff can observe the value of the indicator mark 56 corresponding to the scale plate 57 from the outside to understand the wear degree of the scraping plate main body 52, so as to replace the scraping plate main body 52.

[0044] Please refer to the appendix Figures 6-7, Preferably, at both ends of one side of the scraping plate body 52 in the circumferential direction, guide blocks 58 are integrally provided oppositely. The vertical cross-section of the guide block 58 is a right triangle, and the two groups of guide blocks 58 are respectively located at the outer edge and the inner edge of the top surface of the fixed ring 3. Through this setting, when the scraping plate body 52 moves circumferentially on the fixed ring 3, the impurities accumulated on the fixed ring 3 are pushed and are on one side of the scraping plate body 52 in the circumferential direction. The guide blocks 58 play a role in blocking and guiding the impurities, so that the impurities move towards the center of the scraping plate body 52 and upwards, and are not likely to remain on the outer edge of the fixed ring 3 or fall onto the upper surface of the turntable 4 from the inner edge of the fixed ring 3.

[0045] , Preferably, a side pushing plate 59 is provided between the two groups of guide blocks 58 of this embodiment. The bottom end of the side pushing plate 59 fits against the outer wall of the scraping plate body 52 facing the guide block 58. Elastic rods are provided on both outer walls of the side pushing plate 59. The elastic rods are, for example, elastic telescopic rods, and the other ends of the elastic rods are provided with movable scraping blades 510 that fit against the inclined surfaces of the guide blocks 58. When the side pushing plate 59 moves downwards, it drives the movable scraping blades 510 to scrape the impurities at the inclined surfaces of the guide blocks 58. At the same time, the side pushing plate 59 scrapes the outer wall of the side of the scraping plate body 52 in contact with the impurities, preventing the impurities from remaining on the outer wall of the scraping plate body 52; the top surface of the side pushing plate 59 is connected to a convex block on the outer wall of the scraping plate body 52 through an elastic connecting member 511, and a driving part for driving the side pushing plate 59 to move downwards is provided on the scraping plate body 52.

[0046] , Preferably, the driving part of this embodiment includes a contact roller 512, a worm 513, a worm gear 514, a pushing wheel 516, and a transmission group 515;

[0047] The contact roller 512 is arranged on the inner side of the fixed ring 3 and contacts the circumferential inner wall of the fixed ring 3. The contact roller 512 is sleeved on the outer wall of the shaft; the shaft is arranged on the inner outer wall of the scraper body 52 through a bearing and a bracket (the bracket is fixed to the inner outer wall of the scraper body 52, the shaft passes through the bracket, and the bearing is arranged at the connection between the shaft and the bracket), the worm 513 is arranged at one end of the shaft, and the worm wheel 514 is rotated by the rotating shaft one and is arranged in a recess opened on the inner outer wall of the scraper body 52 and meshes with the worm 513. The driving wheel 516 is eccentrically arranged above the side push plate 59 through the rotating shaft two and abuts against the top surface of the side push plate 59. One end of the rotating shaft one and the rotating shaft two both pass through the side of the scraper body 52 away from the guide block 58 and are connected through the transmission group 515. The transmission group 515 can adopt a belt and a pulley or a gear part, which is not described in detail here. When the scraper body 52 moves in a circle along the fixed ring 3, under the action of friction force, the contact roller 512 drives the shaft to rotate, and then the shaft drives the worm 513 to drive the worm wheel 514, the worm wheel 514 drives the rotating shaft one, and the rotating shaft one drives the rotating shaft two through the transmission group 515, so that the pushing wheel 516 eccentrically rotates to push the side push plate 59 intermittently downward, so that the impurities scraped out by the scraper body 52 are not easily retained on the scraper body 52.

[0048] A method for producing a softener by processing extracted oil, using the above-mentioned device, specifically comprises the following steps:

[0049] S1: Add the extracted oil and C8-C12 alkane oil solvent into the tower body 1 from the heavy phase inlet 104 and the light phase inlet 102, respectively, the volume ratio of the extracted oil and the C8-C12 alkane oil solvent is 1:1-2, the rotating device 2 drives the turntable 4 to rotate, and the C8-C12 alkane oil solvent and the extracted oil in the tower body 1 are extracted (the extraction temperature is 20°C-40°C), and then the light phase extract and the heavy phase extract are obtained from the light phase outlet 105 and the heavy phase outlet 103, respectively;

[0050] S2: The heavy phase extract discharged from the heavy phase outlet 103 in step S1 enters a normal pressure evaporation device for normal pressure evaporation at a temperature of 180° C. to 220° C. to obtain a portion of C8 to C12 alkane oil solvents and non-base oil ideal components;

[0051] It should be noted that the light phase extract discharged from the light phase outlet 105 in step S1 can also enter the atmospheric pressure evaporation equipment for atmospheric pressure evaporation, and the atmospheric pressure evaporation temperature is 180°C to 220°C to obtain part of the C8-C12 alkane oil solvent and the ideal base oil component. The part of the C8-C12 alkane oil solvent obtained after the evaporation of the light phase extract or the heavy phase extract can be recycled in the subsequent use, and the ideal base oil component is used to regenerate the base oil;

[0052] S3: Use the ideal components of non-base oil in step S2 to produce softeners. The aromatic hydrocarbons, resins, and asphaltenes in the ideal components of non-base oil are used as softeners, which can be applied to the production of rubber products. This belongs to the prior art and will not be elaborated here.

[0053] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An apparatus for processing and producing softener from extracted oil, characterized in that: Including: An extraction device and an atmospheric evaporation device; The extraction device includes a tower body (1), and the tower body (1) sequentially includes a lower clarification section, a mixing section (101) and an upper clarification section from bottom to top. The lower clarification section is provided with a light phase inlet (102), and a heavy phase outlet (103) is further provided below the light phase inlet (102). The upper clarification section is provided with a heavy phase inlet (104), and a light phase outlet (105) is arranged above the heavy phase inlet (104). The heavy phase outlet (103) is connected to the input port of the atmospheric evaporation device; A rotating device (2) is provided on the tower body (1). The output end of the rotating device (2) extends into the mixing section (101) from the upper clarification section through a rotating shaft and is coaxial with the tower body (1). A plurality of fixed rings (3) coaxial with the rotating shaft are arranged on the inner wall of the mixing section (101) from top to bottom. Turntables (4) are arranged on the outer wall of the rotating shaft at positions between adjacent two groups of fixed rings (3); A scraping plate assembly (5) is attached to the upper surface of the fixed ring (3), and one end of the scraping plate assembly (5) is connected to the outer wall of the rotating shaft; The scraping plate assembly (5) includes a connecting part (51) and a scraping plate main body (52). One end of the connecting part (51) is detachably connected to the outer wall of the rotating shaft, and the other end is connected to the scraping plate main body (52). The connecting part (51) drives the scraping plate main body (52) to rotate along the circumferential direction of the rotating shaft. The bottom of the scraping plate main body (52) is attached to the upper surface of the fixed ring (3), and a discharge port (31) is formed on the fixed ring (3); A groove for the other end of the connecting part (51) to extend into is formed at the top of the scraping plate main body (52). A connecting plate (53) is detachably arranged at the notch of the groove, and the connecting plate (53) is movably sleeved on the outer wall of the other end of the connecting part (51) and is connected to the outer wall of the connecting part (51) through a tension spring (54). A weight block (55) is arranged at the bottom of the groove; An indicating mark (56) that fits the outer wall of the connecting part (51) is arranged on one side of the connecting plate (53), and a scale plate (57) that cooperates with the indicating mark (56) is embedded on the outer wall of one side of the connecting plate (53); The material of the tower body (1) is hard glass; Guide blocks (58) are integrally arranged at both ends of one side of the scraping plate main body (52) along the circumferential direction; A side pushing plate (59) is arranged between the two groups of guide blocks (58). The bottom end of the side pushing plate (59) is attached to the outer wall of the scraping plate main body (52) facing the guide block (58). Elastic rods are arranged on both outer walls of the side pushing plate (59), and movable scraping pieces (510) that fit the inclined surfaces of the guide blocks (58) are arranged at the other ends of the elastic rods. The top surface of the side pushing plate (59) is connected to a convex block on the outer wall of the scraping plate main body (52) through an elastic connecting piece (511). A driving part for driving the side pushing plate (59) to move downward is arranged on the scraping plate main body (52).

2. The device according to claim 1, characterized in that: The vertical cross-section of the guide block (58) is a right triangle, and the two groups of guide blocks (58) are respectively located at the outer edge and the inner edge of the top surface of the fixed ring (3).

3. The device according to claim 1, characterized in that: The driving part includes a contact roller (512), a worm (513), a worm wheel (514), a pushing wheel (516) and a transmission group (515); The contact roller (512) is arranged inside the fixed ring (3) and contacts the circumferential inner wall of the fixed ring (3). The contact roller (512) is sleeved on the outer wall of the shaft body. The shaft body is arranged on the inner outer wall of the scraper body (52) through a bearing and a bracket. The worm (513) is arranged at one end of the shaft body. The worm wheel (514) is rotatably arranged in a notch formed in the inner outer wall of the scraper body (52) through a first rotating shaft and meshes with the worm (513). The pushing wheel (516) is eccentrically arranged above the side pushing plate (59) through a second rotating shaft and abuts against the top surface of the side pushing plate (59). One ends of the first rotating shaft and the second rotating shaft both penetrate through one side of the scraper body (52) away from the guiding block (58) and are in transmission connection through the transmission group (515).

4. A method for processing and producing a softener from extracted oil, using the device according to any one of claims 1-3, characterized in that: Specifically, it includes the following steps: S1: The extracted oil and the C8-C12 alkane oil solvent are respectively added into the tower body (1) from the heavy-phase inlet (104) and the light-phase inlet (102). The rotating device (2) drives the rotating disc (4) to rotate, and the C8-C12 alkane oil solvent and the extracted oil in the tower body (1) are subjected to extraction treatment. Subsequently, the light-phase extract and the heavy-phase extract are respectively obtained from the light-phase outlet (105) and the heavy-phase outlet (103); S2: The heavy-phase extract discharged from the heavy-phase outlet (103) in step S1 enters an atmospheric evaporation device for atmospheric evaporation to obtain a part of the C8-C12 alkane oil solvent and the ideal components of non-base oil; S3: The ideal components of non-base oil in step S2 are used to produce a softening agent.

5. The method according to claim 4, characterized in that: In the step S1, the volume ratio of the extracted oil to the C8-C12 alkane oil solvent is 1:1-2.

6. The method according to claim 4, characterized in that: The atmospheric evaporation temperature in the step S2 is 180°C-220°C.

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