Aromatic and non-aromatic hydrocarbon high-efficiency separation device

Abstract

The utility model discloses a kind of aromatic and non-aromatic high-efficiency separation devices, it is related to separation device technical field, including tank body, the bottom of the tank body is fixedly connected with the multiple support legs of circumferential distribution, the front of the tank body is fixedly connected with feed pipe, the bottom of the tank body is fixedly connected with discharge pipe, the left and right sides of the tank body are fixedly connected with discharge pipe, the top of the tank body is slidably connected with tank cover, separation mechanism is provided on the tank cover, limit mechanism is provided on the tank cover, heating rod is provided in the bottom of tank body inside, the limit mechanism includes the sealing gasket of tank cover inner top wall fixed connection.The utility model discloses a kind of aromatic and non-aromatic high-efficiency separation devices, it is convenient to extract separation mechanism and stirring assembly from the inside of tank body, then it is convenient to maintain separation mechanism and stirring assembly, it is also convenient to clean inside tank body, it is convenient to carry out separation operation next time.

Description

Technical Field

[0001] This utility model relates to the field of separation device technology, and in particular to a high-efficiency separation device for aromatic and non-aromatic hydrocarbons. Background Technology

[0002] In industrial production, benzene, toluene, and xylene are mainly recovered from catalytic reforming liquid or from cracked gasoline used in the production of hydrocarbon byproducts. This requires the addition of extractants for distillation. Commonly used extractants include diethylene glycol ether, triethylene glycol ether, sulfolane, and dimethyl sulfoxide. During distillation, aromatic molecules rise and are discharged after cooling. The non-aromatic residue after the aromatics are extracted is called raffinate. Raffinate mainly consists of C6-C8 alkanes and a certain amount of cycloalkanes. It is a good petrochemical feedstock and can be used for hydrocarbon cracking to produce ethylene.

[0003] Chinese patent document CN215404046U discloses a short-range aromatic raffinate stirring and separation device, including a distillation body, a temperature controller, a heating rod, a hollow plate, a connecting pipe, a condenser plate, two sets of guide plates, and two sets of discharge pipes. The distillation body has a chamber inside, and the middle part of the left and right ends is provided with a liquid injection pipe and an extractant injection pipe, and the bottom end is provided with a discharge pipe. It also includes a motor, two sets of rotating shafts, multiple sets of first stirring rods, two sets of first bevel gears, two sets of second bevel gears, a stirring shaft, two sets of fixing blocks, and multiple sets of second stirring rods. The motor is fixed on the left side of the bottom end of the distillation body.

[0004] The existing technology has the following problems:

[0005] However, it is inconvenient to clean and maintain the inside of the separation device after the separation operation, resulting in residual impurities inside affecting the effect of the next separation operation. Utility Model Content

[0006] This invention provides a highly efficient separation device for aromatic and non-aromatic hydrocarbons to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A high-efficiency separation device for aromatic and non-aromatic hydrocarbons includes a tank body, a plurality of circumferentially distributed support legs fixedly connected to the bottom of the tank body, a feed pipe fixedly connected to the front of the tank body, a discharge pipe fixedly connected to the bottom of the tank body, discharge pipes fixedly connected to the left and right sides of the tank body, a tank cover slidably connected to the top of the tank body, a separation mechanism provided on the tank cover, a limit mechanism provided on the tank cover, and a heating rod provided at the bottom of the inner side of the tank body.

[0009] The limiting mechanism includes a sealing gasket fixedly connected to the inner top wall of the can lid, a plurality of rectangularly distributed positioning rods fixedly connected to the inner top wall of the can lid, and a box body fixedly connected to both the front and back of the can lid.

[0010] The separation mechanism includes a protective shell fixedly connected to the inner top wall of the tank lid. A plurality of rectangularly distributed connecting rods are fixedly connected to the bottom of the protective shell. A condensing plate is fixedly connected to the bottom of the plurality of connecting rods, and a fixing pipe is fixedly connected to the bottom of the condensing plate.

[0011] Preferably, both of the housings are slidably connected to limit rods inside, both limit rods are fixedly connected to connecting plates on their outer sides, and both limit rods are sleeved with springs on their outer sides.

[0012] Preferably, the top of the can lid has a plurality of circumferentially distributed positioning grooves, the size of the positioning rod is adapted to the size of the positioning grooves, the front and back of the can body are provided with limiting grooves, the size of the limiting rod is adapted to the size of the limiting grooves, and one end of the limiting rod is inclined.

[0013] Preferably, a guide plate is fixedly connected to the outside of the fixed tube, a hollow plate is fixedly connected to one end of the fixed tube, a plurality of circumferentially distributed connecting through holes are fixedly connected to the bottom of the hollow plate, discharge holes are fixedly connected to both the left and right sides of the fixed tube, and a stirring assembly is provided on the tank cover.

[0014] Preferably, the outer sides of the condenser plate, the guide plate, and the hollow plate are all fixedly connected with sealing rings, and the outer sides of the sealing rings are slidably connected to the inner wall of the tank.

[0015] Preferably, the stirring assembly includes a motor fixedly mounted to the top of the tank lid, the output shaft of the motor is fixedly connected to a rotating shaft, a first gear is fixedly connected to the outer side of the rotating shaft, a plurality of circumferentially distributed stirring rods are rotatably connected inside the protective shell, a second gear is fixedly connected to the top of the outer side of each of the plurality of stirring rods, the outer side of the first gear meshes with the outer side of the plurality of second gears, and the outer side of the plurality of stirring rods is rotatably connected to the interior of the condenser plate, the guide plate and the hollow plate.

[0016] Preferably, the feed pipe is located on the lower side of the hollow plate, one end of the discharge pipe is located at the lowest point of the guide plate, and the discharge pipe is inclined.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This utility model provides a high-efficiency separation device for aromatic and non-aromatic hydrocarbons. By setting a separation mechanism, the device achieves the effect of limiting and fixing the tank cover, thereby facilitating the horizontal and vertical fixing of the tank cover and increasing the stability of the tank cover after installation. By setting a sealing gasket, the sealing performance after installation is increased. At the same time, it is convenient to pull out the separation mechanism and stirring assembly from the inside of the tank, which facilitates the maintenance of the separation mechanism and stirring assembly, as well as the cleaning of the inside of the tank, making it convenient for the next separation operation.

[0019] 2. This utility model provides a high-efficiency separation device for aromatic and non-aromatic hydrocarbons. By setting up a stirring assembly, multiple stirring rods are used to stir the reforming liquid and the extractant. The size of the first gear is larger than that of the second gear, thereby improving the stirring efficiency and thus improving the separation efficiency of aromatic and non-aromatic hydrocarbons. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the tank structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the limiting mechanism structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the separation mechanism of this utility model;

[0024] Figure 5 This is a schematic diagram of the stirring assembly structure of this utility model.

[0025] In the diagram: 1. Tank body; 2. Support leg; 3. Feed pipe; 4. Discharge pipe; 5. Discharge tube; 6. Tank cover; 7. Separation mechanism; 8. Limiting mechanism; 9. Heating rod; 71. Protective shell; 72. Connecting rod; 73. Condensing plate; 74. Fixing pipe; 75. Guide plate; 76. Hollow plate; 77. Connecting through hole; 78. Discharge hole; 79. Stirring assembly; 791. Motor; 792. Rotating shaft; 793. First gear; 794. Stirring rod; 795. Second gear; 710. Sealing ring; 81. Sealing gasket; 82. Positioning rod; 83. Box body; 84. Limiting rod; 85. Connecting plate; 86. Spring. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figures 1-5As shown, an efficient separation device for aromatic and non-aromatic hydrocarbons includes a tank 1. Multiple circumferentially distributed support legs 2 are fixedly connected to the bottom of the tank 1. A feed pipe 3 is fixedly connected to the front of the tank 1. A discharge pipe 4 is fixedly connected to the bottom of the tank 1. Discharge pipes 5 are fixedly connected to both the left and right sides of the tank 1. A tank cover 6 is slidably connected to the top of the tank 1. A separation mechanism 7 is provided on the tank cover 6. A limit mechanism 8 is provided on the tank cover 6. A heating rod 9 is provided on the bottom inner side of the tank 1.

[0028] The limiting mechanism 8 includes a sealing gasket 81 fixedly connected to the inner top wall of the can lid 6, a plurality of rectangularly distributed positioning rods 82 fixedly connected to the inner top wall of the can lid 6, and a box body 83 fixedly connected to both the front and back of the can lid 6.

[0029] The separation mechanism 7 includes a protective shell 71 fixedly connected to the inner top wall of the tank cover 6. A plurality of rectangularly distributed connecting rods 72 are fixedly connected to the bottom of the protective shell 71. A condensing plate 73 is fixedly connected to the bottom of the plurality of connecting rods 72. A fixing pipe 74 is fixedly connected to the bottom of the condensing plate 73.

[0030] It should be noted that the support leg 2 is fixed with bolts to increase the stability of the separation device during use.

[0031] like Figures 1-5 As shown, both housings 83 have slidingly connected limit rods 84 inside, and both limit rods 84 have fixedly connected connecting plates 85 on their outer sides. Both limit rods 84 have springs 86 sleeved on their outer sides.

[0032] It should be noted that pulling the two limiting rods 84 in opposite directions causes the connecting plate 85 to compress and contract the spring 86, thereby pulling the limiting rods 84 out of the limiting groove. Then, pulling the tank cover 6 upward causes the positioning rod 82 to be pulled out of the positioning groove, which facilitates the removal of the separation mechanism 7 and the stirring assembly 79 from the tank body 1. This makes it easier to maintain the separation mechanism 7 and the stirring assembly 79, as well as to clean the inside of the tank body 1, and to facilitate the next separation operation.

[0033] like Figures 1-5 As shown, the top of the can lid 6 has multiple circumferentially distributed positioning grooves. The size of the positioning rod 82 is adapted to the size of the positioning groove. Limiting grooves are opened on the front and back of the can body 1. The size of the limiting rod 84 is adapted to the size of the limiting groove. One end of the limiting rod 84 is inclined.

[0034] It should be noted that, in order to facilitate horizontal and vertical fixing of the can lid and increase the stability of the can lid 6 after installation, the sealing gasket 81 is set to increase the sealing performance after installation, and one end of the limiting rod 84 is inclined to facilitate quick installation of the can lid 6.

[0035] like Figures 1-5As shown, a guide plate 75 is fixedly connected to the outside of the fixed pipe 74, a hollow plate 76 is fixedly connected to one end of the fixed pipe 74, a plurality of circumferentially distributed connecting through holes 77 are fixedly connected to the bottom of the hollow plate 76, and discharge holes 78 are fixedly connected to both the left and right sides of the fixed pipe 74. A stirring assembly 79 is provided on the tank cover 6.

[0036] It should be noted that the heating rod 9 is controlled by the temperature controller to heat the mixed solution. At this time, the aromatic molecules rise and enter the hollow plate 76 through multiple connecting holes 77, then enter the interior of the fixed tube 74 and are discharged through the discharge hole 78. At this time, the aromatic molecules come into contact with the condenser plate 73 to form liquid, and are discharged from the discharge pipe 5 through the guide plate 75. After a certain period of time, the heating rod 9 is turned off and the remaining raked oil in the tank 1 is discharged from the discharge pipe 4.

[0037] like Figures 1-5 As shown, sealing rings 710 are fixedly connected to the outer sides of the condenser plate 73, the guide plate 75 and the hollow plate 76, and the outer side of the sealing rings 710 is slidably connected to the inner wall of the tank body 1.

[0038] It should be noted that increasing the sealing when in contact with the inner wall of tank 1 improves the separation efficiency.

[0039] like Figures 1-5 As shown, the stirring assembly 79 includes a motor 791 fixedly mounted to the top of the tank cover 6. The output shaft of the motor 791 is fixedly connected to a rotating shaft 792. A first gear 793 is fixedly connected to the outer side of the rotating shaft 792. A plurality of circumferentially distributed stirring rods 794 are rotatably connected inside the protective shell 71. A second gear 795 is fixedly connected to the top of the outer side of each of the plurality of stirring rods 794. The outer side of the first gear 793 meshes with the outer side of the plurality of second gears 795. The outer side of the plurality of stirring rods 794 is rotatably connected to the interior of the condenser plate 73, the guide plate 75, and the hollow plate 76.

[0040] It should be noted that when the motor 791 is started, the output shaft of the motor 791 drives the rotating shaft 792 to rotate, the rotating shaft 792 drives the first gear 793 to rotate, the first gear 793 drives multiple second gears 795 to rotate, and the multiple second gears 795 drive multiple stirring rods 794 to rotate, thereby mixing and stirring the reforming liquid and extractant inside the tank 1.

[0041] like Figures 1-5 As shown, the feed pipe 3 is located on the lower side of the hollow plate 76, and one end of the discharge pipe 5 is located at the lowest point of the guide plate 75. The discharge pipe 5 is set at an angle.

[0042] It should be noted that the discharge pipe 5 is inclined to facilitate the discharge of aromatic molecules from the inside of the tank 1.

[0043] The working principle of this invention is as follows: When in use, the reforming liquid and extractant are injected into the tank 1 through the feed pipe 3. The motor 791 is started, and its output shaft drives the rotating shaft 792 to rotate. The rotating shaft 792 drives the first gear 793 to rotate, which in turn drives multiple second gears 795 to rotate. These second gears 795 then drive multiple stirring rods 794 to rotate, mixing the reforming liquid and extractant inside the tank 1. After mixing, the heating rod 9 is controlled by a temperature controller to heat the mixed solution. At this time, aromatic molecules rise and enter the hollow plate 76 through multiple connecting holes 77, then enter the fixed pipe 74 and are discharged through the outlet hole 78. Molecules come into contact with the condenser plate 73 to form liquid, which is then discharged from the discharge pipe 5 through the guide plate 75. After a certain period of time, the heating rod 9 is turned off, and the remaining evacuated oil in the tank 1 is discharged from the discharge pipe 4. By setting a limiting mechanism 8, two limiting rods 84 are pulled in opposite directions. The limiting rods 84 drive the connecting plate 85 to compress and contract the spring 86, thereby pulling the limiting rods 84 out of the limiting groove. Then, the tank cover 6 is pulled upward, and the tank cover 6 drives the positioning rod 82 to be pulled out of the positioning groove. This makes it easy to pull the separation mechanism 7 and the stirring assembly 79 out of the tank 1, which facilitates the maintenance of the separation mechanism 7 and the stirring assembly 79, as well as the cleaning of the inside of the tank 1, making it convenient for the next separation operation.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency separation device for aromatics and non-aromatics, comprising a tank (1), characterized in that: The bottom of the tank (1) is fixedly connected to a plurality of circumferentially distributed support legs (2), the front of the tank (1) is fixedly connected to a feed pipe (3), the bottom of the tank (1) is fixedly connected to a discharge pipe (4), the left and right sides of the tank (1) are fixedly connected to discharge pipes (5), the top of the tank (1) is slidably connected to a tank cover (6), the tank cover (6) is provided with a separation mechanism (7), the tank cover (6) is provided with a limit mechanism (8), and the bottom of the inner side of the tank (1) is provided with a heating rod (9). The limiting mechanism (8) includes a sealing gasket (81) fixedly connected to the inner top wall of the can lid (6), and a plurality of rectangularly distributed positioning rods (82) fixedly connected to the inner top wall of the can lid (6). The front and back sides of the can lid (6) are both fixedly connected to a box body (83). The separation mechanism (7) includes a protective shell (71) fixedly connected to the inner top wall of the can lid (6). The bottom of the protective shell (71) is fixedly connected to a plurality of rectangularly distributed connecting rods (72). The bottom of the plurality of connecting rods (72) is fixedly connected to a condensing plate (73). The bottom of the condensing plate (73) is fixedly connected to a fixing pipe (74).

2. The high-efficiency separation device for aromatics and non-aromatics according to claim 1, characterized in that: Both of the housings (83) are slidably connected to limit rods (84) inside, and both limit rods (84) are fixedly connected to connecting plates (85) on the outside. Both limit rods (84) are sleeved with springs (86) on the outside.

3. The high-efficiency separation device for aromatics and non-aromatics according to claim 2, characterized in that: The top of the can lid (6) is provided with a plurality of circumferentially distributed positioning grooves. The size of the positioning rod (82) is adapted to the size of the positioning groove. The front and back of the can body (1) are provided with limiting grooves. The size of the limiting rod (84) is adapted to the size of the limiting groove. One end of the limiting rod (84) is inclined.

4. The high-efficiency separation device for aromatics and non-aromatics according to claim 1, characterized in that: A guide plate (75) is fixedly connected to the outside of the fixed tube (74), a hollow plate (76) is fixedly connected to one end of the fixed tube (74), a plurality of circumferentially distributed connecting through holes (77) are fixedly connected to the bottom of the hollow plate (76), and discharge holes (78) are fixedly connected to both the left and right sides of the fixed tube (74). A stirring assembly (79) is provided on the tank cover (6).

5. The high-efficiency separation device for aromatics and non-aromatics according to claim 4, characterized in that: The outer sides of the condenser plate (73), the guide plate (75) and the hollow plate (76) are all fixedly connected with sealing rings (710), and the outer side of the sealing rings (710) is slidably connected to the inner wall of the tank body (1).

6. The high-efficiency separation device for aromatics and non-aromatics according to claim 4, characterized in that: The stirring assembly (79) includes a motor (791) fixedly mounted to the top of the tank cover (6). The output shaft of the motor (791) is fixedly connected to a rotating shaft (792). A first gear (793) is fixedly connected to the outside of the rotating shaft (792). A plurality of circumferentially distributed stirring rods (794) are rotatably connected inside the protective shell (71). A second gear (795) is fixedly connected to the top of the outside of each of the plurality of stirring rods (794). The outside of the first gear (793) meshes with the outside of the plurality of second gears (795). The outside of the plurality of stirring rods (794) is rotatably connected to the inside of the condenser plate (73), the guide plate (75), and the hollow plate (76).

7. The high-efficiency separation device for aromatics and non-aromatics according to claim 2, characterized in that: The feed pipe (3) is located on the lower side of the hollow plate (76), and one end of the discharge pipe (5) is located at the lowest point of the guide plate (75). The discharge pipe (5) is inclined.

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