Naphtha dechlorination device

Abstract

The utility model discloses a naphtha dechlorination device, which relates to the technical field of dechlorination equipment and comprises a tank body, a mounting shell is mounted at the top end of the tank body, a rotating component is mounted in the mounting shell and comprises a rotating motor mounted in the mounting shell, and the output end of the rotating motor is connected with a first bevel gear. One side of the top end of the first bevel gear is in meshed connection with a second bevel gear, the middle of the second bevel gear is fixedly connected with a first rotating rod, one side of the bottom end of the first bevel gear is in meshed connection with a third bevel gear, the first rotating rod is arranged on the inner wall of the third bevel gear in a sleeving mode and is rotationally connected, and a fixing support is installed on the inner wall of the tank body; according to the utility model, the inner stirring blade and the outer stirring blade respectively rotate in opposite directions by utilizing the rotating assembly to form a complex three-dimensional flow field, and when the inner-layer stirring blade rotates in the forward direction, materials in a central area are driven to quickly circulate, so that a dechlorinating agent is quickly dispersed into a naphtha main body.

Description

Technical Field

[0001] This utility model relates to the field of dechlorination equipment technology, specifically to a naphtha dechlorination device. Background Technology

[0002] Naphtha is a petroleum product, also known as chemical light oil. It is a light oil produced from crude oil or other raw materials and used as a chemical feedstock. During the naphtha production process, due to the decrease in crude oil reserves and the increase in extraction difficulty, some oil recovery additives containing chlorinated hydrocarbons are often added to improve the oil recovery rate. This leads to a significant increase in the content of organochlorine compounds in naphtha. Some organochlorine compounds can form HCl through chemical reactions, which accelerates the corrosion of equipment. Furthermore, organochlorine compounds can easily cause permanent deactivation and poisoning of catalysts. Therefore, dechlorination devices are needed to remove chlorine from naphtha.

[0003] In existing technologies, traditional mixing methods typically employ single-shaft agitation. The mixing range of the agitator blades within the tank is relatively limited, which can easily lead to uneven mixing of naphtha within the tank. The material near the agitator blades mixes better, while areas further away from the agitator blades may experience slow material turnover and insufficient contact between the dechlorinating agent and naphtha. This not only affects the efficiency of the dechlorination reaction and prolongs the dechlorination time but may also result in incomplete removal of chlorine in certain areas, affecting the final dechlorination effect. Furthermore, during operation, the high-speed rotation of the agitator blades during single-shaft agitation can easily generate vortices in the naphtha, preventing some material from fully contacting the dechlorinating agent under the influence of the vortex. It also increases the shear force of the material, which may cause some light components in the naphtha to volatilize, affecting the quality and yield of the naphtha.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this invention is to provide a naphtha dechlorination device to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a naphtha dechlorination device, including a tank body. A mounting shell is installed at the top of the tank body. A rotating assembly is installed inside the mounting shell. The rotating assembly includes a rotary motor installed inside the mounting shell. The output end of the rotary motor is connected to a first bevel gear. A second bevel gear is meshed with one side of the top of the first bevel gear. A first rotating rod is fixedly connected to the middle of the second bevel gear. A third bevel gear is meshed with one side of the bottom of the first bevel gear. A second rotating rod is fixedly connected to the bottom of the third bevel gear. The first rotating rod is rotatably connected to the inner wall of the third bevel gear. A fixed bracket is installed on the inner wall of the tank body. The rotary motor, the first rotating rod, and the second rotating rod are all rotatably connected to the fixed bracket. A first turntable is fixedly connected to the bottom of the first rotating rod. Multiple first stirring blades are installed at the bottom of the first turntable. A second turntable is fixedly connected to the bottom of the second rotating rod. Multiple second stirring blades are installed at the bottom of the second turntable.

[0007] Furthermore, two first pipes are installed on one side of the outer wall of the tank, and a second pipe is connected to the bottom of the tank. Valves are installed at the connection points of the two first pipes and the second pipe with the tank.

[0008] Furthermore, the tank body is equipped with support legs at the bottom, and the bottom of the support legs is equipped with protective pads.

[0009] Furthermore, the outer wall of the rotary motor away from the output end is fixedly connected to the inner wall of the mounting housing, while the top end of the first rotating rod is rotatably connected to the inner wall of the mounting housing.

[0010] Furthermore, the fixed bracket is fixedly connected to the inner wall of the mounting shell, and the first and second stirring blades are made of wear-resistant materials.

[0011] Furthermore, each first stirring blade has two blades, and each second stirring blade has three blades.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The rotating assembly causes the inner and outer stirring blades to rotate in opposite directions, creating a complex three-dimensional flow field. When the inner stirring blades rotate in the forward direction, they drive the material in the central area to circulate rapidly, quickly dispersing the dechlorinating agent into the naphtha. The outer stirring blades rotate in the reverse direction, pushing the material near the tank wall inward, effectively eliminating the stagnation phenomenon at the boundary layer. This ensures that the material in the entire tank is fully stirred from the center to the edge. The bidirectional synergistic effect greatly increases the contact opportunity between the dechlorinating agent and the chlorine in the naphtha, resulting in a more complete reaction. This avoids situations where the local chlorine concentration is too high or too low, improving dechlorination efficiency and quality stability.

[0014] The turbulence and vortices generated by coaxial stirring reduce the diffusion resistance of materials, enhance the mass transfer process, and accelerate the transfer of dechlorinating agent molecules to the area around naphtha-containing chlorinated compounds. This keeps the reactant concentration gradient at a high level, thereby accelerating the reaction rate. The contact between hydrogen and chlorinated organic matter becomes more frequent and complete, and the reactive sites on the catalyst surface are fully utilized. This reduces the time required for the reaction to reach equilibrium, increases the dechlorination rate per unit time, and helps improve the processing capacity of the unit.

[0015] When using single-shaft agitation or high-speed agitation, the shear force on the material is often concentrated in the area near the agitator blades. This can easily lead to excessive shearing and volatilization loss of light components in naphtha, or breakage of large molecules. Coaxial agitation in both directions distributes the shear force relatively evenly throughout the tank. The shear force generated by the inner agitator blades mainly acts on the central area, promoting the refinement and dispersion of the dechlorinating agent. The counter-rotation of the outer agitator blades moderately shears the material near the tank wall, preventing material adhesion and accumulation while avoiding excessive damage to the light components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a naphtha dechlorination device;

[0017] Figure 2 This is a schematic diagram of the internal structure of a naphtha dechlorination device.

[0018] Figure 3 This is a schematic diagram of the structure of a rotating component in a naphtha dechlorination device;

[0019] Figure 4 This is a schematic diagram of the meshing of a bevel gear set in a naphtha dechlorination device.

[0020] Figure 5 This is a schematic diagram showing the disassembled rotating component in a naphtha dechlorination device.

[0021] In the diagram: 1. Tank body; 2. Mounting shell; 3. Rotary motor; 4. First bevel gear; 5. Second bevel gear; 6. First rotating rod; 7. Third bevel gear; 8. Second rotating rod; 9. Fixed bracket; 10. First turntable; 11. First stirring blade; 12. Second turntable; 13. Second stirring blade; 14. First pipe; 15. Second pipe; 16. Support leg. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model provides a technical solution: a naphtha dechlorination device, including a tank 1, which is the main container for the naphtha dechlorination reaction. The tank 1 is cylindrical and hollow inside to hold naphtha and a dechlorinating agent. A housing 2 is installed at the top of the tank 1 to protect the internal components from external interference, such as dust or moisture. A rotating assembly is installed inside the housing 2, including a rotating motor 3 installed inside the housing 2. The output end of the rotating motor 3 is connected to a first bevel gear 4. After the rotating motor 3 is started, it drives the first... The bevel gear 4 begins to rotate. A second bevel gear 5 is meshed on one side of the top of the first bevel gear 4. A first rotating rod 6 is fixedly connected to the middle of the second bevel gear 5. A third bevel gear 7 is meshed on one side of the bottom of the first bevel gear 4. A second rotating rod 8 is fixedly connected to the bottom of the third bevel gear 7. The first bevel gear 4 transmits the rotational motion of the rotary motor 3 to the second bevel gear 5 and the third bevel gear 7. The second bevel gear 5 transmits power to the first rotating rod 6 through tooth surface contact, and the third bevel gear 7 transmits power to the second rotating rod 8 through tooth surface contact, thus achieving power distribution. The second bevel gear 5 and the third bevel gear 7 are located on the upper and lower sides of the first bevel gear 4, respectively, and their meshing angles are opposite. This results in them rotating in completely opposite directions when receiving power transmitted from the first bevel gear 4. The first rotating rod 6 is rotatably connected to the inner wall of the third bevel gear 7. A fixed bracket 9 is installed on the inner wall of the tank body 1. The rotary motor 3, the first rotating rod 6, and the second rotating rod 8 are all rotatably connected to the fixed bracket 9. The fixed bracket 9 provides support and fixation for the rotary motor 3, the first rotating rod 6, and the second rotating rod 8. Through the rigid support of the fixed bracket 9, the mechanical vibration or To mitigate energy loss due to deformation and ensure component operational stability, the bottom end of the first rotating rod 6 is fixedly connected to the first turntable 10, and multiple first stirring blades 11 are installed at the bottom end of the first turntable 10. The first rotating rod 6 transmits the rotational power of the second bevel gear 5 to the first turntable 10, driving the first stirring blades 11 to rotate. The bottom end of the second rotating rod 8 is fixedly connected to the second turntable 12, and multiple second stirring blades 13 are installed at the bottom end of the second turntable 12. The second rotating rod 8 transmits the rotational power of the third bevel gear 7 to the second turntable 12, and the second turntable 12 drives the second stirring blades 13 to rotate.

[0024] See Figure 1Two first pipes 14 are installed on one side of the outer wall of the tank body 1. Naphtha and dechlorinating agent are injected tangentially into the tank body 1 through the two first pipes 14 respectively. When injected tangentially, a rotating flow field is formed to promote initial mixing. A second pipe 15 is connected to the bottom of the tank body 1. Valves are installed at the connection points of the two first pipes 14 and the second pipe 15 with the tank body 1. The naphtha after reaction is discharged through the second pipe 15.

[0025] See Figure 1 The bottom of the tank body 1 is equipped with a support leg 16, and the bottom of the support leg 16 is equipped with a protective pad. The support leg 16 forms an equilateral triangle to ensure that the tank body 1 is subjected to balanced force and prevents the tank body 1 from tilting or settling through rigid support.

[0026] Working principle: The rotary motor 3 transmits power to the meshing second and third bevel gears 5 and 7 via the first bevel gear 4, driving the first rotating rod 6 and the second rotating rod 8 to rotate in opposite directions. The first rotating rod 6 drives the first rotating disk 10 and the first stirring blade 11 to rotate clockwise, while the second rotating rod 8 drives the second rotating disk 12 and the second stirring blade 13 to rotate counterclockwise, creating a convective shearing effect and enhancing the mixing efficiency of naphtha and dechlorinator. The fixed bracket 9 rigidly supports the rotating rods and motor, reducing vibration loss and ensuring operational stability. Two first pipes 14 are symmetrically installed on the upper side wall of the tank 1. Naphtha and dechlorinator are injected tangentially to form a rotating flow field, which, combined with the bidirectional shearing action of the first stirring blade 11 and the second stirring blade 13, improves the mixing efficiency.

[0027] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail here.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A naphtha dechlorination device, comprising a tank (1), characterized in that: The top of the tank (1) is fitted with a mounting shell (2). A rotating assembly is installed inside the mounting shell (2). The rotating assembly includes a rotating motor (3) installed inside the mounting shell (2). The output end of the rotating motor (3) is connected to a first bevel gear (4). A second bevel gear (5) is meshed with one side of the top of the first bevel gear (4). A first rotating rod (6) is fixedly connected to the middle of the second bevel gear (5). A third bevel gear (7) is meshed with one side of the bottom of the first bevel gear (4). A second rotating rod (6) is fixedly connected to the bottom of the third bevel gear (7). 8) The first rotating rod (6) is rotatably connected to the inner wall of the third bevel gear (7). The inner wall of the tank (1) is equipped with a fixed bracket (9). The rotary motor (3), the first rotating rod (6), and the second rotating rod (8) are all rotatably connected to the fixed bracket (9). The bottom end of the first rotating rod (6) is fixedly connected to the first turntable (10). The bottom end of the first turntable (10) is equipped with multiple first stirring blades (11). The bottom end of the second rotating rod (8) is fixedly connected to the second turntable (12). The bottom end of the second turntable (12) is equipped with multiple second stirring blades (13).

2. The naphtha dechlorination device as described in claim 1, characterized in that: Two first pipes (14) are installed on one side of the outer wall of the tank (1), and a second pipe (15) is connected to the bottom of the tank (1). Valves are provided at the connection points of the two first pipes (14) and the second pipe (15) with the tank (1).

3. The naphtha dechlorination device as described in claim 2, characterized in that: The bottom of the tank (1) is equipped with a support leg (16), and the bottom of the support leg (16) is equipped with a protective pad.

4. The naphtha dechlorination device as described in claim 3, characterized in that: The outer wall of the rotary motor (3) away from the output end is fixedly connected to the inner wall of the mounting housing (2), and the top end of the first rotating rod (6) is rotatably connected to the inner wall of the mounting housing (2).

5. The naphtha dechlorination device as described in claim 4, characterized in that: Each of the first stirring blades (11) has two blades, and each of the second stirring blades (13) has three blades.

6. The naphtha dechlorination device as described in claim 5, characterized in that: The fixed bracket (9) is fixedly connected to the inner wall of the mounting shell (2), and the first stirring blade (11) and the second stirring blade (13) are made of wear-resistant material.

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