Microbial urea dewaxing stirring reaction device

Abstract

The invention belongs to the technical field of petroleum processing, and particularly relates to a microbial urea dewaxing stirring reaction device which comprises a reactor shell, a motor base is fixedly connected to the upper end of the reactor shell, a transmission shell is fixedly mounted at the upper end of the motor base, a stirring motor and a dispersing motor are fixedly mounted at the upper end of the transmission shell, and a stirring motor is fixedly mounted at the lower end of the stirring motor. The upper end of the reactor shell is rotationally connected with a stirring shaft through a bearing, and the lower end of the stirring shaft extends into the reactor shell and is fixedly connected with a frame type stirrer through a plurality of connecting rods. Efficient crushing and stirring operation can be realized, and the problems that urea in mixed materials is easy to crystallize, reaction materials are easy to adhere to parts in a stirrer and the inner wall of equipment, an outlet is blocked, and the stirring efficiency is low are effectively solved. The dewaxing effect is poor; the material reaction is incomplete; the whole process flow cannot be opened due to the fact that the material does not have flowability; and the production is actually restricted.

Description

Technical Field

[0001] The invention belongs to the technical field of petroleum processing, and in particular relates to a microbial urea dewaxing stirring reaction device. Background Art

[0002] Microbial urea dewaxing is suitable for the dewaxing of kerosene, light diesel, heavy diesel, lubricating oil fractions and even residual lubricating oil due to the presence of microorganisms. It is a broad-spectrum dewaxing technology. Compared with traditional urea dewaxing (whether dry or wet), microbial urea dewaxing has no solvent. Urine directly reacts with wax oil to form a mixed product of complex and dewaxed oil (without wax).

[0003] Urea is easy to form crystalline particles when it is cooled. The dewaxing reaction is an exothermic reaction, and the completion of the complex reaction is a reaction that can only occur at low temperature. Urine must be at high temperature (above 80°) to be fluid. Therefore, when high-temperature fluid urine is added to low-temperature crude oil, it is easy to crystallize when cooled. The formed complex is solid phase, resulting in urea crystals in the mixed product (making part of the urea unable to participate in the reaction, causing waste or having to add more urea). Crystallized urea and complexes form small particles, large particles, and even spheres and lumps. Therefore, it is necessary to strengthen stirring and crushing to continue the reaction, improve the reaction efficiency, let the raw materials participate in the reaction as much as possible, and improve the fluidity of the product. Crystallized urea also needs to be stirred and crushed. The above phenomena or problems are problems caused by the process and need equipment to overcome.

[0004] Therefore, we propose a microbial urea dewaxing stirring reaction device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a microbial urea dewaxing stirring reaction device in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a microbial urea dewaxing stirring reaction device, comprising a reactor shell, the upper end of the reactor shell is fixedly connected to a motor seat, the upper end of the motor seat is fixedly provided with a transmission shell, the upper end of the transmission shell is respectively fixedly provided with a stirring motor and a dispersion motor, the upper end of the reactor shell is rotatably connected to a stirring shaft through a bearing, the lower end of the stirring shaft extends into the reactor shell, and is fixedly connected to a frame-type agitator through a plurality of connecting rods, the middle part of the frame-type agitator is fixedly connected to a plurality of groups of stirring blades, the lower end output end of the stirring motor extends into the transmission shell, and is transmission-connected to the upper end shaft wall of the stirring shaft through a sprocket assembly, the lower end output end of the dispersion motor extends into the transmission shell, and is fixedly connected to a transmission shaft, the transmission shaft is rotatably sleeved in the stirring shaft, the lower end of the transmission shaft is fixedly connected to a support pipe fitting, and a plurality of dispersion and crushing blades are fixedly connected to the outside of the support pipe fitting; At the lower end of the reactor shell corresponding to the discharge port, an upwardly expanding discharge mechanism is fixedly installed. At the upper end of the reactor shell, a process pipe opening is fixedly installed. On the outer wall of the lower end of the reactor shell, an instrument pipe opening is fixedly installed.

[0007] In the above-mentioned microbial urea dewaxing stirring reaction device, the reactor shell is specifically a vertical cylindrical container, with an elliptical head at the upper part and a conical head at the lower part.

[0008] In the above-mentioned microbial urea dewaxing stirring reaction device, an ear-type support is arranged at the bottom of the reactor shell to support the whole on the frame foundation.

[0009] In the above-mentioned microbial urea dewaxing stirring reaction device, there is a fixed gap between the outer wall of the frame-type stirrer and the inner wall of the reactor shell, and the lower cross-section of the frame-type stirrer is set as a triangular structure.

[0010] In the above-mentioned microbial urea dewaxing stirring reaction device, the upwardly expanding discharge mechanism is specifically an upwardly expanding electric discharge valve.

[0011] In the above-mentioned microbial urea dewaxing stirring reaction device, both the stirring motor and the dispersing motor are motor structures designed for forward and reverse rotation.

[0012] In the above-mentioned microbial urea dewaxing stirring reaction device, the inner wall of the reactor shell is set to have high smoothness and high roundness.

[0013] In the above-mentioned microbial urea dewaxing stirring reaction device, the frame-type stirrer is provided with four side walls, and multiple groups of stirring blades are symmetrically and fixedly connected to the four side walls of the frame-type stirrer.

[0014] Compared with the prior art, the present invention provides a microbial urea dewaxing stirring reaction device, which has the following beneficial effects: 1. For the microbial urea dewaxing stirring reaction device, through the provided reactor shell, the lower end of the reactor shell is integrally supported on the frame foundation through the ear-type support, and the inner wall of the reactor shell is set to have high smoothness and high roundness, which can reduce the adhesion of urea and other crystalline substances on the wall. The stirring motor drives the stirring shaft to drive the frame-type stirrer to act through the sprocket assembly for rapid stirring operation, and multiple groups of stirring blades are installed in the frame-type stirrer. By increasing the axial flow force of the material through the stirring blades, the dispersing motor drives multiple dispersing and crushing blades to act through the transmission shaft and the support pipe fittings, further improving the stirring and crushing efficiency. Moreover, the support of the dispersing and crushing blades is designed as a circular hollow structure, which can reduce the accumulation of materials and avoid the urine hitting the scraping wall stirrer and the dispersing disk when the urine is added, preventing splashing due to collision with the urine.

[0015] 2. The microbial urea dewaxing stirring reaction device has a fixed gap between the outer wall of the frame stirrer and the reactor shell, and the lower cross-section of the frame stirrer is triangular. By adopting the fixed-gap scraping wall design method, the design difficulty and failure rate of the scraping wall facility can be reduced, and sticky materials can be prevented from adhering to the scraping wall facility.

[0016] 3. The microbial urea dewaxing stirring reaction device is equipped with an upward-expanding discharging mechanism, specifically an upward-expanding electric discharging valve, which effectively improves the discharging fluency.

[0017] In summary, the present invention can achieve efficient crushing and stirring operations, effectively solve the problems that urea in the mixed materials is prone to crystallization, the reaction materials are prone to adhere to the internal components of the stirrer, the inner wall of the equipment, and block the outlet, resulting in the situation that urea cannot fully participate in the reaction, the dewaxing effect is poor, the material reaction is incomplete, and the material has no fluidity, which restricts the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a microbial urea dewaxing stirring reaction device proposed by the present invention; Figure 2 It is a schematic structural diagram of the frame stirrer of a microbial urea dewaxing stirring reaction device proposed by the present invention.

[0019] In the figure: 1. Reactor shell; 2. Motor base; 3. Transmission shell; 4. Stirring motor; 5. Dispersing motor; 6. Stirring shaft; 7. Connecting rod; 8. Frame stirrer; 9. Stirring blades; 10. Sprocket assembly; 11. Transmission shaft; 12. Support pipe fitting; 13. Dispersing and crushing blades; 14. Upward-expanding discharging mechanism; 15. Process pipe orifice; 16. Instrument pipe orifice; 17. Ear support. DETAILED DESCRIPTION OF THE INVENTION

[0020] The following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0021] Please refer to Figure 1-2, A microbial urea dewaxing stirring reaction device, comprising a reactor housing 1. At the upper end of the reactor housing 1, a motor base 2 is fixedly connected. At the upper end of the motor base 2, a transmission housing 3 is fixedly installed. At the upper end of the transmission housing 3, a stirring motor 4 and a dispersion motor 5 are respectively fixedly installed. At the upper end of the reactor housing 1, a stirring shaft 6 is rotatably connected through a bearing. The stirring shaft 6 is of a hollow structure. The lower end of the stirring shaft 6 extends into the reactor housing 1 and is fixedly connected with a frame stirrer 8 through multiple connecting rods 7. In the middle of the frame stirrer 8, multiple groups of stirring blades 9 are fixedly connected. The lower output end of the stirring motor 4 extends into the transmission housing 3 and is in transmission connection with the upper shaft wall of the stirring shaft 6 through a sprocket assembly 10. The lower output end of the dispersion motor 5 extends into the transmission housing 3 and is fixedly connected with a transmission shaft 11. The transmission shaft 11 is rotatably sleeved in the stirring shaft 6. At the lower end of the transmission shaft 11, a support pipe fitting 12 is fixedly connected. Outside the support pipe fitting 12, multiple dispersion and crushing blades 13 are fixedly connected; At the corresponding discharge port at the lower end of the reactor housing 1, an upward-opening discharge mechanism 14 is fixedly installed. At the upper end of the reactor housing 1, a process pipe orifice 15 is fixedly installed. On the outer wall at the lower end of the reactor housing 1, an instrument pipe orifice 16 is fixedly installed.

[0022] The reactor housing 1 is specifically a vertical cylindrical container, with an elliptical head at the upper part and a conical head at the lower part.

[0023] At the bottom of the reactor housing 1, ear-type supports 17 are provided to support the whole on a frame foundation.

[0024] There is a fixed gap between the outer wall of the frame stirrer 8 and the inside of the reactor housing 1, and the lower cross-section of the frame stirrer 8 is set as a triangular structure.

[0025] The upward-opening discharge mechanism 14 is specifically an upward-opening electric discharge valve.

[0026] Both the stirring motor 4 and the dispersion motor 5 are motor structures designed for forward and reverse rotation.

[0027] The inner wall of the reactor housing 1 is set to have a high surface finish and high roundness.

[0028] The frame stirrer 8 is provided with four side walls, and multiple groups of stirring blades 9 are symmetrically fixedly connected to the four side walls of the frame stirrer 8.

[0029] The operating principle of the present invention is described as follows: Water with a urea mass fraction of 17% is used as a solvent, and the temperature is gradually increased to dissolve urea until it is dissolved into a homogeneous solution state. A distillate oil is selected as the feedstock oil, and the distillate oil and the urea solution are mixed in the device of the present invention according to a fixed ratio and addition method. Stirring is enabled during this process to cool down the temperature. When the temperature of the mixed solution drops to 65 °C, a solid additive is added for a complexation reaction, and high-speed stirring is enabled for linear cutting. When the temperature of the mixed solution drops to 50 °C, the high-speed stirring is stopped, and the stirring reaction continues to cool down. When the temperature drops to 30 °C, the reactants are removed from the device and transferred to a next fixed container for static reaction. After the feedstock oil, bacteria, and urine enter the reactor shell, they are fully stirred, broken, and mixed, and then flow out of the device after sufficient contact reaction; Through the provided reactor shell 1, the lower end of the reactor shell 1 is integrally supported on the frame foundation through the lug supports 17. The inner wall of the reactor shell 1 is set to have a high surface finish and high roundness, which can reduce the adhesion of crystalline substances such as urea to the wall. The stirring motor 4 drives the stirring shaft 6 through the sprocket assembly 10 to drive the frame stirrer 8 to act for rapid stirring operation. Multiple stirring blades 9 are installed in the frame stirrer 8, and the axial flow force of the material is increased by the orientation of the stirring blades. The dispersion motor 5 drives multiple dispersion and crushing blades 13 through the transmission shaft 11 and the support pipe fitting 12 to further improve the stirring and crushing efficiency. The support of the dispersion and crushing blades is designed as a circular ring hollow structure, which can reduce the accumulation of materials and avoid the urine hitting the scraping wall stirrer and the dispersion disc when urine is added, preventing splashing caused by collision with urine. There is a fixed gap between the outer wall of the frame stirrer 8 and the inside of the reactor shell 1, and the lower cross-section of the frame stirrer 8 is set as a triangular structure, adopting a fixed gap scraping wall design method, which can reduce the design difficulty and failure rate of the scraping wall facility and avoid the adhesion of viscous materials to the scraping wall facility. Through the provided upward-expanding discharging mechanism 14, the upward-expanding discharging mechanism 14 is specifically an upward-expanding electric discharging valve, which effectively improves the smoothness of discharging.

[0030] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A microbial urea dewaxing stirring reaction device, comprising a reactor housing (1), characterized in that: The upper end of the reactor shell (1) is fixedly connected with a motor base (2). The upper end of the motor base (2) is fixedly provided with a transmission housing (3). The upper end of the transmission housing (3) is respectively fixedly provided with a stirring motor (4) and a dispersion motor (5). The upper end of the reactor shell (1) is rotatably connected with a stirring shaft (6) through a bearing. The lower end of the stirring shaft (6) extends into the reactor shell (1), and is fixedly connected with a frame stirrer (8) through a plurality of connecting rods (7). The middle part of the frame stirrer (8) is fixedly connected with a plurality of stirring blades (9). The lower output end of the stirring motor (4) extends into the transmission housing (3), and is in transmission connection with the upper end shaft wall of the stirring shaft (6) through a sprocket assembly (10). The lower output end of the dispersion motor (5) extends into the transmission housing (3), and is fixedly connected with a transmission shaft (11). The transmission shaft (11) is rotatably sleeved in the stirring shaft (6). The lower end of the transmission shaft (11) is fixedly connected with a support pipe fitting (12). A plurality of dispersion and crushing blades (13) are fixedly connected to the outside of the support pipe fitting (12); At the corresponding discharge port at the lower end of the reactor shell (1), an upward-opening discharge mechanism (14) is fixedly provided. At the upper end of the reactor shell (1), a process pipe opening (15) is fixedly provided. On the outer wall of the lower end of the reactor shell (1), an instrument pipe opening (16) is fixedly provided.

2. The microbial urea dewaxing stirring reaction device according to claim 1, characterized in that: The reactor shell (1) is specifically a vertical cylindrical container, with an elliptical head at the upper part and a conical head at the lower part.

3. A microbial urea dewaxing stirring reaction device according to claim 1, characterized in that: At the bottom of the reactor shell (1), lug supports (17) are provided to support the whole on a frame foundation.

4. A microbial urea dewaxing stirring reaction device according to claim 1, characterized in that: There is a fixed gap between the outer wall of the frame stirrer (8) and the inside of the reactor shell (1), and the lower cross-section of the frame stirrer (8) is set as a triangular structure.

5. A microbial urea dewaxing stirring reaction device according to claim 1, characterized in that: The upward-opening discharge mechanism (14) is specifically an upward-opening electric discharge valve.

6. The microbial urea dewaxing stirring reaction device according to claim 1, characterized in that: Both the stirring motor (4) and the dispersion motor (5) are motor structures with forward and reverse rotation designs.

7. A microbial urea dewaxing stirring reaction device according to claim 1, characterized in that: The inner wall of the reactor shell (1) is set to have a high surface finish and a high roundness.

8. A microbial urea dewaxing stirring reaction device according to claim 1, characterized in that: The frame stirrer (8) is provided with four side walls, and a plurality of groups of stirring blades (9) are symmetrically fixedly connected to the four side walls of the frame stirrer (8).

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