A horizontal single-shaft self-cleaning stirring device for treating high-viscosity rectification residues

Abstract

The utility model discloses a kind of processing high viscosity rectification residue's horizontal single-shaft self-cleaning stirring equipment, it is related to the field of material stirring, it includes cylinder, the shaft part of cylinder is provided with stirring shaft, and the outer periphery of stirring shaft is provided with three first disc pieces in array, and second disc piece, two rows of scrapers are relatively fixed and arranged in the inner wall of cylinder;First disc piece is provided with first T-shaped hook claw on the side close to the inner wall of cylinder, second disc piece is provided with second T-shaped hook claw on the side close to the inner wall of cylinder, and scraper and first T-shaped hook claw and second T-shaped hook claw are mutually inserted and engaged, the mixing of the middle layer material in cylinder and the cleaning of the inner wall of cylinder are realized in the present application, by the insertion and engagement of hook claw and scraper, material can be gradually transported forward and accompanied by transverse mixing, provide good condition for evaporation operation, help to recover useful component in residue.Simultaneously T-shaped hook claw and scraper are mutually inserted, and the self-cleaning area of lifting device is improved.

Description

Technical Field

[0001] This utility model relates to the field of material mixing technology, and more specifically, to a horizontal single-shaft self-cleaning mixing device for processing high-viscosity distillation residues. Background Technology

[0002] Distillation, as a primary separation method in chemical production, is widely used and crucial. It has greatly promoted the development of the chemical industry, enabling the effective separation and purification of various chemical raw materials, providing high-quality raw materials for numerous downstream industries. With the continuous development of the chemical industry, the scale of production is constantly expanding, and the variety of products is increasing, leading to increasingly higher requirements for distillation efficiency and quality. A distillation unit consists of a distillation column, a condenser, and a reboiler. The reboiler provides the energy required for vaporization in the distillation process and plays an indispensable role throughout the entire process. The treatment of distillation residue has become a key factor affecting the entire production process. Proper treatment of distillation residue not only helps improve the efficiency of the distillation process and reduce production costs, but also reduces adverse environmental impacts, achieving sustainable development in chemical production. Furthermore, with increasingly stringent environmental protection requirements, higher standards have been set for the treatment of distillation residue, further highlighting its importance.

[0003] There is a wealth of experience in handling distillation residues. For distillation residues, especially those with medium to high viscosity, common reboilers such as kettle reboilers, thermosiphon reboilers, forced circulation reboilers, and falling film reboilers each have their applications. Kettle reboilers are simple in structure and easy to operate, suitable for applications with less stringent distillation requirements; thermosiphon reboilers utilize the thermosiphon principle of liquid circulation, resulting in relatively high heat transfer efficiency; forced circulation reboilers use external force to force liquid circulation, adapting to some special operating conditions; and falling film reboilers are suitable for the distillation of heat-sensitive materials. However, reboilers that vaporize inside or outside the heat exchange tubes are only suitable for low-viscosity environments, because at high viscosity, the liquid's fluidity deteriorates, affecting heat and mass transfer efficiency. While kettle reboilers using vaporization on the inner wall with stirring can be used in medium-viscosity environments, they suffer from a small evaporation area, leading to low evaporation efficiency. In addition, frame-type, anchor-type, or ribbon-type stirring distillation kettles, which are commonly found in the market, are widely used due to their simple structure and low investment. They can stir the materials to a certain extent, promoting heat and mass transfer. Thin-film evaporators with scrapers are also used in the treatment of distillation residues. They use the action of scrapers to form a thin film of material, increasing the evaporation area. Horizontal twin-shaft self-cleaning stirring equipment is suitable for ultra-high viscosity systems due to its large heat transfer coefficient, high efficiency, and strong processing capacity.

[0004] However, these existing treatment methods have significant shortcomings. Common reboilers are poorly suited for handling medium- to high-viscosity distillation residues and cannot meet the demands for efficient processing. Distillation kettles with frame, anchor, or ribbon agitators have low heat transfer coefficients, low evaporation efficiency, and low solvent recovery rates, and their processing capacity drops sharply as viscosity increases. Thin-film evaporators with scrapers have short residence times and cannot handle materials with high viscosity. While horizontal twin-shaft self-cleaning agitators offer excellent performance, their complex structure, high investment costs, and limited application restrict their effectiveness.

[0005] In summary, how to achieve efficient treatment of high-viscosity distillation residues is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a horizontal single-shaft self-cleaning stirring device for processing high-viscosity distillation residues, which effectively achieves efficient processing of high-viscosity distillation residues.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A horizontal single-shaft self-cleaning stirring device for processing high-viscosity distillation residue includes a cylinder, a stirring shaft is provided on the shaft of the cylinder, three rows of first discs and second discs are arranged in an array on the outer periphery of the stirring shaft, and two rows of scrapers are fixedly arranged on the inner wall of the cylinder.

[0009] The first disc is provided with a first T-shaped hook on the side near the inner wall of the cylinder to mix the material in the middle layer of the cylinder, and the second disc is provided with a second T-shaped hook on the side near the inner wall of the cylinder to clean the inner wall of the cylinder. The scraper interlocks and meshes with the first T-shaped hook and the second T-shaped hook.

[0010] Preferably, the three rows of the first disk and the first T-shaped hook are arranged in a spiral shape.

[0011] Preferably, the three rows of the second disks and the second T-shaped claws are arranged in a spiral pattern.

[0012] Preferably, the stirring shaft has a hollow structure, and the internal cavity of the stirring shaft is used to introduce a heat transfer medium.

[0013] Preferably, the second disc and / or the first disc are hollow structures, and the cavities inside the second disc and / or the first disc are connected to the cavities inside the stirring shaft.

[0014] Preferably, the outer wall of the cylinder is spirally fitted with a heat exchange jacket for exchanging heat with the interior of the cylinder.

[0015] Preferably, the scraper includes a first part and a second part connected to each other, the first part being configured to cooperate with the second T-shaped hook, and the second part being configured to cooperate with the first T-shaped hook.

[0016] Preferably, the first part is a vertical plate-shaped structure, one end of which is fixedly connected to the inner wall of the cylinder, and the second part is a C-shaped scraper structure, one end of which is fixedly connected to the end of the first part away from the cylinder.

[0017] Preferably, the three rows of the first discs are spaced apart along the circumferential direction of the stirring shaft, and the interval between two adjacent rows of the first discs forms a material flow channel.

[0018] Preferably, both the first T-shaped hook and the second T-shaped hook are solid structures.

[0019] This invention provides a horizontal single-shaft self-cleaning stirring device for processing high-viscosity distillation residues. It achieves mixing of the material in the middle layer of the cylinder and cleaning of the inner wall. Utilizing the interlocking of hooks and scrapers, the material is gradually conveyed forward while being laterally mixed, providing favorable conditions for subsequent evaporation operations and facilitating the recovery of useful components from the residues. Simultaneously, the three rows of discs and hooks allow for a larger channel for material flow, making it more suitable for ultra-high viscosity systems. Furthermore, the interlocking T-shaped hooks and scrapers not only clean the inner wall of the cylinder and the outer wall of the stirring shaft but also the sides of the discs, further increasing the self-cleaning area of ​​the device.

[0020] The further solutions provided in this application can also achieve at least one of the following beneficial technical effects:

[0021] By arranging the three rows of discs and T-shaped hooks in a spiral pattern, the simultaneous force on the same row of hooks can be avoided, the force on the stirring shaft can be prevented from being concentrated, the force situation can be improved, and it is more suitable for ultra-high viscosity systems.

[0022] By making the second disc and / or the first disc hollow and connecting its internal cavity with the internal cavity of the hollow stirring shaft, the heat transfer area of ​​the equipment is greatly increased. Hot and cold media can cool or heat the inside of the material through these cavities, making reaction temperature control easier and making the mass transfer and heat transfer of the whole equipment more efficient.

[0023] By using a heat exchange jacket, the entire cylinder can be cooled or heated, making the mass and heat transfer of the entire equipment more efficient. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the self-cleaning stirring device in this embodiment;

[0026] Figure 2 This is a schematic diagram of the internal structure of the cylinder in this embodiment;

[0027] Figure 3 This is a schematic diagram illustrating the interaction between the hook and the scraper in this embodiment.

[0028] Figures 1-3 In the accompanying drawings, the reference numerals include:

[0029] 1. Cylinder body; 2. Stirring shaft; 3. First disc; 4. First T-shaped hook; 5. Scraper; 51. First part; 52. Second part; 6. Second disc; 7. Second T-shaped hook; 8. Heat exchange jacket. Detailed Implementation

[0030] 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.

[0031] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar words used in this utility model do not indicate any order, quantity, or importance. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. This application discloses a horizontal single-shaft self-cleaning stirring device for processing high-viscosity distillation residues.

[0032] The core of this invention is to provide a horizontal single-shaft self-cleaning stirring device for processing high-viscosity distillation residues.

[0033] Please refer to Figures 1 to 2 .

[0034] The horizontal single-shaft self-cleaning stirring device for processing high-viscosity distillation residue provided by this utility model includes a cylinder 1. A stirring shaft 2 is provided on the shaft of the cylinder 1. Three rows of first discs 3 and second discs 6 are arranged in an array on the outer periphery of the stirring shaft 2. Two rows of scrapers 5 are fixedly arranged on the inner wall of the cylinder 1. A first T-shaped hook 4 is provided on the side of the first disc 3 near the inner wall of the cylinder 1 to mix the material in the middle layer of the cylinder 1. A second T-shaped hook 7 is provided on the side of the second disc near the inner wall of the cylinder 1 to clean the inner wall of the cylinder 1. The scrapers 5 interlock and mesh with the first T-shaped hook 4 and the second T-shaped hook 7 to achieve efficient stirring and self-cleaning effects. Due to the interaction between the T-shaped hooks and the scrapers, the material can be fully stirred and mixed, and various parts of the stirring device can be cleaned at the same time to avoid material adhesion, thereby improving heat transfer efficiency and stirring effect.

[0035] Specifically, the stirring shaft 2 is located at the shaft of the cylinder 1 and connected to the output end of the rotating motor on the cylinder 1, allowing the stirring shaft 2 to rotate around the shaft of the cylinder 1 inside the cylinder 1. Three rows of first discs 3 and second discs 6 are arranged in an array along the outer periphery of the stirring shaft 2, with the first discs 3 and second discs 6 in the same row spaced apart. First T-shaped hooks 4 and second T-shaped hooks 7 are respectively provided on the side of the first discs 3 and second discs 6 closest to the inner wall of the cylinder 1. The first T-shaped hooks 4 and second T-shaped hooks 7 are interleaved with the scraper 5 located on the inner wall of the cylinder 1, effectively conveying the material forward gradually while also mixing it laterally. During operation, the second T-shaped hooks 7 scrape and clean the inner wall of the cylinder 1, while the first T-shaped hooks 4 stir and mix the material in the middle layer inside the cylinder 1, preventing material adhesion and thus improving heat transfer efficiency and stirring effect.

[0036] It should be noted that the hooks in this application all adopt a T-shaped structure. Compared with the E-shaped hooks in the prior art, the T-shaped hooks are more suitable for ultra-high viscosity systems. The stirring forces in ultra-high viscosity systems are more complex. The material initially appears as a low-viscosity, highly fluid liquid, gradually developing into a highly viscous substance during polymerization or drying. Throughout this process, the forces on the hooks on the stirring shaft and discs gradually increase. In horizontal single-shaft mixing equipment, the E-shaped hooks need to be cleaned into the E-shaped hook grooves on another stirring shaft, so the entire hook cross-section cannot be made very strong. In contrast, the T-shaped hooks can be designed as a single unit, with no removed sections, and all cross-sectional areas are the same. For the same size model, the flexural section modulus of the T-shaped hooks can be designed to be larger.

[0037] The aforementioned horizontal single-shaft self-cleaning agitator for treating high-viscosity distillation residues achieves mixing of the intermediate layer material within cylinder 1 and cleaning of the inner wall of the cylinder. Utilizing the interlocking engagement of hooks and scrapers, the material is gradually conveyed forward with lateral mixing, providing favorable conditions for subsequent evaporation operations and facilitating the recovery of useful components from the residue. Simultaneously, the arrangement of three rows of discs and hooks allows for ample material flow, making it more suitable for ultra-high viscosity systems. Furthermore, the interlocking T-shaped hooks and scrapers not only clean the inner wall of cylinder 1 and the outer wall of the agitator shaft 2 but also clean the sides of the discs, further increasing the self-cleaning area of ​​the device.

[0038] The horizontal single-shaft self-cleaning stirring device for processing high-viscosity distillation residues provided by this utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0039] In one specific implementation, reference is made to... Figure 2 The three rows of first discs 3 and first T-shaped claws 4 are arranged in a spiral. The three rows of second discs 6 and second T-shaped claws 7 are arranged in a spiral.

[0040] Specifically, the first T-shaped hook 4 and the second T-shaped hook 7 are each arranged in three spiral rows. This spiral arrangement ensures that the first T-shaped hook 4 and the second T-shaped hook 7 are not simultaneously in the same stirring position during the material stirring process, thus avoiding simultaneous force on the same row of hooks. For highly viscous materials, the viscosity will quickly reach its peak at a certain moment during stirring, at which point the stress situation of the stirring system is most severe. The spiral arrangement can avoid the concentration of force on the stirring shaft, improving the stress situation, thus making the device more suitable for stirring ultra-high viscosity materials.

[0041] Based on any of the above embodiments, refer to Figure 3 The stirring shaft 2 is a hollow structure, and the internal cavity of the stirring shaft 2 is used to introduce the heat transfer medium.

[0042] Specifically, the stirring shaft 2 is located at the axial part of the cylinder 1 and has a hollow structure, with a heat transfer medium flowing through its internal cavity. During operation, the heat transfer medium flows through the internal cavity of the stirring shaft 2, directly cooling or heating the material inside the cylinder 1. This significantly increases the heat transfer area of ​​the equipment, making the reaction temperature easier to control, and thus making the mass and heat transfer of the entire equipment more efficient.

[0043] The stirring shaft 2 can be made of stainless steel, which has good strength and corrosion resistance, and can be machined into shape on a lathe. An internal cavity runs through the shaft for introducing a heat transfer medium, such as hot water or hot oil. Seals can be installed at both ends of the shaft to prevent leakage of the heat transfer medium, or it can be connected to a drive motor via a coupling to rotate the shaft. The stirring shaft 2 can also be made of carbon steel, etc., as long as it meets the strength and corrosion resistance requirements; the shape of the internal cavity can also be designed as square, etc., according to actual needs.

[0044] Based on any of the above embodiments, the second disc 6 and / or the first disc 3 are hollow structures, and the cavities inside the second disc 6 and / or the first disc 3 are connected to the cavities inside the stirring shaft 2.

[0045] Specifically, the second disc 6 and / or the first disc 3 are hollow, and their internal cavities are connected to the internal cavity of the hollow stirring shaft 2. During operation, the heat transfer medium can flow into the internal cavity of the disc through the internal cavity of the stirring shaft 2, enabling cooling or heating of the material from within. This structure significantly increases the heat transfer area of ​​the equipment, making reaction temperature control easier and improving the overall mass and heat transfer efficiency of the equipment. This facilitates the efficient evaporation of high-viscosity distillation residues, recovers useful components from the residues, and reduces hazardous waste emissions.

[0046] Preferably, the first disk 3 is a small disk and the second disk 6 is a large disk, wherein the second disk 6 has a hollow structure.

[0047] Based on any of the above embodiments, refer to Figure 1 The outer wall of the cylinder 1 is spirally fitted with a heat exchange jacket 8 for heat exchange with the inside of the cylinder 1.

[0048] Specifically, the heat exchange jacket 8 is spirally sleeved on the outer wall of the cylinder 1, allowing heat exchange between the heat exchange medium and the material inside the cylinder 1. During heat exchange, the heat exchange medium flows within the spirally sleeved heat exchange jacket 8, enabling more thorough contact with the cylinder 1 and more even heat transfer to the material inside, thereby improving the heat transfer efficiency of the equipment and facilitating effective temperature control of the material inside the cylinder 1. A heat transfer medium, such as steam, is introduced into the heat exchange jacket 8 to heat or cool the material inside the cylinder 1 through heat exchange. The cylinder body can be made of stainless steel or similar materials; the spiral shape and size of the heat exchange jacket 8 can be designed according to actual heat transfer requirements. The heat exchange jacket 8, together with the stirring shaft 2 and the cavities within the discs, improves the mass and heat transfer efficiency of the entire stirring equipment.

[0049] Based on any of the above embodiments, refer to Figure 2 and Figure 3The scraper 5 includes a first part 51 and a second part 52 connected to each other. The first part 51 is configured to cooperate with the second T-shaped hook 7, and the second part 52 is configured to cooperate with the first T-shaped hook 4.

[0050] Specifically, the scraper 5 comprises a first part 51 and a second part 52 connected to each other. The first part 51 engages with the second T-shaped hook 7, and the second part 52 engages with the first T-shaped hook 4. During operation, the stirring shaft 2 drives the first disc 3 and the second disc 6 to rotate. The first T-shaped hook 4 engages with the second part 52, and the second T-shaped hook 7 engages with the first part 51. This effectively cleans the material adhering to the first T-shaped hook 4 and the second T-shaped hook 7, ensuring effective stirring and cleaning, enhancing the equipment's self-cleaning ability, and reducing the impact of material residue on heat transfer and stirring efficiency. The scraper 5 can be made of stainless steel, or other wear-resistant materials can be selected according to actual working conditions. The connection between the first and second parts can be a bolt connection, etc.

[0051] Based on any of the above embodiments, the first part 51 is a vertical plate-shaped structure, one end of which is fixedly connected to the inner wall of the cylinder 1, and the second part 52 is a C-shaped scraper structure, one end of which is fixedly connected to the end of the first part 51 away from the cylinder 1.

[0052] Specifically, the first part 51 has a vertical plate-like structure, with one end fixedly connected to the inner wall of the cylinder 1. The second part 52 has a C-shaped scraper structure, with one end fixedly connected to the end of the first part 51 away from the cylinder 1. During the stirring process, the first part 51, due to its stable connection to the inner wall of the cylinder 1, and the C-shaped scraper structure of the second part 52, can cooperate well with the first T-shaped hook 4 and the second T-shaped hook 7 to scrape and clean the first disc 3, the second disc 6, the T-shaped hooks, and the hollow stirring shaft 2. This connection structure and shape design effectively expands the cleaning range of the scraper, enabling the self-cleaning area ratio to reach over 85%, improving the cleaning effect, and thus enhancing the self-cleaning performance and heat transfer efficiency of the equipment.

[0053] Based on any of the above embodiments, three rows of first discs 3 are spaced apart along the circumferential direction of the stirring shaft 2, and the interval between two adjacent rows of first discs 3 forms a material flow channel.

[0054] Specifically, three rows of first discs 3 are spaced apart along the circumference of the stirring shaft 2, forming material flow channels between adjacent rows of first discs 3. When the stirring shaft rotates, the material can flow through these channels. This design is beneficial for material flow in ultra-high viscosity systems, avoiding the problems of excessive stirring power consumption and damage to discs and equipment caused by the material being forcibly squeezed in the interlocking area of ​​the discs, hooks, and cylinder scrapers without any place to release, resulting in a smoother and more stable stirring process. This structure provides larger material flow channels, making it more suitable for ultra-high viscosity systems. Compared to the pentagonal and square shapes of discs in existing technologies, the overall disc area accounts for a large proportion of the cylinder cross-section, leaving only a small gap for material flow. During the stirring process of ultra-high viscosity systems, when the discs, hooks, and cylinder scrapers interlock, the material in this area is forcibly squeezed by the inserted hooks, etc. If the material in the zone is liquid, the liquid has good fluidity and can pass through narrow disc gaps to enter the next zone. However, if the material in the zone is a highly viscous material, the material will be blocked and there will be no place or only a few places to release it. In this case, not only will the stirring power consumption be particularly high, but it will also crush the discs, leading to damage to the entire equipment.

[0055] Based on any of the above embodiments, both the first T-shaped hook 4 and the second T-shaped hook 7 are solid structures.

[0056] Specifically, the first T-shaped hook 4 and the second T-shaped hook 7 are respectively located on the side of the first disc 3 and the second disc 6 near the inner wall of the cylinder 1, and interlock with the scraper 5 fixed to the inner wall of the cylinder 1. During the stirring process, the solid T-shaped hook can withstand greater external forces than the non-solid structure. For high-viscosity distillation residue materials, the stirring force is complex. The solid T-shaped hook is not easily deformed or damaged, and can continuously and effectively cooperate with the scraper 5 to mix and knead the material, clean the inner wall of the cylinder 1, the outer wall of the hollow stirring shaft 2, and both sides of the discs, ensuring the stable realization of stirring and self-cleaning functions, extending the service life of the equipment, and improving the efficiency and reliability of the equipment in processing high-viscosity distillation residue.

[0057] The implementation principle of the horizontal single-shaft self-cleaning agitator for processing high-viscosity distillation residues according to this embodiment is as follows: The rotation of the agitator shaft 2 drives the T-shaped hooks on the first disc 3 and the second disc 6 to rotate. The T-shaped hooks interlock and mesh with the scraper 5 fixed to the inner wall of the cylinder 1, stirring, mixing, and cleaning the material. The hollow structure of the agitator shaft 2 and the discs, as well as the heat exchange jacket 8 on the outer wall of the cylinder 1, increases the heat transfer area and improves the heat transfer efficiency, effectively processing high-viscosity distillation residues, recovering useful components from the residues, and reducing hazardous waste emissions. Compared with existing technologies, this device has a simple structure, low cost, and efficient stirring and self-cleaning functions, making it suitable for processing high-viscosity materials.

[0058] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0059] The above provides a detailed description of a horizontal single-shaft self-cleaning stirring device for treating high-viscosity distillation residues. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of these embodiments are merely illustrative of the method and core concepts of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of this invention.

Claims

1. A horizontal single-shaft self-cleaning stirring device for processing high-viscosity rectification residues, comprising a cylinder (1), a shaft portion of the cylinder (1) being provided with a stirring shaft (2), characterized in that, The stirring shaft (2) is arranged with three rows of first discs (3) and second discs (6) on its outer periphery, and two rows of scrapers (5) are fixedly arranged on the inner wall of the cylinder (1). The first disc (3) is provided with a first T-shaped hook (4) on the side near the inner wall of the cylinder (1) to mix the intermediate layer material of the cylinder (1). The second disc is provided with a second T-shaped hook (7) on the side near the inner wall of the cylinder (1) to clean the inner wall of the cylinder (1). The scraper (5) interlocks and meshes with the first T-shaped hook (4) and the second T-shaped hook (7).

2. A horizontal single shaft self-cleaning agitator for processing high viscosity rectification residues according to claim 1, characterized in that, The three columns of the first disk (3) and the first T-shaped hook (4) are arranged in a spiral shape.

3. A horizontal single shaft self-cleaning agitator for processing high viscosity rectification residues according to claim 1, characterized in that, The three rows of the second disk (6) and the second T-shaped claw (7) are arranged in a spiral.

4. A horizontal single-shaft self-cleaning agitator device for processing high- viscosity rectification residues according to any one of claims 1-3, characterized in that, The stirring shaft (2) is a hollow structure, and the internal cavity of the stirring shaft (2) is used to introduce the heat transfer medium.

5. A horizontal single-shaft self-cleaning stirring device for treating high-viscosity distillation residues according to claim 4, characterized in that, The second disc (6) and / or the first disc (3) are hollow structures, and the cavities inside the second disc (6) and / or the first disc (3) are connected to the cavities inside the stirring shaft (2).

6. The horizontal single-shaft self-cleaning stirring device for treating high-viscosity distillation residue according to claim 4, characterized in that, The outer wall of the cylinder (1) is spirally fitted with a heat exchange jacket (8) for exchanging heat with the inside of the cylinder (1).

7. A horizontal single-shaft self-cleaning stirring device for treating high-viscosity distillation residue according to claim 6, characterized in that, The scraper (5) includes a first part (51) and a second part (52) connected to each other. The first part (51) is configured to cooperate with the second T-shaped hook (7), and the second part (52) is configured to cooperate with the first T-shaped hook (4).

8. A horizontal single-shaft self-cleaning stirring device for treating high-viscosity distillation residue according to claim 7, characterized in that, The first part (51) is a vertical plate structure, one end of which is fixedly connected to the inner wall of the cylinder (1). The second part (52) is a C-shaped scraper structure, one end of which is fixedly connected to the end of the first part (51) away from the cylinder (1).

9. A horizontal single-shaft self-cleaning stirring device for treating high-viscosity distillation residue according to claim 4, characterized in that, The three rows of the first discs (3) are spaced apart along the circumference of the stirring shaft (2), and the gap between two adjacent rows of the first discs (3) forms a material flow channel.

10. A horizontal single-shaft self-cleaning stirring device for treating high-viscosity distillation residue according to claim 4, characterized in that, Both the first T-shaped hook (4) and the second T-shaped hook (7) are solid structures.

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