High-viscosity material MVR drying system and method

Abstract

The invention relates to the technical field of drying equipment, and provides a high-viscosity material MVR (mechanical vapor recompression) drying system and method.The high-viscosity material MVR drying system comprises a material closed bin, a material inlet, a material outlet and a material outlet, the heat exchange tube group comprises a plurality of heat exchange tubes; an air inlet of the steam compressor communicates with the interior of the material sealing bin body and communicates with the exterior of the heat exchange pipe, and an air outlet of the steam compressor communicates with the interior of the heat exchange pipe; the circulating fan is arranged in the sealed material bin body; and the material turning and throwing device comprises a turning and throwing executing mechanism located in the material sealing bin body, the high-viscosity material MVR drying system can achieve efficient drying of materials, and especially a perfect solution for drying of the high-viscosity materials is provided.

Description

Technical Field

[0001] This application relates to the field of drying equipment technology, and more specifically, to an MVR drying system and method for high-viscosity materials. Background Technology

[0002] Mechanical vapor recompression (MVR) is an energy-saving technology that has emerged in recent years. In an MVR system, secondary steam generated in the evaporator is drawn into and compressed by a compressor, increasing its temperature and pressure. This compressed steam is then returned to the evaporator to continue participating in the evaporation process as a heat source. Through this cyclical process, the evaporation operation, which originally required a large amount of energy, now relies on this recycled steam, thus achieving energy savings. MVR technology is currently widely used in the evaporation and concentration of flowable liquids, but due to the characteristics of heat and mass transfer in water, there are still many problems to be solved in the drying of non-flowable solids, and it is still in the research and development stage.

[0003] Reported MVR solid material drying technologies include MVR paddle dryers, MVR disc dryers, MVR multi-layer flat scraper dryers, and MVR multi-layer mesh chain dryers. These methods dry highly viscous materials (such as activated sludge with added flocculants, fruit pomace, etc.) through steam heat exchange pipes within the material silo. However, these methods suffer from drawbacks such as material clumping, difficulty in internal drying, and adhesion to the surface of the steam heat exchange pipes, which is difficult to scrape off, leading to decreased heat exchange efficiency and significantly reducing the drying efficiency of the MVR dryer. Summary of the Invention

[0004] In view of this, this application provides a high-viscosity material MVR drying system to solve the technical problem of low drying efficiency in existing material MVR drying equipment.

[0005] This application provides an MVR drying system for high-viscosity materials, comprising: A material enclosed silo, which has a material inlet and a material outlet; At least one heat exchange tube group, wherein the heat exchange tube group comprises multiple heat exchange tubes; A steam compressor, wherein the inlet of the steam compressor is connected to the interior of the material enclosed silo and to the exterior of the heat exchange tube, and the outlet of the steam compressor is connected to the interior of the heat exchange tube; A circulating fan is installed inside the enclosed material storage chamber. A material turning and throwing device, the material turning and throwing device including a turning and throwing actuator located inside the material enclosed silo.

[0006] Furthermore, the circulating fan, heat exchange tube assembly, and tumbling actuator are arranged sequentially from top to bottom within the material enclosed silo.

[0007] Furthermore, the positions of the material inlet and material outlet along the height direction of the material enclosed silo correspond to the positions of the turning and throwing actuator along the height direction of the material enclosed silo.

[0008] Furthermore, the at least one set of heat exchange tube groups includes a central heat exchange tube group and side heat exchange tube groups located on both sides of the central heat exchange tube group along the width direction of the material enclosed silo. The circulating fan has multiple units, and the multiple circulating fans are arranged sequentially above the central heat exchange tube group along the length direction of the material enclosed silo.

[0009] Furthermore, the central heat exchange tube assembly includes a first collection chamber and a second collection chamber, as well as multiple first heat exchange tubes extending along the length direction of the material closed chamber. One end of each first heat exchange tube along the length direction of the material closed chamber is connected to the first collection chamber and leads to the interior of the first collection chamber, and the other end of each first heat exchange tube along the length direction of the material closed chamber is connected to the second collection chamber and leads to the interior of the second collection chamber. The side heat exchange tube assembly includes a third collection chamber and a fourth collection chamber, as well as multiple second heat exchange tubes extending along the length of the material closed chamber. One end of each second heat exchange tube along the length of the material closed chamber is connected to the third collection chamber and leads to the interior of the third collection chamber. The other end of each second heat exchange tube along the length of the material closed chamber is connected to the fourth collection chamber and leads to the interior of the fourth collection chamber. The air inlet of the steam compressor is connected to the interior of the material enclosed silo via a first pipe, and the air outlet of the steam compressor is connected to the interior of the first collection silo and the interior of the third collection silo via a second pipe. The high-viscosity material MVR drying system also includes a drain pipe with an inlet and an outlet. The inlet of the drain pipe is connected to the second collection chamber and the fourth collection chamber, and the outlet of the drain pipe leads to the outside of the material enclosed chamber.

[0010] Furthermore, the material turning and throwing device includes a first rotary drive device and a second rotary drive device located outside the material enclosed hopper. The first rotary drive device is connected to a first rotating shaft, and the second rotary drive device is connected to a second rotating shaft. The turning and throwing execution mechanism includes a first rotary turning and throwing structure and a second rotary turning and throwing structure. The first rotating shaft extends into the material enclosed hopper and is connected to the first rotary turning and throwing structure, and the second rotating shaft extends into the material enclosed hopper and is connected to the second rotary turning and throwing structure. The axes of the first rotating shaft and the second rotating shaft extend along the length direction of the material enclosed hopper.

[0011] Furthermore, the circulating fan can generate a main airflow passing through the circulating fan from top to bottom. The main airflow flows out from the lower end of the circulating fan and passes through the central heat exchange tube assembly from top to bottom to form a first branch airflow and a second branch airflow. The first branch airflow passes through the first rotating and turning structure and flows back upward to the upper end of the circulating fan. The second branch airflow passes through the second rotating and turning structure and flows back upward to the upper end of the circulating fan.

[0012] Furthermore, the first rotary turning structure includes a plurality of first turntables connected to the first rotating shaft. The plurality of first turntables are arranged sequentially at intervals along the axial direction of the first rotating shaft. A plurality of first turning toothed plates are connected between adjacent first turntables. The plurality of first turning toothed plates are arranged at intervals around the axis of the first rotating shaft and extend parallel to the axis of the first rotating shaft. The second rotary turning structure includes a plurality of second turntables connected to the second rotating shaft. The plurality of second turntables are arranged sequentially at intervals along the axial direction of the second rotating shaft. A plurality of second turning toothed plates are connected between adjacent second turntables. The plurality of second turning toothed plates are arranged at intervals around the axis of the second rotating shaft and extend parallel to the axis of the second rotating shaft. Both the first turntable and the second turntable have material passage holes.

[0013] Furthermore, the material inlet is formed on one side of the width direction of the material enclosed hopper, and the material outlet is formed on one side of the length direction of the material enclosed hopper and aligned with the position between the first turntable and the second turntable.

[0014] In addition, the present invention also provides a method for drying high-viscosity materials by MVR, wherein the method for drying high-viscosity materials by MVR is implemented based on the above-mentioned method for drying high-viscosity materials by MVR, and the method for drying high-viscosity materials by MVR includes a first working mode, a second working mode and a third working mode. The first working mode includes the following steps: introducing the material to be dried into the interior of the material enclosed chamber through the material inlet, starting the steam compressor, starting the circulating fan so that the circulating fan forms a main airflow passing through the circulating fan from top to bottom, and starting the first rotary drive device and the second rotary drive device so that the first rotating shaft and the second rotating shaft both rotate clockwise or both rotate counterclockwise. The second working mode includes the following steps: introducing the material to be dried into the interior of the material enclosed chamber through the material inlet, starting the steam compressor, starting the circulating fan to form a main airflow passing through the circulating fan from top to bottom, and starting the first rotary drive device and the second rotary drive device to make the first rotating shaft rotate clockwise and the second rotating shaft rotate counterclockwise. The third working mode includes the following steps: introducing the material to be dried into the interior of the material enclosed chamber through the material inlet, starting the steam compressor, starting the circulating fan to form a main airflow passing through the circulating fan from top to bottom, and starting the first rotary drive device and the second rotary drive device to make the first rotating shaft rotate counterclockwise and the second rotating shaft rotate clockwise.

[0015] The beneficial effects of the MVR drying system for high-viscosity materials provided in this application are as follows: Because the MVR drying system for high-viscosity materials provided by this invention has a circulating fan and a material turning and throwing device, on the one hand, the circulating fan can generate a circulating airflow in the closed material chamber to promote the circulation of superheated steam between the material to be dried and the heat exchange tube assembly. On the other hand, the motor of the material turning and throwing device scatters and turns the high-viscosity material, so that the material comes into full contact with the superheated steam and dries, thereby achieving efficient drying of the material. In particular, it provides a perfect solution for drying high-viscosity materials, and well-dried materials are difficult to adhere to the surface of the heat exchange tubes.

[0016] Another significant advantage of this invention is that when drying materials containing plant essential oils or other volatile substances, the material is continuously turned over and the MVR vapor compression technology is combined with a fully enclosed structure. Water vapor and essential oils are efficiently condensed in the heat exchange tubes, and essential oils or other volatile substances can be separated from the discharged condensate, which further increases economic benefits.

[0017] In a further embodiment, the rotating first and second turning toothed plates continuously scatter and turn the highly viscous material, allowing the material to come into full contact with the superheated steam and dry. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A three-dimensional schematic diagram of a partial structure of an MVR drying system for high-viscosity materials provided in one embodiment of this application; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 Enlarged view of point B in the middle; Figure 4 A perspective view of an MVR drying system for high-viscosity materials provided in one embodiment of this application; Figure 5 for Figure 4 Enlarged view of point C in the middle; Figure 6 A three-dimensional schematic diagram of a partial structure of an MVR drying system for high-viscosity materials provided in one embodiment of this application; Figure 7 for Figure 6 Enlarged view at point D; Figure 8 A schematic diagram of the airflow direction of a high-viscosity material MVR drying system provided in an embodiment of this application when the circulating fan is turned on; Figure 9 A schematic diagram of the operation of a high-viscosity material MVR drying system in a first operating mode, provided for an embodiment of this application; Figure 10 A schematic diagram of the operation of a high-viscosity material MVR drying system in a second working mode, provided as an embodiment of this application; Figure 11 This is a schematic diagram of the high-viscosity material MVR drying system in its third operating mode, provided as an embodiment of this application.

[0021] Explanation of icon numbers: 1-Steam compressor; 2-Circulating fan; 3-First pipeline; 4-Second pipeline; 5-First rotary drive device; 6-Second rotary drive device; 7-First rotating shaft; 8-Second rotating shaft; 9-First turntable; 10-First tilting toothed plate; 11-Second turntable; 12-Second tilting toothed plate; 13-Material passage hole; 14-Drain hole; 100-Material enclosed chamber; 101-Material enclosed chamber; 102-Sealing plate; 103-Material inlet; 104-Material outlet; 200-Central heat exchanger tube assembly; 201-First collection chamber; 202-Second collection chamber; 203-First heat exchanger tube; 204-First steam inlet; 300-Side heat exchanger tube assembly; 301-Third collection chamber; 302-Fourth collection chamber; 303-Second heat exchanger tube; 304-Second steam inlet. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] It should be noted that when a component is referred to as being "fixed to" or "located on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] To illustrate the technical solutions described in this application, the following detailed description is provided in conjunction with specific drawings and embodiments.

[0027] See Figures 1 to 11This invention provides a high-viscosity material MVR drying system, which is particularly suitable for drying activated sludge, fruit pomace, and other suitable materials such as materials containing plant essential oils, etc. The high-viscosity material MVR drying system includes: The material enclosed silo 100 has a material inlet 103 and a material outlet 104. Specifically, the material enclosed silo 100 may include an installation frame 101 and a sealing plate 102 detachably connected to the installation frame 101. At least one heat exchange tube group, which includes multiple heat exchange tubes; Steam compressor 1, the inlet of steam compressor 1 is connected to the inside of the material enclosed silo 100 and to the outside of the heat exchange tube, and the outlet of steam compressor 1 is connected to the inside of the heat exchange tube. Circulating fan 2 is installed inside the material enclosed silo 100; The material turning and throwing device includes a turning and throwing actuator located inside the material enclosed silo 100.

[0028] Because the MVR drying system for high-viscosity materials provided by this invention has a circulating fan 2 and a material turning and throwing device, on the one hand, the circulating fan 2 can generate a circulating airflow in the material closed chamber 100 to promote the circulation of superheated steam between the material to be dried and the heat exchange tube assembly. On the other hand, the motor of the material turning and throwing device scatters and turns the high-viscosity material, so that the material is fully in contact with the superheated steam and dried, thereby achieving efficient drying of the material. In particular, it provides a perfect solution for drying high-viscosity materials. Well-dried materials are difficult to adhere to the surface of the heat exchange tubes. When drying materials containing plant essential oils, the essential oils can be separated from the condensate discharged from the heat exchange tubes.

[0029] According to one embodiment of this application, the circulating fan 2, the heat exchange tube assembly, and the turning and throwing actuator are arranged sequentially from top to bottom within the material enclosed silo 100. Of course, the spatial layout of the circulating fan 2, the heat exchange tube assembly, and the turning and throwing actuator within the material enclosed silo 100 provided in this application is not limited to this embodiment. The relative positional relationship of the circulating fan 2, the heat exchange tube assembly, and the turning and throwing actuator within the material enclosed silo 100 can be flexibly adjusted according to actual needs.

[0030] According to a preferred embodiment of this application, the positions of the material inlet 103 and the material outlet 104 along the height direction of the material enclosed silo 100 correspond to the positions of the turning and throwing actuator along the height direction of the material enclosed silo 100, ensuring that the material entering the material enclosed silo 100 is mainly turned and transported in the bottom space of the corresponding turning and throwing actuator, without interfering with the heat exchange tube group and circulating fan 2 above.

[0031] According to one embodiment of this application, at least one heat exchange tube assembly includes a central heat exchange tube assembly 200 and side heat exchange tube assemblies 300 located on both sides of the central heat exchange tube assembly 200 along the width direction of the material enclosed silo 100. There are multiple circulating fans 2, and the multiple circulating fans 2 are arranged sequentially above the central heat exchange tube assembly 200 along the length direction of the material enclosed silo 100. Specifically, the multiple circulating fans 2 can be connected above the central heat exchange tube assembly 200 by a known mechanical connection method.

[0032] According to one embodiment of this application, the central heat exchanger tube assembly 200 includes a first collection chamber 201 and a second collection chamber 202, and a plurality of first heat exchanger tubes 203 extending along the length direction of the material enclosed chamber 100. One end of each first heat exchanger tube 203 along the length direction of the material enclosed chamber 100 is connected to the first collection chamber 201 and leads to the interior of the first collection chamber 201, and the other end of each first heat exchanger tube 203 along the length direction of the material enclosed chamber 100 is connected to the second collection chamber 202 and leads to the interior of the second collection chamber 202. The side heat exchange tube assembly 300 includes a third collection chamber 301 and a fourth collection chamber 302, as well as multiple second heat exchange tubes 303 extending along the length of the material closed chamber 100. One end of each second heat exchange tube 303 along the length of the material closed chamber 100 is connected to the third collection chamber 301 and leads into the interior of the third collection chamber 301. The other end of each second heat exchange tube 303 along the length of the material closed chamber 100 is connected to the fourth collection chamber 302 and leads into the interior of the fourth collection chamber 302. The air inlet of the steam compressor 1 is connected to the interior of the material enclosed silo 100 through the first pipe 3, and the air outlet of the steam compressor 1 is connected to the interior of the first collection silo 201 and the interior of the third collection silo 301 through the second pipe 4. Specifically, the first collection silo 201 is provided with a first steam inlet 204, which is connected to the second pipe 4 through a corresponding branch pipe (not shown). The third collection silo 301 is provided with a second steam inlet 304, which is connected to the second pipe 4 through a corresponding branch pipe (not shown). The MVR drying system for high-viscosity materials also includes a drain pipe (not shown), which has an inlet and an outlet. The inlet of the drain pipe is connected to the second collection chamber 202 and the fourth collection chamber 302, and the outlet of the drain pipe leads to the outside of the material enclosed chamber 100. Specifically, the second collection chamber 202 and the fourth collection chamber 302 are provided with drain holes 14 that are connected to the drain pipe.

[0033] The central heat exchanger tube group 200 and the side heat exchanger tube group 300 in the embodiments of this application have a similar structure to the shell and tube heat exchanger structure. Of course, the number and structure of the central heat exchanger tube group 200 and the side heat exchanger tube group 300 provided in this application are not limited to the specific embodiments exemplified above.

[0034] According to one embodiment of this application, the material turning and throwing device includes a first rotary drive device 5 and a second rotary drive device 6 located outside the material enclosed silo 100. The first rotary drive device 5 is connected to a first rotating shaft 7, and the second rotary drive device 6 is connected to a second rotating shaft 8. The turning and throwing execution mechanism includes a first rotary turning and throwing structure and a second rotary turning and throwing structure. The first rotating shaft 7 extends into the material enclosed silo 100 and is connected to the first rotary turning and throwing structure. The second rotating shaft 8 extends into the material enclosed silo 100 and is connected to the second rotary turning and throwing structure. The axes of the first rotating shaft 7 and the second rotating shaft 8 extend along the length direction of the material enclosed silo 100. The first rotary drive device 5 and the second rotary drive device 6 can specifically be motors. Of course, the specific structural form of the material turning and throwing device and the number of the first rotary drive device 5 and the second rotary drive device 6 are not limited to this embodiment.

[0035] According to one embodiment of this application, the circulating fan 2 can generate a main airflow S passing through the circulating fan 2 from top to bottom. The main airflow S flows out from the lower end of the circulating fan 2 and passes through the central heat exchange tube group 200 from top to bottom (specifically through the gap between the heat exchange tubes) to form a first branch airflow P and a second branch airflow T. The first branch airflow P passes through the first rotating and turning structure and flows back upward to the upper end of the circulating fan 2. The second branch airflow T passes through the second rotating and turning structure and flows back upward to the upper end of the circulating fan 2. This process is repeated to form two circulating airflows, which continuously disperse the material to be dried, greatly improving the drying efficiency of viscous materials.

[0036] According to one embodiment of this application, a first rotary turning and throwing structure includes a plurality of first turntables 9 connected to a first rotating shaft 7. The plurality of first turntables 9 are arranged sequentially at intervals along the axial direction of the first rotating shaft 7. A plurality of first turning and throwing toothed plates 10 are connected between adjacent first turntables 9. The plurality of first turning and throwing toothed plates 10 are arranged at intervals around the axis of the first rotating shaft 7 and extend parallel to the axis of the first rotating shaft 7. A second rotary turning and throwing structure includes a plurality of second turntables 11 connected to a second rotating shaft 8. The plurality of second turntables 11 are arranged sequentially at intervals along the axial direction of the second rotating shaft 8. A plurality of second turning and throwing toothed plates 12 are connected between adjacent second turntables 11. Plates 12 are arranged at intervals around the axis of the second rotating shaft 8. The second turning toothed plate 12 extends parallel to the axis of the second rotating shaft 8. Both the first turntable 9 and the second turntable 11 have material passage holes 13 to facilitate the material to move from the material inlet 103 to the material outlet 104. The material outlet 104 can be connected to a pump. After the first rotary drive device 5 and the second rotary drive device 6 are started, they drive each first turning toothed plate 10 to rotate around the first rotating shaft 7 and each second turning toothed plate 12 to rotate around the second rotating shaft 8. The rotating first turning toothed plate 10 and the second turning toothed plate 12 continuously scatter and turn the highly viscous material, so that the material comes into full contact with the superheated steam and dries.

[0037] According to a specific embodiment of this application, a material inlet 103 is formed on one side of the material enclosed silo 100 in the width direction, and a material outlet 104 is formed on one side of the material enclosed silo 100 in the length direction and aligned with the position between the first turntable 9 and the second turntable 11.

[0038] In addition, the present invention also provides a high-viscosity material MVR drying method, wherein the high-viscosity material MVR drying method is implemented based on the above-mentioned high-viscosity material MVR drying method, and the high-viscosity material MVR drying method includes a first working mode, a second working mode and a third working mode. The first working mode includes the following steps: Material to be dried is introduced into the material enclosed chamber 100 through the material inlet 103; the steam compressor 1 is started; the circulating fan 2 is started to form a main airflow S flowing from top to bottom through the circulating fan 2; the first rotary drive device 5 and the second rotary drive device 6 are started to make the first rotating shaft 7 and the second rotating shaft 8 rotate clockwise or counterclockwise. At this time, the material tumbled by one of the rotary tumbling structures (e.g., the first rotary tumbling structure) collides and mixes with the main airflow S flowing upward and downward between the first and second rotary tumbling structures; the material tumbled by the other rotary tumbling structure (e.g., the second rotary tumbling structure) mixes downward and upward between the first and second rotary tumbling structures. The downward-flowing main airflow S mixes in the same direction, causing changes in the flow velocities of the first branch airflow P and the second branch airflow T. The material that collides and mixes with the main airflow S has a longer contact time with the main airflow S. This situation applies when there is a difference in the material thickness in the corresponding areas of the first and second rotary turning structures. For example, when the material thickness in the corresponding area of ​​the first rotary turning structure is thicker than that in the corresponding area of ​​the second rotary turning structure, the material turned by the first rotary turning structure can collide and mix with the upward-flowing main airflow S between the first and second rotary turning structures, and the material turned by the second rotary turning structure can mix with the downward-flowing main airflow S between the first and second rotary turning structures. The second working mode includes the following steps: the material to be dried is introduced into the interior of the material enclosed chamber 100 through the material inlet 103; the steam compressor 1 is started; the circulating fan 2 is started so that the circulating fan 2 forms a main airflow S passing through the circulating fan 2 from top to bottom; the first rotary drive device 5 and the second rotary drive device 6 are started so that the first rotating shaft 7 rotates clockwise and the second rotating shaft 8 rotates counterclockwise. This situation is applicable when the material thickness in the corresponding areas of the first rotary turning structure and the second rotary turning structure is the same or not much different, and at this time the material thickness in the corresponding areas of the first rotary turning structure and the second rotary turning structure is relatively thin. At this time, the material turned by the first rotary turning structure and the second rotary turning structure is mixed downward with the downward flowing main airflow S between the first rotary turning structure and the second rotary turning structure. The third working mode includes the following steps: the material to be dried is introduced into the interior of the material enclosed chamber 100 through the material inlet 103, the steam compressor 1 is started, the circulating fan 2 is started so that the circulating fan 2 forms a main airflow S from top to bottom through the circulating fan 2, the first rotary drive device 5 and the second rotary drive device 6 are started so that the first rotating shaft 7 rotates counterclockwise and the second rotating shaft 8 rotates clockwise. This situation is applicable when the material thickness in the corresponding areas of the first rotary turning structure and the second rotary turning structure is the same or not much different, and at this time the material thickness in the corresponding areas of the first rotary turning structure and the second rotary turning structure is relatively thick.

[0039] Of course, this application may flexibly select the above three working modes (first working mode, second working mode and third working mode) according to actual needs, or flexibly combine these three working modes and run them alternately.

[0040] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-viscosity material MVR drying system, characterized in that, include: A material enclosed silo, which has a material inlet and a material outlet; At least one heat exchange tube group, wherein the heat exchange tube group comprises multiple heat exchange tubes; A steam compressor, wherein the inlet of the steam compressor is connected to the interior of the material enclosed silo and to the exterior of the heat exchange tube, and the outlet of the steam compressor is connected to the interior of the heat exchange tube; A circulating fan is installed inside the enclosed material storage chamber. A material turning and throwing device, the material turning and throwing device including a turning and throwing actuator located inside the material enclosed silo.

2. The MVR drying system for high-viscosity materials according to claim 1, characterized in that, The circulating fan, heat exchange tube assembly, and turning / throwing actuator are arranged sequentially from top to bottom within the enclosed material storage chamber.

3. The MVR drying system for high-viscosity materials according to claim 2, characterized in that, The positions of the material inlet and material outlet along the height direction of the material enclosed silo correspond to the positions of the turning and throwing actuator along the height direction of the material enclosed silo.

4. The MVR drying system for high-viscosity materials according to claim 3, characterized in that, The at least one set of heat exchange tube groups includes a central heat exchange tube group and side heat exchange tube groups located on both sides of the central heat exchange tube group along the width direction of the material enclosed silo. The circulating fan has multiple units, and the multiple circulating fans are arranged sequentially above the central heat exchange tube group along the length direction of the material enclosed silo.

5. The MVR drying system for high-viscosity materials according to claim 4, characterized in that, The central heat exchange tube assembly includes a first collection chamber and a second collection chamber, as well as multiple first heat exchange tubes extending along the length of the material closed chamber. One end of each first heat exchange tube along the length of the material closed chamber is connected to the first collection chamber and leads to the interior of the first collection chamber, and the other end of each first heat exchange tube along the length of the material closed chamber is connected to the second collection chamber and leads to the interior of the second collection chamber. The side heat exchange tube assembly includes a third collection chamber and a fourth collection chamber, as well as multiple second heat exchange tubes extending along the length of the material closed chamber. One end of each second heat exchange tube along the length of the material closed chamber is connected to the third collection chamber and leads to the interior of the third collection chamber. The other end of each second heat exchange tube along the length of the material closed chamber is connected to the fourth collection chamber and leads to the interior of the fourth collection chamber. The air inlet of the steam compressor is connected to the interior of the material enclosed silo via a first pipe, and the air outlet of the steam compressor is connected to the interior of the first collection silo and the interior of the third collection silo via a second pipe. The high-viscosity material MVR drying system also includes a drain pipe with an inlet and an outlet. The inlet of the drain pipe is connected to the second collection chamber and the fourth collection chamber, and the outlet of the drain pipe leads to the outside of the material enclosed chamber.

6. The MVR drying system for high-viscosity materials according to claim 5, characterized in that, The material turning and throwing device includes a first rotary drive device and a second rotary drive device located outside the material enclosed silo. The first rotary drive device is connected to a first rotating shaft, and the second rotary drive device is connected to a second rotating shaft. The turning and throwing execution mechanism includes a first rotary turning and throwing structure and a second rotary turning and throwing structure. The first rotating shaft extends into the material enclosed silo and is connected to the first rotary turning and throwing structure, and the second rotating shaft extends into the material enclosed silo and is connected to the second rotary turning and throwing structure. The axes of the first rotating shaft and the second rotating shaft extend along the length direction of the material enclosed silo.

7. The MVR drying system for high-viscosity materials according to claim 6, characterized in that, The circulating fan can generate a main airflow passing through it from top to bottom. The main airflow flows out from the lower end of the circulating fan and passes through the central heat exchange tube assembly from top to bottom to form a first branch airflow and a second branch airflow. The first branch airflow passes through the first rotating and turning structure and flows back upward to the upper end of the circulating fan. The second branch airflow passes through the second rotating and turning structure and flows back upward to the upper end of the circulating fan.

8. The MVR drying system for high-viscosity materials according to claim 6, characterized in that, The first rotary turning structure includes a plurality of first turntables connected to the first rotating shaft. The plurality of first turntables are arranged sequentially at intervals along the axial direction of the first rotating shaft. A plurality of first turning toothed plates are connected between adjacent first turntables. The plurality of first turning toothed plates are arranged at intervals around the axis of the first rotating shaft and extend parallel to the axis of the first rotating shaft. The second rotary turning structure includes a plurality of second turntables connected to the second rotating shaft. The plurality of second turntables are arranged sequentially at intervals along the axial direction of the second rotating shaft. A plurality of second turning toothed plates are connected between adjacent second turntables. The plurality of second turning toothed plates are arranged at intervals around the axis of the second rotating shaft and extend parallel to the axis of the second rotating shaft. Both the first turntable and the second turntable have material passage holes.

9. The MVR drying system for high-viscosity materials according to claim 8, characterized in that, The material inlet is formed on one side of the material enclosed hopper in the width direction, and the material outlet is formed on one side of the material enclosed hopper in the length direction and aligned with the position between the first turntable and the second turntable.

10. A method for MVR drying of high-viscosity materials, characterized in that, The high-viscosity material MVR drying method is implemented based on the high-viscosity material MVR drying method according to claim 9, and the high-viscosity material MVR drying method includes a first working mode, a second working mode and a third working mode; The first working mode includes the following steps: introducing the material to be dried into the interior of the material enclosed chamber through the material inlet, starting the steam compressor, starting the circulating fan so that the circulating fan forms a main airflow passing through the circulating fan from top to bottom, and starting the first rotary drive device and the second rotary drive device so that the first rotating shaft and the second rotating shaft both rotate clockwise or both rotate counterclockwise. The second working mode includes the following steps: introducing the material to be dried into the interior of the material enclosed chamber through the material inlet, starting the steam compressor, starting the circulating fan to form a main airflow passing through the circulating fan from top to bottom, and starting the first rotary drive device and the second rotary drive device to make the first rotating shaft rotate clockwise and the second rotating shaft rotate counterclockwise. The third working mode includes the following steps: introducing the material to be dried into the interior of the material enclosed chamber through the material inlet, starting the steam compressor, starting the circulating fan to form a main airflow passing through the circulating fan from top to bottom, and starting the first rotary drive device and the second rotary drive device to make the first rotating shaft rotate counterclockwise and the second rotating shaft rotate clockwise.

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