A dehydration regeneration treatment device and method for high-water-content waste organic solvent

Abstract

The application provides a kind of high water content waste organic solvent dehydration regeneration treatment equipment and method, it is related to distillation rough dehydration technical field, the application includes tower body, tower body can be fixed and installed on ground by the aid of support, the bottom of tower body is connected and installed with high boiling point discharge pipe, low boiling point discharge pipe is installed at the position close to top of tower body side, feed pipe is installed at the top of tower body, azeotrope is set at the position close to bottom of tower body side, circulating unit and steam cloth unit are arranged in the inside of tower body, the linkage transmission of track ring, walking bevel gear, fixed bevel gear and autorotation bevel gear makes circulating fan blade complete around the center revolution, self rotation and posture overturning simultaneously, continuously breaks the laminar state of steam in tower, strengthens the turbulence degree of steam flow field, promotes gas-liquid two-phase fully mixed contact, effectively improves heat and mass transfer efficiency.

Description

Technical Field

[0001] This invention relates to the field of distillation and crude dehydration technology, and in particular to a dehydration and regeneration treatment device and method for waste organic solvents with high water content. Background Technology

[0002] In the azeotropic dehydration distillation of waste organic solvents, the heat and mass transfer efficiency between vapor and liquid in the column directly determines the dehydration accuracy and recovery efficiency of the solvent. The flow state of vapor in the column is the core factor affecting the gas-liquid mass transfer effect. In conventional distillation columns, vapor flows upward in a stable laminar flow state. The gas-liquid interface is updated slowly, resulting in high mass transfer resistance. This leads to insufficient vaporization and removal of water in the solvent. Especially when dealing with waste solvents with high water content, incomplete dehydration and substandard water content of the recovered solvent are very likely to occur. Therefore, it is necessary to set up a turbulence structure in the column to improve the vapor flow field state and enhance the gas-liquid mass transfer effect.

[0003] The existing turbulence structures in distillation columns are mainly of two types: passive and active. Passive turbulence structures mostly adopt the form of fixed baffles, corrugated packing, etc., which can only passively change the airflow direction by their own structure. The turbulence effect is weak and cannot fundamentally break the laminar flow state of steam. The flow field improvement effect is very limited and it is difficult to meet the deep dehydration requirements of materials with high moisture content.

[0004] Active turbulence structures typically employ a central shaft to drive single or multiple layers of stirring blades, relying on the rotation of these blades to agitate the airflow. However, these turbulence devices can only rotate in a single plane around a fixed central axis, resulting in a single turbulence dimension. They can only generate axial airflow disturbances and cannot create sufficient turbulence throughout the entire space within the tower. The laminar flow structure of the steam cannot be effectively disrupted, leading to insufficient mixing and contact between the gas and liquid phases, and thus limited improvement in heat and mass transfer efficiency. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dehydration and regeneration treatment device and method for waste organic solvents with high water content.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a dehydration and regeneration treatment device for waste organic solvents with high water content, comprising a tower body, which can be fixedly installed on the ground with the aid of a support. A high-boiling-point discharge pipe is connected to the bottom of the tower body, a low-boiling-point discharge pipe is installed on the side of the tower body near the top, and a feed pipe is installed on the top of the tower body. The feed pipe can input waste organic solvents into the tower body. An azeotrope is provided on the side of the tower body near the bottom, wherein the azeotrope allows steam to float upward from the bottom of the tower body to heat the waste organic solvents. The low-boiling-point steam can be discharged along the low-boiling-point discharge pipe, and the high-boiling-point solvents can be discharged through the high-boiling-point discharge pipe. The tower body is provided with a circulation unit and a steam distribution unit, wherein the steam distribution unit can spray the condensed steam back onto the distribution material for reheating and distillation.

[0007] The effects achieved by the above components are as follows: the support frame provides stable support for the tower body; the feed pipe completes the feeding of waste organic solvents; the azeotrope generates upward hot steam to azeotropically heat the material, realizing the vaporization and separation of solvent components; low-boiling-point steam is led out through the low-boiling-point discharge pipe, and high-boiling-point residue material is discharged through the high-boiling-point discharge pipe; the steam distribution unit can re-spray and disperse the condensed solvent, allowing the solvent to come into contact with hot steam again for distillation and vaporization; and the circulation unit cooperates to realize the material circulation treatment, improving the solvent recovery and utilization rate.

[0008] Preferably, the tower body is provided with a heat insulation component, wherein a heat exchange liquid with the same boiling point as the low-boiling-point solvent flows inside the heat insulation component, and the steam can be kept at a constant temperature by means of the heat exchange liquid. At this time, the low-boiling-point steam passing through the heat insulation component continues to rise, while the high-boiling-point steam condenses on the heat insulation component and drips down.

[0009] The effects achieved by the above components are as follows: heat exchange fluid with a matching boiling point is introduced into the heat insulation component to maintain a constant surface temperature of the component. The upward-flowing mixed steam is subjected to constant-temperature condensation treatment. High-boiling-point steam with a boiling point lower than the temperature of the heat exchange fluid liquefies and condenses upon cooling, while low-boiling-point steam that meets the boiling point conditions continues to flow upward without obstruction. This achieves the initial separation of solvent components with different boiling points and reduces the escape of high-boiling-point components with the steam.

[0010] Preferably, the insulation component clamps the first and second flow guide fins, wherein inclined heat dissipation fins are uniformly arranged inside the first and second flow guide fins, and the heat dissipation fins inside the first and second flow guide fins are symmetrically distributed in the horizontal direction. A copper tube is sandwiched between the first and second flow guide fins, and the copper tube is bent between the first and second flow guide fins. Both ends of the copper tube can extend out of the tower body and be connected to the heating system. The heating system can be used to heat the heat exchange fluid flowing inside the copper tube at a constant temperature, and at the same time, the heat exchange fluid can be circulated in the copper tube to heat the steam inside the tower body.

[0011] The effects achieved by the above components are as follows: the bent copper tube is sandwiched between the first and second guide fins, the heat exchange liquid circulates inside the copper tube, and the heat is conducted to the heat dissipation fins on both sides, increasing the heat exchange contact area with the steam. The inclined and symmetrical heat dissipation fins can guide the steam flow and facilitate the condensed solvent droplets to flow down the fins, ensuring the stability of the constant temperature condensation effect.

[0012] Preferably, a circulation assembly is installed on the side of the tower body. The circulation assembly includes a delivery pipe. The bottom end of the delivery pipe is connected to a position near the bottom of the side of the tower body, and the other end of the delivery pipe is connected to a position near the top of the side of the tower body. A circulation pump is installed in the middle of the delivery pipe. The circulation pump can pump the high-boiling-point solution at the bottom of the tower body to the inside of the tower body near the top for spraying. The sprayed high-boiling-point solvent drips downwards and exchanges heat with the rising hot air to generate steam.

[0013] The effects achieved by the above components are as follows: the circulating pump transports the high-boiling-point solution that has not been fully treated at the bottom of the tower to the upper part of the tower for spraying through the delivery pipe. The falling droplets and the rising high-temperature steam at the bottom form a counter-current contact, which fully exchanges heat and causes the residual recyclable solvent in the solution to vaporize again, reducing the solvent residue in the bottom residue and improving the overall recovery rate.

[0014] Preferably, the steam fabric distribution unit includes an internal support frame, which is fixedly installed inside the tower body. A collecting hood is fixedly installed inside the internal support frame. The collecting hood is a circular hood with an upward arc in the middle, and the opening of the hood faces downward. Heated steam flows upward from the bottom of the tower body. The steam condenses upon contact with the bottom of the collecting hood. The condensed solvent can flow downward along the inner wall of the collecting hood. Drainage needles are evenly installed at the bottom of the collecting hood. The condensed solvent can flow downward along the drainage needles and drip into the circulation unit. The circulation unit can spray the condensed solvent onto the fabric to evaporate again upon contact with the hot air.

[0015] The above components achieve the following effects: the internal support frame provides fixed support for the collecting hood, the upward-flowing steam condenses upon contact with the downward-facing bottom surface of the collecting hood, the liquid droplets collect along the curved inner wall to the edge, and then fall into the circulation unit through the guide needle, avoiding the condensed solvent from splashing everywhere, realizing the unified collection of condensed solvent, and providing a material source for secondary spray evaporation.

[0016] Preferably, a top input shaft is rotatably inserted into the upper end of the tower body, the bottom of the top input shaft extends into the tower body, a guide fan blade is fixedly connected to the bottom end of the top input shaft, the top input shaft and the collecting shroud are rotatably assembled, a top drive motor is installed at the upper end of the tower body, the top drive motor can drive the top input shaft to rotate to drive the guide fan blade to rotate to assist the rising steam to accelerate upward flow and discharge.

[0017] The effects achieved by the above components are as follows: the top drive motor drives the top input shaft and the guide fan blades to rotate continuously, generating an upward airflow thrust, which helps the low-boiling-point steam inside the tower to move upward, accelerates the flow of steam to the low-boiling-point discharge pipe, reduces the retention of steam in the upper part of the tower, and improves the steam discharge efficiency.

[0018] Preferably, the circulation unit includes an installation ring, which is fixedly installed inside the tower body. An annular collection groove is provided at the upper end of the installation ring, and a spray section is provided inside the annular collection groove. Solvent dripping from the guide needle can fall into the annular collection groove. The spray section can rotate around the central axis of the installation ring to spray the solvent in the annular collection groove towards the center of the installation ring. A collecting ring is provided at the upper end of the installation ring, with its center tilted downwards. Solvent dripping from the guide needle can flow downwards along the collecting ring into the annular collection groove. A guide tube is installed at the upper end of the installation ring relative to the center. The guide tube can transport steam along with a guide hood towards the edge of the tower body. The tip of the guide hood points downwards, and solvent dripping from the center of the collecting hood can fall into the center of the guide hood and flow along the bottom guide tube of the guide hood into the annular collection groove.

[0019] The effects achieved by the above components are as follows: the collecting ring and the guide hood work together with the guide pipe to collect all the condensed solvent dripping from different positions and guide it into the annular collection tank of the mounting ring; the guide tube guides the steam flow in the tower; the rotating spray section sprays the solvent in the collection tank towards the center, expanding the droplet dispersion range, increasing the contact area between the droplets and the rising hot steam, and enhancing the secondary vaporization effect.

[0020] Preferably, a fixing frame is fixedly connected to the internal position of the mounting plate at the center of the mounting ring. A bottom input shaft is rotatably mounted inside the fixing frame. The bottom input shaft rotates through the bottom of the tower body and extends out of the bottom of the tower body. A bottom drive motor is fixedly mounted at the bottom of the tower body. The bottom drive motor can drive the input shaft to rotate. The spray section includes multiple circulation pipes. The multiple circulation pipes are twisted around the bottom input shaft as the twist center. The circulation pipes can be tilted towards the bottom input shaft. The upper end of the circulation pipe is sealed. Discharge holes are evenly opened near the top of the circulation pipe. The multiple circulation pipes are fixed together by a ring frame. The ring frame can be fixed by a connecting rod and the upper end of the bottom input shaft. During the rotation of the bottom input shaft, the circulation pipe can be driven to slide along the ring-shaped collection groove. The tilted circulation pipe can scoop up the solvent in the ring-shaped collection groove and discharge the solvent from the discharge hole for even distribution.

[0021] The effects achieved by the above components are as follows: the bottom drive motor drives the bottom input shaft to rotate, and through the ring frame, multiple circulation pipes slide around the annular collection tank. During the rotation, the inclined circulation pipes automatically scoop up the solvent in the tank, and the solvent is thrown out from the discharge hole, realizing pump-free rotary spraying of the cloth, simplifying the structure of the spraying pipeline, and making the solvent spraying distribution more uniform.

[0022] Preferably, a track ring is fixedly connected inside the mounting ring, a connecting shaft is fixedly connected to the surface of the bottom input shaft, a sleeve is rotatably mounted on the end of the connecting shaft, a fixed bevel gear is fixedly connected to the surface of the connecting shaft, a traveling bevel gear is fixedly connected to the end of the sleeve away from the bottom input shaft, the traveling bevel gear can mesh and travel on the track ring, a rotating shaft is fixedly connected to the surface of the sleeve near the fixed bevel gear, a rotating bevel gear is rotatably mounted on the surface of the rotating shaft, a circulating fan blade is fixedly connected to the upper end of the rotating bevel gear, during the rotation of the bottom input shaft, the connecting shaft can drive the connecting shaft to rotate around the central axis of the bottom input shaft, at this time the sleeve rotates, the rotating sleeve drives the circulating fan blade to flip, during the rotation of the connecting shaft, the circulating fan blade rotates around the bottom input shaft, during the rotation of the sleeve, the rotating bevel gear can travel on the surface of the fixed bevel gear to make the circulating fan blade rotate to generate airflow, wherein the rotating fan blade can also flip around the axial direction of the connecting shaft and then flip around the axial direction of the bottom input shaft to break the steam movement trajectory.

[0023] The effects achieved by the above components are as follows: relying on the power of the bottom input shaft, and using the pure mechanical transmission structure composed of the track ring, traveling bevel gear, fixed bevel gear, and rotating bevel gear, the circulating fan blades can simultaneously complete revolution, rotation, and attitude reversal, continuously disturbing the originally stable steam flow trajectory inside the tower, disrupting the steam laminar flow state, strengthening the disturbance contact between steam and falling droplets, and improving the gas-liquid heat and mass transfer efficiency without the need for an additional independent drive motor.

[0024] Preferably, a method for dehydrating and regenerating waste organic solvents with high water content, using the aforementioned dehydration and regeneration equipment for waste organic solvents with high water content, includes the following steps:

[0025] S1. The waste organic solvent with high water content to be treated is fed into the tower body through the feed pipe. The azeotrope at the bottom of the tower body is started. The azeotrope generates upward flowing hot steam. The hot steam is used to heat the waste organic solvent entering the tower body to achieve the vaporization and separation of the solvent.

[0026] S2. The mixed steam generated by heating flows upward through the heat insulation component and is introduced into the copper tube with a circulating heat exchange liquid that matches the boiling point of the low-boiling-point solvent. The heat exchange liquid is used to keep the mixed steam constant. The low-boiling-point steam continues to flow upward, while the high-boiling-point components condense and drip downward on the surfaces of the first and second guide fins when they are cooled.

[0027] S3. The top drive motor drives the top input shaft to rotate the guide fan blades, which disturbs and propels the low-boiling-point steam upward. The low-boiling-point steam is finally discharged from the low-boiling-point discharge pipe and sent to the subsequent condensation and recovery process.

[0028] S4. The rising mixed vapor condenses on the bottom surface of the collecting hood. The condensed liquid droplets flow along the inner wall of the collecting hood and drip into the annular collection tank of the mounting ring through the guiding needle and the guiding tube on the guiding hood. The collecting ring collects and guides the scattered and dripping solvent.

[0029] S5. The bottom drive motor drives the bottom input shaft to rotate, which drives the circulation pipe on the ring frame to slide along the ring-shaped collection tank. The circulation pipe scoops up the condensed solvent collected in the tank, and the solvent is sprayed out from the discharge hole of the circulation pipe, realizing the solvent rotation spraying onto the fabric. The sprayed and falling solvent and the rising hot steam come into full contact and vaporize again.

[0030] S6. The bottom input shaft rotates synchronously, driving the connecting shaft to revolve. The traveling bevel gear meshes with the track ring and drives the sleeve to rotate. Through the transmission of the fixed bevel gear and the rotating bevel gear, the circulating fan blades can simultaneously complete the revolution and rotation, constantly disrupting the steam movement trajectory inside the tower body and enhancing the gas-liquid two-phase heat exchange contact effect.

[0031] S7. Start the circulation pump of the circulation component to extract the high-boiling-point solution remaining at the bottom of the tower and transport it to the upper part of the tower for spraying. The falling droplets and rising hot gas collide and exchange heat to further recover the vaporizable solvent components remaining in the solution.

[0032] S8. After the entire batch of dehydration and regeneration treatment is completed, the high-boiling-point residue remaining at the bottom of the tower is discharged outward through the high-boiling-point discharge pipe, thus completing the entire dehydration and regeneration operation of the high-moisture-content waste organic solvent.

[0033] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0034] 1. In this invention, the heat exchange fluid is driven to circulate in the copper tube by an external heating system, and the surface temperature of the heat dissipation fins on both sides is precisely controlled. This allows for precise constant-temperature condensation of the rising mixed steam. High-boiling-point components liquefy upon cooling and drip down along the fins, while low-boiling-point steam that meets the boiling point requirements flows steadily upward. This effectively reduces the escape of high-boiling-point solvents with the top steam, improving separation accuracy and the purity of the recovered solvent.

[0035] 2. In this invention, the cloth structure with multiple inclined circulating pipes rotating to scoop and spray material can be driven by the power of the bottom input shaft to make circular motion along the annular collection tank. The inclined pipes automatically scoop up the solvent in the tank, and the solvent is thrown outward from the discharge hole under the action of centrifugal force to form a uniform liquid curtain.

[0036] 3. In this invention, the circulating fan blades simultaneously complete revolution around the center, self-rotation and attitude flipping through the linkage transmission of the track ring, traveling bevel gear, fixed bevel gear and rotating bevel gear, continuously breaking the laminar flow state of the steam in the tower, enhancing the turbulence of the steam flow field, promoting full mixing and contact of the gas and liquid phases, and effectively improving the heat and mass transfer efficiency. Attached Figure Description

[0037] Figure 1 This invention presents a three-dimensional structural schematic diagram of a dehydration and regeneration treatment device and method for high-moisture-content waste organic solvents.

[0038] Figure 2 This is an internal schematic diagram of a dehydration and regeneration treatment device and method for high-moisture-content waste organic solvents proposed in this invention;

[0039] Figure 3 This is a partial schematic diagram of the steam cloth distribution unit in the dehydration and regeneration treatment equipment and method for high water content waste organic solvents proposed in this invention.

[0040] Figure 4 This invention proposes a dehydration and regeneration treatment device and method for waste organic solvents with high water content. Figure 3 Partial schematic diagram;

[0041] Figure 5 This invention provides a partial schematic diagram of the circulation unit in a dehydration and regeneration treatment device and method for high-moisture-content waste organic solvents.

[0042] Figure 6 This invention provides an internal schematic diagram of the mounting ring in a dehydration and regeneration treatment device and method for high-moisture-content waste organic solvents.

[0043] Figure 7 This invention proposes a dehydration and regeneration treatment device and method for waste organic solvents with high water content. Figure 6 A diagram of the back of the building;

[0044] Figure 8 This invention proposes a dehydration and regeneration treatment device and method for waste organic solvents with high water content. Figure 5 Partial schematic diagram;

[0045] Figure 9 A partial schematic diagram of the copper pipe in the dehydration and regeneration treatment equipment and method for high water content waste organic solvents proposed in this invention;

[0046] Figure 10 This invention proposes a dehydration and regeneration treatment device and method for waste organic solvents with high water content. Figure 8 Enlarged view of point A.

[0047] Legend: 1. Tower body; 2. Support frame; 3. Low boiling point discharge pipe; 4. High boiling point discharge pipe; 5. Circulation assembly; 6. Feed pipe; 7. Steam distribution unit; 71. Internal support frame; 72. Top input shaft; 73. Guide fan blade; 74. Collecting hood; 75. Drain needle; 76. Guide hood; 77. Drain pipe; 8. Circulation unit; 81. Mounting ring; 82. Bottom input shaft; 83. Assembly plate; 84. Guide cylinder; 85. Collecting ring; 86. Circulation pipe; 87. Discharge hole; 88. Ring frame; 89. Fixing frame; 810. Coupling shaft; 811. Fixed bevel gear; 812. Sleeve; 813. Traveling bevel gear; 814. Rotating shaft; 815. Rotating bevel gear; 816. Circulation fan blade; 817. Track ring; 9. First guide fin; 10. Copper pipe; 11. Second guide fin. Detailed Implementation

[0048] Example 1, such as Figure 1-10As shown, a dehydration and regeneration treatment device and method for waste organic solvents with high water content is disclosed. The main treatment container is a tower body 1. The tower body 1 is vertically fixed on the ground by a support 2 at the bottom. A high boiling point discharge pipe 4 is connected to the bottom of the tower body 1. A low boiling point discharge pipe 3 is installed on the side wall of the tower body 1 near the top. A feed pipe 6 is installed at the center of the top of the tower body 1. An azeotrope is installed on the side wall of the tower body 1 near the bottom. A steam distribution unit 7 and a circulation unit 8 are arranged vertically inside the tower body 1. A heat preservation component is installed inside the middle cavity of the tower body 1. A circulation component 5 is installed on the outer wall of the tower body 1. The insulation component includes a first guide fin 9 and a second guide fin 11 arranged vertically opposite each other. Multiple inclined heat dissipation fins are evenly arranged inside the first guide fin 9 and the second guide fin 11, with the heat dissipation fins on both sides symmetrically distributed horizontally. A copper tube 10 is sandwiched between the first guide fin 9 and the second guide fin 11, and the copper tube 10 is arranged in a reciprocating bending pattern between the two guide fins. Both ends of the copper tube 10 extend through the side wall of the tower body 1 and are connected to an external constant-temperature heating system, which can drive the heat exchange fluid to circulate inside the copper tube 10, thus maintaining a constant temperature for the rising mixed steam inside the tower body 1. The circulation component 5 outside the tower body 1 includes a delivery pipe and a circulation pump. The bottom end of the delivery pipe is connected to the side wall of the tower body 1 near the bottom, and the top end of the delivery pipe is connected to the side wall of the tower body 1 near the top. The circulation pump is installed in series on the middle section of the delivery pipe, which can extract the high-boiling-point solution accumulated at the bottom of the tower body 1 and transport it to the upper part of the tower body 1 for spraying, so that the falling droplets and the rising hot steam form a counter-current contact. The steam distribution unit 7 includes an internal support frame 71. The outer ring of the internal support frame 71 is fixedly connected to the inner wall of the tower body 1. The inner ring of the internal support frame 71 is fixedly installed with a collecting cover 74. The collecting cover 74 is a circular cover structure with an upward arc in the middle and the opening is arranged downward. Multiple guide needles 75 are evenly installed on the bottom edge of the collecting cover 74. A top input shaft 72 is rotatably inserted at the upper center of the tower body 1. The bottom end of the top input shaft 72 extends downward and passes through the center of the collecting cover 74. The bottom end of the top input shaft 72 is fixedly connected to a guide fan blade 73. A top drive motor is installed on the upper surface of the tower body 1. The output shaft of the top drive motor is connected to the top input shaft 72, which can drive the top input shaft 72 to drive the guide fan blade 73 to rotate. A guide cover 76 is set at the lower center of the collecting cover 74. The guide cover 76 has a cone-shaped structure with the tip pointing downward. The bottom of the guide cover 76 is connected to a guide pipe 77. The bottom end of the guide pipe 77 extends downward to the inside of the annular collection groove of the circulation unit 8.The circulation unit 8 includes a mounting ring 81. The outer ring of the mounting ring 81 is fixedly connected to the inner wall of the tower body 1. An annular collection groove is formed on the upper end face of the mounting ring 81. A collecting ring 85 is fixedly installed on the upper edge of the mounting ring 81. The inner ring of the collecting ring 85 is inclined downward towards the center, which can guide the dripping solvent into the annular collection groove. An assembly plate 83 is set at the center of the mounting ring 81. A fixing frame 89 is fixedly connected inside the assembly plate 83. A bottom input shaft 82 is rotatably installed at the center of the fixing frame 89. The bottom end of the bottom input shaft 82 extends downward through the bottom of the tower body 1. A bottom drive motor is installed at the bottom of the tower body 1. The output of the bottom drive motor... The shaft is connected to the bottom input shaft 82 for transmission. The upper end of the bottom input shaft 82 is fixedly connected to the ring frame 88 through a connecting rod. Multiple circulation pipes 86 are fixedly installed on the ring frame 88. The multiple circulation pipes 86 are arranged radially and twisted around the bottom input shaft 82. The circulation pipes 86 are inclined towards the bottom input shaft 82. The upper end of the circulation pipe 86 is sealed. Multiple discharge holes 87 are evenly opened on the pipe wall near the upper end of the circulation pipe 86. The lower end of the circulation pipe 86 extends into the interior of the annular collection tank. When the bottom input shaft 82 rotates, it can drive the circulation pipe 86 to slide along the circumference of the annular collection tank, scoop up the solvent in the tank and spray it outward from the discharge holes 87 to achieve rotating fabric distribution. The inner ring surface of the mounting ring 81 is fixedly connected to the track ring 817. The shaft of the bottom input shaft 82 is fixedly connected to the horizontally arranged connecting shaft 810. The outer end of the connecting shaft 810 is rotatably mounted with a sleeve 812. A fixed bevel gear 811 is fixedly mounted near the outer end of the shaft of the connecting shaft 810. The end of the sleeve 812 away from the bottom input shaft 82 is fixedly connected to a traveling bevel gear 813. The traveling bevel gear 813 meshes with the inner tooth surface of the track ring 817. The shaft of the sleeve 812 is fixedly connected near the fixed bevel gear 811 with a rotating shaft 814. The upper end of the rotating shaft 814 is rotatably mounted with a self-... The rotating bevel gear 815 meshes with the fixed bevel gear 811. The upper end face of the rotating bevel gear 815 is fixedly connected to the circulating fan blade 816. When the bottom input shaft 82 rotates, it can drive the connecting shaft 810 to revolve around the axis of the bottom input shaft 82. At the same time, the traveling bevel gear 813 rolls along the track ring 817 to drive the sleeve 812 to rotate. Through the meshing transmission between the fixed bevel gear 811 and the rotating bevel gear 815, the circulating fan blade 816 is driven to rotate synchronously, so that the circulating fan blade 816 completes both revolution and rotation at the same time, continuously disturbing the steam flow trajectory inside the tower body 1.

[0049] Working principle: The waste organic solvent to be treated is continuously fed into the tower body 1 through the feed pipe 6. The hot steam generated by the azeotrope at the bottom of the tower body 1 flows upward and comes into countercurrent contact with the falling waste organic solvent, heating it and causing the low-boiling-point components in the waste organic solvent to vaporize and form mixed steam that flows upward. When the mixed steam flows upward through the insulation component, the constant-temperature heat exchange liquid circulating inside the copper pipe 10 conducts the temperature to the first guide fin 9 and the second guide fin 11 on both sides, maintaining the surface temperature of the fins at the same temperature as the boiling point of the low-boiling-point solvent. The high-boiling-point components in the mixed steam condense into droplets upon contact with the cooler fin surface and drip downward, while the low-boiling-point steam remains in a gaseous state and continues to flow upward, achieving preliminary separation of components with different boiling points. The top drive motor drives the guide fan blades 73 to rotate continuously through the top input shaft 72, generating an upward airflow thrust to accelerate the upward flow of the low-boiling-point steam. Finally, the low-boiling-point steam is discharged from the tower body 1 through the low-boiling-point discharge pipe 3 and sent to the subsequent condensation system to complete the solvent recovery. During the ascent, the vapor in contact with the bottom surface of the collecting hood 74 condenses, and the condensed droplets flow along the arc-shaped inner wall of the collecting hood 74 towards the edge. They then collect into droplets through the bottom guide needle 75 and drip downwards. Droplets dripping from the edge flow along the inclined surface of the collecting ring 85 into the annular collection tank, while droplets dripping from the center fall into the guide hood 76 and then flow along the guide pipe 77 into the annular collection tank, achieving unified collection of the condensed solvent. The bottom drive motor drives the bottom input shaft 82 to rotate, which, through the connecting rod and the ring frame 88, drives multiple circulation pipes 86 to move in a circular motion along the annular collection tank. During this motion, the inclined circulation pipes 86 scoop up the solvent collected in the tank. Under centrifugal force, the solvent is thrown outwards from the discharge hole 87 at the upper end of the circulation pipe 86, forming a rotating spray curtain that falls downwards, fully contacting the upward-flowing hot steam for re-vaporization, thus improving the solvent vaporization and separation efficiency. While the bottom input shaft 82 rotates, it drives the connecting shaft 810 to revolve around the center. The traveling bevel gear 813 rolls along the inner tooth surface of the track ring 817, causing the sleeve 812 to rotate. Through the meshing transmission of the fixed bevel gear 811 and the rotating bevel gear 815, the circulating fan blade 816 completes its own rotation while revolving around the bottom input shaft 82, continuously agitating the steam flow field inside the tower body 1, breaking the stable laminar flow state, and enhancing the heat and mass transfer effect of the gas and liquid phases. The circulating pump of the circulating component 5 draws the high-boiling-point solution accumulated at the bottom of the tower body 1 through the conveying pipe to the upper part of the tower body 1 and sprays it out, so that the low-boiling-point components remaining in the solution are reheated and vaporized, improving the overall solvent recovery rate. After the entire batch of materials is processed, the high-boiling-point residue remaining at the bottom of the tower body 1 is discharged outward through the high-boiling-point discharge pipe 4, completing the entire dehydration and regeneration operation.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any other way. Any person skilled in the art may utilize the disclosed technical content to make changes or modifications to create equivalent embodiments applicable to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, still fall within the protection scope of the present invention. In the description of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood through specific circumstances.

Claims

1. A high water content waste organic solvent dewatering regeneration treatment apparatus comprising a tower body (1), characterized in that: The tower body (1) can be fixedly installed on the ground by means of the support (2), the bottom of the tower body (1) is communicatively installed with a high-boiling discharge pipe (4), the side of the tower body (1) is installed with a low-boiling discharge pipe (3) near the top, the top of the tower body (1) is installed with a feed pipe (6), the feed pipe (6) can input waste organic solvent into the inside of the tower body (1), and the side of the tower body (1) is provided with a azeotrope near the bottom, wherein the azeotrope can let the steam float upwards from the bottom of the tower body (1) to heat the waste organic solvent, wherein the low-boiling steam can be discharged along the low-boiling discharge pipe (3), and the high-boiling solvent can be discharged through the high-boiling discharge pipe (4), the inside of the tower body (1) is provided with a circulating unit (8) and a steam distribution unit (7), wherein the steam distribution unit (7) can spray and distribute the condensed steam again to heat and distill again.

2. The dewatering and regenerating apparatus for high-moisture-content waste organic solvent according to claim 1, characterized by: The inside of the tower body (1) is provided with a heat preservation assembly, wherein the inside of the heat preservation assembly flows with heat exchange liquid with a boiling point consistent with that of the low-boiling solvent, the heat exchange liquid can be used to keep the temperature of the steam constant, at this time, the low-boiling steam passing through the heat preservation assembly continues to rise, and the high-boiling steam condenses on the heat preservation assembly and drops downwards.

3. The dewatering and regenerating apparatus for high-moisture-content waste organic solvent according to claim 2, characterized by: The heat preservation assembly is clamped by a first flow guide fin plate (9) and a second flow guide fin plate (11), wherein the inside of the first flow guide fin plate (9) and the second flow guide fin plate (11) is uniformly provided with inclined heat dissipation fins, the heat dissipation fins in the inside of the first flow guide fin plate (9) and the second flow guide fin plate (11) are symmetrically distributed along the horizontal direction, a copper pipe (10) is clamped between the first flow guide fin plate (9) and the second flow guide fin plate (11), the copper pipe (10) is bently arranged between the first flow guide fin plate (9) and the second flow guide fin plate (11) and can extend out of the tower body (1) at both ends and be connected to a heating system, the heat exchange liquid flowing in the inside of the copper pipe (10) can be kept constant temperature by the heating system, and the heat exchange liquid is circulated in the copper pipe (10) to heat the steam in the inside of the tower body (1).

4. The dewatering and regenerating apparatus for high-moisture-content waste organic solvent according to Claim 1, characterized by: The side of the tower body (1) is installed with a circulating assembly (5), the circulating assembly (5) comprises a conveying pipe, the bottom end of the conveying pipe is communicatively installed at a position near the bottom of the side of the tower body (1), the other end of the conveying pipe is communicatively installed at a position near the top of the side of the tower body (1), both ends of the conveying pipe are communicated with the tower body (1), and a circulating pump is installed in the middle of the conveying pipe, the circulating pump can pump the high-boiling solution at the bottom of the tower body (1) to a position near the top of the inside of the tower body (1) to spray, the sprayed high-boiling solution drops downwards and collides with the rising hot gas to exchange heat to generate steam.

5. The dewatering and regenerating apparatus for high-moisture-content waste organic solvent according to claim 1, characterized by: The steam cloth unit (7) comprises an internal support frame (71) fixedly installed in the tower body (1), an internal support frame (71) is fixedly installed in the internal support frame (71), the collection cover (74) is a circular cover with a upward arc-shaped arch in the middle, the opening of the circular cover faces downward, the heated steam flows upward from the lower part of the tower body (1), the steam contacts the bottom of the collection cover (74) and condenses, the condensed beads of solvent can flow downward along the inner wall of the collection cover (74), the bottom end of the collection cover (74) is uniformly provided with a drainage needle (75), the condensed beads of solvent can flow downward along the drainage needle (75) and drop into the circulating unit (8), wherein the circulating unit (8) can spray the condensed solvent to contact the hot gas again.

6. The dewatering and regenerating apparatus for high-moisture-content waste organic solvent according to claim 5, characterized by: The upper end of the tower body (1) is rotatably inserted with a top input shaft (72), the bottom of the top input shaft (72) extends into the tower body (1), the bottom end of the top input shaft (72) is fixedly connected with a flow guide fan blade (73), the top input shaft (72) and the collection cover (74) are rotatably assembled, the upper end of the tower body (1) is provided with a top driving motor, the top driving motor can drive the top input shaft (72) to rotate to drive the flow guide fan blade (73) to rotate and assist the upward flowing of the rising steam to accelerate the upward flowing to discharge.

7. The dewatering and regenerating apparatus for high-moisture-content waste organic solvent according to claim 6, characterized by: The circulating unit (8) comprises a mounting ring (81) fixedly installed in the tower body (1), an annular collecting groove is formed in the upper end of the mounting ring (81), a spraying part is arranged in the annular collecting groove, the solvent dropped from the drainage needle (75) can fall into the annular collecting groove, wherein the spraying part can rotate around the central axis of the mounting ring (81) to spray the solvent in the annular collecting groove towards the middle part of the mounting ring (81), a collection ring (85) is arranged at the upper end of the mounting ring (81), the central part of the collection ring (85) is inclined downward, the solvent dropped from the drainage needle (75) can flow downward along the collection ring (85) to the annular collecting groove, a flow guide cylinder (84) is arranged at the upper end of the mounting ring (81) relative to the central part, the flow guide cylinder (84) can cooperate with the flow guide cover (76) to transport the steam towards the edge of the tower body (1), the tip of the flow guide cover (76) faces downward, wherein the solvent dropped from the central part of the collection cover (74) can fall into the central part of the flow guide cover (76) and flow along the bottom drainage pipe (77) of the flow guide cover (76) to the inside of the annular collecting groove.

8. The dewatering and regenerating apparatus for high-moisture-content waste organic solvent according to claim 7, characterized by: The mounting ring (81) is fixedly connected with a fixed frame (89) inside the center assembly disc (83), the fixed frame (89) is rotatably installed with a bottom input shaft (82), the bottom input shaft (82) rotates through and extends out of the bottom of the tower body (1), the bottom of the tower body (1) is fixedly installed with a bottom driving motor, the bottom driving motor can drive the input shaft to rotate, the spraying part includes a plurality of circulating pipes (86), the plurality of circulating pipes (86) are twisted around the bottom input shaft (82) as the twist center, the circulating pipes (86) can be inclined towards the direction of the bottom input shaft (82), the upper end of the circulating pipe (86) is sealed, a plurality of discharge holes (87) are uniformly arranged on the position close to the top of the circulating pipe (86), the plurality of circulating pipes (86) are fixed by means of a ring frame (88), the ring frame (88) can be fixed by means of a connecting rod and the upper end of the bottom input shaft (82), the bottom input shaft (82) can drive the circulating pipe (86) to slide along the ring-mounted collection groove during rotation, and the inclined circulating pipe (86) can shovel up the solvent in the ring-mounted collection groove to make the solvent uniformly distributed from the discharge holes (87).

9. The dewatering and regenerating apparatus for high-moisture-content waste organic solvent according to claim 8, characterized by: The inside of the mounting ring (81) is fixedly connected with a track ring (817), the surface of the bottom input shaft (82) is fixedly connected with a connecting shaft (810), the end of the connecting shaft (810) is rotatably installed with a sleeve (812), the surface of the connecting shaft (810) is fixedly connected with a fixed bevel gear (811), the end, away from the bottom input shaft (82), of the sleeve (812) is fixedly connected with a walking bevel gear (813), the walking bevel gear (813) can mesh and walk on the track ring (817), the surface of the sleeve (812), close to the fixed bevel gear (811), is fixedly connected with a rotating shaft (814), the surface of the rotating shaft (814) is rotatably installed with a self-rotating bevel gear (815), the upper end of the self-rotating bevel gear (815) is fixedly connected with a circulating fan blade (816), the bottom input shaft (82) can drive the connecting shaft (810) to rotate around the central shaft of the bottom input shaft (82) during rotation, at this time, the sleeve (812) rotates, the sleeve (812) drives the circulating fan blade (816) to flip during rotation, the circulating fan blade (816) rotates around the bottom input shaft (82) during rotation of the connecting shaft (810), and the sleeve (812) can drive the circulating fan blade (816) to rotate by means of the self-rotating bevel gear (815) walking on the surface of the fixed bevel gear (811) during rotation to generate air flow, wherein the circulating fan blade (816) rotates while flipping around the axial direction of the connecting shaft (810) and then flipping around the axial direction of the bottom input shaft (82) to break the steam movement track.

10. A method for dewatering and regenerating a high water content waste organic solvent, characterized by: The high-moisture-content waste organic solvent dewatering and regeneration treatment device of claim 9 comprises the following steps: S1, the high water content waste organic solvent to be treated is transported into the inside of the tower body (1) through the feeding pipe (6), the azeotrope at the bottom of the tower body (1) is started, the azeotrope generates upward flowing hot steam, the waste organic solvent entering the inside of the tower body (1) is heated by using the hot steam, and vaporization separation of the solvent is realized; S2, the mixed steam generated by heating flows upwards through the heat preservation assembly, the circulating heat exchange liquid matching the boiling point of the low boiling point solvent is introduced into the inside of the copper pipe (10), the heat exchange liquid performs constant temperature treatment on the mixed steam, the low boiling point steam continues to flow upwards, and the high boiling point components condense on the surfaces of the first flow guide fin disc (9) and the second flow guide fin disc (11) and drop downwards when being cooled; S3, the top driving motor drives the top input shaft (72) to rotate, the low boiling point steam upwardly moving is disturbed and boosted, and the low boiling point steam is finally discharged outward from the low boiling point discharge pipe (3) and is sent to a subsequent condensation recovery process; S4, the rising mixed steam condenses on the bottom surface of the collection cover (74), the liquid beads formed by condensation flow along the inner wall of the collection cover (74), drop to the annular collection groove inside the mounting ring (81) through the drainage pipe (77) on the drainage needle (75) and the flow guide cover (76), and the gathering ring (85) collects and guides the solvent scattered and dropped; S5, the bottom driving motor drives the bottom input shaft (82) to rotate, drives the circulating pipe (86) on the ring frame (88) to slide along the annular collection groove, the circulating pipe (86) shovels the condensed solvent collected in the groove, the solvent is sprayed out from the discharge hole (87) of the circulating pipe (86), the solvent is sprayed and distributed in rotation, and the sprayed solvent and the rising hot steam fully contact and vaporize again; S6, the bottom input shaft (82) rotates to synchronously drive the sun gear (810) to revolve, the walking bevel gear (813) meshes with the track ring (817) to drive the sleeve (812) to revolve, the circulating fan blade (816) is driven to revolve and revolve at the same time through the transmission of the fixed bevel gear (811) and the revolving bevel gear (815), the steam movement track inside the tower body (1) is continuously disturbed, and the gas-liquid two-phase heat exchange contact effect is strengthened; S7, the circulating pump of the circulating assembly (5) is started, the high boiling point solution remaining at the bottom of the tower body (1) is extracted and transported to the upper part of the tower body (1) for spraying, the falling liquid drops are exchanged with the rising hot gas, and the residual vaporizable solvent components in the solution are further recovered; S8, after the dehydration and regeneration treatment of the whole batch is completed, the high boiling point residue remaining at the bottom of the tower body (1) is discharged outward through the high boiling point discharge pipe (4), and the dehydration and regeneration operation of the whole high water content waste organic solvent is completed.

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