Light stabilizer post-treatment rectifier column structure

Abstract

The application discloses a light stabilizer post-treatment rectifying tower structure and relates to the technical field of rectifying towers.The light stabilizer post-treatment rectifying tower structure solves the problem of small contact area between liquid-phase materials in a dripping state and gas-phase materials and poor rectifying effect.The light stabilizer post-treatment rectifying tower structure comprises a rectifying tower body, a liquid-phase staggered conveying structure arranged at the top of the rectifying tower body, a gas-liquid distillation assembly arranged in the rectifying tower body and located at the bottom of the liquid-phase staggered conveying structure, a filler separation assembly arranged in the rectifying tower body and located at the bottom of the gas-liquid distillation assembly and a circulating pipeline communicated to the outside of the bottom of the rectifying tower body.In the application, the coverage area and the size of the area of the liquid-phase materials in the expanded spraying and conveying are enlarged when the liquid-phase materials are conveyed into the rectifying tower body, so that the contact area of the floating gas-phase materials and the dripping liquid-phase materials is larger when the two materials contact each other, the speed and the efficiency of the light components in the liquid phase transferred to the gas phase are faster, and the rectifying effect and the efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of distillation column technology, specifically to the structure of a distillation column for post-treatment of light stabilizers. Background Technology

[0002] Light stabilizers are additives used in polymer products (such as plastics, rubber, coatings, and synthetic fibers). They can shield or absorb ultraviolet energy and have functions such as quenching singlet oxygen and decomposing hydrogen peroxide into inactive substances. In the preparation of light stabilizers, post-treatment operations such as distillation are required after the pre-treatment process to effectively remove impurities from the light stabilizer (mixture).

[0003] A distillation column is a tower-type gas-liquid contact device used for distillation. It utilizes the property that the components in a mixture have different volatility, i.e., different vapor pressures at the same temperature, to transfer lighter components (low-boiling substances) from the liquid phase to the gas phase, while heavier components (high-boiling substances) from the gas phase are transferred to the liquid phase, thereby achieving separation.

[0004] However, this distillation column structure has the following drawbacks in practical use: 1. In existing distillation column structures, when distilling chemical products (such as light stabilizers), the liquid phase material in a liquid mixture state moves downward from the top of the column, while the vapor phase undergoing distillation floats upward from the bottom. The two phases contact each other inside the column, achieving component separation (distillation). However, for light stabilizers in a liquid mixture state, the liquid molecules have relatively large particle sizes. Traditionally, the light stabilizer in liquid mixture state is transported to the distillation column through pipelines. When the light stabilizer in liquid mixture state falls into the column for distillation, its dripping state results in a small contact area with the vapor phase material, leading to poor distillation efficiency. 2. In existing distillation column structures, when distilling a liquid mixture of liquid material (light stabilizer) and gaseous material (vapor), the liquid material (light stabilizer) falls rapidly due to its particle weight. This results in a short contact time between the liquid material (light stabilizer) and the gaseous material (vapor) within the distillation column, leading to low transfer efficiency of the lighter components (low-boiling-point substances) within the liquid material (light stabilizer). Summary of the Invention

[0005] The purpose of this invention is to provide a structure for a light stabilizer post-treatment distillation column to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: This invention provides a post-treatment distillation column structure for light stabilizers, comprising a distillation column body; a liquid phase cross-conveying structure disposed at the top of the distillation column body; a gas-liquid distillation assembly disposed inside the distillation column body and located at the bottom of the liquid phase cross-conveying structure; a packed separation assembly disposed inside the distillation column body and located at the bottom of the gas-liquid distillation assembly; and a circulation pipe connected to the outside of the bottom of the distillation column body. The liquid phase cross-conveying structure includes: a suspended conveying assembly installed at the top of the distillation column; a liquid phase impact assembly installed inside the suspended conveying assembly; an intermediate gear installed outside the liquid phase impact assembly and rotatably connected inside the suspended conveying assembly; a transmission gear meshing with the outside of the intermediate gear; a side gear meshing with the transmission gear and rotatably connected inside the suspended conveying assembly; and a reciprocating extrusion assembly connected to the side gear and installed inside the suspended conveying assembly.

[0007] In a preferred embodiment of the present invention, the distillation column consists of an upper column, a middle distillation column, and a lower column, and the upper column, distillation column, and lower column are all connected by screws. The upper tower is equipped with a suspended conveying assembly, and the interior of the distillation tower is provided with a gas-liquid distillation assembly and a packing separation assembly from top to bottom. A circulation pipe is connected to one side of the lower tower and the circulation pipe is connected to the distillation tower.

[0008] As a preferred embodiment of the present invention, a liquid phase channel is connected to the center of the bottom of the lower tower body, and a gas phase channel is connected to one side of the lower tower body, with the gas phase channel located on the side away from the circulation pipeline.

[0009] As a preferred embodiment of the present invention, the suspended conveying assembly includes: a liquid phase baffle plate assembled inside the upper tower body; a liquid phase hole opened at an eccentric position inside the liquid phase baffle plate; a spray pipe assembled at the center inside the liquid phase baffle plate; a liquid valve disposed on one side of the bottom of the spray pipe and located at the bottom of the liquid phase baffle plate; and a liquid phase conduit connected to the liquid valve and extending to the outside of the upper tower body.

[0010] In a preferred embodiment of the present invention, the top of the injection pipe is provided with a plurality of upper injection holes, and the outer side of the injection pipe is provided with a plurality of side injection holes located at the bottom of the upper injection holes. The spray pipe has a conical baffle at its inner top, an upper spray hole at the top of the conical baffle, a side spray hole at the outer side of the conical baffle, and a liquid phase impact assembly and a reciprocating extrusion assembly inside the spray pipe.

[0011] As a preferred embodiment of the present invention, the liquid phase impact assembly includes: a movable blade disposed on the side of the liquid valve and rotatably connected to the center of the inside of the injection pipe; a central connecting rod mounted on the top of the movable blade; and a stable bracket mounted inside the injection pipe and rotatably connected to the central connecting rod on its inner side. The central connecting rod has an outer side fitted with a central gear that is rotatably connected to the top of the stabilizing bracket. The top of the stabilizing bracket is rotatably connected with a transmission gear and a side gear.

[0012] As a preferred embodiment of the present invention, the reciprocating extrusion assembly includes: a side connecting rod connected to the top of the side gear; an injection cylinder disposed on the outer side of the top of the side connecting rod and installed at the bottom of the stabilizing bracket; a helical raceway disposed on the outer surface of the side connecting rod and located inside the injection cylinder; a reciprocating slide connected to the outer side of the helical raceway of the side connecting rod via ball bearings; an extrusion piston connected to the top of the reciprocating slide and movably disposed inside the injection cylinder; a flow divider connected to the top of the side connecting rod; and a positioning plate movably disposed on the top of the flow divider and installed on the top of the through hole inside the stabilizing bracket.

[0013] In a preferred embodiment of the present invention, a plurality of side flow ports are provided on the outer side of the top of the injection cylinder, the side flow ports being disposed on the side of the extrusion piston, and a side connecting rod being disposed through the interior of the extrusion piston. The diverter plate and the positioning plate are both provided with eccentric through holes at their internal eccentric positions, and both the diverter plate and the positioning plate are located on the outside of the conical baffle.

[0014] As a preferred embodiment of the present invention, the gas-liquid distillation assembly includes: a baffle plate installed at the top of the distillation column; a gas phase flotation channel disposed inside the baffle plate; a liquid phase annulus installed outside the gas phase flotation channel; a liquid phase through hole opened at the bottom of the liquid phase annulus; an upper sealing cover disposed at the top of the liquid phase annulus and above the gas phase flotation channel; and a threaded positioning rod for installing and fixing the upper sealing cover and being threadedly connected to the gas phase flotation channel. The flow baffles are provided in multiple ways, and the multiple flow baffles form a tortuous liquid phase flow path.

[0015] In a preferred embodiment of the present invention, the packing separation assembly includes: a packing assembly plate installed at the bottom of the distillation column; a plurality of separation holes formed inside the packing assembly plate; and a distillation packing unit disposed between two of the packing assembly plates. Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects: 1. In the structure of a light stabilizer post-treatment distillation column, when distilling liquid-phase materials (light stabilizers) to improve their quality, the liquid-phase materials (light stabilizers) can be expanded in terms of coverage area and size within the distillation column body by spraying and conveying them upwards and outwards. This ensures a larger contact area between the rising gaseous material (vapor) and the dripping liquid-phase material (light stabilizer), resulting in faster and more efficient transfer of lighter components (low-boiling substances) from the liquid phase to the gas phase. Furthermore, the outward spraying and conveying of liquid-phase materials (light stabilizers) is achieved through extrusion, allowing for greater speed and distance of transport. Furthermore, the driving force that propels the liquid material (light stabilizer) outward under pressure is the impact force of the liquid material (light stabilizer) being injected into the injection pipe. Compared to traditional driving methods (motors, etc.), this method is lower in cost and less affected by distillation temperature. 2. In the post-treatment distillation column structure for light stabilizers, when distilling the liquid-phase material (light stabilizer), the design of the flow trajectory of the liquid-phase material (light stabilizer) through bending and conveying maximizes the contact time between the liquid-phase material (light stabilizer) and the gaseous material (vapor), as well as the activity time of the liquid-phase material (light stabilizer) within the distillation column structure, thereby improving the effect and efficiency of distillation. Simultaneously, a portion of the liquid-phase material (light stabilizer) at the top of each baffle is always in contact with the rising gaseous material (vapor), facilitating continuous distillation of the liquid-phase material (light stabilizer). 3. In the post-treatment distillation column structure of light stabilizers, the design of the impurity separation cylinder packing inside the distillation packing unit can separate impurities from both the gaseous material undergoing distillation and the liquid material after distillation. This ensures lower impurity levels in both the gaseous and liquid materials, guaranteeing the quality of the light stabilizer after distillation. Simultaneously, the liquid material after distillation can be repeatedly introduced into the distillation packing unit through a circulation pipeline design, achieving multiple impurity separation processes and maximizing the quality of the liquid material (light stabilizer). 4. In the structure of the light stabilizer post-treatment distillation column, when performing multiple or single impurity separation operations on the liquid phase material (light stabilizer) (through the packing inside the distillation packing unit), the design of the upper protrusion inside the intermediate temporary partition and the first and second recesses with different depths inside the upper protrusion can divert the liquid phase material (light stabilizer), preventing the liquid phase material (light stabilizer) from entering the interior of the distillation packing unit for impurity separation all at once. This ensures that the impurities inside the liquid phase material (light stabilizer) have sufficient time to be adhered to by the packing inside the distillation packing unit, thereby improving the effect of impurity separation of the liquid phase material (light stabilizer). Attached Figure Description

[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0017] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the entire structure of the present invention; Figure 3 This is a schematic diagram of the overall orthographic section of the present invention; Figure 4 This is a cross-sectional structural schematic diagram of the connection between the distillation column body and the circulation pipeline of the present invention; Figure 5 This is a schematic diagram showing the cross-sectional view of the connection between the distillation tower body and the gas-liquid distillation assembly of the present invention; Figure 6 This is a schematic diagram of the cross-sectional view of the connection between the upper tower body and the liquid phase interleaving conveying structure of the present invention; Figure 7 This is a cross-sectional schematic diagram of the liquid phase interleaved transport structure of the present invention; Figure 8 This is a schematic diagram of the connection between the liquid phase impact component and the reciprocating extrusion component of the present invention; Figure 9 This is the present invention. Figure 8 Enlarged structural diagram of region A in the middle; Figure 10This is an exploded view of the reciprocating extrusion assembly of the present invention after cross-section; Figure 11 This is a schematic diagram of the gas-liquid distillation assembly of the present invention; Figure 12 This is the present invention. Figure 11 Enlarged structural diagram of region B in the middle; Figure 13 This is a schematic diagram of the structure of the intermediate temporary partition of the present invention; In the picture: 10. Distillation column body; 101. Upper column body; 102. Distillation column body; 103. Lower column body; 1031. Liquid phase channel; 1032. Gas phase channel; 20. Liquid phase interleaved conveying structure; 201. Suspended conveying assembly; 202. Liquid phase impact assembly; 203. Intermediate gear; 204. Transmission gear; 205. Side gear; 206. Reciprocating extrusion assembly; 2011, Liquid phase baffle; 2012, Liquid phase orifice; 2013, Injection pipeline; 20131, Upper injection port; 20132, Side injection port; 20133, Conical baffle; 2014, Liquid valve; 2015, Liquid phase conduit; 2021, Moving blades; 2022, Central connecting rod; 2023, Stabilizing support; 2061, Side connecting rod; 2062, Injector barrel; 20621, Side flow port; 2063, Spiral raceway; 2064, Reciprocating slide; 2065, Extrusion piston; 2066, Flow divider; 2067, Positioning plate; 20671, Eccentric through hole; 30. Gas-liquid distillation assembly; 301. Baffle plate; 302. Gas phase flotation channel; 303. Liquid phase annulus; 304. Liquid phase through hole; 305. Upper sealing cap; 306. Threaded positioning rod; 40. Packing separation assembly; 401. Packing assembly plate; 402. Separation hole; 403. Distillation packing unit; 50. Circulation pipeline; 60. Temporary partition in the middle; 601. Upper protrusion; 602. First recessed part; 603. Second recessed part. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] Example 1 Please see Figures 1-12 The light stabilizer post-treatment distillation column structure includes a distillation column body 10; a liquid phase cross-conveying structure 20 disposed at the top of the distillation column body 10; a gas-liquid distillation assembly 30 disposed inside the distillation column body 10 and located at the bottom of the liquid phase cross-conveying structure 20; a packed separation assembly 40 disposed inside the distillation column body 10 and located at the bottom of the gas-liquid distillation assembly 30; and a circulation pipe 50 connected to the outside of the bottom of the distillation column body 10. The liquid phase cross-conveying structure 20 includes a suspended conveying assembly installed at the top inside the distillation column body 10. 201; a liquid phase impact component 202 installed inside the suspended conveying assembly 201; an intermediate gear 203 installed outside the liquid phase impact component 202 and rotatably connected inside the suspended conveying assembly 201; a transmission gear 204 meshing with the outside of the intermediate gear 203; a side gear 205 meshing with the transmission gear 204 and rotatably connected inside the suspended conveying assembly 201; and a reciprocating extrusion component 206 connected to the side gear 205 and installed inside the suspended conveying assembly 201.

[0021] In this invention, the distillation column 10 consists of an upper column 101 at the top, a distillation column 102 in the middle, and a lower column 103 at the bottom. The upper column 101, the distillation column 102, and the lower column 103 are all connected by screws. The upper column 101 is equipped with a suspended conveying assembly 201. The distillation column 102 is provided with a gas-liquid distillation assembly 30 and a packing separation assembly 40 arranged sequentially from top to bottom. A circulation pipe 50 is connected to one side of the lower column 103 and is connected to the distillation column 102. A liquid phase channel 1031 is connected to the center of the bottom of the lower column 103, and a gas phase channel 1032 is connected to one side of the lower column 103. The gas phase channel 1032 is located away from the circulation pipe 50.

[0022] The working principle described above is as follows: When distilling the liquid material (light stabilizer), the impact force during the delivery of the liquid material (light stabilizer) drives the liquid impact component 202 to operate, causing the intermediate gear 203 connected to the liquid impact component 202 to rotate. This, in turn, causes multiple transmission gears 204 meshing with the intermediate gear 203 to rotate. As the transmission gears 204 rotate, the side gears 205 meshing with them rotate, driving the reciprocating extrusion component 206 connected to the side gears 205 to operate. This accelerates the injection of the liquid material to the top of the suspended delivery component 201 through piston extrusion. Combined with the upward spraying of the liquid material (light stabilizer) by the suspended delivery component 201, this achieves a more dispersed and larger coverage area for the transfer of the liquid material (light stabilizer), increasing the contact area between the liquid material (light stabilizer) and the gaseous material, thus ensuring the effectiveness and efficiency of the distillation of the liquid material (light stabilizer).

[0023] In this invention, by bending the liquid phase material (light stabilizer) inside the gas-liquid distillation assembly 30, the time during which the liquid phase material (light stabilizer) comes into contact with the gas phase material (vapor) and undergoes distillation can be maximized, thereby improving the distillation effect and efficiency.

[0024] In this invention, the design of the packing material inside the packing separation component 40 enables the separation of impurities from the gaseous material undergoing distillation and the liquid material after distillation, thereby ensuring the quality of both the gaseous and liquid materials.

[0025] In this invention, the circulation pipeline 50 is used to complete the circulation and transportation operation of the liquid phase material after distillation, and can perform the separation of impurities in the liquid phase material (light stabilizer) after distillation multiple times.

[0026] For details, please refer to the following: Figure 6 and Figure 7 The suspended conveying assembly 201 includes: a liquid phase baffle 2011 installed inside the upper tower body 101; a liquid phase hole 2012 opened at an eccentric position inside the liquid phase baffle 2011; a jet pipe 2013 installed at the center inside the liquid phase baffle 2011; a liquid valve 2014 disposed on one side of the bottom of the jet pipe 2013 and located at the bottom of the liquid phase baffle 2011; and a liquid phase conduit 2015 connected to the liquid valve 2014 and extending to the outside of the upper tower body 101.

[0027] In this design, the top of the injection pipe 2013 is provided with multiple upper injection holes 20131, and the outer side of the injection pipe 2013 is provided with multiple side injection holes 20132 located at the bottom of the upper injection holes 20131. The inner top of the injection pipe 2013 is provided with a conical baffle 20133, the top of the conical baffle 20133 is provided with the upper injection holes 20131, and the outer side of the conical baffle 20133 is provided with the side injection holes 20132. The inside of the injection pipe 2013 is provided with a liquid phase impact component 202 and a reciprocating extrusion component 206.

[0028] In the post-treatment distillation column structure of the light stabilizer of the present invention, when the liquid phase material (light stabilizer) enters the interior of the injection pipe 2013 through the liquid valve 2014 and the liquid phase conduit 2015, a portion of the liquid phase material (light stabilizer) enters the upper injection hole 20131 at the top through the conical baffle 20133, and the injection and delivery operation of the liquid phase material (light stabilizer) is realized through the upper injection hole 20131. Another portion of the liquid phase material (light stabilizer) is ejected from the interior of the side injection hole 20132 by the reciprocating extrusion assembly 206 under pressure, realizing the injection and delivery operation of the liquid phase material (light stabilizer). At this time, by guiding and delivering the liquid phase material (light stabilizer) with different injection directions and injection intensities, the contact area between the liquid phase material (light stabilizer) and the gas phase material can be increased.

[0029] For details, please refer to the following: Figure 7 and Figure 8 The liquid phase impact assembly 202 includes: a movable blade 2021 disposed on the side of the liquid valve 2014 and rotatably connected to the center of the inside of the injection pipe 2013; a central connecting rod 2022 installed on the top of the movable blade 2021; and a stabilizing bracket 2023 installed inside the injection pipe 2013 and rotatably connected to the inner side of the central connecting rod 2022. An intermediate gear 203 is mounted on the outer side of the central connecting rod 2022 and rotatably connected to the top of the stabilizing bracket 2023. A transmission gear 204 and a side gear 205 are rotatably connected to the top of the stabilizing bracket 2023.

[0030] In the light stabilizer post-treatment distillation column structure of the present invention, when the liquid material (light stabilizer) enters the interior of the injection pipe 2013 through the liquid valve 2014 and the liquid conduit 2015, its impact force will drive the movable blade 2021 to operate, and drive the central connecting rod 2022 connected to the movable blade 2021 to rotate. When the central connecting rod 2022 rotates, it will drive the intermediate gear 203 mounted on its outer side to rotate.

[0031] For details, please refer to the following: Figure 9 and Figure 10 The reciprocating extrusion assembly 206 includes: a side connecting rod 2061 connected to the top of the side gear 205; an injection cylinder 2062 disposed on the outer side of the top of the side connecting rod 2061 and mounted on the bottom of the stabilizing bracket 2023; a spiral raceway 2063 disposed on the outer surface of the side connecting rod 2061 and located inside the injection cylinder 2062; a reciprocating slide 2064 connected to the outer side of the spiral raceway 2063 of the side connecting rod 2061 by ball bearings; an extrusion piston 2065 connected to the top of the reciprocating slide 2064 and movably disposed inside the injection cylinder 2062; a flow divider 2066 connected to the top of the side connecting rod 2061; and a positioning plate 2067 movably disposed on the top of the flow divider 2066 and mounted on the top of the through hole inside the stabilizing bracket 2023.

[0032] In this design, multiple side flow ports 20621 are provided on the outer side of the top of the injection cylinder 2062. The side flow ports 20621 are located on the side of the extrusion piston 2065. A side connecting rod 2061 is provided through the inside of the extrusion piston 2065. An eccentric through hole 20671 is provided at the eccentric part of the inside of the flow divider 2066 and the positioning plate 2067. The flow divider 2066 and the positioning plate 2067 are both located on the outer side of the conical baffle 20133.

[0033] In the post-treatment distillation column structure of the light stabilizer of the present invention, when the side gear 205 rotates, the side connecting rod 2061 connected to its top rotates, and through the spiral raceway 2063 opened on its outer side, drives the outer side of the spiral raceway 2063 to move up and down through the ball bearing connected reciprocating slide 2064 (the side connecting rod 2061 and the spiral raceway 2063 constitute a lead screw structure). At this time, when the reciprocating slide 2064 moves up and down, it drives the extrusion piston 2065 connected to its top to move up and down, and reciprocates to extrude the liquid phase material (light stabilizer) on the top of the extrusion piston 2065, so that the liquid phase material (light stabilizer) can be injected into the space inside the side flow port 20621 through the eccentric through hole 20671 inside the flow divider plate 2066 and the positioning plate 2067, and injected into the outer side of the injection cylinder 2062 by pressurization, thereby expanding the range and area of ​​liquid phase material (light stabilizer) delivery.

[0034] For details, please refer to the following: Figure 11 and Figure 12 The gas-liquid distillation assembly 30 includes: a baffle plate 301 installed at the top of the distillation column body 102; a gas phase flotation channel 302 disposed inside the baffle plate 301; a liquid phase ring 303 installed outside the gas phase flotation channel 302; a liquid phase through hole 304 opened at the bottom of the liquid phase ring 303; an upper sealing cover 305 disposed at the top of the liquid phase ring 303 and above the gas phase flotation channel 302; and a threaded positioning rod 306 for installing and fixing the upper sealing cover 305 and threadedly connected to the gas phase flotation channel 302. The baffle plate 301 is provided in multiple ways, and the multiple baffle plates 301 form a bent liquid phase flow passage.

[0035] In the post-treatment distillation column structure of the present invention, when the liquid material (light stabilizer) flows to the top of the baffle 301, a portion of the liquid material (light stabilizer) is always positioned at the top of the baffle 301 due to the protrusion on one side of the top of the baffle 301. Meanwhile, the gaseous material enters the interior of the upper sealing cover 305 through the gas floating channel 302 and comes into contact with the liquid material (light stabilizer) temporarily stored at the bottom of the upper sealing cover 305, thus achieving distillation. As the liquid material (light stabilizer) increases in size, it passes through the through-hole on one side of the baffle 301 to the top of the next baffle 301, achieving continuous delivery of the liquid material (light stabilizer).

[0036] For details, please refer to the following: Figure 5 The packing separation assembly 40 includes: a packing assembly plate 401 installed at the bottom of the distillation column body 102; a plurality of separation holes 402 opened inside the packing assembly plate 401; and a distillation packing unit 403 disposed between two packing assembly plates 401.

[0037] In the light stabilizer post-treatment distillation column structure of the present invention, the packing material provided inside the distillation packing unit 403 can be used to separate impurities from the gas phase material undergoing distillation and the liquid phase material after the distillation operation.

[0038] Example 2 During use, it was found that when the liquid material circulates through the circulation pipe 50 for impurity separation, the liquid material (light stabilizer) has a certain weight and falls relatively quickly. When a large amount of liquid material (light stabilizer) enters the packing separation component 40, the compression from the previous layer of liquid material (light stabilizer) results in a shorter residence time for the next layer of liquid material (light stabilizer) inside the packing separation component 40, leading to poor impurity separation.

[0039] For specific reference Figure 13 A temporary intermediate partition 60 is provided in the middle of the distillation column body 102. The top of the temporary intermediate partition 60 is provided with multiple upper protrusions 601, and the interior of the upper protrusions 601 is hollow. A first recess 602 is provided on the left and right sides of the upper protrusion 601 located in the middle. A second recess 603 is provided on the side of the first recess 602 located in the middle of the upper protrusion 601, and the depth of the second recess 603 is greater than the depth of the first recess 602.

[0040] In the post-treatment distillation column structure of the light stabilizer of the present invention, when the liquid phase material (light stabilizer) inside the circulation pipe 50 enters the top of the intermediate temporary baffle 60, the design of the protrusion 601 on the top of the intermediate temporary baffle 60 and the first recess 602 and the second recess 603 of different depths can realize the layered flow operation of the liquid phase material (light stabilizer), reduce the probability that the liquid phase material (light stabilizer) for impurity separation operation enters the packing separation component 40 at one time, ensure that the liquid phase material (light stabilizer) can fully contact the packing phase inside the packing separation component 40, and the contact time between the two is longer, effectively improving the effect of impurity separation of the liquid phase material (light stabilizer).

[0041] Therefore, any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this invention, based on the technical solution and inventive concept of this invention, should be covered within the protection scope of this invention.

Claims

1. A distillation column structure for post-treatment of light stabilizers, characterized in that, include: Distillation column body (10); liquid phase cross-conveying structure (20) disposed at the top of the distillation column body (10); gas-liquid distillation assembly (30) disposed inside the distillation column body (10) and located at the bottom of the liquid phase cross-conveying structure (20); packing separation assembly (40) disposed inside the distillation column body (10) and located at the bottom of the gas-liquid distillation assembly (30); circulation pipe (50) connected to the outside of the bottom of the distillation column body (10). The liquid phase interleaved conveying structure (20) includes: a suspended conveying assembly (201) installed at the top inside the distillation column (10); a liquid phase impact assembly (202) installed inside the suspended conveying assembly (201); an intermediate gear (203) installed outside the liquid phase impact assembly (202) and rotatably connected inside the suspended conveying assembly (201); a transmission gear (204) meshing with the outside of the intermediate gear (203); a side gear (205) meshing with the transmission gear (204) and rotatably connected inside the suspended conveying assembly (201); and a reciprocating extrusion assembly (206) connected to the side gear (205) and installed inside the suspended conveying assembly (201). The distillation column (10) consists of an upper column (101) at the top, a distillation column (102) in the middle, and a lower column (103) at the bottom. The upper column (101), the distillation column (102), and the lower column (103) are all connected by screws. The upper column (101) is equipped with a suspended conveying assembly (201), and the distillation column (102) is equipped with a gas-liquid distillation assembly (30) and a packing separation assembly (40) arranged sequentially from top to bottom. A circulation pipe (50) is connected to one side of the lower column (103), and the circulation pipe (50) is connected to the distillation column (102). Wherein: the suspended conveying assembly (201) includes: a liquid phase baffle (2011) assembled inside the upper tower body (101); a liquid phase hole (2012) opened at an eccentric position inside the liquid phase baffle (2011); a jet pipe (2013) assembled at the center inside the liquid phase baffle (2011); a liquid valve (2014) disposed on one side of the bottom of the jet pipe (2013) and located at the bottom of the liquid phase baffle (2011); and a liquid phase conduit (2015) connected to the liquid valve (2014) and extending to the outside of the upper tower body (101). The top of the injection pipe (2013) is provided with multiple upper injection holes (20131), and the outside of the injection pipe (2013) is provided with multiple side injection holes (20132) located at the bottom of the upper injection holes (20131). The inner top of the injection pipe (2013) is provided with a conical baffle (20133), the top of the conical baffle (20133) is provided with an upper injection hole (20131), the outer side of the conical baffle (20133) is provided with a side injection hole (20132), and the interior of the injection pipe (2013) is provided with a liquid phase impact assembly (202) and a reciprocating extrusion assembly (206).

2. The light stabilizer post-treatment distillation column structure according to claim 1, characterized in that: The bottom center of the lower tower body (103) is connected to a liquid phase channel (1031), and one side of the lower tower body (103) is connected to a gas phase channel (1032). The gas phase channel (1032) is located on the side away from the circulation pipe (50).

3. The light stabilizer post-treatment distillation column structure according to claim 1, characterized in that: The liquid phase impact assembly (202) includes: a movable blade (2021) disposed on the side of the liquid valve (2014) and rotatably connected to the center of the inside of the injection pipe (2013); a central connecting rod (2022) installed on the top of the movable blade (2021); and a stable bracket (2023) installed inside the injection pipe (2013) and rotatably connected to the central connecting rod (2022) on its inner side. The central connecting rod (2022) is equipped with an intermediate gear (203) that is rotatably connected to the top of the stabilizing bracket (2023). The top of the stabilizing bracket (2023) is rotatably connected with a transmission gear (204) and a side gear (205).

4. The light stabilizer post-treatment distillation column structure according to claim 3, characterized in that: The reciprocating extrusion assembly (206) includes: a side connecting rod (2061) connected to the top of the side gear (205); an injection cylinder (2062) disposed on the outer side of the top of the side connecting rod (2061) and installed at the bottom of the stabilizing bracket (2023); a spiral raceway (2063) disposed on the outer surface of the side connecting rod (2061) and located inside the injection cylinder (2062); a reciprocating slide (2064) connected to the outer side of the spiral raceway (2063) of the side connecting rod (2061) by ball bearings; an extrusion piston (2065) connected to the top of the reciprocating slide (2064) and movably disposed inside the injection cylinder (2062); a flow divider plate (2066) connected to the top of the side connecting rod (2061); and a positioning plate (2067) movably disposed on the top of the flow divider plate (2066) and installed on the top of the through hole inside the stabilizing bracket (2023).

5. The light stabilizer post-treatment distillation column structure according to claim 4, characterized in that: The top of the injection cylinder (2062) has multiple side flow ports (20621) on the outer side. The side flow ports (20621) are located on the side of the extrusion piston (2065). A side connecting rod (2061) is provided through the inside of the extrusion piston (2065). The diverter plate (2066) and the positioning plate (2067) are both provided with eccentric through holes (20671) at their internal eccentric positions, and the diverter plate (2066) and the positioning plate (2067) are both located on the outside of the conical baffle (20133).

6. The light stabilizer post-treatment distillation column structure according to claim 1, characterized in that: The gas-liquid distillation assembly (30) includes: a baffle plate (301) installed at the top inside the distillation column body (102); a gas phase flotation channel (302) disposed inside the baffle plate (301); a liquid phase ring (303) installed outside the gas phase flotation channel (302); a liquid phase through hole (304) opened at the bottom of the liquid phase ring (303); an upper sealing cover (305) disposed at the top of the liquid phase ring (303) and located above the gas phase flotation channel (302); and a threaded positioning rod (306) for installing and fixing the upper sealing cover (305) and threadedly connected to the gas phase flotation channel (302). The baffle (301) is provided in multiple ways, and the multiple baffles (301) form a tortuous liquid flow passage.

7. The light stabilizer post-treatment distillation column structure according to claim 1, characterized in that: The packing separation assembly (40) includes: a packing assembly plate (401) installed at the bottom of the distillation column body (102); a plurality of separation holes (402) opened inside the packing assembly plate (401); and a distillation packing unit (403) disposed between two of the packing assembly plates (401).

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