A device for purifying ethylene glycol
By integrating a three-dimensional frame layout and a multi-layer platform design, combined with dual-drum stirring and molecular sieve/activated carbon deep purification, the problems of equipment dispersion and low integration in ethylene glycol purification units have been solved, achieving efficient purification, energy saving and consumption reduction, and improved product purity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGYE XINGBANG (TIANJIN) TECH CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-28
AI Technical Summary
Existing ethylene glycol purification units suffer from problems such as dispersed equipment layout, large footprint, long material conveying paths, high pipeline energy consumption, insufficient stirring uniformity, poor coupling between reaction units and distillation columns, low raw material conversion rate and product yield, and low integration.
The system adopts a three-dimensional frame integrated layout, combining dual-drum stirring pretreatment, box reactor and distillation column coupling, molecular sieve/activated carbon deep purification and material circulation design to achieve efficient purification and energy saving.
The compact layout saves floor space, shortens material transport paths, reduces pipeline energy consumption, improves raw material mixing uniformity, increases raw material conversion rate and product yield, enhances distillation and separation accuracy, and significantly improves the purity of ethylene glycol products.
Smart Images
Figure CN224558765U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of chemical separation and purification technology, and more specifically, it relates to an ethylene glycol purification device. Background Technology
[0002] In the field of chemical separation and purification technology, ethylene glycol, as a key organic solvent and chemical raw material, is widely used in the production of polyester fibers, antifreeze, and fine chemicals. Its purity directly affects the quality and performance of downstream products. Existing ethylene glycol purification equipment has several shortcomings in practical applications: the equipment layout is mostly planar and decentralized, with each processing unit independently set up, resulting in a large footprint and long material transport paths between different units, leading to high pipeline energy consumption; the raw material pretreatment stage often uses a single stirring device, resulting in insufficient stirring uniformity and easy occurrence of localized concentration or temperature unevenness, affecting subsequent purification effects; in the distillation purification unit, the coupling between the reaction device and the distillation column is poor, and semi-finished materials that do not meet purification requirements cannot be effectively recycled and are directly discharged, causing raw material waste and resulting in low raw material conversion rate and product yield; at the same time, the integration between units is low, operation monitoring and maintenance are inconvenient, and overall operating efficiency needs to be improved.
[0003] Therefore, this utility model provides an ethylene glycol purification device. Utility Model Content
[0004] In view of the above-mentioned problems existing in the prior art, the purpose of this utility model is to provide an ethylene glycol purification device, which achieves efficient purification, energy saving and consumption reduction and safe operation through three-dimensional frame integration, double drum stirring pretreatment, coupling of box reactor and distillation column, molecular sieve / activated carbon deep purification and material circulation design.
[0005] The objective of this utility model can be achieved through the following technical solutions: An ethylene glycol purification apparatus includes a three-dimensional support frame, a raw material pretreatment unit, a distillation purification unit, and a storage and refining unit, wherein the raw material pretreatment unit, the distillation purification unit, and the storage and refining unit are all mounted on the three-dimensional support frame. The three-dimensional support frame is a multi-layer frame platform; The raw material pretreatment unit includes a twin-drum mixing device and a raw material conveying tower, which is connected to the twin-drum mixing device. The distillation purification unit includes a vertical distillation column and a box-type reaction device. The box-type reaction device is equipped with a reaction chamber and a reactor. The reactor is located in the reaction chamber. The reaction chamber is equipped with a pretreatment inlet, a reflux inlet, a vaporization outlet, a reprocessing outlet, and a distillation outlet. The pretreatment inlet of the reaction chamber is connected to a double-drum stirring device. The reflux inlet of the reaction chamber is connected to the outlet of the vertical distillation column. The vaporization outlet of the reaction chamber is connected to the inlet of the vertical distillation column. The reprocessing outlet of the reaction chamber is connected to the raw material conveying tower. The distillation outlet of the reaction chamber is connected to the storage and purification unit.
[0006] As a further preferred technical solution of this utility model, the material storage and refining unit is fixed in the middle layer of the multi-layer frame platform, and the material storage and refining unit is arranged below the double drum stirring device. The material storage and refining unit includes a storage tank and a refining tank. The storage tank and the refining tank are connected. The inlet of the storage tank is connected to the distillation outlet of the reaction chamber. An adsorption filter is installed inside the refining tank. The bottom of the material storage and refining unit has a product outlet, which is connected to the refining tank.
[0007] As a further preferred technical solution of this utility model, the adsorption filter of the refining box includes a molecular sieve layer and an activated carbon fiber layer arranged from top to bottom, wherein the pore size of the molecular sieve layer is 3-5 Å.
[0008] As a further preferred technical solution of this utility model, the bottom of the raw material conveying tower is provided with a raw material inlet for conveying raw materials and a semi-finished product inlet for conveying semi-finished products for further pretreatment. The semi-finished product inlet of the raw material conveying tower is connected to the reprocessing outlet of the reaction chamber. The top of the raw material conveying tower is provided with a raw material outlet. A material distribution funnel is provided at the raw material outlet. The material distribution funnel is connected to the double drum stirring device. The dual-drum stirring device includes two cylindrical drums arranged side by side. The inner walls of the cylindrical drums are evenly distributed with axial fan blades. One end of the cylindrical drum is provided with a feed inlet, and the other end of the cylindrical drum is provided with a discharge outlet. The feed inlet of the cylindrical drum is connected to the distribution funnel of the raw material conveying tower, and the discharge outlet of the cylindrical drum is connected to the pretreatment inlet of the reaction chamber.
[0009] As a further preferred technical solution of this utility model, the axial fan blades of the cylindrical roller are spirally distributed at 120°, the height of the fan blades is 1 / 5 to 1 / 3 of the roller diameter, the roller axis of the cylindrical roller forms an angle of 15° to 30° with the horizontal plane, and the cylindrical roller is fixed on the multi-layer frame platform by a support frame.
[0010] As a further preferred technical solution of this utility model, the top of the vertical distillation column is connected to a funnel-shaped condenser, the bottom of the vertical distillation column is provided with a condensation inlet, the funnel-shaped condenser is provided with a condensation outlet, the condensation outlet of the funnel-shaped condenser of the vertical distillation column is connected to the reflux inlet of the reaction chamber, and the condensation inlet of the vertical distillation column is connected to the vaporization outlet of the reaction chamber.
[0011] As a further preferred technical solution of this utility model, the funnel-shaped condenser is a double-layer conical structure, the apex angle of the double-layer conical structure is 70° to 85°, and the base angle of the double-layer conical structure is 100° to 120°.
[0012] As a further preferred technical solution of this utility model, the three-dimensional support frame is provided with three-layer platforms, the raw material conveying tower is located at the center of the three-dimensional support frame, the double-drum stirring device is fixed on the top layer of the three-dimensional support frame and is located on one side of the raw material conveying tower, the storage and refining unit is located on the middle layer of the three-dimensional support frame and is located below the double-drum stirring device, the reaction chamber is fixed on the middle layer of the three-dimensional support frame and is located on the other side of the raw material conveying tower, and the vertical distillation column is symmetrically arranged on both sides of the reaction chamber.
[0013] As a further preferred technical solution of this utility model, it also includes a pipeline system, which includes a high-temperature resistant pipeline for transporting high-temperature media and a steam outlet pipe. The high-temperature resistant pipeline connects the raw material transport tower, the vertical distillation tower, the reaction chamber, and the storage and refining unit. The steam outlet pipe is located at the vaporization outlet of the reaction chamber and extends to the bottom of the vertical distillation tower.
[0014] As a further preferred technical solution of this utility model, it also includes an electrical control system, which is centrally arranged in an independent power distribution cabinet. The independent power distribution cabinet is located in the reaction chamber. The cabinet of the independent power distribution cabinet is provided with a zoned power supply interface. The electrical control system is connected to the raw material pretreatment unit, the distillation and purification unit and the storage and refining unit through the zoned power supply interface.
[0015] As described above, the ethylene glycol purification apparatus provided by this utility model has the following beneficial effects: 1. This utility model utilizes the aforementioned ethylene glycol purification device. Compared with existing technologies, its structure integrates the raw material pretreatment unit, distillation purification unit, and storage refining unit through a multi-layered frame platform. The raw material conveying tower is located at the center of the frame, the double-drum stirring device is on the top layer, the storage refining unit is located in the middle layer and below the double-drum stirring device, and vertical distillation towers are symmetrically distributed on both sides of the reaction chamber. This compact and layered layout not only significantly saves floor space but also shortens the material conveying path and reduces pipeline energy consumption. Furthermore, the clear location and distinct layers of each unit facilitate equipment installation, maintenance, and operation monitoring, thereby improving overall operating efficiency.
[0016] 2. This utility model utilizes the aforementioned ethylene glycol purification device. Compared with existing technologies, due to its structure, the raw material pretreatment unit employs a double-drum stirring device. The inner walls of the two cylindrical drums are equipped with axially distributed blades arranged in a 120° spiral pattern. The height of the blades is 1 / 5 to 1 / 3 of the drum diameter, and the drum axis forms an angle of 15° to 30° with the horizontal plane. This design, through the shearing and pushing action of the spiral blades combined with the inclination angle, achieves continuous tumbling of the material from the inlet to the outlet, significantly enhancing the uniformity of raw material mixing and avoiding localized uneven concentration or temperature. Simultaneously, the parallel processing of the double drums increases the pretreatment throughput, ensuring that the raw material reaches an ideal homogenized state before entering the distillation purification unit, laying a solid foundation for subsequent distillation purification.
[0017] 3. This utility model utilizes the aforementioned ethylene glycol purification device. Compared with existing technologies, due to its structure, the reaction chamber of the box-type reaction device forms a closed loop with the double-drum stirring device, vertical distillation column, raw material conveying column, and storage and refining unit through a pretreatment inlet, reflux inlet, vaporization outlet, reprocessing outlet, and distillation outlet, respectively. The pretreated raw material enters the reaction chamber for vaporization. After separation by the vertical distillation column, the substandard semi-finished product returns to the raw material conveying column through the reprocessing outlet and re-enters the double-drum stirring device for secondary pretreatment. This material circulation mechanism allows for repeated processing of incompletely purified semi-finished products, effectively improving raw material conversion rate and product yield, reducing material waste. Simultaneously, the coupling of the distillation column and the reaction chamber achieves efficient synergy between vaporization, condensation, and reflux, improving the accuracy of distillation separation.
[0018] 4. This utility model utilizes the aforementioned ethylene glycol purification device. Compared with existing technologies, due to its structure, the purification tank of the storage and refining unit is equipped with an adsorption filter, consisting of a molecular sieve layer with a pore size of 3-5 Å and an activated carbon fiber layer from top to bottom. The molecular sieve layer can specifically adsorb small molecule impurities in the raw material, such as water and methanol, while the activated carbon fiber layer further adsorbs residual organic matter, pigments, and other large molecule impurities. The two layers work together to achieve dual deep purification. This design effectively reduces the impurity content in the product, significantly improves the purity of the ethylene glycol product, and meets the application requirements of high-purity chemical raw materials.
[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is one of the structural schematic diagrams of an ethylene glycol purification device according to this utility model application; Figure 2 This is the second schematic diagram of an ethylene glycol purification device according to this utility model application; Figure 3 for Figure 2 Enlarged schematic diagram of point I in the middle; Figure 4 for Figure 2 Enlarged schematic diagram at point II; Figure 5 This is a cross-sectional view of the storage and refining unit of an ethylene glycol purification apparatus according to this utility model application.
[0022] Summary of figure labels and their descriptions: 100. Three-dimensional support frame; 200. Raw material pretreatment unit; 210. Double drum stirring device; 211. Cylindrical drum; 220. Raw material conveying tower; 221. Distributing funnel; 300. Distillation and purification unit; 310. Vertical distillation column; 311. Funnel-shaped condenser; 320. Box-type reaction device; 330. Reaction chamber; 331. Pretreatment inlet; 332. Reflux inlet; 333. Vaporization outlet; 334. Reprocessing outlet; 335. Distillation outlet; 340. Reactor; 400. Storage and refining unit; 410. Storage tank; 420. Refining tank; 430. Adsorption filter; 431. Molecular sieve layer; 432. Activated carbon fiber layer. Detailed Implementation
[0023] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.
[0024] It should be noted that the structures, proportions, and sizes depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention. Specific structures can be described with reference to the accompanying drawings of the patent application.
[0025] This utility model provides an ethylene glycol purification device. Please refer to [link / reference]. Figures 1 to 5 As shown, it includes a three-dimensional support frame 100, a raw material pretreatment unit 200, a distillation and purification unit 300, and a storage and refining unit 400. The raw material pretreatment unit 200, the distillation and purification unit 300, and the storage and refining unit 400 are all mounted on the three-dimensional support frame 100. The three-dimensional support frame 100 is a multi-layer frame platform; The raw material pretreatment unit 200 includes a double drum mixing device 210 and a raw material conveying tower 220, with the raw material conveying tower 220 connected to the double drum mixing device 210; The distillation and purification unit 300 includes a vertical distillation column 310 and a box-type reaction device 320. The box-type reaction device 320 is provided with a reaction chamber 330 and a reactor 340. The reactor 340 is located inside the reaction chamber 330. The reaction chamber 330 is provided with a pretreatment inlet 331, a reflux inlet 332, a vaporization outlet 333, a reprocessing outlet 334, and a distillation outlet 335. The pretreatment inlet 331 of the reaction chamber 330 is connected to the double-drum stirring device 210. The reflux inlet 332 of the reaction chamber 330 is connected to the outlet of the vertical distillation column 310. The vaporization outlet 333 of the reaction chamber 330 is connected to the inlet of the vertical distillation column 310. The reprocessing outlet 334 of the reaction chamber 330 is connected to the raw material conveying tower 220. The distillation outlet 335 of the reaction chamber 330 is connected to the storage and purification unit 400.
[0026] It should be noted that this application integrates the raw material pretreatment unit 200, the distillation and purification unit 300, and the storage and refining unit 400 into a compact system through the multi-layer platform integrated layout of the three-dimensional support frame 100, which greatly saves the floor space, shortens the material conveying path, and reduces pipeline energy consumption. The box-type reaction device 320 forms a closed-loop material circulation through the pretreatment inlet 331, reflux inlet 332, vaporization outlet 333, reprocessing outlet 334, and distillation outlet 335, so that the substandard semi-finished products can be returned to the raw material conveying tower 220 for secondary processing, effectively improving the raw material conversion rate and product yield. The collaborative work of each unit achieves efficient purification, laying the foundation for subsequent deep purification.
[0027] The material storage and refining unit 400 is fixed to the middle layer of the multi-layer frame platform, and the material storage and refining unit 400 is located below the double drum stirring device 210. Combination Figure 5 As shown, the storage and refining unit 400 includes a storage tank 410 and a refining tank 420. The storage tank 410 is connected to the refining tank 420. The inlet of the storage tank 410 is connected to the distillation outlet 335 of the reaction chamber 330. An adsorption filter 430 is provided inside the refining tank 420. The bottom of the storage and refining unit 400 has a product outlet, which is connected to the refining tank 420. The storage and refining unit 400 is fixed in the middle layer of the multi-layer frame platform and located below the double drum agitator 210. The three-dimensional spatial layout further optimizes the compactness of the equipment and shortens the material conveying distance from the distillation outlet 335 to the storage tank 410. The connection design between the storage tank 410 and the refining tank 420 realizes the continuous connection between orderly temporary storage and deep processing of materials. The adsorption filter 430 in the refining tank 420 can adsorb impurities in the distilled material. The bottom product outlet facilitates the centralized collection of purified products, improving the overall production continuity and product purity.
[0028] Combination Figure 5 As shown, the adsorption filter 430 of the refining box 420 includes a molecular sieve layer 431 and an activated carbon fiber layer 432 arranged from top to bottom, wherein the pore size of the molecular sieve layer 431 is 3-5 Å. The purification box 420 adsorption filter 430 adopts a top-down combination structure of molecular sieve layer 431 and activated carbon fiber layer 432, forming a dual deep purification mechanism: molecular sieve layer 431 can specifically adsorb small molecule impurities, such as water and methanol, while activated carbon fiber layer 432 further adsorbs large molecule impurities such as residual organic matter and pigments. The synergistic effect of the two significantly reduces the impurity content of the product, greatly improves the purity of ethylene glycol products, and meets the application requirements of high-purity chemical raw materials.
[0029] Combination Figure 1 , Figure 2 as well as Figure 3 As shown, the bottom of the raw material conveying tower 220 is provided with a raw material inlet for conveying raw materials and a semi-finished product inlet for conveying semi-finished products for further pretreatment. The semi-finished product inlet of the raw material conveying tower 220 is connected to the reprocessing outlet 334 of the reaction chamber 330. The top of the raw material conveying tower 220 is provided with a raw material outlet. A distribution funnel 221 is provided at the raw material outlet. The distribution funnel 221 is connected to the double drum stirring device 210. Combination Figure 1 and Figure 2 As shown, the dual-drum stirring device 210 includes two cylindrical drums 211 arranged side by side. The inner wall of the cylindrical drums 211 is evenly distributed with axial fan blades. One end of the cylindrical drums 211 is provided with a feed inlet, and the other end of the cylindrical drums 211 is provided with a discharge outlet. The feed inlet of the cylindrical drums 211 is connected to the material distribution funnel 221 of the raw material conveying tower 220, and the discharge outlet of the cylindrical drums 211 is connected to the pretreatment inlet 331 of the reaction chamber 330. The bottom of the raw material conveying tower 220 is equipped with a raw material inlet and a semi-finished product inlet, which can simultaneously receive fresh raw materials and reprocessed semi-finished products returned from the reaction chamber 330, realizing the pre-mixing of raw materials and circulating materials and improving the uniformity of pre-treatment. The top distribution funnel 221 ensures that the material is evenly distributed to the double drum agitator 210, avoiding fluctuations in the pre-treatment effect caused by uneven feeding from a single drum. The parallel cylindrical drum 211 structure of the double drum agitator 210 effectively improves the pre-treatment throughput by processing materials in parallel through two independent drums, ensuring that the raw materials reach an ideal homogenization state before entering the reaction chamber 330.
[0030] The cylindrical drum 211 has axial fan blades arranged in a 120° spiral pattern, with the fan blade height being 1 / 5 to 1 / 3 of the drum diameter. The drum axis of the cylindrical drum 211 forms an angle of 15° to 30° with the horizontal plane. The cylindrical drum 211 is fixed to the multi-layer frame platform by a support frame. A maintenance guardrail is provided on the top of the raw material conveying tower 220. The axial fan blades on the inner wall of the cylindrical drum 211 are arranged in a 120° spiral pattern, with the fan blade height being 1 / 5 to 1 / 3 of the drum diameter. Combined with the 15° to 30° angle between the drum axis and the horizontal plane, the material can be sheared and stirred by the spiral fan blades to enhance the uniformity of mixing. The angle also allows for continuous tumbling and pushing from the feed inlet to the discharge outlet, avoiding uneven concentration or temperature in certain areas. The maintenance guardrail on the top of the raw material conveying tower 220 provides safety protection for equipment maintenance and ensures the personal safety of operators during maintenance.
[0031] Combination Figure 1 , Figure 2 as well as Figure 4 As shown, the vertical distillation column 310 has a funnel-shaped condenser 311 connected to its top, a condensation inlet at its bottom, and a condensation outlet at its funnel-shaped condenser 311. The condensation outlet of the funnel-shaped condenser 311 is connected to the reflux inlet 332 of the reaction chamber 330, and the condensation inlet of the vertical distillation column 310 is connected to the vaporization outlet 333 of the reaction chamber 330. The funnel-shaped condenser 311 at the top of the vertical distillation column 310 is designed to increase the condensation area and improve the steam condensation efficiency. The condensation outlet is connected to the reflux inlet 332 of the reaction chamber 330 to form a distillation reflux system, allowing the high-purity components after condensation to return to the reaction chamber 330 to participate in the secondary reaction, further improving the distillation separation accuracy. The condensation inlet is directly connected to the vaporization outlet 333 of the reaction chamber 330, shortening the steam transport path, reducing heat loss, and ensuring the efficient operation of the distillation purification unit 300.
[0032] The funnel-shaped condenser 311 has a double-layer conical structure with a cone apex angle of 70° to 85° and a cone base angle of 100° to 120°. This application increases the steam condensation contact area through the double-layer design, while the optimized cone angle ensures uniform steam distribution and controllable flow rate during condensation, avoiding incomplete local condensation. The matching design of the cone apex and cone base angles further improves condensation efficiency, ensures the purity of the reflux material after condensation, and provides a guarantee for the stable operation of the distillation and purification unit 300.
[0033] The multi-layer frame platform is fixedly connected to each other by several vertical columns. The multi-layer frame platform is constructed of steel profiles. The edges of the multi-layer steel platform are equipped with safety railings. The bottom of the multi-layer steel platform is equipped with maintenance stairs. The installation of safety railings and maintenance stairs on the multi-layer frame platform reduces the accident rate. The three-dimensional support frame 100 is provided with three-layer platforms. The raw material conveying tower 220 is located at the center of the three-dimensional support frame 100. The double-drum stirring device 210 is fixed on the top layer of the three-dimensional support frame 100 and is located on one side of the raw material conveying tower 220. The storage and refining unit 400 is located in the middle layer of the three-dimensional support frame 100 and is located below the double-drum stirring device 210. The reaction chamber 330 is fixed to the three-dimensional support frame 100. The reaction chamber 330 is located on the other side of the raw material conveying tower 220, and the vertical distillation column 310 is symmetrically arranged on both sides of the reaction chamber 330. The three-layer platform layout of the three-dimensional support frame 100 clearly defines the functional zoning of each unit: the raw material conveying tower 220 is located in the center to achieve centralized material distribution; the double drum stirring device 210 is located on the top layer to facilitate the downward conveying of raw materials by gravity after pretreatment; the storage and refining unit 400 is located in the middle layer below the double drums to shorten the product collection path; and the vertical distillation column 310 is symmetrically distributed on both sides of the reaction chamber 330 to balance the stress on the equipment structure. This layered and symmetrical layout not only significantly saves floor space but also facilitates equipment installation, maintenance, and operation monitoring, improving overall operating efficiency.
[0034] This application also includes a piping system comprising a high-temperature resistant pipe for transporting high-temperature media and a steam outlet pipe. The high-temperature resistant pipe connects the raw material transport tower 220, the vertical distillation tower 310, the reaction chamber 330, and the storage and refining unit 400. The steam outlet pipe is located at the vaporization outlet 333 of the reaction chamber 330 and extends to the bottom of the vertical distillation tower 310. The high-temperature resistant pipe in the piping system adapts to the high-temperature media transport requirements during raw material pretreatment and distillation, ensuring stable material transport. The steam outlet pipe extends to the bottom of the vertical distillation tower 310, allowing the steam from the vaporization outlet 333 of the reaction chamber 330 to be directly introduced to the bottom of the distillation tower, reducing heat loss of steam during transport, ensuring uniform steam distribution within the distillation tower, improving distillation separation efficiency, and reducing pipeline energy consumption.
[0035] This application also includes an electrical control system, which is centrally located in an independent power distribution cabinet within the reaction chamber 330. The independent power distribution cabinet has zoned power supply interfaces on its cabinet. The electrical control system connects to the raw material pretreatment unit 200, the distillation and purification unit 300, and the storage and refining unit 400 respectively through these zoned power supply interfaces. The centralized arrangement of the electrical control system in the independent power distribution cabinet with zoned power supply interfaces enables independent control of the power supply to the raw material pretreatment unit 200, the distillation and purification unit 300, and the storage and refining unit 400, facilitating fault diagnosis and energy management. The independent power distribution cabinet within the reaction chamber 330 avoids external environmental influences on electrical components, improving system operational safety. The zoned power supply design ensures independent and stable operation of each unit, reducing the risk of overall downtime due to localized faults.
[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. An ethylene glycol purification apparatus, characterized in that, It includes a three-dimensional support frame (100), a raw material pretreatment unit (200), a distillation and purification unit (300), and a storage and refining unit (400), all of which are mounted on the three-dimensional support frame (100). The three-dimensional support frame (100) is a multi-layer frame platform; The raw material pretreatment unit (200) includes a double drum agitator (210) and a raw material conveying tower (220), which is connected to the double drum agitator (210); The distillation and purification unit (300) includes a vertical distillation column (310) and a box-type reaction device (320). The box-type reaction device (320) is equipped with a reaction chamber (330) and a reactor (340). The reactor (340) is located inside the reaction chamber (330). The reaction chamber (330) is equipped with a pretreatment inlet (331), a reflux inlet (332), a vaporization outlet (333), a reprocessing outlet (334), and a distillation outlet (335). The pretreatment inlet (331) is connected to the double drum agitator (210), the reflux inlet (332) of the reaction chamber (330) is connected to the outlet of the vertical distillation column (310), the vaporization outlet (333) of the reaction chamber (330) is connected to the inlet of the vertical distillation column (310), the reprocessing outlet (334) of the reaction chamber (330) is connected to the raw material conveying tower (220), and the distillation outlet (335) of the reaction chamber (330) is connected to the storage and refining unit (400).
2. The ethylene glycol purification apparatus according to claim 1, characterized in that, The material storage and refining unit (400) is fixed to the middle layer of the multi-layer frame platform, and the material storage and refining unit (400) is located below the double drum stirring device (210). The storage and refining unit (400) includes a storage tank (410) and a refining tank (420). The storage tank (410) is connected to the refining tank (420). The inlet of the storage tank (410) is connected to the distillation outlet (335) of the reaction chamber (330). An adsorption filter (430) is provided inside the refining tank (420). The bottom of the storage and refining unit (400) has a product outlet, which is connected to the refining tank (420).
3. The ethylene glycol purification apparatus according to claim 2, characterized in that, The adsorption filter (430) of the refining box (420) includes a molecular sieve layer (431) and an activated carbon fiber layer (432) arranged from top to bottom, wherein the pore size of the molecular sieve layer (431) is 3-5 Å.
4. The ethylene glycol purification apparatus according to claim 1, characterized in that, The bottom of the raw material conveying tower (220) is provided with a raw material inlet for conveying raw materials and a semi-finished product inlet for conveying semi-finished products for further pretreatment. The semi-finished product inlet of the raw material conveying tower (220) is connected to the reprocessing outlet (334) of the reaction chamber (330). The top of the raw material conveying tower (220) is provided with a raw material outlet. A material distribution funnel (221) is provided at the raw material outlet. The material distribution funnel (221) is connected to the double drum stirring device (210). The dual-drum stirring device (210) includes two cylindrical drums (211) arranged side by side. The inner wall of the cylindrical drums (211) is evenly distributed with axial fan blades. One end of the cylindrical drums (211) is provided with a feed inlet, and the other end of the cylindrical drums (211) is provided with a discharge outlet. The feed inlet of the cylindrical drums (211) is connected to the material distribution funnel (221) of the raw material conveying tower (220), and the discharge outlet of the cylindrical drums (211) is connected to the pretreatment inlet (331) of the reaction chamber (330).
5. The ethylene glycol purification apparatus according to claim 4, characterized in that, The axial blades of the cylindrical roller (211) are spirally distributed at 120°, and the height of the blades is 1 / 5 to 1 / 3 of the roller diameter. The roller axis of the cylindrical roller (211) is inclined at an angle of 15° to 30° with the horizontal plane. The cylindrical roller (211) is fixed on the multi-layer frame platform by a support frame.
6. The ethylene glycol purification apparatus according to claim 1, characterized in that, The vertical distillation column (310) is connected to a funnel-shaped condenser (311) at the top, and a condensation inlet is provided at the bottom of the vertical distillation column (310). The funnel-shaped condenser (311) is provided with a condensation outlet. The condensation outlet of the funnel-shaped condenser (311) of the vertical distillation column (310) is connected to the reflux inlet (332) of the reaction chamber (330), and the condensation inlet of the vertical distillation column (310) is connected to the vaporization outlet (333) of the reaction chamber (330).
7. The ethylene glycol purification apparatus according to claim 6, characterized in that, The funnel-shaped condenser (311) has a double-layer conical structure with a cone apex angle of 70° to 85° and a cone base angle of 100° to 120°.
8. An ethylene glycol purification apparatus according to any one of claims 1 to 7, characterized in that, The three-dimensional support frame (100) is provided with three-layer platforms. The raw material conveying tower (220) is located at the center of the three-dimensional support frame (100). The double drum stirring device (210) is fixed on the top layer of the three-dimensional support frame (100) and is located on one side of the raw material conveying tower (220). The storage and refining unit (400) is located in the middle layer of the three-dimensional support frame (100) and is located below the double drum stirring device (210). The reaction chamber (330) is fixed in the middle layer of the three-dimensional support frame (100) and is located on the other side of the raw material conveying tower (220). The vertical distillation column (310) is symmetrically arranged on both sides of the reaction chamber (330).
9. An ethylene glycol purification apparatus according to any one of claims 1 to 7, characterized in that, It also includes a piping system, which includes a high-temperature resistant pipe for transporting high-temperature media and a steam outlet pipe. The high-temperature resistant pipe connects the raw material transport tower (220), the vertical distillation tower (310), the reaction chamber (330), and the storage and refining unit (400). The steam outlet pipe is located at the vaporization outlet (333) of the reaction chamber (330) and extends to the bottom of the vertical distillation tower (310).
10. An ethylene glycol purification apparatus according to any one of claims 1 to 7, characterized in that, It also includes an electrical control system, which is centrally located in an independent power distribution cabinet. The independent power distribution cabinet is located in the reaction chamber (330). The cabinet of the independent power distribution cabinet is equipped with a partition power supply interface. The electrical control system is connected to the raw material pretreatment unit (200), the distillation and purification unit (300) and the storage and refining unit (400) through the partition power supply interface.