Water phase recovery tower for ethylene glycol hexyl ether production

Abstract

The utility model relates to the technical field of water phase recovery towers, and provides a water phase recovery tower for ethylene glycol hexyl ether production, which comprises a tower body, a reboiler, a fixed disc, a water inlet pipe and a water distribution mechanism, filler is arranged in the tower body, the reboiler is arranged on the inner bottom wall of the tower body, the input end of the reboiler extends out of the tower body, and the water distribution mechanism is arranged on the fixed disc. The top side wall of the tower body is communicated with an air outlet pipe, a water outlet is formed in the bottom end of the side wall of the tower body, a water drainage control valve is arranged in the water outlet, the fixed disc is fixedly arranged in the tower body, a plurality of ventilation openings are formed in the fixed disc, the water inlet pipe is arranged on the side wall of the tower body in a penetrating mode and extends into the fixed disc, and the water distribution mechanism is arranged on the fixed disc. By means of the technical scheme, the technical problem that in the prior art, due to the fact that a water-phase mixture is prone to uneven distribution in the filler, the substance purification effect is affected is solved.

Description

Technical Field

[0001] This utility model relates to the field of aqueous phase recovery tower technology, specifically to an aqueous phase recovery tower for the production of ethylene glycol hexyl ether. Background Technology

[0002] Aqueous phase recovery towers are chemical equipment used to separate and recover useful aqueous components from mixtures. By utilizing the differences in the physicochemical properties of each component, they achieve the separation and purification of substances and are widely used in the chemical, pharmaceutical, and food industries.

[0003] Its common structure mainly includes the following parts: tower body, packing, and reboiler. In use, the aqueous mixture to be treated enters the aqueous recovery tower through the feed inlet. It first contacts the trays or packing inside the tower. Under gravity, the liquid flows downwards along the surface of the trays or packing. Meanwhile, the reboiler at the bottom of the tower heats the liquid in the bottom, causing partial vaporization. The resulting rising steam flows upwards under the pressure difference. The gas and liquid phases are in full contact on the trays or packing, undergoing mass and heat transfer. Afterwards, the rising steam reaches the top of the tower and enters the condenser, where it is condensed into liquid by the coolant.

[0004] However, during the process of feeding the aqueous mixture into the aqueous recovery tower through the feed inlet, the fixed position of the feed inlet results in a relatively fixed position of the aqueous mixture entering the tower, which in turn makes the distribution of the aqueous mixture in the packing material uneven, thus affecting the separation and purification effect of the substance. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides an aqueous phase recovery tower for the production of ethylene glycol hexyl ether, which solves the technical problem in the prior art that the aqueous phase mixture is easily unevenly distributed in the packing and affects the purification effect of the substance.

[0006] According to one aspect, at least one embodiment of the present invention provides an aqueous phase recovery tower for the production of ethylene glycol hexyl ether, comprising a tower body, packing material installed inside the tower body, a reboiler, a fixed plate, a water inlet pipe, and a water distribution mechanism. The reboiler is installed on the inner bottom wall of the tower body, with its input end extending out of the tower body. An vent pipe is connected to the top side wall of the tower body, and a drain outlet is provided at the bottom end of the side wall of the tower body. A drain control valve is built into the drain outlet. The fixed plate is fixedly installed inside the tower body and has multiple vents. The water inlet pipe passes through the side wall of the tower body and extends into the fixed plate. The water distribution mechanism is installed on the fixed plate and is connected to the water inlet pipe for spraying water into the tower body.

[0007] Preferably, the water distribution mechanism includes a first mounting groove, a water distribution pipe, a connecting mechanism, a first rotating mechanism, and a second rotating mechanism. The first mounting groove is formed on the bottom side wall of the fixed plate. A mounting cover is rotatably mounted on the bottom of the first mounting groove. Multiple water distribution pipes are rotatably mounted in a ring shape on the side wall of the mounting cover. Multiple first nozzles are connected to the water distribution pipes. The two ends of the water distribution pipes are sealed. The connecting mechanism is located inside the mounting cover and is used to connect the water inlet pipe and the water distribution pipe. The first rotating mechanism is located inside the fixed plate and is used to drive the mounting cover to rotate. The second rotating mechanism is located on the mounting cover and is used to drive the water distribution pipe to rotate.

[0008] Furthermore, the connecting mechanism includes a connecting pipe and a rotary joint. The connecting pipe is fixedly disposed at the bottom of the first mounting groove, and the bottom end of the connecting pipe is sealed. The connecting pipe is connected to the water inlet pipe. The rotary joint is installed on the bottom side wall of the connecting pipe. The input end of the rotary joint is connected to the connecting pipe, and a connecting pipe is provided between the output end of the rotary joint and the water distribution pipe. The connecting pipe is rotatably and sealingly connected to the water distribution pipe.

[0009] Furthermore, the first rotating mechanism includes a first cavity, a first gear ring, a first gear, and a first motor. The first cavity is formed inside the fixed disk and communicates with the first mounting groove. The first gear ring is fixedly disposed on the side wall of the mounting cover. The first gear is rotatably disposed inside the first cavity and meshes with the first gear ring. The first motor is mounted on the fixed disk, and the output end of the first motor is fixedly connected to the first gear.

[0010] Furthermore, the second rotating mechanism includes a first bevel gear and a second bevel gear. The first bevel gear is disposed inside the mounting cover. The connecting pipe coaxially passes through the first bevel gear and is fixedly connected to the first bevel gear. The second bevel gear is coaxially disposed on the water distribution pipe. The first bevel gear meshes with the second bevel gear.

[0011] Based on the above scheme, an auxiliary water distribution mechanism is also included. The auxiliary water distribution mechanism is set on the fixed plate and is used to spray water into the tower body. The auxiliary water distribution mechanism includes an annular groove, an annular shell, and a fixed pipe. The annular groove is formed on the bottom side wall of the fixed plate and communicates with the first cavity. The annular shell is rotatably set on the bottom of the annular groove. A plurality of second nozzles are connected to the bottom side wall of the annular shell. A fixed pipe is fixedly set at the output end of the rotary joint. The end of the fixed pipe away from the rotary joint passes through the mounting cover and communicates with the annular shell. The fixed pipe is rotatably connected to the mounting cover.

[0012] Based on the above scheme, a second toothed ring is fixedly provided on the inner wall of the annular shell, and the second toothed ring meshes with the first gear.

[0013] Based on the above scheme, sealing rings are fixedly provided on the side walls of the mounting cover and the side walls of the annular shell, and the sealing rings are in contact with the fixing plate.

[0014] The beneficial effects of the embodiments of this utility model are as follows:

[0015] 1. In this utility model, by setting up a water distribution mechanism, a water phase mixture can be introduced into the connecting pipe and the water distribution pipe through the water inlet pipe, and then the water phase mixture is sprayed into the tower body through the first nozzle. Then, by working the first rotating mechanism and the second rotating mechanism, the angle and position of the first nozzle can be adjusted, thereby facilitating the uniform spraying of the water phase mixture into the packing.

[0016] 2. In this utility model, by setting up an auxiliary water distribution mechanism, the water phase mixture can be sprayed into the tower body by moving the second nozzle, thereby further improving the uniformity of the distribution of the water phase mixture in the packing and thus facilitating the improvement of the purification effect of the substance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the tower body in one embodiment of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the tower body cross-section in the embodiment;

[0020] Figure 3 for Figure 1 A structural schematic diagram of the tower body from another perspective in one embodiment;

[0021] Figure 4 for Figure 1 A schematic diagram of the structure of the water distribution mechanism in the embodiment;

[0022] Figure 5 for Figure 1 A cross-sectional structural schematic diagram of the water distribution mechanism in the embodiment;

[0023] Figure 6 for Figure 1 A cross-sectional structural diagram of the connecting mechanism in the embodiment.

[0024] In the diagram: 1. Tower body; 2. Packing; 3. Reboiler; 4. Gas outlet pipe; 5. Drain outlet; 6. Fixed plate; 7. Vent; 8. Water inlet pipe; 9. Mounting cover; 10. Water distribution pipe; 11. First nozzle; 12. Connecting pipe; 13. Rotary joint; 14. First gear ring; 15. First gear; 16. First motor; 17. First bevel gear; 18. Second bevel gear; 19. Annular shell; 20. Second nozzle; 21. Fixed pipe. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0026] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] like Figures 1-6 As shown, this invention illustrates an embodiment of an aqueous phase recovery tower for ethylene glycol hexyl ether production, comprising a tower body 1, packing material 2 installed inside the tower body 1, a reboiler 3, a fixed plate 6, a water inlet pipe 8, and a water distribution mechanism. The reboiler 3 is installed on the inner bottom wall of the tower body 1, with its input end extending out of the tower body 1. An outlet pipe 4 is connected to the top side wall of the tower body 1, and a drain outlet 5 is provided at the bottom end of the side wall of the tower body 1. The drain outlet 5 has a built-in drain control valve. The fixed plate 6 is fixedly installed inside the tower body 1, and multiple vents 7 are provided on the fixed plate 6. The water inlet pipe 8 is installed through the side wall of the tower body 1 and extends into the fixed plate 6. The water distribution mechanism is installed on the fixed plate 6 and is connected to the water inlet pipe 8 for spraying water into the tower body 1. The outlet pipe 4 is connected to the condenser.

[0032] Reference Figures 2-6 The water distribution mechanism includes a first mounting groove, water distribution pipes 10, a connecting mechanism, a first rotating mechanism, and a second rotating mechanism. The first mounting groove is located on the bottom side wall of the fixed plate 6. A mounting cover 9 is rotatably mounted on the bottom of the first mounting groove. Multiple water distribution pipes 10 are rotatably mounted in a ring shape on the side wall of the mounting cover 9. Multiple first nozzles 11 are connected to the water distribution pipes 10. The two ends of the water distribution pipes 10 are sealed. The connecting mechanism is located inside the mounting cover 9 and is used to connect the water inlet pipe 8 and the water distribution pipes 10. The first rotating mechanism is located inside the fixed plate 6 and is used to drive the mounting cover 9 to rotate. The second rotating mechanism is located on the mounting cover 9 and is used to drive the water distribution pipes 10 to rotate. The connecting mechanism includes a connecting pipe 12. The rotary joint 13 and the connecting pipe 12 are fixedly installed at the bottom of the first installation groove. The bottom end of the connecting pipe 12 is sealed and connected to the water inlet pipe 8. The rotary joint 13 is installed on the bottom side wall of the connecting pipe 12. The input end of the rotary joint 13 is connected to the connecting pipe 12. The output end of the rotary joint 13 is connected to the water distribution pipe 10 by a connecting pipe. The connecting pipe and the water distribution pipe 10 are rotatably and sealed. Specifically, the operator can introduce the water phase mixture into the connecting pipe 12 through the water inlet pipe 8, and then pump the water phase mixture into the water distribution pipe 10 through the rotary joint 13 and the connecting pipe, so as to facilitate the spraying of the water phase mixture into the tower body 1 and the packing 2 through the first nozzle 11.

[0033] Reference Figures 4-6 The first rotating mechanism includes a first cavity, a first gear ring 14, a first gear 15, and a first motor 16. The first cavity is located inside the fixed plate 6 and communicates with the first mounting groove. The first gear ring 14 is fixedly mounted on the side wall of the mounting cover 9. The first gear 15 is rotatably mounted inside the first cavity and meshes with the first gear ring 14. The first motor 16 is mounted on the fixed plate 6, and the output end of the first motor 16 is fixedly connected to the first gear 15. Specifically, the operation of the first motor 16 can drive the first gear 15 to rotate. At the same time, the meshing of the first gear 15 with the first gear ring 14 drives the mounting cover 9 and the water distribution pipe 10 to rotate, thereby facilitating the position adjustment of the first nozzle 11 by rotating the mounting cover 9 and the water distribution pipe 10.

[0034] Reference Figure 4 and Figure 6 The second rotating mechanism includes a first bevel gear 17 and a second bevel gear 18. The first bevel gear 17 is disposed inside the mounting cover 9. The connecting pipe 12 coaxially passes through the first bevel gear 17 and is fixedly connected to the first bevel gear 17. The second bevel gear 18 is coaxially disposed on the water distribution pipe 10. The first bevel gear 17 and the second bevel gear 18 mesh. During the rotation of the mounting cover 9, the water distribution pipe 10 and the second bevel gear 18 can be driven to move around the first bevel gear 17. At the same time, the meshing of the first bevel gear 17 and the second bevel gear 18 drives the water distribution pipe 10 to rotate, thereby facilitating the adjustment of the spray angle of the first nozzle 11 and improving the spray uniformity.

[0035] Reference Figures 3-6It also includes an auxiliary water distribution mechanism, which is mounted on the fixed plate 6 and used to spray water into the tower body 1. The auxiliary water distribution mechanism includes an annular groove, an annular shell 19, and a fixed pipe 21. The annular groove is formed on the bottom side wall of the fixed plate 6 and communicates with the first cavity. The annular shell 19 is rotatably mounted on the bottom of the annular groove. Multiple second nozzles 20 are connected to the bottom side wall of the annular shell 19. The output end of the rotary joint 13 is fixedly mounted with the fixed pipe 21. The end of the fixed pipe 21 away from the rotary joint 13 passes through the mounting cover 9 and communicates with the annular shell 19. The fixed pipe 21 is rotatably connected to the mounting cover 9. A second toothed ring is fixedly mounted on the inner wall of the annular shell 19. The second toothed ring and the... The first gear 15 meshes with the second gear ring. Sealing rings are fixedly installed on the side walls of the mounting cover 9 and the annular shell 19. The sealing rings are in contact with the fixed plate 6. Specifically, during the process of pumping the water phase mixture into the water distribution pipe 10, the water phase mixture can be pumped into the annular shell 19 through the fixed pipe 21. Then, the water phase mixture can be sprayed into the tower body 1 and the packing 2 through the second nozzle 20. At the same time, during the rotation of the first gear 15, the meshing of the first gear 15 and the second gear ring can drive the annular shell 19 and the second nozzle 20 to rotate, which makes it easier to adjust the position of the second nozzle 20, thereby further improving the spray uniformity of the water phase mixture.

[0036] In this embodiment, during use, the operator can introduce the water phase mixture into the connecting pipe 12 through the water inlet pipe 8, and then pump the water phase mixture into the water distribution pipe 10 through the rotary joint 13 and the connecting pipe. This facilitates the spraying of the water phase mixture into the tower body 1 and the packing 2 through the first nozzle 11. Simultaneously, the water phase mixture can be pumped into the annular shell 19 through the fixed pipe 21 and sprayed auxiliaryly through the second nozzle 20. During spraying, the operator controls the first motor 16 to operate. The operation of the first motor 16 drives the first gear 15 to rotate. Simultaneously, the meshing of the first gear 15 with the first gear ring 14 drives the mounting cover 9 and the water distribution pipe 10 to rotate. This facilitates the position adjustment of the first nozzle 11 through the rotation of the mounting cover 9 and the water distribution pipe 10. Furthermore, during the rotation of the mounting cover 9... The first gear 17 can drive the water distribution pipe 10 and the second bevel gear 18 to move around the first bevel gear 18. Simultaneously, the meshing of the first bevel gear 17 and the second bevel gear 18 drives the water distribution pipe 10 to rotate, facilitating the adjustment of the spray angle of the first nozzle 11 and improving spray uniformity. During the rotation of the first gear 15, the meshing of the first gear 15 and the second gear ring drives the annular shell 19 and the second nozzle 20 to rotate, facilitating the adjustment of the position of the second nozzle 20 and further improving the spray uniformity of the water phase mixture. This improves the uniformity of the water phase mixture's distribution within the packing 2. The water phase mixture then flows downwards along the packing 2 under gravity, while the reboiler 3 at the bottom of the tower heats the liquid in the tower body 1, causing partial vaporization. The resulting rising steam flows upwards under the pressure difference. The gas and liquid phases are in full contact on the packing 2, undergoing mass and heat transfer. Afterwards, the rising steam reaches the top of the tower and enters the condenser, where it is condensed into liquid by the coolant.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A water phase recovery tower for the production of ethylene glycol hexyl ether, comprising a tower body (1), wherein packing material (2) is installed inside the tower body (1), characterized in that, Also includes: A reboiler (3) is installed on the inner bottom wall of the tower body (1). The input end of the reboiler (3) extends out of the tower body (1). An outlet pipe (4) is connected to the top side wall of the tower body (1). A drain outlet (5) is provided at the bottom end of the side wall of the tower body (1). A drain outlet (5) has a built-in drain control valve. Fixed plate (6), the fixed plate (6) is fixedly installed inside the tower body (1), and multiple air vents (7) are provided on the fixed plate (6); Water inlet pipe (8) is installed through the side wall of the tower body (1) and extends into the fixed plate (6); A water distribution mechanism is mounted on the fixed plate (6) and connected to the water inlet pipe (8) for spraying water into the tower body (1); the water distribution mechanism includes: The first mounting groove is formed on the bottom side wall of the fixed plate (6), and the bottom of the first mounting groove is rotatably provided with a mounting cover (9). Water distribution pipe (10), multiple water distribution pipes (10) are rotatably arranged in a ring through the side wall of the mounting cover (9), multiple first nozzles (11) are connected to the water distribution pipe (10), and the two ends of the water distribution pipe (10) are sealed. A connecting mechanism is provided inside the mounting cover (9) for connecting the water inlet pipe (8) and the water distribution pipe (10); The first rotating mechanism is disposed inside the fixed disk (6) and is used to drive the mounting cover (9) to rotate; The second rotating mechanism is disposed on the mounting cover (9) and is used to drive the water distribution pipe (10) to rotate; The communication mechanism includes: A connecting pipe (12) is fixedly installed at the bottom of the first mounting groove. The bottom end of the connecting pipe (12) is sealed. The connecting pipe (12) is connected to the water inlet pipe (8). Rotary joint (13), the rotary joint (13) is installed on the bottom side wall of the connecting pipe (12), the input end of the rotary joint (13) is connected to the connecting pipe (12), and the output end of the rotary joint (13) is connected to the water distribution pipe (10) by a connecting pipe, the connecting pipe is rotatably and sealedly connected to the water distribution pipe (10); The first rotating mechanism includes: The first cavity is formed inside the fixed plate (6) and is connected to the first mounting slot. The first toothed ring (14) is fixedly disposed on the side wall of the mounting cover (9); The first gear (15) is rotatably disposed in the first cavity and meshes with the first gear ring (14); The first motor (16) is mounted on the fixed disk (6), and the output end of the first motor (16) is fixedly connected to the first gear (15); The second rotating mechanism includes: The first bevel gear (17) is disposed inside the mounting cover (9), and the connecting pipe (12) coaxially passes through the first bevel gear (17) and is fixedly connected to the first bevel gear (17). The second bevel gear (18) is coaxial and fixedly mounted on the water distribution pipe (10), and the first bevel gear (17) meshes with the second bevel gear (18).

2. The water phase recovery tower for ethylene glycol hexyl ether production according to claim 1, characterized in that, It also includes an auxiliary water distribution mechanism, which is mounted on the fixed plate (6) and used to spray water into the tower body (1). The auxiliary water distribution mechanism includes: An annular groove is formed on the bottom side wall of the fixed disk (6) and communicates with the first cavity; An annular housing (19) is rotatably disposed on the bottom of the annular groove, and a plurality of second nozzles (20) are connected to the bottom sidewall of the annular housing (19). Fixed tube (21): The output end of the rotary joint (13) is fixedly provided with a fixed tube (21). The end of the fixed tube (21) away from the rotary joint (13) passes through the mounting cover (9) and communicates with the annular shell (19). The fixed tube (21) is rotatably connected to the mounting cover (9).

3. The water phase recovery tower for ethylene glycol hexyl ether production according to claim 2, characterized in that, The inner wall of the annular housing (19) is fixedly provided with a second toothed ring, which meshes with the first gear (15).

4. The water phase recovery tower for ethylene glycol hexyl ether production according to claim 3, characterized in that, The sidewalls of the mounting cover (9) and the annular shell (19) are both fixedly provided with sealing rings, which are in contact with the fixed plate (6).

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