Efficient series circulating rectifying tower device

Abstract

The invention discloses an efficient series circulating rectifying tower device, and relates to the technical field of rectifying towers. A tower body is mounted on the tower kettle; the collecting mechanism is arranged on the tower body and used for collecting condensate formed on the inner wall of the tower top, the collecting mechanism comprises a water tank ring, a support, a first pump, a collecting pipe, an electromagnetic valve and a scraping assembly, the water tank ring is fixedly connected with the inner wall of the tower body, the support is fixedly connected to the outer side wall of the tower body, and the first pump is installed on the support; a liquid inlet of the first pump communicates with a collecting pipe, the end, away from the first pump, of the collecting pipe communicates with the water tank ring, and an electromagnetic valve is installed on the collecting pipe. Condensate formed on the inner wall of the tower top flows into the water tank ring along the inner wall of the tower body, and the condensate and reflux liquid are prevented from flowing back into the tower together, so that the reflux quantity can be accurately controlled, the reflux ratio can be accurately adjusted, the problems of flooding or tower flushing and the like are avoided, and the rectification efficiency of the series rectifying tower is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rectifying column, more particularly, it relates to a high-efficiency series connection circulating rectifying column device. BACKGROUND

[0002] The rectifying column is a device for separating mixtures, which realizes high-purity separation through rectification based on the difference in volatility of each component in the mixture. The rectifying column usually contains multiple trays or packing layers inside, which provide opportunities for gas-liquid two-phase contact, so that each component can be separated during the step-by-step ascending or descending process of the mixture in the column. The series connection rectifying column refers to connecting two or more rectifying columns through pipelines and distillation chambers to form a continuous rectification system. Each rectifying column plays a different role in the system, and together they complete the efficient separation and purification of the mixture, which can significantly improve the separation effect of the mixture and the purity of the product, while improving the mass and heat transfer efficiency, optimizing the component purity, improving the system stability and reducing energy consumption.

[0003] In the rectification process, a part of the overhead distillate needs to be sent back into the column after condensation, which is called reflux. Reflux is a necessary condition to maintain the balance of gas-liquid two-phase in the column and ensure the continuous and stable operation of the rectification process. Through reflux, the temperature distribution and material concentration in the column can be effectively controlled, so as to realize the effective separation of each component in the mixture.

[0004] However, when the existing gas phase rises in the column and contacts the inner wall of the column top, condensate is easily formed on the inner wall of the column top. This part of condensate will flow back into the column together with the reflux liquid. However, since the amount of this part of condensate is not controlled, it is difficult to accurately control the overall reflux amount, so it is difficult to accurately adjust the reflux ratio (the ratio of the reflux amount to the column top product extraction amount), which can easily cause problems such as flooding or column collision, affecting the rectification efficiency. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a high-efficiency series connection circulating rectifying column device.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a high-efficiency series connection circulating rectifying column device, comprising a column still, a collecting mechanism and a descaling mechanism;

[0007] The column still is provided with a column body, and the column still is provided with an electric heating pipe inside;

[0008] The collecting mechanism is arranged on the tower body, and is used for collecting the condensate formed on the inner wall of the tower top; the collecting mechanism comprises a water groove ring, a support, a first pump, a collecting pipe, a solenoid valve and a scraping assembly; the water groove ring is fixedly connected with the inner wall of the tower body; the condensate formed on the inner wall of the tower top flows along the inner wall of the tower body into the water groove ring, so that the condensate is prevented from flowing back into the tower together with the reflux liquid, the reflux amount can be accurately controlled, the reflux ratio can be accurately adjusted, problems such as liquid flooding or tower collision are avoided, and the rectification efficiency of the series connection rectification tower is ensured; the outer side wall of the tower body is fixedly connected with the support; the first pump is installed on the support; the liquid inlet of the first pump is communicated with the collecting pipe; one end of the collecting pipe, which is away from the first pump, is communicated with the water groove ring; the first pump can draw out the condensate collected in the water groove ring through the collecting pipe; the solenoid valve is installed on the collecting pipe; the solenoid valve can control the opening and closing of the collecting pipe; when the condensate is not needed to be drawn out, the collecting pipe can be blocked, so that the gas phase in the tower body is prevented from leaking out through the collecting pipe.

[0009] The scraping assembly is connected with the tower body, and is used for scraping the condensate formed on the inner wall of the tower top.

[0010] The descaling mechanism is arranged on the tower kettle, and is used for removing the water scale on the electric heating pipe.

[0011] Further technical solutions of the present application: the scraping assembly comprises a ring rail, a sliding block, a rotating ring, a scraper and a driving assembly; the ring rail is fixedly connected with the inner wall of the tower body, and is located above the water groove ring; a plurality of sliding blocks are slidably connected with the ring rail; the plurality of sliding blocks are fixedly connected with the rotating ring; the rotating ring is fixedly connected with the scraper; and the scraper is attached to the inner wall of the tower body.

[0012] The driving assembly is connected with the rotating ring, and is used for driving the rotating ring to rotate; the rotating ring can drive the scraper to rotate; and the scraper can scrape the condensate on the inner wall of the tower body, so as to accelerate the collection of the condensate.

[0013] Further technical solutions of the present application: the driving assembly comprises a gear ring, a gear, a driving shaft and a first motor; the gear ring is fixedly connected with the rotating ring; the gear ring is meshingly connected with the gear; the gear is fixedly connected with the driving shaft; the driving shaft is connected with the output shaft of the first motor through a shaft coupling; and the first motor is installed on the tower body.

[0014] Further technical solutions of the present application: the descaling mechanism comprises a descaling box, a descaling plate, a horizontal moving assembly and a leading-out assembly; the descaling box is sleeved on the electric heating pipe; the inside of the descaling box is fixedly connected with the descaling plate; the descaling plate is slidably connected with the electric heating pipe; a plurality of water inlets are formed in the descaling box; and the electric heating pipe penetrates through the plurality of water inlets.

[0015] The horizontal moving assembly is connected with the tower kettle, and is used to drive the descaling box to move, the descaling box can drive the descaling plate to move along the electric heating pipe, the descaling plate can scrape off the scale on the electric heating pipe during the movement, and the scraped-off scale is collected by the descaling box, so that the heat transfer efficiency of the electric heating pipe is ensured, the heat transfer efficiency caused by the scale is avoided to be reduced, and phenomena such as overpressure are caused.

[0016] The export assembly is connected with the tower kettle, and is used to export the scale from the tower kettle.

[0017] Further technical solutions of the application: the horizontal moving assembly comprises a second motor, a lead screw and a guide rod, the second motor is installed on the tower kettle, the output shaft of the second motor is connected with the lead screw through a shaft coupling, the lead screw is rotationally connected with the tower kettle, one end of the lead screw is threadedly connected with the descaling box, the other end of the descaling box is slidably connected with the guide rod, and the guide rod is fixedly connected with the tower kettle.

[0018] Further technical solutions of the application: the export assembly comprises a second pump, a hard pipe and a soft pipe, the second pump is installed on the tower kettle, the water inlet of the second pump is connected with the hard pipe, the end of the hard pipe away from the second pump penetrates into the inside of the tower kettle and is connected with the soft pipe, and the end of the soft pipe away from the hard pipe is connected with the inside of the descaling box.

[0019] The second pump can pump out the scale in the descaling box, the liquid in the tower kettle is supplemented into the descaling box through the water inlet, and meanwhile, the scale in the descaling box can be prevented from running out through the water inlet.

[0020] Compared with the prior art, the application has the following beneficial effects:

[0021] 1. The condensate formed on the inner wall of the tower top can flow into the water tank ring along the inner wall of the tower body, so that the condensate is prevented from flowing back into the tower together with the reflux liquid, the reflux amount can be accurately controlled, the reflux ratio can be accurately adjusted, problems such as liquid overflow or tower collision are avoided, and the rectification efficiency of the series connection rectifying tower is ensured.

[0022] 2. The first motor can drive the gear to rotate through the driving shaft, the gear can drive the rotating ring to rotate through the meshing gear ring, the rotating ring can drive the scraper to rotate, and the scraper can scrape off the condensate on the inner wall of the tower body, so that the collection of the condensate is accelerated.

[0023] 3. The second motor can drive the lead screw to rotate, the rotating lead screw can drive the descaling box to reciprocatingly move along the guide rod, the descaling box can drive the descaling plate to move along the electric heating pipe, the descaling plate can scrape off the scale on the electric heating pipe during the movement, and the scraped-off scale is collected by the descaling box, so that the heat transfer efficiency of the electric heating pipe is ensured, the heat transfer efficiency caused by the scale is avoided to be reduced, and phenomena such as overpressure are caused.

[0024] The above description is only a summary of the technical solutions of the present application. In order to make the technical means of the present application more clearly understood and implemented according to the content of the description, the following will describe the preferred embodiments of the present application in detail with reference to the accompanying drawings. The specific embodiments of the present application are described in detail by the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated into and constitute a part of this application, serve to provide a further understanding of the present application, and the illustrative embodiments thereof and their description serve to explain the present application and do not constitute an improper limitation thereof. In the drawings:

[0026] Figure 1 It is a schematic diagram of the overall structure of the embodiments of the present application;

[0027] Figure 2 It is a sectional view of the tower body in the embodiments of the present application;

[0028] Figure 3 It is a sectional view of the ring rail in the embodiments of the present application;

[0029] Figure 4 It is a sectional view of the tower kettle in the embodiments of the present application;

[0030] Figure 5 It is a sectional view of the descaling box in the embodiments of the present application.

[0031] In the drawings: 1, tower kettle; 2, tower body; 3, sink ring; 4, support; 5, first pump; 6, collection pipe; 7, electromagnetic valve; 8, electric heating pipe; 9, ring rail; 10, sliding block; 11, rotating ring; 12, scraper; 13, gear ring; 14, gear; 15, drive shaft; 16, first motor; 17, descaling box; 18, descaling plate; 19, water inlet; 20, second motor; 21, lead screw; 22, guide rod; 23, second pump; 24, hard pipe; 25, hose. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described in detail below with reference to the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] In the description of the embodiments of the present application, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0035] Referring to Figures 1 to 5 , in one embodiment of the present application, a high-efficiency series-circulation rectification tower device comprises a tower kettle 1, a collecting mechanism and a descaling mechanism;

[0036] The tower kettle 1 is provided with a tower body 2, and the inside of the tower kettle 1 is provided with an electric heating pipe 8;

[0037] The collecting mechanism is arranged on the tower body 2, and the collecting mechanism is used for collecting the condensate formed on the inner wall of the tower top, and the collecting mechanism comprises a water groove ring 3, a support 4, a first pump 5, a collecting pipe 6, an electromagnetic valve 7 and a scraping assembly, the water groove ring 3 is fixedly connected with the inner wall of the tower body 2, as shown in Figure 2 The condensate formed on the inner wall of the tower top will flow along the inner wall of the tower body 2 into the water groove ring 3, avoiding the condensate flowing back into the tower together with the reflux liquid, so as to accurately control the reflux amount, and then accurately adjust the reflux ratio, avoiding problems such as liquid flooding or tower collision, and ensuring the rectification efficiency of the series-circulation rectification tower; the outer side wall of the tower body 2 is fixedly connected with the support 4, the first pump 5 is arranged on the support 4, the inlet of the first pump 5 is communicated with the collecting pipe 6, and the end of the collecting pipe 6 away from the first pump 5 is communicated with the water groove ring 3, as shown in Figure 2 The first pump 5 can draw out the condensate collected in the water groove ring 3 through the collecting pipe 6, the electromagnetic valve 7 is arranged on the collecting pipe 6, and the opening and closing of the collecting pipe 6 can be controlled through the electromagnetic valve 7, so as to block the collecting pipe 6 when the condensate is not needed to be drawn out, avoiding the gas phase in the tower body 2 from leaking out through the collecting pipe 6;

[0038] The scraping assembly is connected to the tower body 2, and the scraping assembly is used to scrape off the condensate formed on the inner wall of the tower top;

[0039] The descaling mechanism is installed on the tower 1 and is used to remove scale from the electric heating tube 8.

[0040] Reference Figure 2 and Figure 3 In a preferred embodiment of this application, the scraping assembly includes a ring rail 9, sliders 10, a rotating ring 11, a scraper 12, and a driving assembly. The ring rail 9 is fixedly connected to the inner wall of the tower body 2 and is located above the water tank ring 3. Multiple sliders 10 are slidably connected to the ring rail 9, and each slider 10 is fixedly connected to the rotating ring 11. The rotating ring 11 is supported by the multiple sliders 10, and the rotating ring 11 can rotate on the ring rail 9 with the help of the multiple sliders 10. A scraper 12 is fixedly connected to the rotating ring 11, and the scraper 12 is in contact with the inner wall of the tower body 2.

[0041] The drive assembly is connected to the rotating ring 11. The drive assembly is used to drive the rotating ring 11 to rotate, which in turn drives the scraper 12 to rotate. The scraper 12 can then scrape off the condensate on the inner wall of the tower body 2, accelerating the collection of the condensate.

[0042] Reference Figure 2 and Figure 3 In a preferred embodiment of this application, the drive assembly includes a gear ring 13, a gear 14, a drive shaft 15, and a first motor 16. The gear ring 13 is fixedly connected to the rotating ring 11, and the gear 14 is meshed on the gear ring 13. The gear 14 is fixedly connected to the drive shaft 15, and the drive shaft 15 is connected to the output shaft of the first motor 16 via a coupling. The first motor 16 is mounted on the tower body 2, and the first motor 16 can drive the gear 14 to rotate via the drive shaft 15. The gear 14 can drive the rotating ring 11 to rotate via the meshing gear ring 13.

[0043] Reference Figure 4 and Figure 5 In a preferred embodiment of this application, the descaling mechanism includes a descaling box 17, a descaling plate 18, a transverse moving assembly, and a discharge assembly. The descaling box 17 is sleeved on the electric heating tube 8. The descaling plate 18 is fixedly connected inside the descaling box 17. The descaling plate 18 is slidably connected to the electric heating tube 8 and fits against the electric heating tube 8. The descaling box 17 has multiple water inlets 19. The electric heating tube 8 passes through the multiple water inlets 19. The diameter of the water inlets 19 is larger than the diameter of the electric heating tube 8.

[0044] The transverse moving assembly is connected to the tower 1. The transverse moving assembly is used to move the descaling box 17. The descaling box 17 can move the descaling plate 18 along the electric heating tube 8. During the movement, the descaling plate 18 can scrape off the scale on the electric heating tube 8. The scraped scale is collected by the descaling box 17, thereby ensuring the heat transfer efficiency of the electric heating tube 8 and avoiding the decrease in heat transfer efficiency caused by scale, or even the occurrence of overpressure.

[0045] The discharge component is connected to the tower 1 and is used to discharge scale from the tower 1.

[0046] Reference Figure 4 In a preferred embodiment of this application, the transverse moving assembly includes a second motor 20, a lead screw 21, and a guide rod 22. The second motor 20 is mounted on the tower vessel 1. The output shaft of the second motor 20 is connected to the lead screw 21 via a coupling. The lead screw 21 is rotatably connected to the tower vessel 1. One end of the lead screw 21 is threadedly connected to the descaling box 17. The other end of the descaling box 17 is slidably connected to the guide rod 22. The guide rod 22 is fixedly connected to the tower vessel. The second motor 20 can drive the lead screw 21 to rotate. The rotating lead screw 21 can drive the descaling box 17 to reciprocate along the guide rod 22, thereby performing descaling.

[0047] Reference Figure 4 and Figure 5 In a preferred embodiment of this application, the outlet component includes a second pump 23, a rigid pipe 24, and a flexible pipe 25. The second pump 23 is installed on the tower 1. The inlet of the second pump 23 is connected to the rigid pipe 24. The end of the rigid pipe 24 away from the second pump 23 extends into the interior of the tower 1 and is connected to the flexible pipe 25. The end of the flexible pipe 25 away from the rigid pipe 24 is connected to the interior of the descaling box 17. The flexible pipe 25 does not affect the movement of the descaling box 17.

[0048] The scale in the descaling box 17 can be extracted by the second pump 23, and the liquid in the tower 1 is replenished into the descaling box 17 through the water inlet 19. At the same time, it can prevent the scale from running out of the descaling box 17 through the water inlet 19. Similarly, in order to block the rigid pipe 24 when needed, a solenoid valve can be installed on the rigid pipe 24.

[0049] Working principle: The condensate formed on the inner wall of the top of the column flows along the inner wall of the column body 2 into the water tank ring 3, preventing the condensate from flowing back into the column with the reflux liquid. This allows for precise control of the reflux flow rate and precise adjustment of the reflux ratio, avoiding problems such as flooding or column overflow, and ensuring the distillation efficiency of the series distillation columns. The first pump 5 can extract the condensate accumulated in the water tank ring 3 through the collection pipe 6. The solenoid valve 7 can control the opening and closing of the collection pipe 6, and can block the collection pipe 6 when it is not necessary to extract the condensate, preventing the gas phase in the column body 2 from leaking out through the collection pipe 6.

[0050] The descaling box 17 can drive the descaling plate 18 to move along the electric heating tube 8. During the movement, the descaling plate 18 can scrape off the scale on the electric heating tube 8, and the scale scraped off is collected by the descaling box 17, thereby ensuring the heat transfer efficiency of the electric heating tube 8 and avoiding the decrease in heat transfer efficiency caused by scale, or even causing overpressure and other phenomena.

[0051] It should be noted that: the accompanying drawings of this application only show the internal structure of a single distillation column, while the other multiple distillation columns connected in series also have these structures, which are omitted in the drawings; the electrical components appearing in this application are all connected to the external main controller and 220V mains power, and the main controller can be a processor, alarm module, and drive module, etc., to control conventional known devices; the standard parts used in this application can all be purchased from the market, and the specific connection methods of each part are all connected by conventional means such as bolts, rivets, and welding that are mature in the prior art, and the machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0052] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency series-circulation distillation column apparatus, characterized in that, include: A tower pot (1), on which a tower body (2) is installed, and an electric heating tube (8) is installed inside the tower pot (1); A collection mechanism is provided on the tower body (2) and is used to collect condensate formed on the inner wall of the tower top. The collection mechanism includes a water tank ring (3), a support (4), a first pump (5), a collection pipe (6), a solenoid valve (7), and a scraping assembly. The water tank ring (3) is fixedly connected to the inner wall of the tower body (2). The support (4) is fixedly connected to the outer wall of the tower body (2). The first pump (5) is installed on the support (4). The collection pipe (6) is connected to the inlet of the first pump (5). The end of the collection pipe (6) away from the first pump (5) is connected to the water tank ring (3). The solenoid valve (7) is installed on the collection pipe (6). The scraping assembly is connected to the tower body (2), and the scraping assembly is used to scrape off the condensate formed on the inner wall of the tower top; as well as A descaling mechanism is provided on the tower (1) and is used to remove scale from the electric heating tube (8).

2. The high-efficiency series-circulation distillation column apparatus according to claim 1, characterized in that: The scraping assembly includes a ring rail (9), sliders (10), a rotating ring (11), a scraper (12), and a drive assembly. The ring rail (9) is fixedly connected to the inner wall of the tower body (2) and is located above the water tank ring (3). Multiple sliders (10) are slidably connected to the ring rail (9). The multiple sliders (10) are fixedly connected to the rotating ring (11). A scraper (12) is fixedly connected to the rotating ring (11) and is in contact with the inner wall of the tower body (2). The drive component is connected to the rotating ring (11) and is used to drive the rotating ring (11) to rotate.

3. The high-efficiency series-circulation distillation column apparatus according to claim 2, characterized in that: The drive assembly includes a gear ring (13), a gear (14), a drive shaft (15), and a first motor (16). The gear ring (13) is fixedly connected to the rotating ring (11). The gear (14) is meshed on the gear ring (13). The gear (14) is fixedly connected to the drive shaft (15). The drive shaft (15) is connected to the output shaft of the first motor (16) through a coupling. The first motor (16) is mounted on the tower body (2).

4. The high-efficiency series-circulation distillation column apparatus according to claim 1, characterized in that: The descaling mechanism includes a descaling box (17), a descaling plate (18), a transverse moving component, and an outlet component. The descaling box (17) is sleeved on the electric heating tube (8). The descaling plate (18) is fixedly connected inside the descaling box (17). The descaling plate (18) is slidably connected to the electric heating tube (8). The descaling box (17) has multiple water inlets (19). The electric heating tube (8) passes through the multiple water inlets (19). The transverse moving assembly is connected to the tower (1), and the transverse moving assembly is used to move the descaling box (17); The discharge component is connected to the tower (1) and is used to discharge scale from the tower (1).

5. The high-efficiency series-circulation distillation column apparatus according to claim 4, characterized in that: The transverse assembly includes a second motor (20), a lead screw (21), and a guide rod (22). The second motor (20) is mounted on the tower (1). The output shaft of the second motor (20) is connected to the lead screw (21) via a coupling. The lead screw (21) is rotatably connected to the tower (1). One end of the lead screw (21) is threadedly connected to the descaling box (17). The other end of the descaling box (17) is slidably connected to the guide rod (22). The guide rod (22) is fixedly connected to the tower.

6. The high-efficiency series-circulation distillation column apparatus according to claim 4, characterized in that: The outlet assembly includes a second pump (23), a rigid pipe (24), and a flexible pipe (25). The second pump (23) is installed on the tower (1). The inlet of the second pump (23) is connected to the rigid pipe (24). The end of the rigid pipe (24) away from the second pump (23) extends into the interior of the tower (1) and is connected to the flexible pipe (25). The end of the flexible pipe (25) away from the rigid pipe (24) is connected to the interior of the descaling box (17).

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