Backflow liquid gathering device, intermittent bunched rectifying tower and continuous bunched rectifying tower

Abstract

The invention discloses a backflow liquid gathering device, an intermittent bunched rectifying tower and a continuous bunched rectifying tower. The backflow liquid gathering device comprises a first barrel, a liquid discharging pipe arranged on the inner side of the first barrel and at least two flow guide plates which are arranged on the inner side of the first barrel and are sequentially arranged in the circumferential direction. Wherein flow guide grooves which are inclined downwards from outside to inside in the radial direction are formed in the flow guide plates, the flow guide plates are used for receiving backflow liquid flowing down from the upper portion and enabling the backflow liquid to flow into the flow guide grooves, the lower end of each flow guide groove extends to the liquid discharging pipe, and a gas phase channel is formed between every two adjacent flow guide plates. According to the invention, reflux liquid flowing down from the upper part can be collected and is enabled to flow downwards after being converged, upward flowing of a gas-phase component is not hindered, the gas-phase component can flow upwards smoothly, the contact exchange efficiency of the gas-phase component and a liquid-phase component is improved, and the gas-phase component and the liquid-phase component are contacted and exchanged without mutual resistance.

Description

Technical Field

[0001] The invention relates to a reflux liquid gathering device, an intermittent cluster distillation tower and a continuous cluster distillation tower. Background Art

[0002] At present, a distillation tower is a tower-type vapor-liquid contact device, which can separate the liquid mixture by multiple vaporization and condensation using the difference in boiling points of each component in the liquid mixture. In the distillation tower, the liquid phase component flows downward and the gas phase component flows upward. During the flow process, the gas phase component and the liquid phase component are constantly in contact and exchanged. In order to improve the gas-liquid exchange efficiency of the distillation tower, multiple parallel tower tubes can be set in the distillation tower. For example, in the Chinese patent with announcement number CN216320037U, multiple tower tubes are set in parallel in the distillation tower. Since the diameter of the tower tube is small, the efficiency of gas-liquid exchange can be improved. And an equal distributor is set above the tower tube to distribute the reflux liquid equally to each tower tube. In addition, the reflux liquid flowing down from the tower tube needs to be collected below the tower tube so as to redistribute the collected reflux liquid. A Chinese patent with the announcement number CN221451742U discloses a distillation tower liquid collector, which can be used to collect the reflux liquid flowing down from the tower tube. However, when the distillation tower liquid collector is clamped on the inner wall of the distillation tower, the gas phase component below the distillation tower liquid collector can only pass through the first through hole, the second through hole and the third through hole and flow upward. Since the apertures of the first through hole, the second through hole and the third through hole are all small, this will seriously hinder the upward flow of the gas phase component, resulting in the gas phase component flowing upward unsmoothly, which will further affect the contact exchange efficiency between the gas phase component and the liquid phase component. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a reflux liquid gathering device, which can collect the reflux liquid flowing down from above and make the reflux liquid flow downward after converging, and will not hinder the upward flow of gas phase components. It can make the gas phase components flow upward smoothly, which is beneficial to improve the contact and exchange efficiency of gas phase components and liquid phase components, and make the gas-liquid two phases contact and exchange without obstructing each other.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a reflux liquid gathering device, comprising a first cylinder, a liquid discharge pipe arranged inside the first cylinder, and at least two guide plates arranged inside the first cylinder and arranged in sequence along the circumferential direction;

[0005] The guide plate is provided with a guide groove which is inclined downward from the outside to the inside in a radial direction, and the guide plate is used to receive the reflux liquid flowing down from the top and make the reflux liquid flow into the guide groove;

[0006] A lower end portion of the diversion groove extends to the drainage pipe so as to guide and gather the reflux liquid in the diversion groove into the drainage pipe;

[0007] Gas phase channels are provided between adjacent guide plates.

[0008] Furthermore, the outer end of the guide plate is connected to the first cylinder, and the inner end of the guide plate is connected to the upper end of the drain pipe.

[0009] Further, the guide plate is arranged at an angle;

[0010] The higher side of the guide plate extends above the lower side of the adjacent guide plate;

[0011] The gas phase channel is arranged between the higher edge of the guide plate and the lower edge of the adjacent guide plate;

[0012] The guide groove is arranged on the lower side of the guide plate.

[0013] Further, the guide plate includes a main plate and a side plate;

[0014] The main board is arranged obliquely, the side board is connected to the lower edge of the main board, and the guide groove is arranged between the side board and the main board;

[0015] The higher edge of the main plate in the guide plate extends above the adjacent side plate in the guide plate;

[0016] The gas phase channel is arranged between the higher edge of the main plate in the guide plate and the side plate in the adjacent guide plate.

[0017] Furthermore, the reflux liquid gathering device also includes a static mixer, and the static mixer is connected to the drain pipe.

[0018] Furthermore, the reflux liquid gathering device also includes a feed pipe passing through the first cylinder and the drain pipe, the inlet end of the feed pipe is located outside the first cylinder, and the outlet end of the feed pipe extends into the drain pipe.

[0019] Furthermore, the reflux liquid gathering device also includes a second cylinder and an equal amount distributor;

[0020] The upper end of the second cylinder is connected to the lower end of the first cylinder, and the first cylinder is in communication with the second cylinder;

[0021] The equal amount distributor is installed on the inner side of the second cylinder and is located below the liquid discharge pipe;

[0022] The equal amount distributor is provided with a receiving inner cavity for receiving the reflux liquid flowing out of the liquid discharge pipe;

[0023] The equal amount distributor is also provided with a plurality of guide pipes for discharging equal amounts of reflux liquid.

[0024] The present invention also provides an intermittent cluster distillation tower, comprising a tower cap, a reflux inlet pipe, a distribution tower section, an upper tower section, a lower tower section, a tower kettle and the reflux liquid gathering device;

[0025] The upper tower section includes an upper tower body and a plurality of upper tower tubes;

[0026] The lower tower section includes a lower tower body and a plurality of lower tower pipes;

[0027] The distribution tower section includes a distribution cylinder and a top distributor;

[0028] The tower cap is connected to the upper end of the distribution cylinder, the lower end of the distribution cylinder is connected to the upper end of the upper tower body, the lower end of the upper tower body is connected to the upper end of the first cylinder, the lower end of the second cylinder is connected to the upper end of the lower tower body, and the lower end of the lower tower body is connected to the tower kettle;

[0029] The tower cap is provided with a gas phase outlet, and the reflux input pipe extends into the tower cap and is used to receive the reflux liquid;

[0030] The top distributor is installed in the distribution cylinder and is located below the reflux input pipe. The top distributor is provided with a receiving inner cavity for receiving the reflux liquid flowing out of the reflux input pipe. The top distributor is also provided with a plurality of shunt pipes for discharging the reflux liquid in equal amounts.

[0031] The upper tower tubes are arranged in parallel in the upper tower body and arranged vertically, the upper tower tubes correspond to the diversion tubes in the top distributor one by one, the upper tower tubes are located below the corresponding diversion tubes and are aligned with the corresponding diversion tubes so that the reflux liquid flowing out of the diversion tubes falls into the corresponding upper tower tubes;

[0032] The upper tower pipe is also located above the guide plate so that the reflux liquid falling from the upper tower pipe falls on the guide plate;

[0033] The lower tower pipes are arranged in parallel in the lower tower body and in a vertical direction. The lower tower pipes correspond one to one with the guide pipes in the equal amount distributor. The lower tower pipes are located below the corresponding guide pipes and are aligned with the corresponding guide pipes so that the reflux liquid flowing out of the guide pipes falls into the corresponding lower tower pipes.

[0034] The present invention also provides a continuous bundled distillation tower, comprising a distillation tower section, a stripping tower section and the reflux liquid gathering device;

[0035] The distillation tower section includes a first tower body and a plurality of first tower tubes;

[0036] The stripping tower section includes a second tower body and a plurality of second tower tubes;

[0037] The lower end of the first tower body is connected to the upper end of the first cylinder body, and the upper end of the second tower body is connected to the lower end of the second cylinder body;

[0038] The first tower tubes are arranged in parallel in the first tower body and arranged vertically, and the first tower tubes are located above the guide plate so that the reflux liquid falling from the first tower tubes falls on the guide plate;

[0039] The second tower tubes are arranged in parallel in the second tower body and in a vertical direction. The second tower tubes correspond one to one with the guide tubes in the equal amount distributor. The second tower tubes are located below the corresponding guide tubes and aligned with the corresponding guide tubes so that the reflux liquid flowing out of the guide tubes falls into the corresponding second tower tubes.

[0040] After adopting the above technical solution, after the guide plate receives the reflux liquid flowing down from the tower tube above, the reflux liquid will flow along the guide plate into the guide groove, and then converge along the guide groove to flow into the drain pipe, and then continue to flow downward from the drain pipe, while the gas phase component below can pass through the gas phase channel and then flow upward. Among them, the reflux liquid is a liquid phase component, and the reflux liquid gathering device of the embodiment of the present application can collect the reflux liquid flowing down from above and make the reflux liquid converge into the drain pipe and then flow downward, and will not hinder the gas phase component below from flowing upward, and can make the gas phase component flow upward smoothly, and can make the gas-liquid two phases contact and exchange at the guide plate without blocking each other, which is beneficial to improve the contact and exchange efficiency of the gas phase component and the liquid phase component. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic structural diagram of the reflux liquid gathering device in the first embodiment of the present invention;

[0042] Figure 2 It is a schematic structural diagram of the reflux liquid gathering device in the second embodiment of the present invention;

[0043] Figure 3 It is a schematic diagram of the external structure of the first cylinder, the liquid discharge pipe and the guide plate of the present invention;

[0044] Figure 4 It is a schematic diagram of the internal structure of the first cylinder, the liquid discharge pipe and the guide plate of the present invention;

[0045] Figure 5 It is a schematic structural diagram of the liquid discharge pipe and the guide plate of the present invention;

[0046] Figure 6 It is a structural schematic diagram of the second cylinder and the equal amount distributor of the present invention;

[0047] Figure 7 It is a schematic structural diagram of an intermittent cluster distillation tower of the present invention;

[0048] Figure 8 for Figure 7 Sectional view at point A;

[0049] Fig. 9 for Figure 7 Sectional view at B in the middle;

[0050] Fig.10 for Figure 7 Sectional view at CC;

[0051] Fig.11 for Figure 7 Sectional view at DD in the middle;

[0052] Fig.12 It is a schematic structural diagram of the continuous cluster distillation tower of the present invention. DETAILED DESCRIPTION

[0053] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0054] Embodiment 1

[0055] like Figure 1 , 3 As shown in , 4 and 5, a reflux liquid gathering device comprises a first cylinder 1, a liquid discharge pipe 2 arranged inside the first cylinder 1 and at least two guide plates 3 arranged inside the first cylinder 1 and arranged in sequence along the circumferential direction;

[0056] The guide plate 3 is provided with a guide groove 4 which is inclined downward from the outside to the inside in a radial direction, and the guide plate 3 is used to receive the reflux liquid flowing down from the top and make the reflux liquid flow into the guide groove 4;

[0057] A lower end portion of the guide groove 4 extends to the drain pipe 2 so as to guide the reflux liquid in the guide groove 4 to the drain pipe 2;

[0058] A gas phase channel 5 is provided between adjacent guide plates 3. Specifically, after the guide plate 3 receives the reflux liquid flowing down from the tower tube above, the reflux liquid will flow along the guide plate 3 to the guide groove 4, and then converge along the guide groove 4 to flow into the drain pipe 2, and then continue to flow downward from the drain pipe 2, while the gas phase component below can pass through the gas phase channel 5 and then flow upward. Among them, the reflux liquid is a liquid phase component, and the reflux liquid gathering device of the embodiment of the present application can collect the reflux liquid flowing down from above and make the reflux liquid converge into the drain pipe 2 and then flow downward, and will not hinder the gas phase component below from flowing upward, and can make the gas phase component flow upward smoothly, and can make the gas-liquid two phases contact and exchange at the guide plate 3 without blocking each other, which is beneficial to improve the contact and exchange efficiency of the gas phase component and the liquid phase component.

[0059] like Figure 1 , 3 As shown in Figures 4 and 5, the outer end of the guide plate 3 is connected to the first cylinder 1, and the inner end of the guide plate 3 is connected to the upper end of the drain pipe 2; specifically, the drain pipe 2 is vertically arranged at the center of the first cylinder 1, and the outer end of the guide plate 3 is connected to the inner wall of the first cylinder 1.

[0060] like Figure 1 , 3 As shown in , 4 and 5, the guide plate 3 is arranged obliquely;

[0061] The higher side of the guide plate 3 extends to above the lower side of the adjacent guide plate 3;

[0062] The gas phase channel 5 is provided between the higher edge of the guide plate 3 and the lower edge of the adjacent guide plate 3;

[0063] The guide groove 4 is arranged on the lower side of the guide plate 3 .

[0064] like Figure 1 , 3 As shown in , 4 and 5, the guide plate 3 may include a main plate 6 and a side plate 7;

[0065] The main board 6 is tilted, the side board 7 is connected to the lower edge of the main board 6, and the guide groove 4 is provided between the side board 7 and the main board 6;

[0066] The higher edge of the main plate 6 in the guide plate 3 extends to above the adjacent side plate 7 in the guide plate 3;

[0067] The gas phase channel 5 is arranged between the higher edge of the main board 6 in the guide plate 3 and the side plate 7 in the adjacent guide plate 3; specifically, the side plate 7 is connected to the main board 6 in a V shape; wherein the higher edge of the guide plate 3 is the higher edge of the main board 6, and the lower edge of the guide plate 3 includes the lower edge of the main board 6 and the side plate 7.

[0068] In this embodiment, the upper end of the drain pipe 2 is provided with a plurality of sawtooth grooves 38 distributed in sequence along the circumferential direction, and the sawtooth grooves 38 correspond to the guide plate 3 one by one. The inner ends of the main plate 6 and the inner ends of the side plates 7 in the guide plate 3 are both connected to the corresponding sawtooth grooves 38, and the outer ends of the main plate 6 and the outer ends of the side plates 7 in the guide plate 3 are both connected to the inner wall of the first cylinder 1, and the guide plate 3 is a fan-shaped structure as a whole. Specifically, the upper end and the lower end of the first cylinder 1 are respectively provided with flange parts.

[0069] like Figure 1 , 3 As shown in Figures 4 and 5, the reflux liquid gathering device may further include a static mixer 8, and the static mixer 8 is connected to the drain pipe 2 so that the reflux liquid flowing into the drain pipe 2 is mixed evenly before flowing downward.

[0070] like Figure 1 , 6 As shown, the reflux liquid gathering device may further include a second cylinder 10 and an equal amount distributor 11;

[0071] The upper end of the second cylinder 10 is connected to the lower end of the first cylinder 1, and the first cylinder 1 is connected to the second cylinder 10;

[0072] The equal volume distributor 11 is installed inside the second cylinder 10 and is located below the liquid discharge pipe 2;

[0073] The equal amount distributor 11 is provided with a receiving inner cavity 12 for receiving the reflux liquid flowing out of the drain pipe 2;

[0074] The equal-amount distributor 11 is also provided with a plurality of guide pipes 13 for discharging reflux liquid in equal amounts; specifically, the equal-amount distributor 11 is connected to the second cylinder 10, and the specific structure of the equal-amount distributor 11 is the prior art well known to those skilled in the art, and specific reference may be made to the automatic equal-amount distributor 11 for bundled distillation reflux liquid disclosed in the Chinese patent publication number CN206152377U.

[0075] Embodiment 2

[0076] like Figures 2 to 5As shown, a reflux liquid gathering device comprises a first cylinder 1, a liquid discharge pipe 2 arranged inside the first cylinder 1, and at least two guide plates 3 arranged inside the first cylinder 1 and arranged in sequence along the circumferential direction;

[0077] The guide plate 3 is provided with a guide groove 4 which is inclined downward from the outside to the inside in a radial direction, and the guide plate 3 is used to receive the reflux liquid flowing down from the top and make the reflux liquid flow into the guide groove 4;

[0078] A lower end portion of the guide groove 4 extends to the drain pipe 2 so as to guide the reflux liquid in the guide groove 4 to the drain pipe 2;

[0079] A gas phase channel 5 is provided between adjacent guide plates 3. Specifically, after the guide plate 3 receives the reflux liquid flowing down from the tower tube above, the reflux liquid will flow along the guide plate 3 to the guide groove 4, and then converge along the guide groove 4 to flow into the drain pipe 2, and then continue to flow downward from the drain pipe 2, while the gas phase component below can pass through the gas phase channel 5 and then flow upward. Among them, the reflux liquid is a liquid phase component, and the reflux liquid gathering device of the embodiment of the present application can collect the reflux liquid flowing down from above and make the reflux liquid converge into the drain pipe 2 and then flow downward, and will not hinder the gas phase component below from flowing upward, and can make the gas phase component flow upward smoothly, and can make the gas-liquid two phases contact and exchange at the guide plate 3 without blocking each other, which is beneficial to improve the contact and exchange efficiency of the gas phase component and the liquid phase component.

[0080] like Figures 2 to 5 As shown, the outer end of the guide plate 3 is connected to the first cylinder 1, and the inner end of the guide plate 3 is connected to the upper end of the drain pipe 2; specifically, the drain pipe 2 is vertically arranged at the center of the first cylinder 1, and the outer end of the guide plate 3 is connected to the inner wall of the first cylinder 1.

[0081] like Figures 2 to 5 As shown, the guide plate 3 is arranged obliquely;

[0082] The higher side of the guide plate 3 extends to above the lower side of the adjacent guide plate 3;

[0083] The gas phase channel 5 is provided between the higher edge of the guide plate 3 and the lower edge of the adjacent guide plate 3;

[0084] The guide groove 4 is arranged on the lower side of the guide plate 3 .

[0085] like Figures 2 to 5 As shown, the guide plate 3 may include a main plate 6 and a side plate 7;

[0086] The main board 6 is tilted, the side board 7 is connected to the lower edge of the main board 6, and the guide groove 4 is provided between the side board 7 and the main board 6;

[0087] The higher edge of the main plate 6 in the guide plate 3 extends to above the adjacent side plate 7 in the guide plate 3;

[0088] The gas phase channel 5 is arranged between the higher edge of the main board 6 in the guide plate 3 and the side plate 7 in the adjacent guide plate 3; specifically, the side plate 7 is connected to the main board 6 in a V shape; wherein the higher edge of the guide plate 3 is the higher edge of the main board 6, and the lower edge of the guide plate 3 includes the lower edge of the main board 6 and the side plate 7.

[0089] In this embodiment, the upper end of the drain pipe 2 is provided with a plurality of sawtooth grooves 38 distributed in sequence along the circumferential direction, and the sawtooth grooves 38 correspond to the guide plate 3 one by one. The inner ends of the main plate 6 and the inner ends of the side plates 7 in the guide plate 3 are both connected to the corresponding sawtooth grooves 38, and the outer ends of the main plate 6 and the outer ends of the side plates 7 in the guide plate 3 are both connected to the inner wall of the first cylinder 1, and the guide plate 3 is a fan-shaped structure as a whole. Specifically, the upper end and the lower end of the first cylinder 1 are respectively provided with flange parts.

[0090] like Figures 2 to 5 As shown, the reflux liquid gathering device may further include a static mixer 8, and the static mixer 8 is connected to the drain pipe 2 so that the reflux liquid flowing into the drain pipe 2 is mixed evenly before flowing downward.

[0091] like Figure 2 , 6 As shown, the reflux liquid gathering device may further include a second cylinder 10 and an equal amount distributor 11;

[0092] The upper end of the second cylinder 10 is connected to the lower end of the first cylinder 1, and the first cylinder 1 is connected to the second cylinder 10;

[0093] The equal volume distributor 11 is installed inside the second cylinder 10 and is located below the liquid discharge pipe 2;

[0094] The equal amount distributor 11 is provided with a receiving inner cavity 12 for receiving the reflux liquid flowing out of the drain pipe 2;

[0095] The equal-amount distributor 11 is also provided with a plurality of guide pipes 13 for discharging reflux liquid in equal amounts; specifically, the equal-amount distributor 11 is connected to the second cylinder 10, and the specific structure of the equal-amount distributor 11 is the prior art well known to those skilled in the art, and specific reference may be made to the automatic equal-amount distributor 11 for bundled distillation reflux liquid disclosed in the Chinese patent publication number CN206152377U.

[0096] like Figure 2 As shown, the reflux liquid gathering device also includes a feed pipe 9 passing through the first cylinder 1 and the drain pipe 2 , the inlet end of the feed pipe 9 is located outside the first cylinder 1 , and the outlet end of the feed pipe 9 extends into the drain pipe 2 .

[0097] Embodiment 3

[0098] like Figures 7 to 11 As shown, an intermittent cluster distillation tower comprises a tower cap 14, a reflux inlet pipe 15, a distribution tower section 16, an upper tower section 17, a lower tower section 18, a tower bottom 19 and a reflux liquid gathering device 100 as described in Example 1;

[0099] The upper tower section 17 includes an upper tower body 20 and a plurality of upper tower tubes 21;

[0100] The lower tower section 18 includes a lower tower body 22 and a plurality of lower tower pipes 23;

[0101] The distribution tower section 16 includes a distribution cylinder 24 and a top distributor 25;

[0102] The tower cap 14 is connected to the upper end of the distribution cylinder 24, the lower end of the distribution cylinder 24 is connected to the upper end of the upper tower body 20, the lower end of the upper tower body 20 is connected to the upper end of the first cylinder 1, the lower end of the second cylinder 10 is connected to the upper end of the lower tower body 22, the lower end of the lower tower body 22 is connected to the tower bottom 19, and the tower cap 14, the distribution cylinder 24, the upper tower body 20, the first cylinder 1, the second cylinder 10, the lower tower body 22 and the tower bottom 19 are connected in sequence;

[0103] The tower cap 14 is provided with a gas phase outlet 26, and the tower cap 14 is also provided with a baffle 27 located below the gas phase outlet 26. The reflux inlet pipe 15 extends into the tower cap 14 and is used to receive the reflux liquid.

[0104] The top distributor 25 is installed in the distribution cylinder 24 and is located below the reflux input pipe 15. The top distributor 25 is provided with a receiving inner cavity 28 for receiving the reflux liquid flowing out of the reflux input pipe 15. The top distributor 25 is also provided with a plurality of shunt pipes 29 for discharging the reflux liquid in equal amounts. Specifically, the specific structure of the top distributor 25 is the prior art well known to those skilled in the art, and specific reference may be made to the automatic top distributor 25 for the reflux liquid of the bundle distillation disclosed in the Chinese patent publication number CN206152377U.

[0105] The upper tower pipes 21 are arranged in parallel in the upper tower body 20 and arranged vertically, and the upper tower pipes 21 correspond to the branch pipes 29 in the top distributor 25 one by one. The upper tower pipes 21 are located below the corresponding branch pipes 29 and are aligned with the corresponding branch pipes 29 so that the reflux liquid flowing out of the branch pipes 29 falls into the corresponding upper tower pipes 21;

[0106] The upper tower pipe 21 is also located above the guide plate 3 so that the reflux liquid falling from the upper tower pipe 21 falls on the guide plate 3;

[0107] The lower tower pipes 23 are arranged in parallel in the lower tower body 22 and arranged vertically. The lower tower pipes 23 correspond to the guide pipes 13 in the equal-amount distributor 11 one by one. The lower tower pipes 23 are located below the corresponding guide pipes 13 and are aligned with the corresponding guide pipes 13 so that the reflux liquid flowing out of the guide pipes 13 falls into the corresponding lower tower pipes 23.

[0108] The upper tower tube 21 and the lower tower tube 23 are both filled with fillers, the space between the upper tower tube 21 and the upper tower body 20 and between the lower tower tube 23 and the lower tower body 22 are both filled with heat insulation materials, and the bottom of the upper tower tube 21 and the bottom of the lower tower tube 23 are both installed with supporting flower plates for holding the fillers.

[0109] Specifically, it also includes a condenser 30 and a magnetically sealed reflux liquid distributor 31, the inlet of the condenser 30 is connected to the gas phase outlet 26, the outlet of the condenser 30 is connected to the magnetically sealed reflux liquid distributor 31, and one of the outlets of the magnetically sealed reflux liquid distributor 31 is connected to the reflux input pipe 15. After the material in the tower kettle 19 is heated, the gas phase component flows upward into the lower tower tube 23, then passes through the lower tower tube 23 and flows upward into the second cylinder 10 and then flows into the first cylinder 1. The gas phase component in the first cylinder 1 passes through the gas phase channel 5 and then flows upward into the upper tower tube 21 and then passes through the upper tower tube 21 and then continues to flow upward into the distribution cylinder 24, and then flows into the tower cap 14, so the upward flow of the gas phase component will not be hindered. Then the gas phase component flows from the gas phase outlet 26 into the condenser 30 to be condensed and liquefied, and then the liquid flows through the magnetic seal reflux liquid distributor 31 and flows into the reflux input pipe 15. The reflux liquid flowing out of the reflux input pipe 15 falls into the receiving cavity 28 in the top distributor 25. The top distributor 25 can make the reflux liquid in the receiving cavity 28 be equally diverted and then discharged equally from each diversion pipe 29 and distributed to each upper tower pipe 21. The reflux liquid in the upper tower pipe 21 flows downward and then falls on the guide plate 3. After the guide plate 3 receives the reflux liquid, it flows along the guide plate 3 into the guide groove 4. Then the reflux liquid in the guide groove 4 converges and flows into the drain pipe 2. Then the reflux liquid in the drain pipe 2 flows through the static mixer 8 to be evenly mixed and then falls into the receiving cavity 12 in the equal distributor 11. The equal distributor 11 can make the reflux liquid in the receiving cavity 12 be equally divided and then be equally discharged from each guide pipe 13 and distributed to each lower tower pipe 23. The reflux liquid in the lower tower pipe 23 flows downward again. More specifically, the reflux liquid gathering device 100 can realize the automatic collection of reflux liquid in each upper tower tube 21 and automatically distribute the collected reflux liquid to each lower tower tube 23 in equal amounts, and can also make the gas phase component below pass through the gas phase channel 5 and flow upward, so that the gas-liquid two-phase can exchange and contact in the reflux liquid gathering device 100 without blocking each other. Among them, the equal distribution of reflux liquid to each upper tower tube 21 is conducive to making the gas-liquid exchange efficiency in each upper tower tube 21 tend to be consistent, and then it is conducive to maximizing the overall gas-liquid exchange efficiency; similarly, the equal distribution of reflux liquid to each lower tower tube 23 is conducive to making the gas-liquid exchange efficiency in each lower tower tube 23 tend to be consistent, and then it is conducive to maximizing the overall gas-liquid exchange efficiency. Since the calibers of the upper tower tube 21 and the lower tower tube 23 are both small, it is conducive to improving the gas-liquid exchange efficiency in the intermittent cluster distillation tower, obtaining a higher theoretical plate number, and then it can reduce the overall tower height and reduce operating costs.

[0110] Embodiment 4

[0111] like Fig.12 As shown, a continuous bundle distillation tower comprises a distillation tower section 32, a stripping tower section 33 and a reflux liquid gathering device 100 as described in Example 2;

[0112] The distillation tower section 32 includes a first tower body 34 and a plurality of first tower tubes 35;

[0113] The stripping tower section 33 includes a second tower body 36 and a plurality of second tower tubes 37;

[0114] The lower end of the first tower body 34 is connected to the upper end of the first cylinder 1, the upper end of the second tower body 36 is connected to the lower end of the second cylinder 10, and the first tower body 34, the first cylinder 1, the second cylinder 10 and the second tower body 36 are connected in sequence;

[0115] The first tower pipes 35 are arranged in parallel in the first tower body 34 and arranged vertically, and the first tower pipes 35 are located above the guide plate 3 so that the reflux liquid falling from the first tower pipes 35 falls on the guide plate 3;

[0116] The second tower pipes 37 are arranged in parallel in the second tower body 36 and arranged vertically. The second tower pipes 37 correspond to the guide pipes 13 in the equal-amount distributor 11 one by one. The second tower pipes 37 are located below the corresponding guide pipes 13 and are aligned with the corresponding guide pipes 13 so that the reflux liquid flowing out of the guide pipes 13 falls into the corresponding second tower pipes 37.

[0117] The first tower tube 35 and the second tower tube 37 are both filled with fillers, the space between the first tower tube 35 and the first tower body 34 and between the second tower tube 37 and the second tower body 36 are both filled with insulation materials, and the bottom of the first tower tube 35 and the bottom of the second tower tube 37 are both installed with supporting panels for supporting the fillers.

[0118] Specifically, during normal operation, the reflux liquid in the first tower tube 35 will flow downward and fall on the guide plate 3. After receiving the reflux liquid, the guide plate 3 allows the reflux liquid to flow along the guide plate 3 to the guide groove 4. The reflux liquid in the guide groove 4 then converges and flows into the drain pipe 2. The reflux liquid in the drain pipe 2 flows through the static mixer 8 and is evenly mixed and then falls into the receiving inner cavity 12 in the equal distributor 11. The equal distributor 11 can make the reflux liquid in the receiving inner cavity 12 equally divided and then equally discharged from each guide tube 13 and distributed to each second tower tube 37. The reflux liquid in the second tower tube 37 flows downward again. In addition, the gas phase component in the second tower tube 37 flows upward to the second cylinder 10 and then flows into the first cylinder 1. The gas phase component in the first cylinder 1 flows upward into the first tower tube 35 after passing through the gas phase channel 5 and then continues to flow upward, so the upward flow of the gas phase component will not be hindered. More specifically, the reflux liquid gathering device 100 can realize the automatic collection of the reflux liquid in each first tower tube 35 and automatically distribute the collected reflux liquid to each second tower tube 37 in equal amounts, and can also make the gas phase component below pass through the gas phase channel 5 and flow upward, so that the gas-liquid two phases can exchange and contact in the reflux liquid gathering device 100 without blocking each other. Among them, the equal distribution of the reflux liquid to each second tower tube 37 is conducive to making the gas-liquid exchange efficiency in each second tower tube 37 tend to be consistent, which is conducive to maximizing the overall gas-liquid exchange efficiency, which is conducive to reducing the overall tower height, reducing equipment investment and operating costs, and saving energy consumption. In addition, in this embodiment, the material is fed into the discharge pipe 2 from the feed pipe 9. The material in the discharge pipe 2 flows through the static mixer 8 and is evenly mixed, and then falls into the receiving inner cavity 12 in the equal distributor 11. In the equal distributor 11, the material is equally divided and then discharged from each guide pipe 13 and then equally distributed to each of the second tower tubes 37.

[0119] In summary, after the guide plate 3 receives the reflux liquid flowing down from the tower tube above, the reflux liquid will flow along the guide plate 3 to the guide groove 4, and then flow into the drainage pipe 2 along the guide groove 4, and then continue to flow downward from the drainage pipe 2, while the gas phase component below can pass through the gas phase channel 5 and then flow upward. Among them, the reflux liquid is a liquid phase component, and the reflux liquid gathering device of the embodiment of the present application can collect the reflux liquid flowing down from above and make the reflux liquid converge into the drainage pipe 2 and then flow downward, and will not hinder the gas phase component below from flowing upward, and can make the gas phase component flow upward smoothly, and can make the gas-liquid two phases contact and exchange at the guide plate 3 without blocking each other, which is beneficial to improve the contact and exchange efficiency of the gas phase component and the liquid phase component.

[0120] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A reflux liquid gathering device, characterized in that: It comprises a first cylinder (1), a liquid discharge pipe (2) arranged on the inner side of the first cylinder (1), and at least two guide plates (3) arranged on the inner side of the first cylinder (1) and arranged in sequence along the circumferential direction; The guide plate (3) is provided with a guide groove (4) which is inclined downward from the outside to the inside in a radial direction, and the guide plate (3) is used to receive the reflux liquid flowing down from the top and make the reflux liquid flow into the guide groove (4); A lower end portion of the guide groove (4) extends to the drainage pipe (2) so as to guide and converge the reflux liquid in the guide groove (4) into the drainage pipe (2); Gas phase channels (5) are provided between adjacent guide plates (3).

2. The reflux liquid collection device according to claim 1, characterized in that: The outer end of the guide plate (3) is connected to the first cylinder (1), and the inner end of the guide plate (3) is connected to the upper end of the liquid discharge pipe (2).

3. The reflux liquid collection device according to claim 1, characterized in that: The guide plate (3) is arranged obliquely; The higher edge of the guide plate (3) extends above the lower edge of the adjacent guide plate (3); The gas phase channel (5) is arranged between a higher edge of the guide plate (3) and a lower edge of an adjacent guide plate (3); The guide groove (4) is arranged on the lower edge of the guide plate (3).

4. The reflux liquid collection device according to claim 3, characterized in that: The guide plate (3) comprises a main plate (6) and a side plate (7); The main board (6) is arranged obliquely, the side board (7) is connected to the lower edge of the main board (6), and the guide groove (4) is arranged between the side board (7) and the main board (6); The higher edge of the main plate (6) in the guide plate (3) extends above the side plate (7) in the adjacent guide plate (3); The gas phase channel (5) is arranged between the higher edge of the main plate (6) in the guide plate (3) and the side plate (7) in the adjacent guide plate (3).

5. The reflux liquid collection device according to claim 1, characterized in that: It also comprises a static mixer (8), wherein the static mixer (8) is connected in the liquid discharge pipe (2).

6. The reflux liquid collection device according to claim 1, characterized in that: It also includes a feed pipe (9) passing through the first cylinder (1) and the liquid discharge pipe (2), wherein the inlet end of the feed pipe (9) is located outside the first cylinder (1), and the outlet end of the feed pipe (9) extends into the liquid discharge pipe (2).

7. The reflux liquid collection device according to claim 1, characterized in that: It also includes a second cylinder (10) and an equal amount distributor (11); The upper end of the second cylinder (10) is connected to the lower end of the first cylinder (1), and the first cylinder (1) is in communication with the second cylinder (10); The equal volume distributor (11) is installed on the inner side of the second cylinder (10) and is located below the liquid discharge pipe (2); The equal volume distributor (11) is provided with a receiving inner cavity (12) for receiving the reflux liquid flowing out of the liquid discharge pipe (2); The equal-amount distributor (11) is also provided with a plurality of guide pipes (13) for discharging equal amounts of reflux liquid.

8. The reflux liquid collection device according to claim 7, characterized in that: It also includes a feed pipe (9) passing through the first cylinder (1) and the liquid discharge pipe (2), wherein the inlet end of the feed pipe (9) is located outside the first cylinder (1), and the outlet end of the feed pipe (9) extends into the liquid discharge pipe (2).

9. An intermittent cluster distillation tower, characterized in that: It comprises a tower cap (14), a reflux inlet pipe (15), a distribution tower section (16), an upper tower section (17), a lower tower section (18), a tower kettle (19) and a reflux liquid gathering device (100) as claimed in claim 7; The upper tower section (17) comprises an upper tower body (20) and a plurality of upper tower tubes (21); The lower tower section (18) comprises a lower tower body (22) and a plurality of lower tower pipes (23); The distribution tower section (16) comprises a distribution cylinder (24) and a top distributor (25); The tower cap (14) is connected to the upper end of the distribution cylinder (24), the lower end of the distribution cylinder (24) is connected to the upper end of the upper tower body (20), the lower end of the upper tower body (20) is connected to the upper end of the first cylinder (1), the lower end of the second cylinder (10) is connected to the upper end of the lower tower body (22), and the lower end of the lower tower body (22) is connected to the tower kettle (19); The tower cap (14) is provided with a gas phase outlet (26), and the reflux inlet pipe (15) extends into the tower cap (14) and is used to receive the reflux liquid; The top distributor (25) is installed in the distribution cylinder (24) and is located below the reflux input pipe (15). The top distributor (25) is provided with a receiving inner cavity (28) for receiving the reflux liquid flowing out of the reflux input pipe (15). The top distributor (25) is also provided with a plurality of diversion pipes (29) for discharging the reflux liquid in equal amounts. The upper tower pipes (21) are arranged in parallel in the upper tower body (20) and arranged vertically, the upper tower pipes (21) correspond one to one with the branch pipes (29) in the top distributor (25), the upper tower pipes (21) are located below the corresponding branch pipes (29) and are aligned with the corresponding branch pipes (29) so that the reflux liquid flowing out of the branch pipes (29) falls into the corresponding upper tower pipes (21); The upper tower pipe (21) is also located above the guide plate (3) so that the reflux liquid falling from the upper tower pipe (21) falls on the guide plate (3); The lower tower pipes (23) are arranged in parallel in the lower tower body (22) and arranged in a vertical direction. The lower tower pipes (23) correspond one to one with the flow guide pipes (13) in the equal-amount distributor (11). The lower tower pipes (23) are located below the corresponding flow guide pipes (13) and are aligned with the corresponding flow guide pipes (13) so that the reflux liquid flowing out of the flow guide pipes (13) falls into the corresponding lower tower pipes (23).

10. A continuous cluster distillation tower, characterized in that: It comprises a rectifying tower section (32), a stripping tower section (33) and a reflux liquid gathering device (100) as claimed in claim 8; The distillation tower section (32) includes a first tower body (34) and a plurality of first tower tubes (35); The stripping tower section (33) includes a second tower body (36) and a plurality of second tower tubes (37); The lower end of the first tower body (34) is connected to the upper end of the first cylinder (1), and the upper end of the second tower body (36) is connected to the lower end of the second cylinder (10); The first tower tubes (35) are arranged in parallel in the first tower body (34) and arranged vertically, and the first tower tubes (35) are located above the guide plate (3) so that the reflux liquid falling from the first tower tubes (35) falls on the guide plate (3); The second tower pipes (37) are arranged in parallel in the second tower body (36) and arranged vertically. The second tower pipes (37) correspond one to one with the flow guide pipes (13) in the equal-amount distributor (11). The second tower pipes (37) are located below the corresponding flow guide pipes (13) and are aligned with the corresponding flow guide pipes (13) so that the reflux liquid flowing out of the flow guide pipes (13) falls into the corresponding second tower pipes (37).

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