A sectional distillation tower with high working efficiency

Abstract

The present invention belongs to the technical field of distillation towers, and specifically is a segmented distillation tower with high working efficiency, comprising a tower base; a plurality of tower bodies are fixedly connected to the top of the tower base, and the plurality of tower bodies are connected by flanges; a tower top is fixedly connected to the top of the tower body; a plurality of tower plates are fixedly connected to the inside of the tower body; a downcomer is fixedly connected between the tower plates and the inner wall of the tower body; a plurality of through holes are evenly provided on the surface of the tower plates; a slag stopper is fixedly connected to the position of the tower plate surface corresponding to the through holes; an annular groove is provided on the inner surface of the slag stopper; the liquid impurities adhered to the surface of the tower plate are pushed by the liquid to accumulate on the surface of the slag stopper and cannot flow directly into the through hole; a small amount of impurities entering the slag stopper will form droplets at the notch of the annular groove, and the impurities will be blown out of the slag stopper by gas, thereby reducing the situation where the through holes are blocked when the distillation tower is processing liquid with higher viscosity. The distillation tower has a high production capacity for a long time, which improves the working efficiency of the distillation tower.

Description

Technical Field

[0001] The invention belongs to the technical field of distillation towers, in particular to a sectional distillation tower with high working efficiency. Background Art

[0002] A distillation tower is a device that utilizes the differences in volatilization conditions of the components in a mixture to transfer the light components in the liquid phase to the heavy components to achieve separation of the components. After multiple contacts between the gas and the liquid in the distillation tower, the concentration of the condensed liquid is very high, thereby obtaining a high-purity product. The sieve plate type in the distillation tower is widely used due to its large processing capacity, simple structure and low cost.

[0003] A Chinese patent, publication number CN105457324B, discloses a baffled distillation tower comprising: a tower body; baffles disposed upright within the tower body, defining a baffle section between upper and lower edges of the baffles; and a liquid distributor disposed within the baffle section, characterized in that the liquid distributor is secured only to the tower body and not to the baffles. This baffled distillation tower minimizes or even avoids problems associated with conventional baffled distillation towers, such as improper distribution of liquid across mass transfer elements caused by manufacturing defects in the baffles and deformation of the baffles under operating conditions.

[0004] When a distillation tower with sieve-hole trays processes a highly viscous feed liquid or a feed liquid mixed with particles, the sieve holes on the trays are easily blocked, which in turn affects the flow of gas, reduces the efficiency of mass and heat transfer between the gas and liquid on the trays, and thus reduces the quantity and quality of the product condensed at the top of the distillation tower, and the production efficiency of the distillation tower becomes lower.

[0005] To this end, the present invention provides a sectional distillation tower with high working efficiency. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the segmented distillation tower with high working efficiency described in the present invention includes a tower base; the top of the tower base is fixedly connected to multiple tower bodies, and the multiple tower bodies are connected by flanges; the top of the tower body is fixedly connected to a tower top; multiple tower plates are fixedly connected to the inside of the tower body; a downcomer is fixedly connected between the tower plates and the inner wall of the tower body; multiple through holes are evenly opened on the surface of the tower plate; a slag stop pipe is fixedly connected to the position of the tower plate surface corresponding to the through holes; an annular groove is opened on the inner surface of the slag stop pipe near the pipe mouth; when the distillation tower processes a liquid with high viscosity or a liquid with particles, the through holes on the tower plates often become clogged, requiring shutdown for maintenance, which seriously affects the working efficiency of the distillation tower. Since the liquid with high viscosity will first adhere to the surface of the tower plate, the impurity liquid adhered to the tower plate becomes thicker as the liquid flows, and flows into the inner wall of the through hole when passing through the through hole. As the viscosity of the inflowing liquid increases, the through hole is gradually blocked, making it difficult for the gas to flow out of the through hole. , reducing the working efficiency of the distillation tower, through the slag retaining pipe, the feed liquid impurities adhered to the surface of the tower plate cannot flow directly into the through hole, the adhered impurity feed liquid will be attached to the outer surface of the slag retaining pipe under the push of the feed liquid, only the feed liquid passing through the pipe mouth of the slag retaining pipe will have some residual feed liquid enter the slag retaining pipe, the adhered feed liquid gathers on the inner wall after flowing into the slag retaining pipe, and will gradually move downward as the feed liquid increases. When passing through the annular groove, the impurity feed liquid will form droplets at the notch position of the annular groove due to the sudden depression of the pipe wall, At the same time, the gas flowing from bottom to top will enter the groove when passing through the annular groove, and then flow out along the groove. The impurity liquid will break away from the inner wall of the slag retaining tube and be blown out of the slag retaining tube under the action of the airflow. The setting of the slag retaining tube reduces the blockage of the through hole, so that the distillation tower can maintain a high production capacity for a long time when processing liquid with high viscosity or particles, thereby improving the working efficiency of the distillation tower. At the same time, the tower body composed of multiple sections makes the maintenance of the distillation tower more convenient and targeted.

[0008] Furthermore, a plurality of guide grooves are provided on the surface of the tower plate; due to the setting of the slag retaining pipe, a certain obstruction is formed to the flow of the feed liquid, which has a certain impact on the flow rate of the feed liquid. The guide grooves can promote the flow rate of the feed liquid on the tower plate. At the same time, the guide grooves increase the contact area between the feed liquid and the tower plate, improve the ability of the tower plate to adhere to impurities, and reduce the accumulation of impurities on the surface of the slag retaining pipe to a certain extent.

[0009] Furthermore, a side hole is provided on the surface of the slag retaining pipe on the side close to the downcomer; the slag retaining pipe makes the contact position of the gas and liquid away from the tower plate, and the contact time and mixing degree of the gas and liquid become lower. Through the side hole, part of the gas contacts the feed liquid close to the tower plate, which increases the contact area and contact time of the gas and feed liquid, makes the liquid and liquid mixing more thorough, and increases the mass exchange and heat exchange effect between the gas and liquid.

[0010] Furthermore, the outer surface of the slag stop tube is fixed with a connecting ring through a torsion spring; the connecting ring is fixed with a first baffle; the connecting ring is fixed with a first scraper; the first scraper and the first baffle are respectively located on both sides of the slag stop tube, and the surface of the first baffle is perpendicular to the direction of liquid flow; a cavity is provided inside the first scraper; a slag guide port is provided on the side of the cavity near the slag guide tube, and the slag guide port is close to the downcomer; the distillation tower works for a relatively long time, and a large amount of impurities are accumulated on the surface of the slag stop tube. When the distillation tower works for too long, the impurities flow from the bottom of the slag stop tube to the top, and then enter the inside of the slag stop tube The slag retaining pipe will still be blocked. In order to reduce the number of maintenance times, the impurities accumulated on the side of the slag retaining pipe away from the downcomer are cleaned up by the first scraper. During operation, when the feed liquid flows through the slag retaining pipe, it will push the first baffle to rotate, and the first scraper also rotates through the connection of the connecting ring. After the distillation tower completes a work, when the feed liquid stops flowing, the torsion spring resets the first baffle, and the first scraper also resets at the same time. When the first scraper rotates, it will sweep the surface of the slag retaining pipe, and the impurities will enter the inside of the first scraper from the slag guide port, reducing the impurities adhering to the surface of the slag retaining pipe, reducing the frequency of distillation tower maintenance, and saving usage costs.

[0011] Furthermore, a second baffle is fixedly connected to a side of the connecting ring close to the first baffle, and the second baffle is located between the first baffle and the first scraper; because the first baffle rotates around the slag guide pipe under the push of the slurry, as the rotation angle increases, the force of the slurry acting on the first baffle decreases, and at the same time the reaction force of the torsion spring also becomes larger, so that the rotation angle of the first scraper is smaller. Through the second baffle, when the first baffle rotates to the extreme position, the second baffle rotates to a position perpendicular to the flow direction of the slurry. Under the push of the slurry, the second baffle rotates, and the first scraper further rotates. When the distillation tower finishes working, the scraping range of the first scraper is larger, which further improves the scraping ability of the first scraper.

[0012] Furthermore, a slope is provided at the position of the slag guide port close to the slag blocking pipe; when the first scraper cleans the surface of the slag blocking pipe, the inclined slag guide port can guide the incoming impurities, so that the impurities can enter the cavity more easily.

[0013] Furthermore, the position of the slag guide port is close to the pipe mouth of the slag stopping pipe; since the impurities on the slag stopping pipe flow from the bottom of the slag stopping pipe to the pipe mouth, and then enter the slag stopping pipe, the impurities near the pipe mouth of the slag stopping pipe can be cleaned up to reduce the situation where the through hole is blocked by impurities. Since the space for storing impurities in the first scraper is limited, the time interval for cleaning the first scraper can be extended, the frequency of maintenance can be reduced, and the cost of maintenance can be reduced.

[0014] The cam is secured to the bottom of the chute and is secured to the chute's outer surface when the chute is in a closed position.

[0015] Furthermore, an L-shaped connecting rod is fixed to the top of the first scraper; a second scraper is fixed to the end of the L-shaped connecting rod; when the first scraper rotates, the second scraper also rotates through the connection of the L-shaped connecting rod, and the second scraper scrapes the inner surface of the slag blocking pipe, further reducing the possibility of the slag blocking pipe being blocked.

[0016] Furthermore, an elastic cloth is fixed between the sliding rod and the first scraper, and the elastic cloth covers the sliding hole; impurities adhering to the sliding rod will affect the sliding of the sliding rod, and may cause the sliding rod to get stuck, affecting the rotation of the first scraper. The elastic cloth reduces the amount of impurities adhering to the sliding rod, ensures the sliding effect of the sliding rod, and improves the stability of the device.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The high-efficiency segmented distillation tower described in the present invention provides a slag-blocking tube at the through hole to reduce the impurities adhering to the surface of the tower plate from flowing into the through hole, thereby reducing the possibility of the through hole on the tower plate being blocked, thereby ensuring that the through hole can always maintain a good air permeability effect, and a sufficient amount of gas can be sprayed out of the through hole to transfer mass and heat with the liquid, thereby ensuring that the tower plate is always in an efficient processing state.

[0019] 2. The present invention describes a high-efficiency segmented distillation tower, in which the first scraper is reset after the distillation tower is finished working by the force of the torsion spring, and impurities accumulated on the side of the slag retaining pipe facing the flow direction of the feed liquid are cleaned, so that the distillation tower can still maintain good air permeability of the tower plate after multiple operations, and the surface of the slag retaining pipe can accumulate impurities multiple times, greatly reducing the impurities adhering to the tower plate and flowing into the through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1It is a perspective view of the present invention;

[0022] Figure 2 is a cross-sectional view of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the tower plate of the present invention;

[0024] Figure 4 is a cross-sectional view of the slag retaining pipe of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the third baffle in the present invention;

[0026] Figure 6 is a schematic structural diagram of the elastic cloth in the second embodiment of the present invention;

[0027] In the figure: 1. tower base; 11. tower body; 12. tower top; 13. tower plate; 14. through hole; 15. slag retaining pipe; 16. downcomer; 17. annular groove; 2. diversion groove; 3. side hole; 4. connecting ring; 41. first baffle; 42. first scraper; 43. cavity; 44. slag guide port; 5. second baffle; 6. inclined plane; 7. chute; 71. third baffle; 72. spring; 73. slide rod; 74. groove; 75. slide hole; 8. L-shaped connecting rod; 81. second scraper; 9. elastic cloth. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] Example 1

[0030] like Figures 1 to 2As shown, a high-efficiency segmented distillation tower according to an embodiment of the present invention comprises a tower base 1; a plurality of tower bodies 11 are fixedly connected to the top of the tower base 1, and the plurality of tower bodies 11 are connected by flanges; a tower top 12 is fixedly connected to the top of the tower body 11; a plurality of tower plates 13 are fixedly connected to the inside of the tower body 11; a downcomer 16 is fixedly connected between the tower plates 13 and the inner wall of the tower body 11; a plurality of through holes 14 are evenly opened on the surface of the tower plates 13; a slag retaining pipe 15 is fixedly connected to the position of the through holes 14 on the surface of the tower plates 13; the inner surface of the slag retaining pipe 15 is close to the pipe An annular groove 17 is provided at the position of the opening; when the distillation tower processes a liquid with high viscosity or a liquid with particles, the through hole 14 on the tower plate 13 is often blocked, and the tower needs to be shut down for maintenance, which seriously affects the working efficiency of the distillation tower. Since the liquid with high viscosity will first adhere to the surface of the tower plate 13, as the liquid flows, the impurity liquid adhered to the tower plate 13 becomes thicker, and when passing through the through hole 14, it flows into the inner wall of the through hole 14. As the viscosity of the inflowing liquid increases, the through hole 14 is gradually blocked, making it difficult for the gas to pass through the through hole 14. The slag-blocking pipe 15 prevents the liquid adhering to the surface of the tower plate 13 from flowing directly into the through-hole 14. The adhering impurity liquid will adhere to the outer surface of the slag-blocking pipe 15 under the push of the liquid. Only the liquid passing through the mouth of the slag-blocking pipe 15 will have some liquid remaining and enter the slag-blocking pipe 15. The adhering liquid will gather on the inner wall after flowing into the slag-blocking pipe 15. As the amount of liquid increases, it will gradually move downward. When passing through the annular groove 17, due to the sudden depression of the tube wall, the impurity liquid will form droplets at the notch position of the annular groove 17. At the same time, the gas flowing from bottom to top will enter the groove 74 when passing through the annular groove 17, and then flow out along the groove 74. The impurity liquid will break away from the inner wall of the slag blocking tube 15 and be blown out of the slag blocking tube 15 under the action of the airflow. The setting of the slag blocking tube 15 reduces the blockage of the through hole 14, so that the distillation tower can have a high production capacity for a long time when processing liquids with high viscosity or particles, thereby improving the working efficiency of the distillation tower. At the same time, the tower body 11 composed of multiple sections makes the maintenance of the distillation tower more convenient and targeted.

[0031] like Figure 3 As shown, a plurality of guide grooves 2 are provided on the surface of the tower plate 13; due to the setting of the slag retaining pipe 15, a certain obstruction is formed to the flow of the feed liquid, which has a certain impact on the flow rate of the feed liquid. The guide grooves 2 can promote the flow rate of the feed liquid on the tower plate 13. At the same time, the guide grooves 2 increase the contact area between the feed liquid and the tower plate 13, improve the ability of the tower plate 13 to adhere to impurities, and reduce the accumulation of impurities on the surface of the slag retaining pipe 15 to a certain extent.

[0032] like Figure 4As shown, a side hole 3 is provided on the surface of the slag-blocking pipe 15 near the downcomer 16; the slag-blocking pipe 15 moves the contact position of the gas and liquid away from the tower plate 13, and the contact time and mixing degree of the gas and liquid are reduced. Through the side hole 3, part of the gas contacts the feed liquid near the tower plate 13, which increases the contact area and contact time of the gas and the feed liquid, makes the liquid and the liquid mixed more thoroughly, and increases the mass exchange and heat exchange effect between the gas and the liquid.

[0033] The outer surface of the slag-stopping tube 15 is fixed with a connecting ring 4 through a torsion spring; the connecting ring 4 is fixed with a first baffle 41; the connecting ring 4 is fixed with a first scraper 42; the first scraper 42 and the first baffle 41 are respectively located on both sides of the slag-stopping tube 15, and the surface of the first baffle 41 is perpendicular to the direction of liquid flow; a cavity 43 is provided inside the first scraper 42; a slag guide port 44 is provided on the side of the cavity 43 near the slag guide pipe, and the slag guide port 44 is close to the downcomer 16; the distillation tower works for a long time, and a large amount of impurities are accumulated on the surface of the slag-stopping tube 15. When the distillation tower works for too long, the impurities flow from the bottom of the slag-stopping tube 15 to the top, and then enter the slag-stopping tube 15 The slag stopping pipe 15 will still be blocked. In order to reduce the number of maintenance times, the impurities accumulated on the side of the slag stopping pipe 15 away from the downcomer 16 are cleaned up by the first scraper 42. During operation, when the feed liquid flows through the slag stopping pipe 15, it will push the first baffle 41 to rotate, and through the connection of the connecting ring 4, the first scraper 42 also rotates. When the distillation tower completes a work, when the feed liquid is no longer flowing, the torsion spring resets the first baffle 41, and the first scraper 42 is also reset. When the first scraper 42 rotates, it will sweep the surface of the slag stopping pipe 15, and the impurities will enter the inside of the first scraper 42 from the slag guide port 44, reducing the impurities adhering to the surface of the slag stopping pipe 15, reducing the frequency of maintenance of the distillation tower, and saving usage costs.

[0034] A second baffle 5 is fixedly connected to one side of the connecting ring 4 close to the first baffle 41, and the second baffle 5 is located between the first baffle 41 and the first scraper 42. Since the first baffle 41 rotates around the slag guide pipe under the push of the slurry, as the rotation angle increases, the force of the slurry acting on the first baffle 41 decreases, and the reaction force of the torsion spring also increases, so that the rotation angle of the first scraper 42 is smaller. When the first baffle 41 rotates to the extreme position through the second baffle 5, the second baffle 5 rotates to a position perpendicular to the flow direction of the slurry. Under the push of the slurry, the second baffle 5 rotates, and the first scraper 42 further rotates. When the distillation tower finishes working, the scraping range of the first scraper 42 is larger, which further improves the scraping ability of the first scraper 42.

[0035] like Figure 5As shown, the slag guiding port 44 is provided with an inclined surface 6 near the slag blocking tube 15 ; when the first scraper 42 cleans the surface of the slag blocking tube 15 , the inclined slag guiding port 44 can guide the incoming impurities, and the impurities can enter the cavity 43 more easily.

[0036] The position of the slag guide port 44 is close to the mouth of the slag stopping tube 15; since the impurities on the slag stopping tube 15 flow from the bottom of the slag stopping tube 15 to the mouth of the tube, and then enter the slag stopping tube 15, the impurities near the mouth of the slag stopping tube 15 can be cleaned up to reduce the situation where the through hole 14 is blocked by impurities. Since the space for storing impurities in the first scraper 42 is limited, the time interval for cleaning the first scraper 42 can be extended, the frequency of maintenance can be reduced, and the cost of maintenance can be reduced.

[0037] A chute 7 is provided on the surface of the first scraper 42 near the slag guide port 44; a third baffle 71 is slidably connected in the chute 7; a plurality of springs 72 are fixed between the bottom of the chute 7 and the third baffle 71; a sliding hole 75 is provided on the third baffle 71 near the surface of the slag stop tube 15; a sliding rod 73 is slidably connected in the sliding hole 75: the end of the sliding rod 73 is fixedly connected to the third baffle 71; the slag stop tube 15 is provided with a groove 74 at the extreme position of the rotation of the first scraper 42, and the end of the sliding rod 73 is fixedly connected to the third baffle 71 in the groove 74; in order to reduce the impurities in the cavity 43 from being flushed out of the cavity 43 by the liquid when the distillation tower works next time, when the first rotating plate is in the extreme position, the spring 72 pops out the third baffle 71, and the third baffle 71 seals the slag guide port 44. When the first scraper 42 rotates, the end of the slide rod 73 contacts the surface of the slag blocking pipe 15, and the slide rod 73 pushes the third baffle 71 back into the chute 7, so that the impurities can enter the cavity 43, reducing the outflow of impurities from the cavity 43 and reducing the secondary contamination of the liquid by impurities.

[0038] An L-shaped connecting rod 8 is fixed to the top of the first scraper 42; a second scraper 81 is fixed to the end of the L-shaped connecting rod 8; when the first scraper 42 rotates, the second scraper 81 also rotates through the connection of the L-shaped connecting rod 8, and the second scraper 81 scrapes the inner surface of the slag blocking tube 15, further reducing the possibility of the slag blocking tube 15 being blocked.

[0039] Example 2

[0040] like Figure 6 As shown, compared with Example 1, another embodiment of the present invention is: an elastic cloth 9 is fixed between the slide bar 73 and the first scraper 42, and the elastic cloth 9 covers the slide hole 75; impurities adhering to the slide bar 73 will affect the sliding of the slide bar 73, and may further cause the slide bar 73 to get stuck, affecting the rotation of the first scraper 42. The elastic cloth 9 reduces the adhering of impurities to the slide bar 73, ensures the sliding effect of the slide bar 73, and improves the stability of the device.

[0041] During operation, the slag blocking tube 15 prevents the liquid adhering to the surface of the tower plate 13 from flowing directly into the through hole 14. The adhered impurity liquid will adhere to the outer surface of the slag blocking tube 15 under the push of the liquid. Only some liquid passing through the mouth of the slag blocking tube 15 will remain and enter the slag blocking tube 15. The adhered liquid gathers on the inner wall after flowing into the slag blocking tube 15. As the amount of liquid increases, it will gradually move downward. When passing through the annular groove 17, due to the sudden depression of the tube wall, the impurity liquid will form droplets at the notch position of the annular groove 17. At the same time, the gas flowing from bottom to top will enter the groove 74 when passing through the annular groove 17, and then flow out along the groove 74. The impurity liquid will break away from the inner wall of the slag blocking tube 15 and be blown out of the slag blocking tube 15 under the action of the airflow. The flow guide grooves 2 can promote the flow rate of the feed liquid on the tray 13. At the same time, the flow guide grooves 2 increase the contact area between the feed liquid and the tray 13, improve the ability of the tray 13 to adhere to impurities, and to a certain extent reduce the accumulation of impurities on the surface of the slag retaining tube 15. Through the side holes 3, part of the gas contacts the feed liquid near the tray 13, increasing the contact area and contact time between the gas and the feed liquid, making the liquid and the liquid mixed more thoroughly, and enhancing the quality and heat exchange effect between the gas and the liquid. The first scraper 42 is used to clean up the impurities accumulated on the side of the slag stop pipe 15 away from the downcomer 16. During operation, when the feed liquid flows through the slag stop pipe 15, it will push the first baffle 41 to rotate. Through the connection of the connecting ring 4, the first scraper 42 also rotates. When the distillation tower completes a work and the feed liquid stops flowing, the torsion spring resets the first baffle 41 and the first scraper 42 at the same time. When the first scraper 42 rotates, it will sweep the surface of the slag stop pipe 15. Impurities will enter the first scraper 42 from the slag guide port 44, reducing the impurities adhering to the surface of the slag stop pipe 15. Through the second baffle 5, when the first baffle 41 rotates to the extreme position, the second baffle 5 rotates to a position perpendicular to the flow direction of the feed liquid. Under the push of the feed liquid, the second baffle 5 rotates, and the first scraper 42 further rotates. When the distillation tower finishes work, the first scraper 42 has a wider sweeping range. When the first scraper 42 cleans the surface of the slag-blocking tube 15, the inclined slag guide port 44 can guide the incoming impurities, allowing the impurities to enter the cavity 43 more easily. By cleaning the impurities near the mouth of the slag-blocking tube 15, the situation where the through hole 14 is blocked by impurities can be reduced. Since the space for storing impurities in the first scraper 42 is limited, the time interval for cleaning the first scraper 42 can be extended, the frequency of maintenance can be reduced, and the cost of maintenance can be reduced. When the first rotating plate is in the extreme position, the spring 72 pops out the third baffle 71, and the third baffle 71 seals the slag-blocking port 44. When the first scraper 42 rotates, the end of the slide bar 73 contacts the surface of the slag-blocking tube 15, and the slide bar 73 pushes the third baffle 71 back into the chute 7, allowing impurities to enter the cavity 43, reducing the situation where impurities flow out of the cavity 43.The second scraper 81 connected by the L-shaped connecting rod 8 also rotates, and the second scraper 81 scrapes the inner surface of the slag blocking pipe 15.

[0042] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0044] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency sectional distillation tower, characterized by: The invention comprises a tower base (1); a plurality of tower bodies (11) are fixedly connected to the top of the tower base (1), and the plurality of tower bodies (11) are connected via flanges; a tower top (12) is fixedly connected to the top of the tower body (11); a plurality of tower plates (13) are fixedly connected inside the tower body (11); a downcomer (16) is fixedly connected between the tower plates (13) and the inner wall of the tower body (11); a plurality of through holes (14) are uniformly provided on the surface of the tower plates (13); a slag retaining pipe (15) is fixedly connected to the position of the through holes (14) on the surface of the tower plates (13); an annular groove (17) is provided on the inner surface of the slag retaining pipe (15) near the pipe mouth; a plurality of flow guide grooves (2) are provided on the surface of the tower plates (13); The outer surface of the slag-blocking pipe (15) is fixedly connected to a connecting ring (4) via a torsion spring; the connecting ring (4) is fixedly connected to a first baffle (41); a first scraper (42) is fixedly connected to the connecting ring (4); the first scraper (42) and the first baffle (41) are respectively located on both sides of the slag-blocking pipe (15), and the surface of the first baffle (41) is perpendicular to the direction of liquid flow; a cavity (43) is provided inside the first scraper (42); a slag guide port (44) is provided on the side of the cavity (43) near the slag guide pipe, and the slag guide port (44) is close to the downcomer (16); A sliding groove (7) is provided on the surface of the first scraper (42) near the slag guide port (44); a third baffle (71) is slidably connected in the sliding groove (7); a plurality of springs (72) are fixedly connected between the bottom of the sliding groove (7) and the third baffle (71); a sliding hole (75) is provided on the third baffle (71) near the surface of the slag blocking tube (15); a sliding rod (73) is slidably connected in the sliding hole (75): the end of the sliding rod (73) is fixedly connected to the third baffle (71); a groove (74) is provided on the slag blocking tube (15) at the extreme position of the rotation of the first scraper (42), and the end of the sliding rod (73) is located in the groove (74).

2. A high-efficiency sectional distillation tower according to claim 1, characterized in that: A side hole (3) is provided on the surface of the slag blocking pipe (15) near the downcomer (16); a slope (6) is provided at a position where the slag guiding port (44) is close to the slag blocking pipe (15); and the position of the slag guiding port (44) is close to the pipe opening of the slag blocking pipe (15).

3. A high-efficiency sectional distillation tower according to claim 1, characterized in that: A second baffle (5) is fixedly connected to the connecting ring (4), and the second baffle (5) is located between the first baffle (41) and the first scraper (42); an L-shaped connecting rod (8) is fixedly connected to the top of the first scraper (42); the end of the L-shaped connecting rod (8) is fixedly connected to the second scraper (81); an elastic cloth (9) is fixedly connected between the sliding rod (73) and the first scraper (42), and the elastic cloth (9) covers the sliding hole (75).

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