A kind of anti-blocking type precipitation tower tray

Abstract

The present application provides an anti-clogging type precipitation tower plate, comprising a tower plate, the tower plate comprising a liquid receiving area, a liquid downfalling area, and a vapor phase channel, the liquid downfalling area is provided with an overflow weir near the vapor phase channel side, a liquid downfalling hole is provided in the liquid downfalling area, and a baffle is provided at the lower part of the liquid downfalling hole; in the present application, the liquid phase passes through the baffle and the vapor phase channel in the tower, undergoes multiple baffles and falling processes, so that the mass transfer and heat transfer effects are enhanced, and at the same time, the flushing effect of the liquid phase also helps to prevent solid accumulation and clogging on the tower plate, improves the mass transfer efficiency and operation effect, and can realize the discharge of solid products from the tower plate to the tower kettle and finally out of the system; and the tower plate of the present application is provided with independent vapor phase and liquid phase channels, and effective vapor-liquid mass transfer is realized between the tower plates, thereby fully avoiding the problem of vapor phase channel clogging, and because the liquid flow moves in a zigzag line in the tower, the residence time of the liquid phase in the tower is extended, so that the raw materials have a longer decomposition or polymerization time.

Description

Technical Field

[0001] The present application relates to a vapor-liquid mass transfer device in a chemical production process, and in particular to an anti-blocking type precipitation tower tray. Background Art

[0002] In the chemical production process, the distillation tower is an important product separation and purification device. The tower plate, as the core component of the distillation tower, plays a vital role. However, in the production process of some special industries, the materials need to be decomposed or polymerized in the tower to produce the target product. However, due to the thermal decomposition or polymerization of the materials, problems such as accumulation, scaling or crystallization often occur, leading to blockage of the tower plate. However, the substances that are easy to block the tower plate are the main products. The blockage will affect the transfer and separation of the substances and increase the pressure drop in the tower until it cannot operate normally.

[0003] The existing anti-clogging tower trays mainly include vertical sieve plate trays, anti-clogging solid valve trays, and angle steel precipitation trays. Among them, the vertical sieve plate trays are generally designed to raise the vapor-liquid contact area or add sleeves to solve the clogging problem, but the obtained solid main product cannot be discharged from the system and can only accumulate on the tray; the anti-clogging solid valve tray is similar to the vertical sieve plate tray and can only accumulate products but not discharge them. The angle steel precipitation tray has too short a residence time of the material in the tower and the material is not completely decomposed into the main product, resulting in waste of raw materials.

[0004] For example, in a low-resistance and anti-blocking tower plate with Chinese patent application number 202021107616.6 and publication number CN212941519U, a technical solution is provided, including a tower plate, a steam riser, a sleeve and a cover body, wherein a number of steam risers are evenly distributed on the tower plate, and the steam riser is higher than the tower plate by a certain height. A sleeve is arranged on the upper part of each steam riser, and a bottom gap is left between the sleeve and the tower plate; a cover body is arranged on the upper part of each sleeve, and a bottom gap is left between the cover body and the sleeve; a number of separation holes are evenly arranged on the cover body; the application increases the vapor-liquid mass transfer area by arranging a steam riser to avoid suspended matter deposited on the tower plate from clogging the vapor-liquid mass transfer channel, but the application adopts the method of adding a sleeve to solve the blockage problem, but the obtained solid main product cannot be discharged from the system and can only accumulate on the tower plate.

[0005] In summary, the anti-blocking trays in the prior art mainly have the following technical problems:

[0006] 1. The products deposited on the tray cannot be effectively dropped to the tower kettle discharge system;

[0007] 2. The products produced are likely to clog the vapor phase channel of the tray;

[0008] 3. Insufficient stay time.

[0009] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0010] The present application provides an anti-clogging type precipitation tower plate, comprising a tower plate, wherein the tower plate comprises a liquid receiving area, a liquid downcomer area, and a vapor phase channel, wherein an overflow weir is arranged near the vapor phase channel side of the liquid downcomer area, a liquid downcomer hole is arranged in the liquid downcomer area, and a baffle is arranged at the lower part of the liquid downcomer hole.

[0011] As a preferred solution, the liquid drop hole is a round hole or an oblong hole.

[0012] As a preferred solution, when the liquid-dropping hole is a round hole, the diameter of the liquid-dropping hole is 8 mm-20 mm.

[0013] As a preferred solution, 2-8 rows of liquid downcomers are arranged in the liquid downcomer area.

[0014] As a preferred solution, the liquid drop zone is provided with two rows of liquid drop holes, and the liquid drop holes include liquid drop hole 1 and liquid drop hole 2.

[0015] As a preferred solution, the angle between the projections of the liquid receiving area on the tower plane is 3°-12°.

[0016] As a preferred solution, the angle between the projections of the downcomer zone and the downcomer zone on the tower plane is 3°-12°.

[0017] As a preferred solution, the downcomers are provided with a liquid receiving area and a side of the liquid downcomer area, and the angles between the liquid receiving area, the liquid downcomer area and their respective projections on the tower plane are the same.

[0018] As a preferred solution, the tower plate is a polished plate.

[0019] As a preferred solution, the tower tray is sprayed with a hydrophobic material.

[0020] In the present application, the liquid phase passes through the baffles and vapor phase channels in the tower, undergoing multiple baffles and falling processes, so that the mass transfer and heat transfer effects are enhanced. At the same time, the flushing effect of the liquid phase also helps to prevent solid accumulation and clogging on the tower plate, thereby improving the mass transfer efficiency and operating effect, and can achieve solid product discharge from the tower plate to the tower kettle and finally discharge the system; and the tower plate of the present application has independent vapor phase and liquid phase channels, and effective vapor-liquid mass transfer is achieved between the tower plates, thereby fully avoiding the problem of vapor phase channel clogging. Since the liquid flow moves in a zigzag line in the tower, the residence time of the liquid phase in the tower is extended, so that the raw materials have a longer decomposition or polymerization time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a top view of a single overflow type tray 1 of the present application;

[0022] Figure 2 yes Figure 1 The main view;

[0023] Figure 3 It is a top view of the single overflow type tray 2 of the present application;

[0024] Figure 4 This is the main view of the tray 1 and tray 2 used together;

[0025] Figure 5 is a top view of the double overflow type tray 3 of the present application;

[0026] Figure 6 is a top view of the double overflow type tray 4 of the present application;

[0027] Figure 7 yes Figure 5 and Figure 6 The main view used in conjunction with;

[0028] Figure 8 is a top view of the four-overflow type tray 5 of the present application;

[0029] Fig. 9 is a top view of the four-overflow type tray six of the present application;

[0030] Fig.10 yes Figure 8 and Fig. 9 The main view used in conjunction with;

[0031] 1. Tower tray 2. Liquid receiving area 3. Liquid downtake area 4. Vapor phase channel

[0032] 5. Overflow weir 6. Baffle 7. Downflow hole 1 8. Downflow hole 2

[0033] 9, tray one 10, tray two 11, tray three 12, tray four

[0034] 13. Tower Plate 5 14. Tower Plate 6 15. Tower Plate 51 16. Tower Plate 52

[0035] 17. Tower Plate 53 Area 18. Tower Plate 61 Area 19. Tower Plate 62 Area

[0036] 20. Vapor phase channel one 21. Vapor phase channel two 22. Vapor phase channel three. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1 — Fig.10 The specific implementation of the utility model is described in detail. It should be noted that the specific implementation described here is only used to illustrate and explain the utility model, and is not used to limit the utility model.

[0038] A blocking-resistant drip tray, comprising a tray 1, wherein the tray 1 is a polished plate or the tray 1 is sprayed with a hydrophobic material to solve the problem of scaling and adhesion of solid products on the tray 1, effectively avoiding the accumulation of solid products on the tray 1, and ensuring that the products can be smoothly discharged from the tower; the tray 1 comprises a liquid receiving area 2, a liquid downflow area 3, and a vapor phase channel 4, wherein the liquid downflow area 3 is provided with an overflow weir 5 near the vapor phase channel 4, wherein the liquid downflow area 3 is provided with a liquid downflow hole, wherein the liquid downflow hole can not only guide out the solid product, but also realize the liquid downflow effect, wherein the liquid downflow hole is a circular hole or an oblong hole, wherein the diameter of the liquid downflow hole is 8 mm-20 mm, wherein a baffle 6 is provided at the lower part of the liquid downflow hole, wherein the baffle 6 is used to transfer the drip The washing liquid is guided to the next layer of the tower plate 1 to prevent the liquid from deviating in the direction of the liquid flow. The angle of the baffle 6 is set according to the different properties of the material, which will not be described in detail here. In the present application, the vapor phase is provided with a vapor phase channel 4, and the liquid is provided with a downcomer hole, which do not interfere with each other to prevent the vapor phase channel from being blocked, so that the reaction can proceed more smoothly. The liquid receiving area 2 and the downcomer area 3 can be limited to the downcomer hole, one side of the downcomer hole is the liquid receiving area 2, and the other side of the downcomer hole is the downcomer area 3. It can also be set that the side of the downcomer hole close to the overflow weir 5 is the downcomer area 3, and the other side of the downcomer hole is the common area of ​​the liquid receiving area 2 and the downcomer area 3. There is no obvious boundary between the liquid receiving area 2 and the downcomer area 3, and the technicians can make a choice according to the specific situation.

[0039] Preferably, 2-8 rows of downcomers are arranged in the downcomer area according to different tower diameters. Taking two rows as an example, the downcomer area is provided with 2 rows of downcomers, the downcomers include downcomers one 7 and downcomers two 8, that is, one row of downcomers one 6 and one row of downcomers two 8, the angle between the liquid receiving area 2 and the projection of the liquid receiving area 2 on the tower plane is 3°-12°, the angle between the downcomer area 3 and the projection of the downcomer area 3 on the tower plane is 3°-12°, the side of the downcomer hole 7 close to the overflow weir is only the downcomer area 3, and the other side of the downcomer hole 7 is the common area of ​​the liquid receiving area 2 and the downcomer area 3, and the side where the liquid receiving area 2 and the downcomer area 3 are jointly arranged, the angles between the liquid receiving area 2 and the downcomer area 3 and their respective projections on the tower plane are the same, such as both are 3°; the downcomer on one side of the downcomer hole 7 The area 3 and the liquid receiving area 2 are arranged tilted upward, and the liquid dropping area 3 on the other side of the liquid dropping hole 7 is arranged tilted upward. The angle and tilt of the arrangement can not only ensure the smooth flow of the solid, but also prevent the impact of the liquid phase. When the liquid dropping hole 17 and the liquid dropping hole 28 are arranged, the liquid receiving area 2 and the liquid dropping area 3 can be limited to the liquid dropping hole 17, one side of the liquid dropping hole 17 is the liquid receiving area 2, and the other side of the liquid dropping hole 17 is the liquid dropping area 3. It can also be arranged that the side of the liquid dropping hole 17 close to the overflow weir 5 is the liquid dropping area 3, and the other side of the liquid dropping hole is the common area of ​​the liquid receiving area 2 and the liquid dropping area 3. There is no obvious boundary between the liquid receiving area 2 and the liquid dropping area 3, and the technical personnel can make a choice according to the specific situation. The following embodiment is explained by taking the example of not setting an obvious boundary, and will not be repeated later.

[0040] The working principle of the present application is as follows: the liquid flows down from the downcomer holes of the upper layer, and flows downward after being baffled by the baffle plate 6; the lateral force of the vapor phase in the vapor phase channel 4 of the lower layer causes the liquid phase to undergo a second baffle, causing it to flow to the liquid receiving area 2 of the lower tower plate 1; in the process of contact between the vapor phase and the liquid phase, mass transfer and heat transfer occur; after the liquid phase falls into the liquid receiving area 2, it effectively flushes the solids formed on the tower plate 1, and flows along the tower plate 1 to the downcomer area 3; in the downcomer area 3, the liquid phase and the solid drip down to the next tower plate 1 through the downcomer holes, and the mass transfer continues.

[0041] Embodiment 1:

[0042] like Figures 1 to 4 As shown, this embodiment provides a single overflow type anti-blocking type precipitation tower tray, including a staggered tower tray 1 9 and a tower tray 2 10, the tower tray 1 9 and the tower tray 2 10 both include a liquid receiving area 2, a liquid downcomer area 3, and a vapor phase channel 4, and an overflow weir 5 is provided at one end of the liquid downcomer area 3 close to the vapor phase channel 4. In this embodiment, an overflow weir 5 is provided on each of the tower trays 1 9 and 10, and a double row of liquid downcomers are provided in the liquid downcomer area 3, which are liquid downcomers 1 7 and liquid downcomers 2 8, that is, one row of liquid downcomers 1 7 and one row of liquid downcomers 2 8;

[0043] The downcomer hole 1 7 and the downcomer hole 2 8 are arranged to not only guide out the solid product, but also realize the downcomer effect. In this embodiment, the downcomer hole 1 7 and the downcomer hole 2 8 are circular holes with a hole diameter of 8 mm to 20 mm. The downcomer hole 1 7 is close to the overflow weir 5 on one side and is only a downcomer area 3. The downcomer area 3 is arranged obliquely upward. The other side of the downcomer hole 1 7 is a liquid receiving area 2 and a downcomer area 3. The liquid receiving area 2 and the downcomer area 3 are arranged obliquely upward. The angle between the projections of the liquid receiving area 2 and the liquid receiving area 2 on the tower plane is 3° to 12°. The downcomer area 3 and the downcomer area 3 are arranged obliquely upward. The angle between the projections of the plane is 3°-12°. When the liquid receiving area 2 and the liquid downcomer area 3 are jointly provided on one side of the downcomer hole 7, the angles between the liquid receiving area 2 and the liquid downcomer area 3 and their respective projections on the tower plane are the same, such as 3°. The lower parts of the downcomer hole 17 and the downcomer hole 28 are both provided with baffles 6. The baffles 6 are used to guide the elution liquid on the tower plate 19 to the next tower plate 2 10, and to guide the elution liquid on the tower plate 2 10 to the next tower plate 9, and so on, to prevent the liquid from deviating along the liquid flow direction.

[0044] The working principle of this embodiment is as follows: the liquid flows down from the downcomer hole 1 7 and the downcomer hole 2 8 of the tower tray 1 9, and flows downward after being baffled by the baffle plate 6; the lateral force of the vapor phase in the vapor phase channel 4 of the tower tray 2 10 causes the liquid phase to be baffled for the second time, so that it flows to the liquid receiving area 2 of the tower tray 2 10, and in the process of contact between the vapor phase and the liquid phase, mass transfer and heat transfer occur. After the liquid phase falls on the liquid receiving area 2 of the tower tray 2 10, it effectively washes the solid formed on the tower tray 2 10 and flows along the tower tray 2 10 to the downcomer area 3 of the tower tray 2 10; in the downcomer area 3 of the tower tray 2 10, the liquid phase and the solid drip down to the tower tray 1 9 of the next layer through the downcomer hole 1 7 and the downcomer hole 2 8, and the mass transfer effect continues, and so on, to achieve mass transfer.

[0045] Embodiment 2:

[0046] like Figures 5 to 7 As shown, this embodiment provides a double overflow type anti-blocking type precipitation tower tray, including a staggered tower tray three 11 and a tower tray four 12, the middle part of the tower tray three 11 is a liquid receiving area 2, both sides of the liquid receiving area 2 are liquid downflowing areas 3, one side of the liquid downflowing area 3 is a vapor phase channel 4, and the tower tray three 11 includes two vapor phase channels 4; an overflow weir 5 is arranged on the side of the liquid downflowing area 3 close to the vapor phase channel 4, and two overflow weirs 5 are arranged on the tower tray three 11, and two groups of liquid downflowing holes are respectively opened in the liquid downflowing areas 3 on both sides, namely, liquid downflowing hole one 7 and liquid downflowing hole two 8, and the liquid downflowing hole one 7 and the liquid downflowing hole two 8 are circular holes with an aperture size of 8mm-20mm, and the side of the liquid downflowing hole one 7 close to the overflow weir 5 is only the liquid downflowing area 3, and the liquid downflowing area 3 is arranged obliquely upward, and the other side of the liquid downflowing hole one 7 is the liquid receiving area 2 and the liquid downflowing area 3, The liquid receiving area 2 and the liquid downsetting area 3 are arranged upwardly inclined, the middle part of the tower plate three is the liquid receiving area 2, which is arranged upwardly in the middle and downwardly at both ends, the angle between the projections of the liquid receiving area 2 and the liquid receiving area 2 on the tower plane is 3°-12°, the angle between the projections of the liquid downsetting area 3 and the liquid downsetting area 3 on the tower plane is 3°-12°, when the liquid receiving area 2 and the liquid downsetting area 3 are jointly arranged on one side of the liquid downsetting hole 1 7, the angles between the liquid receiving area 2 and the liquid downsetting area 3 and their respective projections on the tower plane are the same, such as both are 3°, the lower parts of the liquid downsetting hole 1 7 and the liquid downsetting hole 2 8 are both provided with a baffle 6, the baffle 6 is used to guide the elution liquid on the tower plate three 11 to the next tower plate four 12, and to guide the elution liquid on the tower plate four 12 to the next tower plate three 11, and so on, to prevent the liquid from deviating along the liquid flow direction.

[0047] The middle part of the tower plate four 12 is a vapor phase channel 4, and the tower plate four 12 is provided with a vapor phase channel 4. The two symmetrical sides of the vapor phase channel 4 are down-flowing areas 3, and the down-flowing areas 3 are respectively connected to the liquid receiving areas 2. An overflow weir 5 is arranged on the down-flowing area 3 close to the vapor phase channel 4. Two overflow weirs 5 are arranged on the tower plate four 12. Two groups of down-flowing holes are respectively opened in the two down-flowing areas 3, which are down-flowing holes one 7 and down-flowing holes two 8, that is, a row of down-flowing holes one 7 and a row of down-flowing holes two 8. The down-flowing holes one 7 and the down-flowing holes two 8 are both circular holes with an aperture size of 8mm-20mm. The side of the down-flowing hole one 7 close to the vapor phase channel 4 is only the down-flowing area 3. The down-flowing area 3 is arranged inclined upward. The down-flowing holes one 7 The other side is the liquid receiving area 2 and the liquid downflow area 3, the liquid receiving area 2 and the liquid downflow area 3 are arranged obliquely upward, the angle between the projections of the liquid receiving area 2 and the liquid receiving area 2 on the tower plane is 3°-12°, the angle between the projections of the liquid downflow area 3 and the liquid downflow area 3 on the tower plane is 3°-12°, when the liquid receiving area 2 and the liquid downflow area 3 are jointly arranged on one side of the downflow hole 7, the angles between the liquid receiving area 2 and the liquid downflow area 3 and their respective projections on the tower plane are the same, such as both are 3°, the lower parts of the downflow hole 1 7 and the downflow hole 2 8 are both provided with a baffle 6, the baffle 6 is used to guide the elution liquid on the tower plate 4 12 to the next tower plate 3 11, the working principle is the same as that of embodiment 1, and no detailed description is made here.

[0048] Embodiment three:

[0049] like Figures 8 to 10As shown, the present embodiment provides a four-overflow type anti-blocking type precipitation tower tray, including staggered tower tray five 13 and tower tray six 14, tower tray five 13, tower tray six 14, tower tray three 11, tower tray four 12, tower tray one 9, and tower tray two 10 are all tower trays in the prior art, and different description methods are used to distinguish different quantities and positional relationships, wherein tower tray five 13 includes tower tray five first area 15, tower tray five second area 16, and tower tray five third area 17, and vapor phase channels 4 are respectively arranged between tower tray five first area 15 and tower tray five second area 16, and between tower tray five first area 15 and tower tray five third area 17, the middle part of tower tray five first area 15 is a liquid receiving area 2, and both sides of the liquid receiving area 2 are liquid downfalling areas 3, and the liquid downfalling area 3 is close to the vapor phase channel 4. An overflow weir 5 is arranged on one side, and two overflow weirs 5 are arranged on the tower plate five-one area 15. Two groups of liquid-dropping holes are respectively opened in the liquid-dropping areas 3 on both sides, namely, liquid-dropping holes one 7 and liquid-dropping holes two 8, that is, a row of liquid-dropping holes one 7 and a row of liquid-dropping holes two 8. Liquid-dropping holes one 7 and liquid-dropping holes two 8 are both circular holes with a hole diameter of 8mm-20mm. The side of liquid-dropping hole one 7 close to the overflow weir 5 is the liquid-dropping area 3, which is inclined upward. The other side of liquid-dropping hole one 7 is the liquid-receiving area 2 and the liquid-dropping area 3, which are inclined upward. The liquid-receiving area 2 of the tower plate five-one area 15 is inclined upward in the middle and downward at both ends. The angle between the projection of the liquid-receiving area 2 and the projection of the liquid-receiving area 2 on the tower plane is 3°-12°. , the angle between the projection of the down-flowing area 3 and the down-flowing area 3 on the tower plane is 3°-12°. When the liquid receiving area 2 and the down-flowing area 3 are jointly arranged on one side of the down-flowing hole 7, the angle between the liquid receiving area 2 and the down-flowing area 3 and their respective projections on the tower plane are the same, such as 3°. The lower parts of the down-flowing hole 7 and the down-flowing hole 2 8 are both provided with baffles 6; the tower plate 52 area 16 and the tower plate 53 area 17 both include the liquid receiving area 2 and the down-flowing area 3, and the down-flowing area 3 is provided with an overflow weir 5 at one end close to the vapor phase channel 4. In this embodiment, an overflow weir 5 is respectively arranged on the tower plate 52 area 16 and the tower plate 53 area 17, and the down-flowing area 4 is provided with double rows of down-flowing holes, namely, the down-flowing hole 1 7 and the down-flowing hole 2 8. In this embodiment, the down-flowing hole 1 7 and the downcomer hole 2 8 are circular holes with an aperture size of 8mm-20mm. The side of the downcomer hole 7 close to the overflow weir 5 is only the downcomer zone 3, and the downcomer zone 3 is arranged obliquely upward. The other side of the downcomer hole 7 is the receiving zone 2 and the downcomer zone 3, and the receiving zone 2 and the downcomer zone 3 are arranged obliquely upward. The angle between the projection of the receiving zone 2 and the projection of the tower plane is 3°-12°, and the angle between the projection of the downcomer zone 3 and the projection of the downcomer zone 3 on the tower plane is 3°-12°. When the receiving zone 2 and the downcomer zone 3 are jointly arranged on one side of the downcomer hole 7, the angles between the receiving zone 2 and the downcomer zone 3 and their respective projections on the tower plane are the same, such as both are 3°. The lower parts of the downcomer hole 1 7 and the downcomer hole 2 8 are both provided with baffles 6.

[0050] The tray 6 14 includes a tray 6 first area 18 and a tray 6 second area 19. A vapor phase channel 1 20 is arranged between the tray 6 first area 18 and the tray 6 second area 19. The other side of the tray 6 first area 18 is a vapor phase channel 21, and the other side of the tray 6 second area 19 is a vapor phase channel 3 22. The tray 6 first area 18 is close to the vapor phase channel 1 20 and the two ends of the vapor phase channel 2 21, respectively. The tray 6 second area 19 is close to the vapor phase channel 1 20 and the vapor phase channel 3 22. The two ends of the channel three 22 are respectively provided with overflow weirs 5, that is, the tray six 14 is provided with four overflow weirs 5, the middle of the tray six first area 18 and the tray six second area 19 is the liquid receiving area 2, and the two sides of the liquid receiving area 2 are the liquid downflow area 3, and the liquid downflow area 3 is provided with overflow weirs 5 on the sides close to the vapor phase channel one 20, the vapor phase channel two 21, and the vapor phase channel three 22. The tray six first area 18 and the tray six second area 19 are respectively provided with two overflow weirs 5, and the liquid downflow areas on both sides are provided with overflow weirs 5. Two groups of liquid-dropping holes are respectively provided in the area 3, namely, liquid-dropping hole 1 7 and liquid-dropping hole 2 8. Both liquid-dropping hole 1 7 and liquid-dropping hole 2 8 are circular holes with a hole diameter of 8 mm to 20 mm. The side of liquid-dropping hole 1 7 close to the overflow weir 5 is the liquid-dropping area 3, which is inclined upward. The other side of liquid-dropping hole 1 7 is the liquid-receiving area 2 and the liquid-dropping area 3, which are inclined upward. The liquid-receiving area 2 of the area 18 of the tower plate 6 is in the middle upward, and the two ends are inclined upward. It is arranged to be inclined downward, and the angle between the projections of the liquid receiving area 2 and the liquid receiving area 2 on the tower plane is 3°-12°, and the angle between the projections of the liquid downsetting area 3 and the liquid downsetting area 3 on the tower plane is 3°-12°. When the liquid receiving area 2 and the liquid downsetting area 3 are jointly arranged on one side of the liquid downsetting hole 7, the angles between the liquid receiving area 2 and the liquid downsetting area 3 and their respective projections on the tower plane are the same, such as both are 3°, and the lower parts of the liquid downsetting hole 1 7 and the liquid downsetting hole 2 8 are both provided with baffles 6.

[0051] In summary, due to the adoption of the above technical solution, the present application has the following advantages:

[0052] 1. The liquid and solids dripping down from this device have a flushing effect on the lower tower tray, which can slow down the occurrence of tower tray scaling and keep the tower tray clean;

[0053] 2. The gas channel and the downcomer are set separately without interfering with each other to prevent the gas phase channel from being blocked;

[0054] 3. Compared with the traditional tower tray, the gas resistance of the present application is smaller, the whole tower pressure is reduced, and compared with the tower tray with large relative resistance drop, the device can make the tower bottom temperature lower, which is beneficial to reduce the energy consumption of distillation operation;

[0055] 4. The liquid flow of the present application flows in a zigzag line in the tower, which makes the liquid phase stay for a long time, which is conducive to more complete decomposition or polymerization of the materials in the tower;

[0056] 5. This application can set a smaller tray spacing to reduce the investment of the entire tower.

[0057] The above-mentioned devices, connection relationships, etc. that are not specifically described belong to the prior art and will not be described in detail in the present utility model.

[0058] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0059] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the various possible combinations of this application will not be described separately.

[0060] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A plugging-resistant leaching tray, characterized in that: The tower plate (1) comprises a liquid receiving area (2), a liquid downcomer area (3), and a vapor phase channel (4); an overflow weir (5) is arranged on the side of the liquid downcomer area (3) close to the vapor phase channel (4); a liquid downcomer hole is arranged in the liquid downcomer area (3); and a baffle (6) is arranged at the lower part of the liquid downcomer hole.

2. The anti-blocking type leaching tray according to claim 1, characterized in that: The downcomer hole is a round hole or an oblong hole.

3. The anti-blocking type leaching tray according to claim 2, characterized in that: When the liquid drop hole is a round hole, the hole diameter is 8mm-20mm.

4. The anti-blocking type leaching tray according to claim 1, characterized in that: 2 to 8 rows of liquid drop holes are arranged in the liquid drop zone (3).

5. The anti-blocking type leaching tray according to claim 1, characterized in that: The angle between the liquid receiving area (2) and the projection of the liquid receiving area (2) on the tower plane is 3°-12°.

6. The anti-blocking type leaching tray according to claim 1, characterized in that: The angle between the downcomer zone (3) and the projection of the downcomer zone (3) on the tower plane is 3°-12°.

7. The anti-blocking type leaching tray according to claim 1, characterized in that: The downcomers are provided on one side of a liquid receiving area (2) and a liquid downcomer area (3) together, and the angles between the liquid receiving area (2) and the liquid downcomer area (3) and their respective projections on the tower plane are the same.

8. The anti-blocking type leaching tray according to claim 1, characterized in that: The tower plate (1) is a polished plate.

9. The anti-blocking type leaching tray according to claim 1, characterized in that: The tower plate (1) is sprayed with a hydrophobic material.

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