Segmented collection system for multi-component isomerous fractions

Abstract

The invention relates to the technical field of segmented collection of isomerous fractions, and discloses a segmented collection system of multi-component isomerous fractions, which comprises a fixing mechanism fixedly connected to the inner wall of a box body and used for controlling the horizontal position of petroleum, and a flow limiting mechanism fixedly connected to the outer wall of the box body and used for uniformly distributing the petroleum. The collecting mechanism is fixedly connected to the inner wall of the box body and is used for collecting petroleum in steam, so that when internal raw materials are accommodated to a certain height, the added raw materials flow to the next layer through a downcomer, the raw materials are uniformly distributed on the surface of a fixed plate, and when the height of liquid rises, a floating plate moves upwards, a flow baffle is opened, and the liquid flows downwards; when the liquid on the fixing plate is less, the liquid stays on the surface of the fixing plate, so that the liquid on the fixing plate and the gas reach a balanced state, and the situation that the liquid cannot flow downwards finally due to the fact that the gas phase rising resistance is sharply increased due to the fact that the liquid layer on the fixing plate is too thick is prevented.

Description

Technical Field

[0001] This invention relates to the field of fractional collection equipment for heterogeneous fractions, specifically to a fractional collection system for multi-component heterogeneous fractions. Background Technology

[0002] When performing fractional collection of petroleum fractions, the petroleum needs to be fed from the top of the tower into each layer and come into contact with the steam fed from the bottom of the tower, so that the products of the petroleum in each layer are different, and the petroleum in each layer is collected.

[0003] When oil enters the tower, a fixed outlet weir is set up on the tower. The oil will only enter the next tower layer when the liquid level is higher than the outlet weir. However, when the content of heavy components in the feed increases, the viscosity and density of the liquid increase. This will prevent the liquid from quickly passing over the outlet weir and cause it to accumulate in front of the outlet weir, resulting in an excessively thick liquid layer. When the liquid layer becomes thick, the resistance to the upward movement of the gas phase will increase sharply. Finally, the liquid on the upper tower plate will not be able to flow down, resulting in flooding and making the unit unable to operate. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a segmented collection system for multi-component isomeric fractions, including an external mechanism, which further includes a housing. The housing has several material inlets on its outer wall, an air inlet on its outer wall, a liquid outlet on its outer wall, and a steel frame fixedly connected to its outer wall. The steel frame also has a material inlet on its outer wall and an air outlet on its outer wall.

[0005] The fixing mechanism is fixedly connected to the inner wall of the tank and is used to control the horizontal position of the oil.

[0006] The flow-limiting mechanism is fixedly connected to the outer wall of the tank to ensure even distribution of oil.

[0007] The collection mechanism is fixedly connected to the inner wall of the housing and is used to collect petroleum from the steam.

[0008] Preferably, the fixing mechanism includes:

[0009] Positioning component, which is fixedly connected to the inner wall of the housing;

[0010] The flow-blocking assembly is fixedly connected to the inner wall of the housing.

[0011] Preferably, the current limiting mechanism includes:

[0012] A current limiting component is fixedly connected to the inner wall of the current blocking component;

[0013] The rotating component is fixedly connected to the inner wall of the housing.

[0014] Preferably, the collection institutions include:

[0015] A sliding component is fixedly connected to the inner wall of the rotating component;

[0016] The collection component is located on the inner wall of the sliding component.

[0017] Preferably, the positioning component includes a fixing plate fixedly connected to the inner wall of the box, and a number of air outlet columns fixedly connected to the outer wall of the fixing plate, with a number of air outlets opened on the outer wall of the air outlet columns.

[0018] Preferably, the flow-blocking assembly includes an L-shaped plate fixedly connected to the inner wall of the tank, a positioning block fixedly connected to the outer wall of the L-shaped plate, and a downcomer fixedly connected to the inner wall of the tank.

[0019] Preferably, the flow limiting component includes a fixed block fixedly connected to the inner wall of the positioning block, a tension block slidably connected to the inner wall of the fixed block, a rising block fixedly connected to the outer wall of the tension block, a baffle plate fixedly connected to the outer wall of the rising block, a float plate fixedly connected to the inner wall of the rising block, and a small roller rotatably connected to the outer wall of the baffle plate, with the outer wall of the small roller slidably connected to the inner wall of the L-shaped plate.

[0020] Preferably, the rotating assembly includes a fixing ring fixedly connected to the outer wall of the box, two rotating bars rotatably connected to the inner wall of the fixing ring, two connecting blocks fixedly connected to the outer walls of the two rotating bars, and the other end of the fixing ring fixedly connected to the outer wall of the downcomer.

[0021] Preferably, the sliding assembly includes two liquid collecting plates fixedly connected to the outer walls of the two connecting blocks, sliding columns fixedly connected to the outer walls of the two liquid collecting plates, two rollers rotatably connected to the outer walls of the two sliding columns, curved blocks slidably connected to the outer walls of the two sliding columns, and a rotating rod rotatably connected to the inner wall of the fixed ring, with the end of the rotating rod away from the fixed ring rotatably connected to the curved block.

[0022] Preferably, the collection component includes four liquid collection ports opened on the inner wall of the curved block, a flap is rotatably connected to the inner wall of the liquid collection port, a collection plate is fixedly connected to the inner wall of the liquid collection port, and an oil drip groove is opened on the inner wall of the curved block.

[0023] The present invention has the following beneficial effects:

[0024] (1) In this invention, when the raw material enters the box, it first accumulates on the surface of the fixed plate. When the liquid level of the raw material reaches a certain position, the liquid surface contacts several rotating small balls on the float plate. Because the float plate and the small balls on the float plate are hollow, this will cause the still rising liquid surface to generate a large buoyancy force on the float plate. The buoyancy force will cause the float plate to move upward. When the float plate moves upward, the stretching block will also move upward along the sliding groove inside the fixed block. When the stretching block slides upward, the baffle plate fixedly connected to the rising block will also start to slide upward. When the baffle plate slides upward, the small rollers on the outer wall of the baffle plate will move upward in the groove inside the L-shaped plate. When the baffle moves upward, the raw material remaining on the fixed plate will flow out from the gap between the baffle and the fixed plate. In this way, when the internal raw material fills to a certain height, the added raw material will flow down to the next layer through the downcomer, so that the raw material is evenly distributed on the surface of the fixed plate. When the liquid height rises, the float will move upward, causing the baffle to open and allowing the liquid to flow downward. When there is less liquid on the fixed plate, the liquid will remain on the surface of the fixed plate. This will make the liquid and gas on the fixed plate reach a state of equilibrium, preventing the resistance to the upward movement of the gas phase from increasing sharply due to the excessive liquid layer on the fixed plate, which would ultimately prevent the liquid from flowing downward.

[0025] (2) In this invention, because the steam flows out from below the fixed plate, when the steam passes through the liquid, it will carry some liquid. At this time, the steam will hit the groove at the bottom of the collecting plate. The steam hitting the groove at the bottom will leave the liquid inside the groove of the collecting plate, and the liquid will flow out from both sides of the collecting plate. In this way, when the steam rises, the liquid carried by the steam will be collected in the groove of the collecting plate, preventing a large number of liquid droplets from being carried by the steam to the upper tower section, which would cause the liquid layer of the fixed plate in the upper tower section to be abnormally thick, block the gas phase channel, and cause flooding.

[0026] (3) When the speed of the steam increases, the force generated by the gas when it hits the surface of the collecting plate and the curved block will cause the collecting plate and the curved block to move upward. When the collecting plate and the curved block move upward, the two rotating bars and the two rotating rods will start to rotate. When the curved block moves upward, because the rotating bars cannot be stretched, the rotating bars will exert a pulling force on the collecting plate. The pulling force will cause the sliding column and roller on the two collecting plates to slide along the sliding groove inside the curved block, so that the distance between the two close collecting plates will be pulled apart again. Because the rotating rod is stretchable, it will stretch the rotating rod when the curved block rises. At this time, the gas can flow out from the four collecting ports. In this way, the flow field inside the tower is stabilized, the steam rises more smoothly, and the contact with the liquid on the surface of the fixed plate on the tower plate is more sufficient.

[0027] (4) In this invention, when the two liquid collecting plates are separated, the liquid collecting port is opened, and a large amount of steam will pass through the liquid collecting port. When the large amount of steam passes through the liquid collecting port, some of the steam will come into contact with the flapper. The steam that comes into contact with the flapper will have its movement direction changed by the flapper. The part of the steam whose movement direction has been changed will hit the surface of the collecting plate. The liquid in the steam that hits the surface of the collecting plate will remain on the surface of the collecting plate. The remaining part of the steam will flow out from the outlet of the liquid collecting port, and some will flow out from the dripping oil groove. The steam that comes out from the dripping oil groove will help push the liquid droplets that remain on the inner wall of the curved block, so that the droplets can drip quickly inside the curved block. In this way, it is prevented that when the steam velocity increases, a large amount of steam will carry a large amount of liquid when it rises, and the liquid that has not yet dripped from the groove on the surface of the liquid collecting plate will be absorbed by the steam again and carried into the upper tray, causing the liquid level of the fixed plate in the upper tray to rise, resulting in the upper liquid level being too thick, so that the gas cannot pass through again, so that the upper liquid cannot fall normally, resulting in flooding, which causes the tower to malfunction. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a cross-sectional view of the top structure of the present invention;

[0031] Figure 3 This is a cross-sectional view of the overall structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the overall structure of the baffle plate of the present invention;

[0033] Figure 5 For the present invention Figure 4 Enlarged view of point C in the middle;

[0034] Figure 6 This is a schematic diagram of the overall structure of the fixing ring of the present invention;

[0035] Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle;

[0036] Figure 8 This is a schematic diagram showing the location of the oil drip groove in this invention;

[0037] Figure 9 For the present invention Figure 8Enlarged view of point B in the middle;

[0038] Figure 10 Schematic diagram of the bottom structure of the rotating rod.

[0039] The attached diagram lists the components represented by each number as follows:

[0040] In the diagram: 1. External mechanism; 12. Box body; 13. Feed inlet; 14. Steel frame; 15. Feed inlet; 16. Liquid outlet; 17. Air inlet; 18. Air outlet; 2. Fixing mechanism; 21. Positioning component; 211. Fixing plate; 212. Air outlet column; 213. Air outlet; 22. Baffle component; 221. L-shaped plate; 222. Positioning block; 223. Downcomer; 3. Flow limiting mechanism; 31. Flow limiting component; 311. Fixing block; 312. Tensioner 313. Rising block; 314. Float plate; 315. Baffle plate; 316. Small roller; 32. Rotating assembly; 321. Fixed ring; 322. Rotating bar; 323. Connecting block; 4. Collection mechanism; 41. Sliding assembly; 411. Liquid collection plate; 412. Roller; 413. Sliding column; 414. Curved block; 415. Rotating rod; 42. Collection assembly; 421. Liquid collection port; 422. Flip plate; 423. Collection plate; 424. Oil drip trough. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1, please refer to Figures 1-6 The present invention is a segmented collection system for multi-component isomeric fractions, including an external mechanism 1, which further includes a housing 12. The housing 12 has several material inlets 13 on its outer wall, an air inlet 17 on its outer wall, a liquid outlet 16 on its outer wall, a steel frame 14 fixedly connected to the outer wall of the housing 12, a material inlet 15 on its outer wall, and an air outlet 18 on its outer wall.

[0043] Fixing mechanism 2 is fixedly connected to the inner wall of the housing 12 and is used to control the horizontal position of the oil.

[0044] The flow limiting mechanism 3 is fixedly connected to the outer wall of the housing 12 to ensure that the oil is evenly distributed.

[0045] Collection mechanism 4 is fixedly connected to the inner wall of the housing 12 and is used to collect oil in the steam.

[0046] Fixed mechanism 2 includes:

[0047] Positioning component 21 is fixedly connected to the inner wall of housing 12;

[0048] The flow-blocking assembly 22 is fixedly connected to the inner wall of the housing 12. At the start of operation, hot steam is first introduced into the air inlet 17. The steam then enters the air outlet columns 212 on each fixed plate 211 and flows out from the air outlets 213 inside the air outlet columns 212. Once the steam rises to a certain level, the raw material is fed into the housing 12 through the feed inlet 15. As the raw material enters the housing 12, it first accumulates on the surface of the fixed plates 211.

[0049] Example 2, please refer to Figures 2-10 This invention relates to a segmented collection system for multi-component isomeric fractions. Based on Example 1, 3. According to claim 2, the segmented collection system for multi-component isomeric fractions is characterized in that: the flow-limiting mechanism 3 includes:

[0050] The current limiting component 31 is fixedly connected to the inner wall of the current blocking component 22;

[0051] The rotating component 32 is fixedly connected to the inner wall of the tank 12. When the liquid level of the raw material reaches a certain position, the liquid surface contacts several rotating balls on the float plate 314. Since the float plate 314 and the balls on the float plate 314 are hollow, the rising liquid surface will generate a large buoyancy force on the float plate 314. The buoyancy force will cause the float plate 314 to move upward. When the float plate 314 moves upward, the tension block 312 will also move upward along the sliding groove inside the fixed block 311.

[0052] Collection agency 4 includes:

[0053] Sliding component 41 is fixedly connected to the inner wall of rotating component 32;

[0054] The collecting component 42 is located on the inner wall of the sliding component 41. When the steam velocity increases, the force generated by the gas impacting the surfaces of the collecting plate 411 and the curved block 414 causes them to move upwards. As the collecting plate 411 and the curved block 414 move upwards, the two rotating bars 322 and the two rotating rods 415 begin to rotate. Because the rotating bars 322 cannot be stretched, they exert force on the collecting plate 411 during the upward movement of the curved block 414. The resulting tension causes the sliding columns 413 and rollers 412 on the two liquid collecting plates 411 to slide along the grooves inside the curved block 414, thus widening the distance between the two adjacent liquid collecting plates 411 again. Because the rotating rod 415 is stretchable, it will stretch when the curved block 414 rises. At this time, the gas can flow out from the four liquid collecting ports 421. In this way, the flow field inside the tower is stabilized, making the steam rise more smoothly and have more sufficient contact with the liquid on the surface of the fixed plate 211 on the tower plate.

[0055] The positioning component 21 includes a fixing plate 211 fixedly connected to the inner wall of the housing 12, and a plurality of air outlet columns 212 fixedly connected to the outer wall of the fixing plate 211, and a plurality of air outlets 213 opened on the outer wall of the air outlet columns 212.

[0056] The flow-blocking assembly 22 includes an L-shaped plate 221 fixedly connected to the inner wall of the housing 12, a positioning block 222 fixedly connected to the outer wall of the L-shaped plate 221, and a downcomer 223 fixedly connected to the inner wall of the housing 12.

[0057] There is a certain distance between the bottom of the L-shaped plate 221 and the surface of the fixed plate 211, and the downcomer 223 is fixedly connected to the bottom of the fixed plate 211.

[0058] The flow limiting component 31 includes a fixed block 311 fixedly connected to the inner wall of the positioning block 222, a tension block 312 slidably connected to the inner wall of the fixed block 311, a rising block 313 fixedly connected to the outer wall of the tension block 312, a baffle plate 315 fixedly connected to the outer wall of the rising block 313, a float plate 314 fixedly connected to the inner wall of the rising block 313, and a small roller 316 rotatably connected to the outer wall of the baffle plate 315. The outer wall of the small roller 316 is slidably connected to the inner wall of the L-shaped plate 221.

[0059] The float plate 314 has many rotatable hollow spheres. When the incoming oil comes into contact with the hollow spheres on the float plate 314, the buoyancy generated will cause the float plate 314 to rise. When the float plate 314 rises, the riser block 313 will also start to rise, and the rising riser block 313 will cause the baffle plate 315 to also start to rise.

[0060] The rotating assembly 32 includes a fixing ring 321 fixedly connected to the outer wall of the housing 12, two rotating bars 322 rotatably connected to the inner wall of the fixing ring 321, two connecting blocks 323 fixedly connected to the outer walls of the two rotating bars 322, and the other end of the fixing ring 321 is fixedly connected to the outer wall of the downcomer 223.

[0061] The positions of the two rotating bars 322 and the two connecting blocks 323 are mirror images of each other.

[0062] The sliding assembly 41 includes two liquid collection plates 411 fixedly connected to the outer walls of the two connecting blocks 323, sliding columns 413 fixedly connected to the outer walls of the two liquid collection plates 411, two rollers 412 rotatably connected to the outer walls of the two sliding columns 413, curved blocks 414 slidably connected to the outer walls of the two sliding columns 413, and a rotating rod 415 rotatably connected to the inner wall of the fixed ring 321. The end of the rotating rod 415 away from the fixed ring 321 is rotatably connected to the curved block 414.

[0063] When the steam velocity at the bottom increases, it impacts the collecting plate 411, causing the collecting plate 411 and the curved block 414 to move upward. As the curved block 414 and the collecting plate 411 move upward, the sliding column 413 and the roller 412 are pulled by the rotating bar 322, causing the sliding column 413 and the roller 412 to move to both sides along the groove of the curved block 414.

[0064] The collection component 42 includes four liquid collection ports 421 opened on the inner wall of the curved block 414. A flap 422 is rotatably connected to the inner wall of the liquid collection port 421. A collection plate 423 is fixedly connected to the inner wall of the liquid collection port 421. An oil drip groove 424 is opened on the inner wall of the curved block 414.

[0065] Among them, the flaps 422 in the four liquid collection ports 421 are connected to the collection plate 423 and the oil dripping groove 424 in the same way and in the same position. When the steam carrying gasoline hits the flap 422, the flap 422 rotates and transfers part of the steam to the surface of the collection plate 423. This causes the oil in the steam to enter the groove on the collection plate 423 and drip onto the inner wall of the oil dripping groove 424, and finally flow out along the inner wall of the oil dripping groove 424.

[0066] The fixing mechanism 2, flow limiting mechanism 3, and collection mechanism 4 in the upper tray are centrally symmetrical with the fixing mechanism 2, flow limiting mechanism 3, and collection mechanism 4 in the lower tray.

[0067] One specific application of this embodiment is as follows: when the work starts, hot steam is first introduced into the air inlet 17, and the steam will enter the air outlet column 212 on each fixed plate 211, and then flow out from the air outlet 213 inside the air outlet column 212. When the steam rises to a certain level, the raw material is fed into the tank 12 through the feed inlet 15. As the raw material enters the tank 12, it first accumulates on the surface of the fixed plate 211. When the liquid level of the raw material reaches a certain position, the liquid surface contacts several rotating balls on the float plate 314. Because the float plate 314 and the balls on it are hollow, this causes the still-rising liquid surface to generate a large buoyancy force on the float plate 314. This buoyancy force causes the float plate 314 to move upwards. As the float plate 314 moves upwards, the stretching block 312 also moves upwards along the groove inside the fixed block 311. When the stretching block 312 slides upwards, the baffle plate 315, which is fixedly connected to the rising block 313, also begins to slide upwards. As the baffle plate 315 slides upwards, the small rollers 316 on the outer wall of the baffle plate 315... The material will move upward through the slot inside the L-shaped plate 221. When the baffle plate 315 moves upward, the material remaining on the fixed plate 211 will flow out from the gap between the baffle plate 315 and the fixed plate 211. In this way, when the material inside is filled to a certain height, the added material will flow down through the downcomer 223 to the next layer, so that the material is evenly distributed on the surface of the fixed plate 211. When the liquid height rises, the float plate 314 will move upward, causing the baffle plate 315 to open and allowing the liquid to flow downward. When there is less liquid on the fixed plate 211, the liquid will remain on the surface of the fixed plate 211. This will make the liquid and gas on the fixed plate 211 reach a state of equilibrium, preventing the gas phase resistance from increasing sharply due to the excessively thick liquid layer on the fixed plate 211, which would ultimately prevent the liquid from flowing downward.

[0068] Because the steam flows out from below the fixed plate 211, it carries some liquid as it passes through the liquid. At this time, the steam will hit the slot at the bottom of the collecting plate 411. The steam hitting the slot at the bottom will leave the liquid inside the slot of the collecting plate 411, while the liquid will flow out from both sides of the collecting plate 411. In this way, when the steam rises, it will collect the liquid carried by the steam into the slot of the collecting plate 411, preventing a large number of liquid droplets from being carried by the steam to the upper tower section. This would cause the liquid layer on the fixed plate 211 in the upper tower section to become abnormally thick, block the gas phase channel, and cause flooding.

[0069] As the steam velocity increases, the force generated when the gas impacts the surfaces of the collecting plate 411 and the curved block 414 causes them to move upwards. During this upward movement, both rotating bars 322 and both rotating rods 415 begin to rotate. Because the rotating bars 322 are not stretchable, they exert a pulling force on the collecting plate 411. This pulling force causes the two... The sliding column 413 and roller 412 on the liquid collecting plate 411 slide along the groove inside the curved block 414, which makes the distance between the two close liquid collecting plates 411 widen again. Because the rotating rod 415 is stretchable, it will stretch when the curved block 414 rises. At this time, the gas can flow out from the four liquid collecting ports 421. In this way, the flow field inside the tower is stabilized, the steam rises more smoothly, and the contact with the liquid on the surface of the fixed plate 211 on the tower plate is more sufficient.

[0070] When the two liquid collecting plates 411 separate, the liquid collecting port 421 is opened. At this time, a large amount of steam will pass through the liquid collecting port 421. When a large amount of steam passes through the liquid collecting port 421, some of the steam will come into contact with the flap 422. The steam that comes into contact with the flap 422 will have its movement direction changed by the flap 422. The part of the steam whose movement direction has been changed will hit the surface of the collecting plate 423. The liquid in the steam that hits the surface of the collecting plate 423 will remain on the surface of the collecting plate 423. The remaining part of the steam will go out from the outlet of the liquid collecting port 421, and some will flow out from the dripping oil tank 424. The steam that comes out from the dripping oil tank 424 will help push the liquid that stays on the inner wall of the curved block 414 to the droplets, so that the droplets can drip quickly inside the curved block 414. In this way, when the steam velocity increases, a large amount of steam will carry a large amount of liquid as it rises. The liquid that has not yet dripped from the grooves on the surface of the liquid collecting plate 411 will be adsorbed by the steam again and carried into the upper tray. This will cause the liquid level in the fixed plate 211 of the upper tray to rise, resulting in an excessively thick upper liquid level. This will prevent the gas from passing through again, and the upper liquid will not be able to fall normally, causing flooding and preventing the tower from working properly.

[0071] During the fractionation process, the staff installed the extraction device at the feed port 13 of each tower layer, and the liquid of each layer was extracted.

[0072] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A segmented collection system for multi-component isomeric fractions, comprising an external mechanism (1), the external mechanism (1) further comprising a housing (12), wherein the outer wall of the housing (12) is provided with a plurality of feed inlets (13), the outer wall of the housing (12) is provided with an air inlet (17), the outer wall of the housing (12) is provided with a liquid outlet (16), a steel frame (14) is fixedly connected to the outer wall of the housing (12), the outer wall of the housing (12) is provided with a feed inlet (15), and the outer wall of the housing (12) is provided with an air outlet (18); characterized in that, Also includes: The fixing mechanism (2) is fixedly connected to the inner wall of the box (12) and is used to control the horizontal position of the oil. A flow limiting mechanism (3) is fixedly connected to the outer wall of the housing (12) to ensure uniform distribution of oil. Collection mechanism (4), which is fixedly connected to the inner wall of the box (12) for collecting oil in steam.

2. The fractional collection system for multi-component isomeric fractions according to claim 1, characterized in that: The fixing mechanism (2) includes: Positioning component (21), which is fixedly connected to the inner wall of the housing (12); A flow-blocking assembly (22) is fixedly connected to the inner wall of the housing (12).

3. The fractional collection system for multi-component isomeric fractions according to claim 2, characterized in that: The flow limiting mechanism (3) includes: A current limiting component (31) is fixedly connected to the inner wall of the flow blocking component (22); Rotating component (32) is fixedly connected to the inner wall of the housing (12).

4. The fractional collection system for multi-component isomeric fractions according to claim 3, characterized in that: The collection mechanism (4) includes: A sliding component (41) is fixedly connected to the inner wall of the rotating component (32); A collecting component (42) is provided on the inner wall of the sliding component (41).

5. The fractional collection system for multi-component isomeric fractions according to claim 4, characterized in that: The positioning component (21) includes a fixing plate (211) fixedly connected to the inner wall of the box (12), and a number of air outlet columns (212) fixedly connected to the outer wall of the fixing plate (211), and a number of air outlets (213) are opened on the outer wall of the air outlet columns (212).

6. The fractional collection system for multi-component isomeric fractions according to claim 5, characterized in that: The flow-blocking assembly (22) includes an L-shaped plate (221) fixedly connected to the inner wall of the housing (12), a positioning block (222) fixedly connected to the outer wall of the L-shaped plate (221), and a downcomer (223) fixedly connected to the inner wall of the housing (12).

7. The fractional collection system for multi-component isomeric fractions according to claim 6, characterized in that: The flow limiting component (31) includes a fixed block (311) fixedly connected to the inner wall of the positioning block (222), a tension block (312) slidably connected to the inner wall of the fixed block (311), a rising block (313) fixedly connected to the outer wall of the tension block (312), a baffle plate (315) fixedly connected to the outer wall of the rising block (313), a float plate (314) fixedly connected to the inner wall of the rising block (313), and a small roller (316) rotatably connected to the outer wall of the baffle plate (315). The outer wall of the small roller (316) is slidably connected to the inner wall of the L-shaped plate (221).

8. The fractional collection system for multi-component isomeric fractions according to claim 4, characterized in that: The rotating assembly (32) includes a fixing ring (321) fixedly connected to the outer wall of the housing (12), two rotating bars (322) rotatably connected to the inner wall of the fixing ring (321), two connecting blocks (323) fixedly connected to the outer walls of the two rotating bars (322), and the other end of the fixing ring (321) is fixedly connected to the outer wall of the downcomer (223).

9. A fractional collection system for multi-component isomeric fractions according to claim 8, characterized in that: The sliding assembly (41) includes two liquid collection plates (411) fixedly connected to the outer walls of two connecting blocks (323), two sliding columns (413) fixedly connected to the outer walls of the two liquid collection plates (411), two rollers (412) rotatably connected to the outer walls of the two sliding columns (413), a curved block (414) slidably connected to the outer walls of the two sliding columns (413), and a rotating rod (415) rotatably connected to the inner wall of the fixed ring (321). The end of the rotating rod (415) away from the fixed ring (321) is rotatably connected to the curved block (414).

10. A fractional collection system for multi-component isomeric fractions according to claim 9, characterized in that: The collection component (42) includes four liquid collection ports (421) opened on the inner wall of the curved block (414), a flap (422) is rotatably connected to the inner wall of the liquid collection port (421), a collection plate (423) is fixedly connected to the inner wall of the liquid collection port (421), and an oil drip groove (424) is opened on the inner wall of the curved block (414).

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