High-efficiency packing device for acrylic polyol continuous catalytic reaction

Abstract

The utility model relates to a filler device technical field especially relates to a kind of high-efficiency filler device for acrylic polyol continuous catalytic reaction, including filler frame, overflow weir, main filler basket, annular auxiliary filler basket and diversion hopper;The center of filler frame is provided with filler pool, the inside of filler pool is equipped with the main filler basket for regular filler, the inside of main filler basket is provided with main filler groove, the outer end of filler pool is equipped with annular overflow weir, the outer end of annular overflow weir is provided with annular overflow pool, the top of annular overflow pool is equipped with annular auxiliary filler basket, the inside of annular auxiliary filler basket is provided with auxiliary filler groove;The utility model realizes by setting main filler basket and annular auxiliary filler basket, the mass transfer efficiency of main body reaction is guaranteed in the main filler area of main filler basket, the unreacted liquid produced by wall flow effect is specially handled in the auxiliary filler area of annular auxiliary filler basket, so that the liquid that is not fully reacted due to wall flow effect is used again.

Description

Technical Field

[0001] This utility model relates to the field of packing device technology, and in particular to a high-efficiency packing device for continuous catalytic reaction of acrylic polyols. Background Technology

[0002] In the continuous catalytic reaction of acrylic polyols, packed towers are important reaction equipment. The rational layout and efficient utilization of the packing material inside the tower directly affect the reaction efficiency and product quality. As a key carrier for gas-liquid two-phase contact, the packing material needs to provide sufficient contact area and mass transfer space to ensure that the catalytic reaction proceeds fully. Currently, the industry generally adopts packed tower structures to achieve continuous production. By filling the tower with packing material of specific specifications, the mixing and mass transfer effect of the gas and liquid phases are enhanced, thereby improving the reaction conversion rate. Existing packed towers mostly use a single packing support plate to support the packing material, which has obvious defects.

[0003] The existing method of using a single packing support plate to support the packing has several drawbacks. On the one hand, the liquid flows down the tower wall, resulting in uneven liquid distribution between the central and peripheral areas and reduced packing utilization. On the other hand, relying solely on the bottom support plate cannot regulate the dynamic distribution of the packing. Especially in continuous catalytic reactions, the packing is prone to displacement or accumulation, affecting reaction stability. Furthermore, the lack of a staged flow guidance design for overflow liquid can lead to local flooding or gas-liquid short-circuiting, reducing reaction efficiency.

[0004] Therefore, to address the problems of existing methods that use a single packing support plate for packing support, a high-efficiency packing device for continuous catalytic reaction of acrylic polyols can be designed. Through a layered and zoned packing support design, the device achieves cascaded mass transfer and wall flow recovery of the liquid: the main packing area ensures the mass transfer efficiency of the main reaction, while an auxiliary packing area is set up to specifically handle unreacted liquid generated by the wall flow effect; and the overflow structure enables the orderly diversion and circulation of the liquid, thereby facilitating the solution of the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing methods that use a single packing support plate to support the packing, such as uneven liquid flow distribution between the central and peripheral areas leading to reduced packing utilization, easy packing displacement or accumulation affecting reaction stability, and lack of graded flow guidance design for overflowing liquid, resulting in local flooding or gas-liquid short circuits and reduced reaction efficiency, this invention provides a high-efficiency packing device for continuous catalytic reaction of acrylic polyols.

[0006] The technical solution is as follows: A high-efficiency packing device for continuous catalytic reaction of acrylic polyols includes a packing frame, an overflow weir, a main packing basket, an annular auxiliary packing basket, and a guide hopper; a packing pool is provided in the center of the packing frame, a main packing basket for organizing the packing is provided inside the packing pool, a main packing groove for accommodating the packing is provided inside the main packing basket, an annular overflow weir is provided at the outer end of the packing pool, an annular overflow pool is provided at the outer end of the annular overflow weir, an annular auxiliary packing basket for receiving the wall flow effect generated by the distributor is provided above the annular overflow pool, an auxiliary packing groove for accommodating the packing is provided inside the annular auxiliary packing basket, and a guide hopper is provided at the lower edge of the packing frame.

[0007] Furthermore, the annular overflow weir has an overflow guide angle on the top of the side near the filling pool, a guide slope on the side of the annular overflow weir near the annular overflow pool, and multiple sets of first through holes are opened around the bottom of the annular overflow pool.

[0008] Furthermore, the bottom of the inner wall of the packing pool is provided with a first support ring corresponding to the main packing basket, and the top of the outer wall of the annular overflow pool is provided with a second support ring corresponding to the annular auxiliary packing basket.

[0009] Furthermore, the upper end of the annular overflow weir is symmetrically provided with two sets of arc-shaped blocks that cooperate with the second support ring. The side of the arc-shaped block closest to the second support ring has a groove that is horizontal to the second support ring.

[0010] Furthermore, multiple sets of connecting rods are evenly provided at the bottom of the tray, and a connecting seat corresponding to the connecting rod is provided at the upper end of the annular overflow weir.

[0011] Furthermore, an overflow channel is provided between the overflow weir and the arc-shaped support block, and the filling pool and the annular overflow pool are connected through the overflow channel.

[0012] Furthermore, multiple sets of second through holes are evenly opened at the bottom of both the main packing trough and the auxiliary packing trough, and an installation ring is fitted on the outer end of the packing frame.

[0013] The beneficial effects are that, compared with the problems of using a single packing support plate to support the packing in the existing method, this application sets up a main packing basket and an annular auxiliary packing basket. The main packing area of ​​the main packing basket ensures the mass transfer efficiency of the main reaction, while the auxiliary packing area of ​​the annular auxiliary packing basket is specifically designed to handle unreacted liquid generated by the wall flow effect. This allows liquid that was not fully reacted due to the wall flow effect to be reused, greatly improving the overall utilization rate of the packing. The overflow weir structure realizes the orderly diversion and circulation of liquid, reducing the occurrence of local flooding or gas-liquid short-circuiting, making the reaction more complete, thereby improving the reaction conversion rate and efficiency. It effectively solves the problem of uneven liquid flow distribution in the central and peripheral areas of the traditional single packing support plate. The liquid can flow in an orderly manner in the main and auxiliary packing areas, reducing the phenomenon of liquid flowing down the tower wall, and making the gas-liquid two-phase contact more complete. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the high-efficiency packing device of this utility model; Figure 2 This is a three-dimensional structural diagram of the packing frame of this utility model; Figure 3 This is a three-dimensional structural diagram of the packing frame and guide hopper of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the overflow weir of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the arc-shaped support block and overflow weir of this utility model; Figure 6 This is a three-dimensional structural diagram of the main packing basket and the annular auxiliary packing basket of this utility model.

[0015] Explanation of reference numerals in the attached drawings: 1. Packing frame; 2. Packing pool; 3. Annular overflow pool; 4. Annular overflow weir; 5. Main packing basket; 501. Main packing trough; 6. Annular auxiliary packing basket; 601. Auxiliary packing trough; 7. Mounting ring; 8. First support ring; 9. Second support ring; 10. First through hole; 11. Guide bucket; 12. Overflow guide angle; 13. Guide slope; 14. Arc-shaped support block; 15. Support groove; 16. Connecting rod; 17. Connecting seat; 18. Overflow groove; 19. Second through hole. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Example

[0017] like Figures 1-6 As shown, a high-efficiency packing device for continuous catalytic reaction of acrylic polyols includes a packing frame 1, an overflow weir, a main packing basket 5, an annular auxiliary packing basket 6, and a guide bucket 11. A packing pool 2 is provided at the center of the packing frame 1. The main packing basket 5 for organizing the packing is provided inside the packing pool 2. The main packing basket 5 has a main packing groove 501 for accommodating the packing inside. An annular overflow weir 4 is fitted at the outer end of the packing pool 2. An annular overflow pool 3 is provided at the outer end of the annular overflow weir 4. An annular auxiliary packing basket 6 for receiving the wall flow effect generated by the diverter is provided above the annular overflow pool 3. The auxiliary packing groove 601 for accommodating the packing is provided inside the annular auxiliary packing basket 6. A guide bucket 11 is provided at the lower edge of the packing frame 1.

[0018] An overflow guide angle 12 is provided on the top of the side of the annular overflow weir 4 near the packing pool 2, and a guide slope 13 is provided on the side of the annular overflow weir 4 near the annular overflow pool 3. Multiple sets of first through holes 10 are provided around the bottom of the annular overflow pool 3. The overflow guide angle 12 can guide the liquid that has not fully reacted in the main packing area to flow smoothly into the annular overflow pool 3, avoiding the formation of turbulence or stagnation of liquid in the edge area. The guide slope 13 can make the liquid entering the annular overflow pool 3 flow orderly along the slope, reduce local liquid flow impact, and improve the uniformity of liquid distribution in the auxiliary packing area.

[0019] The bottom of the inner wall of the packing tank 2 is provided with a first support ring 8 corresponding to the main packing basket 5, and the top of the outer wall of the annular overflow tank 3 is provided with a second support ring 9 corresponding to the annular auxiliary packing basket 6. The first support ring 8 provides stable support for the main packing basket 5, ensuring that the main packing basket 5 is fixed in position during the reaction process, and the second support ring 9 forms a precise limit for the annular auxiliary packing basket 6.

[0020] The upper end of the annular overflow weir 4 is symmetrically provided with two sets of arc-shaped support blocks 14 that cooperate with the second support ring 9. The side of the arc-shaped support block 14 near the second support ring 9 has a support groove 15 that is horizontal with the second support ring 9. The support strength of the annular auxiliary filling basket 6 is further enhanced by the cooperation between the arc-shaped support block 14 and the second support ring 9.

[0021] Multiple sets of connecting rods 16 are evenly provided at the bottom of the bracket 15, and a connecting seat 17 corresponding to the connecting rod 16 is provided at the upper end of the annular overflow weir 4. The connection between the arc-shaped support block 14 and the annular overflow weir 4 is achieved through the cooperation of the connecting rod 16 and the connecting seat 17, thereby improving the load-bearing capacity of the arc-shaped support block 14.

[0022] An overflow channel 18 is provided between the overflow weir and the arc-shaped support block 14. The packing pool 2 and the annular overflow pool 3 are connected through the overflow channel 18. The overflow channel 18 provides a precise diversion channel for excess liquid in the packing pool 2, ensuring that the liquid can flow orderly from the main packing area into the annular auxiliary packing area. Through the connection design of the overflow channel 18, the controllable circulation of liquid in the main and auxiliary packing areas is realized, further optimizing the liquid flow distribution and reducing the risk of local flooding or gas-liquid short circuit.

[0023] Both the main packing tank 501 and the auxiliary packing tank 601 have multiple sets of second through holes 19 evenly opened at their bottoms. The outer end of the packing frame 1 is fitted with an installation ring 7. The liquid that has passed through the main reaction can flow downwards evenly through the second through holes 19 at the bottom of the main packing tank 501, ensuring that the gas and liquid phases in the main packing area can fully contact and transfer mass smoothly. The second through holes 19 at the bottom of the auxiliary packing tank 601 discharge the liquid overflowing from the main packing tank 501 and the liquid processed by the auxiliary packing tank 601 downwards, and guide it to the next stage re-divider in conjunction with the guide bucket 11.

[0024] During operation, the staff first loads the packing materials required for the catalytic reaction into the main packing trough 501 of the main packing basket 5 and the auxiliary packing trough 601 of the annular auxiliary packing basket 6. The main packing trough 501 is filled with large-sized, high-efficiency mass transfer packing materials to ensure the mass transfer efficiency of the main reaction. The auxiliary packing trough 601 is filled with small-sized, high-specific-surface-area packing materials, which are specifically used to treat unreacted liquids generated by the wall flow effect. During loading, it is necessary to ensure that the packing materials are evenly distributed to avoid local accumulation.

[0025] Then, place the main packing basket 5, which is filled with packing material, on the first support ring 8 at the bottom of the inner wall of the packing pool 2 to ensure that the position of the main packing basket 5 is fixed. Next, place the annular auxiliary packing basket 6 on the second support ring 9 at the top of the outer wall of the annular overflow pool 3, and at the same time, make the lower end of the annular auxiliary packing basket 6 cooperate with the groove 15 of the arc-shaped support block 14. The stability of the annular auxiliary packing basket 6 is further enhanced by the connection between the connecting rod 16 and the connecting seat 17. Finally, check whether the guide bucket 11 is installed firmly to ensure that it can guide the liquid flow direction normally.

[0026] After the reaction begins, the gas and liquid phases enter from the top of the tower. The liquid is sprayed by the distributor, and the gas flows upward in a countercurrent manner. A catalytic reaction occurs in the main packing tank 501, and the liquid flows downward through the second through hole 19 at the bottom. Excess liquid crosses the overflow weir through the overflow guide angle 12 and smoothly enters the annular overflow pool 3 through the guide slope 13. The liquid flowing down the tower wall is intercepted by the annular auxiliary packing basket 6 and reacts in the auxiliary packing tank 601. After treatment, the liquid is discharged through the second through hole 19 at the bottom. The liquid in the overflow pool enters the guide bucket 11 through the first through hole 10 and is guided to the next stage redistributor.

[0027] Its working principle is as follows: In the main packing area, the main packing basket 5 is stably supported by the first support ring 8. The packing in the main packing tank 501 provides sufficient contact area for the gas and liquid phases. After the liquid enters the main packing area, it is fully mixed with the packing and undergoes the main catalytic reaction. When the liquid volume exceeds the carrying capacity of the main packing area, the treated excess liquid flows smoothly into the annular overflow tank 3 through the overflow guide angle 12 on the overflow weir. The guide slope 13 in the annular overflow tank 3 makes the liquid flow in an orderly manner and enter the auxiliary packing tank 601 of the annular auxiliary packing basket 6. The packing in the auxiliary packing tank 601 is specially used to treat the unreacted liquid flowing down the wall, thereby improving the overall utilization rate of the packing. The second through hole 19 at the bottom of the main packing tank 501 and the auxiliary packing tank 601 ensures that the liquid after the reaction can flow downwards uniformly. Together with the guide bucket 11, the liquid is guided to the next stage re-diverter, realizing the step-by-step mass transfer and circulation of the liquid. In addition, the cooperation between the arc-shaped support block 14 and the second support ring 9 enhances the support strength of the annular auxiliary packing basket 6, ensuring the stability of the packing position during the reaction process and avoiding the displacement or accumulation of the packing. The design of the overflow tank 18 provides a precise diversion channel for the liquid, realizing the controllable circulation of the liquid in the main and auxiliary packing areas, reducing the risk of local flooding or gas-liquid short circuit, and ensuring the stability and efficiency of the reaction.

[0028] Its beneficial effects are significant. This application sets up a main packing basket 5 and an annular auxiliary packing basket 6. The main packing area of ​​the main packing basket 5 ensures the mass transfer efficiency of the main reaction, while the auxiliary packing area of ​​the annular auxiliary packing basket 6 is specifically designed to handle unreacted liquid generated by the wall flow effect. This allows liquid that was not fully reacted due to the wall flow effect to be reused, greatly improving the overall utilization rate of the packing. The overflow weir structure realizes the orderly diversion and circulation of liquid, reducing the occurrence of local flooding or gas-liquid short circuits, making the reaction more complete, thereby improving the reaction conversion rate and efficiency. It effectively solves the problem of uneven liquid distribution in the central and edge areas of traditional single packing support plates. The liquid can flow orderly in the main and auxiliary packing areas, reducing the phenomenon of liquid flowing down the tower wall, and making the gas-liquid two-phase contact more complete.

Claims

1. A high-efficiency packing device for acrylic polyol continuous catalytic reaction, comprising a packing frame (1); characterized in that, It also includes an overflow weir, a main packing basket (5), an annular auxiliary packing basket (6) and a guide bucket (11); a packing pool (2) is provided in the center of the packing frame (1), a main packing basket (5) for organizing the packing is provided inside the packing pool (2), a main packing groove (501) for accommodating the packing is provided inside the main packing basket (5), an annular overflow weir (4) is provided at the outer end of the packing pool (2), an annular overflow pool (3) is provided at the outer end of the annular overflow weir (4), an annular auxiliary packing basket (6) for receiving the wall flow effect generated by the diverter is provided above the annular overflow pool (3), an auxiliary packing groove (601) for accommodating the packing is provided inside the annular auxiliary packing basket (6), and a guide bucket (11) is provided at the lower edge of the packing frame (1).

2. A high efficiency packing device for continuous catalytic reaction of acrylic polyol as claimed in claim 1, wherein, An overflow weir (4) has an overflow guide angle (12) on the top of the side near the filling pool (2), and a guide slope (13) is provided on the side of the annular overflow weir (4) near the annular overflow pool (3). Multiple sets of first through holes (10) are provided around the bottom of the annular overflow pool (3).

3. A high efficiency packing device for continuous catalytic reaction of acrylic polyol as claimed in claim 2, wherein, The bottom of the inner wall of the filling pool (2) is provided with a first support ring (8) corresponding to the main filling basket (5), and the top of the outer wall of the annular overflow pool (3) is provided with a second support ring (9) corresponding to the annular auxiliary filling basket (6).

4. The high efficiency packing device for continuous catalytic reaction of acrylic polyol according to claim 3, characterized in that, The upper end of the annular overflow weir (4) is symmetrically provided with two sets of arc-shaped blocks (14) that cooperate with the second support ring (9). The side of the arc-shaped block (14) close to the second support ring (9) is provided with a groove (15) that is horizontal to the second support ring (9).

5. A high efficiency packing device for continuous catalytic process of acrylic polyol as claimed in claim 4, wherein, Multiple sets of connecting rods (16) are evenly provided at the bottom of the tray (15), and a connecting seat (17) corresponding to the connecting rod (16) is provided at the upper end of the annular overflow weir (4).

6. A high efficiency packing device for continuous catalytic process of acrylic polyol as claimed in claim 5, wherein, An overflow channel (18) is provided between the overflow weir and the arc-shaped support block (14), and the filling pool (2) and the annular overflow pool (3) are connected through the overflow channel (18).

7. The high-efficiency packing device for continuous catalytic reaction of acrylic polyols according to claim 1, characterized in that, The bottom of both the main packing trough (501) and the auxiliary packing trough (601) is evenly provided with multiple sets of second through holes (19), and the outer end of the packing frame (1) is fitted with an installation ring (7).

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