A liquid distributor for distillation columns
Patent Information
- Application Number
- CN202521288764.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-06-23
AI Technical Summary
[0003]本实用新型的目的在于提供一种精馏塔液体分布器，以解决上述背景技术中提出的槽式液体分布器面临的一个突出问题是液体初始分配不均匀，这主要是由于进液管设计不合理导致液流直接冲击分布槽侧壁，形成涡流和不稳定流动状态，使得靠近进液口区域的分布孔流量显著高于远端，这种不均匀分布会直接影响塔器的传质效率的问题
[0009]与现有技术相比，本实用新型的有益效果是：代替原有的槽式液体分布器，通过对液体输入方式进行重新设计，解决液体初始分配不均匀的问题，进液管设计更加合理，减少液流直接冲击分布槽侧壁，减少涡流和不稳定流动状态的形成，保证塔器的传质效率。
Smart Images
Figure CN224777440U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical liquid distributor technology, specifically to a distillation column liquid distributor. Background Technology
[0002] The liquid distributor in a distillation column is a key component in the distillation process, primarily used to ensure uniform liquid distribution across the packing layer or trays to improve mass transfer efficiency. Its core function is to evenly distribute the feed liquid across the entire column cross-section through specific structural design, avoiding undesirable phenomena such as channeling and wall flow. A high-quality distributor must possess characteristics such as low resistance, anti-clogging, and ease of maintenance, and be adaptable to different operating loads. Its design must comprehensively consider liquid properties, column diameter, and packing type, and it is typically manufactured using corrosion-resistant materials. Currently, the most commonly used liquid distributors are trough-type liquid distributors. A prominent problem with trough-type liquid distributors is uneven initial liquid distribution. This is mainly due to improper inlet pipe design, causing the liquid flow to directly impact the sidewalls of the distribution trough, forming eddies and unstable flow states. This results in a significantly higher flow rate near the inlet compared to the far end, and this uneven distribution directly affects the column's mass transfer efficiency. Utility Model Content
[0003] The purpose of this invention is to provide a liquid distributor for a distillation column, which solves a prominent problem faced by the trough-type liquid distributor mentioned in the background art: uneven initial liquid distribution. This is mainly due to the unreasonable design of the inlet pipe, which causes the liquid flow to directly impact the side wall of the distribution trough, forming eddies and unstable flow states. As a result, the flow rate of the distribution orifice near the inlet is significantly higher than that at the far end. This uneven distribution will directly affect the mass transfer efficiency of the column.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a distillation column liquid distributor, comprising a first distribution tank and a second distribution tank, a distribution pipe being provided above the first distribution tank and the second distribution tank, and distribution grooves being uniformly provided at the lower ends of the first distribution tank and the second distribution tank, the outer ends of the distribution grooves being arranged in a circular pattern, and connecting seats being provided between the distribution grooves and at positions corresponding to the first distribution tank and the second distribution tank, the first distribution tank and the second distribution tank being fixedly connected to the connecting seats by connecting bolts, through holes being opened on the lower walls of the first distribution tank and the second distribution tank at positions corresponding to the distribution grooves, distribution holes being opened on the lower walls of the distribution grooves, overflow grooves starting from the upper ends of the front and rear side walls of the distribution grooves, and sieve plates being provided at the lower inner ends of the first distribution tank, the second distribution tank and the distribution grooves.
[0005] Preferably, the diversion pipe has a U-shaped structure design, and support seats are provided at both ends of the U-shaped structure between the diversion pipe and the first diversion channel and the second diversion channel. The output end of the reducer is connected to the outer side of the middle position of the diversion pipe through a flange, and the input end of the reducer is connected to the main pipe through a flange.
[0006] Preferably, the sieve plate is provided with support legs bent downwards at all four corners, and the sieve plate has space between itself and the first diversion channel, the second diversion channel and the lower wall of the distribution channel through the support legs.
[0007] Preferably, the lower end of the support base abuts against the upper surface of the sieve plate inside the first diversion channel and the second diversion channel.
[0008] Preferably, the two ends of the first diversion channel and the second diversion channel are respectively arranged to correspond to the two ends of the distribution channels on the front and rear sides.
[0009] Compared with the prior art, the beneficial effects of this utility model are: it replaces the original trough-type liquid distributor, solves the problem of uneven initial liquid distribution by redesigning the liquid input method, the liquid inlet pipe design is more reasonable, reduces the direct impact of liquid flow on the side wall of the distribution trough, reduces the formation of eddies and unstable flow states, and ensures the mass transfer efficiency of the tower. Attached Figure Description
[0010] Figure 1 This is an isometric view of the main structure of this utility model;
[0011] Figure 2 This is a front sectional view of the main structure of this utility model;
[0012] Figure 3 This is a front view schematic diagram of the main structure of this utility model;
[0013] Figure 4 This is a top view of the main structure of this utility model.
[0014] In the diagram: 1-Diversion channel 1, 2-Diversion channel 2, 3-Diversion pipe, 4-Distribution channel, 5-Connecting seat, 6-Connecting bolt, 7-Through hole, 8-Distribution hole, 9-Overflow channel, 10-Screen plate, 11-Support seat, 12-Reducing pipe, 13-Main pipe, 14-Support leg. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Please see Figure 1-4 This utility model provides a liquid distributor for a distillation column, including a first distribution channel 1 and a second distribution channel 2. A distribution pipe 3 is provided between the upper parts of the first distribution channel 1 and the second distribution channel 2. Distribution channels 4 are uniformly provided at the lower ends of the first distribution channel 1 and the second distribution channel 2. The outer ends of the distribution channels 4 are arranged in a circular shape. A connecting seat 5 is provided between the distribution channels 4 and at positions corresponding to the first distribution channel 1 and the second distribution channel 2. The first distribution channel 1 and the second distribution channel 2 are fixedly connected to the connecting seat 5 by connecting bolts 6. Through holes 7 are opened on the lower walls of the first distribution channel 1 and the second distribution channel 2 at positions corresponding to the distribution channels 4. Distribution holes 8 are opened on the lower walls of the distribution channels 4. Overflow channels 9 are provided at the upper ends of the front and rear side walls of the distribution channels 4. Screen plates 10 are provided at the lower inner ends of the first distribution channel 1, the second distribution channel 2 and the distribution channels 4.
[0017] In use, the distribution tank 4 is fixedly connected to the lower end of the first diversion tank 1 and the second diversion tank 2 by the fixing bolt 6 through the connecting seat 5. The liquid to be distributed is diverted to the interior of the first diversion tank 1 and the second diversion tank 2 through the diversion pipe 3. The first diversion tank 1 and the second diversion tank 2 are respectively set in the middle of the distribution tank 4 near both sides. The liquid inside the first diversion tank 1 and the second diversion tank 2 flows into the interior of the distribution tank 4 through the through hole 7, so that the liquid flowing into the distribution tank 4 from the first diversion tank 1 and the second diversion tank 2 is better distributed to both sides of the distribution tank 4. The distribution hole 8 is set at the lower end of the distribution tank 4 to better distribute the liquid onto the packing. The overflow tank 9 is set at the upper end of the distribution tank 4. When the liquid level exceeds the side wall of the distribution tank 4, the liquid is output to the outside through the overflow tank 9. The sieve plate 10 is set inside the first diversion tank 1, the second diversion tank 2 and the distribution tank 4 to improve the uniformity of liquid distribution.
[0018] The diversion pipe 3 has a U-shaped structure. Both ends of the U-shaped structure of the diversion pipe 3 are provided with support seats 11 between the first diversion channel 1 and the second diversion channel 2. The output end of the reducer pipe 12 is connected to the outer side of the middle position of the diversion pipe 3 through a flange. The input end of the reducer pipe 12 is connected to the main pipe 13 through a flange. The diversion pipe 3 is set above the first diversion channel 1 and the second diversion channel 2 through the support seats 11. The large-diameter main pipe 13 is reduced in diameter by the reducer pipe 12 and then connected to the diversion pipe 3.
[0019] The sieve plate 10 is provided with support legs 14 bent downwards at all four corners. The sieve plate 10 has a space between itself and the lower wall of the first diversion channel 1, the second diversion channel 2 and the distribution channel 4 through the support legs 14. The sieve plate 10 is set inside the first diversion channel 1, the second diversion channel 2 and the distribution channel 4 through the support legs 14, leaving a flow space.
[0020] The lower end of the support base 11 abuts against the upper surface of the sieve plate 10 inside the first diversion channel 1 and the second diversion channel 2, thereby supporting the diversion pipe 3.
[0021] The two ends of the No. 1 diversion channel 1 and the No. 2 diversion channel 2 are correspondingly set with the two ends of the front and rear distribution channels 4, making the overall structure more regular and maximizing the distance between the No. 1 diversion channel 1 and the No. 2 diversion channel 2.
[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A liquid distributor for a distillation column, characterized in that: It includes a first diversion channel (1) and a second diversion channel (2). A diversion pipe (3) is provided between the upper parts of the first diversion channel (1) and the second diversion channel (2). Distribution channels (4) are evenly provided at the lower ends of the first diversion channel (1) and the second diversion channel (2). The outer ends of the distribution channels (4) are arranged in a circular shape. Connecting seats (5) are provided between the distribution channels (4) and at positions corresponding to the first diversion channel (1) and the second diversion channel (2). The second diversion channel (2) is fixedly connected to the connecting seat (5) by connecting bolts (6). The lower walls of the first diversion channel (1) and the second diversion channel (2) are provided with through holes (7) at positions corresponding to the distribution channel (4). The lower wall of the distribution channel (4) is provided with distribution holes (8). The upper ends of the front and rear side walls of the distribution channel (4) are provided with overflow channels (9). The lower ends of the first diversion channel (1), the second diversion channel (2) and the distribution channel (4) are all provided with sieve plates (10).
2. The distillation column liquid distributor according to claim 1, characterized in that: The diversion pipe (3) is designed in a U-shape. Both ends of the U-shape of the diversion pipe (3) are provided with support seats (11) between the first diversion channel (1) and the second diversion channel (2). The output end of the reducer (12) is connected to the outer side of the middle position of the diversion pipe (3) through a flange. The input end of the reducer (12) is connected to the main pipe (13) through a flange.
3. A distillation column liquid distributor according to claim 1, characterized in that: The sieve plate (10) is provided with support legs (14) bent downward at each of its four corners. The sieve plate (10) has a space between itself and the lower wall of the first diversion channel (1), the second diversion channel (2) and the distribution channel (4) through the support legs (14).
4. A distillation column liquid distributor according to claim 2, characterized in that: The lower end of the support base (11) abuts against the upper surface of the sieve plate (10) inside the first diversion channel (1) and the second diversion channel (2).
5. A distillation column liquid distributor according to claim 1, characterized in that: The two ends of the No. 1 diversion channel (1) and the No. 2 diversion channel (2) are respectively set with the two ends of the front and rear distribution channels (4).