Liquid distributor of rectifying tower

Abstract

The liquid distributor comprises a main pipe, an upper branch pipe, a communicating pipe, a U-shaped pipe and a lower branch pipe, one end of the main pipe is fixedly connected with an inlet flange, the right lower side of the middle of the main pipe is fixedly connected with the upper end of the communicating pipe, the lower end of the communicating pipe is fixedly connected with the upper branch pipe, and the two ends of the upper branch pipe are both closed. The end, away from the inlet flange, of the main pipe is fixedly connected with a U-shaped pipe, the end, away from the main pipe, of the U-shaped pipe is fixedly connected with a lower branch pipe, and the end, away from the U-shaped pipe, of the lower branch pipe is closed. A plurality of third branch pipes are fixedly connected to one side of the upper branch pipe in the central axis direction. According to the tubular liquid distributor, the upper-layer mechanism and the lower-layer mechanism are used for distributing liquid entering a rectifying tower, and the first liquid outlet branch pipe and the third liquid outlet branch pipe which are arranged on the upper-layer mechanism and the lower-layer mechanism are perpendicular to each other, so that uniform and compact distribution of the liquid below gaps of all rows of branch pipes of the tubular liquid distributor is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of liquid distributor, concretely to a rectifying column liquid distributor. BACKGROUND

[0002] In the chemical rectification process, the tower internal part liquid distributor can evenly distribute the liquid material into the rectifying column to each tray or the filler layer, makes the gas liquid material in the tower fully contact, thereby improves the mass transfer, heat transfer efficiency of rectifying column. The quality of liquid initial distribution not only influences the mass transfer, heat transfer efficiency of tower, but also has big influence on the operation elasticity of tower. Therefore, the liquid distributor is the key internal part in the rectifying column. According to the structure shape, the liquid distributor can be pipe type, tank type, disc type and combined type. Among them, the pipe type liquid distributor is made of various shapes of perforated pipe, has the advantages of simple structure, high reliability, small resistance, convenient manufacturing and installation, is widely applied to the distribution of tower internal liquid in chemical industry, petroleum, pharmaceutical and other industries.

[0003] The pipe type liquid distributor is generally composed of a liquid inlet main pipe and several rows of branch pipes connected on both sides of the main pipe, and two rows (or more) of small holes are arranged symmetrically (or staggered) below each branch pipe with a certain spray angle. However, there is a certain gap between each row of branch pipes of the distributor with this structure, and even if multiple rows of small holes are provided in each branch pipe, it cannot meet the requirement of uniform and dense distribution of liquid below the gap between each row of branch pipes. SUMMARY

[0004] The purpose of the utility model is to provide a rectifying column liquid distributor, the distributor uses upper and lower two layers of mechanisms to distribute the liquid into the rectifying column, and the liquid first branch pipe and the third branch pipe arranged vertically on the upper and lower two layers of mechanisms, realize the uniform and dense distribution of liquid below the gap between each row of branch pipes of the pipe type liquid distributor.

[0005] To achieve the above purpose, a rectifying column liquid distributor is provided, which comprises a main pipe, an upper branch pipe, a communication pipe, a U-shaped pipe and a lower branch pipe, one end of the main pipe is fixedly connected with an inlet flange, the lower side of the middle of the main pipe is fixedly connected with the upper end of the communication pipe, the lower end of the communication pipe is fixedly connected with the upper branch pipe, both ends of the upper branch pipe are closed, the end of the main pipe away from the inlet flange is fixedly connected with the U-shaped pipe, the end of the U-shaped pipe away from the main pipe is fixedly connected with the lower branch pipe, and the end of the lower branch pipe away from the U-shaped pipe is closed.

[0006] A plurality of third branch pipes are fixedly connected on one side of the upper branch pipe along the central axis direction, a plurality of first branch pipes are fixedly connected on the other side of the upper branch pipe along the central axis direction, a plurality of second branch pipes are fixedly connected on both sides of the lower branch pipe along the central axis direction, and the other end of the first branch pipe, the second branch pipe and the third branch pipe is closed.

[0007] According to the liquid distributor of the rectifying tower, the upper branch pipe is located vertically below the main pipe, and the lower branch pipe is located vertically below the upper branch pipe.

[0008] According to the liquid distributor of the rectifying tower, the lengths of the first branch pipe and the second branch pipe on the upper branch pipe gradually decrease from the middle to the end.

[0009] According to the liquid distributor of the rectifying tower, the length of the second branch pipe on the lower branch pipe gradually decreases from the middle to the end.

[0010] According to the liquid distributor of the rectifying tower, the bottom end of the second branch pipe is uniformly provided with a plurality of second small holes.

[0011] According to the liquid distributor of the rectifying tower, the first small hole and the third small hole are respectively arranged below the first branch pipe and the third branch pipe.

[0012] Compared with the prior art, the liquid distributor has the following beneficial effects:

[0013] The liquid distributor has the following beneficial effects:

[0014] The additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] The present application will be further described below in combination with the drawings and embodiments.

[0016] Fig. 1 FIG. 1 is a perspective view of the liquid distributor of the rectifying tower according to the present application;

[0017] Fig. 2 FIG. 4 is a bottom view of the liquid distributor of the rectifying tower according to the present application;

[0018] Fig. 3 FIG. 5 is a top view of the liquid distributor of the rectifying tower according to the present application.

[0019] In the figure: 1, main pipe; 2, first branch pipe; 3, upper branch pipe; 4, second branch pipe; 5, lower branch pipe; 6, third branch pipe; 7, communication pipe; 8, inlet flange; 9, U-shaped pipe; 10, first small hole; 11, second small hole; 12, third small hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0021] Please refer to Figs. 1-3 The utility model provides a technical scheme: a rectifying tower liquid distributor, include: main pipe 1, upper branch pipe 3, communication pipe 7, U-shaped pipe 9 and lower branch pipe 5, one end of main pipe 1 is fixedly connected with inlet flange 8, liquid flows into main pipe 1 from inlet flange 8, after entering main pipe 1, it flows into upper branch pipe 3 through communication pipe 7, the lower side of the middle of main pipe 1 is fixedly connected with the upper end of communication pipe 7, the lower end of communication pipe 7 is fixedly connected with upper branch pipe 3, both ends of upper branch pipe 3 are closed, the end away from inlet flange 8 of main pipe 1 is fixedly connected with U-shaped pipe 9, liquid flows into lower branch pipe 5 through U-shaped pipe 9, and then flows out from the second small hole 11 of the second branch pipe 4 on both sides of lower branch pipe 5, the end away from main pipe 1 of U-shaped pipe 9 is fixedly connected with lower branch pipe 5, the end away from U-shaped pipe 9 of lower branch pipe 5 is closed, the length of the second branch pipe 4 on lower branch pipe 5 gradually shortens from the middle to the end, and a plurality of second small holes 11 are evenly formed in the bottom end of the second branch pipe 4.

[0022] A plurality of third branch pipes 6 are fixedly connected to one side of upper branch pipe 3 along the direction of the central axis, a plurality of first branch pipes 2 are fixedly connected to the other side of upper branch pipe 3 along the direction of the central axis, a plurality of second branch pipes 4 are fixedly connected to both sides of lower branch pipe 5 along the direction of the central axis, the other end of the first branch pipe 2, the second branch pipe 4 and the third branch pipe 6 is closed, upper branch pipe 3 is located directly below main pipe 1 and is perpendicular to main pipe 1, lower branch pipe 5 is located directly below upper branch pipe 3 and is parallel to main pipe 1, the length of the first branch pipe 2 and the second branch pipe 4 on upper branch pipe 3 gradually shortens from the middle to the end, and a first small hole 10 and a third small hole 12 are formed in the lower side of the first branch pipe 2 and the third branch pipe 6 respectively, and liquid flows out from the first small hole 10 and the third small hole 12 of the first branch pipe 2 and the third branch pipe 6 on both sides of upper branch pipe 3.

[0023] Working principle: liquid in the rectifying tower flows into the main pipe 1 from the inlet flange 8, enters the upper branch pipe 3 through the communication pipe 7 after entering the main pipe 1, then flows out from the first small hole 10 and the third small hole 12 of the first branch pipe 2 and the third branch pipe 6 on both sides of the upper branch pipe 3; at the same time, the remaining liquid flows into the lower branch pipe 5 through the U-shaped pipe 9, and then flows out from the second small hole 11 of the second branch pipe 4 on both sides of the lower branch pipe 5; finally, the liquid set to flow out through the first small hole 10, the second small hole 11 and the third small hole 12 can be uniformly and densely distributed on the tower plate and the filler layer of the rectifying tower. The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by ordinary skilled persons in the technical field to which the utility model belongs without departing from the purpose of the utility model.

Claims

1. A liquid distributor for a distillation column, characterized by, The utility model relates to a kind of pipe systems, including main pipe (1), upper branch pipe (3), communication pipe (7), U-shaped pipe (9) and lower branch pipe (5), one end of the main pipe (1) is fixedly connected with import flange (8), the upper end of communication pipe (7) is fixedly connected with the middle lower side of the main pipe (1), the lower end of communication pipe (7) is fixedly connected with upper branch pipe (3), both ends of the upper branch pipe (3) are closed, the one end of the main pipe (1) away from import flange (8) is fixedly connected with U-shaped pipe (9), the one end of U-shaped pipe (9) away from the main pipe (1) is fixedly connected with lower branch pipe (5), the one end of the lower branch pipe (5) away from U-shaped pipe (9) is closed; The upper branch pipe (3) is fixedly connected with several third branch pipes (6) on one side along the direction of central axis, the upper branch pipe (3) is fixedly connected with several first branch pipes (2) on the other side along the direction of central axis, the lower branch pipe (5) is fixedly connected with several second branch pipes (4) on both sides along the direction of central axis, the other end of the first branch pipe (2), the second branch pipe (4) and the third branch pipe (6) is closed.

2. A liquid distributor for a distillation column as defined in claim 1, characterized in that: The upper branch pipe (3) is located directly below the main pipe (1), and is perpendicular to the main pipe (1), the lower branch pipe (5) is located directly below the upper branch pipe (3), and is parallel to the main pipe (1).

3. A liquid distributor for a distillation column as defined in claim 1, wherein: The length of the first branch pipe (2) and the second branch pipe (4) on the upper branch pipe (3) gradually shortens from the middle to the end.

4. A liquid distributor for a distillation column as defined in claim 1, wherein: The length of the second branch pipe (4) on the lower branch pipe (5) gradually shortens from the middle to the end.

5. A liquid distributor for a distillation column as defined in claim 1, wherein: The bottom end of the second branch pipe (4) is uniformly provided with several second small holes (11).

6. A liquid distributor for a distillation column as defined in claim 1, wherein: The lower side of the first branch pipe (2) and the third branch pipe (6) is respectively provided with first small hole (10) and third small hole (12).

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