Liquid distributor for packed tower

Abstract

The present invention relates to a liquid distributor for a packed tower, comprising a distribution pipe, a primary distribution trough, a secondary distribution trough and a second connecting plate, wherein the distribution pipe is arranged above the primary distribution trough, and the secondary distribution trough and the primary distribution trough are arranged vertically and connected together by bolts through the second connecting plate. The beneficial effects are as follows: the device of the invention adopts a three-stage distribution process, wherein the primary distribution trough adopts a channel steel structure which is both a liquid distribution trough and a support beam, thereby reducing the height of the packed tower, and adopts a two-stage orifice plate distribution, which can effectively improve the uniformity of liquid distribution, has a compact structure, and is easy to install and maintain.

Description

Technical Field

[0001] The invention relates to a liquid distributor in the technical field of chemical equipment, in particular to a liquid distributor for a packed tower. Background Art

[0002] Packed towers are commonly used gas-liquid mass transfer equipment in chemical unit operations. They have the advantages of low pressure drop, large flux, high efficiency, and strong adaptability, and are widely used in the chemical industry. The liquid phase of the packed tower requires uniform spraying, otherwise it will directly affect the contact efficiency of the packing surface. At present, conventional liquid distributors generally use external support beams to support the distributor, which increases the tower height. Summary of the invention

[0003] In order to overcome the defects of the prior art, the technical problem solved by the present invention is to provide a liquid distributor for a packed tower, which adopts a three-stage distribution process, wherein the first-stage distribution trough adopts a channel steel structure which is both a liquid distribution trough and a support beam, thereby reducing the height of the packed tower, and adopts a two-stage orifice plate distribution, which can effectively improve the uniformity of liquid distribution, has a compact structure, and is easy to install and maintain.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A liquid distributor for a packed tower, comprising a distribution pipe, a primary distribution trough, a secondary distribution trough and a second connecting plate, characterized in that the distribution pipe is composed of a flange, a main pipe, a branch pipe and a support, wherein the support is welded to the inner wall of the tower body, one end of the main pipe is seated on the support, and the other end is fixedly connected to the liquid inlet pipe extending into the tower body through the flange by bolts, and a plurality of branch pipes are evenly distributed at the lower part of the main pipe and are connected to the main pipe;

[0006] The first-level distribution trough is composed of a connecting plate 1, a channel steel beam, a bottom plate, a supporting beam 1, a weir plate 1, an orifice plate 1 and an end plate 1, wherein the connecting plate 1 is composed of two pieces symmetrically welded on the inner wall of the tower body, and the two ends of the bottom plate are fixedly connected to the connecting plate 1 by bolts; the channel steel beams are two, arranged back to back, and the two ends are fixedly connected to the connecting plate 1 by bolts, and the lower part is fixedly connected to the bottom plate by bolts; the supporting beam 1 is fixedly connected to the channel steel beam by bolts, the weir plate 1 is located on the supporting beam 1 and the two ends are connected to the connecting plate 1 by bolts; the orifice plate 1 is consistent in number with the branch pipes of the distribution pipe and is located directly below the branch pipes, the orifice plate 1 is welded to the weir plate 1, and the end plate 1 is composed of two pieces sealed at the two ends of the orifice plate 1 and welded to the orifice plate 1 and the weir plate 1 respectively;

[0007] The secondary distribution trough is composed of a trough plate, a second support beam, a second weir plate, a second orifice plate, a second connecting plate, a connecting plate, a second end plate and a reinforcing plate, wherein the trough plate is vertically arranged with the primary distribution trough, and both ends of the trough plate are welded and sealed with the second end plate and fixedly connected with the connecting plate welded on the inner wall of the tower body by bolts; the second support beam is fixedly connected with the trough plate by bolts, the second weir plate is seated on the second support beam, the second orifice plate is welded and connected with the second weir plate, and the reinforcing plate is a plurality of pieces evenly distributed on the trough plate;

[0008] The second connecting plate is welded below the channel steel beam, and the primary distribution trough and the secondary distribution trough are connected together by bolts through the second connecting plate.

[0009] The bottom plate is provided with a plurality of evenly distributed slots.

[0010] The number of the secondary distribution slots is consistent with the slot holes opened on the bottom plate, and the orifice plate 2 is located directly below the slot holes opened on the bottom plate.

[0011] The trough plate is a trough structure made of steel plate, and a plurality of evenly distributed liquid distribution holes are opened on the bottom and side surfaces.

[0012] The connecting plate 1 is a groove-shaped structure.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1) Channel steel beams are used as the primary distribution trough and also as support beams, which reduces the tower height;

[0015] 2) The connecting plate adopts a groove structure, which allows the gas from the lower part of the tower to pass smoothly and reduce gas resistance;

[0016] 3) The use of two-stage orifice plate distribution, namely the primary distribution trough and the secondary distribution trough, can effectively improve the uniformity of liquid distribution;

[0017] 4) The main components are connected by bolts, which is convenient for installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic front view of the structural principle of the present invention;

[0019] Figure 2 It is a schematic top view of the structural principle of the present invention (without the distribution pipe, half-section);

[0020] Figure 3 yes Figure 1 Schematic diagram of the structural principle in the AA section;

[0021] Figure 4 yes Figure 2 Schematic diagram of the structural principle in the middle BB section;

[0022] Figure 5 This is a schematic front view of the structural principle of the weir plate 1 of the present invention;

[0023] Figure 6 This is a left side view schematically showing the structural principle of the weir plate 1 of the present invention;

[0024] Figure 7 This is a schematic front view of the structural principle of the weir plate 2 of the present invention;

[0025] Figure 8 This is a left side view showing the structural principle of the weir plate 2 of the present invention;

[0026] Fig. 9 This is a schematic front view of the structural principle of the grooved plate of the present invention;

[0027] Fig.10 A schematic top view of the structural principle of the trough plate of the present invention.

[0028] In the figure: 1-distribution pipe 11-flange 12-main pipe 13-branch pipe 14-support 2-first-stage distribution slot 21-connecting plate 1 22-channel steel beam 23-bottom plate 231-slot hole 24-support beam 1 25-weir plate 1 26-orifice plate 1 27-end plate 1 3-second-stage distribution slot 31-trough plate 311-liquid distribution hole 32-support beam 2 33-weir plate 2 34-orifice plate 2 35-connecting plate 2 36-connecting plate 37-end plate 2 38-reinforcement plate DETAILED DESCRIPTION

[0029] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0030] See Figure 1-Figure 10 As shown, the present invention relates to a liquid distributor for a packed tower, comprising a distribution pipe 1, a primary distribution trough 2, a secondary distribution trough 3 and a connecting plate 35, wherein the distribution pipe 1 is composed of a flange 11, a main pipe 12, a branch pipe 13 and a support 14, wherein the support 14 is welded to the inner wall of the tower body, one end of the main pipe 12 is seated on the support 14, and the other end is fixedly connected to the liquid inlet pipe extending into the tower body through the flange 11 by bolts, and a plurality of branch pipes 13 are evenly distributed at the lower part of the main pipe 12 and communicated with the main pipe 12, serving as a liquid circulation channel;

[0031] The primary distribution trough 2 is composed of a connecting plate 21, a channel steel beam 22, a bottom plate 23, a support beam 24, a weir plate 25, a orifice plate 26 and an end plate 27, wherein the connecting plate 21 is two pieces symmetrically welded on the inner wall of the tower body, and the two ends of the bottom plate 23 are fixedly connected to the connecting plate 21 by bolts; the channel steel beams 22 are two, arranged back to back, and the two ends are fixedly connected to the connecting plate 21 by bolts, and the lower part is fixedly connected to the bottom plate 23 by bolts; the support beam 24 is fixedly connected to the channel steel beam 22 by bolts, and the weir plate 25 is located on the support beam 24 and the two ends are connected to the connecting plate 21 by bolts; the orifice plate 26 is the same in number as the branch pipe 13 of the distribution pipe 1 and is located directly below the branch pipe 13, the orifice plate 26 is welded to the weir plate 25, and the end plate 27 is two pieces blocked at both ends of the orifice plate 26 and welded to the orifice plate 26 and the weir plate 25 respectively;

[0032] The secondary distribution trough 3 is composed of a trough plate 31, a second support beam 32, a second weir plate 33, a second orifice plate 34, a second connecting plate 35, a connecting plate 36, a second end plate 37 and a reinforcing plate 38, wherein the trough plate 31 is vertically arranged with the primary distribution trough 2, and both ends of the trough plate 31 are welded and blocked with the second end plate 37 and fixedly connected with the connecting plate 36 welded on the inner wall of the tower body by bolts; the second support beam 32 is fixedly connected with the trough plate 31 by bolts, the second weir plate 33 is located on the second support beam 32, the second orifice plate 34 is welded and connected with the second weir plate 33, and the reinforcing plate 38 is a plurality of pieces evenly distributed on the trough plate 31, which is used to improve the strength of the trough plate 31;

[0033] The second connecting plate 35 is welded below the channel steel beam 22 , and the primary distribution trough 2 and the secondary distribution trough 3 are connected together by bolts through the second connecting plate 35 .

[0034] The bottom plate 23 is provided with a plurality of evenly distributed slots 231 .

[0035] The number of the secondary distribution slots 3 is the same as the number of the slots 231 opened on the bottom plate 23 , and the orifice plate 2 34 is located directly below the slots 231 opened on the bottom plate 23 to receive the fluid dropped from the primary distribution slots 2 .

[0036] The trough plate 31 is a trough structure made of steel plate, and has a plurality of evenly distributed liquid distribution holes 311 on the bottom and side.

[0037] The connecting plate 1 21 is a groove-shaped structure, which allows the gas from the lower part of the tower body to pass smoothly and reduce gas resistance.

[0038] Working principle:

[0039] The liquid enters the orifice plate 26 (primary distribution) of the primary distribution tank 2 from several branches 13 of the distribution pipe 1, flows into the weir plate 25 after buffering, fully flows into the bottom of the primary distribution tank, passes through several slot holes 231 opened on the bottom plate 23, flows into the orifice plates 2 34 (secondary distribution) of several secondary distribution tanks 3, and then enters the weir plate 2 33, fully flows into the bottom of the secondary distribution tank, and from several evenly distributed liquid distribution holes 311 (tertiary distribution) opened at the bottom and side of the trough plate 31, the liquid smoothly enters the upper part of the packing in the tower, realizing uniform distribution of the liquid, so as to improve the gas-liquid mass transfer function.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A liquid distributor for a packed tower, comprising a distribution pipe, a primary distribution tank, a secondary distribution tank and a connecting plate, characterized in that: The distribution pipe is composed of a flange, a main pipe, a branch pipe and a support, wherein the support is welded to the inner wall of the tower body, one end of the main pipe is seated on the support, and the other end is fixedly connected to the liquid inlet pipe extending into the tower body through the flange with bolts, and a plurality of branch pipes are evenly distributed at the bottom of the main pipe and connected to the main pipe; The first-level distribution trough is composed of a connecting plate 1, a channel steel beam, a bottom plate, a supporting beam 1, a weir plate 1, an orifice plate 1 and an end plate 1, wherein the connecting plate 1 is composed of two pieces symmetrically welded on the inner wall of the tower body, and the two ends of the bottom plate are fixedly connected to the connecting plate 1 by bolts; the channel steel beams are two, arranged back to back, and the two ends are fixedly connected to the connecting plate 1 by bolts, and the lower part is fixedly connected to the bottom plate by bolts; the supporting beam 1 is fixedly connected to the channel steel beam by bolts, the weir plate 1 is located on the supporting beam 1 and the two ends are connected to the connecting plate 1 by bolts; the orifice plate 1 is consistent in number with the branch pipes of the distribution pipe and is located directly below the branch pipes, the orifice plate 1 is welded to the weir plate 1, and the end plate 1 is composed of two pieces sealed at the two ends of the orifice plate 1 and welded to the orifice plate 1 and the weir plate 1 respectively; The secondary distribution trough is composed of a trough plate, a second support beam, a second weir plate, a second orifice plate, a second connecting plate, a connecting plate, a second end plate and a reinforcing plate, wherein the trough plate is vertically arranged with the primary distribution trough, and both ends of the trough plate are welded and sealed with the second end plate and fixedly connected with the connecting plate welded on the inner wall of the tower body by bolts; the second support beam is fixedly connected with the trough plate by bolts, the second weir plate is seated on the second support beam, the second orifice plate is welded and connected with the second weir plate, and the reinforcing plate is a plurality of pieces evenly distributed on the trough plate; The second connecting plate is welded below the channel steel beam, and the primary distribution trough and the secondary distribution trough are connected together by bolts through the second connecting plate; The trough plate is a trough-shaped structure made of steel plate, and a plurality of evenly distributed liquid distribution holes are opened on the bottom and side; The connecting plate 1 is a groove-shaped structure.

2. A liquid distributor for a packed tower according to claim 1, characterized in that: The bottom plate is provided with a plurality of evenly distributed slots.

3. A liquid distributor for a packed tower according to claim 1, characterized in that: The number of the secondary distribution slots is consistent with the number of slot holes opened on the bottom plate, and the orifice plate 2 is located directly below the slot holes opened on the bottom plate.

Images