CN214810932U - Multi-nozzle water distribution device for packed tower - Google Patents

Abstract

The utility model relates to a multi-nozzle water distribution device for a packed tower, which comprises a water distribution pipe and a plurality of nozzles arranged in the packed tower, wherein the water distribution pipe comprises a main pipe connected and communicated with a system water inlet pipe and a plurality of water distribution branch pipes horizontally arranged, one end of each water distribution branch pipe is connected and communicated with the main pipe, the other end of each water distribution branch pipe is closed, and the lower part of each water distribution branch pipe close to the closed end is provided with a mounting hole for mounting the nozzle; the nozzles comprise connecting parts, spray holes and conical spiral flow guide surfaces communicated with the spray holes, and the connecting parts of the nozzles can be detachably arranged at mounting holes respectively corresponding to the water distribution branch pipes. The utility model discloses can improve the water distribution homogeneity of major diameter tower body to can avoid the nozzle scale deposit to block up, can satisfy the filtration liquid water evenly distributed's of high rigidity, high corrosivity demand, can compromise good manufacturability, economic nature and suitability simultaneously.

Description

Multi-nozzle water distribution device for packed tower

Technical Field

The utility model relates to a multinozzle water distribution device for packed tower belongs to packed tower technical field.

Background

The packed tower is a common continuous contact type device and can realize mass transfer and heat transfer of gas/liquid two phases. The liquid phase is sprayed onto the filler in the tower from top to bottom through the water distribution device, so that the surface of the liquid phase is wetted to form a flowing liquid film, and the liquid film has a larger specific surface area; the gas phase moves along the direction opposite to the liquid flow and fully contacts with the liquid film, so that the mass transfer and the heat transfer of the gas/liquid phases are realized. Under the action of gravity, the liquid phase flows downwards along the gaps between the packing elements, while the gas moves upwards. Therefore, it is very important to realize the uniform distribution of the liquid phase in the column packing and further achieve the purpose of full gas/liquid contact.

At present, common water distribution devices comprise a disk type, a shower type, a tooth groove type and the like. The water distribution of the disc-type water distributor is uniform, the disc-type water distributor is mostly used in a large-diameter tower, but the processing cost is high, and the risk of blocking the water distributor exists in the liquid phase due to high-hardness ions; the shower type water distribution device has the advantages of low cost and uniform spraying, but the coverage area is limited, and the shower type water distribution device can only be used in a tower body with a small diameter. The tooth-shaped water distributor can realize the effect of uniform water distribution in a large tower diameter, but the manufacturing process is complex and is not easy to maintain.

In the percolate industry, when water distribution is carried out on RO/DTRO concentrated solution, higher requirements are placed on a water distributor. Firstly, the concentrated solution contains high hardness ions such as calcium, magnesium and the like, and the water distributor has high risk of scaling and blockage; particularly, the method is influenced by the actual conditions of engineering, when the system is shut down/started up for many times due to unexpected reasons on site, the nozzle with a small aperture is more easily scaled, and for a non-pressurized liquid phase, the risk of blocking the nozzle exists in the past for a long time, so that the nozzle cannot normally work, and further the gas/liquid mass transfer and heat transfer effects are influenced. In addition, the high chloride ion content puts higher requirements on the corrosion resistance of the water distributor.

Disclosure of Invention

The utility model aims at providing a can improve the water distribution homogeneity of major diameter tower body to can avoid the nozzle scale deposit to block up, the multi-nozzle water distribution device that is used for the packed tower that the suitability is strong.

The utility model discloses a technical scheme who reaches above-mentioned purpose is: the utility model provides a multinozzle water distribution device for packed tower which characterized in that: the water distribution device comprises a water distribution pipe and a plurality of nozzles, wherein the water distribution pipe is arranged in a packed tower and comprises a main pipe which is connected and communicated with a system water inlet pipe and a plurality of water distribution branch pipes which are horizontally arranged, one end of each water distribution branch pipe is connected and communicated with the main pipe, the other end of each water distribution branch pipe is closed, and the lower part of each water distribution branch pipe, which is close to the closed end, is provided with a mounting hole for mounting the nozzles; the nozzles comprise connecting parts, spray holes and conical spiral flow guide surfaces communicated with the spray holes, and the connecting parts of the nozzles can be detachably arranged at mounting holes respectively corresponding to the water distribution branch pipes.

The utility model discloses its water distributor of water distribution device includes the water distribution branch pipe that advances water piping connection communicating person in charge and a plurality of horizontal cloth setting with the system, and the one end of each water distribution branch pipe with be responsible for and be connected and communicate with each other, the other end is the closed form to nearly blind end is equipped with the mounting hole that is used for installing the nozzle, consequently through the distance between reasonable nozzle, guarantees the uniform water distribution of target area, can realize being greater than the uniform water distribution of 1m major diameter tower body. The nozzle of the utility model further pressurizes the water flow through the spray holes, thereby playing good shunting and pressurizing atomization effects on the liquid phase, the conical spiral flow guide surface enables the involved air to be a continuous phase, and the liquid-phase water drops are dispersed phases which are broken by the liquid-phase water drops mechanically, so that the liquid water is atomized, and the uniformity of the initial water distribution can be improved; especially, the liquid which is initially distributed uniformly is lower than the bed layer through which the liquid which is initially distributed non-uniformly passes to reach the stable natural flow, so the mass transfer and heat transfer effects are better. The utility model discloses the nozzle can have strong washing away effect to the dirt layer that exists on the nozzle when playing the pressure boost to the liquid phase, can solve the problem that the nozzle scale deposit blockked up to improve system life. The utility model discloses a multinozzle water distribution device can satisfy the demand to the filtration liquid water distribution uniformity of high rigidity, high corrosivity in the packed tower that the diameter is greater than 1m tower footpath, can compromise good manufacturability, economic nature and suitability simultaneously.

Drawings

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of the multi-nozzle water distribution device for the packed tower of the present invention.

Fig. 2 is a schematic view of the structure in the direction a of fig. 1.

Fig. 3 is a schematic structural view of the nozzle of the present invention.

Wherein: 1-nozzle, 1-connecting part, 1-2-spray hole, 1-3-conical spiral diversion surface, 2-water distribution pipe, 2-1-water distribution branch pipe, 2-11-bulge, 2-main pipe, 2-21-main pipe flange, 3-system water inlet pipe, 3-1-connecting flange and 4-packed tower.

Detailed Description

As shown in figures 1 and 2, the utility model relates to a multi-nozzle water distribution device for a packed tower, including setting up water distributor 2 and a plurality of nozzle 1 in packed tower 4, water distributor 2 includes and is connected communicating being responsible for 2-2 and a plurality of horizontal distribution's water distribution branch pipe 2-1 with system's inlet tube 3, is responsible for and is equipped with and is responsible for flange 2-21 on 2-2, is connected with flange 3-1 on the system's inlet tube 3 through the fastener, and system's inlet tube 3 is connected with the intake pump, has certain pressure for the liquid phase that gets into in water distributor 2 in packed tower 4 through the intake pump of outside. The utility model discloses be responsible for 2-2 and each water distribution branch pipe 2-1 and be high temperature resistant and anticorrosive FRP pipe way, can be used to the filtration liquid of high rigidity, high chloride and handle the water distribution.

As shown in the figures 1 and 2, one end of each water distribution branch pipe 2-1 of the utility model is communicated with the main pipe 2-2, the other end is closed, each water distribution branch pipe 2-1 is provided with a mounting hole for mounting the nozzle 1 near the closed end, the nozzle 1 comprises a connecting part 1-1, a spray hole 1-2 and a conical spiral flow guide surface 1-3 communicated with the spray hole 1-2, the connecting part 1-1 of each nozzle 1 can be detachably mounted at the mounting hole of the corresponding water distribution branch pipe 2-1, thereby facilitating the disassembly and assembly of the nozzle 1. The liquid phase is distributed to each water distribution branch pipe 2-1 through the main pipe 2-2 to generate split flow, then the liquid phase is pressurized and split through the plurality of nozzles 1 on the same horizontal plane, and is fully mixed with the gas phase through the conical spiral flow guide surfaces 1-3 of the nozzles 1 to atomize the liquid phase, so that the effect of uniform water distribution is achieved, and meanwhile, due to the adoption of a non-hole type/fine-slit type water outlet mode, the problems of scaling and blockage of the nozzles 1 and cleaning caused by the blocking can be solved.

As shown in figures 1 and 2, the number of the water distribution branch pipes 2-1 of the utility model is 3-8, as shown in figure 2, four water distribution branch pipes 2-1 can be arranged, each water distribution branch pipe 2-1 is symmetrically connected and communicated along the central axis of the main pipe 2-2, the joint of each water distribution branch pipe 2-1 is provided with a middle mounting hole, a nozzle 1 is arranged at the middle mounting hole, the length L of each water distribution branch pipe 2-1 is 200-300 mm, such as 220mm and 250mm, the distance H from the nozzle center of each water distribution branch pipe 2-1 to the middle nozzle center is 180-280 mm, such as 200mm, 220mm and 250mm, because the water distribution branch pipes 2-1 are uniformly distributed outwards along the center of the main pipe 2-2, and the distance from the central line of the nozzle 1 on each support arm to the middle nozzle 1 is the same, each nozzle 1 shunts and pressurizes the liquid phase, the liquid phase is atomized to achieve the effect of uniform water distribution, the spraying coverage area of each nozzle 1 can reach a circle with the radius of about 0.3 m-0.5 m, and the spraying coverage area can be increased.

As shown in figures 1 and 2, the utility model discloses be equipped with arch 2-11 in each mounting hole department, have the internal thread hole in the mounting hole, connecting portion 1-1 of nozzle 1 is equipped with the external screw thread, and connecting portion 1-1 of nozzle 1 connects soon on the mounting hole, according to the flow size, conveniently changes the nozzle of joining in marriage not unidimensional, through 1 pressure boost reposition of redundant personnel backs of nozzle, and with the air mixture who is drawn into the continuous phase, make the dispersion of liquid phase water droplet and take place the atomizing, realize the initial evenly distributed of liquid phase.

As shown in FIG. 3, the nozzle 1 of the present invention is made of silicon carbide, the aperture ratio of the orifice 1-2 of the nozzle 1 to the aperture ratio of the water distribution branch pipe 2-1 is 0.3-0.6, such as the aperture ratio is 0.4, the length-diameter ratio of the orifice 1-2 of the nozzle 1 is 1.1-1.4, such as the length-diameter ratio is 1.2, so that the liquid phase entering the nozzle 1 is increased and divided. Therefore the utility model discloses a cross section that its liquid phase of multinozzle water distribution device passed through is reduced to the orifice cross-section of nozzle 1 by water distribution branch pipe 2-1 pipeline cross-section, and the cross-sectional area that passes through around the liquid phase obviously reduces promptly, so obtains the pressure boost when the nozzle is flowed through to the liquid phase to spout with the uniform velocity, form this kind of high-speed rotary motion of taper distribution liquid phase, can avoid the nozzle scale deposit. Furthermore, when the system is started again, the scouring force of the liquid phase may have an impact on the scale layer that may be present, further reducing the risk of nozzle fouling.

The utility model discloses during operation liquid phase carries out the person in charge 2-2 of water distribution pipe 2 from system's inlet tube 3, shunts in each water distribution branch pipe 2-1 with the flow unanimous basically again, then shunts and the pressure boost to the liquid phase through the orifice 1-2 that gets into nozzle 1, makes the liquid phase produce the atomizing through toper spiral water conservancy diversion face 1-3, reaches the even effect of water distribution.

Claims (6)

1. The utility model provides a multinozzle water distribution device for packed tower which characterized in that: the device comprises a water distribution pipe (2) and a plurality of nozzles (1) which are arranged in a packed tower, wherein the water distribution pipe (2) comprises a main pipe (2-2) which is communicated with a system water inlet pipe (3) and a plurality of water distribution branch pipes (2-1) which are horizontally arranged, one end of each water distribution branch pipe (2-1) is communicated with the main pipe (2-2), the other end of each water distribution branch pipe is closed, and the lower part of each water distribution branch pipe (2-1) close to the closed end is provided with a mounting hole for mounting the nozzle (1); the nozzles (1) comprise connecting parts (1-1), spray holes (1-2) and conical spiral flow guide surfaces (1-3) communicated with the spray holes (1-2), and the connecting parts (1-1) of the nozzles (1) can be detachably arranged at mounting holes respectively corresponding to the water distribution branch pipes (2-1).

2. The multi-nozzle water distribution device for a packed tower of claim 1, wherein: the main pipe (2-2) and each water distribution branch pipe (2-1) are high temperature resistant and corrosion resistant glass fiber reinforced plastic pipelines.

3. The multi-nozzle water distribution device for the packed tower according to claim 1 or 2, wherein: the number of the water distribution branch pipes (2-1) is 3-8, the water distribution branch pipes (2-1) are symmetrically connected and communicated along the central axis of the main pipe (2-2), a middle mounting hole is formed in the joint of the water distribution branch pipes (2-1), a nozzle (1) is mounted at the middle mounting hole, the length L of each water distribution branch pipe (2-1) is 200-300 mm, and the distance H from the center of the nozzle (1) of each water distribution branch pipe (2-1) to the center of the middle nozzle (1) is 180-280 mm.

4. The multi-nozzle water distribution device for a packed tower of claim 1, wherein: downward bulges (2-11) are arranged in the mounting holes and the middle mounting hole of each water distribution branch pipe (2-1), internal threads are arranged in the mounting holes, external threads are arranged on the connecting parts (1-1) of the nozzles (1), and the connecting parts (1-1) of the nozzles (1) are screwed on the mounting holes.

5. The multi-nozzle water distribution device for a packed tower of claim 1, wherein: the nozzle (1) is made of silicon carbide, the aperture ratio of the hole diameter of the spray hole (1-2) of the nozzle (1) to the hole diameter of the water distribution branch pipe (2-1) is 0.3-0.6, and the length-diameter ratio of the spray hole (1-2) of the nozzle (1) is 1.1-1.4.

6. The multi-nozzle water distribution device for a packed tower of claim 1, wherein: the main pipe (2-2) is provided with a main pipe flange (2-21) and is connected with a connecting flange (3-1) on the system water inlet pipe (3) through a fastening piece.

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