A high-efficiency, low-resistance gas-liquid distributor

Abstract

This utility model relates to a high-efficiency, low-resistance gas-liquid distributor. The device comprises a demister, a liquid collector, and a liquid distributor connected in sequence. Liquid initially converges through the upper demister and enters the liquid collection tray of the liquid collector. Then, it is guided into the lower liquid distributor through a guide pipe located at the bottom of the liquid collection tray. In this design, the gas and liquid phases flow separately within the distributor, achieving gas-liquid phase isolation. This reduces the entrainment of liquid droplets in the rising gas, lowers the operating load on the upper demister, and enables the removal rate of droplets ≥5µm from the gas after passing through this device to reach over 90%, with a total gas resistance ≤200 Pa and a gas throughput of up to 8000 m³. 3 / (hm 2 The above-mentioned devices are characterized by small footprint, low resistance, high efficiency, good anti-clogging properties, and gas-liquid isolation, making them particularly suitable for use in concentration towers for treating high-salinity wastewater.

Description

Technical Field

[0001] This utility model belongs to the field of chemical industry, and in particular relates to a high-efficiency, low-resistance gas-liquid distributor. Background Technology

[0002] A gas-liquid distributor is a device used to uniformly distribute gas and liquid two-phase fluids within an apparatus. It is typically installed at the inlet or packing compartment of a reactor, tower, or similar equipment. Its main function is to disperse gas and liquid uniformly within the equipment to improve the efficiency of mass transfer, heat transfer, or chemical reactions.

[0003] CN201720168868.1 discloses a gas-liquid distributor with uniform liquid distribution and anti-clogging properties. Specifically, the gas-liquid distributor includes a support ring with multiple through grooves inside. Each through groove has an air-lifting groove installed on its inner edge. Each air-lifting groove has a connector installed at both ends. The upper end of the connector is fixedly installed on both ends of an arc-shaped plate. The arc-shaped plate gradually bends downward from both ends towards the center. The low point of the arc-shaped plate is located at the corresponding position above each air-lifting groove. A "V-shaped" upper plate is installed between the two ends of the upper surface of the arc-shaped plate. The upper plate is inclined upward from both ends towards the center. The high point of the upper plate, the low point of the arc-shaped plate, and the center of the corresponding air-lifting groove are located in the same vertical plane. The outer edges of the upper plate extend vertically downward to both sides to form extension plates. The lower ends of the extension plates on both sides are made into sharp teeth.

[0004] CN202210823343.2 discloses a gas distributor, a gas distributor module, a reactor, and a chemical system. Specifically, the gas distributor includes a bubble cap with a gas chamber, an inlet pipe, and a check valve. The bubble cap includes a cap base, a cap body, and a cap cover. Multiple air holes are provided on the cap body for uniformly distributing gas into the reactor. The inlet pipe communicates with the gas chamber to introduce gas into the bubble cap. The check valve is installed on the inlet pipe to prevent gas backflow. This gas distributor has a simple structure, uniform gas distribution, and good backflow prevention performance.

[0005] The gas-liquid distributors mentioned above have achieved good gas-liquid distribution effects, but they generally suffer from high resistance, easy clogging, and inability to solve the problem of gas-liquid entrainment. They also require high-performance demisters that are set up separately. Furthermore, since both demisters and gas-liquid distributors are set up separately, they require a large amount of space inside the tower, which reduces the utilization efficiency of the equipment. Summary of the Invention

[0006] To address the common problems in existing technologies, such as high resistance, easy clogging, inability to resolve gas-liquid entrainment, and large space occupation, this utility model provides a high-efficiency, low-resistance gas-liquid distributor. It features small space occupation, low resistance, high efficiency, good anti-clogging properties, and gas-liquid isolation, making it particularly suitable for use in low-temperature concentration towers for treating high-salinity wastewater.

[0007] The present invention adopts the following technical solution:

[0008] This invention employs a novel gas-liquid distributor composed of a demister, a liquid collector, and a liquid distributor connected in sequence. Several tubular liquid collectors are vertically placed in the middle layer, and the liquid distributor is placed in the lower layer. It also includes baffles at the upper and lower ends of the demister. The gas and liquid phases flow separately within the distributor, achieving gas-liquid phase isolation. This reduces the entrainment of liquid droplets in the rising gas, lowers the operating load on the upper demister, and achieves a droplet removal rate of over 90% for gases containing liquid droplets (≥5µm) after passing through the distributor. The total gas resistance is ≤200 Pa, and the gas throughput reaches 8000 m³ / s. 3 / (hm 2 The liquid flows from top to bottom through the top demister, the middle liquid collector, and finally the bottom liquid distributor, achieving uniform distribution of the liquid within the tower.

[0009] As described above, the demister uses an inclined plate with upper and lower bends to remove mist droplets from the gas and simultaneously perform preliminary liquid confluence. The lower end is equipped with a downward bend in the opposite direction to the upper bend, forming a "Z"-shaped inclined plate.

[0010] As mentioned above, the upper bending angle A of the demister is 30~60° and the lower bending angle B is 30~60°.

[0011] The length c, spacing a, and vertical height b of the inclined plate as described above satisfy a 2 +b 2 =c 2 The mathematical relationship.

[0012] The liquid collection device described above is equipped with a liquid collection tray and a guide tube.

[0013] As described above, the guide tubes are evenly arranged at the bottom of the liquid collection tray. The hollow guide tubes in the middle are connected to the upper and lower spaces, and the upper part of the guide tubes is flush with the bottom plate of the liquid collection tray.

[0014] As described above, several strip-shaped through holes are evenly arranged at the bottom of the guide tube wall. The height of the holes is less than the height of the liquid storage tray on the liquid distribution component, thereby realizing the liquid seal function.

[0015] The liquid distribution unit described above is equipped with a liquid storage tray and a distributor.

[0016] As described above, the liquid storage tray is equipped with two or four small holes for draining the liquid from the tray when the equipment is not in use.

[0017] The distributor described above is a slotted distributor.

[0018] As described above, the trough distributor achieves uniform liquid distribution by using a serrated notch at the top of the trough wall, holes in the trough wall, or a combination of both.

[0019] As described above, when the trough distributor has holes in the trough wall, the height of the holes is greater than the height of the strip holes in the guide tube of the liquid collection component 2.

[0020] As mentioned above, a small hole refers to one with a diameter of less than 20 mm, allowing liquid to flow smoothly downwards.

[0021] Compared with existing technologies, the beneficial effects of this utility model are:

[0022] Existing patented gas-liquid distributors generally suffer from high resistance, easy clogging, and inability to resolve gas-liquid entrainment issues. They also require highly sophisticated demisters, and the separate installation of demisters and gas-liquid distributors occupies significant space within the tower, reducing equipment utilization efficiency. This invention provides a high-efficiency, low-resistance gas-liquid distributor. Its innovative design combines demister and gas-liquid distribution functions into a single tower internal component. This design features small footprint, low resistance, high efficiency, good anti-clogging properties, and gas-liquid isolation, making it particularly suitable for use in concentration towers treating high-salinity wastewater. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a high-efficiency, low-resistance gas-liquid distributor.

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of a high-efficiency, low-resistance gas-liquid distributor.

[0025] Figure 3 This is a schematic diagram of a demister component;

[0026] Figure 4 Schematic diagram of liquid collection device;

[0027] Figure 5 This is a schematic diagram of a liquid distribution component;

[0028] Figure 6 This is a schematic diagram of the dimensions of the baffle plate;

[0029] Reference numerals: 1 Demisting component; 2 Liquid collecting component; 3 Liquid distributing component; 1-1 Flow deflector; 1-2 Lower bend; 1-3 Upper bend; 1-4 Upper pressure plate; 1-5 Lower support plate; 1-6 Baffle; 2-1 Liquid collecting tray; 2-2 Guide pipe; 2-3 Slotted orifice; 3-1 Liquid storage tray; 3-2 Distributor; a Flow deflector spacing; b Flow deflector height; c Flow deflector length; A Upper bend angle; B Lower bend angle. Detailed Implementation

[0030] To better understand the above-mentioned technical solutions, technical objectives, technical features, and advantages of the device of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, this application is not limited to the embodiments and combinations of features within those embodiments to form other technical solutions.

[0031] Many specific details are set forth in the following description to provide a full understanding of the present invention; however, the present invention is not limited to the technical solutions and embodiments described below. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0032] The following is in conjunction with the instruction manual appendix. Figure 1-6 The present invention will be further described in detail below with reference to specific embodiments.

[0033] Example: Operating condition: Gas flow rate 10000 m³ / s 3 / h (containing 100 mg / m³ of liquid) 3 The droplet size distribution is 0-5 μm 10%, 5-50 μm 35%, 50-100 μm 50%, and others >100 μm), with a liquid flow rate of 120 m³ / h. 3 / h.

[0034] Refer to the instruction manual appendix Figure 1-6 A high-efficiency, low-resistance gas-liquid distributor for the aforementioned operating conditions comprises a demister 1, a liquid collector 2, and a liquid distributor 3 connected in sequence, with a gas throughput of 10,000 m³ / s. 3 / h of gas containing droplets rising from bottom to top, 120 m 3 After the liquid flows from top to bottom through the above-mentioned distributor, the removal rate of ≥5μm droplets in the gas reaches 90%, and the total resistance is ~150 Pa; the spacing a, height b, and length c of the inclined plate arrangement of the demister 1 meet the following conditions: 2 +b 2 =c 2 The mathematical relationship is as follows: the upper bending angle A is 30°~60°, the lower bending angle B is 30°~60°, and the number of inclined flow plates is 18, which are evenly fixed on the liquid collection plate 2-1 of the liquid collection component 2. The liquid collection component 2 consists of a liquid collection plate 2-1 and guide pipes 2-2. Four guide pipes 2-2 are evenly distributed on the bottom plate of the liquid collection plate 2-1, and four strip holes 2-3 are evenly distributed at the bottom of each guide pipe. The liquid distribution component 3 consists of a liquid storage plate 3-1 and a distributor 3-2. The distributor 3-2 consists of eight distribution grooves and is connected to the inner circle of the liquid storage plate 3-1. A sawtooth notch is evenly provided at the top of each distribution groove, and the notch size is an equilateral triangle.

[0035] The above description is merely a basic principle and example of this utility model and does not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A high-efficiency, low-resistance gas-liquid distributor, characterized in that... It includes a number of "Z"-shaped demisters (1) connected in sequence and placed on the upper layer, a number of tubular liquid collection components (2) placed vertically in the middle layer, a liquid distribution component (3) placed on the lower layer, and baffles (2-4) set at the upper and lower ends of the demisters (1).

2. The high-efficiency, low-resistance gas-liquid distributor according to claim 1, characterized in that... The defogging component includes (1) an upper bend at the top and a lower bend (1-2) at the bottom that is opposite to the upper bend (1-3) forming a "Z"-shaped oblique flow plate (1-1).

3. A high-efficiency, low-resistance gas-liquid distributor according to any one of claims 1 and 2, characterized in that... The upper bending angle A on the defogging component (1) is 30~60° and the lower bending angle B is 30~60°.

4. A high-efficiency, low-resistance gas-liquid distributor according to any one of claims 1 and 2, characterized in that... The spacing a, vertical height b, and length c of the baffle plate (1-1) satisfy a) 2 +b 2 =c 2 The mathematical relationship.

5. A high-efficiency, low-resistance gas-liquid distributor according to claim 1, characterized in that... The liquid collection device (2) includes a liquid collection tray (2-1) connected to a guide pipe (2-2); the guide pipe (2-2) is evenly arranged below the liquid collection tray (2-1), and the hollow guide pipe (2-2) is connected to the upper space and the lower space; the upper height of the guide pipe (2-2) is flush with the bottom of the liquid collection tray (2-1).

6. A high-efficiency, low-resistance gas-liquid distributor according to any one of claims 1 and 5, characterized in that... Several strip-shaped holes (2-3) are uniformly arranged at the bottom of the wall of the guide tube (2-2). The height of the strip-shaped holes (2-3) is less than the height of the liquid storage plate (3-1) on the liquid distribution component (3).

7. The high-efficiency, low-resistance gas-liquid distributor according to claim 1, characterized in that... The liquid distribution component (3) includes a liquid storage tray (3-1) and a distributor (3-2); the distributor (3-2) is placed inside the liquid storage tray (3-1), and the bottom surface of the liquid storage tray (3-1) is provided with two or four small holes (3-3); the distributor (3-2) is a trough-type distributor.

8. A high-efficiency, low-resistance gas-liquid distributor according to any one of claims 1 and 7, characterized in that... The trough distributor includes any one or a combination of the following types: a serrated notch at the top of the trough wall and an opening in the trough wall.

9. A high-efficiency, low-resistance gas-liquid distributor according to any one of claims 1 and 7, characterized in that... The trough distributor is designed so that when the trough wall is perforated, the height of the perforation is higher than the height of the strip hole (2-3) of the guide pipe (2-2) in the liquid collection component (2).

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