External folded cyclone demister for evaporative crystallization system

Abstract

The utility model discloses an external folded cyclone demister for an evaporative crystallization system, which comprises an inlet section, a middle section and an outlet section, and the inlet section is connected with the middle section through a flaring section which is gradually expanded towards an opening of the middle section; the middle section is connected with the outlet section through a closing section which is gradually reduced towards the opening of the outlet section; an inlet baffle, an annular plate and a flow guide vane plate are sequentially arranged in the middle section in the direction from the inlet section to the outlet section, the inlet baffle and the annular plate are fixedly connected with the inner wall of the middle section through supporting plates, and the flow guide vane plate is fixedly connected with the inner wall of the middle section. The gas-liquid separator can effectively separate liquid drops with different particle sizes in gas, is suitable for different working conditions, and ensures the gas-liquid separation effect; furthermore, the problem that a conventional gas-liquid separator needs to be cleaned frequently is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-liquid separators, in particular to an external swirl flow demister for an evaporation crystallization system. Background Art

[0002] Commonly used gas-liquid separators are all of the baffled, inertial motion, or wire mesh type. Although they can achieve certain effects, they have poor adaptability, especially in the field of zero-emission evaporation and crystallization systems. The diameter of the droplets in the gas is constantly changing, and the gas-liquid separation effect of the gas-liquid separator often fails to meet the requirements. Regular cleaning is required, and the cleaning water consumption is large. The cleaning water also needs environmental protection treatment.

[0003] Therefore, how to improve the adaptability of the gas-liquid separator to ensure the gas-liquid separation effect and reduce the cleaning frequency of the gas-liquid separator has become a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the utility model provides an external swirl flow demister for an evaporation crystallization system, the purpose of which is to effectively separate droplets of different particle sizes contained in the gas, suitable for different working conditions, and ensure the effect of gas-liquid separation.

[0005] To achieve the above technical objectives, the present invention provides an external swirl flow demister for an evaporation crystallization system, comprising an inlet section, an intermediate section, and an outlet section, wherein the inlet section is connected to the intermediate section via an expanding section that gradually expands toward an opening of the intermediate section, and the intermediate section is connected to the outlet section via a closing section that gradually decreases toward an opening of the outlet section;

[0006] An inlet baffle, an annular plate, and a guide vane are sequentially provided inside the middle section from the inlet section to the outlet section. The inlet baffle and the annular plate are respectively fixedly connected to the inner wall of the middle section via a support plate. The guide vane is fixedly connected to the inner wall of the middle section.

[0007] A swirl plate is connected to one side of the annular plate close to the outlet section, an umbrella-shaped sealing plate is connected to the outside of the swirl plate, and a swirl baffle is connected to the inside of the swirl plate;

[0008] The outlet section is provided with a gas sampling port for sampling, and the bottom of the middle section is provided with a water seal pipe for drainage.

[0009] Preferably, a drain outlet is provided on one side of the bottom of the water seal pipe, a liquid level controller for controlling drainage is provided on the drain outlet, and a drain blind plate is provided at the bottom end of the water seal pipe.

[0010] Preferably, a spoiler is provided on a side of the inlet baffle close to the inlet section.

[0011] Preferably, an inspection port is provided on the middle section, and a support is also provided at the bottom of the middle section.

[0012] Preferably, flanges are respectively provided at the outer ends of the inlet section and the outlet section.

[0013] Beneficial effects of the utility model:

[0014] Due to the above structural design, the utility model can effectively separate droplets of different particle sizes in the gas, is suitable for different working conditions, and ensures the effect of gas-liquid separation; further, it avoids the problem of frequent cleaning of conventional gas-liquid separators. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the cross-section structure at AA in the middle;

[0017] Figure 3 for Figure 1 Schematic diagram of the cross-section structure at the middle BB;

[0018] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure at CC.

[0019] In the figure: 1 inlet section, 2 middle section, 3 outlet section, 4 expansion section, 5 closing section, 6 inlet baffle, 7 annular plate, 8 guide vane, 9 support plate, 10 swirl plate, 11 umbrella sealing plate, 12 swirl baffle, 13 gas sampling port, 14 water seal pipe, 15 drain port, 16 liquid level controller, 17 drain blind plate, 18 spoiler, 19 inspection port, 20 flange, 21 support. DETAILED DESCRIPTION

[0020] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention.

[0021] Example:

[0022] like Figures 1-4 As shown, the evaporation crystallization system uses an external swirl flow demister, which includes an inlet section 1, an intermediate section 2 and an outlet section 3. The inlet section 1 is connected to the intermediate section 2 through an expanding section 4 whose opening gradually expands toward the intermediate section 2, and the intermediate section 2 is connected to the outlet section 3 through a closing section 5 whose opening gradually decreases toward the outlet section 3.

[0023] The interior of the middle section 2 is provided with an inlet baffle 6, an annular plate 7 and a guide vane 8 in sequence from the inlet section 1 to the outlet section 3. The inlet baffle 6 and the annular plate 7 are fixedly connected to the inner wall of the middle section 2 through a support plate 9, and the guide vane 8 is fixedly connected to the inner wall of the middle section 2.

[0024] A swirl plate 10 is connected to one side of the annular plate 7 close to the outlet section 3 , an umbrella-shaped sealing plate 11 is connected to the outer side of the swirl plate 10 , and a swirl baffle 12 is connected to the inner side of the swirl plate 10 .

[0025] A gas sampling port 13 for sampling is provided on the outlet section 3 , and a water seal pipe 14 for drainage is provided at the bottom of the middle section 2 .

[0026] The main innovation of the utility model is that it can effectively separate droplets of different particle sizes contained in the gas, is suitable for different working conditions, achieves the purpose of gas-liquid separation, and ensures the effect of gas-liquid separation.

[0027] In this embodiment, the function of the demister can be tested by sampling and analyzing the gas through the gas sampling port 13, and whether the outlet gas meets the requirements of subsequent processes (such as recovery, discharge, etc.) can also be tested.

[0028] A drain port 15 is provided on one side of the bottom of the water seal pipe 14, and a liquid level controller 16 for controlling drainage is provided on the drain port 15. A drain blind plate 17 is provided at the bottom end of the water seal pipe 14. The purpose of draining and controlling the liquid level is achieved through the liquid level controller 16 at the lower part of the middle section 2 of the demister, thereby ensuring the sealing inside the demister.

[0029] A spoiler 18 is provided on the side of the inlet baffle 6 close to the inlet section 1. When some liquid droplets in the gas impact the inlet baffle 6 due to their inertial movement, the liquid droplets can be more effectively blocked, thereby improving the gas-liquid separation effect.

[0030] In some embodiments, an inspection port 19 is provided on the middle section 2 to facilitate inspection and maintenance of the demister, and a support 21 is provided at the bottom of the middle section 2 to facilitate placement of the entire demister.

[0031] In other embodiments, flanges 20 are provided at the outer ends of the inlet section 1 and the outlet section 3, respectively, to facilitate connection of the demister to equipment in an evaporation crystallization system or other gas-liquid separation system.

[0032] The working principle of this utility model:

[0033] 1. First, the gas enters from the inlet section 1. There is a flared section 4 connected between the inlet section 1 and the middle section 2. Since the opening of the flared section 4 gradually expands from the inlet section 1 to the middle section 2, the flow rate of the gas entering from the inlet section 1 can be reduced, so that some liquid droplets in the gas drip to the bottom of the demister due to gravity and are separated from the gas.

[0034] 2. Another part of the droplets in the gas moves forward due to its inertial motion and impacts the inlet baffle 6. After the collision, they lose kinetic energy and flow along the inlet baffle 6 and the spoiler 18 to the bottom of the demister and are separated from the gas.

[0035] 3. After the gas passes through the periphery of the inlet baffle 6, it is guided by the swirl plate 10 and performs swirl motion inside. The liquid droplets in the gas are continuously thrown to the inner wall of the demister under the action of centrifugal force and separated from the gas.

[0036] 4. Finally, the gas leaves the demister after passing through the guide vane 8, which prevents the rotating flow of the gas from increasing friction and noise.

[0037] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. The external swirl flow demister for evaporation crystallization system includes an inlet section, an intermediate section and an outlet section, and is characterized by: The inlet section is connected to the middle section via an expanding section that gradually expands toward the opening of the middle section, and the middle section is connected to the outlet section via a closing section that gradually decreases toward the opening of the outlet section; An inlet baffle, an annular plate, and a guide vane are sequentially provided inside the middle section from the inlet section to the outlet section. The inlet baffle and the annular plate are respectively fixedly connected to the inner wall of the middle section via a support plate. The guide vane is fixedly connected to the inner wall of the middle section. A swirl plate is connected to one side of the annular plate close to the outlet section, an umbrella-shaped sealing plate is connected to the outside of the swirl plate, and a swirl baffle is connected to the inside of the swirl plate; The outlet section is provided with a gas sampling port for sampling, and the bottom of the middle section is provided with a water seal pipe for drainage.

2. The external swirl flow demister for the evaporation crystallization system according to claim 1, characterized in that: A drain outlet is provided on one side of the bottom of the water seal pipe, a liquid level controller for controlling drainage is provided on the drain outlet, and a drain blind plate is provided at the bottom end of the water seal pipe.

3. The external swirl flow demister for the evaporation crystallization system according to claim 2, characterized in that: A spoiler is provided on one side of the inlet baffle close to the inlet section.

4. The external swirl flow demister for the evaporation crystallization system according to claim 1 or 3, characterized in that: An inspection port is provided on the middle section, and a support is also provided at the bottom of the middle section.

5. The external swirl flow demister for the evaporation crystallization system according to claim 4, characterized in that: The outer ends of the inlet section and the outlet section are respectively provided with flanges.

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