Efficient flare gas water seal device

Abstract

The utility model discloses an efficient flare gas water seal device which comprises a tank body, the bottom of the tank body is provided with a water supplementing opening and a sewage draining opening, the upper portions of the two ends of the tank body are provided with a gas inlet pipe and a gas outlet pipe which are communicated with the interior respectively, and a first rectangular grating and a second rectangular grating are horizontally arranged in an inner cavity of the tank body. The second grille is stacked above the first grille, the lower end of the air inlet pipe is in a sawtooth shape and penetrates through the first grille and the second grille, the first grille is provided with a transverse vertical round hole array a, and the second grille is provided with a transverse round hole array b with an included angle of 60 degrees; according to the anti-backfire water seal tank, the elimination rate of flare gas seal breaking liquid is effectively increased, meanwhile, the backfire stroke resistance is increased, the anti-backfire effect is better achieved, meanwhile, the length of the water seal tank can be shortened, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical flare gas treatment, in particular to a flare gas high-efficiency water seal device. Background Art

[0002] Flare systems are widely used in industries such as petroleum, natural gas, chemicals, metallurgy, and environmental protection. The flare is the final treatment point for waste gas and the last safety barrier in chemical plants. Its proper operation is crucial to preventing catastrophic accidents in the event of a fire, power outage, or water outage. As a key component of a flare system, the water seal tank is the primary means of preventing flashback and explosion accidents, and it also serves as a liquid separator.

[0003] The currently widely used horizontal water seal tank structure adds some simple shock-absorbing measures at the flare gas discharge inlet, which requires the inlet pipe outlet to have a deeper depth from the liquid surface to avoid excessive floating of the liquid level during the high-pressure gas discharge process, which causes a liquid level alarm. It also increases the gas resistance. At the same time, in order to ensure the liquid separation effect after breaking the water seal, the length is usually set longer, resulting in higher manufacturing costs for the equipment. Utility Model Content

[0004] The purpose of the utility model is to provide a flare gas high-efficiency water seal device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flare gas high-efficiency water seal device, comprising a tank body, a water supply port and a sewage outlet provided at the bottom of the tank body, an air inlet pipe and an air outlet pipe respectively provided at the upper part of both ends of the tank body and connected to the interior, a rectangular first grid and a second grid are horizontally provided in the inner cavity of the tank body, the second grid is stacked above the first grid, the lower end of the air inlet pipe is serrated and passes through the first grid and the second grid, a horizontal row of vertical circular hole array a is provided on the first grid, and a horizontal row of circular hole array b with an angle of 60° is provided on the second grid, and the lower port of the air inlet pipe is located on one of the short sides of the first grid and the second grid.

[0006] Preferably, a plurality of sets of supports are fixedly installed on the bottom of the tank body.

[0007] Preferably, the diameter of a single circular hole in the circular hole array a is 12 to 20 mm, and the diameter of a single circular hole in the circular hole array b is 6 to 12 mm.

[0008] Preferably, the length and width of the first grid and the second grid are equal and their length is greater than 2 / 3 of the length of the tank body.

[0009] Preferably, a cross-shaped spoke frame is fixedly mounted on the lower end of the inner cavity of the air outlet pipe, and a round box-shaped deflector is mounted on the lower end of the spoke frame. The deflector covers the lower end of the air outlet pipe and is separated therefrom.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: a two-layer porous plate consisting of a first grid and a second grid is set at the outlet of the flare gas inlet pipe, the first grid eliminates the impact of high-pressure flare gas on water while the flare gas passes through; the second grid filters out most of the water after the gas breaks the water seal, avoiding the flare gas from carrying liquid and causing fire rain at the flare head, and a deflector is set at the flare gas outlet, so that the flare gas can better eliminate the liquid entrained by the gas, and at the same time increase the travel resistance of the backflow gas in the event of a backfire accident. In summary, the coordinated design of the two-layer grid and the deflector effectively improves the elimination rate of the liquid after the flare gas breaks the seal, while increasing the backfire travel resistance, better playing the role of preventing backfire, and at the same time can shorten the length of the water seal tank and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the utility model;

[0012] Figure 2 is a structural schematic diagram of the first grid;

[0013] Figure 3 is a structural schematic diagram of the second grid;

[0014] Figure 4 Schematic diagram of the structure of the deflector.

[0015] In the figure: 1. Tank body; 2. Air inlet pipe; 3. Water supply port; 4. Sewage outlet; 5. Air outlet pipe; 6. First grille; 7. Second grille; 8. Deflector; 9. Spoke frame. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] See also Figure 1-4 The utility model provides a technical solution: a flare gas high-efficiency water seal device, comprising a tank body 1, a water supply port 3 and a sewage outlet 4 are provided at the bottom of the tank body 1, a plurality of sets of supports are fixedly installed at the bottom of the tank body 1, an air inlet pipe 2 and an air outlet pipe 5 are respectively provided at the upper part of both ends of the tank body 1, which are connected to the interior, a cross-shaped spoke frame 9 is fixedly installed at the lower end of the inner cavity of the air outlet pipe 5, and a round box-shaped deflector 8 is installed at the lower end of the spoke frame 9. Figure 4Figures a and b in the middle represent the main view and top view of the deflector 8 respectively. The deflector 8 covers the lower port of the outlet pipe 5 and is separated from it. The deflector 8 is used to perform the last water vapor separation before exhaust and prevent backfire.

[0018] The inner cavity of the tank body 1 is horizontally provided with a rectangular first grille 6 and a second grille 7. The second grille 7 is stacked above the first grille 6. The lower end of the air intake pipe 2 is serrated and passes through the first grille 6 and the second grille 7. A horizontal vertical circular hole array a is provided on the first grille 6, and a horizontal circular hole array b with an angle of 60° is provided on the second grille 7. The diameter of a single circular hole in the circular hole array a is 12 to 20 mm, and the diameter of a single circular hole in the circular hole array b is 6 to 12 mm. The circular holes in the two layers are staggered to increase the stroke resistance of tempering. The lower end of the air intake pipe 2 is located on one short side of the first grille 6 and the second grille 7. The length and width of the first grid 6 and the second grid 7 are equal and their length is greater than 2 / 3 of the length of the tank body 1. After the water seal is broken, the gas is evenly sealed under the action of the first grid 6. Under the action of the second grid 7, a large amount of liquid is separated (the liquid level is maintained between the first grid 6 and the second grid 7). After the air flows through the deflector 13, the droplets in the gas are completely separated, thereby improving the dryness and facilitating subsequent combustion treatment.

[0019] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flare gas high-efficiency water seal device, comprising a tank body (1), wherein the bottom of the tank body (1) is provided with a water supply port (3) and a sewage outlet (4), and the upper portions of both ends of the tank body (1) are respectively provided with an air inlet pipe (2) and an air outlet pipe (5) communicating with the interior, wherein: The inner cavity of the tank body (1) is horizontally provided with a rectangular first grille (6) and a second grille (7), the second grille (7) being stacked above the first grille (6), the lower end of the air intake pipe (2) being serrated and passing through the first grille (6) and the second grille (7), the first grille (6) being provided with a horizontal array of vertical circular holes a, the second grille (7) being provided with a horizontal array of circular holes b at an angle of 60 degrees, the lower end of the air intake pipe (2) being located on one short side of the first grille (6) and the second grille (7).

2. A flare gas high-efficiency water seal device according to claim 1, characterized in that: A plurality of sets of supports are fixedly mounted on the bottom of the tank body (1).

3. A flare gas high-efficiency water seal device according to claim 2, characterized in that: The diameter of a single circular hole in the circular hole array a is 12 to 20 mm, and the diameter of a single circular hole in the circular hole array b is 6 to 12 mm.

4. A flare gas high-efficiency water seal device according to claim 3, characterized in that: The length and width of the first grid (6) and the second grid (7) are equal, and their length is greater than 2 / 3 of the length of the tank body (1).

5. A flare gas high-efficiency water seal device according to claim 4, characterized in that: A cross-shaped spoke frame (9) is fixedly mounted on the lower end of the inner cavity of the air outlet pipe (5), and a round box-shaped deflector (8) is mounted on the lower end of the spoke frame (9). The deflector (8) covers the lower end of the air outlet pipe (5) and is separated from it.

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