Acid gas capturing and eliminating device

Abstract

The invention provides an acid gas trapping and eliminating device, and relates to the technical field of acid gas leakage treatment. The acid gas trapping and eliminating device comprises a trapping and eliminating agent storage tank and a foam tank which are arranged above a movable bottom plate, a guide pipe is fixedly communicated between the trapping and eliminating agent storage tank and the foam tank, and a first discharging pipe is fixedly communicated with one side of the outer surface of the trapping and eliminating agent storage tank. By designing a foam tank, a guide pipe, a trapping agent storage tank, a dry powder spraying pipeline and an inert gas atomization / foam generator to be integrated and arranged side by side, mist or foam formed by a large amount of inert gas is sprayed to a leakage area while or before dry powder is sprayed, the oxygen concentration in air is diluted, and the risk of hydrogen sulfide combustion is restrained; the atomization / foam layer is arranged on the surface of the dry powder and creates a better dispersion environment for the dry powder, the dry powder can be better carried and dispersed by the atomization / foam so that the dry powder can be in full contact with hydrogen sulfide, and meanwhile, the foam layer can cover the ground to reduce flying of products after reaction of the dry powder.

Description

Technical Field

[0001] The invention relates to the technical field of acid gas leakage treatment, in particular to an acid gas capture and elimination device. Background Art

[0002] Acidic gases, including sulfur oxides, nitrogen oxides, and other compounds, react to form acids when dissolved in water. The presence of these gases can increase corrosion of pipes and equipment, shortening their service life. Furthermore, acidic gases (such as sulfur dioxide, nitrogen oxides, and hydrogen chloride) are also highly harmful to the human body, primarily by directly irritating mucous membranes and respiratory tracts, causing chronic diseases, and disrupting the immune system.

[0003] Once an acid gas leak occurs, it will seriously endanger the production safety of the equipment and the lives of personnel, and will seriously pollute the nearby air and damage the ecological environment. Existing technologies mainly use two methods to deal with acid gas leak accidents: wet decontamination and dry capture. Wet decontamination generally uses a fixed spray system. This means that a liquid spray device and a negative pressure hose device are fixed above and around the production equipment. However, this method has certain limitations, mainly manifested in the following manifestations: ① If a leak is accompanied by a fire or explosion, the spray device may be damaged, making wet decontamination impossible. ② If there is strong wind at the accident site, a complete water curtain cannot be formed, and the acid gas will spread rapidly.

[0004] The working principle, appearance, and usage of a dry powder fire extinguisher are similar to those of a dry powder fire extinguisher. It contains powder (primarily modified calcium hydroxide) and a driving gas (nitrogen). During use, the powder inside the extinguisher, driven by nitrogen, is ejected at high speed from a nozzle, where it reacts with chlorine in the air to produce calcium chloride, calcium hypochlorite, and water, effectively capturing and eliminating chlorine. It uses a small amount of powder, has a short spray time (70 to 250 seconds), and a short spray distance (5 to 10 meters).

[0005] To this end, we have developed a new acid gas capture and elimination device. Summary of the Invention

[0006] (1) Technical problems solved In response to the shortcomings of the existing technology, the present invention provides an acid gas capture and elimination device, which solves the problems that the existing technology mainly uses two methods for dealing with acid gas leakage accidents, namely wet scrubbing and dry scrubbing. If a fire or explosion occurs at the same time as the leakage, the spraying device may be damaged, making wet scrubbing impossible. When there is strong wind at the accident site, a complete water curtain cannot be formed, and the acid gas will spread rapidly. Dry scrubbing uses a small amount of powder, has a short spraying time (70 to 250 seconds), and a short spraying distance (5 to 10 meters). Both methods have their own shortcomings.

[0007] (2) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: an acid gas capture and elimination device, comprising a capture and elimination agent storage tank and a foam tank arranged above a movable bottom plate, wherein the capture and elimination agent storage tank and the foam tank are fixedly connected to each other by a conduit, and one side of the outer surface of the capture and elimination agent storage tank is fixedly connected to a first discharge pipe, one end of the first discharge pipe is fixedly installed with a discharge valve, and a fixed seat is fixedly connected to the bottom of one side of the outer surface of the capture and elimination agent storage tank and at a position directly below the first discharge pipe, and a diffusion mechanism for diffusing the capture and elimination agent is installed below the fixed seat.

[0008] The diffusion mechanism includes a U-shaped mounting bracket slidably connected to the lower surface of the fixed base, the inner side of the U-shaped mounting bracket is rotatably connected to a fan, and locking pins are passed through both sides of the outer surface of the U-shaped mounting bracket, one end of the two locking pins is threadedly connected to the side wall of the fan, and both ends of the U-shaped mounting bracket are provided with connection holes that cooperate with the locking pins.

[0009] The top side wall of the U-shaped mounting frame is symmetrically provided with mounting holes, and the fixing seat and the side wall of the mounting hole are penetrated by a second bolt, one end of the second bolt is threadedly connected to the side wall of the fixing seat.

[0010] One end of the fan is fixedly connected to a mounting ring, and one side of an outer surface of the mounting ring is rotatably connected to a rear cover.

[0011] The top of the capture and elimination agent storage tank is fixedly connected with a feed pipe, the top of the feed pipe is abutted with a cover, and the side walls of the feed pipe and the cover are threadedly connected with a plurality of first bolts.

[0012] Preferably, one side of the outer surface of the scavenger storage tank is fixedly connected to a connecting pipe, an electric control valve is fixedly installed in the middle of the connecting pipe, and one end of the connecting pipe is fixedly connected to a main pipe, and the bottom of the main pipe is fixedly connected to multiple air pipes.

[0013] Preferably, a plurality of high-pressure driving gas cylinders are fixedly mounted on one end of the upper surface of the movable base plate, a gas outlet nozzle is fixedly mounted on the top of each of the plurality of high-pressure driving gas cylinders, and one end of each of the plurality of gas outlet nozzles is fixedly connected to one end of the corresponding gas pipe.

[0014] Preferably, one side of the outer surface of the foam tank is fixedly connected to a second discharge pipe, and the bottom of the foam tank is fixedly connected to a plurality of diagonal braces, the bottom of the scavenger storage tank is fixedly connected to a plurality of supporting legs, and the bottoms of the plurality of diagonal braces and supporting legs are fixedly connected to the upper surface of the movable bottom plate.

[0015] Preferably, a protective frame is fixedly connected to the outer side of the upper surface of the movable base plate, and universal wheels are fixedly installed on all four sides of the lower surface of the movable base plate.

[0016] (3) Beneficial effects The present invention provides an acid gas capture and elimination device, which has the following beneficial effects: 1. This acid gas capture and elimination device integrates and juxtaposes a foam tank, conduit, and capture and elimination agent storage tank with a dry powder injection pipeline and an inert gas atomizer / foam generator. Simultaneously with or before the dry powder is injected, a large amount of inert gas forms a fine mist or foam into the leakage area, diluting the oxygen concentration in the air, suppressing the combustion risk of hydrogen sulfide (the main component of acid gas), and creating a better dispersion environment for the dry powder. The atomizer / foam can better carry and disperse the dry powder, allowing it to come into more complete contact with hydrogen sulfide. At the same time, the foam layer can also form a cover on the ground, reducing the flying of dry powder reaction products.

[0017] 2. The acid gas capture and elimination device, through the design of a fixed base and diffusion mechanism, can force the fan to blow dry powder toward the center of the leakage source or the area that needs key protection, and promote the mixing of dry powder and hydrogen sulfide gas (the main component of acid gas). The forced airflow ensures that the dry powder can be diffused to the target area more quickly and evenly, thereby improving the capture and elimination efficiency. The fan can also be adjusted in angle to blow the dry powder and treated gas in a specific direction, protecting the downwind area and increasing the original spray distance and spray area. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the present invention; Figure 2 This is a schematic diagram of the connection between the capture and elimination agent storage tank and the high-pressure driving gas cylinder of the present invention; Figure 3 This is a schematic diagram of the connection between the capture and destruction agent storage tank and the diffusion mechanism of the present invention; Figure 4 It is a structural schematic diagram of the diffusion mechanism of the present invention; Figure 5 Schematic diagram of the structure of the U-shaped mounting bracket 23 of the present invention.

[0019] Among them, 1. Mobile base plate; 2. Universal wheel; 3. High-pressure driving gas cylinder; 4. Air outlet nozzle; 5. Air pipe; 6. Main pipe; 7. Connecting pipe; 8. Electric control valve; 9. Pesticide storage tank; 10. Support leg; 11. Conduit; 12. Feed pipe; 13. Sealing cover; 14. First bolt; 15. First discharge pipe; 16. Discharge valve; 17. Foam tank; 18. Diagonal brace; 19. Second discharge pipe; 20. Protective frame; 21. Fixed seat; 22. Second bolt; 23. U-shaped mounting bracket; 24. Mounting hole; 25. Fan; 26. Locking pin; 27. Mounting ring; 28. Back cover; 29. ​​Connecting hole. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Examples, such as Figure 1-Figure 5 As shown, an embodiment of the present invention provides an acid gas capture and elimination device, comprising a capture and elimination agent storage tank 9 and a foam tank 17 arranged above a movable bottom plate 1, wherein a conduit 11 is fixedly connected between the capture and elimination agent storage tank 9 and the foam tank 17, wherein another electric control valve 8 should be provided in the middle of the conduit 11 to facilitate control of the foam tank 17 entering the interior of the capture and elimination agent storage tank 9, and a first discharge pipe 15 is fixedly connected to one side of the outer surface of the capture and elimination agent storage tank 9, a discharge valve 16 is fixedly installed at one end of the first discharge pipe 15, and a fixing seat 21 is fixedly connected to the bottom of one side of the outer surface of the capture and elimination agent storage tank 9 and a position directly below the first discharge pipe 15, and a diffusion mechanism for diffusing the capture and elimination agent is installed below the fixing seat 21; Specifically, the diffusion mechanism includes a U-shaped mounting frame 23 that is slidably connected to the lower surface of the fixed base 21, and the fan 25 is rotatably connected to the inner side of the U-shaped mounting frame 23, and locking pins 26 are passed through both sides of the outer surface of the U-shaped mounting frame 23. One end of the two locking pins 26 is threaded and connected to the side wall of the fan 25, and both ends of the U-shaped mounting frame 23 are provided with connection holes 29 that cooperate with the locking pins 26.

[0022] Among them, a (powerful) fan 25 is provided below the first discharge pipe 15 of the scavenger storage tank 9. When the dry powder (i.e., scavenger) is sprayed, the fan 25 is started synchronously to force the dry powder to be blown toward the center of the leakage source or the area that needs to be protected, and promote the mixing of the dry powder and hydrogen sulfide gas (the main component of acid gas). The forced airflow ensures that the dry powder can be diffused to the target area more quickly and evenly, thereby improving the scavenging efficiency. In addition, the fan 25 can be adjusted in angle to blow the dry powder and the treated gas in a specific direction to protect the downwind area.

[0023] The top side wall of the U-shaped mounting bracket 23 is symmetrically provided with mounting holes 24, and the side walls of the fixing seat 21 and the mounting hole 24 are jointly penetrated by a second bolt 22, one end of the second bolt 22 is threadedly connected to the side wall of the fixing seat 21, and the second bolt 22 tightly connects the U-shaped mounting bracket 23 and the fixing seat 21 together. By moving the U-shaped mounting bracket 23 and changing the position of the second bolt 22 passing through the mounting hole 24, the U-shaped mounting bracket 23 can be set in different areas relative to the fixing seat 21. The U-shaped mounting bracket 23 can be set directly below the first discharge pipe 15 or in a position to the front or rear side of the bottom, so as to achieve fine-tuning of the front and rear positions of the fan 25 in a horizontal state, thereby increasing the adjustable range of the fan 25.

[0024] Among them, one end of the fan 25 is fixedly connected to a mounting ring 27, and one side of the outer surface of the mounting ring 27 is rotatably connected to a back cover 28. The back cover 28 can rotate around the top of the mounting ring 27 to open, so that the fan 25 can enter the air easily.

[0025] The top of the scavenger storage tank 9 is fixedly connected to a feed pipe 12, the top of the feed pipe 12 is abutted with a cover 13, and the side walls of the feed pipe 12 and the cover 13 are threadedly connected with a plurality of first bolts 14. The scavenger (i.e., dry powder) can be added to the interior of the scavenger storage tank 9 through the feed pipe 12 to ensure that there is always sufficient scavenger stored in the scavenger storage tank 9 for treating acidic gases, and the function of the cover 13 is to ensure the airtight state of the entire scavenger storage tank 9 when the feed pipe 12 is idle.

[0026] One side of the outer surface of the scavenger storage tank 9 is fixedly connected to a connecting pipe 7, the middle of the connecting pipe 7 is fixedly installed with an electric control valve 8, and one end of the connecting pipe 7 is fixedly connected to a main pipe 6, the bottom of the main pipe 6 is fixedly connected to multiple air pipes 5, and accordingly, one end of the upper surface of the movable base plate 1 is fixedly installed with multiple high-pressure driving gas cylinders 3, the tops of the multiple high-pressure driving gas cylinders 3 are fixedly installed with air outlet nozzles 4, and one end of the multiple air outlet nozzles 4 is fixedly connected to one end of the corresponding air pipe 5. The scavenger storage tank 9 is usually in a normal pressure state, so that the storage capacity of the scavenger dry powder inside can be greatly increased, and the interior of the high-pressure driving gas cylinder 3 is filled with high-pressure nitrogen, and the inert gas - nitrogen (1.5MPa) is used as the driving force to spray the scavenger into the acid gas leakage point or diffusion area, and maintain a constant pressure during the dry powder spraying.

[0027] Similarly, the foam tank 17 is also a high-pressure tank, ensuring that the foam inside can be moved into the scavenger tank 9 under the action of gas pressure. Simultaneously with or before the dry powder injection, a large amount of inert gas mist or foam is sprayed into the leak area. The dry powder injection pipeline can be integrated with or juxtaposed with the inert gas atomizer / foam generator.

[0028] Specifically, after a leak is detected, the inert gas atomization / foaming system is activated to cover the leak point and surrounding area, diluting the oxygen concentration in the air, suppressing the risk of hydrogen sulfide combustion, and creating a better dispersion environment for the dry powder. Dry powder is then sprayed subsequently or simultaneously. The atomization / foaming system effectively carries and disperses the dry powder, allowing it to come into contact with the hydrogen sulfide. It also reduces the oxygen concentration, minimizing the risk of an explosive gas cloud formed by the mixture of hydrogen sulfide and air. The foam layer also forms a blanket on the ground, reducing the amount of dry powder reaction products that can be released.

[0029] One side of the outer surface of the foam tank 17 is fixedly connected to a second discharge pipe 19 (the end of the second discharge pipe 19 should also be provided with an electric control valve, so that the foam tank 17 can not only transport foam to the inside of the scavenger storage tank 9, but also be connected to the external pipeline through the second discharge pipe 19 to directly output foam to the external environment), and the bottom of the foam tank 17 is fixedly connected to a plurality of diagonal braces 18, the bottom of the scavenger storage tank 9 is fixedly connected to a plurality of supporting legs 10, and the bottoms of the plurality of diagonal braces 18 and the support legs 10 are all fixedly connected to the upper surface of the movable base plate 1, the scavenger storage tank 9 and the foam tank 17 are respectively fixedly connected to the surface of the movable base plate 1 through the supporting legs 10 and the diagonal braces 18, so that the entire device is integrated on the movable base plate 1, which is convenient for overall movement.

[0030] A protective frame 20 is fixedly connected to the outer side of the upper surface of the movable base plate 1, and universal wheels 2 are fixedly installed on all four sides of the lower surface of the movable base plate 1. The universal wheels 2 can be used to move the entire device to meet actual usage needs and place it in a suitable location where acid gas capture and elimination is required; Working principle: When acid gas leakage occurs, an injection signal or command is issued to open the electric control valve 8 at the connecting pipe 7. The nitrogen in each high-pressure driving gas cylinder 3 enters the connecting pipe 7 through the gas pipe 5 and is then pressed into the scavenger storage tank 9. The powdered dry powder scavenger in the scavenger storage tank 9 is blown up and sprayed outwards to the protection area through the first discharge pipe 15 to capture and eliminate the acidic hydrogen sulfide gas in the protection area. During this process, the dry powder injection pipeline is integrated and juxtaposed with the inert gas atomizer / foam generator. Simultaneously with or before the dry powder injection, a large amount of inert gas forms a fine mist or foam into the leak area, diluting the oxygen concentration in the air, suppressing the combustion risk of hydrogen sulfide (the main component of acid gas), and creating a better dispersion environment for the dry powder. The atomizer / foam can better carry and disperse the dry powder, allowing it to come into contact with hydrogen sulfide more fully. At the same time, the foam layer can also form a cover on the ground, reducing the flying of dry powder reaction products. At the same time, a fan 25 is provided below the first discharge pipe 15. The fan 25 can force the dry powder to be blown toward the center of the leakage source or the area that needs to be protected, and promote the mixing of the dry powder and hydrogen sulfide gas (the main component of acid gas). The forced airflow ensures that the dry powder can be diffused to the target area more quickly and evenly, thereby improving the capture and destruction efficiency. The fan can adjust the angle and blow the dry powder and the treated gas in a specific direction to protect the downwind area, thereby increasing the original spraying distance and spraying area.

[0031] While embodiments of the present invention have been shown and described, it will be appreciated 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 invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An acid gas capture and elimination device, comprising a capture and elimination agent storage tank (9) and a foam tank (17) arranged above a movable bottom plate (1), characterized in that: A conduit (11) is fixedly connected between the scavenger storage tank (9) and the foam tank (17), a first discharge pipe (15) is fixedly connected to one side of the outer surface of the scavenger storage tank (9), a discharge valve (16) is fixedly installed at one end of the first discharge pipe (15), and a fixing seat (21) is fixedly connected to the bottom of one side of the outer surface of the scavenger storage tank (9) and located directly below the first discharge pipe (15), and a diffusion mechanism for diffusing the scavenger is installed below the fixing seat (21).

2. The acid gas capture and elimination device according to claim 1, characterized in that: The diffusion mechanism includes a U-shaped mounting frame (23) slidably connected to the lower surface of the fixing seat (21), the inner side of the U-shaped mounting frame (23) is rotatably connected to the fan (25), and locking pins (26) are passed through both sides of the outer surface of the U-shaped mounting frame (23), one end of each of the two locking pins (26) is threadedly connected to the side wall of the fan (25), and both ends of the U-shaped mounting frame (23) are provided with connection holes (29) that match the locking pins (26).

3. The acid gas capture and elimination device according to claim 2, characterized in that: The top side wall of the U-shaped mounting frame (23) is symmetrically provided with mounting holes (24), and the side wall of the fixing seat (21) and the mounting hole (24) is penetrated by a second bolt (22), one end of the second bolt (22) is threadedly connected to the side wall of the fixing seat (21).

4. The acid gas capture and elimination device according to claim 3, characterized in that: One end of the fan (25) is fixedly connected to a mounting ring (27), and one side of the outer surface of the mounting ring (27) is rotatably connected to a rear cover (28).

5. The acid gas capture and elimination device according to claim 1, characterized in that: The top of the scavenger storage tank (9) is fixedly connected to a feed pipe (12), the top of the feed pipe (12) is abutted against a cover (13), and the side walls of the feed pipe (12) and the cover (13) are threadedly connected with a plurality of first bolts (14).

6. The acid gas capture and elimination device according to claim 1, characterized in that: One side of the outer surface of the scavenger storage tank (9) is fixedly connected to a connecting pipe (7), an electric control valve (8) is fixedly installed in the middle of the connecting pipe (7), and one end of the connecting pipe (7) is fixedly connected to a main pipe (6), and the bottom of the main pipe (6) is fixedly connected to a plurality of air pipes (5).

7. The acid gas capture and elimination device according to claim 6, characterized in that: A plurality of high-pressure driving gas cylinders (3) are fixedly mounted on one end of the upper surface of the movable base plate (1), and a gas outlet nozzle (4) is fixedly mounted on the top of each of the plurality of high-pressure driving gas cylinders (3), and one end of each of the plurality of gas outlet nozzles (4) is fixedly connected to one end of a corresponding gas pipe (5).

8. The acid gas capture and elimination device according to claim 1, characterized in that: One side of the outer surface of the foam tank (17) is fixedly connected to a second discharge pipe (19), and the bottom of the foam tank (17) is fixedly connected to a plurality of diagonal braces (18), and the bottom of the scavenger storage tank (9) is fixedly connected to a plurality of supporting legs (10), and the bottoms of the plurality of diagonal braces (18) and the supporting legs (10) are fixedly connected to the upper surface of the movable bottom plate (1).

9. The acid gas capture and elimination device according to claim 1, characterized in that: A protective frame (20) is fixedly connected to the outer side of the upper surface of the movable base plate (1), and universal wheels (2) are fixedly installed on all four sides of the lower surface of the movable base plate (1).

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