Recycling and purifying device for waste gas in storage tank area

Abstract

The invention relates to a recycling and purifying device for waste gas in a storage tank area, which belongs to the technical field of waste gas treatment and comprises a treatment box, an absorption structure arranged at the top of the treatment box, a partition plate fixedly mounted at the upper position in the treatment box and dividing an inner cavity of the treatment box into two parts, a driving structure arranged at the top of the partition plate and a cleaning structure arranged at the bottom of the partition plate. The cleaning structure comprises a plurality of scrapers and an inner gear ring, the inner gear ring is rotationally mounted on the inner wall, close to one end of the partition plate, of the treatment box, the scrapers are annularly arrayed at the bottom of the inner gear ring, the bottoms of the scrapers extend to the bottom wall of the treatment box, the side walls of the scrapers abut against the inner wall of the treatment box, and the inner gear ring is driven by the driving structure. All transmission on the device is achieved through the double-shaft motor, the double-shaft motor drives the absorption structure, the cleaning structure and the rotating rod to rotate at the same time, the absorption structure and the rotating rod are rotated while the inner wall of the treatment box is cleaned, and the absorption area of oil gas and the diffusion area of cold air are increased.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and in particular to a device for recovering and purifying waste gas from a tank farm. Background Technology

[0002] During large-scale loading of gasoline, diesel, kerosene, toluene, and xylene, the volatile oil and gas are often directly emitted or recycled and mixed with lower-grade oil products due to impurities in the air. This not only pollutes the air but also wastes resources. Therefore, the technology for recovering and purifying exhaust gases from tank farms has always been a key research topic in the fields of petroleum storage and transportation engineering, environmental engineering, and chemical engineering both domestically and internationally.

[0003] Currently, the main exhaust gas in tank farms is oil and gas. The general treatment method for oil and gas is condensation + adsorption. Oil and gas need to be pumped into the treatment tank. The existing treatment tank absorbs oil and gas at a fixed angle, with a small absorption area. After entering the treatment tank, the oil and gas will disperse in all directions. However, the diffusion area of ​​the treatment liquid entering the tank is small, which will lead to uneven condensation. After condensation, the solidified oil and gas will adhere to the inner wall of the treatment tank, which is inconvenient to clean. Long-term accumulation will also cause a lot of waste of oil and gas. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a device for recovering and purifying exhaust gas from tank farms, achieved through the following technical solution: A device for recovering and purifying waste gas from a tank area includes a treatment box and a sealed bearing. An absorption structure is installed at the top of the treatment box. A partition is fixedly installed at the upper part of the interior of the treatment box, dividing the inner cavity of the treatment box into two parts. A driving structure is installed at the top of the partition, and a cleaning structure is installed at the bottom of the partition. The cleaning structure includes multiple scrapers and an internal gear ring. The internal gear ring is rotatably mounted on the inner wall of the treatment box near the partition. Multiple scrapers are arranged in a ring array at the bottom of the internal gear ring, with the bottom of the scrapers extending to the bottom wall of the treatment box. The sidewalls of the scrapers abut against the inner wall of the treatment box. The internal gear ring is driven by the driving structure. An outlet pipe is connected to the bottom of the sidewall of the treatment box, and an activated carbon adsorption layer is installed at the outlet of the outlet pipe. A discharge pipe is connected to the other side of the bottom of the sidewall of the treatment box.

[0005] Furthermore, the drive structure includes a dual-axis motor, a first rotating shaft, and a second rotating shaft. The dual-axis motor is vertically fixed above the partition via a motor mounting bracket. The upper output end of the dual-axis motor is fixedly connected to the first rotating shaft. The top of the first rotating shaft penetrates the top wall of the processing box and extends to the outside of the processing box, connecting with the absorption structure. The first rotating shaft and the top wall of the processing box are rotatably connected via a sealed bearing. The lower output end of the dual-axis motor is fixedly connected to the second rotating shaft. The bottom of the second rotating shaft penetrates the partition and extends below the partition. The second rotating shaft and the partition are rotatably connected via a sealed bearing. A spur gear is fixedly connected to the bottom of the second rotating shaft, and the spur gear meshes with an internal gear ring.

[0006] Furthermore, the absorption structure includes two air collection ports, an air intake pipe, an air pump, and an air inlet pipe. The air pump is fixedly installed on the top of the processing box, the air intake pipe is fixedly installed at the air pump inlet end, the top part of the air intake pipe has two branch pipes, the two air collection ports are respectively fixed on the two branch pipes of the air intake pipe, the air inlet pipe is fixedly installed at the air pump outlet end, and the air inlet pipe passes through the top wall of the processing box and the partition in sequence, extending to the bottom of the partition.

[0007] Furthermore, a rotary joint is provided in the middle of the air intake pipe, and a driven sprocket is fixedly installed on the outer ring of the section of the air intake pipe above the rotary joint. A driving sprocket is fixedly installed on the top of the rotating shaft. A chain is engaged on the outer rings of the driving sprocket and the driven sprocket. The driving sprocket and the driven sprocket are driven by the chain.

[0008] Furthermore, a rotating rod is vertically installed in the middle of the processing box. The rotating rod passes through the partition and is rotatably connected to the inner top wall of the processing box. The rotating rod and the partition are rotatably connected through a sealed bearing. A driven sprocket two is fixedly installed on the outer ring of the rotating rod on the upper side of the partition. A driving sprocket two is fixedly installed on the outer ring of the rotating shaft two on the upper side of the partition. A chain two meshes with the outer rings of the driven sprocket two and the driving sprocket two. The driven sprocket two and the driving sprocket two are driven by the chain two.

[0009] Furthermore, an end face gear is fixedly installed on the outer ring of the rotating rod at the bottom of the partition, and four bevel gears mesh with the top of the end face gear. The four bevel gears are arranged in a circular array along the rotating rod. A rotating shaft three is fixedly installed on the outer side of the end face gear, and a stirring fan is fixedly installed on the end of the rotating shaft three away from the bevel gear.

[0010] Furthermore, a cylindrical box with an internal cavity is fixedly installed on the outer ring of the rotating rod. The end face gear and the bevel gear are both enclosed in the cavity of the cylindrical box. The rotating shaft three is installed through the side wall of the cylindrical box. The rotating shaft three is rotatably connected to the side wall of the cylindrical box through a sealed bearing. The top wall and bottom wall of the cylindrical box are rotatably connected to the rotating rod through sealed bearings. A limit rod is fixedly installed on the top of the cylindrical box. The top of the limit rod is fixedly connected to the bottom of the partition plate.

[0011] Furthermore, a cooling fan is installed on the top of the processing box, and a fan-shaped nozzle is connected to the side wall of the cooling fan. The fan-shaped nozzle passes through the top wall and the partition of the processing box in sequence and extends to the bottom of the partition.

[0012] Furthermore, the side walls of the processing box on the upper side of the partition are respectively provided with an air outlet and an air inlet. A duct exhaust fan is fixedly connected to the outside of the air outlet, a filter screen is snapped into the air inlet, and an air pressure balancing valve is installed on the partition.

[0013] In summary, the beneficial technical effects of the present invention are as follows: A dual-axis motor is used to realize all the transmissions on the device. The dual-axis motor drives the absorption structure, cleaning structure and rotating rod to rotate simultaneously. While cleaning the inner wall of the treatment tank, it also rotates the absorption structure and rotating rod, increasing the absorption area of ​​oil and gas and the diffusion area of ​​cold air. A dual-shaft motor drives a spur gear, which in turn rotates a meshing internal gear ring. The internal gear ring drives a scraper to clean the inner wall of the treatment chamber, preventing oil and gas waste. Driven sprockets one and two, along with chain one, rotate the suction pipe, which in turn rotates the air collection port, achieving 360° rotation and expanding the collection range to improve oil and gas collection efficiency. Driven sprocket two, driven sprocket two, and chain two drive a rotating rod, which in turn rotates an end-face gear. This end-face gear, in turn, rotates a meshing bevel gear, which in turn rotates the stirring fan. This disperses the cold air and oil and gas ejected from the fan-shaped nozzle, achieving uniform mixing. The air outlet and inlet provide cooling for the dual-shaft motor, and a filter traps dust. Attached Figure Description

[0014] Figure 1 This is a schematic diagram illustrating the structure of the present invention.

[0015] Figure 2 This is a schematic diagram illustrating the internal structure of the processing box of the present invention.

[0016] Figure 3 This is a schematic diagram illustrating the dual-axis motor drive structure of the present invention.

[0017] Figure 4 This is a schematic diagram illustrating the stirring fan of the present invention.

[0018] Figure 5 This is a schematic diagram illustrating the driving structure of the present invention.

[0019] Reference numerals: 1. Processing box; 2. Absorption structure; 201. Air collection port; 202. Air suction pipe; 203. Air pump; 204. Air inlet pipe; 3. Partition plate; 4. Drive structure; 401. Dual-shaft motor; 402. Rotating shaft one; 403. Rotating shaft two; 404. Spur gear; 5. Cleaning structure; 501. Scraper; 502. Internal gear ring; 6. Rotary joint; 7. Driven sprocket one; 8. Driven sprocket one; 9. Chain one; 10. Rotating rod; 11. Driven sprocket two; 12. Driven sprocket two; 13. Chain two; 14. End face gear; 15. Bevel gear; 16. Rotating shaft three; 17. Stirring fan; 18. Cylindrical box; 19. Limiting rod; 20. Air cooler; 21. Air outlet pipe; 22. Air outlet; 23. Air inlet; 24. Filter screen. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Example like Figure 1-5 As shown, this invention discloses a device for recovering and purifying waste gas from a tank area, comprising a treatment tank 1 and a sealed bearing. An absorption structure 2 is provided on the top of the treatment tank 1. A partition 3 is fixedly installed at the upper part of the interior of the treatment tank 1, dividing the inner cavity of the treatment tank 1 into two parts. A driving structure 4 is provided on the top of the partition 3, and a cleaning structure 5 is provided at the bottom of the partition 3. The cleaning structure 5 includes multiple scrapers 501 and an internal gear ring 502. The internal gear ring 502 is rotatably mounted on the inner wall of the treatment tank 1 near the partition 3. Multiple scrapers 501 are arranged in a ring array at the bottom of the internal gear ring 502, with the bottom of the scrapers 501 extending to the bottom wall of the treatment tank 1. The sidewalls of the scrapers 501 abut against the inner wall of the treatment tank 1. The internal gear ring 502 is driven by the driving structure 4. An outlet pipe is connected to the bottom of the sidewall of the treatment tank 1, and an activated carbon adsorption layer is installed at the outlet of the outlet pipe. A discharge pipe is connected to the other side of the bottom of the sidewall of the treatment tank 1.

[0022] The drive structure 4 includes a dual-axis motor 401, a first rotating shaft 402, and a second rotating shaft 403. The dual-axis motor 401 is a motor capable of starting from one side or both sides simultaneously. The dual-axis motor 401 is vertically fixed above the partition 3 via a motor mounting bracket. The upper output end of the dual-axis motor 401 is fixedly connected to the first rotating shaft 402. The top of the first rotating shaft 402 penetrates the top wall of the processing box 1 and extends to the outside of the processing box 1, connecting with the absorption structure 2. The first rotating shaft 402 is rotatably connected to the top wall of the processing box 1 via a sealed bearing. The lower output end of the dual-axis motor 401 is fixedly connected to the second rotating shaft 403. The bottom of the second rotating shaft 403 penetrates the partition 3 and extends below the partition 3. The second rotating shaft 403 is rotatably connected to the partition 3 via a sealed bearing. A spur gear 404 is fixedly connected to the bottom of the second rotating shaft 403, and the spur gear 404 meshes with an internal gear ring 502.

[0023] The absorption structure 2 includes two air collection ports 201, an air suction pipe 202, an air pump 203, and an air inlet pipe 204. The air pump 203 is fixedly installed on the top of the treatment box 1. The air suction pipe 202 is fixedly installed at the air inlet end of the air pump 203. The top part of the air suction pipe 202 is provided with two branch pipes. The two air collection ports 201 are respectively fixed on the two branch pipes of the air suction pipe 202. The air inlet pipe 204 is fixedly installed at the air outlet end of the air pump 203. The air inlet pipe 204 passes through the top wall of the treatment box 1 and the partition 3 in sequence and extends to the bottom of the partition 3.

[0024] A rotary joint 6 is located at the middle of the suction pipe 202. A driven sprocket 7 is fixedly installed on the outer ring of the section of the suction pipe 202 above the rotary joint 6. A driving sprocket 8 is fixedly installed on the top of the rotating shaft 402. A chain 9 meshes with the outer rings of the driving sprocket 8 and the driven sprocket 7, and the driving sprocket 8 and the driven sprocket 7 are driven by the chain 9. When applied to other oil and gas collection scenarios, if the gas collection port 201 does not need to rotate and only needs to absorb oil and gas at a fixed position, the side of the dual-shaft motor 401 connected to the rotating shaft 402 is closed, and only the side connected to the rotating shaft 403 is activated.

[0025] A rotating rod 10 is vertically installed in the middle of the processing box 1. The rotating rod 10 passes through the partition 3 and is rotatably connected to the inner top wall of the processing box 1. The rotating rod 10 and the partition 3 are rotatably connected through a sealed bearing. A driven sprocket 11 is fixedly installed on the outer ring of the rotating rod 10 on the upper side of the partition 3. A driving sprocket 12 is fixedly installed on the outer ring of the rotating shaft 403 on the upper side of the partition 3. A chain 13 meshes with the outer rings of the driven sprocket 11 and the driving sprocket 12. The driven sprocket 11 and the driving sprocket 12 are driven by the chain 13.

[0026] An end face gear 14 is fixedly installed on the outer ring of the rotating rod 10 at the bottom of the partition 3. Four bevel gears 15 are meshed on the top of the end face gear 14. The four bevel gears 15 are arranged in a circular array along the rotating rod 10. A rotating shaft 16 is fixedly installed on the outer side of the end face gear 14. A stirring fan 17 is fixedly installed on the end of the rotating shaft 16 away from the bevel gears 15.

[0027] A cylindrical box 18 with an internal cavity is fixedly installed on the outer ring of the rotating rod 10. The end face gear 14 and bevel gear 15 are both enclosed in the cavity of the cylindrical box 18. The rotating shaft 16 passes through the side wall of the cylindrical box 18 and is rotatably connected to the side wall of the cylindrical box 18 through a sealed bearing. The top and bottom walls of the cylindrical box 18 are rotatably connected to the rotating rod 10 through sealed bearings. A limit rod 19 is fixedly installed on the top of the cylindrical box 18 and the top of the limit rod 19 is fixedly connected to the bottom of the partition plate 3.

[0028] A cooler 20 is installed on the top of the processing box 1. An air outlet pipe 21 is fixedly connected to the air outlet end of the cooler 20. A fan-shaped nozzle is fixedly installed at the end of the air outlet pipe 21 away from the cooler 20. The air outlet pipe 21 passes through the top wall of the processing box 1 and the partition 3 in sequence and extends to the bottom of the partition 3.

[0029] The air inlet pipe 204 and the air outlet pipe 21 are both located above the stirring fan 17. After the oil and gas and the cold air enter the processing box 1, they are directly scattered to achieve uniform mixing.

[0030] The processing box 1 on the upper side of the partition 3 has an air outlet 22 and an air inlet 23 respectively on its two side walls. A duct exhaust fan is fixedly connected to the outside of the air outlet 22, and a filter screen 24 is snapped into the air inlet 23. An air pressure balance valve is installed on the partition 3.

[0031] The specific implementation of this example is as follows: The air pump 203 is started. Under negative pressure, the oil and gas volatilized in the storage tank area enters the suction pipe 202 through the air collection port 201, and then enters the processing tank 1 through the suction pipe 202. The air cooler 20 is started, and cold air is sprayed into the processing tank 1 through fan-shaped nozzles. Simultaneously, the dual-shaft motor 401 is started, driving the first shaft 402 and the second shaft 403 to rotate simultaneously. The rotation of the first shaft 402 drives the first drive sprocket 8 to rotate, which in turn drives the driven sprocket 7 to rotate under the action of the first chain 9, thereby driving the upper section of the suction pipe 202 to rotate, causing the two air collection ports 201 to perform circular motion, expanding the air collection range. The rotation of the second shaft 403 drives the second drive sprocket 12 to rotate, which in turn drives the rotating rod 10 to rotate through the second chain 13. The rotation of shaft 10 drives the end face gear 14 to rotate, which in turn drives the bevel gear 15 to rotate, thereby driving the stirring fan 17 to rotate. This disperses and mixes the oil and cold air entering the treatment box 1, achieving uniform cooling. The condensed oil and gas adhere to the inner wall of the treatment box 1. The rotation of shaft 2 403 also drives the spur gear 404 to rotate, which in turn drives the internal gear ring 502 that meshes with it to rotate, thereby driving the scraper 501 to rotate. This scraper removes the condensed oil and gas adhering to the inner wall of the treatment box 1 and finally discharges it through the discharge pipe for recycling. The cold air entering the treatment box 1 is discharged from the exhaust pipe after absorbing heat. When the dual-shaft motor 401 is working, the duct exhaust fan acts in the space at the top of the partition 3 to dissipate heat from the dual-shaft motor 401, ensuring the long-term stable operation of the dual-shaft motor 401.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for recovering and purifying waste gas from a tank farm, comprising a treatment tank (1), characterized in that, The processing box (1) is provided with an absorption structure (2) at the top. A partition (3) is fixedly installed at the upper position inside the processing box (1). The partition (3) divides the inner cavity of the processing box (1) into two parts. A driving structure (4) is provided at the top of the partition (3). A cleaning structure (5) is provided at the bottom of the partition (3). The cleaning structure (5) includes multiple scrapers (501) and an internal gear ring (502). The internal gear ring (502) is rotatably installed in the processing box (1) near the partition (2). 3) On the inner wall of one end, a plurality of scrapers (501) are arranged in a ring at the bottom of the inner toothed ring (502). The bottom of the scraper (501) extends to the bottom wall of the processing box (1). The side wall of the scraper (501) abuts against the inner wall of the processing box (1). The inner toothed ring (502) is driven by the driving structure (4). An air outlet pipe is connected to the bottom of the side wall of the processing box (1). An activated carbon adsorption layer is installed at the air outlet of the air outlet pipe. An exhaust pipe is connected to the other side of the bottom of the side wall of the processing box (1).

2. The device for recovering and purifying waste gas from a tank farm according to claim 1, characterized in that, The drive structure (4) includes a dual-axis motor (401), a first rotating shaft (402), and a second rotating shaft (403). The dual-axis motor (401) is vertically fixed above the partition (3) via a motor mounting base. The upper output end of the dual-axis motor (401) is fixedly connected to the first rotating shaft (402). The top of the first rotating shaft (402) penetrates the top wall of the processing box (1) and extends to the outside of the processing box (1) to connect with the absorption structure (2). The dual-shaft motor (401) is rotatably connected to the top wall of the processing box (1) through a sealed bearing. The lower output end of the dual-shaft motor (401) is fixedly connected to the second rotating shaft (403). The bottom of the second rotating shaft (403) passes through the partition (3) and extends to the bottom of the partition (3). The second rotating shaft (403) is rotatably connected to the partition (3) through a sealed bearing. A spur gear (404) is fixedly connected to the bottom of the second rotating shaft (403). The spur gear (404) meshes with the internal gear ring (502).

3. The device for recovering and purifying waste gas from a tank farm according to claim 2, characterized in that, The absorption structure (2) includes two air collection ports (201), an air suction pipe (202), an air pump (203), and an air inlet pipe (204). The air pump (203) is fixedly installed on the top of the processing box (1). The air suction pipe (202) is fixedly installed at the air inlet end of the air pump (203). The top part of the air suction pipe (202) is provided with two branch pipes. The two air collection ports (201) are respectively fixed on the two branch pipes of the air suction pipe (202). The air inlet pipe (204) is fixedly installed at the air outlet end of the air pump (203). The air inlet pipe (204) passes through the top wall of the processing box (1) and the partition (3) in sequence and extends to the bottom of the partition (3).

4. The device for recovering and purifying waste gas from a tank farm according to claim 3, characterized in that, A rotary joint (6) is provided in the middle of the air intake pipe (202). A driven sprocket (7) is fixedly installed on the outer ring of the section of the air intake pipe (202) above the rotary joint (6). A driving sprocket (8) is fixedly installed on the top of the rotating shaft (402). A chain (9) meshes with the outer rings of the driving sprocket (8) and the driven sprocket (7). The driving sprocket (8) and the driven sprocket (7) are driven by the chain (9).

5. The device for recovering and purifying waste gas from a tank farm according to claim 4, characterized in that, A rotating rod (10) is vertically arranged in the middle of the processing box (1). The rotating rod (10) passes through the partition (3) and is rotatably connected to the inner top wall of the processing box (1). The rotating rod (10) and the partition (3) are rotatably connected through a sealed bearing. A driven sprocket (11) is fixedly installed on the outer ring of the rotating rod (10) on the upper side of the partition (3). A driving sprocket (12) is fixedly installed on the outer ring of the rotating shaft (403) on the upper side of the partition (3). A chain (13) meshes with the outer rings of the driven sprocket (11) and the driving sprocket (12). The driven sprocket (11) and the driving sprocket (12) are driven by the chain (13).

6. The device for recovering and purifying waste gas from a tank farm according to claim 5, characterized in that, An end face gear (14) is fixedly installed on the outer ring of the rotating rod (10) at the bottom of the partition (3). Four bevel gears (15) are meshed on the top of the end face gear (14). The bevel gears (15) are arranged in a circular array along the rotating rod (10). A rotating shaft three (16) is fixedly installed on the outside of the end face gear (14). A stirring fan (17) is fixedly installed at the end of the rotating shaft three (16) away from the bevel gears (15).

7. The device for recovering and purifying waste gas from a tank farm according to claim 6, characterized in that, The outer ring of the rotating rod (10) is fixedly installed with a cylindrical box (18) with an internal cavity. The end face gear (14) and bevel gear (15) are both enclosed in the cavity of the cylindrical box (18). The rotating shaft three (16) is set through the side wall of the cylindrical box (18). The rotating shaft three (16) is rotatably connected to the side wall of the cylindrical box (18) through a sealed bearing. The top wall and bottom wall of the cylindrical box (18) are rotatably connected to the rotating rod (10) through a sealed bearing. A limit rod (19) is fixedly installed on the top of the cylindrical box (18). The top of the limit rod (19) is fixedly connected to the bottom of the partition plate (3).

8. The device for recovering and purifying waste gas from a tank farm according to claim 1, characterized in that, A cooler (20) is installed on the top of the processing box (1). An air outlet pipe (21) is fixedly connected to the air outlet end of the cooler (20). A fan-shaped nozzle is fixedly installed at the end of the air outlet pipe (21) away from the cooler (20). The air outlet pipe (21) passes through the top wall of the processing box (1) and the partition (3) in sequence and extends to the bottom of the partition (3).

9. The device for recovering and purifying waste gas from a tank farm according to claim 1, characterized in that, The processing box (1) on the upper side of the partition (3) is provided with an air outlet (22) and an air inlet (23) on both sides. A duct exhaust fan is fixedly connected to the outside of the air outlet (22), and a filter screen (24) is snapped into the air inlet (23). An air pressure balance valve is installed on the partition (3).

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