BOG recovery device

Abstract

The BOG recycling device is characterized in that a recycling bin is internally divided into a left cleaning cavity, a middle storage cavity and a right filtering cavity through a left partition plate and a right partition plate, the left cleaning cavity and the right filtering cavity are communicated with each other through a connecting pipe, and an activated carbon layer is arranged in the right filtering cavity and located on the upper surface of an upper-layer supporting net plate; the BOG recycling device is reasonable in structure, and BOG enters the middle storage cavity after being cleaned, filtered and dried in sequence during recycling, so that the cleanliness of the BOG is greatly improved, and the BOG recycling device is suitable for recycling of the BOG. Meanwhile, the left side cleaning cavity, the middle storage cavity and the right side filtering cavity are located in the same recycling bin, an integrated structure is adopted, transportation is convenient, additional connecting pipelines do not need to be connected, the cost input is greatly reduced, and the occupied area is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of BOG recovery equipment, in particular to a BOG recovery device. Background Technique

[0002] Since the daily evaporation rate of LNG in cryogenic storage tanks and cryogenic tank trucks is about 0.3%, this part of the evaporated gas (at a relatively low temperature) is simply called BOG flash gas (Boil Off Gas). To ensure the safety of natural gas storage tanks and prevent high pressure in the tanks, part of the flash gas in the storage tanks needs to be discharged.

[0003] If the BOG is directly discharged, it will affect the environment. However, the reuse of BOG can not only protect the environment but also realize the reuse of resources. At present, when the BOG recovery device is recycling, it is difficult to completely filter the BOG, resulting in poor utilization effect and greatly reduced utilization rate. Moreover, most of the BOG recovery devices with filtration are composed of multiple devices connected by external pipelines, which leads to inconvenient transportation, increased cost, and increased space occupancy rate. Therefore, an improved technology is urgently needed to solve this problem existing in the prior art. Content of the Utility Model

[0004] The purpose of the utility model is to provide a BOG recovery device. The interior of the recovery bin is divided into a left cleaning chamber, a middle storage chamber, and a right filtering chamber by a left partition and a right partition. The left cleaning chamber and the right filtering chamber are interconnected through a connecting pipe. When the BOG is recovered, it passes through cleaning, filtering, and drying in sequence and then enters the middle storage chamber, thereby greatly improving the cleanliness of the BOG gas, realizing reuse and increasing the utilization rate. At the same time, the left cleaning chamber, the middle storage chamber, and the right filtering chamber are located in the same recovery bin, with an integrated structure, which is convenient for transportation, does not require additional connection of pipelines, greatly reduces the cost investment, and saves the floor area, so as to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present utility model provides the following technical solutions: a BOG recovery device, comprising a recovery bin, a left partition, a right partition, a connecting pipe and an air inlet pipe. A bin cover is provided on the upper surface of the recovery bin. A left partition and a right partition are provided inside the recovery bin. The inside of the recovery bin is divided into a left cleaning chamber, a middle storage chamber and a right filtering chamber by the left partition and the right partition. A connecting pipe is provided at the upper part between the left partition and the right partition. The left cleaning chamber and the right filtering chamber are interconnected through the connecting pipe. An air inlet and a liquid inlet are provided on the upper surface of the bin cover at the position of the left cleaning chamber. The air inlet is connected to the air inlet pipe through a one-way valve. Both the one-way valve and the air inlet pipe are arranged inside the left cleaning chamber. An air outlet is provided on the upper surface of the bin cover at the position of the middle storage chamber. An upper support mesh plate and a lower support mesh plate are provided inside the right filtering chamber. An activated carbon layer is provided on the upper surface of the upper support mesh plate inside the right filtering chamber. A drying filler layer is provided on the upper surface of the lower support mesh plate inside the right filtering chamber. A communication port is provided at the lower part of the right partition. A screen is provided at the position of the communication port on the right partition.

[0006] Preferably, in a BOG recovery device provided by the present utility model, a liquid discharge port is provided at the bottom of the outer surface of the recovery bin at the position of the left cleaning chamber.

[0007] Preferably, in a BOG recovery device provided by the present utility model, a first manhole is provided at the upper part of the outer surface of the recovery bin at the position of the left cleaning chamber.

[0008] Preferably, in a BOG recovery device provided by the present utility model, a second manhole is provided on the surface of the recovery bin at the position of the middle storage chamber.

[0009] Preferably, in a BOG recovery device provided by the present utility model, the bottom of the air inlet pipe is located at the bottom end of the left cleaning chamber.

[0010] Preferably, in a BOG recovery device provided by the present utility model, a pressure gauge port is further provided on the upper surface of the bin cover at the position of the middle storage chamber.

[0011] Preferably, in a BOG recovery device provided by the present utility model, a third manhole, a fourth manhole, a first discharge port and a second discharge port are provided on the outer surface of the recovery bin at the position of the right cleaning chamber.

[0012] Preferably, in a BOG recovery device provided by the present utility model, a plurality of support legs are provided at the bottom of the recovery bin.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] Inside the recovery bin, it is divided into a left cleaning chamber, a middle storage chamber, and a right filtering chamber by a left partition and a right partition. The left cleaning chamber and the right filtering chamber are interconnected through a connecting pipe. When recovering BOG, it passes through cleaning, filtering, and drying in sequence and then enters the middle storage chamber, thus greatly improving the cleanliness of the BOG gas, realizing reuse and improving the utilization rate. At the same time, the left cleaning chamber, the middle storage chamber, and the right filtering chamber are located in the same recovery bin, with an integrated structure, which is convenient for transportation, does not require additional connection of pipelines, greatly reduces the cost investment, and saves the floor area. Brief Description of the Drawings

[0015] Figure 1 It is a structural schematic diagram of the present utility model;

[0016] Figure 2 It is an external structural schematic diagram of the present utility model;

[0017] Figure 3 It is a top view structural schematic diagram of the recovery bin.

[0018] In the figure: recovery bin 1, left partition 2, right partition 3, connecting pipe 4, inlet pipe 5, bin cover 6, left cleaning chamber 7, middle storage chamber 8, right filtering chamber 9, air inlet 10, liquid inlet 11, check valve 12, air outlet 13, upper support mesh plate 14, lower support mesh plate 15, activated carbon layer 16, drying packing layer 17, communication port 18, screen 19, drain port 20, first manhole 21, second manhole 22, pressure gauge port 23, third manhole 24, fourth manhole 25, first discharge port 26, second discharge port 27, support leg 28. Detailed Embodiment

[0019] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model;

[0020] It should be noted that in the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "inside", "outside", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0021] Please refer to Figures 1-3, the present utility model provides a technical solution: a BOG recovery device, including a recovery bin 1, a left partition 2, a right partition 3, a connecting pipe 4 and an air inlet pipe 5. A bin cover 6 is provided on the upper surface of the recovery bin 1. Inside the recovery bin 1, a left partition 2 and a right partition 3 are provided. The inside of the recovery bin 1 is divided into a left cleaning chamber 7, a middle storage chamber 8 and a right filtering chamber 9 by the left partition 2 and the right partition 3. An upper part between the left partition 2 and the right partition 3 is provided with a connecting pipe 4. The left cleaning chamber 7 and the right filtering chamber 9 are interconnected through the connecting pipe 4. On the upper surface of the bin cover 6 and at the position of the left cleaning chamber 7, an air inlet 10 and a liquid inlet 11 are provided. The air inlet 10 is connected to the air inlet pipe 5 through a check valve 12. The check valve 12 and the air inlet pipe 5 are both arranged inside the left cleaning chamber 7. The bottom of the air inlet pipe 5 is located at the bottom end of the left cleaning chamber 7 to ensure that the bottom of the air inlet pipe 5 is immersed in the cleaning solution, so as to realize the cleaning when BOG enters the air, and leave most of the particles in the BOG in the cleaning solution. On the upper surface of the bin cover 6 and at the position of the middle storage chamber 8, an air outlet 13 is provided. On the upper surface of the bin cover 6 and at the position of the middle storage chamber 8, a pressure gauge port 23 is also provided to realize the installation of a pressure gauge, so as to realize the pressure detection of the middle storage chamber 8. Inside the right filtering chamber 9, an upper support mesh plate 14 and a lower support mesh plate 15 are provided. Inside the right filtering chamber 9 and on the upper surface of the upper support mesh plate 14, an activated carbon layer 16 is provided. Inside the right filtering chamber 9 and on the upper surface of the lower support mesh plate 15, a drying filler layer 17 is provided. A communication port 18 is provided at the lower part of the right partition 3. A sieve mesh 19 is provided at the position of the right partition 3 where the communication port 18 is located. On the outer surface of the recovery bin 1 and at the bottom of the left cleaning chamber 7, a liquid discharge port 20 is provided to realize the periodic discharge of the cleaning solution. On the outer surface of the recovery bin 1 and at the upper part of the left cleaning chamber 7, a first manhole 21 is provided for the maintenance of the check valve 12 and the air inlet pipe 5, and at the same time, the liquid level inside the left cleaning chamber 7 can be viewed. On the surface of the recovery bin 1 and at the position of the middle storage chamber 8, a second manhole 22 is provided. Through the second manhole 22, the subsequent disassembly and replacement of the sieve mesh 19 can be realized. On the outer surface of the recovery bin 1 and at the position of the right cleaning chamber, a third manhole 24, a fourth manhole 25, a first discharge port 26 and a second discharge port 27 are provided. Through the third manhole 24 and the fourth manhole 25, the addition of the activated carbon layer and the drying filler can be realized respectively. Through the first discharge port 26 and the second discharge port 27, the replacement and discharge of the activated carbon and the drying filler can be realized respectively. Several support legs 28 are provided at the bottom of the recovery bin 1 to realize the elevation and support of the recovery bin 1.

[0022] Installation method and operating principle: Install the intake pipe 5 under the lower surface of the bin cover 6 through the one-way valve 12. Subsequently, install the upper support mesh plate 14 and the lower support mesh plate 15 in the right filter chamber 9. Then, fill the activated carbon layer 16 on the upper support mesh plate 14 through the third manhole 24, and fill the drying filler layer 17 on the lower support mesh plate 15 through the fourth manhole 25. Install the connecting pipe 4 between the left partition 2 and the right partition 3. Then, install the screen 19 at the communication port 18 at the bottom of the right partition 3. Finally, lift the bin cover 6 and install it on the upper surface of the recovery bin 1. At this time, the intake pipe 5 is inserted into the left cleaning chamber 7 to complete the installation. When in use, add the cleaning solvent from the liquid inlet 11 into the left cleaning chamber 7 of the recovery bin 1, and send the BOG from the air inlet 10 and the intake pipe 5 into the left cleaning chamber 7 through the pump. First, after being cleaned by the cleaning solvent, it enters the right partition 3 through the connecting pipe 4. Then, the impurities are adsorbed by the activated carbon layer 16, and then dried by the drying filler layer 17. Finally, it enters the storage chamber through the communication port 18 to achieve recovery. The structure of the utility model is reasonable. The inside of the recovery bin 1 is divided into a left cleaning chamber 7, a middle storage chamber 8, and a right filter chamber 9 by the left partition 2 and the right partition 3. The left cleaning chamber 7 and the right filter chamber 9 are interconnected through the connecting pipe 4. When the BOG is recovered, it sequentially passes through cleaning, filtration, and drying and then enters the middle storage chamber 8, thereby greatly improving the cleanliness of the BOG gas, realizing reuse and improving the utilization rate. At the same time, the left cleaning chamber 7, the middle storage chamber 8, and the right filter chamber 9 are located in the same recovery bin 1, with an integrated structure, which is convenient for transportation, does not require additional connection of the connecting pipe 4, greatly reduces the cost investment, and saves the floor area.

[0023] For those parts not detailed in the present utility model, they are all well-known technologies to those skilled in the art.

[0024] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and they should all be covered within the scope of the claims of the present utility model.

Claims

1. A BOG recovery device, characterized in that: It includes a recycling bin (1), a left partition board (2), a right partition board (3), a connecting pipe (4) and an air inlet pipe (5). A bin cover (6) is arranged on the upper surface of the recycling bin (1). Inside the recycling bin (1), a left partition board (2) and a right partition board (3) are arranged. The inside of the recycling bin (1) is divided into a left cleaning chamber (7), a middle storage chamber (8) and a right filtering chamber (9) by the left partition board (2) and the right partition board (3). A connecting pipe (4) is arranged at the upper part between the left partition board (2) and the right partition board (3). The left cleaning chamber (7) and the right filtering chamber (9) are communicated with each other through the connecting pipe (4). An air inlet (10) and a liquid inlet (11) are arranged on the upper surface of the bin cover (6) at the position of the left cleaning chamber (7). The air inlet (10) is connected with the air inlet pipe (5) through a one-way valve (12). The one-way valve (12) and the air inlet pipe (5) are both arranged inside the left cleaning chamber (7). An air outlet (13) is arranged on the upper surface of the bin cover (6) at the position of the middle storage chamber (8). An upper support mesh plate (14) and a lower support mesh plate (15) are arranged inside the right filtering chamber (9). An activated carbon layer (16) is arranged on the upper surface of the upper support mesh plate (14) inside the right filtering chamber (9). A drying filler layer (17) is arranged on the upper surface of the lower support mesh plate (15) inside the right filtering chamber (9). A communication port (18) is arranged at the lower part of the right partition board (3). A sieve mesh (19) is arranged at the position of the communication port (18) on the right partition board (3).

2. The BOG recovery device according to claim 1, wherein: A liquid discharge port (20) is arranged on the outer surface of the recycling bin (1) at the bottom of the left cleaning chamber (7).

3. The BOG recovery device according to claim 1, characterized in that: A first manhole (21) is arranged on the outer surface of the recycling bin (1) at the upper part of the left cleaning chamber (7).

4. A BOG recovery device according to claim 1, characterized in that: A second manhole (22) is arranged on the surface of the recycling bin (1) at the position of the middle storage chamber (8).

5. The BOG recovery device according to claim 1, characterized in that: The bottom of the air inlet pipe (5) is located at the bottom end of the left cleaning chamber (7).

6. The BOG recovery device according to claim 1, characterized in that: A pressure gauge port (23) is also arranged on the upper surface of the bin cover (6) at the position of the middle storage chamber (8).

7. A BOG recovery device according to claim 1, characterized in that: A third manhole (24), a fourth manhole (25), a first discharge port (26) and a second discharge port (27) are arranged on the outer surface of the recycling bin (1) at the position of the right cleaning chamber.

8. A BOG recovery device according to claim 1, characterized in that: A plurality of support legs (28) are arranged at the bottom of the recycling bin (1).

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