Multistage adsorption wharf oil gas recovery device

Abstract

The utility model discloses a multistage adsorption wharf oil gas recovery device, which relates to the technical field of oil gas recovery devices and comprises a bottom bearing frame, the left sides of the front end and the rear end of the top of the bottom bearing frame are respectively and fixedly connected with an adsorption tower, and layered adsorption components capable of realizing multistage adsorption are arranged in the adsorption towers. The multistage adsorption wharf oil gas recovery device is provided with filler bearing plates, adsorption fillers, an oil gas concentration sensor, an access hole and a sealing cover, when the multistage adsorption wharf oil gas recovery device is used, four groups of filler bearing plates in an adsorption tower correspond to four groups of adsorption fillers, four groups of fillers with different adsorption efficiencies can be placed according to different positions, and gaps are formed among the four groups of adsorption fillers; the oil gas concentration sensor is mounted in the device, so that the adsorption efficiency of different layers of fillers can be observed, the multi-layer fillers form a multi-stage adsorption effect, the multi-stage adsorption function of the multi-layer fillers is realized, and the problem that the device does not have the multi-stage adsorption function of the multi-layer fillers is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas recovery devices, in particular to a wharf oil and gas recovery device with multi-stage adsorption. Background Technique

[0002] When a tanker refuels at a port, as the oil liquid is injected, the oil and gas in the oil tank will be synchronously exported to maintain the pressure balance inside the oil tank. After the exported oil and gas are condensed and adsorbed, they can be recycled and reused.

[0003] Most of the current wharf oil and gas recovery devices are similar in structure and are divided into three parts: an intake section, a condensation section, and a recovery section. The intake section is docked with the oil tank of the tanker, and the oil and gas are sent to the condensation section after pressure regulation. After being condensed and defrosted by a compressor and then raised to room temperature, a part of the condensed oil liquid will be recovered during this process. The remaining oil and gas enter the recovery device, are adsorbed by the adsorption packing in the adsorption tower, and then sprayed with oil liquid to complete the recovery. There are some functional deficiencies in the actual use process and there is room for improvement. For example, in the current wharf oil and gas recovery system, the structure of the adsorption tower is relatively fixed. Its main body is a large steel tower filled with adsorbent packing inside. The oil and gas rush in from the bottom and are sucked out from the bottom. When the single-layer packing intakes and exhausts gas, there is an obvious difference in the adsorption working intensity between the packing at the bottom layer and the packing at the top layer. The type of packing is usually one kind and multiple types of adsorption packing cannot be placed according to needs. Moreover, when replacing the packing, it can only be replaced all at once, which is rather troublesome in operation and does not have the function of multi-stage adsorption with multi-layer packing.

[0004] Now, a new type of wharf oil and gas recovery device with multi-stage adsorption is proposed to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a wharf oil and gas recovery device with multi-stage adsorption to solve the problem of lacking the function of multi-stage adsorption with multi-layer packing proposed in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solution: A multi-stage adsorption wharf oil and gas recovery device, including a bottom bearing frame, wherein the left sides of the front and rear ends of the top of the bottom bearing frame are respectively fixedly connected with adsorption towers, the left side of the bottom of the adsorption tower is provided with a first intake valve, the middle position of the left side of the top of the bottom bearing frame is fixedly connected with an intake main pipe, the front and rear ends of the intake main pipe are respectively provided with second intake valves, an intake branch pipe is fixedly connected between the first intake valve and the second intake valve, an exhaust main pipe is arranged above the intake main pipe, the front and rear ends of the exhaust main pipe are respectively provided with first exhaust valves, a vertical exhaust pipe is vertically fixedly connected to the middle position of the top of the exhaust main pipe, a second exhaust valve is installed at the middle position of the top of the adsorption tower, an exhaust branch pipe is fixedly connected between the first exhaust valve and the second exhaust valve, a spray tower is installed on the right side of the top of the bottom bearing frame, an oil liquid spray port is arranged at the top of the spray tower, an oil liquid extraction port is arranged at the bottom of the right side of the spray tower, a gas-liquid two-phase pump is arranged on the left side of the spray tower, a gas delivery pipe is fixedly connected between the right side of the gas-liquid two-phase pump and the left side of the spray tower, a collecting pipe is arranged on the left side of the gas-liquid two-phase pump, second outlet valves are respectively installed at the front and rear ends of the collecting pipe, a first outlet valve is installed at the right side of the bottom of the adsorption tower, an outlet pipe is fixedly connected between the first outlet valve and the second outlet valve, and a layered adsorption component capable of multi-stage adsorption is arranged inside the adsorption tower.

[0007] The layered adsorption component includes four groups of packing bearing plates, and the four groups of packing bearing plates are respectively fixedly connected inside the adsorption tower. Adsorption packing is filled at the top of the packing bearing plate. Four groups of oil and gas concentration sensors are installed on the left side of the adsorption tower. Four inspection openings are welded on the right side of the adsorption tower, and a sealing cover is fixedly connected to the right side of the inspection opening.

[0008] Preferably, the outer diameter of the packing bearing plate is consistent with the inner diameter of the adsorption tower, and the outer wall of the packing bearing plate is in close fit with the inner wall of the adsorption tower.

[0009] Preferably, the bottom end of the oil and gas concentration sensor is higher than the top end of the adsorption packing on its right side, and the right side of the oil and gas concentration sensor penetrates through the left side of the adsorption tower and extends to the inside.

[0010] Preferably, the positions of the packing bearing plates and the inspection openings correspond one by one, and the bottom end of the inspection opening is higher than the top end of the packing bearing plate on its left side.

[0011] Preferably, a support bracket is fixedly connected to the top end of the intake main pipe. A PLC logic controller is installed on the left side of the top end of the support bracket. A buzzer is fixedly connected to the right side of the PLC logic controller. A three-color alarm lamp is installed at the top end of the buzzer. A temperature sensor is fixedly connected to the bottom end of the PLC logic controller.

[0012] Preferably, the bottom end of the temperature sensor extends into the interior of the intake main pipe, and the PLC logic controller, the three-color alarm light, the buzzer, and the temperature sensor are electrically connected.

[0013] Preferably, a cylindrical shell is fixedly connected to the middle position of the bottom end of the adsorption tower. A negative pressure fan is installed at the bottom end of the cylindrical shell. Exhaust slots are respectively arranged at the front and rear ends of the cylindrical shell. A gas sensor is installed at the top end inside the cylindrical shell, and a sensor interface is arranged on the right side of the gas sensor.

[0014] Preferably, the vertical centerlines of the cylindrical shell and the negative pressure fan coincide, and the exhaust slots penetrate through the inner and outer surfaces of the cylindrical shell.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The multi-stage adsorption wharf oil and gas recovery device not only realizes the function of multi-level packing multi-stage adsorption, but also realizes the function of intake air temperature monitoring and the function of oil and gas leakage monitoring;

[0016] (1) By providing a packing bearing plate, adsorption packing, an oil and gas concentration sensor, a maintenance port, and a sealing cover, during use, after the oil and gas are condensed and cooled in the condensation section, they enter the intake main pipe. The two adsorption towers work alternately. For the working adsorption tower, its corresponding first intake valve and second intake valve are synchronously opened. The oil and gas enter the adsorption tower along the intake branch pipe and spread upward from bottom to top. The four packing bearing plates in the adsorption tower correspond to the four groups of adsorption packing, and four groups of packing with different adsorption efficiencies can be placed according to different positions. There is a gap between the four groups of adsorption packing, and the oil and gas concentration sensor is installed therein, so that the adsorption efficiency of different levels of packing can be observed. The multi-level packing forms a multi-stage adsorption effect. In the later stage, when replacing the packing, the sealing cover can be removed to clean and replace the adsorption packing on the top of the packing bearing plate, realizing the function of multi-level packing multi-stage adsorption;

[0017] (2) By providing a support bracket, a PLC logic controller, a three-color alarm light, a buzzer, and a temperature sensor, during use, as the oil and gas enter the adsorption tower, the air in the adsorption tower is squeezed and discharged outward through the exhaust branch pipe and the exhaust riser. During intake, the temperature sensor keeps monitoring the intake air temperature. When the temperature is abnormal, it indicates a malfunction in the condensation section. The three-color alarm light flashes, and at the same time the buzzer sounds to remind the staff to perform maintenance in time. The PLC logic controller provides program support for the operation of the components, realizing the function of intake air temperature monitoring;

[0018] (3) By being provided with a cylindrical shell, a negative pressure fan, an exhaust groove, a gas sensor and a sensor interface, during use, after the adsorbed oil and gas have removed the excess components, they are suctioned by a gas-liquid two-phase pump and sent into a spray tower. The oil liquid in the storage tank is pumped out and sprayed downward through an oil liquid spray port, and is mixed with the gas rich in oil and gas, so that the oil liquid and the oil and gas are fully mixed. The mixed oil liquid is pumped out from the oil liquid extraction port and sent back to the storage tank for storage. During the adsorption process, the negative pressure fan is started and the air near the adsorption tower is suctioned into the cylindrical shell and then discharged through the exhaust groove. The gas sensor in the cylindrical shell can detect the components of the incoming gas. When it is found that the oil and gas component exceeds the standard, it can be fed back to the management background through the sensor interface, which is convenient for the operation and maintenance personnel to check, realizing the function of oil and gas leakage monitoring. Description of the Drawings

[0019] Figure 1 It is a front view structural schematic diagram of the present utility model;

[0020] Figure 2 It is a side view structural schematic diagram of the adsorption tower of the present utility model;

[0021] Figure 3 For the present utility model Figure 1 It is a partial sectional enlarged structural schematic diagram at A in

[0022] Figure 4 It is a front view sectional structural schematic diagram of the adsorption tower of the present utility model;

[0023] Figure 5 It is a front view sectional enlarged structural schematic diagram of the cylindrical shell of the present utility model.

[0024] In the figure: 1, bottom bearing frame; 2, adsorption tower; 3, first intake valve; 4, intake branch pipe; 5, intake main pipe; 6, second intake valve; 7, exhaust main pipe; 8, first exhaust valve; 9, exhaust vertical pipe; 10, exhaust branch pipe; 11, second exhaust valve; 12, packing bearing plate; 13, adsorption packing; 14, oil and gas concentration sensor; 15, inspection opening; 16, sealing cover; 17, first outlet valve; 18, outlet pipe; 19, collecting pipe; 20, second outlet valve; 21, gas-liquid two-phase pump; 22, air supply pipe; 23, spray tower; 24, oil liquid spray port; 25, oil liquid extraction port; 26, support bracket; 27, PLC logic controller; 28, three-color alarm light; 29, buzzer; 30, temperature sensor; 31, cylindrical shell; 32, negative pressure fan; 33, exhaust groove; 34, gas sensor; 35, sensor interface. Detailed Implementation Manner

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1: Please refer to Figures 1-5 , a multi-stage adsorption wharf oil and gas recovery device, which includes a bottom bearing frame 1. The left sides of the front and rear ends of the top of the bottom bearing frame 1 are respectively fixedly connected with adsorption towers 2. A first intake valve 3 is installed on the left side of the bottom of the adsorption tower 2. An intake main pipe 5 is fixedly connected to the middle position of the left side of the top of the bottom bearing frame 1. Second intake valves 6 are installed at the front and rear ends of the intake main pipe 5. An intake branch pipe 4 is fixedly connected between the first intake valve 3 and the second intake valve 6. An exhaust main pipe 7 is arranged above the intake main pipe 5. First exhaust valves 8 are installed at the front and rear ends of the exhaust main pipe 7. An exhaust vertical pipe 9 is vertically fixedly connected to the middle position of the top of the exhaust main pipe 7. A second exhaust valve 11 is installed at the middle position of the top of the adsorption tower 2. An exhaust branch pipe 10 is fixedly connected between the first exhaust valve 8 and the second exhaust valve 11. A spray tower 23 is installed on the right side of the top of the bottom bearing frame 1. An oil liquid spray port 24 is arranged at the top of the spray tower 23. An oil liquid extraction port 25 is arranged at the bottom on the right side of the spray tower 23. A gas-liquid two-phase pump 21 is arranged on the left side of the spray tower 23. An air supply pipe 22 is fixedly connected between the right side of the gas-liquid two-phase pump 21 and the left side of the spray tower 23. A collecting pipe 19 is arranged on the left side of the gas-liquid two-phase pump 21. Second outlet valves 20 are installed at the front and rear ends of the collecting pipe 19. A first outlet valve 17 is installed on the right side of the bottom end of the adsorption tower 2. An outlet pipe 18 is fixedly connected between the first outlet valve 17 and the second outlet valve 20. A layered adsorption assembly capable of multi-stage adsorption is arranged inside the adsorption tower 2;

[0027] Please refer to Figures 1-5 , a multi-stage adsorption wharf oil and gas recovery device further includes a layered adsorption assembly. The layered adsorption assembly includes four groups of packing bearing plates 12, which are respectively fixedly connected inside the adsorption tower 2. Adsorption packing 13 is filled at the top of the packing bearing plate 12. Four groups of oil and gas concentration sensors 14 are installed on the left side of the adsorption tower 2. Four inspection ports 15 are welded on the right side of the adsorption tower 2. A sealing cover 16 is fixedly connected to the right side of the inspection port 15;

[0028] The outer diameter of the packing bearing plate 12 is consistent with the inner diameter of the adsorption tower 2. The outer wall of the packing bearing plate 12 is closely attached to the inner wall of the adsorption tower 2. The bottom end of the oil and gas concentration sensor 14 is higher than the top end of the adsorption packing 13 on its right side. The right side of the oil and gas concentration sensor 14 penetrates through the left side of the adsorption tower 2 and extends into the interior. The positions of the packing bearing plate 12 and the maintenance opening 15 correspond one by one. The bottom end of the maintenance opening 15 is higher than the top end of the packing bearing plate 12 on its left side. Multi-stage adsorption can be carried out through multiple layers of packing, and the adsorption effect can be monitored simultaneously.

[0029] Specifically, as Figure 1 , Figure 2 and Figure 4 shown, there are four groups of packing bearing plates 12 corresponding to four groups of adsorption packings 13 in the adsorption tower 2. Four groups of packings with different adsorption efficiencies can be placed according to different positions. There is a gap between the four groups of adsorption packings 13. The oil and gas concentration sensor 14 is installed therein, and the adsorption efficiency of different layers of packing can be observed. The multi-layer packing forms a multi-stage adsorption effect. When replacing the packing in the later stage, the sealing cover 16 can be removed to clean and replace the adsorption packing 13 on the top of the packing bearing plate 12.

[0030] Embodiment 2: A support bracket 26 is fixedly connected to the top end of the intake main pipe 5. A PLC logic controller 27 is installed on the left side of the top end of the support bracket 26. A buzzer 29 is fixedly connected to the right side of the PLC logic controller 27. A three-color alarm lamp 28 is installed on the top end of the buzzer 29. A temperature sensor 30 is fixedly connected to the bottom end of the PLC logic controller 27. The bottom end of the temperature sensor 30 extends into the interior of the intake main pipe 5. The PLC logic controller 27, the three-color alarm lamp 28, the buzzer 29, and the temperature sensor 30 are electrically connected, and the intake air temperature can be monitored.

[0031] Specifically, as Figure 1 and Figure 3 shown, the temperature sensor 30 keeps monitoring the intake air temperature. When the temperature is abnormal, it indicates a fault in the condensation section. The three-color alarm lamp 28 flashes, and at the same time the buzzer 29 emits a beep, reminding the staff to repair in time. The PLC logic controller 27 provides program support for the operation of the components.

[0032] Embodiment 3: A cylindrical shell 31 is fixedly connected to the middle position at the bottom end of the adsorption tower 2. A negative pressure fan 32 is installed at the bottom end of the cylindrical shell 31. Exhaust slots 33 are respectively arranged at the front and rear ends of the cylindrical shell 31. A gas sensor 34 is installed at the top end inside the cylindrical shell 31. A sensor interface 35 is arranged on the right side of the gas sensor 34. The vertical centerlines of the cylindrical shell 31 and the negative pressure fan 32 coincide. The exhaust slots 33 penetrate through the inner and outer surfaces of the cylindrical shell 31, and oil and gas leakage can be detected in time.

[0033] Specifically, as Figure 1 andFigure 5 As shown, the negative pressure fan 32 starts and sucks the air near the adsorption tower 2 into the cylindrical shell 31, and then discharges it through the exhaust slot 33. The gas sensor 34 in the cylindrical shell 31 can detect the components of the incoming gas. When it is found that the oil and gas components exceed the standard, it can be fed back to the management background through the sensor interface 35 for the convenience of operation and maintenance personnel to check.

[0034] Working principle: When the utility model is in use, first, after the oil and gas are condensed and cooled in the condensation section, they enter the intake main pipe 5. The two adsorption towers 2 work alternately. For the working adsorption tower 2, its corresponding first intake valve 3 and second intake valve 6 are opened synchronously. The oil and gas enter the adsorption tower 2 along the intake branch pipe 4 and spread upward from bottom to top. The four packing bearing plates 12 in the adsorption tower 2 correspond to the four adsorption packings 13, and four packings with different adsorption efficiencies can be placed according to different positions. There are intervals between the four adsorption packings 13, and the oil and gas concentration sensor 14 is installed therein to observe the adsorption efficiency of the packings at different levels. The multi-level packings form a multi-stage adsorption effect. When replacing the packings in the later stage, the sealing cover 16 can be removed to clean and replace the adsorption packing 13 on the top of the packing bearing plate 12. As the oil and gas enter the adsorption tower 2, the air in the adsorption tower 2 is squeezed out and discharged outward through the exhaust branch pipe 10 and the exhaust riser 9. During intake, the temperature sensor 30 continuously monitors the intake temperature. When the temperature is abnormal, it indicates a malfunction in the condensation section. The three-color alarm light 28 flashes, and at the same time, the buzzer 29 sounds to remind the staff to repair in time. The PLC logic controller 27 provides program support for the operation of the components. After the adsorbed oil and gas remove the excess components, they are sucked by the gas-liquid two-phase pump 21 and sent into the spray tower 23. The oil liquid in the storage tank is pumped out and sprayed downward through the oil liquid spray port 24 to blend with the gas rich in oil and gas, so that the oil liquid and the oil and gas are fully mixed. The mixed oil liquid is pumped out from the oil liquid extraction port 25 and sent back to the storage tank for storage. During the adsorption process, the negative pressure fan 32 starts and sucks the air near the adsorption tower 2 into the cylindrical shell 31, and then discharges it through the exhaust slot 33. The gas sensor 34 in the cylindrical shell 31 can detect the components of the incoming gas. When it is found that the oil and gas components exceed the standard, it can be fed back to the management background through the sensor interface 35 for the convenience of operation and maintenance personnel to check.

[0035] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A multi-stage adsorption wharf oil and gas recovery device, comprising a bottom support frame (1), characterized in that: The left sides of the front and rear ends of the top of the bottom support frame (1) are respectively fixedly connected with an adsorption tower (2); a first air intake valve (3) is installed on the left side of the bottom of the adsorption tower (2); an air intake main pipe (5) is fixedly connected at the middle position of the left side of the top of the bottom support frame (1); a second air intake valve (6) is installed at the front and rear ends of the air intake main pipe (5); an air intake branch pipe (4) is fixedly connected between the first air intake valve (3) and the second air intake valve (6); an exhaust main pipe (7) is arranged above the air intake main pipe (5); a first exhaust valve (8) is installed at the front and rear ends of the exhaust main pipe (7); an exhaust vertical pipe (9) is vertically fixedly connected at the middle position of the top of the exhaust main pipe (7); a second exhaust valve (11) is installed at the middle position of the top of the adsorption tower (2); an exhaust branch pipe (4) is fixedly connected between the first exhaust valve (8) and the second exhaust valve (11). A branch pipe (10), a spray tower (23) is installed on the right side of the top of the bottom support frame (1), an oil spray port (24) is arranged at the top of the spray tower (23), an oil extraction port (25) is arranged at the bottom of the right side of the spray tower (23), a gas-liquid two-phase pump (21) is arranged on the left side of the spray tower (23), an air supply pipe (22) is fixedly connected between the right side of the gas-liquid two-phase pump (21) and the left side of the spray tower (23), a collecting pipe (19) is arranged on the left side of the gas-liquid two-phase pump (21), and a second air outlet valve (20) is respectively installed at the front and rear ends of the collecting pipe (19), a first air outlet valve (17) is installed on the right side of the bottom end of the adsorption tower (2), an air outlet pipe (18) is fixedly connected between the first air outlet valve (17) and the second air outlet valve (20), and a layered adsorption component capable of multi-stage adsorption is arranged inside the adsorption tower (2); The layered adsorption assembly comprises four groups of filler bearing plates (12), the four groups of filler bearing plates (12) are respectively fixedly connected to the inside of the adsorption tower (2), the top of the filler bearing plates (12) are filled with adsorption fillers (13), four groups of oil and gas concentration sensors (14) are installed on the left side of the adsorption tower (2), four groups of inspection ports (15) are welded on the right side of the adsorption tower (2), and a sealing cover (16) is fixedly connected to the right side of the inspection port (15).

2. The multi-stage adsorption terminal oil and gas recovery device according to claim 1, characterized in that: The outer diameter of the filler supporting plate (12) is consistent with the inner diameter of the adsorption tower (2), and the outer wall of the filler supporting plate (12) is tightly fitted with the inner wall of the adsorption tower (2).

3. The multi-stage adsorption wharf oil and gas recovery device according to claim 1 is characterized by: The bottom end of the oil and gas concentration sensor (14) is higher than the top end of the adsorption filler (13) on its right side, and the right side of the oil and gas concentration sensor (14) penetrates the left side of the adsorption tower (2) and extends into the interior.

4. The multi-stage adsorption wharf oil and gas recovery device according to claim 1, characterized in that: The positions of the filler bearing plate (12) and the inspection opening (15) correspond to each other, and the bottom end of the inspection opening (15) is higher than the top end of the filler bearing plate (12) on its left side.

5. The multi-stage adsorption wharf oil and gas recovery device according to claim 1 is characterized by: The top end of the air intake main pipe (5) is fixedly connected to a support bracket (26), a PLC logic controller (27) is installed on the left side of the top end of the support bracket (26), a buzzer (29) is fixedly connected to the right side of the PLC logic controller (27), a three-color warning light (28) is installed on the top end of the buzzer (29), and a temperature sensor (30) is fixedly connected to the bottom end of the PLC logic controller (27).

6. The multi-stage adsorption wharf oil and gas recovery device according to claim 5, characterized in that: The bottom end of the temperature sensor (30) extends into the interior of the air intake main pipe (5), and the PLC logic controller (27), the three-color warning light (28), the buzzer (29), and the temperature sensor (30) are electrically connected.

7. The multi-stage adsorption wharf oil and gas recovery device according to claim 1, characterized in that: A cylindrical shell (31) is fixedly connected to the middle position of the bottom end of the adsorption tower (2); a negative pressure fan (32) is installed at the bottom end of the cylindrical shell (31); exhaust grooves (33) are respectively provided at the front and rear ends of the cylindrical shell (31); a gas sensor (34) is installed at the top end of the cylindrical shell (31); and a sensor interface (35) is provided on the right side of the gas sensor (34).

8. The multi-stage adsorption wharf oil and gas recovery device according to claim 7, characterized in that: The vertical center lines of the cylindrical shell (31) and the negative pressure fan (32) coincide with each other, and the exhaust groove (33) passes through both the inner and outer surfaces of the cylindrical shell (31).

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