Natural gas purification pretreatment equipment

Abstract

The utility model provides natural gas purification pretreatment equipment which comprises a washing cylinder, a filtering mechanism, a conveying mechanism, a washing mechanism and a condensing mechanism, the washing cylinder comprises a cylinder body and a cylinder bottom, the cylinder body and the cylinder bottom are integrally formed, and washing liquid is arranged in the cylinder bottom; the filtering mechanism is mounted at the top of the barrel and is used for filtering natural gas; the conveying mechanism is located in the washing cylinder, the top end of the conveying mechanism is connected with the filtering mechanism, the bottom end of the conveying mechanism is located in the washing liquid, and the conveying mechanism is used for conveying the filtered natural gas into the washing liquid; the washing mechanism comprises a conveying unit and a spraying unit, the conveying unit is connected with the barrel bottom and communicated with the interior of the barrel bottom, and the spraying unit is of a barrel-shaped structure and is matched with the inner diameter of the barrel body; the condensation mechanism comprises a protection box, a condensation unit is installed in the protection box, one end of the condensation unit communicates with the interior of the barrel, the washed natural gas enters the condensation unit, and moisture in the natural gas is removed through the condensation unit.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas purification, and particularly relates to a natural gas purification pretreatment device. Background Art

[0002] Natural gas refers to a mixture of hydrocarbon and non-hydrocarbon gases naturally occurring in the strata. In petroleum geology, it usually refers to oilfield gas and gas field gas. Its composition is mainly hydrocarbon and contains non-hydrocarbon gases.

[0003] Patent No. CN202323120810.4 discloses a natural gas purification water washing tower, including a water washing cylinder. There is water washing liquid inside the water washing cylinder. The bottom of the side of the water washing cylinder is communicated with an air inlet pipe, and one end of the air inlet pipe extending into the interior of the water washing cylinder reaches inside the water washing liquid. A net plate is fixed inside the water washing cylinder and is located below the liquid level. The bottom of the left side of the water washing cylinder is communicated with a drain pipe, and the top of the drain pipe is communicated with a water pump. The outlet of the water pump is communicated with a conduit, and the front end of the conduit penetrates through the water washing cylinder and extends into its interior.

[0004] In the above disclosed patent, natural gas enters the water washing liquid through the air inlet pipe. The air inlet pipe has only one air outlet port, so that the natural gas entering the water washing liquid cannot contact the water washing liquid quickly and fully, and the water washing efficiency and water washing effect are average. Content of the Utility Model

[0005] The utility model provides a natural gas purification pretreatment device to solve the above technical problems.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] A natural gas purification pretreatment device includes: a water washing cylinder, which includes a cylinder body and a cylinder bottom. The cylinder body and the cylinder bottom are integrally formed. There is water washing liquid inside the cylinder bottom; a filtering mechanism installed at the top of the cylinder body for filtering natural gas; a conveying mechanism located inside the water washing cylinder. The top end of the conveying mechanism is connected to the filtering mechanism, and the bottom end of the conveying mechanism is located inside the water washing liquid. The conveying mechanism is used to convey the filtered natural gas into the water washing liquid; a water washing mechanism including a conveying unit and a spraying unit. The conveying unit is connected to the cylinder bottom and is communicated with the inside of the cylinder bottom. The spraying unit is in a cylindrical structure and is adapted to the inner diameter of the cylinder body; a condensing mechanism including a protective box with a condensing unit installed inside. One end of the condensing unit is communicated with the inside of the cylinder body. The water-washed natural gas enters the condensing unit, and the water in the natural gas is removed through the condensing unit.

[0008] A liquid discharge port is provided at the bottom of the cylinder bottom, and a liquid inlet is provided on one side of the cylinder bottom.

[0009] The filtering mechanism includes a filtering box, an air inlet is provided on the filtering box, and a filter screen, a first activated carbon layer and a second activated carbon layer are sequentially installed in the filtering box from top to bottom.

[0010] The conveying mechanism includes: a first air pipe, one end of the first air pipe passes through the top of the cylinder body and is connected and communicated with the bottom of the filtering box; a plurality of second air pipes, the second air pipes are in a circular structure, and the plurality of second air pipes are distributed in parallel up and down; a plurality of third air pipes, which are equally angularly distributed around the center of the first air pipe, both ends of the third air pipe are respectively connected and communicated with the first air pipe and the third air pipe, air holes are provided on the third air pipe and the second air pipe, and the air holes are arranged in an array on the second air pipe and the third air pipe.

[0011] An anti-foaming plate is installed at the connection between the cylinder body and the cylinder bottom, and thorns are arranged in an array at the bottom of the anti-foaming plate.

[0012] The conveying unit includes: a first water pipe, a liquid outlet is provided at the bottom of the cylinder bottom, one end of the first water pipe is hermetically connected to the liquid outlet; a water pump, the water pump is installed on the top of the cylinder body, and the other end of the first water pipe is connected to the input end of the water pump; a second water pipe, one end of the second water pipe is connected to the output end of the water pump, and the other end of the second water pipe passes through the cylinder body to its interior.

[0013] The spraying unit includes: a connector, the other end of the second water pipe is fixedly connected to the connector; a third water pipe, the third water pipe is in a circular structure; a plurality of fourth water pipes, both ends of the fourth water pipe are respectively connected and communicated with the connector and the third water pipe; a plurality of fifth water pipes, which are equally angularly distributed around the center of the third water pipe, one end of the fifth water pipe is vertically fixedly connected and communicated with the third water pipe; atomizing nozzles, the atomizing nozzles are installed at equal intervals on the third water pipe, the fourth water pipe and the fifth water pipe.

[0014] The condensing unit includes: a condensing pipe, the condensing pipe is located in the protection box, the condensing pipe is in a serpentine structure, one end of it passes through the protection box and the cylinder body and is communicated with the interior of the cylinder body; a water tank, the water tank is installed at the bottom inside the protection box, the other end of the condensing pipe is connected and communicated with the water tank, and a drain port and an exhaust port are provided on the water tank.

[0015] An electric control box is installed outside the cylinder body. A controller is installed inside the electric control box. The water pump is electrically connected to the controller. Solenoid valves are installed at the air inlet, the exhaust port, the liquid inlet, the liquid discharge port and the liquid outlet. The solenoid valves are electrically connected to the controller.

[0016] A natural gas concentration detection sensor is installed inside the cylinder body. Liquid level sensors are installed inside the bottom of the cylinder and inside the water tank. The natural gas concentration detection sensor and the liquid level sensors are respectively electrically connected to the controller.

[0017] Advantages of the present utility model:

[0018] For the natural gas purification and pretreatment equipment of the present utility model, after preliminary filtration, natural gas is directly transported into the washing liquid through the conveying mechanism, and can be fully contacted with the washing liquid. It is washed in cooperation with the spraying unit. The spraying unit is arranged in a cylindrical structure, so that the washing liquid is sprayed more evenly inside the cylinder body, ensuring both the washing efficiency and the washing quality. Description of the drawings

[0019] Figure 1 It is a plan view of the natural gas purification and pretreatment equipment according to an embodiment of the present utility model;

[0020] Figure 2 It is a plan view of the filtering mechanism according to an embodiment of the present utility model;

[0021] Figure 3 It is a structural diagram of the conveying mechanism according to an embodiment of the present utility model;

[0022] Figure 4 It is a structural diagram of the spraying unit according to an embodiment of the present utility model.

[0023] Description of the reference numerals:

[0024] 1 - cylinder body; 2 - bottom of the cylinder; 3 - conveying mechanism; 4 - spraying unit; 5 - protective box; 6 - liquid discharge port; 7 - liquid inlet; 8 - filtering box; 9 - air inlet; 10 - filter screen; 11 - first activated carbon layer; 12 - second activated carbon layer; 13 - first air pipe; 14 - second air pipe; 15 - third air pipe; 16 - air holes; 17 - defoaming plate; 18 - thorns; 19 - first water pipe; 20 - water pump; 21 - second water pipe; 22 - connector; 23 - third water pipe; 24 - fourth water pipe; 25 - fifth water pipe; 26 - atomizing nozzle; 27 - condensing pipe; 28 - water tank; 29 - drain port; 30 - exhaust port; 31 - electric control box; 32 - natural gas concentration detection sensor; 33 - liquid level sensor; 34 - solenoid valve; 35 - liquid outlet. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] As Figure 1 shown, a natural gas purification pretreatment device according to an embodiment of the present utility model may include a water washing cylinder, a filtering mechanism, a conveying mechanism 3, a water washing mechanism, and a condensing mechanism. Among them, the water washing cylinder includes a cylinder body 1 and a cylinder bottom 2, the cylinder body 1 and the cylinder bottom 2 are integrally formed, the inside of the cylinder bottom 2 is provided with water washing liquid, and the cylinder bottom 2 has a hemispherical structure. The filtering mechanism is installed at the top of the cylinder body 1 and is used for filtering natural gas. The conveying mechanism 3 is located inside the water washing cylinder, the top end of the conveying mechanism 3 is connected to the filtering mechanism, the bottom end of the conveying mechanism 3 is located in the water washing liquid, and the conveying mechanism 3 is used for conveying the filtered natural gas into the water washing liquid. The water washing mechanism may include a conveying unit and a spraying unit 4. The conveying unit is connected to the cylinder bottom 2 and is in communication with the inside of the cylinder bottom 2. The spraying unit 4 has a cylindrical structure and is adapted to the inner diameter of the cylinder body 1. The condensing mechanism includes a protective box 5, and a condensing unit is installed inside the protective box 5. One end of the condensing unit is in communication with the inside of the cylinder body 1, and the water-washed natural gas enters the condensing unit, and the moisture in the natural gas is removed through the condensing unit.

[0027] In an embodiment of the present utility model, a liquid discharge port 6 is provided at the bottom of the cylinder bottom 2, and a liquid inlet 7 is provided on one side of the cylinder bottom 2. The water washing liquid is injected into the cylinder bottom 2 through the liquid inlet 7, and the used waste liquid is discharged through the liquid discharge port 6.

[0028] In an embodiment of the present utility model, the filtering mechanism may include a filtering box 8. An air inlet 9 is provided on the filtering box 8. A filter screen 10, a first activated carbon layer 11, and a second activated carbon layer 12 are sequentially installed in the filtering box 8 from top to bottom. Natural gas is conveyed to the filtering box 8 through the air inlet 9 for filtering and purification. As Figure 2 shown, sliding rails are installed on both sides inside the filtering box 8, and the filter screen 10, the first activated carbon layer 11, and the second activated carbon layer 12 are slidably installed inside the filtering box 8. A box door is hermetically installed on the filtering box 8, and the filter screen 10 and the activated carbon layer can be maintained and replaced by opening the box door.

[0029] In an embodiment of the present utility model, as Figure 1 and Figure 3As shown, the conveying mechanism 3 may include a first air pipe 13, a second air pipe 14, and a third air pipe 15. One end of the first air pipe 13 passes through the top of the cylinder body 1 and is connected and communicated with the bottom of the filter box 8; a plurality of the second air pipes 14 are provided, the second air pipes 14 are in an annular structure, and the plurality of the second air pipes 14 are distributed in parallel up and down; a plurality of the third air pipes 15 are provided, and are distributed at equal angles around the center of the first air pipe 13. Both ends of the third air pipe 15 are respectively connected and communicated with the first air pipe 13 and the third air pipe 15. Air holes 16 are formed on the third air pipe 15 and the second air pipe 14, and the air holes 16 are arranged in an array on the second air pipe 14 and the third air pipe 15.

[0030] In an embodiment of the present utility model, the diameter of the second air pipe 14 is adapted to the diameter of the bottom of the cylinder 2. Exemplarily, three second air pipes 14 are provided, and the diameters of the three second air pipes 14 gradually decrease from top to bottom. The second air pipe 14 is arranged close to the inner wall of the cylinder body 1, and the air holes 16 are arranged in an array and are distributed at equal 90-degree intervals on the second air pipe 14 and the third air pipe 15, so that gas can be evenly distributed in the washing liquid, improving the cleaning efficiency.

[0031] In an embodiment of the present utility model, an anti-foaming plate 17 is installed at the connection between the cylinder body 1 and the bottom of the cylinder 2, and thorns 18 are arranged in an array at the bottom of the anti-foaming plate 17 for eliminating the foam in the washing liquid.

[0032] In an embodiment of the present utility model, as Figure 1 shown, the conveying unit may include a first water pipe 19, a water pump 20, and a second water pipe 21. A liquid outlet 35 is provided at the bottom of the bottom of the cylinder 2, and one end of the first water pipe 19 is hermetically connected to the liquid outlet 35; the water pump 20 is installed on the top of the cylinder body 1, and the other end of the first water pipe 19 is connected to the input end of the water pump 20; one end of the second water pipe 21 is connected to the output end of the water pump 20, and the other end of the second water pipe 21 passes through the cylinder body 1 to its interior, and the water pump 20 conveys the washing liquid to the spraying unit 4 for spraying.

[0033] In an embodiment of the present utility model, the spraying unit 4 may include a connector 22, a third water pipe 23, a fourth water pipe 24, a fifth water pipe 25, and an atomizing nozzle 26. The other end of the second water pipe 21 is fixedly connected to the connector 22; the third water pipe 23 is in an annular structure; a plurality of the fourth water pipes 24 are provided, and both ends of the fourth water pipe 24 are respectively connected and communicated with the connector 22 and the third water pipe 23; a plurality of the fifth water pipes 25 are provided, and are distributed at equal angles around the center of the third water pipe 23. One end of the fifth water pipe 25 is vertically and fixedly connected to the third water pipe 23 and is communicated therewith; the atomizing nozzles 26 are installed at equal intervals on the third water pipe 23, the fourth water pipe 24, and the fifth water pipe 25.

[0034] In the embodiment of the present utility model, the spraying unit 4 has a cylindrical structure. Specifically, the overall diameter of the third water pipe 23 is adapted to the inner diameter of the cylinder body 1, and the spraying directions of the atomizing nozzles 26 provided are all directed towards the axis of the center of the cylinder body 1. The combination of the spraying unit 4 and the conveying mechanism 3 ensures the quality of the water washing.

[0035] In an embodiment of the present utility model, the condensing unit may include a condensing pipe 27 and a water tank 28. Among them, the condensing pipe 27 is located inside the protective box 5, and the condensing pipe 27 has a serpentine structure, and one end thereof passes through the protective box 5 and the cylinder body 1 and is connected to the inside of the cylinder body 1; the water tank 28 is installed at the bottom inside the protective box 5, and the other end of the condensing pipe 27 is connected to and communicated with the water tank 28, and a drain port 29 and an exhaust port 30 are provided on the water tank 28.

[0036] In the embodiment of the present utility model, after the natural gas floats up from the water washing liquid, the water pump 20 transports the water washing liquid to the atomizing nozzles 26, and then atomized water vapor is ejected to wash the natural gas floating up from the water washing liquid again. Then the natural gas enters the condensing pipe 27. The condensing pipe 27 reduces the temperature of the water-containing natural gas under a certain pressure by utilizing the temperature difference between the natural gas and the water vapor condensing into a liquid, so that the water vapor and the heavy hydrocarbons therein condense into a liquid. Due to the relative density difference and immiscibility of the liquid hydrocarbons and water, they can be separated by gravity in the condensing pipe 27, thereby realizing the removal of moisture.

[0037] The condensing pipe 27 needs to ensure a sufficiently low temperature. A refrigeration device can be installed in the protective box 5 to reduce the temperature of the condensing pipe 27. The refrigeration device is electrically connected to the controller. The refrigeration device adopts a conventional refrigeration form, such as using a condenser. In addition, the protective box 5 can be in the form of a heat-insulating box, which is set as a double-layer box structure inside and outside, and is filled with heat-insulating materials.

[0038] In an embodiment of the present utility model, an electric control box 31 is installed outside the cylinder body 1. A controller is installed inside the electric control box 31. The water pump 20 is electrically connected to the controller. Electromagnetic valves 34 are installed at the air inlet 9, the exhaust port 30, the liquid inlet 7, the liquid discharge port 6 and the liquid outlet 35. The electromagnetic valves 34 are electrically connected to the controller, and overall control is achieved through the electric control box 31.

[0039] In an embodiment of the present utility model, a natural gas concentration detection sensor 32 is installed inside the cylinder body 1, and liquid level sensors 33 are installed inside the bottom of the cylinder 2 and inside the water tank 28. The natural gas concentration detection sensor 32 and the liquid level sensors 33 are respectively electrically connected to the controller.

[0040] According to the natural gas purification and pretreatment equipment of the embodiment of the present utility model, after preliminary filtration, the natural gas is directly transported into the internal of the washing liquid through the conveying mechanism 3, and can be fully contacted with the washing liquid. It is rinsed in cooperation with the spraying unit 4. The spraying unit 4 is arranged in a cylindrical structure, so that the washing liquid is sprayed more evenly in the cylinder body 1, ensuring the washing efficiency and the washing quality at the same time.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0042] The above-described embodiments only represent several implementation manners of the present utility model, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, various modifications and improvements can be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.

Claims

1. A natural gas purification pretreatment device, characterized in that, Comprising: A water-washing cylinder, the water-washing cylinder includes a cylinder body and a cylinder bottom, the cylinder body and the cylinder bottom are integrally formed, and a water-washing liquid is provided inside the cylinder bottom; A filtering mechanism, the filtering mechanism is installed at the top of the cylinder body, and the filtering mechanism is used for filtering natural gas; A conveying mechanism, the conveying mechanism is located inside the water-washing cylinder, the top end of the conveying mechanism is connected to the filtering mechanism, the bottom end of the conveying mechanism is located in the water-washing liquid, and the conveying mechanism is used for conveying the filtered natural gas into the water-washing liquid; A water-washing mechanism, the water-washing mechanism includes a conveying unit and a spraying unit, the conveying unit is connected to the cylinder bottom and is in communication with the inside of the cylinder bottom, the spraying unit is in a cylindrical structure and is adapted to the inner diameter of the cylinder body; A condensation mechanism, the condensation mechanism includes a protection box, a condensation unit is installed inside the protection box, one end of the condensation unit is in communication with the inside of the cylinder body, and the water-washed natural gas enters the condensation unit, and the moisture in the natural gas is removed through the condensation unit.

2. The natural gas purification pretreatment equipment according to claim 1, wherein A liquid discharge port is provided at the bottom of the cylinder bottom, and a liquid inlet is provided on one side of the cylinder bottom.

3. The natural gas purification pretreatment equipment according to claim 2, characterized in that The filtering mechanism includes a filtering box, an air inlet is provided on the filtering box, and a filter screen, a first activated carbon layer and a second activated carbon layer are sequentially installed in the filtering box from top to bottom.

4. The natural gas purification pretreatment equipment according to claim 3, characterized in that The conveying mechanism includes: A first air pipe, one end of the first air pipe passes through the top of the cylinder body and is connected to and in communication with the bottom of the filtering box; A plurality of second air pipes, the second air pipes are in an annular structure, and the plurality of second air pipes are distributed in parallel up and down; A plurality of third air pipes, which are equally angularly distributed around the center of the first air pipe, both ends of the third air pipe are respectively connected to and in communication with the first air pipe and the third air pipe, and air holes are provided on the third air pipe and the second air pipe, and the air holes are arranged in an array on the second air pipe and the third air pipe.

5. The natural gas purification pretreatment equipment according to claim 4, characterized in that, An anti-foaming plate is installed at the connection between the cylinder body and the cylinder bottom, and thorns are arranged in an array at the bottom of the anti-foaming plate.

6. The natural gas purification pretreatment equipment according to claim 5, characterized in that, The conveying unit includes: A first water pipe, a liquid outlet is provided at the bottom of the cylinder bottom, and one end of the first water pipe is hermetically connected to the liquid outlet; A water pump, the water pump is installed at the top of the cylinder body, and the other end of the first water pipe is connected to the input end of the water pump; A second water pipe, one end of the second water pipe is connected to the output end of the water pump, and the other end of the second water pipe passes through the cylinder body to its inside.

7. The natural gas purification pretreatment equipment according to claim 6, characterized in that, The spraying unit includes: A connector, the other end of the second water pipe is fixedly connected to the connector; A third water pipe, the third water pipe is in an annular structure; A plurality of fourth water pipes, both ends of the fourth water pipe are respectively connected to and in communication with the connector and the third water pipe; A plurality of fifth water pipes, which are equally angularly distributed around the center of the third water pipe, and one end of the fifth water pipe is vertically fixedly connected to and in communication with the third water pipe; Atomizing nozzles, the atomizing nozzles are installed at equal intervals on the third water pipe, the fourth water pipe and the fifth water pipe.

8. The natural gas purification pretreatment equipment according to claim 7, characterized in that, The condensation unit includes: A condenser tube, the condenser tube is located inside the protective box, the condenser tube is in a serpentine structure, and one end thereof passes through the protective box and the cylinder body and is connected to the inside of the cylinder body in communication; A water tank, the water tank is installed at the bottom inside the protective box, the other end of the condenser tube is connected to and in communication with the water tank, and the water tank is provided with a drain port and an exhaust port.

9. The natural gas purification pretreatment equipment according to claim 8, characterized in that, An electric control box is installed outside the cylinder body, a controller is installed inside the electric control box, the water pump is electrically connected to the controller, electromagnetic valves are installed at the air inlet, the exhaust port, the liquid inlet, the liquid drain port and the liquid outlet, and the electromagnetic valves are electrically connected to the controller.

10. The natural gas purification and pretreatment equipment according to claim 9, characterized in that, A natural gas concentration detection sensor is installed inside the cylinder body, and liquid level sensors are installed inside the cylinder bottom and inside the water tank, and the natural gas concentration detection sensor and the liquid level sensors are respectively electrically connected to the controller.

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