Denitrification and purification equipment for heavy components of natural gas

Abstract

The utility model relates to the technical field of natural gas treatment, in particular to nitrogen removal and purification equipment for heavy components of natural gas, which comprises a nitrogen removal kettle, a feed pipe is communicated with the top end of the nitrogen removal kettle, a discharge pipe is communicated with the bottom end of the nitrogen removal kettle, a limit ring is arranged in the middle of the inside of the nitrogen removal kettle, and the discharge pipe is communicated with the top end of the nitrogen removal kettle. A separation assembly is arranged in the limiting ring and comprises a limiting groove formed in the center of the limiting ring. According to the device, the mounting frame can be quickly fixed, the device is convenient to use, the polymeric membrane on the mounting frame can perform denitrification treatment on natural gas entering the denitrification kettle, the denitrification difficulty can be reduced, the denitrification efficiency can be improved, meanwhile, a user can conveniently take out the polymeric membrane on the mounting frame for replacement or cleaning, and the practicability is high. The selective passing ability of the polymeric membrane can be guaranteed, nitrogen separation is facilitated, the polymeric membrane can be fixed through cooperation of the limiting blocks and the limiting plates, the stability of the polymeric membrane can be guaranteed, and nitrogen separation is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to natural gas processing technical field, concretely is a kind of denitrification purification equipment of natural gas heavy component. BACKGROUND

[0002] Natural gas heavy component, also known as high-boiling component, refers to those components with higher boiling point than key components in multi-component solution rectification. When the nitrogen content in natural gas plant raw gas is relatively high, natural gas is not easy to liquefy and affects the heat value of the product. If nitrogen is not removed, nitrogen will accumulate in the system, leading to continuous increase of BOG amount. The higher the nitrogen content in natural gas, the more difficult it is to liquefy natural gas, and the higher the power consumption of the liquefaction process, greatly increasing the power consumption of the liquefaction process. Therefore, during the natural gas treatment process, it is necessary to carry out denitrification treatment on natural gas.

[0003] The existing denitrification treatment of natural gas usually uses membrane separation technology to separate gas using specific membranes. The principle is that under the action of pressure difference, different gases are separated due to their different diffusion rates when gas passes through the membrane. During denitrification, the membrane surface is easily contaminated during use, leading to reduced membrane performance and affecting the separation effect. In addition, the limited drug resistance, heat resistance and solvent resistance of the membrane also limit the service life and stability of the membrane.

[0004] Therefore, a denitrification purification equipment for natural gas heavy components is proposed. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a denitrification purification equipment for natural gas heavy components.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A denitrification purification equipment for natural gas heavy components, comprising: a denitrification kettle, a feed pipe is communicatively arranged at the top end of the denitrification kettle, a discharge pipe is communicatively arranged at the bottom end of the denitrification kettle, a limiting ring is arranged at the middle position in the denitrification kettle, a separation assembly is arranged in the limiting ring, the separation assembly comprises a limiting groove opened at the center of the limiting ring, an installation frame is inserted into the limiting groove, an installation groove adapted to the installation frame is opened on the side wall of the denitrification kettle, and a high-molecular membrane is arranged at the top end of the installation frame.

[0008] Preferably, a booster pump is further arranged on the feed pipe.

[0009] Preferably, a butt joint block is fixedly installed on both sides of the installation frame, a threaded hole is opened on the middle position of the butt joint block and the inner wall of the installation groove, and a threaded screw rod is spirally rotatably installed in the threaded hole.

[0010] Preferably, a connecting handle is fixedly installed on the side wall of the mounting frame.

[0011] Preferably, a limiting assembly is further arranged on the side wall of the top end of the mounting frame, the limiting assembly comprises a movable hole arranged in the mounting frame, a limiting block is slidably installed in the movable hole, the other end of the limiting block extends to the top end of the high molecular film, and a limiting plate is further arranged at the end of the mounting frame away from the limiting block.

[0012] Preferably, an active slot in communication with the movable hole is arranged on the mounting frame, and a push rod is fixedly connected to the top end of the limiting block extending into the active slot.

[0013] Preferably, a spring is further arranged in the movable hole, and the spring is located between the limiting block and the side wall of the movable hole.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1. By arranging the separation assembly, when the user aligns the mounting frame with the limiting slot on the limiting ring, the user rotates the threaded screw in a clockwise direction, the threaded screw can slide into the threaded hole, the mounting frame can be quickly fixed, the high molecular film can be conveniently used, the high molecular film on the mounting frame can perform denitrification treatment on the natural gas entering the denitrification kettle from the feeding pipe, the denitrification difficulty can be reduced, the denitrification efficiency can be improved, and the denitrified natural gas can be collected from the discharge pipe. Similarly, the user rotates the threaded screw in a counterclockwise direction, the user pulls the connecting handle to take out the mounting frame from the limiting slot, and the high molecular film can be conveniently taken out from the denitrification kettle for treatment.

[0016] 2. By arranging the limiting assembly, when the user pushes the push rod to make the limiting block retract into the movable hole, the limiting block can slide out of the top end of the high molecular film, the user can conveniently take out the high molecular film on the mounting frame for replacement or cleaning, the selectivity of the high molecular film can be ensured, and the separation of nitrogen is facilitated. After cleaning or a new high molecular film is placed in the mounting frame, the limiting plate can fix one end of the high molecular film, the spring can push the limiting block to slide outward, the limiting block can move to the top end of the high molecular film, the limiting block cooperates with the limiting plate to fix the high molecular film, the stability of the high molecular film can be ensured, and the separation of nitrogen is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the denitrification kettle of the present application;

[0019] Figure 3The structure schematic view of the top end of the mounting frame of the utility model;

[0020] Figure 4 For Figure 2 The enlarged view of A in the middle.

[0021] In the figure: 1, denitrogenation kettle; 2, feed pipe; 3, connecting handle; 4, mounting groove; 5, mounting frame; 6, discharge pipe; 7, booster pump; 8, limiting ring; 9, limiting groove; 10, limiting block; 11, threaded screw rod; 12, butt block; 13, threaded hole; 14, high molecular film; 15, limiting plate; 16, movable groove; 17, movable hole; 18, spring; 19, push rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] In order to better understand the above technical solutions, the above technical solutions will be described in detail below with reference to the drawings in the description and specific embodiments.

[0024] Embodiment 1:

[0025] Please refer to Figures 1 to 3 The utility model provides a technical scheme: in order to realize the above purpose, the utility model provides the following technical scheme: a purification equipment, it includes: denitrogenation kettle 1, the top end of denitrogenation kettle 1 is connected with the feed pipe 2, the bottom end of denitrogenation kettle 1 is connected with the discharge pipe 6, the middle position in denitrogenation kettle 1 is provided with the limiting ring 8, the limiting ring 8 is provided with the separation assembly, the separation assembly includes the limiting groove 9 that is opened in the center of limiting ring 8, the mounting frame 5 is inserted in the limiting groove 9, the sidewall of denitrogenation kettle 1 is provided with the mounting groove 4 that is adapted with mounting frame 5, the top end of mounting frame 5 is provided with high molecular film 14.

[0026] Please refer to Figure 2 The booster pump 7 is further provided on the feed pipe 2.

[0027] Please refer to Figure 3 The butt block 12 is fixedly installed on the both sides of mounting frame 5, the threaded hole 13 is opened on the middle position of butt block 12 and the inner wall of mounting groove 4, and the threaded screw rod 11 is spirally rotatably installed in the threaded hole 13.

[0028] Please refer to Figure 3 The connecting handle 3 is fixedly installed on the sidewall of mounting frame 5.

[0029] In this embodiment, when the user aligns the mounting frame 5 with the limiting groove 9 on the limiting ring 8, the user rotates the threaded screw rod 11 clockwise, and the threaded screw rod 11 can slide into the threaded hole 13 to quickly fix the mounting frame 5, facilitate the use of the high polymer film 14, and the high polymer film 14 on the mounting frame 5 can denitrogenate the natural gas entering the denitrogenation kettle 1 from the feed pipe 2, reduce the difficulty of denitrogenation, improve the denitrogenation efficiency, and the denitrogenated natural gas can be collected from the discharge pipe 6. Similarly, the user rotates the threaded screw rod 11 counterclockwise, and the user pulls the connecting handle 3 to take out the mounting frame 5 from the limiting groove 9, which can facilitate the removal of the high polymer film 14 from the denitrogenation kettle 1 for processing.

[0030] Embodiment 2:

[0031] Please refer to Figures 1 to 4 The utility model provides a technical scheme: a natural gas heavy component denitrogenation and purification equipment, it still includes: the limiting assembly that sets up on the top end side wall of mounting frame 5, limiting assembly includes the movable hole 17 that sets up in mounting frame 5, the movable hole 17 inside sliding installation is limited block 10, and the other end of limiting block 10 extends to the top end of high polymer film 14, and the one end of mounting frame 5 away from limiting block 10 still is provided with limiting plate 15.

[0032] Please refer to Figure 4 The mounting frame 5 is provided with an active slot 16 in communication with the active hole 17, and the top end of the limiting block 10 extends into the active slot 16 and is fixedly connected with a push rod 19.

[0033] Please refer to Figure 4 The movable hole 17 is also provided with a spring 18 between the limiting block 10 and the side wall of the movable hole 17.

[0034] In this embodiment, when the user pulls the push rod 19 to make the limiting block 10 shrink into the movable hole 17, the limiting block 10 can slide out of the top end of the high polymer film 14, which can facilitate the user to take out the high polymer film 14 on the mounting frame 5 for replacement or cleaning, can guarantee the selection of the high polymer film 14, and is beneficial to the separation of nitrogen. After cleaning or putting a new high polymer film 14 into the mounting frame 5, the limiting plate 15 can fix one end of the high polymer film 14, and the spring 18 can push the limiting block 10 to slide outward, and the limiting block 10 can move to the top end of the high polymer film 14. At this time, the limiting block 10 cooperates with the limiting plate 15 to fix the high polymer film 14, which can guarantee the stability of the high polymer film 14 and is beneficial to the separation of nitrogen.

[0035] Working principle: first, when the user installs the frame 5 to the limiting groove 9 on the limiting ring 8, the user rotates the threaded rod 11 clockwise, the threaded rod 11 can slide into the threaded hole 13, can quickly fix the installation frame 5, convenient for using the high molecular film 14, then the natural gas is introduced into the denitrogenation kettle 1 through the booster pump 7, the high molecular film 14 on the installation frame 5 can denitrogenation treatment for the natural gas entering the denitrogenation kettle 1 from the feed pipe 2, can reduce the difficulty of denitrogenation, improve the denitrogenation efficiency, and the denitrogenated natural gas can be collected from the discharge pipe 6, similarly, the user rotates the threaded rod 11 counterclockwise, the user pulls the connecting handle 3, the installation frame 5 can be taken out from the limiting groove 9, the high molecular film 14 can be taken out from the denitrogenation kettle 1 for treatment, when using, when the user drives the driving rod 19 to make the limiting block 10 shrink into the movable hole 17, the limiting block 10 can slide out from the top end of the high molecular film 14, the user can take out the high molecular film 14 on the installation frame 5 for replacement or cleaning, can guarantee the selectivity of the high molecular film 14, is favorable for the separation of nitrogen, after cleaning or the new high molecular film 14 is placed in the installation frame 5, the limiting plate 15 can fix one end of the high molecular film 14, and the spring 18 can push the limiting block 10 to slide outward, the limiting block 10 can move to the top end of the high molecular film 14, the limiting block 10 cooperates with the limiting plate 15 and can fix the high molecular film 14, can guarantee the stability of the high molecular film 14, is favorable for the separation of nitrogen.

[0036] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the protection scope of the utility model.

[0037] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A denitrification and purification device for heavy components of natural gas, comprising: A denitrification vessel (1) is characterized in that: a feed pipe (2) is connected to the top of the denitrification vessel (1), a discharge pipe (6) is connected to the bottom of the denitrification vessel (1), a limiting ring (8) is provided in the middle position of the denitrification vessel (1), a separation component is provided in the limiting ring (8), the separation component includes a limiting groove (9) opened at the center of the limiting ring (8), a mounting bracket (5) is inserted in the limiting groove (9), a mounting groove (4) adapted to the mounting bracket (5) is opened on the side wall of the denitrification vessel (1), and a polymer membrane (14) is provided at the top of the mounting bracket (5).

2. The denitrification and purification equipment for heavy components of natural gas according to claim 1, characterized in that: A booster pump (7) is also installed on the feed pipe (2).

3. The denitrification and purification equipment for heavy components of natural gas according to claim 2, characterized in that: Both sides of the mounting bracket (5) are fixedly installed with docking blocks (12). Threaded holes (13) are opened in the middle position of the docking blocks (12) and on the inner wall of the mounting groove (4). A threaded screw (11) is screwed and rotated in the threaded hole (13).

4. The denitrification and purification equipment for heavy components of natural gas according to claim 3, characterized in that: A connecting handle (3) is fixedly installed on the side wall of the mounting bracket (5).

5. The denitrification and purification equipment for heavy components of natural gas according to claim 1, characterized in that: A limiting component is also provided on the side wall at the top of the mounting bracket (5). The limiting component includes an movable hole (17) opened in the mounting bracket (5). A limiting block (10) is slidably installed in the movable hole (17). The other end of the limiting block (10) extends to the top of the polymer film (14). A limiting plate (15) is also provided at the end of the mounting bracket (5) away from the limiting block (10).

6. The denitrification and purification equipment for heavy components of natural gas according to claim 5, characterized in that: The mounting bracket (5) has an active groove (16) that communicates with the active hole (17), and the top of the limiting block (10) extends into the active groove (16) and is fixedly connected to a toggle rod (19).

7. The denitrification and purification equipment for heavy components of natural gas according to claim 6, characterized in that: A spring (18) is also provided inside the movable hole (17), and the spring (18) is located between the limiting block (10) and the side wall of the movable hole (17).

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