Energy-saving and low-consumption nitrogen production equipment

Abstract

The utility model provides energy-saving and low-consumption nitrogen production equipment which comprises an air filter box, an air compression tank, a first adsorption tower, a second adsorption tower, a third adsorption tower and a nitrogen storage tank, the air inlet end of the air filter box is connected with an air inlet pipe, and the air outlet end of the air filter box is connected with the air inlet end of the air compression tank through a first pipeline; the air outlet end of the air compression tank is connected with the bottom air inlet end of the first adsorption tower through a second pipeline, the top air outlet end of the first adsorption tower is connected with the bottom air inlet end of the second adsorption tower through a third pipeline, and the top air outlet end of the second adsorption tower is connected with the bottom air inlet end of the third adsorption tower through a fourth pipeline; the nitrogen preparation device disclosed by the utility model is novel in structural design, can realize rapid nitrogen preparation, and can improve the nitrogen preparation purity and the nitrogen preparation efficiency by arranging the three groups of adsorption towers.

Description

Technical Field

[0001] This application relates to the field of nitrogen production technology, and in particular to an energy-saving and low-consumption nitrogen production device. Background Technology

[0002] Nitrogen is a colorless and odorless gas under normal conditions, and is generally non-toxic. It is also less dense than air. Nitrogen makes up 78.12% of the atmosphere (by volume), making it a major component of air. At standard atmospheric pressure, it becomes a colorless liquid when cooled to -195.8℃, and a snow-like solid when cooled to -209.8℃. Nitrogen is chemically inert and rarely reacts with other substances at room temperature. However, under high-temperature, high-energy conditions, it can undergo chemical changes with certain substances to produce new substances useful to humans. Physical characteristics of nitrogen: inert gas, insoluble in water, and less soluble in oil; dry, non-flammable, non-explosive, non-toxic, non-corrosive, and with good expansion properties; widely available and inexhaustible, making it a widely used gaseous resource in oilfield development. When nitrogen is used in oilfields, its purity is generally ≥95%. Nitrogen is used as a downhole circulation medium, along with traditional water-based and oil-based drilling fluids, for secondary and tertiary oil recovery to improve oil production efficiency.

[0003] Current nitrogen production equipment is complex in structure, occupies a large area, produces nitrogen with low purity, and requires separate heating for subsequent use, which increases the cost of use. Therefore, it is necessary to design an energy-saving and low-consumption nitrogen production equipment. Summary of the Invention

[0004] This application provides an energy-saving and low-consumption nitrogen generator to solve the problems of low nitrogen production efficiency and low purity in existing technologies. It achieves rapid nitrogen production and is equipped with three sets of adsorption towers, which can improve the purity and efficiency of nitrogen production.

[0005] This application provides an energy-saving and low-consumption nitrogen generation device, including an air filter box, an air compression tank, a first adsorption tower, a second adsorption tower, a third adsorption tower, and a nitrogen storage tank;

[0006] The air filter box inlet is connected to the air inlet pipe, and the air filter box outlet is connected to the air compressor tank inlet via the first pipe.

[0007] The air compressor tank outlet is connected to the bottom air inlet of the first adsorption tower via a second pipe.

[0008] The top outlet of the first adsorption tower is connected to the bottom inlet of the second adsorption tower via a third pipe.

[0009] The top outlet of the second adsorption tower is connected to the bottom inlet of the third adsorption tower via a fourth pipe.

[0010] The top outlet of the third adsorption tower is connected to the inlet of the nitrogen storage tank via a fifth pipe.

[0011] Preferably, an impurity filtration assembly is installed inside the air filter box. The impurity filtration assembly includes a mesh frame, a first dust filter, filter cotton, and a second dust filter, which are sequentially installed inside the mesh frame.

[0012] Preferably, a first regulating valve is installed on the first pipeline, a second regulating valve is installed on the second pipeline, a third regulating valve is installed on the third pipeline, and a fourth regulating valve is installed on the fourth pipeline.

[0013] Preferably, a heating assembly is also installed inside the nitrogen storage tank. The heating assembly uses an explosion-proof electric heating tube. The explosion-proof electric heating tube includes an explosion-proof chamber, a transition sleeve, an electric heating tube, and a flange plate. The flange plate is disposed between the transition sleeve and the electric heating tube. One end of the transition sleeve is fixed to the flange plate, and the other end of the transition sleeve is fixed to one end of the explosion-proof chamber. The electric heating tube is fixed to the flange plate and arranged in a one-to-one correspondence with the transition sleeve.

[0014] Preferably, the electric heating tube is U-shaped, and the U-shaped electric heating tube is divided into a long tube and a short tube, and the long tube and the short tube are arranged alternately.

[0015] Beneficial effects:

[0016] (1) The present invention has a novel structural design and can achieve rapid nitrogen production. It is equipped with three adsorption towers, which can improve the purity of nitrogen preparation and improve the efficiency of nitrogen preparation.

[0017] (2) In this utility model, the impurity filtration component installed in the air filter box can quickly filter large and small particulate impurities in the air, which can further improve the purity of subsequent nitrogen extraction.

[0018] (3) In this utility model, a heating component is installed in the nitrogen storage tank, which heats up quickly and has a good heating effect. The use of U-shaped tubes with alternating long and short lengths can increase the heating contact area and improve the heating efficiency. It can heat the output nitrogen according to the subsequent use needs and reduce the use cost.

[0019] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the impurity filtration component of this utility model;

[0023] Figure 3 This is a schematic diagram of the heating component structure of this utility model;

[0024] Explanation of reference numerals in the attached drawings: 1. Air filter box; 2. Air compressor tank; 3. First adsorption tower; 4. Second adsorption tower; 5. Third adsorption tower; 6. Nitrogen storage tank; 7. Air inlet pipe; 8. First pipe; 9. Second pipe; 10. Third pipe; 11. Fourth pipe; 12. Fifth pipe; 13. Impurity filter assembly; 14. Mesh frame; 15. First dust filter; 16. Filter cotton; 17. Second dust filter; 18. First regulating valve; 19. Second regulating valve; 20. Third regulating valve; 21. Fourth regulating valve; 22. Fifth regulating valve; 23. Heating assembly; 24. Explosion-proof electric heating tube; 25. Explosion-proof chamber; 26. Transition sleeve; 27. Electric heating tube; 28. Flange tube plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0027] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] Furthermore, the descriptions of directions such as the X direction, Y direction, and Z direction used to explain the operation and construction of the components in this embodiment are not absolute but relative. Although these directions are appropriate when the components are in the positions shown in the figure, they should be interpreted differently when these positions change.

[0030] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0031] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0033] Please see Figure 1-Figure 3 This application discloses an energy-saving and low-consumption nitrogen generation device, including an air filter box 1, an air compression tank 2, a first adsorption tower 3, a second adsorption tower 4, a third adsorption tower 5, and a nitrogen storage tank 6.

[0034] The air inlet of the air filter box 1 is connected to the air inlet pipe 7, and the air outlet of the air filter box 1 is connected to the air inlet of the air compressor tank 2 through the first pipe 8.

[0035] The air outlet of the air compressor tank 2 is connected to the bottom air inlet of the first adsorption tower 3 via a second pipe 9.

[0036] The top outlet of the first adsorption tower 3 is connected to the bottom inlet of the second adsorption tower 4 via a third pipe 10.

[0037] The top outlet of the second adsorption tower 4 is connected to the bottom inlet of the third adsorption tower 5 via a fourth pipe 11.

[0038] The top outlet of the third adsorption tower 5 is connected to the inlet of the nitrogen storage tank 6 via a fifth pipe 12.

[0039] In this invention, an impurity filtering assembly 13 is installed inside the air filter box 1. The impurity filtering assembly 13 includes a mesh frame 14, a first dust filter 15, filter cotton 16, and a second dust filter 17, which are sequentially installed within the mesh frame 14. In this invention, the impurity filtering assembly installed inside the air filter box can quickly filter large and small particulate impurities in the air, further improving the purity of subsequent nitrogen extraction.

[0040] In this utility model, a first regulating valve 18 is installed on the first pipe 8, a second regulating valve 19 is installed on the second pipe 9, a third regulating valve 20 is installed on the third pipe 10, a fourth regulating valve 21 is installed on the fourth pipe 11, and a fifth regulating valve 22 is installed on the fifth pipe 12.

[0041] In addition, in this utility model, a heating component 23 is also installed inside the nitrogen storage tank 6. The heating component 23 adopts an explosion-proof electric heating tube 24. The explosion-proof electric heating tube 24 includes an explosion-proof chamber 25, a transition sleeve 26, an electric heating tube 27, and a flange plate 28. The flange plate 28 is disposed between the transition sleeve 26 and the electric heating tube 27. One end of the transition sleeve 26 is fixed on the flange plate 28, and the other end of the transition sleeve 26 is fixed on one end of the explosion-proof chamber 25. The electric heating tube 27 is fixed on the flange plate 28 and is arranged in a one-to-one correspondence with the transition sleeve 26. The electric heating tube 27 is U-shaped, and the U-shaped electric heating tube is divided into a long tube and a short tube, and the long tube and the short tube are arranged alternately. In this invention, a heating component is installed inside the nitrogen storage tank, which heats up quickly and has a good heating effect. The use of U-shaped tubes with alternating long and short lengths increases the heating contact area and improves heating efficiency. The output nitrogen can be heated according to subsequent usage needs, reducing usage costs.

[0042] Working principle: External air enters the air filter box through the air inlet pipe, where it is filtered by the impurity filter component to remove impurities. After filtration, the air enters the air compressor tank for compression. The compressed gas then enters the first adsorption tower to separate oxygen, carbon dioxide, and water. The separated gas then enters the second and third adsorption towers for further adsorption. The remaining gas after adsorption contains high-purity nitrogen, which enters the nitrogen storage tank. If heating of the nitrogen is required for subsequent use, the heating component can be controlled to heat the nitrogen.

[0043] In summary, this utility model has a novel structural design that enables rapid nitrogen production. The three sets of adsorption towers improve the purity and efficiency of nitrogen production.

[0044] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An energy-saving and low-consumption nitrogen generator, characterized in that, It includes an air filter box (1), an air compressor tank (2), a first adsorption tower (3), a second adsorption tower (4), a third adsorption tower (5), and a nitrogen storage tank (6); The air inlet of the air filter box (1) is connected to the air inlet pipe (7), and the air outlet of the air filter box (1) is connected to the air inlet of the air compressor tank (2) through the first pipe (8). The air outlet of the air compressor tank (2) is connected to the bottom air inlet of the first adsorption tower (3) through a second pipe (9); The top outlet of the first adsorption tower (3) is connected to the bottom inlet of the second adsorption tower (4) through a third pipe (10). The top outlet of the second adsorption tower (4) is connected to the bottom inlet of the third adsorption tower (5) via a fourth pipe (11). The top outlet of the third adsorption tower (5) is connected to the inlet of the nitrogen storage tank (6) via a fifth pipe (12). The nitrogen storage tank (6) is also equipped with a heating assembly (23). The heating assembly (23) adopts an explosion-proof electric heating tube (24). The explosion-proof electric heating tube (24) includes an explosion-proof chamber (25), a transition sleeve (26), an electric heating tube (27), and a flange plate (28). The flange plate (28) is arranged between the transition sleeve (26) and the electric heating tube (27). One end of the transition sleeve (26) is fixed on the flange plate (28), and the other end of the transition sleeve (26) is fixed on one end of the explosion-proof chamber (25). The electric heating tube (27) is fixed on the flange plate (28) and arranged in a one-to-one correspondence with the transition sleeve (26). The electric heating tube (27) is U-shaped, and the U-shaped electric heating tube is divided into a long tube and a short tube, and the long tube and the short tube are alternately arranged.

2. The energy-saving and low-consumption nitrogen generator according to claim 1, characterized in that, The air filter box (1) is equipped with an impurity filter assembly (13), which includes a mesh frame (14), a first dust filter (15), a filter cotton (16), and a second dust filter (17). The first dust filter (15), the filter cotton (16), and the second dust filter (17) are installed in sequence inside the mesh frame (14).

3. The energy-saving and low-consumption nitrogen generator according to claim 1, characterized in that, A first regulating valve (18) is installed on the first pipe (8), a second regulating valve (19) is installed on the second pipe (9), a third regulating valve (20) is installed on the third pipe (10), a fourth regulating valve (21) is installed on the fourth pipe (11), and a fifth regulating valve (22) is installed on the fifth pipe (12).

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