Pure oxygen production device based on adsorption method

Abstract

The utility model discloses a pure oxygen production device based on an adsorption method, and belongs to the technical field of oxygen production. A pure oxygen production device based on an adsorption method comprises an air compressor, a filtering tank, freeze drying equipment, a dust and oil remover, an air storage tank and an adsorption tower which are sequentially arranged, and adjacent structures of the air compressor, the filtering tank, the freeze drying equipment, the dust and oil remover and the air storage tank are communicated through guide pipes; according to the utility model, the air pretreatment system consisting of the filtering tank, the freeze drying equipment, the dust and oil removal device and the like is arranged, so that impurities such as dust, moisture and oil mist in the air are effectively removed, the adsorption effect of an adsorbent in the adsorption tower and the oxygen production purity are guaranteed, and meanwhile, the working mode of alternate adsorption and regeneration of the two towers is adopted; the continuous and stable production of oxygen is ensured, the production efficiency is improved and the energy consumption is reduced through intelligent management, and the optimization of the oxygen production process is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen production, in particular to a pure oxygen production device based on an adsorption method. Background Art

[0002] As an important industrial gas, oxygen is widely used in the fields of medicine, chemical industry, metallurgy, etc. With the continuous advancement of science and technology, the requirements for oxygen purity and production efficiency are also increasing. Traditional oxygen production methods mostly use adsorption methods. The basic principle is to separate nitrogen from oxygen in the air through the selective adsorption of adsorbents to obtain high-purity oxygen.

[0003] Through research and analysis, it was found that in the existing adsorption oxygen production process, the air raw materials often contain a lot of impurity particles such as dust and oil mist. If these impurity particles enter the adsorption tower directly without effective filtration, it will affect the adsorption effect of the adsorbent and reduce the purity of oxygen. Secondly, a large amount of these ineffectively filtered air raw materials enter the adsorption tower, which may also cause damage to the equipment in the adsorption tower and shorten its service life. Therefore, in the adsorption oxygen production process, the pretreatment of the air raw materials is particularly important. Therefore, it is necessary to improve the shortcomings and defects of the existing technology. Utility Model Content

[0004] The purpose of the present invention is to provide a pure oxygen production device based on adsorption method to solve the problems raised in the background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pure oxygen production device based on an adsorption method comprises: an air compressor, a filter tank, a freeze drying device, a dust remover and oil remover, an air storage tank, and an adsorption tower which are arranged in sequence. The adjacent structures of the air compressor, the filter tank, the freeze drying device, the dust remover and oil remover, and the air storage tank are connected through a conduit, and a corresponding solenoid valve is installed on the conduit. A polyester synthetic fiber PET, a fine fiber, and an activated carbon adsorption layer are installed in sequence from bottom to top in the filter tank. The freeze drying device is provided with a horizontal tank, and a refrigeration device and a vacuum pumping device are fixedly installed in sequence in the horizontal tank. The dust remover and oil remover are provided with a box body, and an electrostatic dust removal unit and an oil mist adsorption unit are separated in sequence in the box body.

[0007] Furthermore, two adsorption towers are arranged at intervals, the tops of the two adsorption towers are connected by an upper through pipe, the middle part of the upper through pipe is fixedly connected to an external oxygen storage tank through an external pipe 1, an oxygen concentration sensor is fixedly connected to the external pipe 1, and the bottoms of the two adsorption towers are connected by a lower through pipe, and the middle part of the lower through pipe is fixedly connected to an external exhaust gas storage tank through an external pipe 2.

[0008] Furthermore, a PLC control cabinet is fixedly installed between the two adsorption towers, and the PLC control cabinet is electrically connected to the air compressor, the filter tank, the freeze drying equipment, the dust and oil remover, the air storage tank, and related electrical equipment on the adsorption tower.

[0009] Furthermore, pressure gauges are installed on the outsides of the filter tank, air storage tank and adsorption tower.

[0010] Furthermore, the outer sides of the polyester synthetic fiber PET, fine fibers, and activated carbon adsorption layer are all covered with an outer frame, a galvanized metal part is fixed to the lower side of the outer frame, and the galvanized metal part is fixedly connected to the inner wall of the filter tank, and a reinforcing grid is distributed between the fine fibers and the outer frame to support the fine fibers and prevent them from deformation or damage during the filtration process.

[0011] Furthermore, the vacuum extraction device includes a vacuum pump, which is installed and fixed on the upper side of the horizontal tank. The output end of the vacuum pump is connected to the horizontal tank through an exhaust pipe, and a drain pipe is fixedly connected to the lower side of the horizontal tank.

[0012] Furthermore, the oil mist adsorption unit is made of high molecular polymer.

[0013] Compared with the prior art, the utility model provides a pure oxygen production device based on the adsorption method, which has the following beneficial effects:

[0014] In the utility model, by setting up an air pretreatment system composed of a filter tank, a freeze drying device, a dust remover and an oil remover, etc., impurities such as dust, moisture and oil mist in the air are effectively removed, and the adsorption effect of the adsorbent in the adsorption tower and the purity of oxygen production are guaranteed. At the same time, the double-tower alternating adsorption and regeneration working mode is adopted, which not only ensures the continuous and stable production of oxygen, but also improves the production efficiency and reduces the energy consumption through intelligent management, thereby realizing the optimization of the oxygen production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front structural schematic diagram of a pure oxygen production device based on an adsorption method proposed by the utility model;

[0016] Figure 2 This is a side view structural schematic diagram of a pure oxygen production device based on an adsorption method proposed by the utility model;

[0017] Figure 3 This is a schematic cross-sectional structure diagram of a freeze-drying device for producing pure oxygen based on an adsorption method proposed in the utility model;

[0018] Figure 4This is a schematic cross-sectional view of a dust and oil remover for a pure oxygen production device based on an adsorption method proposed by the utility model;

[0019] Figure 5 This is a schematic cross-sectional view of the filter tank of a pure oxygen production device based on an adsorption method proposed by the utility model;

[0020] Figure 6 The utility model proposes a pure oxygen production device based on adsorption method Figure 5 Schematic diagram of the structure of part A.

[0021] In the figure: 1. air compressor; 2. filter tank; 21. polyester synthetic fiber PET; 22. fine fiber; 221. reinforced grid; 23. activated carbon adsorption layer; 24. galvanized metal parts; 25. outer frame; 3. freeze drying equipment; 31. horizontal tank; 32. freezing device; 33. vacuum device; 331. vacuum pump; 332. exhaust pipe; 34. drain pipe; 4. dust and oil remover; 41. box; 42. electrostatic dust removal unit; 43. oil mist adsorption unit; 5. air storage tank; 6. adsorption tower; 61. upper pipe; 62. external pipe one; 63. lower pipe; 64. external pipe two; 7. PLC control cabinet; 8. oxygen concentration sensor; 9. pressure gauge. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] Embodiment 1:

[0025] Reference Figure 1-6A pure oxygen production device based on adsorption method comprises: an air compressor 1, a filter tank 2, a freeze drying device 3, a dust remover and oil remover 4, an air storage tank 5, and an adsorption tower 6 which are arranged in sequence, characterized in that the adjacent structures of the air compressor 1, the filter tank 2, the freeze drying device 3, the dust remover and oil remover 4, and the air storage tank 5 are connected through a conduit, and a corresponding solenoid valve is installed on the conduit; a polyester synthetic fiber PET21, a fine fiber 22, and an activated carbon adsorption layer 23 are installed in sequence from bottom to top in the filter tank 2; a horizontal tank 31 is arranged on the freeze drying device 3, and a refrigeration device 32 and a vacuum device 33 are fixedly installed in the horizontal tank 31 in sequence; a box 41 is arranged on the dust remover and oil remover 4, and an electrostatic dust removal unit 42 and an oil mist adsorption unit 43 are separated in sequence in the box 41.

[0026] like Figure 1 As shown, two adsorption towers 6 are arranged at intervals, the tops of the two adsorption towers 6 are connected by an upper through pipe 61, the middle part of the upper through pipe 61 is fixedly connected to an external oxygen storage tank through an external pipe 1 62, an oxygen concentration sensor 8 is fixedly connected to the external pipe 1 62, the bottoms of the two adsorption towers 6 are connected by a lower through pipe 63, the middle part of the lower through pipe 63 is fixedly connected to an external exhaust gas storage tank through an external pipe 2 64.

[0027] like Figure 2 As shown, a PLC control cabinet 7 is fixedly installed between the two adsorption towers 6, and the PLC control cabinet 7 is electrically connected to the air compressor 1, the filter tank 2, the freeze drying equipment 3, the dust and oil remover 4, the air storage tank 5, and the related electrical equipment on the adsorption tower 6.

[0028] Embodiment 2:

[0029] The difference between this embodiment and embodiment 1 is that:

[0030] like Figure 1 As shown, pressure gauges 9 are installed on the outsides of the filter tank 2 , the air storage tank 5 , and the adsorption tower 6 .

[0031] like Figure 5 , Figure 6 As shown, the outer sides of the polyester synthetic fiber PET21, the fine fibers 22, and the activated carbon adsorption layer 23 are all covered with an outer frame 25, and a galvanized metal part 24 is fixed to the lower side of the outer frame 25. The galvanized metal part 24 is fixedly connected to the inner wall of the filter tank 2, and a reinforcing grid 221 is distributed between the fine fibers 22 and the outer frame 25 to support the fine fibers 22 to prevent them from being deformed or damaged during the filtering process;

[0032] like Figure 3As shown, the vacuum device 33 includes a vacuum pump 331, which is installed and fixed on the upper side of the horizontal tank 31. The output end of the vacuum pump 331 is connected to the horizontal tank 31 through an exhaust pipe 332, and a drain pipe 34 is fixedly connected to the lower side of the horizontal tank 31.

[0033] like Figure 4 As shown, the oil mist adsorption unit 43 is made of high molecular polymer.

[0034] Working principle: With air as raw material, nitrogen and oxygen in the air are separated by pressure swing adsorption technology. In working state, the air is first compressed by air compressor 1, and then enters the bottom of filter tank 2 through conduit. The polyester synthetic fiber PET21 in filter tank 2 can mainly filter out large particles of dust and impurities in the air to prevent subsequent filter layers from being blocked. The filtering principle is mechanical blocking, that is, large particles are intercepted when passing through the filter net; fine fiber 22 further filters out smaller dust particles to improve the cleanliness of the air. The filtering principle is also mechanical blocking, but the pore size of the filter net is smaller and can intercept smaller particles; the activated carbon adsorption layer 23 has a strong adsorption capacity and can remove odors and harmful gases in the air, such as formaldehyde, etc. Its filtering principle is adsorption, that is, the pore structure on the surface of activated carbon can adsorb gas molecules;

[0035] The air filtered by the filter tank 2 enters the freeze drying device 3 through the conduit. The freezing device 32 freezes the water molecules in the air to below their freezing point, so that the water is separated and forms ice crystals. Then, the vacuum pump 331 on the vacuum device 33 is started to reduce the pressure value in the horizontal tank 31 through the exhaust pipe 332, so that the ice crystals sublime into water vapor at a lower temperature. The water vapor is condensed into liquid water through the condenser in the horizontal tank 31 and discharged outward from the drain pipe 34, thereby achieving the effect of removing moisture from the air.

[0036] Next, the air enters the dust and oil remover 4 again through the conduit. The electrostatic dust removal unit 42 inside the box 41 uses the principle of static electricity to charge the dust particles still in the air, and then adsorbs them on the dust collecting plate through the action of the electric field; the polymer involved in the oil mist adsorption unit 43 usually includes ion exchange resins, polyacrylates, polyurethanes, etc. These polymers have specific functional groups that have a good affinity for oil mist and can adsorb oil mist particles by chemical or physical methods;

[0037] After the air is processed by the filter tank 2, the freeze drying equipment 3, and the dust and oil remover 4, dust, moisture, oil mist and other impurities in the air can be removed. The processed air enters the air storage tank 5 with a filter element structure for storage, thereby effectively ensuring the quality of the air entering the adsorption tower 6. There are two adsorption towers 6, which adopt a double tower structure to work alternately. Figure 1 As shown, when the left adsorption tower 6 is adsorbing, the raw air passes through the adsorbent layer in the adsorption tower 6, and the oxygen is collected and flows into the oxygen storage tank through the upper pipe 61 and the external pipe 1 62. At the same time, the oxygen concentration sensor 8 ensures that the output oxygen reaches the required purity; when the left adsorption tower 6 is saturated, the PLC control cabinet 7 automatically switches the valve, the adsorption tower 6 on the right starts to adsorb, and the adsorption tower 6 on the left enters the regeneration stage. During regeneration, the exhaust gas is discharged into the exhaust gas storage tank through the lower pipe 63 and the external pipe 2 64. The PLC control cabinet 7 can accurately control the regeneration process to ensure that the adsorbent is completely regenerated and the adsorption capacity is restored. In this cycle, the double towers alternately adsorb and regenerate, ensuring the continuous and stable production of oxygen. The entire system is intelligently managed, which improves production efficiency and reduces energy consumption.

Claims

1. A pure oxygen production device based on adsorption method, comprising: An air compressor (1), a filter tank (2), a freeze drying device (3), a dust remover and oil remover (4), an air storage tank (5), and an adsorption tower (6) are arranged in sequence, characterized in that the adjacent structures of the air compressor (1), the filter tank (2), the freeze drying device (3), the dust remover and oil remover (4), and the air storage tank (5) are connected through a conduit, and a corresponding solenoid valve is installed on the conduit; a polyester synthetic fiber PET (21), a fine fiber (22), and an activated carbon adsorption layer (23) are installed in sequence from bottom to top in the filter tank (2); a horizontal tank (31) is arranged on the freeze drying device (3), and a refrigeration device (32) and a vacuum device (33) are fixedly installed in sequence in the horizontal tank (31); a box (41) is arranged on the dust remover and oil remover (4), and an electrostatic dust removal unit (42) and an oil mist adsorption unit (43) are separated in sequence in the box (41).

2. A pure oxygen production device based on adsorption method according to claim 1, characterized in that: Two adsorption towers (6) are arranged at intervals, the tops of the two adsorption towers (6) are connected through an upper through pipe (61), the middle of the upper through pipe (61) is fixedly connected to an external oxygen storage tank through an external pipe 1 (62), an oxygen concentration sensor (8) is fixedly connected to the external pipe 1 (62), the bottoms of the two adsorption towers (6) are connected through a lower through pipe (63), the middle of the lower through pipe (63) is fixedly connected to an external exhaust gas storage tank through an external pipe 2 (64).

3. A pure oxygen production device based on adsorption method according to claim 2, characterized in that: A PLC control cabinet (7) is fixedly installed between the two adsorption towers (6), and the PLC control cabinet (7) is electrically connected to the air compressor (1), the filter tank (2), the freeze drying equipment (3), the dust and oil remover (4), the air storage tank (5), and the related electrical equipment on the adsorption tower (6).

4. A pure oxygen production device based on adsorption method according to claim 3, characterized in that: Pressure gauges (9) are installed on the outsides of the filter tank (2), the air storage tank (5) and the adsorption tower (6).

5. The pure oxygen production device based on adsorption method according to claim 1 is characterized in that: The outer sides of the polyester synthetic fiber PET (21), the fine fibers (22), and the activated carbon adsorption layer (23) are all covered with an outer frame (25); a galvanized metal part (24) is fixed to the lower side of the outer frame (25); the galvanized metal part (24) is fixedly connected to the inner wall of the filter tank (2); a reinforcing grid (221) is distributed between the fine fibers (22) and the outer frame (25) for supporting the fine fibers (22) and preventing them from being deformed or damaged during the filtering process.

6. A pure oxygen production device based on adsorption method according to claim 1, characterized in that: The vacuum pump (33) includes a vacuum pump (331), which is fixedly installed on the upper side of the horizontal tank (31). The output end of the vacuum pump (331) is connected to the inside of the horizontal tank (31) through an exhaust pipe (332), and a drainage pipe (34) is fixedly connected to the lower side of the horizontal tank (31).

7. A pure oxygen production device based on adsorption method according to claim 1, characterized in that: The oil mist adsorption unit (43) is made of high molecular polymer.

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