A high-purity oxygen four-column purification device

Abstract

The present invention discloses a four-tower purification device for high-purity oxygen in the technical field of oxygen purification, comprising: a reaction tower; a pressurization tower, which is connected to the reaction tower, and the inner cavity of the pressurization tower is in communication with the inner cavity of the reaction tower for increasing the pressure of the reaction tower; a decompression tower, which is respectively connected to the reaction tower and the pressurization tower, the inner cavity of the decompression tower is in communication with the inner cavity of the reaction tower, and the inner cavity of the decompression tower is in communication with the inner cavity of the pressurization tower for decompressing the reaction tower; a discharge tower, which is connected to the reaction tower, and the inner cavity of the discharge tower is in communication with the inner cavity of the reaction tower. The present invention can adjust the pressure in the reaction tower, and purify oxygen by adsorbing different components in the mixture by an adsorbent under different pressure conditions, thereby improving the purity of oxygen.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen purification, and specifically to a four-tower purification device for high-purity oxygen. Background Art

[0002] Oxygen is a simple substance formed by oxygen elements, with the chemical formula O2. Its chemical properties are relatively active, and it can react with most elements. It is not very active at room temperature and does not easily react with many substances. However, it is very active at high temperatures and can directly combine with various elements, which is related to the fact that the electronegativity of oxygen atoms is second only to fluorine.

[0003] The methods for producing oxygen include the potassium permanganate extraction method, the separation of liquid air method, the membrane separation technology, and the adsorption method. Among them, the adsorption method has higher extraction efficiency. Therefore, most of the existing oxygen extraction methods use the adsorption method to produce oxygen. The adsorption method forces dry air through an adsorbent into an adsorber evacuated to a vacuum. The nitrogen molecules in the air are adsorbed by the adsorbent, and oxygen enters the adsorber. When the amount of oxygen in the adsorber reaches a certain level, the oxygen outlet valve can be opened to release oxygen.

[0004] However, in the existing oxygen purification process, only nitrogen in the raw material is adsorbed, and other minor components in the raw material cannot be removed, resulting in relatively low purity of oxygen. Summary of the Invention

[0005] The purpose of the present invention is to provide a four-tower purification device for high-purity oxygen to solve the problem in the above background art that in the existing oxygen purification process, only nitrogen in the raw material is adsorbed, and other minor components in the raw material cannot be removed, resulting in relatively low purity of oxygen.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A four-tower purification device for high-purity oxygen, comprising:

[0007] A reaction tower;

[0008] A pressurization tower, which is connected to the reaction tower, and the inner cavity of the pressurization tower is in communication with the inner cavity of the reaction tower, and is used to increase the pressure of the reaction tower;

[0009] A decompression tower, which is respectively connected to the reaction tower and the pressurization tower, the inner cavity of the decompression tower is in communication with the inner cavity of the reaction tower, and the inner cavity of the decompression tower is in communication with the inner cavity of the pressurization tower, and is used to decompress the reaction tower;

[0010] An outlet tower, which is connected to the reaction tower, and the inner cavity of the outlet tower is in communication with the inner cavity of the reaction tower.

[0011] Preferably, the reaction tower comprises a reaction tower body, a first feed inlet, a first discharge outlet, a first air pump, a pressure boosting interface, a pressure reducing interface and a plurality of adsorbents. The first feed inlet is arranged at the bottom side of the reaction tower body. The first discharge outlet is arranged at the top of the reaction tower body. The first air pump is installed at one end of the first discharge outlet away from the reaction tower body. The pressure boosting interface is arranged at the bottom side of the reaction tower body away from the first feed inlet. The pressure reducing interface is arranged at the top side of the reaction tower body adjacent to the pressure boosting interface. The plurality of adsorbents are evenly installed in the inner cavity of the reaction tower body.

[0012] Preferably, a feeding mechanism is installed at one end of the first feed inlet away from the reaction tower body. The feeding mechanism comprises a first connector, a first thread groove, a first filter screen, a first filter cotton layer and a first activated carbon layer. The first thread groove is arranged at one end of the inner cavity of the first connector away from the first feed inlet. The first filter screen, the first filter cotton layer and the first activated carbon layer are installed in the inner cavity of the first connector. The first filter screen is on the right side of the first thread groove. The first filter cotton layer is on the right side of the first filter screen. The first activated carbon layer is on the right side of the first filter cotton layer.

[0013] Preferably, the pressure boosting tower comprises a pressure boosting tower body, a second air pump and a third air pump. The second air pump is installed at the bottom side wall of the pressure boosting tower body through a pipeline. The second air pump is connected to the pressure boosting interface through a pipeline. The third air pump is installed at the bottom side wall of the pressure boosting tower body through a pipeline. The second air pump and the third air pump are symmetrical to each other.

[0014] Preferably, the pressure reducing tower comprises a pressure reducing tower body and a fourth air pump. The pressure reducing tower body is connected to the third air pump through a pipeline. The fourth air pump is installed at the top of the pressure reducing tower body through a pipeline. The fourth air pump is connected to the pressure reducing interface through a pipeline.

[0015] Preferably, the discharge tower comprises a discharge tower body, a second feed inlet, a baffle, a plurality of filter plates and a second discharge outlet. The second feed inlet is arranged at the top of the discharge tower body. The inner cavity of the second feed inlet is communicated with the inner cavity of the discharge tower body. The baffle is obliquely installed in the inner cavity of the discharge tower body. The plurality of filter plates are evenly installed in the inner cavity of the discharge tower body. One end of the filter plate is connected to the inner cavity side wall of the discharge tower body. The other end of the filter plate is connected to the side wall of the baffle. The second discharge outlet is arranged at the top side wall of the discharge tower body. The inner cavity of the second discharge outlet is communicated with the inner cavity of the discharge tower body.

[0016] Preferably, a discharging mechanism is installed at one end of the second discharging port away from the main body of the discharging tower. The discharging mechanism includes a second connector, a second threaded groove, a second filter screen, a second filter cotton layer, and a second activated carbon layer. The second threaded groove is opened at one end of the inner cavity of the second connector away from the second discharging port. The second filter screen, the second filter cotton layer, and the second activated carbon layer are installed in the inner cavity of the second connector. The second filter screen is on the left side of the second threaded groove, the second filter cotton layer is on the left side of the second filter screen, and the second activated carbon layer is on the left side of the second filter cotton layer.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention can adjust the pressure in the reaction tower, and purify oxygen by adsorbing different components in the mixture by the adsorbent under different pressure conditions, thereby improving the purity of oxygen. The inert gas in the pressure increasing tower is pumped into the inner cavity of the reaction tower by the second air pump to increase the pressure in the reaction tower, so as to change the pressure in the inner cavity of the reaction tower, and purify oxygen by adsorbing different components in the mixture by the adsorbent under different pressure conditions, thereby improving the purity of oxygen. Brief Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a schematic structural diagram of the reaction tower of the present invention;

[0020] Figure 3 is a schematic structural diagram of the feeding mechanism of the present invention;

[0021] Figure 4 is a schematic structural diagram of the pressure increasing tower of the present invention;

[0022] Figure 5 is a schematic structural diagram of the pressure reducing tower of the present invention;

[0023] Figure 6 is a schematic structural diagram of the discharging tower of the present invention;

[0024] Figure 7 is a schematic structural diagram of the discharging mechanism of the present invention.

[0025] In the figure: 100 reaction tower, 110 reaction tower body, 120 first feed inlet, 130 first discharge outlet, 140 first air pump, 150 pressurization interface, 160 decompression interface, 170 adsorbent, 200 feeding mechanism, 210 first connector, 220 first thread groove, 230 first filter screen, 240 first filter cotton layer, 250 first activated carbon layer, 300 pressurization tower, 310 pressurization tower body, 320 second air pump, 330 third air pump, 400 decompression tower, 410 decompression tower body, 420 fourth air pump, 500 discharge tower, 510 discharge tower body, 520 second feed inlet, 530 baffle plate, 540 filter plate, 550 second discharge outlet, 600 discharging mechanism, 610 second connector, 620 second thread groove, 630 second filter screen, 640 second filter cotton layer, 650 second activated carbon layer. Detailed implementation mode

[0026] 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.

[0027] The present invention provides a four-tower purification device for high-purity oxygen, which can adjust the pressure in the reaction tower and purify oxygen by adsorbing different components in the mixture by the adsorbent under different pressure conditions to improve the purity of oxygen. Please refer to Figure 1 , including: reaction tower 100, feeding mechanism 200, pressurization tower 300, decompression tower 400, discharge tower 500 and discharging mechanism 600;

[0028] Please refer to Figure 1-2, the reaction tower 100 includes a reaction tower body 110, a first feed inlet 120, a first discharge outlet 130, a first air pump 140, a pressurization interface 150, a decompression interface 160, and a plurality of adsorbents 170. The first feed inlet 120 is provided at the bottom side of the reaction tower body 110, the first discharge outlet 130 is provided at the top of the reaction tower body 110, the first air pump 140 is installed at one end of the first discharge outlet 130 away from the reaction tower body 110, the pressurization interface 150 is provided at the bottom side of the reaction tower body 110 away from the first feed inlet 120, the decompression interface 160 is provided at the top side of the reaction tower body 110 adjacent to the pressurization interface 150, and the plurality of adsorbents 170 are uniformly installed in the inner cavity of the reaction tower body 110. The first feed inlet 120 and the reaction tower body 110 are integrally processed, the first discharge outlet 130 and the reaction tower body 110 are integrally processed, the pressurization interface 150 and the reaction tower body 110 are integrally processed, and the decompression interface 160 and the reaction tower body 110 are integrally processed;

[0029] Please refer to Figure 1 , Figure 2 and Figure 4 , the pressurization tower 300 is connected to the reaction tower 100, and the inner cavity of the pressurization tower 300 is in communication with the inner cavity of the reaction tower 100 for increasing the pressure of the reaction tower 100. The pressurization tower 300 includes a pressurization tower body 310, a second air pump 320, and a third air pump 330. The second air pump 320 is installed at the bottom side wall of the pressurization tower body 310 through a pipeline, and the second air pump 320 is connected to the pressurization interface 150 through a pipeline. The third air pump 330 is installed at the bottom side wall of the pressurization tower body 310 through a pipeline, and the second air pump 320 and the third air pump 330 are symmetrical to each other. The pressurization tower body 310 is filled with an inert gas. The inert gas in the pressurization tower body 310 is pumped into the inner cavity of the reaction tower body 110 through the second air pump 320 to increase the pressure in the reaction tower body 110, thereby changing the pressure in the inner cavity of the reaction tower body 110. The oxygen is purified by the adsorbent 170 adsorbing different components in the mixture under different pressure conditions, and the purity of the oxygen is improved;

[0030] Please refer to Figure 1 and Figure 3-5, the vacuum tower 400 is respectively connected to the reaction tower 100 and the pressure increasing tower 300. The inner cavity of the vacuum tower 400 communicates with the inner cavity of the reaction tower 100, and the inner cavity of the vacuum tower 400 communicates with the inner cavity of the pressure increasing tower 300, which is used to reduce the pressure of the reaction tower 100. The vacuum tower 400 includes a vacuum tower body 410 and a fourth air pump 420. The vacuum tower body 410 is connected to the third air pump 330 through a pipeline. The fourth air pump 420 is installed at the top of the vacuum tower body 410 through a pipeline. The fourth air pump 420 is connected to the vacuum interface 160 through a pipeline. The gas in the reaction tower body 110 is extracted by the fourth air pump 420 to reduce the air pressure in the reaction tower body 110. After the air pressure decreases, the adsorbent 170 releases the adsorbed components and extracts the released components, which is convenient for the next purification of oxygen. The gas in the vacuum tower body 410 is extracted into the inner cavity of the pressure increasing tower body 310 by the third air pump 330, which is used to supplement the pressure in the pressure increasing tower body 310 and release the pressure in the vacuum tower body 410, so that the vacuum tower body 410 always maintains a low pressure state while the inner cavity of the pressure increasing tower body 310 maintains a high pressure state;

[0031] Please refer to Figure 1 and Figure 6 , the discharge tower 500 is connected to the reaction tower 100. The inner cavity of the discharge tower 500 communicates with the inner cavity of the reaction tower 100. The discharge tower 500 includes a discharge tower body 510, a second feed inlet 520, a baffle 530, a plurality of filter plates 540 and a second discharge outlet 550. The second feed inlet 520 is arranged at the top of the discharge tower body 510. The inner cavity of the second feed inlet 520 communicates with the inner cavity of the discharge tower body 510. The baffle 530 is obliquely installed in the inner cavity of the discharge tower body 510. A plurality of filter plates 540 are evenly installed in the inner cavity of the discharge tower body 510. One end of the filter plate 540 is connected to the inner cavity side wall of the discharge tower body 510, and the other end of the filter plate 540 is connected to the side wall of the baffle 530. The second discharge outlet 550 is arranged at the top of the side wall of the discharge tower body 510. The inner cavity of the second discharge outlet 550 communicates with the inner cavity of the discharge tower body 510. The second feed inlet 520 and the discharge tower body 510 are integrally processed. The second discharge outlet 550 and the discharge tower body 510 are integrally processed. The second feed inlet 520 is connected to the first air pump 140 through a pipeline. The purified oxygen is extracted into the inner cavity of the discharge tower body 510 by the first air pump 140. The oxygen extracted into the inner cavity of the discharge tower body 510 sequentially passes through a plurality of filter plates 540. The oxygen is filtered again by the plurality of filter plates 540 to improve the purity of the oxygen. The filtered oxygen enters the space in the inner cavity of the discharge tower body 510 away from the filter plates 540 through the gap between the baffle 530 and the inner wall of the discharge tower body 510 and is discharged through the second discharge outlet 550.

[0032] Please refer to Figure 1-3, at one end of the first feed inlet 120 away from the reaction tower body 110, a feeding mechanism 200 is installed. The feeding mechanism 200 includes a first connector 210, a first thread groove 220, a first filter screen 230, a first filter cotton layer 240 and a first activated carbon layer 250. The first thread groove 220 is arranged at one end of the inner cavity of the first connector 210 away from the first feed inlet 120. The first filter screen 230, the first filter cotton layer 240 and the first activated carbon layer 250 are installed in the inner cavity of the first connector 210. The first filter screen 230 is on the right side of the first thread groove 220, the first filter cotton layer 240 is on the right side of the first filter screen 230, and the first activated carbon layer 250 is on the right side of the first filter cotton layer 240. The first connector 210 is connected to the raw material bin through the first thread groove 220. The raw material enters the inner cavity of the reaction tower body 110 through the first connector 210. The gas entering the inner cavity of the first connector 210 passes through the first filter screen 230, the first filter cotton layer 240 and the first activated carbon layer 250 in sequence. The raw material is filtered by the first filter screen 230, the first filter cotton layer 240 and the first activated carbon layer 250 to reduce the impurities in the raw material, which is convenient for the reaction tower body 110 to purify the raw material.

[0033] Please refer to Figure 1 , Figure 6 and Figure 7 , at one end of the second discharge outlet 550 away from the discharge tower body 510, a discharging mechanism 600 is installed. The discharging mechanism 600 includes a second connector 610, a second thread groove 620, a second filter screen 630, a second filter cotton layer 640 and a second activated carbon layer 650. The second thread groove 620 is opened at one end of the inner cavity of the second connector 610 away from the second discharge outlet 550. The second filter screen 630, the second filter cotton layer 640 and the second activated carbon layer 650 are installed in the inner cavity of the second connector 610. The second filter screen 630 is on the left side of the second thread groove 620, the second filter cotton layer 640 is on the left side of the second filter screen 630, and the second activated carbon layer 650 is on the left side of the second filter cotton layer 640. The discharge tower body 510 is connected to the storage tank through the second connector 610. The purified oxygen is transported into the storage tank through the second connector 610 for packaging and storage. The oxygen purified by the discharge tower body 510 enters the inner cavity of the second connector 610 and is filtered by the second activated carbon layer 650, the second filter cotton layer 640 and the second filter screen 630 in sequence to further purify the oxygen and produce high-purity oxygen.

[0034] Although the present invention has been described above with reference to the embodiments, various modifications can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed by the present invention can be combined with each other in any way, and the reason for not exhaustively describing the situations of these combinations in this specification is only for the sake of saving space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An oxygen four-tower purification device, characterized in that: Including: A reaction tower (100), the reaction tower (100) includes a reaction tower body (110) and a first feed inlet (120). The first feed inlet (120) is arranged at the bottom side of the reaction tower body (110). One end of the first feed inlet (120) far from the reaction tower body (110) is installed with a feeding mechanism (200). The feeding mechanism (200) includes a first connector (210), a first threaded groove (220), a first filter screen (230), a first filter cotton layer (240) and a first activated carbon layer (250). The first threaded groove (220) is arranged at one end of the inner cavity of the first connector (210) far from the first feed inlet (120). The first filter screen (230), the first filter cotton layer (240) and the first activated carbon layer (250) are installed in the inner cavity of the first connector (210). The first filter screen (230) is on the right side of the first threaded groove (220), the first filter cotton layer (240) is on the right side of the first filter screen (230), and the first activated carbon layer (250) is on the right side of the first filter cotton layer (240); A pressure increasing tower (300), the pressure increasing tower (300) is connected to the reaction tower (100), and the inner cavity of the pressure increasing tower (300) is in communication with the inner cavity of the reaction tower (100) for increasing the pressure of the reaction tower (100); A pressure reducing tower (400), the pressure reducing tower (400) is respectively connected to the reaction tower (100) and the pressure increasing tower (300). The inner cavity of the pressure reducing tower (400) is in communication with the inner cavity of the reaction tower (100), and the inner cavity of the pressure reducing tower (400) is in communication with the inner cavity of the pressure increasing tower (300) for reducing the pressure of the reaction tower (100); A discharging tower (500), the discharging tower (500) is connected to the reaction tower (100), and the inner cavity of the discharging tower (500) is in communication with the inner cavity of the reaction tower (100). The discharging tower (500) includes a discharging tower body (510) and a second discharging port (550). One end of the second discharging port (550) far from the discharging tower body (510) is installed with a discharging mechanism (600). The discharging mechanism (600) includes a second connector (610), a second threaded groove (620), a second filter screen (630), a second filter cotton layer (640) and a second activated carbon layer (650). The second threaded groove (620) is opened at one end of the inner cavity of the second connector (610) far from the second discharging port (550). The second filter screen (630), the second filter cotton layer (640) and the second activated carbon layer (650) are installed in the inner cavity of the second connector (610). The second filter screen (630) is on the left side of the second threaded groove (620), the second filter cotton layer (640) is on the left side of the second filter screen (630), and the second activated carbon layer (650) is on the left side of the second filter cotton layer (640).

2. The oxygen four-column purification device according to claim 1, characterized in that: The reaction tower (100) further includes a first discharge port (130), a first air pump (140), a pressurization interface (150), a decompression interface (160), and a plurality of adsorbents (170). The first discharge port (130) is arranged at the top of the reaction tower body (110). The first air pump (140) is installed at one end of the first discharge port (130) away from the reaction tower body (110). The pressurization interface (150) is arranged at the bottom on one side of the reaction tower body (110) away from the first feed port (120). The decompression interface (160) is arranged at the top on one side of the reaction tower body (110) adjacent to the pressurization interface (150). A plurality of the adsorbents (170) are evenly installed in the inner cavity of the reaction tower body (110).

3. An oxygen four-column purification device according to claim 2, characterized in that: The pressurization tower (300) includes a pressurization tower body (310), a second air pump (320), and a third air pump (330). The second air pump (320) is installed at the bottom of the side wall of the pressurization tower body (310) through a pipeline. The second air pump (320) is connected to the pressurization interface (150) through a pipeline. The third air pump (330) is installed at the bottom of the side wall of the pressurization tower body (310) through a pipeline. The second air pump (320) and the third air pump (330) are symmetrical to each other.

4. The oxygen four-column purification device according to claim 3, wherein: The decompression tower (400) includes a decompression tower body (410) and a fourth air pump (420). The decompression tower body (410) is connected to the third air pump (330) through a pipeline. The fourth air pump (420) is installed at the top of the decompression tower body (410) through a pipeline. The fourth air pump (420) is connected to the decompression interface (160) through a pipeline.

5. A four-tower oxygen purification device according to claim 4, characterized in that: The discharge tower (500) further includes a second feed port (520), a baffle (530), and a plurality of filter plates (540). The second feed port (520) is arranged at the top of the discharge tower body (510). The inner cavity of the second feed port (520) is communicated with the inner cavity of the discharge tower body (510). The baffle (530) is obliquely installed in the inner cavity of the discharge tower body (510). A plurality of the filter plates (540) are evenly installed in the inner cavity of the discharge tower body (510). One end of the filter plate (540) is connected to the inner cavity side wall of the discharge tower body (510), and the other end of the filter plate (540) is connected to the side wall of the baffle (530). The second discharge port (550) is arranged at the top of the side wall of the discharge tower body (510). The inner cavity of the second discharge port (550) is communicated with the inner cavity of the discharge tower body (510).

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