CN212619667U - Equipment for producing high-purity nitrogen and oxygen from air through cryogenic rectification - Google Patents
Equipment for producing high-purity nitrogen and oxygen from air through cryogenic rectification Download PDFInfo
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- CN212619667U CN212619667U CN201921691368.1U CN201921691368U CN212619667U CN 212619667 U CN212619667 U CN 212619667U CN 201921691368 U CN201921691368 U CN 201921691368U CN 212619667 U CN212619667 U CN 212619667U
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Abstract
The utility model discloses an equipment of production high-purity nitrogen and oxygen from the air through cryogenic rectification, including liquid oxygen knockout drum, rose box, air exhauster, liquid oxygen buffer tank, liquid nitrogen knockout drum and liquid nitrogen buffer tank, liquid oxygen knockout drum one side is provided with the rose box. The utility model discloses simple structure, the modern design, liquid oxygen knockout drum and refrigerator through the setting, can be with jar interior air cooling to 182.962 degrees centigrade, oxygen in the air can condense into liquid oxygen this moment, liquid oxygen flows into to the liquid oxygen buffer tank in through the pipeline, the air that does not have the liquefaction is carried to the liquid nitrogen knockout drum in through No. two air blowers and communicating pipe, through the liquid nitrogen knockout drum and the refrigerator of setting No. two, can cool down residual air to 195.8 degrees centigrade, nitrogen gas in the air can condense into the liquid nitrogen this moment, the liquid nitrogen flows into to the liquid nitrogen buffer tank in through the pipeline, so far accessible cryogenic rectification draws and separates nitrogen gas and oxygen in with the air, be fit for being extensively promoted and used.
Description
Technical Field
The utility model relates to a cryogenic rectification equipment, in particular to equipment for producing high-purity nitrogen and oxygen from air through cryogenic rectification.
Background
The cryogenic separation method is also called low-temperature rectification method, invented by professor Linde in 1902. The essence is the gas liquefaction technology. The method is characterized in that air is used as a raw material, and is compressed, purified and liquefied into liquid air by heat exchange, wherein the liquid air is mainly a mixture of liquid oxygen and liquid nitrogen, and the nitrogen and the oxygen are obtained by separating the liquid oxygen and the liquid nitrogen by rectification by utilizing the difference of the boiling points of the liquid oxygen and the liquid nitrogen.
However, the conventional cryogenic rectification equipment has the disadvantages of high compression energy consumption, high preparation cost, low preparation efficiency and high impurity content in oxygen and nitrogen, and therefore, the equipment for producing high-purity nitrogen and oxygen from air through cryogenic rectification is provided.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides an equipment of production high-purity nitrogen and oxygen in follow air through cryogenic rectification, through liquid oxygen knockout drum and the refrigerator that sets up, can be with jar interior air cooling to 182.962 degrees centigrade, oxygen in the air can condense into liquid oxygen this moment, liquid oxygen flows into to the liquid oxygen buffer tank in through the pipeline, the air that does not liquefy is carried to the liquid nitrogen buffer tank in via No. two air blowers and communicating pipe, through the liquid nitrogen buffer tank and the refrigerator that set up, can cool down the residual air to 195.8 degrees centigrade, nitrogen gas in the air can condense into the liquid nitrogen this moment, the liquid nitrogen flows into to the liquid nitrogen buffer tank in through the pipeline, so far accessible cryogenic rectification draws and separates nitrogen gas and oxygen in the air, low energy consumption has, high efficiency advantage, can effectively solve the problem in the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a device for producing high-purity nitrogen and oxygen from air through low-temperature rectification comprises a liquid oxygen separation tank, a filter box, a first air exhauster, a liquid oxygen buffer tank, a liquid nitrogen separation tank and a liquid nitrogen buffer tank, wherein the filter box is arranged on one side of the liquid oxygen separation tank, the first air exhauster is arranged on one side of the filter box, the liquid oxygen buffer tank is arranged on the other side of the liquid oxygen separation tank, the liquid nitrogen separation tank is arranged on the other side of the liquid oxygen buffer tank, the liquid nitrogen buffer tank is arranged on one side of the liquid nitrogen separation tank, the first refrigerating machine is arranged in the liquid oxygen separation tank, the second air exhauster is arranged above the first refrigerating machine, the liquid nitrogen separation tank is communicated and connected through a communicating pipe, the second refrigerating machine is arranged in the liquid nitrogen separation tank, the first air exhauster is provided with an air inlet pipe, and the liquid oxygen separation tank, the filter box, the first air exhauster and the liquid oxygen buffer tank are communicated and connected, the filter box is characterized in that a primary filter screen is arranged on one side inside the filter box, a secondary filter screen is arranged on one side of the primary filter screen, and an activated carbon filter layer is arranged on one side of the secondary filter screen.
Further, a communicating pipe valve is arranged in the communicating pipe.
Further, an oxygen outlet pipe is arranged above the liquid oxygen buffer tank, and an oxygen outlet valve is arranged inside the oxygen outlet pipe.
Furthermore, a nitrogen outlet pipe is arranged above the liquid nitrogen buffer tank, and a nitrogen outlet valve is arranged inside the nitrogen outlet pipe.
Furthermore, the outer sides of the liquid oxygen separation tank and the liquid nitrogen separation tank are both provided with heat preservation cotton.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. through liquid oxygen knockout drum and the refrigerator that sets up, can be with jar interior air cooling to 182.962 degrees centigrade, oxygen in the air can condense into liquid oxygen this moment, liquid oxygen flows into to the liquid oxygen buffer tank in through the pipeline, the air that does not liquefy is carried to the liquid nitrogen knockout drum in through No. two air blowers and communicating pipe, through the liquid nitrogen knockout drum and the refrigerator of No. two that set up, can cool down remaining air to 195.8 degrees centigrade, nitrogen gas in the air can condense into the liquid nitrogen this moment, the liquid nitrogen flows into to the liquid nitrogen buffer tank through the pipeline, accessible cryogenic rectification draws and separates nitrogen gas and oxygen in the air so far, and has low energy consumption, high efficiency advantage.
2. Through a suction fan and the intake pipe that set up, can collect the outside air, the collection efficiency of very big increase air can filter the air through the rose box that sets up, through the primary filter screen that sets up, secondary filter screen and active carbon filter layer, can effectively get rid of the dust impurity and the poisonous and harmful substance in the air, ensures the quality of nitrogen gas and oxygen from the source.
3. Through the intercommunication pipe valve that sets up, go out the nitrogen valve and go out the nitrogen valve, can effectively increase the controllability of device, ensure that the device can normally orderly move, increase the extraction efficiency of nitrogen gas and oxygen, through the heat preservation cotton that sets up, can provide the heat preservation effect in liquid oxygen knockout drum and the liquid nitrogen knockout drum outside, prevent that jar interior air conditioning from running off, ensured refrigerated effect on the one hand, on the other hand has reduced the energy consumption.
Drawings
FIG. 1 is a schematic diagram showing the overall structure of an apparatus for producing high purity nitrogen and oxygen from air by cryogenic rectification according to the present invention.
FIG. 2 is a schematic diagram showing the internal structure of a filtration tank of an apparatus for producing high purity nitrogen and oxygen from air by cryogenic rectification according to the present invention.
In the figure: 1. a liquid oxygen separation tank; 2. a filter box; 3. a first exhaust fan; 4. a liquid oxygen buffer tank; 5. a liquid nitrogen separation tank; 6. a liquid nitrogen buffer tank; 7. an air inlet pipe; 8. a second exhaust fan; 9. a communicating pipe; 10. a communicating tube valve; 11. an oxygen outlet pipe; 12. an oxygen outlet valve; 13. a first refrigerator; 14. a second refrigerator; 15. a nitrogen outlet pipe; 16. a nitrogen outlet valve; 17. heat preservation cotton; 18. a primary filter screen; 19. a secondary filter screen; 20. an active carbon filter layer.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As shown in figure 1-2, a device for producing high-purity nitrogen and oxygen from air by low-temperature rectification comprises a liquid oxygen separation tank 1, a filter box 2, a first exhaust fan 3, a liquid oxygen buffer tank 4, a liquid nitrogen separation tank 5 and a liquid nitrogen buffer tank 6, wherein the filter box 2 is arranged on one side of the liquid oxygen separation tank 1, the first exhaust fan 3 is arranged on one side of the filter box 2, the liquid oxygen buffer tank 4 is arranged on the other side of the liquid oxygen separation tank 1, the liquid nitrogen separation tank 5 is arranged on the other side of the liquid oxygen buffer tank 4, the liquid nitrogen buffer tank 6 is arranged on one side of the liquid nitrogen separation tank 5, a first refrigerating machine 13 is arranged in the liquid oxygen separation tank 1, a second exhaust fan 8 is arranged above the first refrigerating machine 13, the liquid nitrogen separation tank 5 is communicated and connected with the second exhaust fan 8 through a communicating pipe 9, a second refrigerating machine 14 is arranged in the liquid nitrogen separation tank 5, no. 3 one sides of air exhauster are provided with intake pipe 7, liquid oxygen knockout drum 1, rose box 2, No. 3 air exhausters and liquid oxygen buffer tank 4 all communicate with each other through intake pipe 7 and connect, 2 inside one sides of rose box are provided with elementary filter screen 18, elementary filter screen 18 one side is provided with secondary filter screen 19, secondary filter screen 19 one side is provided with activated carbon filter layer 20.
In the embodiment, as shown in fig. 1-2, the air in the tank can be cooled to 182.962 ℃ by the liquid oxygen separation tank 1 and the first refrigerating machine 13, at this time, oxygen in the air can be condensed into liquid oxygen, the liquid oxygen flows into the liquid oxygen buffer tank 4 through the pipeline, the air without liquefaction is conveyed into the liquid nitrogen separation tank 5 through the second exhaust fan 8 and the communicating pipe 9, the remaining air can be cooled to 195.8 ℃ by the liquid nitrogen separation tank 5 and the second refrigerating machine 14, at this time, nitrogen in the air can be condensed into liquid nitrogen, the liquid nitrogen flows into the liquid nitrogen buffer tank 6 through the pipeline, so far, nitrogen and oxygen in the air can be extracted and separated by cryogenic rectification, and the liquid nitrogen separation tank has the advantages of low energy consumption and high efficiency, and the external air can be collected by the first exhaust fan 3 and the air inlet pipe 7, so that the collection efficiency of the air is greatly increased, through the rose box 2 that sets up, can filter the air, through the elementary filter screen 18 that sets up, secondary filter screen 19 and active carbon filter layer 20, dust impurity and poisonous harmful substance in can effectively getting rid of the air, guarantee the quality of nitrogen gas and oxygen from the source, through the heat preservation cotton 17 that sets up, can provide the heat preservation effect in liquid oxygen knockout drum 1 and the 5 outsides of liquid nitrogen knockout drum, prevent that jar interior air conditioning from running off, guaranteed refrigerated effect on the one hand, on the other hand has reduced the energy consumption.
Wherein, a communicating pipe valve 10 is arranged inside the communicating pipe 9.
In this embodiment, as shown in fig. 1, the device can be ensured to operate normally and orderly, and the extraction efficiency of nitrogen and oxygen is increased.
Wherein, the liquid oxygen buffer tank 4 top is provided with out oxygen pipe 11, it is provided with out oxygen valve 12 to go out oxygen pipe 11 inside.
In this embodiment, as shown in fig. 1, the device can be ensured to operate normally and orderly, and the extraction efficiency of nitrogen and oxygen is increased.
Wherein, a nitrogen outlet pipe 15 is arranged above the liquid nitrogen buffer tank 6, and a nitrogen outlet valve 16 is arranged inside the nitrogen outlet pipe 15.
In this embodiment, as shown in fig. 1, the device can be ensured to operate normally and orderly, and the extraction efficiency of nitrogen and oxygen is increased.
Wherein, the outer sides of the liquid oxygen separation tank 1 and the liquid nitrogen separation tank 5 are both provided with heat preservation cotton 17.
In this embodiment, as shown in fig. 1, a heat preservation effect can be provided outside the liquid oxygen separation tank 1 and the liquid nitrogen separation tank 5, so as to prevent the loss of cold air in the tank, thereby ensuring a cooling effect and reducing energy consumption.
It should be noted that the utility model relates to a device for producing high purity nitrogen and oxygen from air by low temperature rectification, which comprises a liquid oxygen separation tank 1, a filter box 2, a first exhaust fan 3, a liquid oxygen buffer tank 4, a liquid nitrogen separation tank 5, a liquid nitrogen buffer tank 6, an air inlet pipe 7, a second exhaust fan 8, a communicating pipe 9, a communicating pipe valve 10, an oxygen outlet pipe 11, an oxygen outlet valve 12, a first refrigerator 13, a second refrigerator 14, a nitrogen outlet pipe 15, a nitrogen outlet valve 16, heat insulation cotton 17, a primary filter screen 18, a secondary filter screen 19 and an active carbon filter layer 20, wherein the components are all universal standard components or components known by technicians in the field, the structure and principle of the components can be known by technicians in the field through technical manuals or conventional experimental methods, during operation, the air in the tank can be cooled to 182.962 ℃ through the liquid oxygen separation tank 1 and the first refrigerator 13, at the moment, oxygen in the air can be condensed into liquid oxygen, the liquid oxygen flows into a liquid oxygen buffer tank 4 through a pipeline, air which is not liquefied is conveyed into a liquid nitrogen separation tank 5 through a second exhaust fan 8 and a communicating pipe 9, the temperature of the residual air can be reduced to 195.8 ℃ through the arranged liquid nitrogen separation tank 5 and a second refrigerating machine 14, nitrogen in the air can be condensed into liquid nitrogen at the moment, the liquid nitrogen flows into a liquid nitrogen buffer tank 6 through a pipeline, so that the nitrogen and the oxygen in the air can be extracted and separated through low-temperature rectification, the low-energy consumption and high-efficiency energy-saving air purifier has the advantages that the external air can be collected through the arranged first exhaust fan 3 and the arranged air inlet pipe 7, the collection efficiency of the air is greatly improved, the air can be filtered through the arranged filter box 2, and dust impurities and toxic and harmful substances in the air can be effectively removed through the arranged primary filter screen 18, the secondary filter screen 19 and the activated carbon filter layer 20, ensure the quality of nitrogen gas and oxygen from the source, through the heat preservation cotton 17 that sets up, can provide the heat preservation effect in liquid oxygen knockout drum 1 and the 5 outsides of liquid nitrogen knockout drum, prevent that jar interior air conditioning from running off, ensured refrigerated effect on the one hand, on the other hand has reduced the energy consumption.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides an equipment of production high-purity nitrogen and oxygen from air through cryogenic rectification, includes liquid oxygen knockout drum (1), rose box (2), air exhauster (3), liquid oxygen buffer tank (4), liquid nitrogen knockout drum (5) and liquid nitrogen buffer tank (6), liquid oxygen knockout drum (1) one side is provided with rose box (2), rose box (2) one side is provided with air exhauster (3) No. one, liquid oxygen knockout drum (1) opposite side is provided with liquid oxygen buffer tank (4), liquid oxygen buffer tank (4) opposite side is provided with liquid nitrogen separation tank (5), liquid nitrogen knockout drum (5) one side is provided with liquid nitrogen buffer tank (6), its characterized in that: liquid oxygen knockout drum (1) inside is provided with refrigerating machine (13) No. one, refrigerating machine (13) top is provided with No. two air blowers (8), No. two air blowers (8) top communicates with each other through communicating pipe (9) and is connected with liquid nitrogen knockout drum (5), inside is provided with No. two refrigerating machine (14) of liquid nitrogen knockout drum (5), No. one air blower (3) one side is provided with intake pipe (7), liquid oxygen knockout drum (1), rose box (2), No. one air blower (3) and liquid oxygen buffer tank (4) all communicate with each other through intake pipe (7) and connect, rose box (2) inside one side is provided with elementary filter screen (18), elementary filter screen (18) one side is provided with secondary filter screen (19), secondary filter screen (19) one side is provided with activated carbon filter layer (20).
2. An apparatus for producing high purity nitrogen and oxygen from air by cryogenic rectification as claimed in claim 1 wherein: and a communicating pipe valve (10) is arranged in the communicating pipe (9).
3. An apparatus for producing high purity nitrogen and oxygen from air by cryogenic rectification as claimed in claim 1 wherein: an oxygen outlet pipe (11) is arranged above the liquid oxygen buffer tank (4), and an oxygen outlet valve (12) is arranged inside the oxygen outlet pipe (11).
4. An apparatus for producing high purity nitrogen and oxygen from air by cryogenic rectification as claimed in claim 1 wherein: a nitrogen outlet pipe (15) is arranged above the liquid nitrogen buffer tank (6), and a nitrogen outlet valve (16) is arranged inside the nitrogen outlet pipe (15).
5. An apparatus for producing high purity nitrogen and oxygen from air by cryogenic rectification as claimed in claim 1 wherein: and heat preservation cotton (17) is arranged on the outer sides of the liquid oxygen separation tank (1) and the liquid nitrogen separation tank (5).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822125605X | 2018-12-18 | ||
| CN201822125605 | 2018-12-18 |
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| Publication Number | Publication Date |
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| CN212619667U true CN212619667U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921691368.1U Active CN212619667U (en) | 2018-12-18 | 2019-10-11 | Equipment for producing high-purity nitrogen and oxygen from air through cryogenic rectification |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137829A (en) * | 2021-05-07 | 2021-07-20 | 吴琴 | Cryogenic oxygen production air rectification production line with harmful gas detection function |
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2019
- 2019-10-11 CN CN201921691368.1U patent/CN212619667U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113137829A (en) * | 2021-05-07 | 2021-07-20 | 吴琴 | Cryogenic oxygen production air rectification production line with harmful gas detection function |
| CN113137829B (en) * | 2021-05-07 | 2023-09-08 | 河北光龙气体有限公司 | Cryogenic oxygen-making air rectification production line with harmful gas detection function |
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