CN221279790U - Device for simultaneously preparing high-purity nitrogen and high-purity oxygen - Google Patents
Device for simultaneously preparing high-purity nitrogen and high-purity oxygen Download PDFInfo
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- CN221279790U CN221279790U CN202323124825.8U CN202323124825U CN221279790U CN 221279790 U CN221279790 U CN 221279790U CN 202323124825 U CN202323124825 U CN 202323124825U CN 221279790 U CN221279790 U CN 221279790U
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 120
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 239000001301 oxygen Substances 0.000 title claims abstract description 101
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 101
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 60
- 239000012530 fluid Substances 0.000 claims abstract description 84
- 239000007789 gas Substances 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 abstract description 8
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000005194 fractionation Methods 0.000 description 8
- 238000000746 purification Methods 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 238000010992 reflux Methods 0.000 description 6
- 239000002808 molecular sieve Substances 0.000 description 5
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 methane) Chemical class 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model discloses a device for simultaneously preparing high-purity nitrogen and high-purity oxygen, which at least comprises a cold box body, wherein an expander, a heat exchanger, a rectifying tower, a high-purity oxygen tower and a subcooler which are sequentially communicated are arranged in the cold box body; the cold box body is also provided with a first fluid pipeline and a second fluid pipeline, and the first fluid pipeline and the second fluid pipeline are both connected with the heat exchanger; the second fluid pipeline is further provided with a second fluid branch pipeline which is communicated with the expander; the first fluid conduit and the second fluid conduit form a circulation structure. The utility model realizes the preparation of high-purity oxygen while preparing high-purity nitrogen by communicating the high-purity oxygen tower with the middle part accessory of the rectifying tower in the rectifying nitrogen preparing device, reduces the number of equipment, has simple structure, improves the efficiency of preparing high-purity nitrogen and high-purity oxygen, and reduces the cost and the operation energy consumption.
Description
Technical Field
The utility model belongs to the technical field of high-purity nitrogen and high-purity oxygen preparation equipment, and particularly relates to a device for simultaneously preparing high-purity nitrogen and high-purity oxygen.
Background
Along with the economic development of the modern society, the requirement for the use amount of high-purity nitrogen and high-purity oxygen is increased; it is desirable to tailor the high purity nitrogen and high purity oxygen equipment to suit its needs for different applications. Rectification has been a traditional separation and purification means for hundreds of years, and is widely applied to various industries.
In the prior art, a device for preparing high-purity nitrogen and high-purity oxygen is commonly used, and two oxygen towers are needed for preparing high-purity oxygen, one is used for removing total hydrocarbon (mainly methane), and the other is used for removing argon. And the high-pressure nitrogen serving as a heat source of the condensing evaporator of the oxygen tower is changed into low-pressure nitrogen after passing through the oxygen tower. At this time, after pressurization by the circulating nitrogen compressor, the circulation of the whole nitrogen system can be completed. The applicant found that this device had the following disadvantages during production: the device has more equipment, more complex structure, low efficiency and higher cost and continuous operation energy consumption.
Disclosure of utility model
In view of all or part of the above-mentioned deficiencies of the prior art, the object of the present utility model is: the device for simultaneously preparing the high-purity nitrogen and the high-purity oxygen is characterized in that the middle accessory of the rectifying tower in the device for preparing the nitrogen is communicated with the high-purity oxygen tower through a pipeline to prepare the high-purity oxygen while preparing the high-purity nitrogen, so that the number of equipment is reduced, the structure is simple, the efficiency of preparing the high-purity nitrogen and the high-purity oxygen is improved, and the cost and the operation energy consumption are reduced.
In order to achieve the above object, the present utility model provides the following technical solutions: an apparatus for preparing high-purity nitrogen and high-purity oxygen simultaneously at least comprises a cold box body; an expander, a heat exchanger, a rectifying tower, a high-purity oxygen tower and a subcooler which are sequentially communicated are arranged in the cold box body; the cold box body is also provided with a first fluid pipeline and a second fluid pipeline, and the first fluid pipeline and the second fluid pipeline are both connected with the heat exchanger; the second fluid pipeline is further provided with a second fluid branch pipeline which is communicated with the expander; the first fluid conduit and the second fluid conduit form a circulation structure; the middle part of the rectifying tower is provided with a third fluid pipeline communicated with the upper part of the high-purity oxygen tower, the top of the high-purity oxygen tower is provided with an oxygen outlet, the pipeline of the oxygen fluid outlet is converged with a mixed gas outlet pipeline at the top of the rectifying tower, and the converged pipelines are sequentially communicated with the subcooler and the heat exchanger; the bottom of the high-purity oxygen tower is also provided with a liquid oxygen outlet.
In the scheme, at least one high-purity oxygen tower is added to the middle part of the rectification tower based on the original low-temperature rectification equipment, so that high-purity nitrogen is prepared and high-purity oxygen is prepared at the same time, the efficiency is improved compared with the method for respectively preparing the high-purity nitrogen and the high-purity oxygen, the number of equipment is reduced, and the energy consumption is reduced; the yield of the high-purity nitrogen and the high-purity oxygen is improved by providing raw materials for the rectifying tower through the second fluid branch pipeline; the oxygen at the oxygen outlet at the top of the high-purity oxygen tower and the residual mixed gas at the top of the rectifying tower are mixed through a fluid pipeline and then used as reflux gas of the whole device, so that the preparation efficiency is improved, and meanwhile, the purity of the high-purity nitrogen and the purity of the high-purity oxygen are higher.
The rectifying tower comprises a main rectifying tower and an auxiliary rectifying tower, and a fourth fluid pipeline communicated with the bottom of the auxiliary rectifying tower is arranged at the top of the main rectifying tower.
The first fluid pipeline is communicated with the bottom of the main rectifying tower, and the second fluid pipeline is communicated with the bottom of the auxiliary rectifying tower.
The middle parts of the high-purity oxygen tower and the main rectifying tower are communicated through a fifth fluid pipeline.
The middle parts of the high-purity oxygen tower and the auxiliary rectifying tower are communicated through a fifth branch fluid pipeline.
The main rectifying tower and the auxiliary rectifying tower are communicated with the Gao Chunyang tower through a fifth fluid pipeline and a fifth branch fluid pipeline.
The outlet pipeline at the bottom of the high-purity oxygen column is communicated with the subcooler and passes through the subcooler.
And the outlet pipeline is also communicated with a supercharging device.
The expansion machine comprises a first expansion machine and a second expansion machine, and the first expansion machine and the second expansion machine are communicated in parallel.
And stop valves are respectively arranged in the communication channels of the first expander and the second expander.
Compared with the prior art, the utility model has at least the following beneficial effects: by adding at least one high-purity oxygen tower in the middle of the rectification tower based on the original low-temperature rectification equipment, high-purity nitrogen is prepared and high-purity oxygen is prepared at the same time, so that the efficiency is improved compared with the method for preparing high-purity nitrogen and high-purity oxygen respectively, the number of equipment is reduced, and the energy consumption is reduced; the amount of the produced high-purity nitrogen and high-purity oxygen is increased by providing raw materials for the rectifying tower through the second fluid branch pipeline; the oxygen at the fluid outlet at the top of the high-purity oxygen tower and the residual gas at the top of the rectifying tower are mixed through the fluid pipeline and then used as reflux gas of the whole device, so that the preparation efficiency is improved, and meanwhile, the purity of the high-purity nitrogen and the high-purity oxygen is higher.
Drawings
In order to more clearly illustrate the technical solutions of specific embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic illustration of the communication of an apparatus for simultaneously producing high purity nitrogen and high purity oxygen in accordance with the present utility model;
FIG. 2 is another schematic illustration of the communication of an apparatus for simultaneously producing high purity nitrogen and high purity oxygen according to the present utility model.
Reference numerals: 1-pretreatment system, 2-purification system, 3-fractionation system, 301-first expander, 302-second expander, 303-cold box body, 3031-first fluid pipeline, 3032-second fluid pipeline, 3033-third fluid pipeline, 3034-second fluid branch pipeline, 304-heat exchanger, 305-subcooler, 306-rectifying tower, 3061-main rectifying tower, 3062-auxiliary rectifying tower, 3063-fifth fluid pipeline, 4-high purity oxygen tower, 401-fourth fluid pipeline.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully, and it is apparent that the embodiments described are only some, but not all, of the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
In the embodiment of the apparatus for simultaneously producing high purity nitrogen and high purity oxygen according to the present utility model, it should be noted that, in order to more specifically describe the technical solution, the steps described in the present embodiment do not strictly correspond to the steps described in the summary of the utility model.
The device for simultaneously preparing high-purity nitrogen and high-purity oxygen mainly comprises a pretreatment system 1, a purification system 2 and a fractionation system 3 which are connected in sequence; the pretreatment system 1 comprises a filter, air compression equipment and a precooling machine set which are connected in sequence; the air compressors and the coolers in the air compression equipment are multiple groups and are sequentially connected in series or in parallel so as to improve the purposes of pressurization and cooling. The precooling machine set comprises a plurality of groups, wherein each group at least comprises one saturated vapor and one heat exchanger and is connected in series with each other; the groups of precooling units are connected in parallel or in series. The pretreatment system 1 is used for pressurizing and cooling raw material air to a specified state; the purification system 2 comprises at least two groups of interconnected molecular sieve adsorbers and heaters, each group of molecular sieve adsorbers and heaters being connected in parallel. The purification system 2 can remove the content of CO2 and H2O in the air to about 1 PPm; the fractionation system 3 comprises an expander, a heat exchanger 304, a rectifying tower 306, a high purity oxygen tower 4 and a subcooler 305 which are mutually connected through fluid pipelines, wherein the expander comprises a first expander 301 and a second expander 302, the first expander 301 and the second expander 302 are communicated in parallel, and a stop valve is respectively arranged in a communication channel of the first expander 301 and the second expander 302; the first expander 301 and the second expander 302 are alternately used by being connected in parallel, and in other embodiments, more than two expanders may be provided and connected in parallel sequentially, so that the use of the expanders is alternately performed by stopping, and the service life of the device is prolonged. The fractionation system 3 is used to produce high purity nitrogen and high purity oxygen.
The preparation process of the device is as follows: the raw material air is filtered by a filter of the pretreatment system 1 to remove impurities such as dust, and then is compressed, cooled and dried for a plurality of times by a precooling machine set, and then is output to the purification system 2; the air is purged of water, carbon dioxide, acetylene and other hydrocarbons by passing through a molecular sieve adsorber in the purification system 2. Enters a fractionation system 3, and a reaction for preparing high-purity nitrogen and high-purity oxygen is carried out in the fractionation system 3.
The fractionation system 3 is externally provided with a cold box body 303, the cold box body 303 is provided with a first fluid pipeline 3031 and a second fluid pipeline 3032 which penetrate through the cold box body 303, and the first fluid pipeline 3031 is communicated with the top of a rectifying tower 306 through a heat exchanger 304 and a subcooler 305; the second fluid pipeline 3032 is communicated with the bottom of the rectifying tower 306 through the heat exchanger 304, the second fluid pipeline 3032 is also provided with a second fluid branch pipeline 3034 connected with the expander, and the gas of the expanded gas second fluid pipeline 3032 is converged and connected with the rectifying tower 306 for providing more raw material gas; the first fluid pipeline 3031 and the second fluid pipeline 3032 form a fluid circulation with the rectifying tower 306, so that the mixed gas is recycled, and the energy is saved; in a preferred embodiment, the second fluid conduit 3032 is provided with a conduit directly connected to the high purity oxygen column 4 to increase the amount of high purity oxygen produced. High purity oxygen column 4 and rectifying column 306 are equally divided into top, upper, middle, lower and bottom sections; the middle part of the rectifying tower 306 is provided with a third fluid pipeline 3033 communicated with the upper part of the high-purity oxygen tower 4; the upper part of the rectifying tower 306 is provided with a high-purity nitrogen outlet for delivering a part of the prepared high-purity nitrogen into the heat exchanger 304 through a pipeline and then discharging the high-purity nitrogen out of the cold box body 303 as a product to be output; another portion of the nitrogen liquefies into liquid nitrogen at the top of rectifying column 306, with one portion of the liquid nitrogen being output as product and another portion being reflux to rectifying column 306. The top of the rectifying tower 306 is provided with a mixed gas outlet for rectifying.
The top of the high-purity oxygen tower 4 is provided with an oxygen outlet, a pipeline of the oxygen outlet is converged with a mixed gas outlet pipeline at the top of the rectifying tower 306, and the converged gas sequentially passes through the subcooler 305 and the heat exchanger 304 to be used as reflux gas of the purifying system 2, so that saturated vapor of the molecular sieve absorber can be taken away, and then discharged to the air to regenerate the purifying system 2, thereby improving the preparation efficiency of the device; the upper part of the high-purity oxygen tower 4 is provided with a raw material air inlet, and is connected with an opening of an accessory in the middle of the rectifying tower 306 through a fluid pipeline, the concentration of methane and the like in the accessory in the middle of the rectifying tower 306 is the lowest, the concentration of oxygen is the highest, and the oxygen-enriched liquid space is used as the raw material of the high-purity oxygen tower 4, so that the purity of the prepared high-purity oxygen is higher; the lower part of the high purity oxygen tower 4 is provided with an air outlet which is connected with the lower part of the rectifying tower 306 through a pipeline, the bottom of the high purity oxygen tower 4 is provided with an outlet pipeline, and the outlet pipeline passes through the subcooler 306 to output the prepared high purity oxygen as a product.
Example 2
As shown in fig. 2, the main difference between the present embodiment and embodiment 1 is that the rectification column in the present embodiment includes a main rectification column 3061 and an auxiliary rectification column 3062, the pretreatment and purification system in the earlier stage of the system is unchanged, and the high purity oxygen column 4 is matched with the double-column rectification to prepare high purity nitrogen and simultaneously prepare high purity oxygen, so as to obtain higher total amount of high purity nitrogen and high purity oxygen.
The fractionation system 3 is provided with a cold box body 303 outside, the cold box body 303 is provided with a first fluid pipeline 3031 and a second fluid pipeline 3032, and the first fluid pipeline 3031 is communicated with the top of the high-purity oxygen column 4 sequentially through a heat exchanger 304 and a subcooler 305. The second fluid pipeline 3032 is sequentially communicated with the heat exchanger 304, the main rectifying tower 3061 and the auxiliary rectifying tower 3062, and a fourth fluid pipeline 3064 communicated with the bottom of the auxiliary rectifying tower 3062 is arranged at the top of the main rectifying tower 3061. Preferably, the second fluid pipeline 3032 is further provided with a pipeline communicated with the bottom of the auxiliary rectifying tower 3062; the second fluid pipeline is directly communicated with the bottom of the auxiliary rectifying tower, so that the air inflow of the auxiliary rectifying tower is increased, the amounts of high-purity nitrogen and high-purity oxygen can be further increased, and the preparation efficiency is improved.
The high purity oxygen column 4, the main rectifying column 3061 and the auxiliary rectifying column 3062 are divided into a top part, an upper part, a middle part, a lower part and a bottom part; a fifth fluid pipeline 3063 communicated with the upper part of the high-purity oxygen tower 4 is arranged in the middle of the main rectifying tower 3061; the upper part of the main rectifying tower 3061 is provided with a high-purity nitrogen outlet for delivering part of the prepared high-purity nitrogen into the heat exchanger 304 through a pipeline and then discharging the high-purity nitrogen out of the cold box body 303 as a product to be output; another part of the nitrogen is liquefied into liquid nitrogen at the top of the main rectifying tower 3061, and one part of the liquid nitrogen is output as a product, and the other part of the liquid nitrogen is used as reflux liquid of the main rectifying tower 3061. The top of the main rectifying tower 3061 is provided with a mixed gas outlet used for rectifying, the outlet is communicated with the bottom of the auxiliary rectifying tower 3062 through a fifth branch fluid pipeline 3064, and the mixed gas is led into the auxiliary rectifying tower 3062 for rectifying again. Each structure setting of the auxiliary rectifying tower 3062 is the same as that of the main rectifying tower 3061, a plurality of openings are formed in the main rectifying tower 3061 and the auxiliary rectifying tower 3062, and any one of the openings is connected with a pipeline.
The middle part of the main rectifying tower 3061 is provided with a fluid outlet, the fluid outlet is communicated with the bottom of the high-purity oxygen tower 4 through a fifth fluid pipeline, the middle part of the auxiliary rectifying tower 3062 is provided with a fluid outlet, the fluid outlet is communicated with the bottom of the high-purity oxygen tower 4 through a fifth branch fluid pipeline, and the main rectifying tower 3061 and the auxiliary rectifying tower 3061 can be simultaneously communicated with the high-purity oxygen tower 4 so as to improve the air inflow of the high-purity oxygen tower and further improve the yield of high-purity oxygen; it is also possible to connect one of the main rectifying column 3061 and the auxiliary rectifying column 3062 to the high purity oxygen column 4. An oxygen outlet is arranged at the top of the high-purity oxygen tower 4, a pipeline of the oxygen outlet and mixed gas at the top of the auxiliary rectifying tower 3062 are converged in a first fluid pipeline 3031 after being expanded by an expander, and the converged gas is used as reflux gas of the purifying system 2, so that saturated water vapor of a molecular sieve absorber can be taken away and then discharged to the air, the purifying system 2 is regenerated, and the preparation efficiency of the device is improved; the upper part of the high-purity oxygen tower 4 is provided with a raw material air inlet which is connected with the vicinity of the middle part of the main rectifying tower 3061 and/or the auxiliary rectifying tower 3062 through a pipeline; the lower part of the high purity oxygen tower 4 is provided with an air outlet which is connected with the lower part of the auxiliary rectifying tower 3062 through a pipeline, the bottom of the high purity oxygen tower 4 is provided with a liquid oxygen outlet which is connected through a fluid pipeline and passes through the subcooler 304, and the prepared product is output as a high purity oxygen product.
The above description of the embodiments is only intended to assist in understanding the method and core idea of the utility model. It should be noted that it will be apparent to those skilled in the art that various improvements and modifications can be made to the present utility model without departing from the principles of the utility model, and such improvements and modifications fall within the scope of the appended claims.
Claims (10)
1. A device for simultaneously preparing high-purity nitrogen and high-purity oxygen is characterized in that: at least comprises a cold box body (303);
An expander, a heat exchanger (304), a rectifying tower (306), a high-purity oxygen tower (4) and a subcooler (305) which are sequentially communicated are arranged in the cold box body (303);
The cold box body (303) is further provided with a first fluid pipeline (3031) and a second fluid pipeline (3032), and the first fluid pipeline (3031) and the second fluid pipeline (3032) are connected with the heat exchanger (304); the second fluid pipeline (3032) is further provided with a second fluid branch pipeline (3034), and the second fluid branch pipeline (3034) is communicated with the expander; -said first fluid conduit (3031) and said second fluid conduit (3032) form a circulation structure;
The middle part of the rectifying tower (306) is provided with a third fluid pipeline (3033) communicated with the upper part of the Gao Chunyang tower (4), the top of the Gao Chunyang tower (4) is provided with an oxygen outlet, the pipeline of the oxygen outlet is converged with a mixed gas outlet pipeline at the top of the rectifying tower (306), and the converged pipelines are sequentially communicated with the subcooler (305) and the heat exchanger (304); the bottom of Gao Chunyang tower (4) is also provided with a liquid oxygen outlet.
2. The apparatus for simultaneously producing high purity nitrogen and high purity oxygen according to claim 1, wherein: the rectifying tower (306) comprises a main rectifying tower (3061) and an auxiliary rectifying tower (3062), and a fourth fluid pipeline (401) communicated with the bottom of the auxiliary rectifying tower (3062) is arranged at the top of the main rectifying tower (3061).
3. The apparatus for simultaneously producing high purity nitrogen and high purity oxygen according to claim 2, wherein: the first fluid pipeline (3031) is communicated with the bottom of the main rectifying tower (3061), and the second fluid pipeline (3032) is communicated with the bottom of the auxiliary rectifying tower (3062).
4. The apparatus for simultaneously producing high purity nitrogen and high purity oxygen according to claim 2, wherein: the Gao Chunyang column (4) is communicated with the middle part of the main rectifying column (3061) through a fifth fluid pipeline (3063).
5. A device for simultaneously producing high purity nitrogen and high purity oxygen according to claim 2 or 3, wherein: the Gao Chunyang tower (4) is communicated with the middle part of the auxiliary rectifying tower (3062) through a fifth branch fluid pipeline.
6. The apparatus for simultaneously producing high purity nitrogen and high purity oxygen according to claim 2, wherein: the main rectifying tower (3061) and the auxiliary rectifying tower (3062) are respectively communicated with the Gao Chunyang tower (4) through a fifth fluid pipeline (3063) and a fifth branch fluid pipeline.
7. The apparatus for simultaneously producing high purity nitrogen and high purity oxygen according to claim 1, wherein: the liquid oxygen outlet at the bottom of the Gao Chunyang tower (4) is communicated with the subcooler (305) through a pipeline and passes through the subcooler (305).
8. The apparatus for simultaneously producing high purity nitrogen and high purity oxygen according to claim 7, wherein: and the outlet pipeline is also communicated with a supercharging device.
9. The apparatus for simultaneously producing high purity nitrogen and high purity oxygen according to claim 1, wherein: the expansion machine comprises a first expansion machine (301) and a second expansion machine (302), wherein the first expansion machine (301) and the second expansion machine (302) are communicated in parallel.
10. The apparatus for simultaneously producing high purity nitrogen and high purity oxygen according to claim 9, wherein: and stop valves are respectively arranged in the communication channels of the first expander (301) and the second expander (302).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202323124825.8U CN221279790U (en) | 2023-11-20 | 2023-11-20 | Device for simultaneously preparing high-purity nitrogen and high-purity oxygen |
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| CN202323124825.8U CN221279790U (en) | 2023-11-20 | 2023-11-20 | Device for simultaneously preparing high-purity nitrogen and high-purity oxygen |
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