CN113117420A - High-purity nitrogen preparation equipment and preparation method - Google Patents
High-purity nitrogen preparation equipment and preparation method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
- C01B21/0438—Physical processing only by making use of membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0012—In-line filters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
- B01D46/0045—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding by using vanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/229—Integrated processes (Diffusion and at least one other process, e.g. adsorption, absorption)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
- C01B21/045—Physical processing only by adsorption in solids
- C01B21/0455—Physical processing only by adsorption in solids characterised by the adsorbent
- C01B21/0461—Carbon based materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D2053/221—Devices
- B01D2053/223—Devices with hollow tubes
- B01D2053/224—Devices with hollow tubes with hollow fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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Abstract
The utility model relates to a nitrogen gas preparation field especially relates to a high-purity nitrogen gas preparation equipment, and its technical scheme is, a high-purity nitrogen gas preparation equipment, including the organism, still including set gradually on the organism be used for filtering gaseous filter equipment, be used for compressed gas's air compression device, be used for handling compressed air's air treatment device and be used for the membrane separation device of oxygen and nitrogen separation. This application has the nitrogen making efficiency of improve equipment, improves the effect of the preparation purity of nitrogen gas.
Description
Technical Field
The application relates to the field of nitrogen preparation, in particular to high-purity nitrogen preparation equipment and a preparation method.
Background
Nitrogen is chemically inactive, and is difficult to react with other substances at normal temperature, but can be chemically changed with certain substances under the conditions of normal temperature and high energy, and can be used for preparing chemical substances useful for human beings. Meanwhile, nitrogen can also be used as filling gas for food packaging, so that oxygen is conveniently isolated, and the shelf life of food is prolonged.
At present, people can use membrane separation to produce nitrogen, membrane separation air nitrogen production is one of non-low temperature nitrogen production technologies, and the method is to separate oxygen and nitrogen by utilizing different permeability of the oxygen and the nitrogen in a hollow fiber membrane under certain pressure to produce nitrogen. The membrane separation nitrogen making device has the characteristics of simple structure, small volume, convenient enclosure, quicker gas production, convenient capacity increase and the like, and is convenient for people to use to make nitrogen.
In view of the above-mentioned related technologies, the inventor believes that there are defects that the membrane separation nitrogen production has a high requirement on the cleanliness of compressed air, and the direct entry of gas into the membrane separation device is liable to affect the nitrogen production efficiency.
Disclosure of Invention
In order to improve the nitrogen production efficiency of equipment and improve the preparation purity of nitrogen, the application provides high-purity nitrogen preparation equipment and a preparation method.
On the one hand, the high-purity nitrogen preparation equipment provided by the application adopts the following technical scheme:
the high-purity nitrogen preparation equipment comprises a machine body, and further comprises a filtering device, an air compression device, an air treatment device and a membrane separation device, wherein the filtering device is arranged on the machine body in sequence and used for filtering gas, the air compression device is used for compressing gas, the air treatment device is used for treating compressed air, and the membrane separation device is used for separating oxygen and nitrogen.
Through adopting above-mentioned technical scheme, filter equipment is convenient for filter initial gas, improves the air quality of air compressor arrangement compression, and air treatment device is convenient for improve the air quality of compressed back gas, and membrane separation device is convenient for carry out nitrogen, oxygen separation to gas, effectively improves the nitrogen gas quality.
Preferably, filter equipment includes the rose box, sets up the air inlet fan on the rose box and sets up the filtration piece in the rose box, offer the air inlet that is used for gaseous entering on the rose box, be equipped with the fill of admitting air with the air inlet intercommunication on the rose box, the air inlet fan is located the air inlet.
Through adopting above-mentioned technical scheme, the rose box is convenient for improve the stability of admitting air fan and filtering piece, and the air inlet is convenient for gaseous entering rose box in, is convenient for improve gaseous stability, and the air inlet is fought in the gaseous entering rose box of being convenient for, and the admission fan is convenient for blow gas to the rose box in, is convenient for filter the piece and filters gas.
Preferably, filter piece includes a plurality of setting in the installing frame of rose box and sets up the filter screen in the installing frame, a plurality of the internal diameter of installing frame reduces along the gas flow direction gradually.
Through adopting above-mentioned technical scheme, the installing frame is convenient for improve the stability of filter screen, and the filter screen is convenient for filter the gas that gets into in the rose box, effectively improves the air quality, reduces the impurity that contains in the air, and the internal diameter of a plurality of installing frames reduces gradually, and the drive gas of being convenient for filters on the filter screen.
Preferably, the air compression device comprises an air compression piece and an air storage tank for storing air, and the air compression piece is provided with a first connecting pipe communicated with the air storage tank.
Through adopting above-mentioned technical scheme, the air compression piece is convenient for compress the gas after filter equipment filters, and the gas holder is convenient for save the gas that the air compression piece compression is good, and the connecting pipe is convenient for connect air compression piece and gas holder.
Preferably, the filter box is provided with a second connecting pipe communicated with the air compression piece, and the filter box is provided with an air supply fan positioned at an air inlet of the second connecting pipe.
Through adopting above-mentioned technical scheme, the fan of supplying air is convenient for transport the air compression spare with the gas that filters in the rose box in, and rose box and air compression spare are convenient for connect to connecting pipe two, and the gas of being convenient for circulates.
Preferably, the air treatment device includes the breather pipe with the gas holder intercommunication, set up on the breather pipe and be used for separating the separator of gas and water, be used for dry gaseous drying member and air treatment component, be equipped with the pipeline one that is used for with the drying member intercommunication on the separator, still be equipped with the pipeline two that is used for the air outflow on the drying member, be equipped with the governing valve that is located between gas holder and the separator on the breather pipe.
Through adopting above-mentioned technical scheme, the breather pipe is convenient for compressed gas and circulates, the separator is convenient for with the water in the gas, gas separates, the desiccator is convenient for further improve gaseous cleanliness factor, the air treatment subassembly is convenient for handle gas, be convenient for reduce the content of impurity in the air, improve the production quality of follow-up nitrogen gas, pipeline one is convenient for enter into in the dry piece from the separator, pipeline two is convenient for in the air in the dry piece enters into the air treatment subassembly, the governing valve is convenient for control gas and circulates, the staff switchgear of being convenient for.
Preferably, the air treatment subassembly includes that it sets gradually large granule filter, oil mist filter and the active carbon filter on second pipeline to follow the gas flow direction, the end of giving vent to anger of second pipeline is equipped with the gas storage tank that is used for storing gas, be equipped with the control valve that is located active carbon filter and gas storage tank between on second pipeline.
Through adopting above-mentioned technical scheme, large granule filter, oil mist filter and active carbon filter are convenient for filter the impurity that contains in the gas, improve the air quality, improve the purity of later stage nitrogen gas, and the gas storage tank is convenient for store the good gas of processing, and the control valve is convenient for control gaseous circulation, is convenient for when check out test set, closes the circulation passageway.
Preferably, the membrane separation device comprises a plurality of steel pipes and hollow fiber membrane components arranged in the steel pipes, a circulating pipe for gas to flow out is arranged on the gas storage tank, an air inlet pipe communicated with the circulating pipe is arranged at one end of each steel pipe, an air outlet pipe is arranged at the other end of each steel pipe, and an exhaust pipe is further arranged on each steel pipe.
Through adopting above-mentioned technical scheme, membrane separation device is convenient for carry out nitrogen, oxygen separation with the gas after filtering, and the hollow fiber membrane module is convenient for draw nitrogen gas according to the molecular characteristic of nitrogen, and in the intake pipe was convenient for the air admission steel pipe, the outlet duct was convenient for nitrogen gas and is discharged, and the blast pipe is convenient for gas except nitrogen gas and discharges.
Preferably, the machine body is further provided with a nitrogen buffer tank for storing nitrogen, and the nitrogen buffer tank is communicated with the air outlet pipe.
Through adopting above-mentioned technical scheme, the nitrogen buffer tank is convenient for save nitrogen gas and is used for gaseous buffering, is convenient for improve the stability of nitrogen gas.
On the other hand, the application provides a preparation method of high-purity nitrogen, which adopts the following technical scheme: step1, introducing the gas into a filtering device for filtering, and primarily filtering impurities in the gas;
step2, conveying the primarily filtered gas into an air compression device for compression, and providing enough air for the membrane separation device;
step3, sending the compressed air into an air treatment device, and removing moisture, oil, particulate matters and the like in the air by using the air treatment device;
and Step4, sending the compressed air after fine filtration into a membrane separation device, decomposing the compressed air into nitrogen and oxygen enrichment through the membrane separation device, and storing the nitrogen reaching the standard in a nitrogen buffer tank.
By adopting the technical scheme, the raw material gas is purified firstly, so that the purity of subsequent nitrogen is convenient to improve, the nitrogen making efficiency of equipment is improved, and the preparation purity of the nitrogen is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the filtering device is convenient for filtering the gas, reducing the content of impurities in the gas, reducing the cleaning pressure of the air treatment device, prolonging the service life of the equipment and facilitating the purification treatment of nitrogen at the later stage;
2. the air treatment device is convenient for filtering the compressed gas again, so that the cleanliness of the gas is improved, and the purification of nitrogen at the later stage is facilitated;
3. the membrane separation device is convenient for separating nitrogen and oxygen and collecting purified nitrogen.
Drawings
FIG. 1 is a first schematic diagram of the configuration of a high purity nitrogen production apparatus of the present application;
FIG. 2 is a schematic diagram of a second embodiment of a high purity nitrogen production apparatus of the present application;
FIG. 3 is a schematic diagram of the construction of a filtration device of the present application;
fig. 4 is a schematic view of the structure of the membrane separation device in the present application.
Description of reference numerals: 1. a body; 2. a filtration device; 21. a filter box; 211. an air inlet; 212. an air inlet hopper; 213. an air supply fan; 22. an air inlet fan; 23. a filter member; 231. installing a frame; 232. a filter screen; 3. an air compression device; 31. an air compression member; 32. a gas storage tank; 4. an air treatment device; 41. a breather pipe; 42. a separator; 43. drying the part; 44. an air handling assembly; 441. a large particle filter; 442. an oil mist filter; 443. an activated carbon filter; 5. a membrane separation device; 51. a steel pipe; 52. a hollow fiber membrane module; 6. a first connecting pipe; 7. a second connecting pipe; 8. a first pipeline; 9. a second pipeline; 10. adjusting a valve; 11. a gas storage tank; 12. a control valve; 13. a flow-through tube; 14. an air inlet pipe; 15. an air outlet pipe; 16. a nitrogen buffer tank; 17. and (4) exhausting the gas.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses high-purity nitrogen preparation equipment. Referring to fig. 1, the apparatus includes a body 1, and the body 1 is provided with a filtering device 2 for filtering an initial gas, an air compressing device 3 for compressing the filtered gas, an air processing device 4 for re-filtering the compressed gas, and a membrane separation device 5 for purifying the filtered gas with nitrogen in this order.
Referring to fig. 2 and 3, the filtering device 2 includes a filtering box 21, an air inlet fan 22 for sending air into the filtering box 21, and a filtering member 23 for filtering the air, the filtering box 21 is provided with an air inlet 211 for the air to enter the box, the air inlet fan 22 is located at the air inlet 211, and the air inlet fan 22 transmits the air into the filtering box 21. The filter box 21 is further provided with an air inlet hopper 212 positioned at the air inlet 211, and the air inlet hopper 212 protects the air inlet fan 22 to a certain extent, so that the influence of the environment on the air inlet fan 22 is reduced. The end of the filter box 21 far away from the air supply fan 22 is provided with an air supply fan 213, and the air supply fan 213 supplies the filtered air to the air compression device 3, so that the nitrogen purification efficiency is improved. The filter element 23 includes a plurality of installation frames 231 arranged in the filter box 21 and a filter screen 232 arranged on the installation frame 231, the installation frames 231 are sequentially arranged along the air flowing direction, the inner diameter of the installation frame 231 is gradually reduced along the air flowing direction, the air is gradually squeezed, and the air is forced to enter the filter screen 232 for filtering. The number of stacked layers of the filter screens 232 on the mounting frames 231 is gradually increased along with the air flow direction.
Referring to fig. 2 and 3, the air compressing device 3 includes an air compressing member 31 and an air tank 32 for storing compressed air, the air compressing member 31 is an air compressor, a second connecting pipe 7 is provided between the air compressing member 31 and the filter box 21, an air supply fan 213 is provided at an air inlet 211 of the second connecting pipe 7, and the air supply fan 213 transports the filtered air into the air compressing member 31 through the second connecting pipe 7 for compression. A first connecting pipe 6 is arranged between the air compression piece 31 and the air storage tank 32, the first connecting pipe 6 conveys compressed air into the air storage tank 32, and the air is operated in the next step through the air storage tank 32.
Referring to fig. 1 and 2, the air treatment device 4 includes a vent pipe 41 communicating with the air tank 32, a separator 42 for separating water and gas in the gas, a drying member 43 for drying the gas, and an air treatment unit 44 for treating the gas again, wherein the vent pipe 41 is provided with an adjusting valve 10, and the adjusting valve 10 facilitates opening and closing of the vent pipe 41. After the separator 42 processes the gas, the drying piece 43 performs drying processing on the gas again, so that the content of other impurities in the gas is effectively reduced, and the purification rate of the nitrogen at the later stage is further improved. The separator 42 is provided with a first conduit 8 for communicating with the drying element 43, and the separator 42 is also provided with a second conduit 9 for conveying the treated gas to the air treatment assembly 44. The air processing assembly 44 comprises a large particle filter 441, an oil mist filter 442 and an active carbon filter 443 which are sequentially arranged on the pipeline 9, the large particle filter 441 intercepts large particles, the pressure of rear-end filtration is reduced, the oil mist filter 442 intercepts and collects oil mist, peculiar smell and harmful gas can be conveniently removed by the active carbon filter 443 at the later stage, the content of impurities in the gas is further reduced, and the purification efficiency of nitrogen is improved.
Referring to fig. 2 and 4, a control valve 12 is arranged at the air outlet end of the second pipeline 9, and the control valve 12 is matched with the regulating valve 10, so that the air treatment device 4 can be conveniently overhauled and checked. And the gas outlet end of the second pipeline 9 is provided with a gas storage tank 11 for storing the treated gas, and the gas storage tank 11 is provided with a circulating pipe 13 for conveying the gas to the membrane separation device 5. The membrane separation device 5 comprises a plurality of steel pipes 51 and hollow fiber membrane modules 52 arranged in the steel pipes 51, wherein one end of each steel pipe 51 is provided with an air inlet pipe 14 communicated with the circulating pipe 13, the other end of each steel pipe 51 is provided with an air outlet pipe 15 for discharging nitrogen, the air outlet end of the air outlet pipe 15 is provided with a nitrogen buffer tank 16 for storing nitrogen, and the nitrogen buffer tank 16 collects the nitrogen. The steel pipe 51 is also provided with an exhaust pipe 17 for exhausting gas other than nitrogen.
The implementation principle of the high-purity nitrogen preparation equipment in the embodiment of the application is as follows: when purifying nitrogen, the raw material gas is filtered by the filter device 2, so that the gas quality is improved, and the treatment pressure of subsequent equipment is reduced. The air supply fan 22 supplies the air into the filter box 21, and after the air is filtered by the filter screen 232, the filtered air is supplied to the second connection pipe 7 by the air supply fan 213. The second connecting pipe 7 conveys the gas to the air compressing element 31 for compression, and then the compressed gas is conveyed to the gas storage tank 32 for storage through the first connecting pipe 6. When gas needs to be treated, the gas enters the separator 42 through the vent pipe 41 to be subjected to water and gas separation treatment, and the gas treated by the separator 42 is dried again through the drying piece 43, so that the gas quality is improved, and the pressure of subsequent equipment is reduced. The dried gas is filtered again through the air treatment assembly 44, so that the content of impurities in the gas is reduced, the subsequent membrane separation device 5 can purify the nitrogen conveniently, and the purification efficiency of the nitrogen is improved.
The embodiment of the application also discloses a preparation method of high-purity nitrogen, which comprises the preparation equipment of high-purity nitrogen, and comprises the following steps of Step1, introducing the gas into the filtering device 2 for filtering, primarily filtering impurities in the gas, improving the quality of original air, and reducing the treatment pressure of subsequent equipment;
step2, conveying the primarily filtered gas into the air compression device 3 for compression, and providing enough air for the membrane separation device 5;
step3, sending the compressed air into an air treatment device 4, removing water, oil and particulate matters in the air, and performing multiple treatments to improve the quality of the air and reduce the content of impurities in the air;
step4, sending the compressed air after fine filtration into the membrane separation device 5, decomposing the compressed air into nitrogen and rich oxygen through the membrane separation device 5, storing the nitrogen reaching the standard in the nitrogen buffer tank 16, discharging the rich oxygen through the exhaust pipe 17, and collecting the gas through the exhaust pipe 17 according to the requirement.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A high-purity nitrogen gas preparation equipment comprises a machine body (1), and is characterized in that: the device is characterized by further comprising a filtering device (2) which is arranged on the machine body (1) and used for filtering gas, an air compressing device (3) used for compressing gas, an air processing device (4) used for processing compressed air and a membrane separation device (5) used for separating oxygen and nitrogen.
2. The apparatus for producing high purity nitrogen gas according to claim 1, wherein: filter equipment (2) include rose box (21), set up air inlet fan (22) on rose box (21) and set up filtration piece (23) in rose box (21), offer air inlet (211) that are used for gaseous entering on rose box (21), be equipped with air inlet fill (212) with air inlet (211) intercommunication on rose box (21), air inlet fan (22) are located air inlet (211).
3. The apparatus for producing high purity nitrogen gas according to claim 2, wherein: filter (23) including a plurality of setting up installing frame (231) in rose box (21) and setting up filter screen (232) in installing frame (231), a plurality of the internal diameter of installing frame (231) reduces along gas flow direction gradually.
4. The apparatus for producing high purity nitrogen gas according to claim 1, wherein: the air compression device (3) comprises an air compression piece (31) and an air storage tank (32) used for storing air, wherein a first connecting pipe (6) used for being communicated with the air storage tank (32) is arranged on the air compression piece (31).
5. The apparatus for producing high purity nitrogen gas according to claim 1, wherein: and a second connecting pipe (7) communicated with the air compression piece (31) is arranged on the filter box (21), and an air supply fan (213) positioned at an air inlet (211) of the second connecting pipe (7) is arranged on the filter box (21).
6. The apparatus for producing high purity nitrogen gas according to claim 1, wherein: air treatment facilities (4) are including breather pipe (41) with gas holder (32) intercommunication, set up on breather pipe (41) and be used for separating separator (42) of gas and water, be used for dry gaseous drier (43) and air treatment component (44), be equipped with on separator (42) and be used for pipeline one (8) with drier (43) intercommunication, still be equipped with on drier (43) and be used for the pipeline two (9) that the air flows out, be equipped with on breather pipe (41) and be located governing valve (10) between gas holder (32) and separator (42).
7. The apparatus for producing high purity nitrogen gas according to claim 5, wherein: the air treatment assembly (44) comprises a large particle filter (441), an oil mist filter (442) and an active carbon filter (443) which are sequentially arranged on a second pipeline (9) along the gas flowing direction, a gas storage tank (11) used for storing gas is arranged at the gas outlet end of the second pipeline (9), and a control valve (12) located between the active carbon filter (443) and the gas storage tank (11) is arranged on the second pipeline (9).
8. The apparatus for producing high purity nitrogen gas according to claim 1, wherein: the membrane separation device (5) comprises a plurality of steel pipes (51) and hollow fiber membrane assemblies (52) arranged in the steel pipes (51), a circulating pipe (13) used for gas to flow out is arranged on the gas storage tank (11), an air inlet pipe (14) used for being communicated with the circulating pipe (13) is arranged at one end of each steel pipe (51), an air outlet pipe (15) is arranged at the other end of each steel pipe (51), and an air outlet pipe (17) is further arranged on each steel pipe (51).
9. The apparatus for producing high purity nitrogen gas according to claim 1, wherein: be equipped with nitrogen buffer tank (16) that are used for saving nitrogen gas on organism (1), nitrogen buffer tank (16) and outlet duct (15) intercommunication.
10. A method for producing high purity nitrogen gas, the high purity nitrogen gas production apparatus according to any one of claims 1 to 9, characterized in that: the method is implemented as follows,
step1, introducing the gas into a filtering device (2) for filtering, and primarily filtering impurities in the gas;
step2, conveying the primarily filtered gas into an air compression device (3) for compression, and providing enough air for a membrane separation device (5);
step3, sending the compressed air into an air treatment device (4), and removing moisture, oil, particulate matters and the like in the air by using the air treatment device (4);
and Step4, sending the compressed air after fine filtration into a membrane separation device (5), decomposing the compressed air into nitrogen and rich oxygen through the membrane separation device (5), and storing the nitrogen reaching the standard in a nitrogen buffer tank (16).
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| CN202110351813.5A CN113117420A (en) | 2021-03-31 | 2021-03-31 | High-purity nitrogen preparation equipment and preparation method |
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| CN202110351813.5A CN113117420A (en) | 2021-03-31 | 2021-03-31 | High-purity nitrogen preparation equipment and preparation method |
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| CN113521971A (en) * | 2021-08-25 | 2021-10-22 | 沈阳煤炭科学研究所有限公司 | Underground mobile nitrogen making device for coal mine and process thereof |
| TWI818307B (en) * | 2021-09-01 | 2023-10-11 | 浚清企業股份有限公司 | Gas purification and extraction equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521971A (en) * | 2021-08-25 | 2021-10-22 | 沈阳煤炭科学研究所有限公司 | Underground mobile nitrogen making device for coal mine and process thereof |
| TWI818307B (en) * | 2021-09-01 | 2023-10-11 | 浚清企業股份有限公司 | Gas purification and extraction equipment |
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Application publication date: 20210716 |