CN221267619U - Pressure swing adsorption nitrogen making machine - Google Patents
Pressure swing adsorption nitrogen making machine Download PDFInfo
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- CN221267619U CN221267619U CN202323314248.9U CN202323314248U CN221267619U CN 221267619 U CN221267619 U CN 221267619U CN 202323314248 U CN202323314248 U CN 202323314248U CN 221267619 U CN221267619 U CN 221267619U
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- connecting pipeline
- control valve
- fixedly connected
- adsorption tower
- pressure swing
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 89
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 43
- 239000002918 waste heat Substances 0.000 claims abstract description 15
- 230000008929 regeneration Effects 0.000 claims abstract description 9
- 238000011069 regeneration method Methods 0.000 claims abstract description 9
- 230000003584 silencer Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 14
- 229910052799 carbon Inorganic materials 0.000 description 14
- 239000002808 molecular sieve Substances 0.000 description 14
- 239000001301 oxygen Substances 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 14
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 14
- 239000007789 gas Substances 0.000 description 5
- 238000003795 desorption Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- OLBVUFHMDRJKTK-UHFFFAOYSA-N [N].[O] Chemical compound [N].[O] OLBVUFHMDRJKTK-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model relates to a pressure swing adsorption nitrogen making machine, which comprises an air compressor, wherein the air compressor is fixedly connected with a waste heat regeneration dryer, the waste heat regeneration dryer is fixedly connected with a buffer tank, the buffer tank is connected with a connecting pipeline II through a connecting pipeline VII, the connecting pipeline II is respectively connected with a first adsorption tower and a second adsorption tower, the upper surface of the first adsorption tower is fixedly connected with a connecting pipeline I, the connecting pipeline I is fixedly connected with a second control valve, the upper surface of the second adsorption tower is fixedly connected with a connecting pipeline VI, and the connecting pipeline VI is fixedly connected with a third control valve; the connecting pipeline I and the connecting pipeline VI are connected with an air outlet pipe, and a first control valve is fixedly connected on the air outlet pipe. And a ninth control valve and a tenth control valve are fixedly connected to the connecting pipeline II respectively. The utility model has the beneficial effects that: the structure design is reasonable, the operation is convenient, the processing and manufacturing cost is low, the air supply is stable and has no fluctuation, the energy is saved, the environment is protected, and the noise is reduced.
Description
Technical Field
The utility model relates to the technical field of pressure swing adsorption nitrogen production, in particular to a pressure swing adsorption nitrogen production machine.
Background
The nitrogen production equipment is equipment which takes air as a raw material and separates other gases in the air from nitrogen, wherein the nitrogen accounts for seventy percent of the total atmosphere. The existing pressure swing adsorption nitrogen production equipment has the defects of short adsorption time of 30 seconds, long switching time and 60 seconds, unstable air supply pressure and often caused pressure fluctuation of a nitrogen pipe network.
The nitrogen making machine currently used has no silencer, and the noise generated during the emptying process reaches more than 100 dB, which does not meet the environmental protection requirement.
At present, the supporting air buffer who uses of nitrogen making machine, this equipment utilizes the clamp plate to extrude the inside air of equipment, but the clamp plate can not carry out fine compression to the inside air of machine, is located the inside air of buffer and exists the uneven problem of flow all the time, and the sealing performance of buffer is poor, and outside air easily gets into inside the device, reduces the efficiency of device buffering.
The air needs to be dried before entering the nitrogen making machine, the existing configured dryer is electrically heated, and the defects of high operation cost, high consumption of adsorption materials, short service life of equipment and the like exist, and the drying effect of the air is difficult to meet the higher and higher gas consumption requirements of the equipment. For this reason, new methods and approaches need to be found to address this problem.
Disclosure of utility model
The utility model aims to provide a pressure swing adsorption nitrogen making machine which has the advantages of reasonable structural design, convenient operation, low processing and manufacturing cost, stable and non-fluctuation air supply, energy conservation, environmental protection and noise reduction.
The utility model relates to a pressure swing adsorption nitrogen making machine, which comprises an air compressor, wherein the air compressor 1 is fixedly connected with a waste heat regeneration dryer, the waste heat regeneration dryer is fixedly connected with a buffer tank, the buffer tank is connected with a connecting pipeline II through a connecting pipeline VII, the connecting pipeline II is respectively connected with a first adsorption tower and a second adsorption tower, the upper surface of the first adsorption tower is fixedly connected with a connecting pipeline I, the connecting pipeline I is fixedly connected with a second control valve, the upper surface of the second adsorption tower is fixedly connected with a connecting pipeline VI, and the connecting pipeline VI is fixedly connected with a third control valve; the connecting pipeline I and the connecting pipeline VI are connected with an air outlet pipe, and a first control valve is fixedly connected on the air outlet pipe.
The working modes of the first adsorption tower and the second adsorption tower can be automatically switched; when the first adsorption tower works, namely oxygen is adsorbed to prepare nitrogen, the second adsorption tower regenerates, and the oxygen adsorbed on the surface of the carbon molecular sieve last time is discharged; when the second adsorption tower works, namely, oxygen is adsorbed, nitrogen is prepared, the first adsorption tower regenerates, the oxygen adsorbed on the surface of the carbon molecular sieve last time is discharged, each adsorption tower is automatically switched to the other after working for 60 seconds, the switching time is 3 seconds, the operation is convenient, high-quality nitrogen can be continuously generated, the air supply is ensured to be stable, and no pressure fluctuation exists.
The buffer tank replaces an air buffer in the prior art, and solves the problem of impact on a carbon molecular sieve bed layer of the nitrogen making machine due to uneven air flow; the waste heat regeneration dryer is arranged, and the dryer is regenerated by utilizing the waste heat of the compressed air, so that the energy is saved and the environment is protected.
And the connecting pipeline II is fixedly connected with a ninth control valve and a tenth control valve respectively.
The bottom surface of the first adsorption tower is fixedly connected with a connecting pipeline IV, a sixth control valve is fixedly connected to the connecting pipeline IV, and the sixth control valve is fixedly connected with a connecting pipeline V; the bottom surface fixedly connected with connecting tube VIII of second adsorption tower, fixedly connected with seventh control valve on the connecting tube VIII, seventh control valve and connecting tube IX fixed connection, connecting tube VIII and connecting tube IX and blow-down pipe fixed connection.
And the blow-down pipe is fixedly connected with a silencer.
The silencer is set, the emptying noise is 70 dB, and the environment-friendly requirement is met.
And a connecting pipeline III is connected between the connecting pipeline IV and the connecting pipeline IX.
And the connecting pipeline III is fixedly connected with a fourth control valve and a fifth control valve respectively.
The beneficial effects of the utility model are as follows:
1) The working modes of the first adsorption tower 5 and the second adsorption tower can be automatically switched; when the first adsorption tower works, namely oxygen is adsorbed to prepare nitrogen, the second adsorption tower regenerates, and the oxygen adsorbed on the surface of the carbon molecular sieve last time is discharged; when the second adsorption tower works, namely oxygen is adsorbed, nitrogen is prepared, the first adsorption tower regenerates, the oxygen adsorbed on the surface of the carbon molecular sieve last time is discharged, each adsorption tower is automatically switched to the other after working for 60 seconds, the switching time is 3 seconds, under a certain pressure, due to the kinetic effect, the diffusion rate difference of oxygen and nitrogen on the carbon molecular sieve is large, oxygen molecules are adsorbed by the carbon molecular sieve in a large amount in a short time, and the nitrogen molecules are enriched in a gas phase, so that the purpose of oxygen-nitrogen separation is achieved; because the adsorption capacity of the carbon molecular sieve to oxygen has obvious difference along with different pressures, the pressure is reduced, so that oxygen molecules adsorbed by the carbon molecular sieve can be desorbed, the carbon molecular sieve can be regenerated, the carbon molecular sieve is repeatedly recycled, the adsorption tower is filled with the carbon molecular sieve, one tower adsorbs oxygen to prepare nitrogen, the other tower is desorbed and regenerated, the oxygen adsorbed on the surface of the carbon molecular sieve last time is discharged, the adsorption time is 60 seconds each time, the two adsorption towers are simultaneously equalized in pressure before switching, the pressure is equal, then the adsorption towers are switched, and the cycle is alternated, so that high-quality nitrogen is continuously generated; the operation is convenient, the air supply is ensured to be stable, and the pressure fluctuation is avoided.
2) The buffer tank replaces an air buffer in the prior art, and solves the problem of impact on a carbon molecular sieve bed layer of the nitrogen making machine due to uneven air flow; the waste heat regeneration dryer is arranged, and the dryer is regenerated by utilizing the waste heat of the compressed air, so that the energy is saved and the environment is protected.
3) The silencer is set, the emptying noise is 70 dB, and the environment-friendly requirement is met.
4) The device structural design is reasonable, processing manufacturing cost is low, noise emission is low, environmental protection is practical, can produce high-quality nitrogen in succession, guarantees that the air feed is stable, and no pressure fluctuation.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1. the system comprises an air compressor, a waste heat regeneration dryer, a buffer tank, a muffler, a first adsorption tower, a second adsorption tower, an air outlet pipe, a blow-down pipe, a first control valve, a second control valve, a third control valve, a fourth control valve, a fifth control valve, a sixth control valve, a fourth control valve, a fifth control valve, a sixth control valve and a fourth control valve. The valve system comprises a seventh control valve, a eighth control valve, a ninth control valve, a tenth control valve, a 21 connecting pipelines I and 22, connecting pipelines II and 23, connecting pipelines III and 24, connecting pipelines IV and 25, connecting pipelines V and 26, connecting pipelines VI and 27, connecting pipelines VII and 28, connecting pipelines VIII and 29 and connecting pipeline IX.
Detailed Description
Example 1.
The utility model will be further described with reference to fig. 1.
The waste heat recovery dryer comprises an air compressor 1, a waste heat recovery dryer 2, a buffer tank 3, a silencer 4, a first adsorption tower 5, a second adsorption tower 6, an air outlet pipe 7, a blow-down pipe 8, a first control valve 11, a second control valve 12, a third control valve 13, a fourth control valve 14, a fifth control valve 15, a sixth control valve 16, a seventh control valve 17, an eighth control valve 18, a ninth control valve 19, a tenth control valve 20, a connecting pipeline I21, a connecting pipeline II 22, a connecting pipeline III 23, a connecting pipeline IV 24, a connecting pipeline V25, a connecting pipeline VI 26, a connecting pipeline VII 27, a connecting pipeline VIII 28 and a connecting pipeline IX 29, wherein the air compressor 1 is fixedly connected with the waste heat recovery dryer 2, the waste heat recovery dryer 2 is fixedly connected with the buffer tank 3, the buffer tank 3 is connected with the connecting pipeline II 22 through the connecting pipeline VII 27, the connecting pipeline II 22 is respectively connected with the first adsorption tower 5 and the second adsorption tower 6, the upper surface of the first adsorption tower 5 is fixedly connected with the connecting pipeline I21, the connecting pipeline VI 26 is fixedly connected with the second adsorption tower 6, and the upper surface of the connecting pipeline VI 26 is fixedly connected with the connecting pipeline I26; the connecting pipeline I21 and the connecting pipeline VI 26 are connected with the air outlet pipe 7, and the air outlet pipe 7 is fixedly connected with a first control valve 11.
The connecting pipeline II 22 is fixedly connected with a ninth control valve 19 and a tenth control valve 20 respectively.
The bottom surface of the first adsorption tower 5 is fixedly connected with a connecting pipeline IV 24, the connecting pipeline IV 24 is fixedly connected with a sixth control valve 16, and the sixth control valve 16 is fixedly connected with a connecting pipeline V25; the bottom surface fixedly connected with connecting tube VIII 28 of second adsorption tower 6, fixedly connected with seventh control valve 17 on the connecting tube VIII 28, seventh control valve 17 and connecting tube IX 29 fixed connection, connecting tube VIII 28 and connecting tube IX 29 and blow-down pipe 8 fixed connection.
The blow-down pipe 8 is fixedly connected with a silencer 4.
And a connecting pipeline III 23 is connected between the connecting pipeline IV 24 and the connecting pipeline IX 29.
The fourth control valve 14 and the fifth control valve 15 are fixedly connected to the connecting pipeline III 23 respectively.
The air compressor 1 is a centrifugal compressor, the air source pressure is more than or equal to 0.6MPa, and the nitrogen production capacity is more than or equal to 3200 m/h.
The nitrogen purity of the nitrogen making machine can be adjusted between 99.0% and 99.9%, and nitrogen with corresponding purity can be supplied according to the nitrogen purity requirement.
The model of the silencer 4 is as follows: AN05-M5; the first control valve 11, the second control valve 12, the third control valve 13, the fourth control valve 14, the fifth control valve 15, the sixth control valve 16, the seventh control valve 17, the eighth control valve 18, the ninth control valve 19 and the tenth control valve 20 are of the following types: q22HD-40.
The using method comprises 1) the adsorption of a first adsorption tower 5 and the desorption process of a second adsorption tower 6: the eighth control valve 18, the fourth control valve 14, the second control valve 12 and the first control valve 11 on the first adsorption tower 5 are opened, compressed air enters the first adsorption tower 5 through the connecting pipeline III 23 to produce nitrogen, and the nitrogen is sent to a user through the connecting pipeline I21 and the air outlet pipe 7. 2) Middle part voltage equalizing of the first adsorption tower 5: after the adsorption of the first adsorption tower 5 is finished, the middle part is subjected to pressure equalizing, the fourth control valve 14, the eighth control valve 18 and the first control valve 11 are closed, then the ninth control valve 19, the second control valve 12, the fifth control valve 15 and the third control valve 13 in the middle part of the first adsorption tower 5 are opened, the air flow is conveyed to the second adsorption tower 6 through the connecting pipeline I21 and the connecting pipeline VI 26 of the first adsorption tower 5, the air pressure of the two towers is equal, and the compressed air enters the second adsorption tower to prepare nitrogen 6. 3) The first adsorption tower 5 is empty: the sixth control valve 16 is opened, the first adsorption tower 5 starts desorption, and the desorption gas enters the muffler 4 through the connecting pipeline IV 24 and the connecting pipeline V25 to be discharged. 4) The second adsorption tower 6 adsorbs, and the first adsorption tower 5 desorbs: the eighth control valve 18, the fifth control valve 15, the third control valve 13 and the first control valve 11 of the second adsorption tower 6 are opened, and compressed air enters the second adsorption tower 6 through the connecting pipeline III 23 to be adsorbed for nitrogen production. 5) Middle part voltage equalizing of the second adsorption tower 6: after the second adsorption tower 6 is adsorbed, the middle part is subjected to pressure equalizing, the fifth control valve 15, the eighth control valve 18 and the first control valve 11 are closed, then the tenth control valve 20, the third control valve 13, the fourth control valve 14 and the second control valve 12 in the middle part of the second adsorption tower 6 are opened, the air flow is conveyed to the first adsorption tower 5 through the connecting pipeline VI 26 and the connecting pipeline I21 in the second adsorption tower 6, the air pressure of the first adsorption tower 5 is equal to the air pressure of the second adsorption tower 6, and the compressed air enters the first adsorption tower 5 to prepare nitrogen. 6) And (3) emptying the second adsorption tower 6: the seventh control valve 17 is opened and the gas enters the blow-down pipe 8 through the connecting pipe VIII 28, and the second adsorption tower 6 starts desorption.
Claims (6)
1. A pressure swing adsorption nitrogen making machine, characterized in that: the device comprises an air compressor (1), wherein the air compressor (1) is fixedly connected with a waste heat regeneration dryer (2), the waste heat regeneration dryer (2) is fixedly connected with a buffer tank (3), the buffer tank (3) is connected with a connecting pipeline II (22) through a connecting pipeline VII (27), the connecting pipeline II (22) is respectively connected with a first adsorption tower (5) and a second adsorption tower (6), the upper surface of the first adsorption tower (5) is fixedly connected with a connecting pipeline I (21), the connecting pipeline I (21) is fixedly connected with a second control valve (12), the upper surface of the second adsorption tower (6) is fixedly connected with a connecting pipeline VI (26), and the connecting pipeline VI (26) is fixedly connected with a third control valve (13); the connecting pipeline I (21) and the connecting pipeline VI (26) are connected with the air outlet pipe (7), and the air outlet pipe (7) is fixedly connected with a first control valve (11).
2. A pressure swing adsorption nitrogen generator as defined in claim 1, wherein: the connecting pipeline II (22) is fixedly connected with a ninth control valve (19) and a tenth control valve (20) respectively.
3. A pressure swing adsorption nitrogen generator as defined in claim 2, wherein: the bottom surface of the first adsorption tower (5) is fixedly connected with a connecting pipeline IV (24), the connecting pipeline IV (24) is fixedly connected with a sixth control valve (16), and the sixth control valve (16) is fixedly connected with a connecting pipeline V (25); the bottom surface fixedly connected with connecting tube VIII (28) of second adsorption tower (6), fixedly connected with seventh control valve (17) on connecting tube VIII (28), seventh control valve (17) and connecting tube IX (29) fixed connection, connecting tube VIII (28) and connecting tube IX (29) and blow-down pipe (8) fixed connection.
4. A pressure swing adsorption nitrogen generator according to claim 3, wherein: the blow-down pipe (8) is fixedly connected with a silencer (4).
5. A pressure swing adsorption nitrogen generator as defined in claim 4, wherein: and a connecting pipeline III (23) is connected between the connecting pipeline IV (24) and the connecting pipeline IX (29).
6. A pressure swing adsorption nitrogen generator as defined in claim 5, wherein: the connecting pipeline III (23) is fixedly connected with a fourth control valve (14) and a fifth control valve (15) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323314248.9U CN221267619U (en) | 2023-12-06 | 2023-12-06 | Pressure swing adsorption nitrogen making machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323314248.9U CN221267619U (en) | 2023-12-06 | 2023-12-06 | Pressure swing adsorption nitrogen making machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221267619U true CN221267619U (en) | 2024-07-05 |
Family
ID=91697030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323314248.9U Active CN221267619U (en) | 2023-12-06 | 2023-12-06 | Pressure swing adsorption nitrogen making machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221267619U (en) |
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2023
- 2023-12-06 CN CN202323314248.9U patent/CN221267619U/en active Active
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