CN220758600U - Pressure swing adsorption oxygen generator - Google Patents
Pressure swing adsorption oxygen generator Download PDFInfo
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- CN220758600U CN220758600U CN202321934729.7U CN202321934729U CN220758600U CN 220758600 U CN220758600 U CN 220758600U CN 202321934729 U CN202321934729 U CN 202321934729U CN 220758600 U CN220758600 U CN 220758600U
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- adsorber
- pressure swing
- swing adsorption
- pulse
- vacuum pump
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000001301 oxygen Substances 0.000 title claims abstract description 36
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 36
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 32
- 238000004891 communication Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000003584 silencer Effects 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000013022 venting Methods 0.000 claims 2
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 239000006096 absorbing agent Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 16
- 239000007789 gas Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000003795 desorption Methods 0.000 description 7
- 239000003463 adsorbent Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000030279 gene silencing Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Separation Of Gases By Adsorption (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
The utility model discloses a pressure swing adsorption oxygen generating device, and relates to the technical field of oxygen generation. Wherein, this pressure swing adsorption oxygenerator includes: a first adsorber; the second absorber is arranged opposite to the first absorber; the first pipeline component is communicated with the bottoms of the first adsorber and the second adsorber respectively; the pulse centrifugal blower is communicated with the first adsorber through the first pipeline component; the first variable frequency motor is electrically connected with the pulse centrifugal blower; the centrifugal vacuum pump is communicated with the second adsorber through the first pipeline component; and the second variable frequency motor is electrically connected with the centrifugal vacuum pump. The utility model solves the problems that the Roots blower is designed from acoustic treatment at present, high-frequency noise is easy to treat, but low-frequency noise is difficult to treat, the physical problems of hearts and the like of operators are easy to cause when the Roots blower is in a low-frequency noise environment for a long time, and the rotor is heavy, the friction resistance is large and the energy consumption is high when the Roots blower is operated.
Description
Technical Field
The utility model relates to the technical field of oxygen production, in particular to a pressure swing adsorption oxygen production device.
Background
The VPSA pressure swing adsorption oxygen production process is more and more mature, and has the advantages of small investment, small occupied area, simple operation, energy conservation, convenient use and the like, which are gradually accepted by the market, and the process with low oxygen enrichment purity requirement gradually replaces an air cooling air separation process, so that the VPSA pressure swing adsorption oxygen production process is widely applied to industries of steel, nonferrous metal smelting, chemical industry, kiln energy conservation, environmental protection, glass, paper making and the like, and the larger the scale is, the single set of standard die exceeds 12000Nm3/h.
At present, a Roots blower pressurized adsorption and wet Roots vacuum pump pumping desorption two-tower switching process is often adopted, and due to the characteristics of large fluctuation range and high frequency of inlet air pressure fluctuation, impact resistance and stable flow of the Roots blower, the impact of inlet air on the adsorbent can be effectively reduced, and the device is particularly beneficial to long-term stable operation. The vacuum degree of the adsorption bed of the VPSA oxygen generator also frequently and greatly fluctuates, and the Roots vacuum pump can reduce desorption energy consumption, so that the Roots vacuum pump is commonly used as desorption power equipment of the oxygen generator at home and abroad.
Due to the inherent characteristics of the Roots blower, the rotating speed of small equipment is generally 1450r/min and 980r/min, and the noise generated during operation is sharp and even exceeds 130dB (A); the rotation speed of large equipment is as low as 590r/min, the operation machine is generally not higher than 120dB (A), but the noise spectrum is wide from 10HZ to 10000HZ, and the noise is low.
At present, the Roots blower is designed from acoustic treatment, although high-frequency noise is easy to treat, low-frequency noise is difficult to treat, the physical problems of hearts and the like of operators are easy to cause when the Roots blower is in a low-frequency noise environment for a long time, and the energy consumption is high due to heavy rotors and high friction resistance when the Roots blower is operated; and limited by the current processing level, monomer equipment has not been able to meet the air volume requirements of large-scale equipment. In view of the above-mentioned problems, no effective solution has been proposed yet.
Disclosure of Invention
The utility model aims to: provides a pressure swing adsorption oxygen generating device to solve the problems existing in the prior art.
The technical scheme is as follows: a pressure swing adsorption oxygen plant comprising:
a first adsorber;
a second adsorber disposed opposite to the first adsorber;
a first conduit assembly in communication with the bottoms of the first adsorber and the second adsorber, respectively;
a pulse centrifugal blower in communication with the first adsorber through the first conduit assembly;
the first variable frequency motor is electrically connected with the pulse centrifugal blower;
a centrifugal vacuum pump in communication with the second adsorber through the first conduit assembly; and
The second variable frequency motor is electrically connected with the centrifugal vacuum pump;
and driving the pulse centrifugal blower to rotate through the first variable frequency motor, and driving the centrifugal vacuum pump to act through the second variable frequency motor.
Preferably, a heat exchanger is arranged between the pulse centrifugal blower and the first pipeline component.
Preferably, four first control switch valves are arranged on the first pipeline assembly, and the four first control switch valves are arranged in a pairwise opposite mode.
Preferably, the top of the first adsorber and the top of the second adsorber are provided with second pipeline components, and the second pipeline components are sequentially provided with two second control switch valves and a first regulating valve in parallel from top to bottom.
Preferably, the second pipeline assembly is communicated with the normal pressure buffer tank through a third pipeline.
Preferably, the third pipeline is provided with an oxygen return regulating valve.
Preferably, a first emptying silencer is arranged between the pulse centrifugal blower and the heat exchanger, and a second emptying silencer is arranged between the centrifugal vacuum pump and the first pipeline component.
Preferably, an inlet silencer is arranged at the front end of the pulse centrifugal blower, and an inlet filter is arranged at the front end of the inlet silencer.
Preferably, the pulse centrifugal blower and the centrifugal vacuum pump are driven by a permanent magnet synchronous motor.
The beneficial effects are that: in the embodiment of the application, a mode of adding a pulse centrifugal blower and a centrifugal vacuum pump is adopted, the pulse centrifugal blower is driven to rotate through the first variable frequency motor, and the centrifugal vacuum pump is driven to act through the second variable frequency motor, so that the purposes of reducing low-frequency noise and reducing production cost are achieved, the technical effects of meeting the requirement of mass production are achieved, the problem that the existing Roots blower is designed from acoustic treatment is solved, high-frequency noise is easy to treat, but the low-frequency noise is difficult to treat, the heart and other physical problems of operators are easy to cause when the Roots blower is in a low-frequency noise environment for a long time, and the rotor is heavy and has high friction resistance, so that energy consumption is high when the Roots blower is operated; and limited by the current processing level, monomer equipment can not meet the technical problem of air volume requirement of large-scale equipment.
Drawings
FIG. 1 is a process flow diagram of a pressure swing adsorption oxygen plant of the present utility model.
The reference numerals are: 1. a first adsorber; 2. a second adsorber; 3. a first conduit assembly; 4. pulse centrifugal blower; 5. a first variable frequency motor; 6. a centrifugal vacuum pump; 7. a second variable frequency motor; 8. a heat exchanger; 9. a first control switching valve; 10. a second conduit assembly; 11. a second control switching valve; 12. a first regulating valve; 13. a third conduit; 14. a normal pressure buffer tank; 15. an oxygen return regulating valve; 16. a first emptying muffler; 17. a second emptying muffler; 18. an inlet muffler; 19. an inlet filter.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, the present application relates to a pressure swing adsorption oxygen plant. The pressure swing adsorption oxygen generating device comprises: a first adsorber 1; the first adsorber 1 is a device for gas-solid adsorption and desorption with an adsorbent. A second adsorber 2 disposed opposite to the first adsorber 1; effects of different functions can be achieved. Process air enters from the bottom of one of the adsorbers and, as it passes through the adsorbent layer, nitrogen, carbon dioxide, water vapor, etc. in the air are adsorbed. Oxygen is collected to the top of the absorber through the adsorption bed layer and is output as product gas. At the same time, the other adsorber is in a regeneration working condition, and when the adsorber for adsorption reaches adsorption saturation quickly, the process air is transferred to the regenerated adsorber to start adsorption to generate oxygen under the intervention of the control system. The two adsorbers alternately and alternately realize the purpose of continuously producing oxygen.
A first pipeline assembly 3 which is communicated with the bottoms of the first adsorber 1 and the second adsorber 2 respectively; good communication effect can be realized, thereby ensuring the smooth gas conveying effect. A pulse centrifugal blower 4 in communication with the first adsorber 1 through the first conduit assembly 3; the pulse centrifugal blower 4 is a centrifugal blower for generating positive pressure, and is mainly characterized in that gas is sucked from a gas inlet by rotation of an impeller and then discharged to a gas outlet by centrifugal force of the impeller, thereby generating a gas flow of a certain pressure. The working principle is as follows: when the impeller rotates, air entering the impeller is extruded and accelerated, and after reaching a certain speed, the air is discharged to the outlet of the impeller to form a high-speed air flow. Due to the inertia of air, the air flow in the rotation direction of the impeller can continue to move forward to form a pulse wave, and the energy of the pulse wave can be transmitted to the whole system, so that the efficiency and the performance of the whole system are improved. The first variable frequency motor 5 is electrically connected with the pulse centrifugal blower 4; a good electrical connection can be achieved, thus providing a basis for a good driving of the pulsed centrifugal blower 4.
A centrifugal vacuum pump 6 in communication with the second adsorber 2 through the first conduit assembly 3; a good directional flow effect of the gas can be achieved.
The second variable frequency motor 7 is electrically connected with the centrifugal vacuum pump 6; a good electrical connection effect can be achieved, thus providing a basis for a good driving of the centrifugal vacuum pump 6.
The first variable frequency motor 5 drives the pulse centrifugal blower 4 to rotate, and the second variable frequency motor 7 drives the centrifugal vacuum pump 6 to act. The corresponding adsorbers are driven to work by adopting a pulse centrifugal blower 4 and a centrifugal vacuum pump 6 respectively; meanwhile, a variable frequency motor is adopted to provide driving force, so that the effect of normal operation and working of the pulse centrifugal blower 4 and the centrifugal vacuum pump 6 is ensured. The fan pump can be kept to operate in a high-energy-efficiency interval, so that the oxygen production energy consumption is reduced; meanwhile, the surge phenomenon of the centrifugal fan is avoided, so that equipment is prevented from being damaged.
Specifically, raw material air is filtered by a filter to remove mechanical impurities, then enters a pulse centrifugal blower 4 for pressurization, is cooled by a heat exchanger 8, and pressurized air cooled to 30-40 ℃ enters an adsorber for adsorption separation to prepare oxygen-enriched gas; the nitrogen adsorbed by the adsorbent is vacuumized and pumped out by the centrifugal vacuum pump 6 to recover the adsorption capacity of the adsorbent, and the cycle is continuous and the period is very short (namely, one tower finishes the pressure boosting adsorption and the vacuum desorption time is only about 54 seconds).
From the above description, it can be seen that the following technical effects are achieved:
in the embodiment of the application, a mode of adding the pulse centrifugal blower 4 and the centrifugal vacuum pump 6 is adopted, the pulse centrifugal blower 4 is driven to rotate by the first variable frequency motor 5, and the centrifugal vacuum pump 6 is driven to act by the second variable frequency motor 7, so that the purposes of reducing low-frequency noise and reducing production cost are achieved, the technical effect of meeting the requirement of mass production is realized, the problem that the conventional Roots blower is designed from acoustic treatment is solved, although high-frequency noise is easy to treat, the low-frequency noise is difficult to treat, the physical problems such as hearts of operators are easy to cause in the low-frequency noise environment for a long time, and the Roots blower is heavy in weight and high in friction resistance and high in energy consumption when running; and limited by the current processing level, monomer equipment can not meet the technical problem of air volume requirement of large-scale equipment.
Further, a heat exchanger 8 is arranged between the pulse centrifugal blower 4 and the first pipe assembly 3. The effect of preprocessing the air can be realized, so that the subsequent process treatment is convenient.
Further, four first control switch valves 9 are disposed on the first pipe assembly 3, and the four first control switch valves 9 are disposed in a pair of two opposite directions. By arranging four first control switch valves 9, the flow velocity of the air flow entering the adsorber is controlled by utilizing the control regulating valve, so that the flow velocity is stable, and the stable operation of the oxygen generating device is ensured.
Further, a second pipeline assembly 10 is arranged at the top of the first adsorber 1 and the top of the second adsorber 2, and two second control switch valves 11 and a first regulating valve 12 are sequentially arranged in parallel from top to bottom in the second pipeline assembly 10. Good pipeline opening or closing effect can be achieved.
Further, the second pipe assembly 10 is in communication with an atmospheric buffer tank 14 through a third pipe 13. Good gas transmission effect can be realized, and meanwhile, the effect of gas buffering can be realized, so that the effect of gas safety emission is realized.
Further, the third pipeline 13 is provided with an oxygen return regulating valve 15; can realize good oxygen return adjusting effect.
Further, a first emptying silencer 16 is arranged between the pulse centrifugal blower 4 and the heat exchanger 8, and a second emptying silencer 17 is arranged between the centrifugal vacuum pump 6 and the first pipeline assembly 3; good silencing effect can be achieved.
Further, the front end of the pulse centrifugal blower 4 is provided with an inlet silencer 18, and the inlet silencing front end is provided with an inlet filter 19; good silencing and filtering effects on the gas can be achieved.
Further, the pulse centrifugal blower 4 and the centrifugal vacuum pump 6 are driven by adopting permanent magnet synchronous motors. The centrifugal blower or vacuum pump adopts permanent magnet synchronous motor direct drive, its impeller is equipped at the shaft end of motor main shaft, DV impeller outlet is equipped with adjustable guide vane, and the angle of blade is accurately controlled by servo motor. Meanwhile, in order to meet the requirements of the VPSA pressure swing adsorption oxygen production process, the centrifugal fan is provided with a frequency converter to quickly change the rotating speed of a frequency conversion motor to quickly adjust the exhaust gas quantity (or the suction gas quantity), so that the adsorption pressure (or the desorption pressure) quickly reaches the set pressure. And simultaneously, the angle of the adjustable guide vane blade is adjusted by using the servo motor to adjust the air quantity, so that the method is suitable for the pulse state of the VPSA process.
The utility model also has the following beneficial effects:
1. the structural characteristic of the pulse centrifugal blower has high rotating speed even exceeding 10000r/min, the running time is low in noise, and the noise is high-frequency noise at 95dB (A), and is easy to process to be below 85dB (A) through an acoustic principle.
2. Due to the structural characteristics, the vacuum degree of the centrifugal vacuum pump can reach-60 kPa (A) (the optimal vacuum degree required by the adsorbent desorption process) without adding sealing water, and the large Roots vacuum pump is limited by various factors (such as long-term thermal expansion of a rotor, low machining precision and the like) and sealing water is required to be added to reach the vacuum degree; and the sealing water is required to be desalted water, so that the production cost is high.
3. The pulse centrifugal blower can be directly hung on the shaft extension of the motor due to the small rotor and light weight, has small mechanical friction and high efficiency, and has 15-20 percent higher comprehensive efficiency than a Roots machine.
4. The pulse centrifugal blower has high rotating speed, and the equipment can be enlarged, so that the large-scale requirement of the VPSA oxygen production equipment can be met.
5. The impulse centrifugal blower has small volume, light weight and small vibration (about 2 mm/s), and has small influence on surrounding equipment; the vibration value of the Roots machine is larger, and the vibration value of the ZR8 series large-scale unit is generally more than 10 mm/s.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solutions of the present utility model within the scope of the technical concept of the present utility model, and these equivalent changes all fall within the scope of the present utility model.
Claims (8)
1. Pressure swing adsorption oxygenerator, its characterized in that includes:
a first adsorber;
a second adsorber disposed opposite to the first adsorber;
a first conduit assembly in communication with the bottoms of the first adsorber and the second adsorber, respectively;
a pulse centrifugal blower in communication with the first adsorber through the first conduit assembly;
the first variable frequency motor is electrically connected with the pulse centrifugal blower;
a centrifugal vacuum pump in communication with the second adsorber through the first conduit assembly; and
The second variable frequency motor is electrically connected with the centrifugal vacuum pump;
the first variable frequency motor drives the pulse centrifugal blower to rotate and move, and the second variable frequency motor drives the centrifugal vacuum pump to act;
the pulse centrifugal blower and the centrifugal vacuum pump are driven by a permanent magnet synchronous motor, impellers of the pulse centrifugal blower and the centrifugal vacuum pump are arranged at the shaft ends of main shafts of the motor, an adjustable guide vane is arranged at an outlet of the DV impeller, and the angles of the blades are accurately controlled by a servo motor.
2. The pressure swing adsorption oxygen plant of claim 1, wherein a heat exchanger is disposed between the pulse centrifugal blower and the first conduit assembly.
3. The pressure swing adsorption oxygen plant of claim 1, wherein four first control switch valves are provided on the first pipe assembly, and four first control switch valves are provided in pairs.
4. The pressure swing adsorption oxygen plant of claim 1, wherein the top of the first adsorber and the second adsorber is provided with a second pipeline assembly, and the second pipeline assembly is provided with two second control switch valves and a first regulating valve in parallel from top to bottom in sequence.
5. The pressure swing adsorption oxygen plant of claim 4, wherein the second conduit assembly is in communication with an atmospheric buffer tank via a third conduit.
6. The pressure swing adsorption oxygen plant of claim 5, wherein the third conduit is provided with an oxygen return regulator valve.
7. The pressure swing adsorption oxygen plant of claim 2, wherein a first venting muffler is disposed between the pulse centrifugal blower and the heat exchanger, and a second venting muffler is disposed between the centrifugal vacuum pump and the first conduit assembly.
8. The pressure swing adsorption oxygen plant of claim 1, wherein the pulse centrifugal blower is provided with an inlet silencer at a front end thereof, and an inlet filter at a front end thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321934729.7U CN220758600U (en) | 2023-07-21 | 2023-07-21 | Pressure swing adsorption oxygen generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321934729.7U CN220758600U (en) | 2023-07-21 | 2023-07-21 | Pressure swing adsorption oxygen generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220758600U true CN220758600U (en) | 2024-04-12 |
Family
ID=90597615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321934729.7U Active CN220758600U (en) | 2023-07-21 | 2023-07-21 | Pressure swing adsorption oxygen generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220758600U (en) |
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2023
- 2023-07-21 CN CN202321934729.7U patent/CN220758600U/en active Active
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