CN111649540B - Argon recovery method and system based on air separation system - Google Patents
Argon recovery method and system based on air separation system Download PDFInfo
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- CN111649540B CN111649540B CN202010478241.2A CN202010478241A CN111649540B CN 111649540 B CN111649540 B CN 111649540B CN 202010478241 A CN202010478241 A CN 202010478241A CN 111649540 B CN111649540 B CN 111649540B
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 title claims abstract description 512
- 229910052786 argon Inorganic materials 0.000 title claims abstract description 256
- 238000011084 recovery Methods 0.000 title claims abstract description 37
- 238000000926 separation method Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title abstract description 31
- 238000003860 storage Methods 0.000 claims abstract description 47
- 239000007789 gas Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000006200 vaporizer Substances 0.000 claims abstract description 29
- 238000010992 reflux Methods 0.000 claims description 11
- 238000009530 blood pressure measurement Methods 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 58
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 5
- 239000004576 sand Substances 0.000 abstract description 4
- 230000006837 decompression Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
- F25J3/04042—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of argon or argon enriched stream
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04642—Recovering noble gases from air
- F25J3/04648—Recovering noble gases from air argon
- F25J3/04721—Producing pure argon, e.g. recovered from a crude argon column
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/58—Argon
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to an argon recovery method and system, and provides an argon recovery method and system based on an air separation system, aiming at solving the technical problems that in the existing method for recovering liquid argon loss in the air separation system, a method for introducing liquid argon storage tank into a refined argon condenser for recycling by emptying, a cold box may need to be opened to remove sand and a pipe, the operation is complex, a method for adding a small heat exchanger at the lower part of the liquid argon storage tank needs to consume a large amount of liquid nitrogen, and the two methods cannot recover liquid argon cold pump liquid and tank car decompression argon, and the method comprises the following steps: the recovery method is that the argon in the emptying pipeline of the argon storage tank, the emptying pipeline of the tank car and the exhaust pipeline of the car filling exchange heat in the water bath type vaporizer and is stored in the argon buffer tank; after being compressed by an argon compressor, the argon is sent into an argon gas pipe network, wherein a series of interlocking controls are also arranged to ensure the stability of an argon recovery system and the safety of emptying a storage tank; the recycling system can implement the recycling method.
Description
Technical Field
The invention relates to an argon recovery method and an argon recovery system, and particularly provides an argon recovery method and an argon recovery system based on an air separation system.
Background
The liquid argon storage tank in the air separation system has large volume, the low-temperature liquid in the liquid argon storage tank is continuously evaporated, and in order to ensure the storage safety of the liquid argon storage tank, a gas emptying pipeline is arranged during design, so that the liquid argon storage tank has a certain pressure release channel, and the liquid argon storage tank is maintained in a safe pressure range. Due to the large volume of the hydraulic reservoir, considerable gains would be gained if this portion of argon could be considered for recovery. In addition, aiming at the whole air separation system, the cold pump loss in the liquid argon filling process is also a considerable part of liquid argon waste, and the method also comprises the emptying argon released by the liquid argon tank car.
At present, the following two methods are mainly used for recovering liquid argon:
(1) considering that the pressure of the liquid argon storage tank is between 14KPa and 18KPa, the liquid argon is discharged to the refined argon condenser for recycling so as to increase the yield of the liquid argon. According to the method, a cold box needs to be opened for sand raking and tubing, an additional gas lifting device is needed, the normal working condition of the air separation fine argon tower is affected, and liquid argon cold pump liquid cannot be recovered and argon is not released by a tank car;
(2) a small heat exchanger is added at the lower part of the liquid argon storage tank, liquid nitrogen is used as a cold source to liquefy the liquid argon, and refined argon is recovered. Although the measure is flexible, a large amount of liquid nitrogen and gas argon heat exchange are required to be lost, the equipment investment cost is high, and the scheme cannot recover liquid argon cold pump liquid and tank car decompression argon.
Disclosure of Invention
The invention provides an argon recovery method and system based on an air separation system, aiming at solving the technical problems that in the existing method for recovering hydraulic pressure of the air separation system, a method for introducing liquid argon to a refined argon condenser for recycling needs to open a cold box and remove sand and tubing, the operation is complex, a method for adding a small heat exchanger at the lower part of a liquid argon storage tank needs to consume a large amount of liquid nitrogen, and the two methods cannot recover liquid argon of a liquid argon cold pump and tank car decompression argon.
In order to achieve the purpose, the invention provides the following technical scheme:
the argon recovery method based on the air separation system is characterized by comprising the following steps of:
argon in an emptying pipeline of the argon storage tank, a tank car emptying gas pipeline and a car filling discharging gas pipeline exchanges heat through the water bath type vaporizer and is stored in an argon buffer tank; after being compressed by an argon compressor, the mixture is sent into an argon gas pipe network;
when the temperature of the gaseous argon at the outlet of the water bath type vaporizer is lower than 0 ℃, the argon compressor stops running; otherwise, the argon compressor continuously works;
when the pressure between the argon buffer tank and the inlet of the argon compressor is higher than a preset safety value, the gaseous argon at the outlet of the argon compressor flows back to the inlet of the argon compressor; otherwise, the gaseous argon at the outlet of the argon compressor is continuously sent into the argon gas pipe network. And meanwhile, a storage tank pressure safety chain is arranged, and when the pressure of the storage tank is lower than 5kpa, the argon compressor is stopped in a chain mode, so that the storage tank is ensured to be safely emptied.
Meanwhile, the invention also provides an argon recovery system based on the air separation system, so as to realize the argon recovery method based on the air separation system, and the argon recovery system is characterized by comprising a water bath type vaporizer, an argon buffer tank and an argon compressor which are sequentially communicated;
the coil pipe inlet of the water bath type vaporizer is simultaneously communicated with an emptying pipeline of an argon storage tank, a tank car emptying pipeline and a car charging exhaust pipeline;
a regulating valve, a first check valve and a first temperature measuring device are sequentially arranged between the emptying pipeline of the argon storage tank and the water bath type vaporizer;
a second temperature measuring device is arranged between the water bath type vaporizer and the argon buffer tank, and the second temperature measuring device is electrically connected with the argon compressor and used for controlling the working state of the argon compressor;
a first reflux valve is connected between the inlet and the outlet of the argon compressor;
a first pressure measuring device is arranged between the argon buffer tank and the argon compressor; the first pressure measuring device is electrically connected with the first reflux valve and is used for controlling the working state of the first reflux valve;
the outlet of the argon compressor is communicated with an argon pipe network; liquid argon in a vent pipeline of the argon storage tank, a tank car vent gas pipeline and a car filling vent gas pipeline is sent into an argon buffer tank after heat exchange of a water bath type vaporizer, and is compressed by an argon compressor and then sent to an argon gas pipe network.
Further, be equipped with second pressure measurement device on the argon buffer tank, argon buffer tank bottom still is provided with first blow-off valve. The second pressure measuring device and the first blow-off valve can be electrically connected to realize linkage and can also be manually operated.
Further, a fifth pressure measuring device and a flow measuring device are arranged between the argon compressor and the second blow-off valve.
Further, a second blow-off valve is arranged between the argon compressor and the argon gas pipe network and is positioned behind the fifth pressure measuring device.
Further, a second check valve is arranged between the argon compressor and the fifth pressure measuring device.
Compared with the prior art, the invention has the beneficial effects that:
1. the argon recovery method based on the air separation system can recover liquid argon in an argon storage tank, tank car emptying gas and car filling discharge gas, exchanges heat through the water bath type vaporizer, and is directly sent into an argon gas pipe network after being compressed by the argon gas compressor, so that the liquid argon at each position in the air separation system is effectively recycled, the utilization rate of the liquid argon in the air separation system is effectively improved, the production and processing cost is greatly saved, the operation is simple and convenient, and the implementation is easy; meanwhile, the recovery method is also provided with interlocking control to ensure that the liquid argon is efficiently and safely carried out in the recovery process, and when the temperature of the gaseous argon at the outlet of the water bath type vaporizer is lower than 0 ℃, which indicates that the water bath type vaporizer cannot be continued for a while, the argon compressor stops working to ensure the stable operation of the system; in addition, because the argon compressor has the minimum working flow, the argon compressor is ensured to work under the minimum flow load, whether the backflow from the outlet of the argon compressor to the inlet needs to be started or not is judged by monitoring the pressure between the argon buffer tank and the inlet of the argon compressor, and the safe, stable and efficient operation of the system is further ensured; meanwhile, a storage tank pressure safety chain is arranged, when the pressure of the storage tank is lower than a preset safety value, the argon compressor is stopped in a chain mode, and the storage tank is ensured to be safely emptied; the recovery method provided by the invention not only can fully recover the liquid argon at each position in the air compression system and improve the utilization rate of the liquid argon, but also can ensure safe and stable recovery under the conditions of matching with corresponding interlocking control, ensuring high utilization rate and saving production cost.
2. The invention relates to an argon recovery system based on an air separation system, wherein an emptying pipeline of an argon storage tank, a tank car emptying pipeline and a car filling exhaust pipeline are all connected with a coil of a water bath type vaporizer, liquid argon is introduced into the coil of the water bath type vaporizer, and the liquid argon is converted into gaseous argon through heat exchange. The regulating valve between the emptying pipeline of the argon storage tank and the water bath type vaporizer can regulate the amount of liquid argon to be recycled according to production requirements, the first check valve avoids backflow of the liquid argon and ensures safety, and the first temperature measuring device can monitor the temperature of the emptying liquid argon of the argon storage tank, can be matched with the second temperature measuring device and is used for monitoring the heat exchange effect of the water bath type vaporizer; the second temperature measuring device is electrically connected with the argon compressor, and the first pressure measuring device is electrically connected with the first reflux valve, so that the interlocking control of the whole system can be realized, and the safe and stable operation of the whole system is ensured; the treated gaseous argon is directly sent into an argon gas pipe network to be recycled to a user for use.
3. According to the invention, when the second pressure measuring device at the top of the first blow-off valve monitors that the pressure in the argon buffer tank is too high, the first blow-off valve releases the pressure, so that the argon buffer tank is ensured to maintain reasonable pressure, and the safety of the system is ensured.
4. According to the invention, the second pressure measuring device and the first blow-off valve can be arranged in a linkage manner, and when the pressure in the argon buffer tank is too high, the first blow-off valve is automatically started, so that the automation degree of the system is improved.
5. The neutralization flow measuring device can monitor the pressure and the flow of the gaseous argon to enter an argon gas pipe network.
6. The invention is also provided with a second blow-off valve, when the concentration or the pressure of the gaseous argon in the pipeline between the argon compressor and the argon gas pipe network is detected to be unsatisfactory, the gaseous argon can be discharged through the second blow-off valve in time, and the unsatisfactory gaseous argon is prevented from entering the argon gas pipe network.
7. The second check valve prevents gaseous argon from flowing back to the argon compressor, and further ensures the safety and stability of the system.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of an argon gas recovery system based on an air separation system (wherein, an arrow indicates a liquid argon flow direction).
Wherein, 1-a water bath vaporizer, 2-an argon buffer tank, 3-an argon compressor, 4-an argon storage tank, 5-a tank car, 6-a charging car, 7-a regulating valve, 8-a first check valve, 9-a first temperature measuring device, 10-an argon gas pipe network, 11-a second temperature measuring device, 12-a first pressure measuring device, 13-a first return valve, 14-a first blow-off valve, 15-a second blow-off valve, 16-a fifth pressure measuring device, 17-a flow measuring device, 18-a second check valve, 19-a second pressure measuring device, 20-a third pressure measuring device, 21-a manual valve, 22-a fourth pressure measuring device, 23-a compressor inlet valve, 24-an argon gas delivery valve, 25-an argon storage tank pressure regulating valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments do not limit the present invention.
The invention mainly discloses an argon recovery method and system based on an air separation system, wherein the recovery method comprises the following steps:
argon in the three positions of an emptying pipeline of the argon storage tank 4, an emptying pipeline of the tank car 5 and a discharge pipeline of the charging car 6 is sent to the water bath type vaporizer 1 for heat exchange, and the heat exchange principle of the water bath type vaporizer 1 is that liquid argon is in a coil pipe of the water bath type vaporizer 1, and water is outside the pipe for heat exchange. Gaseous argon gas after the heat transfer is deposited and is kept in argon buffer tank 2 temporarily to use when supplying the demand, after argon compressor 3 compression, directly send into argon gas pipe network 10 again.
Meanwhile, the recovery method of the invention also comprises two interlocking controls to ensure the recovery effect and the high-efficiency stability of the recovery process:
when the temperature of the gaseous argon at the outlet of the water bath type vaporizer 1 is lower than 0 ℃, the argon compressor 3 stops running; otherwise, the argon compressor 3 continuously works;
when the pressure between the argon buffer tank 2 and the inlet of the argon compressor 3 is higher than a preset safety value, the gaseous argon at the outlet of the argon compressor 3 flows back to the inlet of the argon compressor 3; otherwise, the gaseous argon at the outlet of the argon compressor 3 is continuously sent into the argon gas pipe network 10. The preset safety value can be set according to actual use requirements, and can be set to be 2KPa in the embodiment.
In addition, the invention also provides an argon recovery system based on the air separation system, and the recovery system can realize the recovery method. The argon storage tank 4 is generally provided with a vent line for evaporation of liquid argon therein to ensure that the internal pressure is maintained at a safe level. And a third pressure measuring device 20 and an argon storage tank pressure regulating valve 25 are sequentially arranged on a vent pipeline of the argon storage tank 4, and the pressure inside the argon storage tank 4 is regulated through the argon storage tank pressure regulating valve 25 according to the internal pressure of the argon storage tank 4 monitored by the third pressure measuring device 20.
The recovery system comprises a water bath type vaporizer 1, an argon buffer tank 2 and an argon compressor 3 which are sequentially communicated. Wherein, the coil pipe inlet of the water bath vaporizer 1 is simultaneously communicated with the vent pipeline of the argon storage tank 4, the vent pipeline of the tank car 5 and the vent pipeline of the charging car 6, and is used for exchanging heat for argon generated by natural evaporation from the argon storage tank 4, exchanging heat for liquid argon discharged in the pipeline after the charging car 6, and heating low-temperature argon discharged by the tank car 5 to generate normal-temperature argon; and the argon buffer tank 2 stores the argon after heat exchange, the argon is sent into an argon compressor 3 through a compressor inlet valve 23, and the argon is pressurized by the argon compressor 3 to the pressure required by a user and then sent to an argon gas pipe network 10 of the user for use.
Still set gradually governing valve 7, first check valve 8 and first temperature measuring device 9 between the blow-down pipeline of argon storage tank 4 and water bath vaporizer 1, governing valve 7 is used for adjusting the argon gas flow of argon storage tank 4 to water bath vaporizer 1, in addition, still be provided with manual valve 21 before governing valve 7 for manual processing under the emergency, simultaneously, be provided with fourth pressure measurement device 22 on the argon storage tank 4 for the real-time pressure in the monitoring argon storage tank 4, guarantee that the pressure in the argon storage tank 4 maintains in safety range.
A second temperature measuring device 11 is arranged between the water bath type vaporizer 1 and the argon buffer tank 2, and the second temperature measuring device 11 is electrically connected with the argon compressor 3 and used for controlling the working state of the argon compressor 3. If the temperature measured by the second temperature measuring device 11 is lower than 0 c, the operation of the argon compressor 3 is stopped. In a specific implementation aspect, a corresponding controller can be arranged on the second temperature measuring device 11 or the argon compressor 3, or a corresponding device with the controller can be directly purchased for temperature judgment.
A first reflux valve 13 is connected in parallel between an inlet and an outlet of the argon compressor 3, a first pressure measuring device 12 is arranged between the argon buffer tank 2 and the argon compressor 3, and the first pressure measuring device 12 is electrically connected with the first reflux valve 13 and used for controlling the working state of the first reflux valve 13; in a specific implementation, a corresponding controller may be provided on the first pressure measurement device 12 or the first reflux valve 13, or a corresponding device with a controller may be directly purchased for pressure judgment.
The outlet of the argon compressor 3 is communicated with the argon gas pipe network 10, and the argon gas pressurized by the argon compressor 3 can be directly sent into the argon gas pipe network 10 through the argon gas sending-out valve 24 for use by a user.
As preferred scheme, guarantee the safer and more stable operation of system, be equipped with second pressure measurement device 19 on the argon buffer tank 2, 2 bottoms of argon buffer tank are provided with first blow off valve 14, and second pressure measurement device 19 is used for detecting the pressure value in the argon buffer tank 2, if pressure is too high, the first 14 pressure release valves of blow off of accessible. The automatic linkage arrangement, i.e. the second pressure measuring device 19 being electrically connected to the first blow-off valve 14, can also be carried out manually.
In addition, in order to ensure that the argon pressure sent to the argon gas pipe network 10 is within the required range, a fifth pressure measuring device 16, a flow measuring device 17 and a second blow-off valve 15 are sequentially arranged between the argon gas compressor 3 and the argon gas pipe network 10, and when the pressure value or the concentration detected by the fifth pressure measuring device 16 is not in accordance with the user requirement range, the unsatisfactory argon gas can be directly discharged between the argon gas compressor 3 and the argon gas pipe network 10 through the second blow-off valve 15.
In order to prevent argon from flowing back to the argon compressor 3, a second check valve 18 is also provided between the argon compressor 3 and the fifth pressure measuring device 16.
The system recycles the liquid argon in the argon storage tank 4 due to the vaporized argon, the argon product gas-liquid mixture discharged in the process of filling 6 the cold pump and the argon produced by the liquid in the tank wagon 5 due to the vaporization, and the liquid argon is gasified and compressed and then sent to the argon gas pipe network 10 again. The scheme solves the problem that the traditional liquid argon recovery storage tank is emptied into a direct-connection cold box and needs low-temperature pipeline hole opening and a rectifying tower sand raking, and also abandons the high-cost mode of consuming a liquid nitrogen heat exchange mode. Meanwhile, the conventional liquid filling cold pump liquid of the air separation system and the emptying of the liquid tank car are all collected and utilized, so that the all-around collection of the emptying of argon is realized, the yield of liquid argon is improved, and the economic benefit is greatly increased.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (4)
1. The utility model provides an argon gas recovery system based on air separation system which characterized in that: comprises a water bath type vaporizer (1), an argon buffer tank (2) and an argon compressor (3) which are communicated in sequence;
the coil pipe inlet of the water bath type vaporizer (1) is simultaneously communicated with an emptying pipeline of the argon storage tank (4), an emptying pipeline of the tank car (5) and an exhaust pipeline of the charging car (6);
an adjusting valve (7), a first check valve (8) and a first temperature measuring device (9) are sequentially arranged between the emptying pipeline of the argon storage tank (4) and the water bath type vaporizer (1);
a second temperature measuring device (11) is arranged between the water bath type vaporizer (1) and the argon buffer tank (2), and the second temperature measuring device (11) is electrically connected with the argon compressor (3) and used for controlling the working state of the argon compressor (3);
a first reflux valve (13) is connected in parallel between the inlet and the outlet of the argon compressor (3);
a first pressure measuring device (12) is arranged between the argon buffer tank (2) and the argon compressor (3); the first pressure measuring device (12) is electrically connected with the first reflux valve (13) and is used for controlling the working state of the first reflux valve (13);
the outlet of the argon compressor (3) is communicated with an argon gas pipe network (10);
a second pressure measuring device (19) is arranged on the argon buffer tank (2), and a first blow-off valve (14) is arranged at the bottom of the argon buffer tank (2);
the second pressure measuring device (19) is electrically connected to the first purge valve (14).
2. An argon recovery system based on an air separation system as claimed in claim 1, characterized in that: and a fifth pressure measuring device (16) and a flow measuring device (17) are also arranged between the argon compressor (3) and the argon gas pipe network (10).
3. An argon recovery system based on an air separation system as claimed in claim 2, characterized in that: still be provided with second blow off valve (15) between argon gas compressor (3) and argon gas pipe network (10), second blow off valve (15) are located behind fifth pressure measurement device (16).
4. An argon recovery system based on an air separation system as claimed in claim 3, characterized in that: and a second check valve (18) is also arranged between the argon compressor (3) and the fifth pressure measuring device (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010478241.2A CN111649540B (en) | 2020-05-29 | 2020-05-29 | Argon recovery method and system based on air separation system |
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| CN202010478241.2A CN111649540B (en) | 2020-05-29 | 2020-05-29 | Argon recovery method and system based on air separation system |
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| CN111649540A CN111649540A (en) | 2020-09-11 |
| CN111649540B true CN111649540B (en) | 2022-04-15 |
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| CN114279166B (en) * | 2021-12-30 | 2024-07-30 | 乔治洛德方法研究和开发液化空气有限公司 | Method and device for evaporating argon in liquid argon storage tank and suitable low-temperature argon compressor |
| CN116983704B (en) * | 2023-09-27 | 2023-12-22 | 上海良薇机电工程有限公司 | Condensing device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201531745U (en) * | 2009-11-17 | 2010-07-21 | 南京钢铁股份有限公司 | Argon recovery device of low-temperature constant-pressure liquid argon storage tank |
| CN103672395A (en) * | 2013-11-15 | 2014-03-26 | 苏州金宏气体股份有限公司 | Method for recycling emptying residual gas of high purity gas transportation and storage tank |
| CN104197192A (en) * | 2014-08-19 | 2014-12-10 | 张志坚 | Argon recycling and filling device |
| CN205560278U (en) * | 2016-04-04 | 2016-09-07 | 鞍钢股份有限公司 | Diffused argon gas recovery device |
| CN206036650U (en) * | 2016-07-11 | 2017-03-22 | 安徽省化工设计院 | BOG's recovery unit in LNG filling station |
| CN107664258B (en) * | 2017-08-10 | 2019-07-23 | 吉林省华生燃气集团有限公司 | BOG gas recovery system in a kind of urban gate station |
| CN108730769A (en) * | 2018-06-14 | 2018-11-02 | 蚌埠艾普压缩机制造有限公司 | A kind of BOG is recycled to gas distributing system device |
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2020
- 2020-05-29 CN CN202010478241.2A patent/CN111649540B/en active Active
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