CN208535560U - Compressed gas recovery system in a kind of cryogenic liquid transport tank car - Google Patents
Compressed gas recovery system in a kind of cryogenic liquid transport tank car Download PDFInfo
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- CN208535560U CN208535560U CN201820784058.3U CN201820784058U CN208535560U CN 208535560 U CN208535560 U CN 208535560U CN 201820784058 U CN201820784058 U CN 201820784058U CN 208535560 U CN208535560 U CN 208535560U
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- heat exchanger
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- tank car
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Abstract
Compressed gas recovery system in a kind of cryogenic liquid transport tank car, it includes the tank car that a saving has liquid argon, liquid argon is delivered to installation locality, storage liquid argon storage tank tank by being filled mouth after transport by tank car, storage tank tank inlet is connected to a heat exchanger by liquid argon imported valve and liquid-filling pipe, fills nozzle with filling valve and connect with pipeline after the first heat exchanger channels of heat exchanger；The second heat exchanger channels of heat exchanger connect liquid nitrogen source by valve and pipe in succession, pass through the cooling liquid argon or the gentle argon mixed flow of liquid argon for passing through the first heat exchanger channels of liquid nitrogen in the second heat exchanger channels；The recovery method is: the mouth that fills of tank car is connected to recovery system, argon gas with pressure enters heat exchanger at this time, simultaneously, liquid nitrogen valve automatically turns on, liquid nitrogen is sent into the cooling argon gas of heat exchanger, in the process, the pressure of liquid nitrogen needed for being calculated according to the pressure gauge of argon gas, the pressure of nitrogen side is controlled by liquid nitrogen converter and liquid nitrogen inlet valve.
Description
Technical field
The utility model relates to compressed gas recovery systems in a kind of cryogenic liquid transport tank car, belong to cryogenic liquid transport
Technical field.
Background technique
With expanding economy recent years, domestic market increases liquid product demand, the valence of liquid oxygen, liquid argon product
Also when the river rises the boat goes up for lattice and demand.Frequently, liquid product, which is filled and transported also, becomes frequency for company's liquid product transportation dispatching and dealing
It is numerous.In order to reduce loss during transportation, need to find the effectively convenient and fast residual gas in method recycling tank car,
Reduce liquid transporting cost.Especially rare gas, unit price is higher, has to be vented remaining gas when transporting using tank car,
It is a kind of huge waste.
Utility model content
The purpose of the utility model is to overcome the shortcomings of the prior art, and provide a kind of energy saving, synergy, meet existing
In the policy of energy conservation, emission reduction, environmental protection, improves existing tank car and be largely vented compressed gas in the cryogenic liquid transport tank car of situation
Recovery system and recovery method.
The purpose of this utility model is completed by following technical solution, with pressure in a kind of cryogenic liquid transport tank car
Gas recovery system, it includes the tank car that a saving has liquid argon, and liquid argon is delivered to installation by being filled mouth after transport by tank car
Local, storage liquid argon storage tank tank, the storage tank tank inlet are connected to one by liquid argon imported valve and liquid-filling pipe and change
Hot device fills nozzle with filling valve and connect with pipeline after the first heat exchanger channels of heat exchanger；The heat exchanger second
Heat exchanger channels connect liquid nitrogen source by valve and pipe in succession, and cooling logical by the first heat exchange by the liquid nitrogen in the second heat exchanger channels
The gentle argon mixed flow of the liquid argon or liquid argon in road.
As preferred: the heat exchanger is shell side heat exchanger, and first heat exchanger channels are tube side channel, and second
Heat exchanger channels are shell side channel, and are provided with one between the tube side channel and storage tank tank and are connected to and fill the compressed gas of mouth and blow
Sweep pipeline.
A kind of recovery method using compressed gas recovery system in cryogenic liquid transport tank car, it is by tank car
It fills mouth and is connected to recovery system, argon gas with pressure enters heat exchanger at this time, and at the same time, liquid nitrogen valve automatically turns on, by liquid nitrogen
It is sent into the cooling argon gas of heat exchanger, in this process, the pressure of liquid nitrogen needed for need to being calculated according to the pressure gauge of argon gas, and pass through liquid
Nitrogen vaporizer and liquid nitrogen inlet valve control the pressure of nitrogen side, guarantee that the saturation temperature of liquid nitrogen is lower than the condensing temperature of liquid argon；With
Liquid argon constantly liquefy, the pressure of argon side constantly reduces, and needs constantly to adjust liquid nitrogen pressure at this time；Liquid argon is sent out valve and is passed through
Liquid level.
As preferred: before the tank car connection tank car, being purged first with compressed gas original in heat exchanger and storage tank
Pipeline；
When entire liquefaction is completed, the pressure reduction of liquid argon closes argon side entrance valve to 0.1-0.2MpaG, meanwhile, lead to
Liquid nitrogen converter and liquid nitrogen inlet valve are crossed, nitrogen lateral pressure is increased, so that the saturation temperature of liquid nitrogen is higher than the condensing temperature of liquid argon, reaches
To the purpose for stopping heat exchange, it will not continue to liquefy with the argon guaranteed in heat exchanger, avoid the occurrence of negative pressure；Finally close all entrances
Valve maintains the pressure and temperature in heat exchanger, to facilitate next use.
The utility model be using high values unstripped gas such as argon gas with pressure in the low values liquids recovery argon tank car such as liquid nitrogen,
Argon gas is further liquefied in heat exchanger by liquid nitrogen；Whole system, which needs to guarantee to control in the case where intermitten service by pressure, protects
Card unstrpped gas will not be contaminated；And whole flow process may be implemented to be fully automated control.
The utility model has energy conservation, synergy, meets the policy of present energy conservation, emission reduction, environmental protection, it is big to improve existing tank car
The features such as amount emptying situation.
Detailed description of the invention
Fig. 1 is the overall structure composition schematic diagram of the utility model.
Specific embodiment
Be described in detail below in conjunction with attached drawing to the utility model: shown in Fig. 1, one kind described in the utility model is low
Geothermal liquid transports compressed gas recovery system in tank car, it includes the tank car 1 that a saving has liquid argon, and tank car 1 after transport by passing through
Fill mouth 2 and liquid argon be delivered to installation is local, storage tank tank 3 of storage liquid argon, 3 inlet 4 of storage tank tank by liquid argon into
Mouth valve 5 and liquid-filling pipe 6 are connected to a heat exchanger 7, and pipeline 9 and filling valve are used after the first heat exchanger channels 8 of heat exchanger 7
10 connection of door fills nozzle 11；Second heat exchanger channels of heat exchanger 12 connect 14 connection liquid nitrogen sources 15 by valve 13 and pipe,
And pass through the cooling liquid argon or the gentle argon mixed flow of liquid argon for passing through the first heat exchanger channels 8 of liquid nitrogen in the second heat exchanger channels 12.
As preferred embodiment: heat exchanger 7 described in the utility model is shell side heat exchanger, and first heat exchange is logical
Road 8 is tube side channel, and the second heat exchanger channels 12 are shell side channel, and are provided with one between the tube side channel and storage tank tank
Connection fills the compressed gas purging pipeline of mouth.
A kind of recovery method using compressed gas recovery system in cryogenic liquid transport tank car, the recovery method
It is: the mouth 2 that fills of tank car 1 is connected to recovery system, argon gas with pressure enters heat exchanger 7 at this time, and at the same time, liquid nitrogen valve is certainly
It is dynamic to open, liquid nitrogen is sent into the cooling argon gas of heat exchanger 7, in this process, liquid nitrogen needed for need to calculating according to the pressure gauge of argon gas
Pressure, and control by liquid nitrogen converter and liquid nitrogen inlet valve the pressure of nitrogen side, guarantee the saturation temperature of liquid nitrogen lower than liquid
The condensing temperature of argon；As liquid argon constantly liquefies, the pressure of argon side is constantly reduced, and needs constantly to adjust liquid nitrogen pressure at this time；
Liquid argon sends out valve and passes through Liquid level.
As further preferred embodiment: before tank car connection tank car described in the utility model, first with heat exchanger
Pipeline is purged with compressed gas original in storage tank；
When entire liquefaction is completed, the pressure reduction of liquid argon closes argon side entrance valve to 0.1-0.2MpaG, meanwhile, lead to
Liquid nitrogen converter and liquid nitrogen inlet valve are crossed, nitrogen lateral pressure is increased, so that the saturation temperature of liquid nitrogen is higher than the condensing temperature of liquid argon, reaches
To the purpose for stopping heat exchange, it will not continue to liquefy with the argon guaranteed in heat exchanger, avoid the occurrence of negative pressure；Finally close all entrances
Valve maintains the pressure and temperature in heat exchanger, to facilitate next use.
The utility model is mainly that the cryogenic liquid of the lesser values such as liquid nitrogen is utilized to recycle the high value gas in tank car, argon
The high values compressed gas such as gas, by liquid nitrogen cooling liquid, is then sent into the process flow of storage tank in heat exchanger.
The heat exchange of the compressed gas such as heat exchanger and argon gas, the high added values gas such as argon gas are sent into after the low values liquid pressing such as liquid nitrogen
It is sent into storage tank after the cooled liquefaction of body, in whole process, the pressure of argon gas can constantly be reduced with the reduction of pressure in tank car,
Therefore, the pressure of liquid nitrogen is also required to adjust with the pressure according to argon side, and its purpose is to guarantee that it is enough that liquid nitrogen and argon gas have
Heat transfer temperature difference.
After the completion of liquefaction recycling, the pressure reduction of argon gas needs to reduce liquid nitrogen pressure in time at this time to 0.1 ~ 0.2MpaG
Power reduces the temperature difference of two sides, terminates heat exchange.If continuing heat exchanger, the pressure in tank car can continue to reduce or even reach
Negative pressure causes security risk.
Every time in use, needing purge system, guarantee that unstripped gas will not be polluted when pipe laying.
Claims (2)
1. compressed gas recovery system in a kind of cryogenic liquid transport tank car, it includes the tank car that a saving has liquid argon, and tank car is logical
It crosses after transport to be filled mouth for liquid argon and be delivered to and is mounted on local, storage liquid argon storage tank tank, it is characterised in that: the storage tank
Tank inlet is connected to a heat exchanger by liquid argon imported valve and liquid-filling pipe, uses after the first heat exchanger channels of heat exchanger
Pipeline fills nozzle with filling valve and connect；Second heat exchanger channels of heat exchanger connect liquid nitrogen source by valve and pipe in succession,
And pass through the cooling liquid argon or the gentle argon mixed flow of liquid argon for passing through the first heat exchanger channels of liquid nitrogen in the second heat exchanger channels.
2. compressed gas recovery system in cryogenic liquid transport tank car according to claim 1, it is characterised in that: described
Heat exchanger is shell side heat exchanger, and first heat exchanger channels are tube side channel, and the second heat exchanger channels are shell side channel, and institute
State be provided between tube side channel and storage tank tank one be connected to fill mouth compressed gas purging pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820784058.3U CN208535560U (en) | 2018-05-24 | 2018-05-24 | Compressed gas recovery system in a kind of cryogenic liquid transport tank car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820784058.3U CN208535560U (en) | 2018-05-24 | 2018-05-24 | Compressed gas recovery system in a kind of cryogenic liquid transport tank car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208535560U true CN208535560U (en) | 2019-02-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820784058.3U Active CN208535560U (en) | 2018-05-24 | 2018-05-24 | Compressed gas recovery system in a kind of cryogenic liquid transport tank car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208535560U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413245A (en) * | 2018-05-24 | 2018-08-17 | 浙江智海化工设备工程有限公司 | Compressed gas recovery system and recovery method in a kind of cryogenic liquid transport tank car |
| CN112066641A (en) * | 2020-09-25 | 2020-12-11 | 湖北浠水蓝天联合气体有限公司 | Tank car emptying oxygen, argon and nitrogen recovery system |
-
2018
- 2018-05-24 CN CN201820784058.3U patent/CN208535560U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413245A (en) * | 2018-05-24 | 2018-08-17 | 浙江智海化工设备工程有限公司 | Compressed gas recovery system and recovery method in a kind of cryogenic liquid transport tank car |
| CN112066641A (en) * | 2020-09-25 | 2020-12-11 | 湖北浠水蓝天联合气体有限公司 | Tank car emptying oxygen, argon and nitrogen recovery system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 280 Xingye Road, Leidian Town, Deqing County, Huzhou City, Zhejiang Province, 313219 Patentee after: Yingde Gas Engineering (Zhejiang) Co.,Ltd. Address before: 313219 Jingyi Road, Deqing Linhang Industrial Zone, LEIDIAN Town, Deqing County, Huzhou City, Zhejiang Province Patentee before: ZHEJIANG ZHIHAI CHEMICAL EQUIPMENT ENGINEERING Co.,Ltd. |
|
| CP03 | Change of name, title or address |