CN206191270U - Liquefied natural gas transfer post tank wagon evaporation gas recycle system - Google Patents
Liquefied natural gas transfer post tank wagon evaporation gas recycle system Download PDFInfo
- Publication number
- CN206191270U CN206191270U CN201621225834.3U CN201621225834U CN206191270U CN 206191270 U CN206191270 U CN 206191270U CN 201621225834 U CN201621225834 U CN 201621225834U CN 206191270 U CN206191270 U CN 206191270U
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- liquefied natural
- natural gas
- gas
- tank car
- boil
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Abstract
The utility model discloses a liquefied natural gas transfer post tank wagon evaporation gas recycle system, including transfer post tank wagon evaporation gas recovery unit and liquefied natural gas storage tank device, transfer post tank wagon evaporation gas recovery unit includes transfer post tank wagon and evaporation gas recovery unit, liquefied natural gas storage tank device includes liquefied natural gas storage tank, booster pump and liquefied natural gas vaporizer, the output of booster pump with be provided with the ejector between the entry of liquefied natural gas vaporizer, the output of booster pump with the ejection fluid entry of ejector links to each other, the export of ejector with the entry of liquefied natural gas vaporizer links to each other, just evaporation gas recovery unit's export with being linked to each other by the ejection fluid entry of ejector. Utilize the system to pass through the ejector, utilize high -pressure liquefied natural gas pressure energy to draw and penetrate the liquefied natural gas evaporation gas of retrieving low pressure, realize the purpose of low energy consumption recycle evaporation gas, and with low costs, flexible operation, energy -concerving and environment -protective.
Description
Technical field
The utility model is related to natural gas vaporization gas recycling field, and in particular to a kind of liquefied natural gas transhipment
Stand tank car boil-off gas recycling system.
Background technology
The need for the implementation of national clean energy resource policy and strategic reserves of energy, natural gas is used as one kind cleaning energy
Source, it is significant in terms of Environmental Safety and energy safeguard.LNG is the important form of natural gas penetration application, its conduct
A kind of high-quality, clean energy resource, shared proportion is increasing in disposable energy resource consumption.With coastal Large LNG receiving station
Construction and operation, the process problem of boil-off gas BOG is also increasingly subject to the attention of people.
At present, during the entrucking of LNG transfer stations tank car, to meet entrucking requirement, the BOG gases that it is unnecessary that tank car must release to
Constant-pressure, and pressure release is discharged generally in the form of being vented on the spot, this kind of mode does not only exist noise pollution and potential safety hazard, and
And waste of resource, pollute environment.Therefore, the BOG gases that cistern car decompression is produced are reclaimed, is imitated with important economic worth and environmental protection
Benefit.
The content of the invention
Deficiency of the purpose of this utility model aiming at above-mentioned technology, there is provided one kind reaches recovery natural gas vaporization
The liquefied natural gas transfer station tank car boil-off gas recycling system of gas, realizes making full use of for resource, so that it is dirty to reduce environment
Dye.
To achieve the above object, the liquefied natural gas transfer station tank car boil-off gas designed by the utility model recycle system
System, including transfer station tank car evaporation gas recovering device and LNG tank device, the transfer station tank car boil-off gas are reclaimed
Device includes transfer station tank car and the evaporation gas recovering device being connected with transfer station tank car liquid-phase outlet, the liquefied natural gas
Tank arrangement include the booster pump that LNG tank, input be connected with LNG tank liquid-phase outlet and entrance and
The connected liquefied natural gas gasifying device of supercharging pump output terminal, the output end of liquefied natural gas gasifying device is connected to naturally by pipeline
Gas pipe network；Injector, the increasing are provided between the entrance of the output end of the booster pump and the liquefied natural gas gasifying device
The output end of press pump is connected with the driving fluid entrance of the injector, the outlet of the injector and the liquefied natural gas gas
The entrance for changing device is connected, and the outlet of the evaporation gas recovering device is connected with the driven fluid entrance of the injector.
Further, the evaporation gas recovering device includes the evaporation that import is connected with the transfer station tank car liquid-phase outlet
The boil-off gas surge tank that gas collector unit and entrance are connected with boil-off gas collector unit outlet, the boil-off gas surge tank
Outlet is connected with the driven fluid entrance of the injector.
Further, the transfer station tank car include N number of tank car, N number of tank car with the evaporation gas recovering device
It is connected.
Compared with prior art, the utility model has advantages below：The utility model liquefied natural gas transfer station tank car
Boil-off gas recycling system reclaims the liquefied natural gas of low pressure using high-pressure liquefaction natural gas pressure energy injection by injector
Boil-off gas, realize low energy consumption recycle boil-off gas purpose, and low cost, operation flexibly, energy-conserving and environment-protective.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the utility model liquefied natural gas transfer station tank car boil-off gas recycling system.
Each part numbers are as follows in figure：
Transfer station tank car 1, boil-off gas collector unit 2, boil-off gas surge tank 3, LNG tank 4, booster pump 5, draw
Emitter 6, liquefied natural gas gasifying device 7.
Specific embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Liquefied natural gas transfer station tank car boil-off gas recycling system as shown in Figure 1, including the evaporation of transfer station tank car
Gas recovering device and LNG tank device.Transfer station tank car evaporation gas recovering device includes transfer station tank car 1 and evaporation
Gas recovering device, evaporation gas recovering device includes boil-off gas collector unit 2 and boil-off gas surge tank 3；LNG tank is filled
Put including LNG tank 4, booster pump 5 and liquefied natural gas gasifying device 7, and booster pump 5 and liquefied natural gas gasifying device 7
Between be provided with injector 6.
The liquid-phase outlet of transfer station tank car 1 is connected with the import of boil-off gas collector unit 2, and boil-off gas collector unit 2 goes out
Mouth is connected with the entrance of boil-off gas surge tank 3, and the outlet of boil-off gas surge tank 3 is connected with the driven fluid entrance of injector 6；
The liquid-phase outlet of LNG tank 4 is connected with the input of booster pump 5, the output end of booster pump 5 and the injection of injector 6
Fluid intake be connected, the outlet of injector 6 is connected with the entrance of liquefied natural gas gasifying device 7, liquefied natural gas gasifying device 7 it is defeated
Go out end and gas distributing system is connected to by pipeline.
By injector, the natural gas vaporization gas of low pressure is reclaimed using high-pressure liquefaction natural gas pressure energy injection, it is real
Existing low energy consumption recycles the purpose of boil-off gas, and the liquefied natural gas transfer station tank car boil-off gas recycling system equipment into
This low, operation is flexible, energy-conserving and environment-protective.
In addition, transfer station tank car can simultaneously include N number of tank car in the present embodiment, N number of tank car is reclaimed with boil-off gas and filled
Put connected, realize reclaiming simultaneously.
Claims (3)
1. a kind of liquefied natural gas transfer station tank car boil-off gas recycling system, including transfer station tank car evaporates gas recovering device
With LNG tank device, the transfer station tank car evaporates gas recovering device includes transfer station tank car (1) and and transfer station
The connected evaporation gas recovering device of tank car (1) liquid-phase outlet, the LNG tank device is stored up including liquefied natural gas
Booster pump (5) and entrance and booster pump (5) output end that tank (4), input are connected with LNG tank (4) liquid-phase outlet
Connected liquefied natural gas gasifying device (7), the output end of liquefied natural gas gasifying device (7) is connected to natural gas tube by pipeline
Net；It is characterized in that：It is provided between the output end of the booster pump (5) and the entrance of the liquefied natural gas gasifying device (7)
Injector (6), the output end of the booster pump (5) is connected with the driving fluid entrance of the injector (6), the injector
(6) outlet is connected with the entrance of the liquefied natural gas gasifying device (7), and it is described evaporation gas recovering device outlet with it is described
The driven fluid entrance of injector (6) is connected.
2. liquefied natural gas transfer station tank car boil-off gas recycling system according to claim 1, it is characterised in that：It is described
Boil-off gas collector unit (2) and enter that evaporation gas recovering device is connected including import with transfer station tank car (1) liquid-phase outlet
The boil-off gas surge tank (3) that mouth is connected with the boil-off gas collector unit (2) outlet, the outlet of the boil-off gas surge tank (3)
Driven fluid entrance with the injector (6) is connected.
3. liquefied natural gas transfer station tank car boil-off gas recycling system according to claim 1 or claim 2, it is characterised in that：
The transfer station tank car (1) includes N number of tank car, and N number of tank car is connected with the evaporation gas recovering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621225834.3U CN206191270U (en) | 2016-11-15 | 2016-11-15 | Liquefied natural gas transfer post tank wagon evaporation gas recycle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621225834.3U CN206191270U (en) | 2016-11-15 | 2016-11-15 | Liquefied natural gas transfer post tank wagon evaporation gas recycle system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206191270U true CN206191270U (en) | 2017-05-24 |
Family
ID=58725605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621225834.3U Active CN206191270U (en) | 2016-11-15 | 2016-11-15 | Liquefied natural gas transfer post tank wagon evaporation gas recycle system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206191270U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637359A (en) * | 2020-06-01 | 2020-09-08 | 中海石油气电集团有限责任公司 | Novel BOG re-condensation system and method for LNG receiving station |
-
2016
- 2016-11-15 CN CN201621225834.3U patent/CN206191270U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637359A (en) * | 2020-06-01 | 2020-09-08 | 中海石油气电集团有限责任公司 | Novel BOG re-condensation system and method for LNG receiving station |
| CN111637359B (en) * | 2020-06-01 | 2022-02-01 | 中海石油气电集团有限责任公司 | BOG re-condensation system and method for LNG receiving station |
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