CN207471122U - A kind of LNG gas stations BOG gas recovery systems - Google Patents
A kind of LNG gas stations BOG gas recovery systems Download PDFInfo
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- CN207471122U CN207471122U CN201721660877.9U CN201721660877U CN207471122U CN 207471122 U CN207471122 U CN 207471122U CN 201721660877 U CN201721660877 U CN 201721660877U CN 207471122 U CN207471122 U CN 207471122U
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- storage tank
- lng
- heat exchanger
- pipeline
- nitrogen storage
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Abstract
The utility model discloses a kind of LNG gas stations BOG gas recovery systems, including LNG storage tank, heat exchanger, liquid nitrogen storage tank and nitrogen storage tank, the top of LNG storage tank is connected by the shell side inlet of pipeline and heat exchanger, the shell-side outlet of heat exchanger is connected by pipeline with LNG storage tank, the tube-side inlet of heat exchanger is connected by the drain pipe of pipeline and liquid nitrogen storage tank, the tube side outlet of heat exchanger is connected by the air inlet pipe of pipeline and nitrogen storage tank, and the exhaust pipe of nitrogen storage tank is connected by the inlet tube of pipeline and liquid nitrogen storage tank.In LNG gas stations BOG gas recovery systems provided by the utility model, by the recycling of the nitrogen after heat exchanging and reuse, it is pumped into the high pressure for realizing liquid nitrogen, above-mentioned processing mode not only efficiently uses liquid nitrogen, while can also reduce the energy loss that liquid nitrogen is pumped into traditional design.
Description
Technical field
The utility model is related to a kind of recovery system more particularly to a kind of LNG gas stations BOG gas recovery systems.
Background technology
During LNG (i.e. liquefied natural gas) long-times, massive store, since the temperature of LNG is far below environment temperature
Degree, although taking high performance insulation to storage tank and pipeline, evaporation can not be absolutely avoided.LNG gas stations production fortune
During battalion, storage tank is generated with interior immersed pump work defeated outside pipeline leakage heat, the gas in tank car, the return-air in filling steel cylinder, LNG
Heat etc. can all generate BOG gases (flash gas).BOG gases cause the pressure of system to increase, this final part BOG gases
Energy waste must not be caused without diffusing.
Work is either directly compressed mainly using directly compression and recondensation process to the processing mode of BOG gases at present
Skill or recondensation process all suffer from the problems such as power consumption is big, accommodation is narrow, therefore, are badly in need of a set of low in energy consumption, adaptation of exploitation
Property strong and operation and control relatively convenient BOG gas recovery systems.
Utility model content
For the above problem existing for the recycling of existing BOG gases, a kind of good economy performance and safe LNG are now provided
Gas station BOG gas recovery systems.
Specific technical solution is as follows：
A kind of LNG gas stations BOG gas recovery systems, have the feature that, including LNG storage tank, heat exchanger, liquid nitrogen storage
Tank and nitrogen storage tank, the top of LNG storage tank are connected by the shell side inlet of pipeline and heat exchanger, and the shell-side outlet of heat exchanger passes through
Pipeline is connected with LNG storage tank, and the tube-side inlet of heat exchanger is connected by the drain pipe of pipeline and liquid nitrogen storage tank, the tube side of heat exchanger
Outlet is connected by the air inlet pipe of pipeline and nitrogen storage tank, and the exhaust pipe of nitrogen storage tank passes through pipeline and the inlet tube of liquid nitrogen storage tank
Connection.
Above-mentioned LNG gas stations BOG gas recovery systems, also have the feature that, the connection of LNG storage tank and heat exchanger
Pipeline is equipped with the first control valve, and the connecting pipe of liquid nitrogen storage tank and heat exchanger is equipped with the second control valve, nitrogen storage tank and liquid
The connecting pipe of nitrogen storage tank is equipped with third control valve.
Above-mentioned LNG gas stations BOG gas recovery systems, also have the feature that, LNG storage tank is equipped with first pressure
Sensor, first pressure sensor, the first control valve, the second control valve, third control valve are connect with controller signals.
Above-mentioned LNG gas stations BOG gas recovery systems, also have the feature that, nitrogen storage tank is equipped with the second pressure
Force snesor, second pressure sensor are connect with controller signals.
Above-mentioned LNG gas stations BOG gas recovery systems, also have the feature that, the company of nitrogen storage tank and heat exchanger
Take over road is equipped with transfer tube, and transfer tube is connect with controller signals.
The advantageous effect of said program is：
In LNG gas stations BOG gas recovery systems provided by the utility model, by the recycling of the nitrogen after heat exchanging simultaneously
It reuses, is pumped into the high pressure for realizing liquid nitrogen, above-mentioned processing mode not only efficiently uses liquid nitrogen, while can also reduce tradition and set
The energy loss that liquid nitrogen is pumped into meter.LNG gas stations BOG gas recovery systems provided by the utility model have energy utilization rate
Height, good economy performance, it is safe the characteristics of.
Description of the drawings
Fig. 1 is the structure diagram of LNG gas stations BOG gas recovery systems provided in the embodiment of the utility model.
In attached drawing：1st, LNG storage tank；2nd, heat exchanger；3rd, liquid nitrogen storage tank；4th, nitrogen storage tank；5th, the first control valve；6th, the second control
Valve processed；7th, third control valve；8th, first pressure sensor；9th, second pressure sensor；10th, transfer tube.
Specific embodiment
The technical scheme in the embodiment of the utility model is carried out below in conjunction with the utility model embodiment clear, complete
Ground describes, it is clear that the described embodiments are only a part of the embodiments of the utility model, instead of all the embodiments.Base
Embodiment in the utility model, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the utility model can
To be combined with each other.
With reference to specific embodiment, the utility model is described in further detail, but is not intended to limit the present utility model.
Fig. 1 is the structure diagram of LNG gas stations BOG gas recovery systems provided in the embodiment of the utility model.Such as Fig. 1 institutes
Show, the LNG gas stations BOG gas recovery systems provided in the embodiment of the utility model, including LNG storage tank 1, heat exchanger 2, liquid
Nitrogen storage tank 3 and nitrogen storage tank 4, the top of LNG storage tank 1 are connect by pipeline with the shell side inlet of heat exchanger 2, the shell of heat exchanger 2
Journey outlet is connected by pipeline with LNG storage tank 1, and the tube-side inlet of heat exchanger 2 is connected by the drain pipe of pipeline and liquid nitrogen storage tank 3
It connects, the tube side outlet of heat exchanger 2 is connect by pipeline with the air inlet pipe of nitrogen storage tank 4, and the exhaust pipe of nitrogen storage tank 4 passes through pipeline
It is connect with the inlet tube of liquid nitrogen storage tank 3.
By setting nitrogen storage tank 4 in the present embodiment, the nitrogen generated after exchanging heat is recycled through nitrogen storage tank 4；It uses
When, the gas in nitrogen storage tank 4 is pumped into liquid nitrogen storage tank 3, is changed with being pumped into the liquid nitrogen in liquid nitrogen storage tank 4 using nitrogen pressure
(liquid nitrogen, which is pumped into heat exchanger 2, in the form of partial pressure can also reduce transfer tube on this pipeline with BOG gas converting heats in hot device 2
Setting), the BOG liquefied gas after heat exchange is pumped into again in LNG storage tank 1, and the nitrogen formed after heat exchange by liquid nitrogen can be by nitrogen storage
Tank 4 recycles again.By setting nitrogen storage tank 4 in the present embodiment, to realize recycling for nitrogen, effectively save resource must
When wanting, gas can obtain liquid nitrogen after liquefying again in nitrogen storage tank 4, and be pumped into again in liquid nitrogen storage tank 3, and aforesaid operations are opposite
The form of export for being directly vented the nitrogen after heat exchange in conventionally form can greatly save nitrogen.
In addition, in recovery system provided in this embodiment, the connecting pipe of LNG storage tank 1 and heat exchanger 2 is equipped with the first control
The connecting pipe of valve 5 processed, liquid nitrogen storage tank 3 and heat exchanger 2 is equipped with the second control valve 6, the company of nitrogen storage tank 4 and liquid nitrogen storage tank 3
Take over road is equipped with third control valve 7, by setting corresponding control valve to control the open and close of corresponding tank body in the present embodiment.
Further, in recovery system provided in this embodiment, LNG storage tank 1 be equipped with first pressure sensor 8, first
Pressure sensor 8, the first control valve 5, the second control valve 6, third control valve 7 are connect with controller signals；Meanwhile nitrogen storage
Tank 4 is equipped with second pressure sensor 9, and second pressure sensor 9 connect with controller signals, by setting the in the present embodiment
One pressure sensor 8 and second pressure sensor 9, to control the unlatching of respective valves by controller in real time, to automate control
The recycling of BOG gases processed.
Further, in recovery system provided in this embodiment, nitrogen storage tank 4 and the connecting pipe of heat exchanger 2 are equipped with
Transfer tube 10, transfer tube 10 are connect with controller signals, and the gaseous nitrogen atmosphere stored in nitrogen storage tank 4 is mainly utilized in the present embodiment
The liquid nitrogen in liquid nitrogen storage tank 3 is oppressed, so that liquid nitrogen is pumped into heat exchanger 2, correspondingly, the nitrogen generated after recycling heat exchange for convenience
Gas, admittedly there is provided this transfer tubes.
It these are only the utility model preferred embodiment, not thereby limit the embodiment and protection of the utility model
Range to those skilled in the art, should can appreciate that all with made by the utility model description
Equivalent replacement and obviously change obtained scheme, should all include within the protection scope of the present utility model.
Claims (5)
1. a kind of LNG gas stations BOG gas recovery systems, which is characterized in that including LNG storage tank (1), heat exchanger (2), liquid nitrogen storage
Tank (3) and nitrogen storage tank (4), the top of the LNG storage tank (1) are connect by pipeline with the shell side inlet of the heat exchanger (2),
The shell-side outlet of the heat exchanger (2) is connected by pipeline with the LNG storage tank (1), and the tube-side inlet of the heat exchanger (2) leads to
Piping is connect with the drain pipe of the liquid nitrogen storage tank (3), and the tube side outlet of the heat exchanger (2) passes through pipeline and the nitrogen
The air inlet pipe connection of storage tank (4), the exhaust pipe of the nitrogen storage tank (4) pass through pipeline and the inlet tube of the liquid nitrogen storage tank (3)
Connection.
2. LNG gas stations BOG gas recovery systems according to claim 1, which is characterized in that the LNG storage tank (1) with
Pipeline between the heat exchanger (2) is equipped with the first control valve (5), between the liquid nitrogen storage tank (3) and the heat exchanger (2)
Pipeline be equipped with the second control valve (6), pipeline between the nitrogen storage tank (4) and the liquid nitrogen storage tank (3) is equipped with the
Three control valves (7).
3. LNG gas stations BOG gas recovery systems according to claim 2, which is characterized in that on the LNG storage tank (1)
Equipped with first pressure sensor (8), the first pressure sensor (8), first control valve (5), second control valve
(6), the third control valve (7) connect with controller signals.
4. LNG gas stations BOG gas recovery systems according to claim 3, which is characterized in that the nitrogen storage tank (4)
Second pressure sensor (9) is equipped with, the second pressure sensor (9) connect with the controller signals.
5. the LNG gas stations BOG gas recovery systems according to Claims 2 or 3, which is characterized in that the nitrogen storage tank
(4) pipeline between the heat exchanger (2) is equipped with transfer tube (10), and the transfer tube (10) connects with the controller signals
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721660877.9U CN207471122U (en) | 2017-11-30 | 2017-11-30 | A kind of LNG gas stations BOG gas recovery systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721660877.9U CN207471122U (en) | 2017-11-30 | 2017-11-30 | A kind of LNG gas stations BOG gas recovery systems |
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| Publication Number | Publication Date |
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| CN207471122U true CN207471122U (en) | 2018-06-08 |
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| CN201721660877.9U Active CN207471122U (en) | 2017-11-30 | 2017-11-30 | A kind of LNG gas stations BOG gas recovery systems |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870867A (en) * | 2018-09-05 | 2018-11-23 | 上海宝钢气体有限公司 | A kind of liquefying plant and its application method using liquid nitrogen high efficiente callback high value residual air |
| CN112272768A (en) * | 2018-06-08 | 2021-01-26 | 欧姆龙株式会社 | Micro-hotplate and MEMS gas sensor |
| CN113446514A (en) * | 2021-06-26 | 2021-09-28 | 江苏锐深化工机械科技有限公司 | Flash evaporation gas liquefaction recovery system and method |
-
2017
- 2017-11-30 CN CN201721660877.9U patent/CN207471122U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112272768A (en) * | 2018-06-08 | 2021-01-26 | 欧姆龙株式会社 | Micro-hotplate and MEMS gas sensor |
| CN108870867A (en) * | 2018-09-05 | 2018-11-23 | 上海宝钢气体有限公司 | A kind of liquefying plant and its application method using liquid nitrogen high efficiente callback high value residual air |
| CN113446514A (en) * | 2021-06-26 | 2021-09-28 | 江苏锐深化工机械科技有限公司 | Flash evaporation gas liquefaction recovery system and method |
| CN113446514B (en) * | 2021-06-26 | 2022-03-11 | 江苏锐深化工机械科技有限公司 | Flash evaporation gas liquefaction recovery system and method |
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