CN103438351A - BOG (Boil Off Gas) gas recovery device for liquefied natural gas filling station - Google Patents
BOG (Boil Off Gas) gas recovery device for liquefied natural gas filling station Download PDFInfo
- Publication number
- CN103438351A CN103438351A CN2013103820239A CN201310382023A CN103438351A CN 103438351 A CN103438351 A CN 103438351A CN 2013103820239 A CN2013103820239 A CN 2013103820239A CN 201310382023 A CN201310382023 A CN 201310382023A CN 103438351 A CN103438351 A CN 103438351A
- Authority
- CN
- China
- Prior art keywords
- valve
- bog
- liquefied natural
- gas
- natural gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a BOG (Boil Off Gas) gas recovery device for a liquefied natural gas filling station, wherein a low temperature emergency cut-off valve, a BOG carburetor, a low temperature stop valve, a reducing valve, a pressure gauge, a pressure transmitter, a thermometer, a temperature transmitter, a safety blow off valve and a check valve are sequentially connected at an inlet of a main pipeline. The low temperature stop valve is connected with a recuperator in parallel, and the reducing valve is connected with a bypass stop valve in parallel. The device further comprises a combustible gas alarm. The device provided by the invention has the beneficial effects that the device is energy-saving, simple in process, suitable for construction of gas stations, small in occupied area due to a skid mounted structure and low in cost. The pipeline made from a stainless steel material is low temperature resistant and corrosion resistant, and is provided with various monitoring devices, so that the safety performance is improved.
Description
Technical field
The invention belongs to the liquefied natural gas filling station equipment, particularly a kind of liquefied natural gas filling station BOG gas concentration unit.
Background technique
Rock gas is the emerging energy of clean and effective, the production of rock gas and use have tremendous development in China, with the obvious advantage because of it, LNG (LNG Liquefied natural gas) automobile is widely used at present, LNG (LNG Liquefied natural gas) automobile filling station large size is built, yet this type of filling station system can produce a large amount of BOG gas.BOG gas refers to the gas formed by after liquid natural gas gasification, and BOG is mainly derived from approximately 0.3% gasification naturally every day in LNG tank car return-air and LNG storage tank.This part BOG, as discharged not in time, can make the pressure in LNG storage tank upper gaseous phase space raise.
In prior art, BOG gas generally all discharges sky, or is processed by torch burning, causes the wasting of resources.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of liquefied natural gas filling station equipment, especially is applicable to the recovering device of liquefied natural gas filling station BOG gas.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of liquefied natural gas filling station BOG gas concentration unit is connected with low temperature Emergeny Cutoff Valves, BOG heat booster, cryogenic globe valve, reduction valve, pressure gauge, pressure transmitter, thermometer, temperature transmitter, Safety relief valve and safety check in turn in the ingress of main pipeline; Described cryogenic globe valve is parallel with a recuperator, and described reduction valve is parallel with a bypass stop valve; Also comprise a flammable gas alarm.
Further, described BOG heat booster is air temperature type BOG heat booster.
Further, described recuperator is the electrothermal water bath type recuperator.
Further, the import of described electrothermal water bath type recuperator and outlet respectively are provided with a valve.
Further, the two ends of described reduction valve respectively are provided with a valve.
Further, described pressure gauge is provided with a valve on the pipeline be connected with main pipeline.
Further, described pressure transmitter is provided with a valve on the pipeline be connected with main pipeline.
Further, described Safety relief valve is provided with a valve on the pipeline be connected with main pipeline.
Advantage and good effect that the present invention has are: owing to adopting technique scheme,
1, this device technique simple, be applicable to the gas station construction, floor space is little, cost is low.
2, in the device, pressure, temperature and flammable gas alarm etc. carry out automation control, guarantee safety in utilization.
3, the employing stainless steel that originally installs pipes is furnished with the electrothermal water bath type recuperator simultaneously, is applicable to the northern area use in winter.
4, with temperature, pressure is on-the-spot, show, with Safety relief valve assurance device safety.
5, outlet is provided with safety check, prevents that pipeline gas from refluxing.
The accompanying drawing explanation
Fig. 1 is the structural representation of the present embodiment
In figure:
1, low temperature Emergeny Cutoff Valves 2, air temperature type BOG heat booster 3, cryogenic globe valve
4, valve 5, bypass cutoff valve 6, pressure gauge
7, pressure transmitter 8, thermometer 9, temperature transmitter
10, Safety relief valve 11, safety check 12, flammable gas alarm
13, reduction valve 14, electrothermal water bath type recuperator 15, flange
Embodiment
As shown in Figure 1, the present embodiment is a kind of liquefied natural gas filling station BOG gas concentration unit, starts to be connected with in turn low temperature Emergeny Cutoff Valves 1, air temperature type BOG heat booster 2, cryogenic globe valve 3, reduction valve 13, pressure gauge 6, pressure transmitter 7, thermometer 8, temperature transmitter 9, Safety relief valve 10 and safety check 11 in the main pipeline ingress; Cryogenic globe valve 3 is parallel with an electrothermal water bath type recuperator 14, and reduction valve 13 is parallel with a bypass stop valve 5; Also comprise a flammable gas alarm 12.The import of electrothermal water bath type recuperator 14 and outlet respectively are provided with a valve 4.The two ends of reduction valve 13 respectively are provided with a valve 4.All respectively be provided with a valve 4 on the pipeline that pressure gauge 6, thermometer 8, Safety relief valve 10 are connected with main pipeline.
The working procedure of this example: BOG gas enters air temperature type BOG heat booster 2 by main pipeline, if the gas after heating does not reach temperature requirement, cryogenic globe valve 3 is closed, BOG gas enters electrothermal water bath type recuperator 14, according to water temperature and the start and stop of water level signal automatic control electrical heating rod, make water temperature and water level keep constant.BOG gas continues, by reduction valve 13, pressure gauge 6, pressure transmitter 7, thermometer 8, temperature transmitter 9, to carry out the monitoring of pressure, temperature, monitors qualified gas and is reclaimed by Safety relief valve 10 and safety check 11.
Occur can opening Safety relief valve 10 and carrying out diffusing of portion gas when dangerous when temperature or pressure exceed standard, guarantee the safety of package unit.The safety check 11 of main pipeline outlet, can prevent that pipeline gas from refluxing.Also include a flammable gas alarm 12 and play the monitoring effect.In device, the signal is far passeds such as pressure, temperature and flammable gas alarm 12 are to central control system, and any point numerical value exceeds standard, central control system automatic feedback signal cut device portal low temperature Emergeny Cutoff Valves 1, the safety of protection package unit.Air temperature type BOG heat booster 2 two ends are flexibly connected by flange 15 and main pipeline, are convenient to dismounting and repair and replacement.The bypass cutoff valve 5 in parallel with reduction valve 13 can cut out the rear dismounting maintenance of valve 4 at reduction valve 13 two ends when reduction valve 13 breaks down, and makes gas pass through main pipeline from bypass cutoff valve 5, do not affect the use of complete equipment.
This device technique is simple, be applicable to the gas station construction, adopts the skid-mounted structure, and floor space is little, and cost is low.Pipeline adopts stainless steel, low temperature resistant, anticorrosive, is furnished with multiple monitoring device in pipeline, has improved Safety performance.
Above one embodiment of the present of invention are had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variations of doing according to the present patent application scope and improvement etc., within all should still belonging to patent covering scope of the present invention.
Claims (8)
1. a liquefied natural gas filling station BOG gas concentration unit, it is characterized in that: the ingress on main pipeline is connected with low temperature Emergeny Cutoff Valves, BOG heat booster, cryogenic globe valve, reduction valve, pressure gauge, pressure transmitter, thermometer, temperature transmitter, Safety relief valve and safety check in turn; Described cryogenic globe valve is parallel with a recuperator, and described reduction valve is parallel with a bypass stop valve; Also comprise a flammable gas alarm.
2. liquefied natural gas filling according to claim 1 station BOG gas concentration unit, it is characterized in that: described BOG heat booster is air temperature type BOG heat booster.
3. liquefied natural gas filling according to claim 1 station BOG gas concentration unit, it is characterized in that: described recuperator is the electrothermal water bath type recuperator.
4. liquefied natural gas filling according to claim 3 station BOG gas concentration unit is characterized in that: the import of described electrothermal water bath type recuperator and outlet respectively are provided with a valve.
5. liquefied natural gas filling according to claim 1 station BOG gas concentration unit, it is characterized in that: the two ends of described reduction valve respectively are provided with a valve.
6. liquefied natural gas filling according to claim 1 station BOG gas concentration unit, it is characterized in that: described pressure gauge is provided with a valve on the pipeline be connected with main pipeline.
7. liquefied natural gas filling according to claim 1 station BOG gas concentration unit, it is characterized in that: described pressure transmitter is provided with a valve on the pipeline be connected with main pipeline.
8. liquefied natural gas filling according to claim 1 station BOG gas concentration unit, it is characterized in that: described Safety relief valve is provided with a valve on the pipeline be connected with main pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103820239A CN103438351A (en) | 2013-08-28 | 2013-08-28 | BOG (Boil Off Gas) gas recovery device for liquefied natural gas filling station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103820239A CN103438351A (en) | 2013-08-28 | 2013-08-28 | BOG (Boil Off Gas) gas recovery device for liquefied natural gas filling station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103438351A true CN103438351A (en) | 2013-12-11 |
Family
ID=49692053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103820239A Pending CN103438351A (en) | 2013-08-28 | 2013-08-28 | BOG (Boil Off Gas) gas recovery device for liquefied natural gas filling station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103438351A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524481A (en) * | 2021-02-07 | 2021-03-19 | 河南氢枫能源技术有限公司 | System for recovering vent gas of hydrogenation station |
| CN115638371A (en) * | 2022-10-14 | 2023-01-24 | 沪东中华造船(集团)有限公司 | Marine return-air decompression unit system of LNG filling and LNG filling ship |
-
2013
- 2013-08-28 CN CN2013103820239A patent/CN103438351A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112524481A (en) * | 2021-02-07 | 2021-03-19 | 河南氢枫能源技术有限公司 | System for recovering vent gas of hydrogenation station |
| CN112524481B (en) * | 2021-02-07 | 2021-06-01 | 河南氢枫能源技术有限公司 | System for recovering vent gas of hydrogenation station |
| CN115638371A (en) * | 2022-10-14 | 2023-01-24 | 沪东中华造船(集团)有限公司 | Marine return-air decompression unit system of LNG filling and LNG filling ship |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202203454U (en) | Positive and negative pressure water seal safety system for isolating waste gas | |
| CN203431496U (en) | BOG recovery device of liquefied natural gas filling station | |
| CN103438351A (en) | BOG (Boil Off Gas) gas recovery device for liquefied natural gas filling station | |
| CN103438354A (en) | Liquefied natural gas filling station BOG utilization system | |
| CN104654008A (en) | Recycle device for LNG (Liquefied Natural Gas) tank overpressure discharge and implementation method thereof | |
| CN103742786A (en) | Vehicle liquefied gas impact safety system | |
| CN103822093A (en) | Natural gas adsorptive recycling method for compressed natural gas station | |
| CN103822091A (en) | Natural gas recycling method for compressed natural gas stations | |
| CN103527929B (en) | A kind of flare gas recovery seal water system and method | |
| CN203686577U (en) | Liquefied gas and fuel gas impact safety system for vehicle | |
| CN203892872U (en) | LNG tank car BOG recovery system | |
| CN207145971U (en) | A kind of integrated LNG gasification sled | |
| CN203431497U (en) | BOG utilization system for liquefied natural gas refilling station | |
| CN104929580A (en) | Well flushing and wax removal vehicle and wax removal method thereof | |
| CN201318207Y (en) | Water washing tank with waterless protection function | |
| CN204005219U (en) | A kind of cryogenic gas condensate recovery system | |
| CN203927396U (en) | A kind of liquid oxygen storage tank flash steam recovering device | |
| CN202289722U (en) | Early warning oxygen filter | |
| CN203892875U (en) | Safety release and recovery system for liquefied coal-bed gas low-temperature pipeline | |
| CN215372068U (en) | Self-starting device for pressure pump in loss of pressure of pipeline | |
| CN204554354U (en) | A kind of recycle device for LNG gas tank overpressure relief | |
| CN204922503U (en) | Cold energy recovery unit and liquefied natural gas cold energy recovery system | |
| CN104616707A (en) | Boron injection system for second reactor shutdown system of research reactor | |
| CN204627797U (en) | A kind of gas electricity unit blending LNG fuel apparatus | |
| CN204778813U (en) | Can prevent hydrogen feeding mechanism of hydrogen supply discontinuity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131211 |