CN203131417U - Skid-mounted type self-powered LNG (liquefied natural gas) filling station with BOG (boiled off gas) recovery function - Google Patents
Skid-mounted type self-powered LNG (liquefied natural gas) filling station with BOG (boiled off gas) recovery function Download PDFInfo
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- CN203131417U CN203131417U CN 201320110723 CN201320110723U CN203131417U CN 203131417 U CN203131417 U CN 203131417U CN 201320110723 CN201320110723 CN 201320110723 CN 201320110723 U CN201320110723 U CN 201320110723U CN 203131417 U CN203131417 U CN 203131417U
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Abstract
The utility model discloses a skid-mounted type self-powered LNG (liquefied natural gas) filling station with a BOG (boiled of gas) recovery function. The skid-mounted type self-powered LNG filling station comprises an LNG low-temperature storage tank, an LNG immersed pump, an LNG gas filling machine, an EAG (escape air gas) gasifier, a BOG heater, a BOG heating pressure-stabilizing device, a natural gas generator set and an automatic control system. By adopting the skid-mounted type self-powered LNG filling station, the BOG generated by the low-temperature storage tank can be recovered for generating electricity, and then the generated electric energy is used for providing electric energy and heat for the LNG filling station and other electric facilities, so that the recycling of BOG residual gas is realized, and the aims of energy saving and environmental protection are achieved.
Description
Technical field
The present invention relates to the LNG Liquefied natural gas LNG BOG of gas station and reclaim the field, relate in particular to the skid-mounted self-powered LNG gas station that a kind of BOG of having reclaims function.
Background technique
LNG compares with diesel oil as vehicle fuel, and it is long to have a continual mileage, good economy performance, and advantages such as cleanliness without any pollution have begun to use on a large scale at home.Because the LNG low-temperature characteristics, the condition of storage of LNG has been proposed very high requirement, LNG store and the operation process in, have partial L NG evaporation, produce flash steam (being BOG).When overpressure, for guaranteeing the safety of low-temperature storage tank, general BOG can discharge sky.BOG is that the rock gas of high-quality causes energy waste to sky discharging, and BOG gas has very strong greenhouse effect, and environment is damaged.The production of BOG is relevant with multiple factors such as gas temperature, condition of storage, service time, modes of operation, and the operation of LNG gas station is caused certain influence and restriction.
Domestic recycling for BOG at present has following several:
1, by technology in standing or come gas that BOG is liquefied again;
2, in the LCNG gas station, utilize a cover BOG compressor, BOG is heated and compress, form that CNG stores and be used for to the vehicle aerating;
3, BOG is squeezed into gas pipeline or use for gas station life nearby.。
All have significant limitation with upper type, have only under given conditions and could reclaim with compensation BOG.At present domestic a lot of LNG gas station LNG skid station especially all is directly BOG to be carried out the technology emptying process, has namely caused very big environmental pollution, has increased the unsafe factor in the station, also has very big waste economically.
At present domestic LNG main users is city bus, long-distance passenger transportation vehicle, has the long haul vehicle of route and a haulage vehicle in coalfield, mine, user demand at above vehicle, some LNG station need be built remote area such as expressway or coalfield, mine etc. in, standing to distinguish connects relatively difficulty of electricity, has limited the construction of gas station.
Summary of the invention
The invention provides the skid-mounted self-powered LNG gas station that a kind of BOG of having reclaims function, BOG is reclaimed generate electricity, supply whole gas station or peripheral need for electricity, gas station connects electricity difficulty and the unserviceable problem of BOG in the background technique to solve.
For achieving the above object, the invention provides following technological scheme:
A kind of skid-mounted LNG Liquefied natural gas LNG gas station with BOG recovery function, comprise the LNG of LNG liquid gas is provided low-temperature storage tank, the LNG immersed pump, be used for providing the LNG filling machine of LNG gas to the LNG automobile, and the automatic control system of monitoring each pipeline BOG gas and power supply mode switching, the LNG low-temperature storage tank links to each other with the LNG immersed pump, the LNG immersed pump connects the LNG filling machine, the LNG low-temperature storage tank connects EAG and concentrates the EAG vaporizer that diffuses, it is characterized in that: described LNG low-temperature storage tank also connects the BOG heater, after the BOG after the heating of BOG heater is by BOG heating stable-pressure device heating voltage stabilizing, supplying with the natural gas power unit generates electricity, the natural gas power unit is the power supply of LNG immersed pump by power transmission cable, and described automatic control system includes the PLC automatical control system.
Described BOG heating stable-pressure device comprises knock out drum, pressure regulator valve, flowmeter and the flow control valve that is linked in sequence, and the PLC automatical control system is controlled it.
Described PLC automatical control system is the part of described automatic control system for carrying out the automatical control system of automatic speed regulation and voltage regulation function and automatic power switching function.
LNG low-temperature storage tank, LNG immersed pump and LNG filling machine place on the same sledge body.
Described BOG heater is empty bath formula heater.
Described BOG heater carries out heat exchange by heat exchange pond and the interconnection of natural gas power unit, makes the generator waste heat provide energy for the heat exchange pond.
Described automatic control system comprises some pressure transducers, temperature transducer and flowmeter.
Described natural gas generator is the generator that is applicable to pressure surge and change in concentration.
This skid mounted equipment has following characteristics:
(1) highly integrated, integrated design, floor space is little;
(2) need not on-the-spot the installation, come into operation at once;
(3) transportation and transfer are convenient in skid design, have good mobility.The particularly suitable field operation environment is convenient to the user and is selected better to run the position at any time;
(4) electric instrument system adopts explosion-proof design, and is safe and reliable.Adopt the PLC Automatic Control, man-machine interface is good, and is easy to operate;
(5) process pipelines is short, and pre-cool time is short, and filling speed is fast;
(6) the BOG gas to the station effectively reclaims, and cuts operating costs, and reduces environmental pollution;
(7) dispense with outer connecting power adopts gas electricity generator to provide power supply for the station, can build the station in the wilderness field, and adaptability is strong.
Description of drawings
Fig. 1 the utlity model has the skid-mounted self-powered gas station structural representation that BOG reclaims function.
Embodiment
Below in conjunction with accompanying drawing the skid-mounted self-powered LNG gas station that the present invention has BOG recovery function is described further.
The groundwork process of LNG gas station be with the liquid in the LNG low-temperature storage tank after low temperature immersed pump pressurization, be delivered to the LNG filling machine by vacuum pipeline, through annotating to the vehicle-mounted air cylinder of LNG automobile after the metering.
The design adopts skid-mounted, is about to low-temperature storage tank, boosting vaporizer, vacuum pipe, control valve, low temperature immersed pump and pump pond, loading system and control system etc. and installs concentratedly on same sledge piece; Reclaim BOG supply natural gas generator simultaneously and provide power supply for the station, reach BOG residual air and recycle, realize thermoelectric cold triple supply.
Embodiment is:
A kind of skid-mounted LNG Liquefied natural gas LNG gas station with BOG recovery function, comprise the LNG of LNG liquid gas is provided low-temperature storage tank, the LNG immersed pump, be used for providing the LNG filling machine of LNG gas to the LNG automobile, and the automatic control system of monitoring each pipeline BOG gas and power supply mode switching, the LNG low-temperature storage tank links to each other with the LNG immersed pump, the LNG immersed pump connects the LNG filling machine, the LNG low-temperature storage tank connects EAG and concentrates the EAG vaporizer that diffuses, it is characterized in that: described LNG low-temperature storage tank also connects the BOG heater, after the BOG after the heating of BOG heater is by BOG heating stable-pressure device heating voltage stabilizing, supply with the natural gas power unit and generate electricity, the natural gas power unit is the power supply of LNG immersed pump by power transmission cable.
Described BOG heating stable-pressure device comprises knock out drum, pressure regulator valve, flowmeter and the flow control valve that is linked in sequence, and the PLC automatical control system is controlled it.
Described PLC automatical control system is the part of described automatic control system for carrying out the automatical control system of automatic speed regulation and voltage regulation function and automatic power switching function.
LNG low-temperature storage tank, LNG immersed pump and LNG filling machine place on the same sledge body.
Described BOG heater is empty bath formula heater.
Described BOG heater carries out heat exchange by heat exchange pond and the interconnection of natural gas power unit, makes the generator waste heat provide energy for the heat exchange pond.
Described automatic control system comprises some pressure transducers, temperature transducer and flowmeter.
Described natural gas generator is the generator that is applicable to pressure surge and change in concentration.
BOG generator continuous service can reach rated power output.
Application example:
A newly-built 50KW gas electricity generator in the station is considered mobility, sets up a gas electricity generator sledge separately, utilizes BOG gas to act as a fuel and generates electricity, and the electricity consumption in satisfying that gas station is whole and runing, uses heat demand.
Press power consumption 336 degree of gas station every day, every side's gas 2.9 degree that can generate electricity consider, every day BOG effectively to reclaim tolerance be 116 sides, annual effectively recovery rock gas 41760 sides.
If there is need for electricity in periphery, can be with the BOG generating to the periphery power supply, generator is considered power load by 100% continuous rating, air consumption hourly is 13.2 sides, by moving calculating in 24 hours every day, every day, usefulness gas 316 sides annually effectively reclaimed about BOG11.5 ten thousand sides; If peripheral need for electricity is bigger, generator power can be increased in order to reclaim more BOG.
Press 3 yuan of BOG costs/side and consider, every side's gas generating 2.9 degree, the cost of every degree electricity is 1.03 yuan; Higher about 0.2 yuan than the average electricity price of commercial power, be lower than peak electricity consumption electricity price.
About 150,000 yuan of the initial investments of every gas electricity generator can realize about 100,000 yuan of incomes every year, have good economic benefits and environmental protection demand.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (8)
1. one kind has the skid-mounted self-powered LNG gas station that BOG reclaims function, comprise the LNG of LNG liquid gas is provided low-temperature storage tank, the LNG immersed pump, be used for providing the LNG filling machine of LNG gas to the LNG automobile, and the automatic control system of monitoring each pipeline BOG gas and power supply mode switching, the LNG low-temperature storage tank links to each other with the LNG immersed pump, the LNG immersed pump connects the LNG filling machine, the LNG low-temperature storage tank connects EAG and concentrates the EAG vaporizer that diffuses, it is characterized in that: described LNG low-temperature storage tank also connects the BOG heater, after the BOG after the heating of BOG heater is by BOG heating stable-pressure device heating voltage stabilizing, supplying with the natural gas power unit generates electricity, the natural gas power unit is the power supply of LNG immersed pump by power transmission cable, and described automatic control system includes the PLC automatical control system.
2. as claimed in claim 1 have a skid-mounted self-powered LNG gas station that BOG reclaims function, it is characterized in that: described BOG heating stable-pressure device comprises knock out drum, pressure regulator valve, flowmeter and the flow control valve that is linked in sequence, and the PLC automatical control system is controlled it.
3. as claimed in claim 2 have a skid-mounted self-powered LNG gas station that BOG reclaims function, and it is characterized in that: described PLC automatical control system is for carrying out the automatical control system of automatic speed regulation and voltage regulation function and automatic power switching function.
4. as the described skid-mounted self-powered LNG gas station with BOG recovery function of one of claim 1-3, it is characterized in that: LNG low-temperature storage tank, LNG immersed pump and LNG filling machine place on the same sledge body.
5. as the described skid-mounted self-powered LNG gas station with BOG recovery function of one of claim 1-3, it is characterized in that: described BOG heater is empty bath formula heater.
6. as the described skid-mounted self-powered LNG gas station with BOG recovery function of one of claim 1-3, it is characterized in that: described BOG heater carries out heat exchange by heat exchange pond and the interconnection of natural gas power unit, makes the generator waste heat provide energy for the heat exchange pond.
7. as the described skid-mounted self-powered LNG gas station with BOG recovery function of one of claim 1-3, it is characterized in that: described automatic control system also comprises some pressure transducers, temperature transducer and flowmeter.
8. as the described skid-mounted self-powered LNG gas station with BOG recovery function of one of claim 1-3, it is characterized in that described natural gas generator is the generator that is applicable to pressure surge and change in concentration.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320110723 CN203131417U (en) | 2013-03-12 | 2013-03-12 | Skid-mounted type self-powered LNG (liquefied natural gas) filling station with BOG (boiled off gas) recovery function |
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| CN 201320110723 CN203131417U (en) | 2013-03-12 | 2013-03-12 | Skid-mounted type self-powered LNG (liquefied natural gas) filling station with BOG (boiled off gas) recovery function |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822091A (en) * | 2013-10-18 | 2014-05-28 | 中国石油化工股份有限公司 | Natural gas recycling method for compressed natural gas stations |
| CN103822094A (en) * | 2013-10-18 | 2014-05-28 | 中国石油化工股份有限公司 | Gas station vent gas recycling method |
| CN104819378A (en) * | 2015-05-13 | 2015-08-05 | 安徽省鸿申压缩机有限公司 | Liquefied natural gas (LNG) automobile liquid adding device |
| CN104913196A (en) * | 2015-07-07 | 2015-09-16 | 中国海洋石油总公司 | BOG (boil-off gas) treatment process and device under normal operation condition of LNG (liquefied natural gas) receiving station |
| CN105824257A (en) * | 2016-04-18 | 2016-08-03 | 武汉交圣新能源工程有限公司 | BOG preferential power generation control method and system of LNG power driving vessel |
| CN107448936A (en) * | 2016-05-30 | 2017-12-08 | 中国石油天然气集团公司 | A kind of processing unit, the method and its application of natural gas vaporization gas |
| CN108332048A (en) * | 2018-04-25 | 2018-07-27 | 天津良华新能源科技有限公司 | A kind of movable type CNG air entraining substation systems |
| CN112303493A (en) * | 2019-08-02 | 2021-02-02 | 中国石油天然气股份有限公司 | Skid-mounted natural gas emptying tail gas recovery system and device |
| CN114087538A (en) * | 2020-08-24 | 2022-02-25 | 安瑞科(廊坊)能源装备集成有限公司 | LNG (liquefied Natural gas) conveying and filling system and control method thereof |
-
2013
- 2013-03-12 CN CN 201320110723 patent/CN203131417U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822091A (en) * | 2013-10-18 | 2014-05-28 | 中国石油化工股份有限公司 | Natural gas recycling method for compressed natural gas stations |
| CN103822094A (en) * | 2013-10-18 | 2014-05-28 | 中国石油化工股份有限公司 | Gas station vent gas recycling method |
| CN104819378A (en) * | 2015-05-13 | 2015-08-05 | 安徽省鸿申压缩机有限公司 | Liquefied natural gas (LNG) automobile liquid adding device |
| CN104819378B (en) * | 2015-05-13 | 2017-02-01 | 安徽省鸿申压缩机有限公司 | Liquefied natural gas (LNG) automobile liquid adding device |
| CN104913196A (en) * | 2015-07-07 | 2015-09-16 | 中国海洋石油总公司 | BOG (boil-off gas) treatment process and device under normal operation condition of LNG (liquefied natural gas) receiving station |
| CN104913196B (en) * | 2015-07-07 | 2017-04-19 | 中国海洋石油总公司 | BOG (boil-off gas) treatment process and device under normal operation condition of LNG (liquefied natural gas) receiving station |
| CN105824257A (en) * | 2016-04-18 | 2016-08-03 | 武汉交圣新能源工程有限公司 | BOG preferential power generation control method and system of LNG power driving vessel |
| CN105824257B (en) * | 2016-04-18 | 2018-04-17 | 武汉交圣新能源工程有限公司 | The preferential electricity-generating control methods of BOG and its system of LNG powered ships |
| CN107448936A (en) * | 2016-05-30 | 2017-12-08 | 中国石油天然气集团公司 | A kind of processing unit, the method and its application of natural gas vaporization gas |
| CN108332048A (en) * | 2018-04-25 | 2018-07-27 | 天津良华新能源科技有限公司 | A kind of movable type CNG air entraining substation systems |
| CN112303493A (en) * | 2019-08-02 | 2021-02-02 | 中国石油天然气股份有限公司 | Skid-mounted natural gas emptying tail gas recovery system and device |
| CN114087538A (en) * | 2020-08-24 | 2022-02-25 | 安瑞科(廊坊)能源装备集成有限公司 | LNG (liquefied Natural gas) conveying and filling system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING PROVA ENERGY CO., LTD. Free format text: FORMER NAME: BEIJING PROVA ENERGY TECHNOLOGY DEVELOPMENT CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 101102, Beijing, Zhongguancun Tongzhou District science and Technology Park, Tongzhou Park Jinqiao technology industry base, King Sheng, four South Street, No. 15, 37B Patentee after: BEIJING PROVA ENERGY HOLDING Co.,Ltd. Address before: 101102, Beijing, Zhongguancun Tongzhou District science and Technology Park, Tongzhou Park Jinqiao technology industry base, King Sheng, four South Street, No. 15, 37B Patentee before: BEIJING PROVA ENERGY DEVELOPMENT Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20130814 |
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| CX01 | Expiry of patent term |