CN206478441U - Liquefied natural gas BOG recovery systems - Google Patents
Liquefied natural gas BOG recovery systems Download PDFInfo
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- CN206478441U CN206478441U CN201621489929.6U CN201621489929U CN206478441U CN 206478441 U CN206478441 U CN 206478441U CN 201621489929 U CN201621489929 U CN 201621489929U CN 206478441 U CN206478441 U CN 206478441U
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- bog
- natural gas
- liquefied natural
- gas
- engine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The utility model discloses liquefied natural gas BOG recovery systems, it includes engine, speed changer, refrigeration machine, heat exchanger, the BOG gases in liquefied natural gas tube top portion, and a part introduces engine, and a part introduces refrigeration machine；The both sides of speed changer are connected with engine, refrigeration machine respectively by the first connecting shaft, the second connecting shaft, heat exchanger is arranged on blast pipe and positioned at the downstream of catalysis bag, the water inlet of hot-water line is connected with the delivery port of heat exchanger, and the delivery port of hot-water line is connected with boiler.In the utility model, a part of gaseous state BOG can make driven by engine refrigeration machine that another part gaseous state BOG is converted into liquefied natural gas, and the exhaust heat of engine can be reclaimed using heat exchanger.The utility model is applied to the optimization design of liquefied natural gas BOG retracting devices.
Description
Technical field
The utility model is related to a kind of liquefied natural gas BOG recovery technologies, is characterized in a kind of liquefaction with engine day
Right gas BOG recovery systems.
Background technology
Liquefied natural gas, main component is methane, and it is fossil energy most clean on the earth to be recognized.Colourless, tasteless, nothing
Poison and non-corrosiveness, its volume is about the 1/625 of same amount gaseous natural gas volume, and the quality of liquefied natural gas is only consubstantiality ponding
45% or so.Its manufacturing process is the natural gas purification processing for first producing gas field, after being liquefied through a succession of ultralow temperature, is utilized
LNG carrier is transported.It is very small to air pollution after liquefied natural gas burning, and liberated heat is big, so liquefaction day
Right gas is a kind of more advanced energy.Liquefied natural gas is that natural gas is compressed, is cooled to its boiling point (- 161.5 DEG C) temperature
After become liquid, usual LNG storage is in -161.5 degrees Celsius, 0.1MPa or so low-temperature storage tank.Its it is main into
It is divided into methane, is transported, gasified again when using with special purpose ship or tank car.
Liquefied natural gas (LNG) is a kind of energy of clean and effective, compared with gasoline, diesel oil and compressed natural gas (CNG),
With the obvious advantage such as safe, economy is strong, negative environment effects are small, energy storage density is high.Therefore, LNG fires as automobile
Material, is widely used in city bus, heavy truck and intercity bus, and matched LNG gas stations are also synchronously obtained quickly
Development.Because LNG is cryogen, although LNG filling gas station equipments have good insulation, in the mistake for storing and operating
Cheng Zhong, due to natural heat transfer and system cooling needs, inevitably results from a number of LNG steams, i.e.,
BOG.With the increase of BOG quantity, raise the temperature and pressure of LNG systems, when reaching to a certain degree, it has to which release BOG
To reduce the pressure of system.Inherently a kind of very clean fuel of BOG, is discharged into and a kind of meaningless wave is not only in air
Take, and fuel gas is discharged into air, with potential danger.Counted according to certain LNG gas station, the BOG numbers discharged every year
Measure close to the station year for the 5% of LNG total amounts, economic loss exceedes 40 × 104 yuan.In addition, main component is methane in BOG, and first
Alkane is a kind of greenhouse effects very strong gas, and the greenhouse effects coefficient (GWP) of methane is 21 times of carbon dioxide.Therefore, we
BOG must be paid attention to diffuses problem.This not only conforms with the principles and policies of energy-saving and emission-reduction, is also the economy and safety for improving device
The important measures of property.But in existing technology, in the main air in the past of BOG based on discharge.
The content of the invention
The utility model for above-mentioned the deficiencies in the prior art there is provided a kind of liquefied natural gas BOG recovery systems, can be with
BOG gases are made effectively to be reclaimed.
The utility model realizes that the utility model includes liquefied natural gas storage tanks, started by following technology
Machine, blast pipe, catalysis bag, the first BOG gas fairlead, the first control valve, preheater, the first connecting shaft, speed changer, the second connection
Axle, refrigeration machine, the 2nd BOG gas fairlead, the second control valve, liquefied natural gas delivery pipe, cryogenic pump, the 3rd control valve, cold water
Pipe, heat exchanger, hot-water line, boiler, the air inlet of blast pipe are connected with the exhaust duct of engine, and catalysis bag is arranged in exhaust
Guan Shang, the air inlet of the first BOG gas fairleads with being connected at the top of liquefied natural gas storage tanks, the first BOG gas fairleads
Gas outlet is connected with engine, and the first control valve, preheater are sequentially arranged on the first BOG gas fairleads, and the two of speed changer
Side is connected with engine, refrigeration machine respectively by the first connecting shaft, the second connecting shaft, the air inlet of the 2nd BOG gas fairleads with
It is connected at the top of liquefied natural gas storage tanks, the gas outlet of the 2nd BOG gas fairleads is connected with the air inlet of refrigeration machine, the
Two control valves are arranged on the 2nd BOG gas fairleads, and the import of liquefied natural gas delivery pipe is connected with the liquid outlet of refrigeration machine,
The outlet of liquefied natural gas delivery pipe is connected with the bottom of liquefied natural gas storage tanks, cryogenic pump, the 3rd control valve cloth successively
Put in liquefied natural gas delivery pipe, heat exchanger is arranged on blast pipe and positioned at the downstream of catalysis bag, the delivery port of cold water pipe
Be connected with the water inlet of heat exchanger, the water inlet of hot-water line is connected with the delivery port of heat exchanger, the delivery port of hot-water line with
Boiler is connected.
Further, in the utility model, engine is natural gas engine, the first control valve, the second control valve,
Three control valves are magnetic valve.
The beneficial effects of the utility model are：The utility model is reasonable in design, simple in construction, it is possible to use BOG gas sheets
The energy of body rotates driven by engine refrigeration machine, and liquefy another part BOG gases, realizes BOG zero-emissions.Additionally can be real
The recovery of existing engine exhaust heat.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment；
Label in accompanying drawing is respectively：1st, liquefied natural gas storage tanks, 2, engine, 3, blast pipe, 4, generator, 5,
One BOG gas fairleads, the 6, first control valve, 7, preheater, the 8, first connecting shaft, 9, speed changer, the 10, second connecting shaft, 11, system
Cold, the 12, the 2nd BOG gas fairleads, the 13, second control valve, 14, liquefied natural gas delivery pipe, 15, cryogenic pump, the 16, the 3rd control
Valve processed, 17, cold water pipe, 18, heat exchanger, 19, hot-water line, 20, boiler.
Embodiment
Embodiment of the present utility model is elaborated below in conjunction with the accompanying drawings, the present embodiment is with the utility model technical side
Premised on case, detailed embodiment and specific operating process are given, but protection domain of the present utility model is not limited to down
The embodiment stated.
Embodiment
Embodiment of the present utility model as shown in figure 1, the utility model include liquefied natural gas storage tanks 1, engine 2,
Blast pipe 3, the 4, the first BOG gas fairlead 5 of catalysis bag, the first control valve 6, preheater 7, the first connecting shaft 8, speed changer 9, second
Connecting shaft 10, refrigeration machine 11, the 2nd BOG gas fairlead 12, the second control valve 13, liquefied natural gas delivery pipe 14, cryogenic pump 15,
3rd control valve 16, cold water pipe 17, heat exchanger 18, hot-water line 19, boiler 20, the air inlet of blast pipe 3 and the row of engine 2
Air flue is connected, and catalysis bag 4 is arranged on blast pipe 3, air inlet and the liquefied natural gas storage tanks 1 of the first BOG gas fairlead 5
Top be connected, the gas outlet of the first BOG gas fairlead 5 is connected with engine 2, and the first control valve 6, preheater 7 are successively
It is arranged on the first BOG gas fairlead 5, the both sides of speed changer 9 are by the first connecting shaft 8, the second connecting shaft 10 respectively with starting
Machine 2, refrigeration machine 11 are connected, and the air inlet of the 2nd BOG gas fairlead 12 is connected with the top of liquefied natural gas storage tanks 1, the
The gas outlet of two BOG gas fairleads 12 is connected with the air inlet of refrigeration machine 11, and the second control valve 13 is arranged in the 2nd BOG gas and drawn
In outlet pipe 12, the import of liquefied natural gas delivery pipe 14 is connected with the liquid outlet of refrigeration machine 11, liquefied natural gas delivery pipe 14
Outlet be connected with the bottom of liquefied natural gas storage tanks 1, it is natural that cryogenic pump 15, the 3rd control valve 16 are sequentially arranged in liquefaction
On letter shoot 14, heat exchanger 18 is arranged on blast pipe 3 and positioned at the downstream of catalysis bag 4, and the delivery port of cold water pipe 17 is with changing
The water inlet of hot device 18 is connected, and the water inlet of hot-water line 19 is connected with the delivery port of heat exchanger 18, the water outlet of hot-water line 19
Mouth is connected with boiler 20, and the first control valve 6, the second control valve 13, the 3rd control valve 16 are magnetic valve.
In implementation process of the present utility model, the band of engine 2 can be made into a part of BOG gases in engine 2
Dynamic refrigeration machine 11 is worked, and another part BOG gases in liquefied natural gas storage tanks 1 are converted into liquefied natural gas.Meanwhile, start
The waste heat that machine 2 discharges gas can be reclaimed by heat exchanger 18, make cold water be changed into being stored in after hot water in boiler 20.
Claims (2)
1. a kind of liquefied natural gas BOG recovery systems, including liquefied natural gas storage tanks (1), engine (2), blast pipe (3),
Catalysis bag (4), the air inlet of blast pipe (3) is connected with the exhaust duct of engine (2), and catalysis bag (4) is arranged in blast pipe (3)
On, it is characterised in that also including the first BOG gas fairlead (5), the first control valve (6), preheater (7), the first connecting shaft (8),
Speed changer (9), the second connecting shaft (10), refrigeration machine (11), the 2nd BOG gas fairlead (12), the second control valve (13), liquefaction day
Right letter shoot (14), cryogenic pump (15), the 3rd control valve (16), cold water pipe (17), heat exchanger (18), hot-water line (19), heat
Water tank (20), the air inlet of the first BOG gas fairlead (5) at the top of liquefied natural gas storage tanks (1) with being connected, the first BOG
The gas outlet of gas fairlead (5) is connected with engine (2), and the first control valve (6), preheater (7) are sequentially arranged in the first BOG
On gas fairlead (5), the both sides of speed changer (9) by the first connecting shaft (8), the second connecting shaft (10) respectively with engine (2),
Refrigeration machine (11) is connected, the air inlet of the 2nd BOG gas fairlead (12) with being connected at the top of liquefied natural gas storage tanks (1),
The gas outlet of 2nd BOG gas fairlead (12) is connected with the air inlet of refrigeration machine (11), and the second control valve (13) is arranged in
On two BOG gas fairleads (12), the import of liquefied natural gas delivery pipe (14) is connected with the liquid outlet of refrigeration machine (11), liquefaction
The outlet of gas delivering pipe (14) is connected with the bottom of liquefied natural gas storage tanks (1), cryogenic pump (15), the 3rd control valve
(16) it is sequentially arranged in liquefied natural gas delivery pipe (14), heat exchanger (18) is arranged on blast pipe (3) and positioned at catalysis bag
(4) downstream, the delivery port of cold water pipe (17) is connected with the water inlet of heat exchanger (18), and the water inlet of hot-water line (19) is with changing
The delivery port of hot device (18) is connected, and the delivery port of hot-water line (19) is connected with boiler (20).
2. liquefied natural gas BOG recovery systems according to claim 1, it is characterised in that the engine (2) is natural
Gas engine, first control valve (6), the second control valve (13), the 3rd control valve (16) are magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621489929.6U CN206478441U (en) | 2016-12-31 | 2016-12-31 | Liquefied natural gas BOG recovery systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621489929.6U CN206478441U (en) | 2016-12-31 | 2016-12-31 | Liquefied natural gas BOG recovery systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206478441U true CN206478441U (en) | 2017-09-08 |
Family
ID=59750265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621489929.6U Active CN206478441U (en) | 2016-12-31 | 2016-12-31 | Liquefied natural gas BOG recovery systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206478441U (en) |
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2016
- 2016-12-31 CN CN201621489929.6U patent/CN206478441U/en active Active
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