CN103383061A - Liquefied natural gas forced gasification system - Google Patents
Liquefied natural gas forced gasification system Download PDFInfo
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- CN103383061A CN103383061A CN2013103389572A CN201310338957A CN103383061A CN 103383061 A CN103383061 A CN 103383061A CN 2013103389572 A CN2013103389572 A CN 2013103389572A CN 201310338957 A CN201310338957 A CN 201310338957A CN 103383061 A CN103383061 A CN 103383061A
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- lng
- nitrogen
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- liquefied natural
- storage tank
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Abstract
A liquefied natural gas forced gasification system is used for forced gasification operation of ship fuel storage holds or cargo holds, hold warming operation and differential pressure lighterage operation between the storage holds. According to the liquefied natural gas forced gasification system, a heating coil is arranged in a liquefied natural gas (LNG) storage tank and serially connected with a heat exchanger and a nitrogen buffer tank through pipelines, nitrogen is filled in the nitrogen buffer tank, and heat of the nitrogen is sent into the LNG storage tank by adopting forced circulation of a nitrogen circulation fan to promote gasification of LNG. The liquefied natural gas forced gasification system is simple in structure and safe and reliable to use, reduces manufacture cost and energy consumption during gasification, and is suitable for LNG fuel storage holds which do not often perform lighterage operation.
Description
Technical field
The present invention relates to a kind of LNG Liquefied natural gas (LNG) forced gasification system, be used for pressure reduction transportation by lighter operation between the forced gasification operation, the operation of warm cabin, storage cabin of marine fuel storage cabin or cargo hold.
Background technique
In recent years, along with pollution of atmosphere is day by day serious, the whole world is to the day by day serious lattice of the control of the gas discharging of boats and ships.The developed countries such as America and Europe have set up the control zone of oneself, reach at the appointed time TierII and TierIII emission standard.For solving the severe contamination problem in the Changjiang river and Zhujiang River waters, planned " gasification the Changjiang river " and " the gasification Zhujiang River " engineering.
The boats and ships natural gas fuel can reduce carbon emission more than 30% and the fuel cost of discharged nitrous oxides, the sulfide emission more than 98% and 30% left and right.Therefore, to use rock gas instead be that fuel is energy-saving and emission-reduction, improves the most directly effective measures of transport benefits to boats and ships.In recent years, nearly all shipowner considering that its existing ship is transformed into boats and ships take LNG as main fuel, is transformed into the boats and ships take LNG as auxiliary fuel at least, in order to can use LNG in emission control district, various countries, reaches emission standard.
LNG Liquefied natural gas is a kind of inflammable, explosive, easy leak materials, can boats and ships safely, use efficiently, transport, store LNG Liquefied natural gas, be related to the energy-saving and emission-reduction of Shipping industry, reduce cost of transportation, this is also the problem that various countries maritime affairs authorities very are concerned about and pay attention to.
Because forced gasification LNG need to arrange the formula pump of diving in storage cabin, or establish liquid-phase outlet in bilge section.The formula pump cost of diving is set higher, and reliability is relatively relatively poor; The storage cabin bottom arranges liquid-phase outlet, all releases from lower openings for preventing liquid, need to take more strict protective measures, and manufacture cost is higher.In addition, gasification needs larger energy consumption, and one kilogram of LNG of average every gasification needs to consume 510KJ heat energy or electric energy.
Summary of the invention
In order to overcome problems of the prior art, the invention provides a kind of LNG Liquefied natural gas forced gasification system.This forced gasification system should be simple in structure, and is safe and reliable, reduces manufacture cost, saves the energy consumption in gasification, is suitable for often not doing the LNG fuel storage cabin of transportation by lighter operation.
The technical solution used in the present invention is: a kind of LNG Liquefied natural gas forced gasification system, be provided with LNG storage tank air chamber on the LNG storage tank, be provided with heating coil in described LNG storage tank, heating coil is connected in series by pipeline and heat exchanger and nitrogen buffer tank, fills nitrogen in nitrogen buffer tank.
Be provided with the next door in described nitrogen buffer tank, the nitrogen circulation blower fan is set on next door.
Be provided with pressure gauge, thermometer and combustible gas detector in described nitrogen buffer tank.
The invention has the beneficial effects as follows: this LNG Liquefied natural gas forced gasification system, be provided with heating coil in the LNG storage tank, heating coil is connected in series by pipeline and heat exchanger and nitrogen buffer tank, fill nitrogen in nitrogen buffer tank, adopt nitrogen circulation blower fan pump circulation, the heat of nitrogen is sent in the LNG storage tank, promoted the LNG gasification.This forced gasification system architecture is simple, safe and reliable, has reduced manufacture cost, has saved the energy consumption in gasification, is applicable to often not do the LNG fuel storage cabin of transportation by lighter operation.
Description of drawings
The present invention is further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is the fundamental diagram of a kind of LNG Liquefied natural gas forced gasification system.
In figure: 1, heat exchanger, 1a, heat transferring medium import, 1b, heat transferring medium outlet, 2, nitrogen buffer tank, 2a, next door, 2b, nitrogen circulation blower fan, 2c, nitrogen inflating mouth, 2d, combustible gas detector, the 3, first heating coil, 3a, the second heating coil, 4, filling station, the 5, first spray pipe, 5a, the second spray pipe, the 6, the one LNG storage tank, 6a, the 2nd LNG storage tank, 7, a LNG storage tank air chamber, 7a, the 2nd LNG storage tank air chamber, 8, compressor; V1, V2 ..., V14, stop valve.
Embodiment
Fig. 1 shows the structural drawing of a kind of LNG Liquefied natural gas forced gasification system.In figure, LNG Liquefied natural gas forced gasification system, be provided with LNG storage tank air chamber on the LNG storage tank, be provided with heating coil in the LNG storage tank, heating coil is connected in series by pipeline and heat exchanger 1 and nitrogen buffer tank 2, be provided with next door 2a in nitrogen buffer tank 2, nitrogen circulation blower fan 2b is set on next door 2a.Be provided with pressure gauge, thermometer and combustible gas detector 2d in nitrogen buffer tank 2.
Shown in Figure 1, two storage tank heat coil pipes adopt the mode that is connected in parallel to be separately positioned in the LNG storage tank that two employings are connected in parallel.The top that is provided with the first heating coil 3 and the first spray pipe 5, the one LNG storage tanks 6 in the one LNG storage tank 6 is a LNG storage tank air chamber 7.Be provided with the second heating coil 3a and the second spray pipe 5a in the 2nd LNG storage tank 6a, the top of the 2nd LNG storage tank 6a is the 2nd LNG storage tank air chamber 7a.Filling station 4 connects respectively a LNG storage tank 6 and the 2nd LNG storage tank 6a in parallel by pipeline and stop valve.The heat exchanger 1 of series connection is connected with nitrogen buffer tank respectively and is connected the first heating coil 3 and the second heating coil 3a in parallel.Nitrogen is filled with in nitrogen buffer tank 2 through nitrogen inflating mouth 2c, is forced by nitrogen circulation blower fan 2b that heated nitrogen enters the first heating coil 3 or the second heating coil 3a in heat exchanger 1.Nitrogen is subject to entering from heat transferring medium import 1a in heat exchanger 1, and the thermal mediums such as the cylinder sleeve of engine water heating of flowing out from heat transferring medium outlet 1b again enters after heating coil heat is passed to LNG in the LNG storage tank, promotes the LNG gasification.LNG through gasification is gathered in LNG storage tank air chamber, by being delivered to each Ship Power Equipment after compressor 8 pressurizations.
Adopt above-mentioned technological scheme, overcome the formula pump of diving is set in the LNG storage tank, or establish liquid-phase outlet in tank bottom.Improve the security of system reliability, reduced manufacture cost.
Claims (3)
1. LNG Liquefied natural gas forced gasification system, be provided with LNG storage tank air chamber on the LNG storage tank, it is characterized in that: be provided with heating coil in described LNG storage tank, heating coil is connected in series by pipeline and heat exchanger (1) and nitrogen buffer tank (2), fills nitrogen in nitrogen buffer tank (2).
2. LNG Liquefied natural gas forced gasification according to claim 1 system, is characterized in that: be provided with next door (2a) in described nitrogen buffer tank (2), nitrogen circulation blower fan (2b) is set on next door (2a).
3. LNG Liquefied natural gas forced gasification according to claim 1 system, is characterized in that: be provided with pressure gauge, thermometer and combustible gas detector (2d) in described nitrogen buffer tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013103389572A CN103383061A (en) | 2013-08-06 | 2013-08-06 | Liquefied natural gas forced gasification system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103389572A CN103383061A (en) | 2013-08-06 | 2013-08-06 | Liquefied natural gas forced gasification system |
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| CN103383061A true CN103383061A (en) | 2013-11-06 |
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| CN2013103389572A Pending CN103383061A (en) | 2013-08-06 | 2013-08-06 | Liquefied natural gas forced gasification system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246340A (en) * | 2017-07-10 | 2017-10-13 | 河南柴油机重工有限责任公司 | A kind of fuel feed system suitable for LNG powered ship gas engines |
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| CN1898127A (en) * | 2003-12-18 | 2007-01-17 | 瓦特西拉芬兰有限公司 | Gas supply arrangement of a marine vessel and method of providing gas in a gas supply arrangement of a marine vessel |
| WO2007039480A1 (en) * | 2005-09-21 | 2007-04-12 | Exmar | Liquefied natural gas regasification plant and method with heat recovery |
| CN102555733A (en) * | 2012-01-13 | 2012-07-11 | 华南理工大学 | Cold energy utilizing device for liquefied natural gas refrigerator truck |
| CN202690145U (en) * | 2012-07-02 | 2013-01-23 | 中国海洋石油总公司 | Modular liquefied natural gas self-generating closed gasification device |
| JP2013032836A (en) * | 2011-06-30 | 2013-02-14 | Kobe Steel Ltd | Apparatus and method for gasifying low-temperature liquefied gas |
| CN103180656A (en) * | 2010-11-12 | 2013-06-26 | 株式会社Ihi | LNG vaporization equipment |
| CN203413348U (en) * | 2013-08-06 | 2014-01-29 | 国鸿液化气机械工程（大连）有限公司 | Forcible liquefying system for LNG (liquefied natural gas) |
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2013
- 2013-08-06 CN CN2013103389572A patent/CN103383061A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1898127A (en) * | 2003-12-18 | 2007-01-17 | 瓦特西拉芬兰有限公司 | Gas supply arrangement of a marine vessel and method of providing gas in a gas supply arrangement of a marine vessel |
| WO2007039480A1 (en) * | 2005-09-21 | 2007-04-12 | Exmar | Liquefied natural gas regasification plant and method with heat recovery |
| CN103180656A (en) * | 2010-11-12 | 2013-06-26 | 株式会社Ihi | LNG vaporization equipment |
| JP2013032836A (en) * | 2011-06-30 | 2013-02-14 | Kobe Steel Ltd | Apparatus and method for gasifying low-temperature liquefied gas |
| CN102555733A (en) * | 2012-01-13 | 2012-07-11 | 华南理工大学 | Cold energy utilizing device for liquefied natural gas refrigerator truck |
| CN202690145U (en) * | 2012-07-02 | 2013-01-23 | 中国海洋石油总公司 | Modular liquefied natural gas self-generating closed gasification device |
| CN203413348U (en) * | 2013-08-06 | 2014-01-29 | 国鸿液化气机械工程（大连）有限公司 | Forcible liquefying system for LNG (liquefied natural gas) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246340A (en) * | 2017-07-10 | 2017-10-13 | 河南柴油机重工有限责任公司 | A kind of fuel feed system suitable for LNG powered ship gas engines |
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Application publication date: 20131106 |