CN104121479B - LNG tank car BOG injection recovery system - Google Patents
LNG tank car BOG injection recovery system Download PDFInfo
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- CN104121479B CN104121479B CN201410369387.8A CN201410369387A CN104121479B CN 104121479 B CN104121479 B CN 104121479B CN 201410369387 A CN201410369387 A CN 201410369387A CN 104121479 B CN104121479 B CN 104121479B
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Abstract
The present invention relates to a kind of LNG tank car BOG injection recovery system, including LNG storage tank, the liquid outlet of LNG storage tank is connected through the Diesel engine of supply air line with LNG tank car, and described supply air line is disposed with carburator, cleaner, air relief valve, surge tank, injection valve and blender along natural gas flow direction；Described supply air line is additionally provided with stop valve A on the pipeline section between air relief valve and surge tank, and supply air line pipeline section between stop valve A and air relief valve is connected with one end of air intake branch, and the air intake branch other end is connected with the main-inlet of jet induction apparatus；Supply air line pipeline section between stop valve A and surge tank is connected with the one end going out gas branch pipe, goes out the gas branch pipe other end and is connected with the outlet of jet induction apparatus；The BOG gas outlet of described LNG storage tank is connected with one end of exhaustor, and the exhaustor other end is connected with the secondary entrance of jet induction apparatus.This LNG tank car BOG injection recovery system low cost of manufacture, easy to implement, the BOG zero-emission that realizes on LNG tank car.
Description
Technical field
The present invention relates to a kind of LNG tank car BOG injection recovery system.
Background technology
Natural gas is one of three big energy arranged side by side with oil, coal.LNG has been widely used as industrial fuel, domestic fuel, steamer and motor vehicle fuel, and fuel for power generation.The transport of LNG tank car is the main mode that the non-pipe of land natural gas is defeated.After tank car discharge LNG, typically can remain small part LNG(such as in tank car: 50m3Tank car in general residual liquid be about 0.5m3) and the flash steam (being called for short BOG) of 0.4-0.5MPa.LNG tank car is before LNG gas station fills LNG, for ease of filling, needs, by the BOG discharge part in tank car, to make the pressure in tank car be down to about 0.25MPa.Additionally, during LNG tank vehicle commander's distance travel, the BOG pressure in LNG tank also can be increased to relief valve and start, the natural gas of preciousness is made to be discharged in air.Owing to the BOG quantity of each car is little, so, the cost reclaimed by re-liquefied method can be the highest.And torch is set in fueling station, not only investment is big, does not also meet the policy requirements of energy-saving and emission-reduction.Using the retracting device that storage tank and compressibility are constituted, its operating cost is high, and investment is big, can not solve the emission problem of BOG at all.In view of the foregoing, the most domestic is substantially that LNG tank car is reached appointed place, is directly discharged in air by BOG.Because natural gas is a kind of potent greenhouse gases, it is again main ozone layer depletion thing and inflammable explosive article, so, the BOG in LNG tank car is directly discharged in air, environmental pollution will certainly be caused, and band serves and is unfavorable for safe factor, additionally, for saving the energy, reduce the discharge of carbon dioxide, improving the economic benefit of transport, the LNG tank car with LNG as fuel is increasingly becoming main flow.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of low cost, easy to implement, reliable, reclaim LNG tank car BOG pressure recovery system thoroughly.
The present invention uses below scheme to realize: a kind of LNG tank car BOG injection recovery system, including LNG storage tank, the liquid outlet of described LNG storage tank is connected through the Diesel engine of supply air line with LNG tank car, and described supply air line is disposed with carburator, cleaner, air relief valve, surge tank, injection valve and blender along natural gas flow direction；Described supply air line is additionally provided with stop valve A on the pipeline section between air relief valve and surge tank, and supply air line pipeline section between stop valve A and air relief valve is connected with one end of air intake branch, and the air intake branch other end is connected with the main-inlet of jet induction apparatus；Supply air line pipeline section between stop valve A and surge tank is connected with the one end going out gas branch pipe, goes out the gas branch pipe other end and is connected with the outlet of jet induction apparatus；The BOG gas outlet of described LNG storage tank is connected with one end of exhaustor, and the exhaustor other end is connected with the secondary entrance of jet induction apparatus.
Further, described jet induction apparatus is injector.
Further, the electromagnetic valve being provided with between surge tank and injection valve on described supply air line, it was provided with flow shutoff valve on pipeline section between LNG storage tank and carburator, stop valve B supply air line being additionally provided with between surge tank and electromagnetic valve on supply air line.
Further, described air intake branch is provided with shutoff valve C, described in go out to be provided with on gas branch pipe stop valve D, described exhaustor is provided with stop valve E.
Compared with prior art, the method have the advantages that this LNG tank car BOG injection recovery system is reasonable in design, low cost of manufacture, easy to implement, reliable, reclaim thoroughly, it is achieved the BOG zero-emission on LNG tank car.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention system diagram；
Label declaration in figure: 1-LNG storage tank, 2-supply air line, 3-Diesel engine, 4-carburator, 5-cleaner, 6-air relief valve, 7-surge tank, 8-injection valve, 9-blender, 10-stop valve A, 11-air intake branch, 12-jet induction apparatus, 13-go out gas branch pipe, 14-exhaustor, 15-cross flow shutoff valve, 16-electromagnetic valve, 17-stop valve B, 18-shutoff valve C, 19-stop valve D, 20-stop valve E.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, below by specific embodiment and relevant drawings, the present invention will be described in further detail.
As shown in Figure 1, a kind of LNG tank car BOG injection recovery system, including LNG storage tank 1, the liquid outlet of described LNG storage tank 1 is connected with the Diesel engine 3 of LNG tank car through supply air line 2, and described supply air line 2 is disposed with carburator 4, cleaner 5, air relief valve 6, surge tank 7, injection valve 8 and blender 9 along natural gas flow direction；Described supply air line 2 is additionally provided with stop valve A10 on the pipeline section between air relief valve 6 and surge tank 7, the supply air line 2 pipeline section between stop valve A10 with air relief valve 6 is connected with one end of air intake branch 11, and air intake branch 11 other end is connected with the main-inlet of jet induction apparatus 12；The supply air line 2 pipeline section between stop valve A10 with surge tank 7 is connected with the one end going out gas branch pipe 13, goes out gas branch pipe 13 other end and is connected with the outlet of jet induction apparatus 12；The BOG gas outlet of described LNG storage tank 1 is connected with one end of exhaustor 14, and exhaustor 14 other end is connected with the secondary entrance of jet induction apparatus 12.In natural gas supply system-based, setting up a set of LNG storage tank BOG injection pressure charging system, in making tank, BOG can draw LNG storage tank as required, and is sent to tank car diesel engine combustion chamber.
In the present embodiment, described jet induction apparatus 12 is injector.
In the present embodiment, the electromagnetic valve 16 being provided with between surge tank 7 and injection valve 8 on described supply air line 2, it is additionally provided with the stop valve B17 between surge tank 7 and electromagnetic valve 16 on supply air line 2, described supply air line 2 was provided with flow shutoff valve 15 on pipeline section between LNG storage tank 1 and carburator 4.
In the present embodiment, described air intake branch 11 is provided with shutoff valve C 18, goes out and on gas branch pipe 13, be provided with stop valve D19, the exhaustor 14 of described LNG storage tank 1 is provided with stop valve E20.
This System Working Principle: when the pressure in LNG storage tank is the highest, opened flow shutoff valve 15, air relief valve 6, stop valve A10, electromagnetic valve 16 and stop valve B17, simultaneously close off shutoff valve C 18, stop valve D19 and stop valve E20, the supply making Diesel engine is completed by natural gas supply system, and injection pressure charging system quits work；When the pressure in LNG storage tank is increased to certain value, open shutoff valve C 18, stop valve D19 and stop valve E20, simultaneously close off stop valve A10, injection pressure charging system is made to be activated, BOG in LNG storage tank is discharged, the natural gas sent here with carburator 4 delivers to follow-up pipeline for Diesel engine as fuel after mixing in injector, makes BOG reach zero-emission.
Above-listed preferred embodiment; the object, technical solutions and advantages of the present invention are further described; it is it should be understood that; the foregoing is only presently preferred embodiments of the present invention; not in order to limit the present invention; all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (4)
1. a LNG tank car BOG injection recovery system, it is characterized in that: include LNG storage tank, the liquid outlet of described LNG storage tank is connected through the Diesel engine of supply air line with LNG tank car, and described supply air line is disposed with carburator, cleaner, air relief valve, surge tank, injection valve and blender along natural gas flow direction；Described supply air line is additionally provided with stop valve A on the pipeline section between air relief valve and surge tank, and supply air line pipeline section between stop valve A and air relief valve is connected with one end of air intake branch, and the air intake branch other end is connected with the main-inlet of jet induction apparatus；Supply air line pipeline section between stop valve A and surge tank is connected with the one end going out gas branch pipe, goes out the gas branch pipe other end and is connected with the outlet of jet induction apparatus；The BOG gas outlet of described LNG storage tank is connected with one end of exhaustor, and the exhaustor other end is connected with the secondary entrance of jet induction apparatus.
LNG tank car BOG injection recovery system the most according to claim 1, it is characterised in that: described jet induction apparatus is injector.
LNG tank car BOG injection recovery system the most according to claim 1, it is characterized in that: the electromagnetic valve being provided with between surge tank and injection valve on described supply air line, it was provided with flow shutoff valve on pipeline section between LNG storage tank and carburator, stop valve B supply air line being additionally provided with between surge tank and electromagnetic valve on supply air line.
LNG tank car BOG injection recovery system the most according to claim 1, it is characterised in that: be provided with shutoff valve C on described air intake branch, described in go out to be provided with on gas branch pipe stop valve D, described exhaustor is provided with stop valve E.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410369387.8A CN104121479B (en) | 2014-07-31 | 2014-07-31 | LNG tank car BOG injection recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410369387.8A CN104121479B (en) | 2014-07-31 | 2014-07-31 | LNG tank car BOG injection recovery system |
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| CN104121479A CN104121479A (en) | 2014-10-29 |
| CN104121479B true CN104121479B (en) | 2016-08-24 |
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| CN201410369387.8A Active CN104121479B (en) | 2014-07-31 | 2014-07-31 | LNG tank car BOG injection recovery system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017101968A1 (en) | 2015-12-14 | 2017-06-22 | Volvo Truck Corporation | A gas tank arrangement |
| CN113464843B (en) * | 2021-06-18 | 2023-03-07 | 安庆船用电器有限责任公司 | Ship low-speed diesel engine fuel gas supply system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86210785U (en) * | 1986-12-26 | 1987-10-31 | 王金龙 | Liquefied petroleum gas combustion system for automobiles |
| CN103443434A (en) * | 2011-03-11 | 2013-12-11 | 大宇造船海洋株式会社 | Method for supplying fuel for high-pressure natural gas injection engine |
| CN103814204A (en) * | 2011-09-28 | 2014-05-21 | 三菱重工业株式会社 | Direct fuel injection diesel engine apparatus |
| CN204042438U (en) * | 2014-07-31 | 2014-12-24 | 霍云鹏 | LNG tank car BOG injection reclaiming system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4347037B2 (en) * | 2003-12-25 | 2009-10-21 | 三菱重工業株式会社 | Fuel supply apparatus for gas-fired internal combustion engine such as gas turbine and LNG ship equipped with the same |
| KR20130121496A (en) * | 2012-04-27 | 2013-11-06 | 에스티엑스조선해양 주식회사 | Bog treatment apparatus for arctic lng carrier |
-
2014
- 2014-07-31 CN CN201410369387.8A patent/CN104121479B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86210785U (en) * | 1986-12-26 | 1987-10-31 | 王金龙 | Liquefied petroleum gas combustion system for automobiles |
| CN103443434A (en) * | 2011-03-11 | 2013-12-11 | 大宇造船海洋株式会社 | Method for supplying fuel for high-pressure natural gas injection engine |
| CN103814204A (en) * | 2011-09-28 | 2014-05-21 | 三菱重工业株式会社 | Direct fuel injection diesel engine apparatus |
| CN204042438U (en) * | 2014-07-31 | 2014-12-24 | 霍云鹏 | LNG tank car BOG injection reclaiming system |
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| CN104121479A (en) | 2014-10-29 |
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