CN101224819B - Process and system for gas freeing - Google Patents
Process and system for gas freeing Download PDFInfo
- Publication number
- CN101224819B CN101224819B CN2007101655072A CN200710165507A CN101224819B CN 101224819 B CN101224819 B CN 101224819B CN 2007101655072 A CN2007101655072 A CN 2007101655072A CN 200710165507 A CN200710165507 A CN 200710165507A CN 101224819 B CN101224819 B CN 101224819B
- Authority
- CN
- China
- Prior art keywords
- oil tank
- gas
- oil
- air
- supply
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B57/00—Tank or cargo hold cleaning specially adapted for vessels
- B63B57/04—Tank or cargo hold cleaning specially adapted for vessels by ventilating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J2/00—Arrangements of ventilation, heating, cooling, or air-conditioning
- B63J2/02—Ventilation; Air-conditioning
- B63J2/08—Ventilation; Air-conditioning of holds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
-
- 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
- Y02T70/00—Maritime or waterways transport
Abstract
The invention discloses a degassing system on the ship or the other device, comprising a plurality of adjacent oil tanks connected by the bottom pipeline system. After emptying the oil, the oil tank is filled with gas such as carburetted hydrogen gas. The oil tank comprises at least one air intake for receiving and guiding the gas with specific gravity less than the existing gas in the oil tank such as inert gas and/or air; and an exhaust port for outputting the mixture of the existing gas and the supplied gas. A plurality of oil tanks mounted before the pendulous pipeline in the oil tank array or adjacent to the oil tank array ventilate the mixture of the existing gas and the supplied gas from the bottom of the oil tank by a vertical vent pipe, wherein the vertical vent pipe extends from the bottom of the adjacent oil tank and extends outside the oil tank. A plurality of oil tanks mounted behind the pendulous pipeline in the oil tank array ventilate the mixture of the existing gas and the supplied gas from the bottom of the oil tank by a bottom pipeline system and comes out from the pendulous pipeline.
Description
Technical field
The present invention relates to be used for the system and method for degasification on boats and ships or other equipment; Wherein, This system comprises a plurality of adjacent oil tanks; Contain the gas that is in gaseous state such as hydrocarbon gas in the oil tank, at least one admission port of each oil tank one after the other adds the gas of proportion less than gas in the oil tank in arranging through oil tank.
Background technology
Transport volatile gas in the oil tank on be everlasting boats and ships or other equipment.When this gas of unloading, the generation of gas vaporization in the oil tank before carrying out work and maintenance oil tank on the oil tank, must be removed it.
Supplying inert gas is a kind of standard procedure in unloading and the ventilation process in the oil tank on boats and ships.The advantage of unreactable gas is that level of oxygen is low.Before force using unreactable gas equipment, get into cargo tank and be positioned at above the existing crude oil in the uninstall process air.Therefore the spark that the gas mixture that produces can cause because of for example static explodes.In Oil Tank Cleaning when this situation particularly occurs in unloading and will finish.
From about 1970 beginnings, what put into practice is the gas of condensation from one or more oil tanks.If in one of cargo tank, must change loading pump, the compressor in the cooling intallation siphons away the gas in this oil tank, and the said gas that becomes liquid within it is added in another oil tank.Simultaneously, unreactable gas is added into the top of oil tank to be emptied.When whole oil tanks or when approximately all oil tank all contains unreactable gas, air just is blown into so that can come in the oil tank.Importantly, clear and definite boundary is arranged so that lose gas as few as possible between unreactable gas and the LPG gas.Captain on these ships and first mate use this technology to have for a long time.If the following shipments in all oil tanks all is a propane, common 80,000m
3The LPG oil tanker the unloading after needs 250 tons of propane cool off oil tank.If one of oil tank (50mt) has lost atmosphere, then to change under the situation of the propane that is lost not reaching port, said oil tank can not be cooled.This captain will postpone 24 hours, in process of reaching port outside the plan, produce a large amount of costs.
The gear that after unloading, carries crude oil has the oil tank atmosphere of mixing.Seldom a part of gear is useful on the equipment that in uninstall process, generates propane atmosphere in the oil tank.So propane is condensed in the oil tank on the deck in uninstall process.Can be used in combination with this equipment from the method for oil tank degasification according to of the present invention being used for.
At present the most frequently used degassing procedure is from the top unreactable gas/air to be blown in the oil tank downwards, and at the top pass-out be lower than 2%vol so that mix up to HC content, and through the exhausr port pass-out in the deck, as shown in Figure 7.This is a kind of acceptable method, but its very complicacy so very time-consuming, and this considers to have adverse effect from economic aspect.
WO9212893A1 discloses a kind of method that is used for to the oil tanker exhaust with oil drain drum.After the oil tank oil extraction, also remaining in the oil tank has some hydrocarbon gas.Unreactable gas supplies to oil tank via the admission port at each oil tank top, reduces to specified level up to the carburetted hydrogen gas scale of construction.In addition,
Http:// www.tc.gc.ca/publications/EN/TP4295/PDF/HR/TP4295E.pdfThe document of last announcement " standard (Standard for inert gassystems) that is used for inert gas system " discloses the operation of inert gas system.
Summary of the invention
An object of the present invention is to provide the process and the system that reduce the fuel quantity that is used for unreactable gas equipment, wherein, this process can comparatively faster speed be carried out.
Another object of the present invention is gas and/or the mixing of avoiding/reduce being present in the oil tank of the gas in the oil tank in the adding system.
Above-mentioned and other purposes realize through method and system of the present invention.
According to the present invention; A kind of method that is used for the system's degasification on boats and ships or other equipment is provided; Wherein, Said system comprises that through a plurality of adjacent oil tanks of bottom line system bonded assembly said bottom line system general on even keel extends through the oil tank row that said oil tank forms, and; Said oil tank air inclusion after oil drainage; And at least one admission port of each oil tank one after the other added during the oil tank that the gas that proportion is lower than existing gas in the said oil tank forms through said oil tank was arranged, so that from the bottom of each oil tank the compound of existing gas and supply gas is one after the other ventilated, wherein: step a. is for being arranged in a plurality of oil tanks sagging pipeline one side or the sagging pipeline that contiguous said oil tank is arranged that said oil tank is arranged; Through vertical breather pipe the gas mixture of existing gas and supply gas is one after the other ventilated, said vertical breather pipe extends and extends said oil tank from adjacent tank bottom; Step b. is for a plurality of oil tanks of the sagging pipeline opposite side among the said oil tank row; Through said bottom line system the gas mixture of existing gas and supply gas is one after the other ventilated, and with said gas mixture through said sagging pipeline pass-out; And when said gas mixture reaches at least one predetermined threshold in corresponding oil tank, with air to each oil tank repeating step a and b.
According to the present invention; A kind of system that is used for degasification on boats and ships or other equipment is provided; Comprise through a plurality of adjacent oil tanks of bottom line system bonded assembly; Said bottom line system water level land extends through the oil tank row that said oil tank forms; Said oil tank air inclusion after emptying oil; Each oil tank comprises at least one admission port and exhausr port, and said admission port is arranged for reception and introduces the gas that proportion is lower than the existing gas in the said oil tank, from tank bottom said exhausr port is used for the compound of said existing gas and supply gas is one after the other ventilated; Wherein: be arranged in said oil tank row's sagging pipeline one side or a plurality of oil tanks of the sagging pipeline that contiguous said oil tank is arranged and be arranged to through vertical breather pipe the gas mixture that comprises existing gas and supply gas ventilated, said vertical breather pipe extends and extends said oil tank from adjacent said tank bottom; And a plurality of oil tanks that are arranged in said oil tank row's said sagging pipeline opposite side are arranged to through said bottom line system the gas mixture of existing gas and supply gas ventilated, and with said gas mixture through said sagging pipeline pass-out.
Usually contain hydrocarbon gas during beginning in the oil tank, and the gas that adds comprises unreactable gas and/or air.Based on given controlling valu; Unreactable gas preferably is fed to first oil tank among the oil tank row; And the existing gas mixture in oil tank supplies air to said first oil tank when reaching given threshold value, based on said threshold value air is fed to next oil tank among the oil tank row in succession then.When the hydrocarbon gas content in the oil tank when to be equal to or less than size be 2% threshold value through the supply of the admission port in each oil tank air, the hydrocarbon gas content of supply air in all oil tanks of system be equal to or less than the threshold value that size is the following quick-fried limit of 1% hydrocarbon gas.
Except that recited above; This system can be configured to like this: unreactable gas is through overlapping unreactable gas pipeline system supply, and air passes through the supply of unreactable gas pipeline system through a plurality of blower fan supplies such as portable blower fan or after the unreactable gas conveying finishes.Each said vertical breather pipe can comprise at least one valve that is positioned at the breather pipe bottom and/or the valve that is positioned at breather pipe top.Each said vertical breather pipe can comprise the opening that roughly is positioned at exhausr port below, wherein, and the upstroke during this opening is arranged to when oil tank is full of, to reduce or is avoided managing.In addition; Deflector such as the perforation deflector can be arranged in one or more corresponding admission ports; So that the position under admission port spreads to the gas/air along continuous straight runs in the oil tank; And/or diffuser can be provided with said deflector explicitly, and wherein, diffuser is speed perforation and that be arranged for the gas/air that reduces to flow through deflector.
Advantage of the present invention is to be used for environment, time and so-called the off-hiring that the system of degasification will save heavy oil consumption.The running cost of this system is also lower.
Description of drawings
To further describe the present invention with reference to accompanying drawing now, wherein:
Fig. 1 comprises according to the system when beginning the cleaning of degasification and oil tank of the present invention.
System when Fig. 2 is included in the latter half of this process after the beginning.
Fig. 3 is included in the system of the latter half again of this process.
Fig. 4 comprises the general view of the cargo tank of observing from the top.
Fig. 5 comprises the oil tank after cleaning.
Fig. 6 comprises the remodeling of the main suction pipe short column in the oil tank.
Fig. 7 comprises the common method of degasification.
Fig. 8 comprises the alternative scheme of breather pipe.
The specific embodiment
When oil tank leaves port of debarkation, in the time of will getting into the workshop, must clean the storage.Afterwards, must supplying inert gas so that the concentration of HC gas is reduced to below 2% of volume (Vol.).Then, be blown into air so that the concentration of HC gas is reduced to 1% of 2% volume.This is called 1%LEL---following quick-fried limit.At this moment, can in oil tank, carry out work.Big oil tanker has for example 20 to 25 meters dark oil tanks, is very time taking if gas is blown into from the top then makes tank bottom reach 1%LEL, and the heaviest gas is positioned at the bottom.Through utilizing difference in specific gravity, the HC/ unreactable gas is extruded from the bottom.LEL% also will be the maximum concentration of tank bottom.The HC of 2% volume and the limit of 1%LEL are international requirements.
In the process that cleans the storage, for example can use two pumps.One of them is given the jet washer delivery pressure and aspirates from port slop oil tank 40.Another is carried from the suction of the tank bottom that just is being cleaned and to the port slop oil tank that is higher than oil tank 40.Liquid level in the port slop oil tank approximately is 10 meters, and the water of its bottom cleans very much, and oil float is at the top.
As stated; The present invention includes the system and the process that are used for degasification on boats and ships or other equipment; This system comprises a plurality of adjacent oil tanks 1,2,3,4,5,6; Said oil tank is connected by lower bottom line system 10, and said oil tank comprises the gas that such as hydrocarbon gas, is in gaseous state after emptying fluid.Each oil tank comprises: at least one admission port 12, admission port 12 are arranged for reception and the proportion such as unreactable gas and/or air are got into less than the gas that has gas in the oil tank now; And exhausr port, be used to make the gas mixture of existing gas and supply gas to discharge.Like what disclosed; A plurality of oil tanks 1,2,3,4 that sagging pipeline 16 among the front of the sagging pipeline 16 in oil tank row or the contiguous oil tank row is provided with are arranged to: the gas mixture of existing gas and supply gas is ventilated and pass-out thus from tank bottom through vertical breather pipe 14, breather pipe 14 is from the extension of tank bottom position adjacent and extend oil tank.In addition; The a plurality of oil tanks 5,6 that are arranged on the back of the said sagging pipeline 16 among the oil tank row are arranged to: the gas mixture of existing gas and supply gas is ventilated and through said sagging pipeline 16 pass-outs from tank bottom through bottom line system 10, this bottom line system 10 on even keel generally extends through oil tank and arranges.Should be pointed out that and to be provided with than multi-row oil tank more in the diagram.
If the institute of this process carries out in steps simultaneously, this process will be carried out with utmost dispatch.At first clean the storage, unreactable gas is fed to first oil tank among the oil tank row,, unreactable gas is fed to next oil tank among the oil tank row in succession based on the given controlling valu of cleaning with respect to previous oil tank.Then, supply air to said first oil tank according to given threshold value, based on said threshold value air is fed to next oil tank among the oil tank row in succession afterwards through the existing gas mixture in the oil tank.Fig. 1 is illustrated in to clean the storage and unreactable gas is introduced oil tank 12 the time.The compound of hydrocarbon gas and unreactable gas is pressed into the admission port 15 that is connected to breather pipe 14, discharges through the upper air vent of breather pipe 14.In Fig. 2, oil tank 1,2 and 3 has been accomplished cleaning, just in oil tank 4, cleans simultaneously.Just carrying out unreactable gas supply to oil tank 2 and 3 so that make HC be lower than the threshold value of 2% volume, the percent concentration of HC is lower than 2% threshold value in the oil tank 1, and has begun to be blown into air.As shown in the figure, this process is proceeded downwards along said oil tank, until the threshold value that reaches 2% volume and 1%LEL.
This process is further carried out in Fig. 3, and air just is being blown in oil tank 1,2 and 3, and unreactable gas is still in introducing oil tank 4 simultaneously.This process is also carried out in oil tank 5 and 6 simultaneously, and oil tank 6 is cleaning shown in the figure, and unreactable gas just is being incorporated in the oil tank 5 simultaneously.For oil tank 5 and 6 and the slop oil tank of starboard (if existence), the compound master of hydrocarbon gas and unreactable gas is if it were not for through the breather pipe guiding, but preferably guides with sagging pipeline 16 through bottom line system 10.Bottom line system 10 comprises necessary valve, is used for the compound of said hydrocarbon gas and unreactable gas is transported to sagging pipeline 16.This is equally applicable to air supplied subsequently.Continuation is introduced unreactable gas in the oil tank 5, until the threshold value that reaches 2% volume, passes through blower fan then---preferably introduce air through portable blower fan 18, and as shown in Figure 5, until the threshold value that reaches 1%LEL.
Slop oil tank---particularly the slop oil tank 30 of starboard can the mode identical with other oil tanks be cleaned and degasification.Slop oil tank 30 preferably is cleaned and hose down with oil tank 6 simultaneously.Yet, importantly to avoid before oil tank 6 and hydrocarbon gas content in the starboard slop oil tank are lower than 2% volume, air is from oil tank 5 circulations.Doing like this is the explosive mixture in the pipeline system.As can be observed among Fig. 4, cargo tank---preferably can comprise a plurality of main valves and a plurality of foul valve/stripping valve in each oil tank.
Unreactable gas is supplied from the unreactable gas pipeline system.Trunk Line can extend and be branched off into all oil tanks forward along the deck.Air can be carried by the portable blower fan 18 that is arranged on the oil tank jar mouth, perhaps when unreactable gas equipment is not used further to supplying inert gas, does not carry air with unreactable gas equipment.
The gas mixture of HC/ unreactable gas (the oil tank atmosphere after the unloading) nearly weighs 30% than unreactable gas is big.Unreactable gas nearly weighs 5% than air is big, because the compound of unreactable gas ratio such as HC gas and unreactable gas is light, this makes that it is favourable adopting unreactable gas.Yet, do not get rid of the possibility that adopts other gases with identical or equivalent feature.
If carry out quick degasification, then have only the oil tank at the rear portion of sagging pipeline to ventilate through bottom line system 10.If all oil tanks all will ventilate through sagging pipeline 16, must wait until then that cleaning finishes just can ventilate afterwards.Like this, degasification work will continue more than 24 hours, and will off-hire more than 24 hours, and this does not normally expect, daily rate normally 50 for big oil tanker, 000USD.Yet, can shared pipeline be set for every pair of oil tank.
Can be advantageously used in the oil tank that unloading comprises the gas mixture of hydrocarbon gas (10-40% usually) and unreactable gas afterwards according to system of the present invention and process.This process is used for before for example getting into the workshop, carrying out degasification.
Deflector/diffuser under the admission port is used to avoid/reduce mixing.Usefully, make said deflector perforation so that the speed of the windstream that reduces on the deflector edge, to flow out.More particularly, the one or more deflectors that occur with the for example form of the deflector 22 of perforation also can be installed in the below and be equipped with in the respective openings of blower fan, and/or said deflector is installed in the admission port 12 of supplying inert gas/air.Deflector 22 moves as follows: be blown into the position along continuous straight runs of in-to-in air/unreactable gas under admission port and spread in the oil tank, rather than directly be blown into downwards.This helps reducing or is avoided the gas in the oil tank to mix.If desired, such deflector can be installed in the below of all unreactable gas admission ports.When some oil tank has been removed gas, possibly hope to remove blower fan so that increase the capacity that it needs most.In addition, can diffuser be set explicitly with said deflector 22, this diffuser is speed perforation and that be arranged to reduce flow through the gas/air of deflector.
If it is rare that unreactable gas became, can generate additional unreactable gas and it is fed in the oil tank, so said oil tank contains unreactable gas.Can air be blown in the oil tank that contains air with portable blower fan simultaneously.
In addition, as stated, this system comprises starboard slop oil tank 30 and port slop oil tank 40, is used for the storage of water and the dregs of fat.Because said oil tank has been used for existing systems, be known for a person skilled in the art, said oil tank is not described here in more detail.
Advantageously, when beginning to add unreactable gas, accomplished cleaning to said oil tank.Yet this is not absolute requirement, because for the not long boats and ships of stroke, carrying out degasification with this kind mode is unadvisable from the time aspect.So a kind of optional mode is, when cleaning a certain particular point in time, also do not have unreactable gas to be added the oil tank that is cleaned in the oil tank of system downstream of supplying inert gas.Should be noted in the discussion above that known washing system does not clean the traffic capacity of two above oil tanks simultaneously.
HC content in the oil tank of measuring is 1%LEL (that is to say that HC gas is following quick-fried limit, promptly 1%) or still less the time, thinks that just corresponding oil tank removed gas.Ventilation operation continues to carry out to avoid surpassing 1%LEL in being trapped in the whole process in workshop.
Should also be noted that concentration as HC rises to 2% when above, should not add air in the corresponding oil tank.The content that in whole process, continues monitoring oxygen and HC is to guarantee safety.
After ventilating, the port slop oil tank contains the water and the dregs of fat probably.As known, when arriving the workshop, must clean and degasification slop oil tank.
The remodeling of the main suction pipe tip of a branch in the oil tank that Fig. 6 openly ventilates through bottom line system 10.Preferably, carry out this remodeling to avoid liquid to stop up the main suction pipe tip of a branch.Main suction pipe short column downcuts with respect to the mode of the certain height of blowdown suction pipe short column poor (for example 10cm) with acquisition.
Claims (13)
1. method that is used for the system's degasification on boats and ships; Wherein, Said system comprises through a plurality of adjacent oil tanks of bottom line system (10) bonded assembly (1,2,3,4,5,6), extends through to said bottom line system (10) approximate horizontal the oil tank row that said oil tank forms, and; Said oil tank air inclusion after oil drainage; And at least one admission port (12) of each oil tank one after the other added during the oil tank that the gas that proportion is lower than existing gas in the said oil tank forms through said oil tank (1,2,3,4,5,6) was arranged, so that from the bottom of each oil tank the compound of existing gas and supply gas is one after the other ventilated, it is characterized in that:
Step a. is for a plurality of oil tanks of oil tank row's sagging pipeline (16) one sides that are arranged in said oil tank row or contiguous said sagging pipeline (16); Through vertical breather pipe (14) gas mixture of existing gas and supply gas is one after the other ventilated, said vertical breather pipe (14) extends and extends said oil tank from adjacent tank bottom;
Step b. is for a plurality of oil tanks of sagging pipeline (16) opposite side among the said oil tank row; Through said bottom line system (10) gas mixture of existing gas and supply gas is one after the other ventilated, and with said gas mixture through said sagging pipeline (16) pass-out; And
When said gas mixture reaches at least one predetermined threshold in corresponding oil tank, with air to each oil tank repeating step a and b.
2. method according to claim 1 is characterized in that, said oil tank during beginning (1,2,3,4,5,6) comprises hydrocarbon gas, and said supply gas comprises unreactable gas.
3. method according to claim 1 is characterized in that, said oil tank during beginning (1,2,3,4,5,6) comprises hydrocarbon gas, and said supply gas comprises air.
4. according to each described method among the claim 1-3; It is characterized in that; Unreactable gas is supplied to first oil tank among the oil tank row; Based on given controlling valu unreactable gas is fed to next oil tank among the oil tank row in succession then, and the gas mixture in being present in said oil tank supplies air to said first oil tank when reaching given threshold value, based on said threshold value air is fed to next oil tank among the oil tank row in succession then.
5. method according to claim 4 is characterized in that, when the hydrocarbon gas content in oil tank when to be equal to or less than size be 2% threshold value, through the admission port in each oil tank (12) supply air.
6. according to claim 2 or 3 described methods, it is characterized in that supply air, the whole hydrocarbon gas content in all oil tanks in said system are equal to or less than the threshold value that size is the following quick-fried limit of 1% hydrocarbon gas.
7. system that is used for degasification on boats and ships; Comprise through a plurality of adjacent oil tanks of bottom line system (10) bonded assembly (1,2,3,4,5,6); Said bottom line system (10) on even keel extends through the oil tank row that said oil tank forms; Said oil tank air inclusion after emptying oil, each oil tank comprises at least one admission port (12) and exhausr port, said admission port (12) is arranged for and receives and introduce the gas that proportion is lower than the existing gas in the said oil tank; From tank bottom said exhausr port is used for the compound of said existing gas and supply gas is one after the other ventilated, it is characterized in that:
Be arranged in said oil tank row's sagging pipeline (16) one sides or a plurality of oil tanks (1,2,3,4) of the sagging pipeline (16) that contiguous said oil tank is arranged and be arranged to through vertical breather pipe (14) gas mixture that comprises existing gas and supply gas ventilated, said vertical breather pipe (14) extends and extends said oil tank from adjacent said tank bottom; And
The a plurality of oil tanks (5,6) that are arranged in said oil tank row's said sagging pipeline (16) opposite side are arranged to through said bottom line system (10) gas mixture of existing gas and supply gas ventilated, and with said gas mixture through said sagging pipeline (16) pass-out.
8. system according to claim 7; It is characterized in that; Unreactable gas is through the supply of overlapping unreactable gas pipeline system, and air through a plurality of blower fans (18) supply perhaps after the adding of unreactable gas finishes through the supply of said unreactable gas pipeline system.
9. system according to claim 7 is characterized in that, every said vertical breather pipe (14) comprises at least one valve that is positioned at said breather pipe bottom and/or is positioned at the valve (20) on said breather pipe top.
10. according to claim 7 or 9 described systems; It is characterized in that; Every said vertical breather pipe (14) comprises the opening that roughly is positioned at said exhausr port below, and wherein, said opening is arranged to when said oil tank is full of, reduce or avoid the buoyancy in the said pipe (14).
11. according to each described system among the claim 7-9; It is characterized in that; Deflector (22) is set in one or more corresponding admission ports (12), and the position level ground that said deflector (22) is arranged under the said admission port arrives said oil tank with gas dispense.
12. system according to claim 11 is characterized in that, the deflector that said deflector (22) is configured to bore a hole, and said deflector is arranged for the speed of the gas that reduces to flow through.
13. system according to claim 11 is characterized in that, is provided with diffuser explicitly with said deflector (22), wherein, said diffuser is speed perforation and that be arranged for the gas that reduces to flow through said deflector (22).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO20064911A NO333269B1 (en) | 2006-10-26 | 2006-10-26 | Procedure and system for gas freezing of tanks on board a vessel or other installation |
| NO20064911 | 2006-10-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101224819A CN101224819A (en) | 2008-07-23 |
| CN101224819B true CN101224819B (en) | 2012-09-05 |
Family
ID=39575498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101655072A Active CN101224819B (en) | 2006-10-26 | 2007-10-26 | Process and system for gas freeing |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5192211B2 (en) |
| KR (1) | KR101356674B1 (en) |
| CN (1) | CN101224819B (en) |
| NO (1) | NO333269B1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101681703B1 (en) * | 2009-10-29 | 2016-12-01 | 대우조선해양 주식회사 | Container carrier propelled with liquified fuel gas |
| NO331559B1 (en) * | 2010-03-08 | 2012-01-23 | Hamworthy Oil & Gas Systems As | System for reducing emissions from volatile liquid cargo |
| KR101618620B1 (en) * | 2014-06-05 | 2016-05-10 | 삼성중공업 주식회사 | Ventilating system |
| KR102322386B1 (en) * | 2017-08-14 | 2021-11-04 | 현대자동차주식회사 | Fuel tank explosion prevention system |
| CN109775166A (en) * | 2019-01-07 | 2019-05-21 | 深圳市奥德机械有限公司 | Nitrogen sealing system for die heater oil tank |
| CN111891327A (en) * | 2020-08-05 | 2020-11-06 | 上海外高桥造船有限公司 | Crude oil cargo hold ventilation system and offshore floating production oil storage ship comprising same |
| NO346995B1 (en) * | 2021-09-21 | 2023-04-03 | Gba Marine As | Vapour transfer assembly and method for use thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2049987A (en) * | 1930-01-13 | 1936-08-04 | Us Fire Prot Corp | Method of and means for protecting combustibles |
| US5054526A (en) * | 1990-03-22 | 1991-10-08 | Atlantic Richfield Company | Method and system for reducing hydrocarbon vapor emissions from tankers |
| WO1992012893A1 (en) * | 1991-01-17 | 1992-08-06 | Reidar Wasenius | Transportation of oil |
| CN1101783A (en) * | 1993-03-30 | 1995-04-19 | 埃尔夫阿托化学有限公司 | Device for inerting a storage tank |
| US5570714A (en) * | 1993-03-18 | 1996-11-05 | Liquid Management Products, Inc. | Explosion-retardant containment vessel for storage of flammable liquids |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4913267Y1 (en) * | 1969-09-26 | 1974-04-01 | ||
| JPS5124956Y2 (en) * | 1971-06-30 | 1976-06-25 | ||
| JPS5343538Y2 (en) * | 1973-02-26 | 1978-10-19 | ||
| JPS5714326B2 (en) * | 1973-04-10 | 1982-03-24 | ||
| JPS49132784A (en) * | 1973-04-23 | 1974-12-19 | ||
| JPS6215097U (en) * | 1985-07-12 | 1987-01-29 | ||
| US5213054A (en) | 1992-05-08 | 1993-05-25 | Gallagher John J | Emergency bulk liquid handling system for tankvessels |
-
2006
- 2006-10-26 NO NO20064911A patent/NO333269B1/en unknown
-
2007
- 2007-10-26 JP JP2007279025A patent/JP5192211B2/en active Active
- 2007-10-26 CN CN2007101655072A patent/CN101224819B/en active Active
- 2007-10-26 KR KR1020070108266A patent/KR101356674B1/en active IP Right Grant
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2049987A (en) * | 1930-01-13 | 1936-08-04 | Us Fire Prot Corp | Method of and means for protecting combustibles |
| US5054526A (en) * | 1990-03-22 | 1991-10-08 | Atlantic Richfield Company | Method and system for reducing hydrocarbon vapor emissions from tankers |
| WO1992012893A1 (en) * | 1991-01-17 | 1992-08-06 | Reidar Wasenius | Transportation of oil |
| US5398629A (en) * | 1991-01-17 | 1995-03-21 | Den Norske Stats Oljeselskap As | Transportation of oil |
| US5570714A (en) * | 1993-03-18 | 1996-11-05 | Liquid Management Products, Inc. | Explosion-retardant containment vessel for storage of flammable liquids |
| CN1101783A (en) * | 1993-03-30 | 1995-04-19 | 埃尔夫阿托化学有限公司 | Device for inerting a storage tank |
Also Published As
| Publication number | Publication date |
|---|---|
| NO20064911L (en) | 2008-04-28 |
| CN101224819A (en) | 2008-07-23 |
| KR101356674B1 (en) | 2014-02-03 |
| JP2008155996A (en) | 2008-07-10 |
| KR20080037597A (en) | 2008-04-30 |
| JP5192211B2 (en) | 2013-05-08 |
| NO333269B1 (en) | 2013-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101224819B (en) | Process and system for gas freeing | |
| US7584623B2 (en) | Device for supplying fuel to an energy production installation of a ship | |
| US20120111417A1 (en) | Offset ambient level fuel feed system | |
| WO2012007900A1 (en) | A ship including a tank space | |
| CN105270567A (en) | Pipeline layout structure for ship ballasting system | |
| CN108027108A (en) | The fuel tank arrangement of marine ships | |
| KR20190012546A (en) | Gas Replacement System of Liquefied Gas Storage Tank and Ship having the same | |
| US20140124068A1 (en) | Tank overflow pipe system | |
| JP2018096350A (en) | Fuel oil transfer device | |
| CN108905525B (en) | Recovery system of volatile organic compound | |
| EP2544987B1 (en) | A system for reduction of emissions from volatile liquid cargo | |
| KR20140015025A (en) | Gas exhaust structure for combustion gas in ships | |
| WO1996038375A1 (en) | Refilling liquid storage tanks | |
| US3957009A (en) | Ship ballast, oil and water separation system | |
| KR20120112486A (en) | Arrangement for fuel supply to an engine | |
| KR101295663B1 (en) | Ship mounted with settling tank for oil-water segregation | |
| KR102036622B1 (en) | A Transfer Device of Fuel Oil | |
| SE533444C2 (en) | units pump | |
| JP4073421B2 (en) | Sediment discharge device in ship's ballast tank | |
| KR101422608B1 (en) | Apparatus for Discharging Ballast Water for Ship | |
| KR102396265B1 (en) | System for helicopter fuel supply with defueling function | |
| KR101519535B1 (en) | Loading/unloading piping system and crude oil carrier having the same | |
| JPH09175494A (en) | Balast tank ventilation device | |
| JP2009119903A (en) | Air vent device of fuel tank and marine vessel | |
| JPH0710077A (en) | Pumping device for cargo oil tank of tanker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WARTSILA MOSS AS Free format text: FORMER OWNER: TANKVENTILASJON AS Effective date: 20141211 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141211 Address after: Norway Moss Patentee after: Moss s company Address before: Norway Patentee before: Tankventilasjon AS |