DE1601256A1 - Process for cooling and filling a double-walled transport container for liquid gas - Google Patents

Description

ΛΒ01256

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\ Joto Joseph MoMuIleil Moiitclair ,. Kew Jersey (USA)

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sum JUaküfeleiv WM fill one

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3? Anks In Weltem OJmfaBg; Anwen ^ iiKtge 3Öal) sfti ji such as liquid ι

BADOBJQfNAL

1601258

not be introduced into a "Beäasöiifcer", which is located on Ufflgebungsteiiipeiatar, since, for example, liquid methane has a T®wgswmföw: ψοη around -16O ⁰ G and therefore the ffeiipeca-fceinjartiffer to a container that is a * uf Usge'b ' üii ^ 'liSiBpsra'iriix' is "too large ₌ So also Sieiierlieitsgiriiiiäeii in! case of methane the container must be at 140- ^o C a & gakSiiilt., before the liquid Ifetlian invited" rirä ·

E: s is desball "learn a constant Bedtir-FBI Naeh" / who-won dia AfeMüalpag such containers in L CAR / Eer since worn u ^ gebTa23§Bi EEIP-erat "r; on eineerlaub s in && w l *.? l, iäeslg; gas without Sehade.m \ m & without over e ¥ Erdffiisigsr? e3rliiate can-be introduced *

Toriia.gei $ öem EyfinöBing is the task. ©

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wiaeä ei * indimgsg @ iöaS iai ^ rcit "gal ^ at, that iel ^ tmdi ^ an '^ feaaagQriEfeeltalter for · llüssig gas the Hättae in'd'ep lanenträger and dienr üasssier / hefreit; and- then with / Sti © & s / t © f £ gas. " iasrdatnaeh through
in uem liquid »

BADORISI (SiAL

dieirfc * during cooling and circulation of nitrogen gas f3-liquid methane injected into the inner container becomes, fcis the 5Deinperäturen of the inside and outside boundaries Achieve a YorbeBtisanten value, whereupon liquid Nitrogen is used in the heat exchanger as a coolant until the temperatures of the inner and J.nSea containers Reach a further predetermined / value, and then the inner container with the sau loading liquid Hethan is filled, "

If the method according to the invention is used in single-ended l'anlr -, -. wherein the Atifienwaiiä container at a distance from the ship & oastriiktion aiageordiiet is and forms a leolierrauia so ui ^ ä zweckiBäßigerweise the iBolierraum from the water freed when the inner and Aizßenb he ehält voiti water BEF2 e ± 1?; purged with nitrogen gas when the inner and outer containers are purged and the nitrogen gas ± a dem. Outer container and the nitrogen gas in d; -effl _f: Is © lierraum ausananen by .the WariDeaustauscherzirkTaliert "2) a at kaan the liquid directly into the Hethan ^ are nnenibeMLl-fee ge spr it ät when the container erwandt emperature about.. -20 ⁰ C, and the inner container, too. loading, j sigesMeöiatt can be supplied when the container reaches a temperature of about -14O ⁰ C "

BAD ORIGINAL _<v .__, _

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The inventive method can also ii © rangeso ~ are gen to the üjemper & tur a Fliissiggas-OJransport-.Container "low zn keep the a: -and inner container has a iss spaced apart therefrom outer container> the ISS, in turn, to form a Isölierraumes distance is arranged from the hull of a transport ship that is in the ballast state ₉ , the outer container xmä the insulating rooms are filled with cold nitrogen gas and the inner container is partially filled with liquid methane, whereby according to the invention the nitrogen gas ₉ that is in the outer container - and the Isolierrattm, is constantly circulated through a heat exchanger and part of the liquid methane is pumped through the 1 / heat exchanger as coolant and then fed as steam to the upper part of the inner container Eu * to further cool the container ₀

Further features of the invention emerge from the following detailed description with reference to the drawing. It shows

Figure 1 schematically the device for implementation of the method according to the invention, according to the the containers are cooled, filled and in the baliast state to be kept cold "

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BATHROOM 0R161NAL-

16Q1256

the following is the "method according to the invention" under Reference to liquid methane as a charge and nitrogen f gas a, ls detergent is described, but it is available the hand that the invention is not "limited to but that the method according to the invention also other low boiling point liquid gases are used can be used, whereby other inert purge gas © can be usedc · '■.-.........

As already mentioned at the beginning, liquid methane must not be introduced into a container which is above ambient temperature. For safety reasons, the container must be ^{cooled to around -14O 0} O before the liquid methane can begin to be charged.

In FIG. 1, the double-walled © container is shown only schematically, with the inner wall 24 ', outer wall 22, the insulation 20 and, in some cases, an insulating space between the insulation 20 and the outer wall 22 being shown. However, any other double-walled container can also be used, For example, inner wall ^: i2 # and outer wall 22 can be corrugated ,,.

Tor the onset of cooling the container he-must this be flushed with an inert gas ^".At; this. Purpose will

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10984ß / 025S

generates an amount of nitrogen in a Stickstofferaeugungsanlage; and stored under pressure in large containers,

Any suitable device can be used to flush the seams and the container with inert gas in connection arranged üOsil are _a Ber ¹ within the isolation room. of Sohres is below can occur with openings omissions, serving by the gas insulating space * A separate Eohrleiführt of the inert gas to the inner vessel "Am

End of the insulating room and wall space Suitable manifolds are installed to supply the inert gas to the fan ».

may use any suitable arrangement provided the. Inner wall 24 and the outer wall 22 are kept gas-tight

¥ or d * em lulling the insulating room jind the room with inert gas, the air contained in these rooms becomes two or three eels _; over _f> -the .dewatering units, ρ, in order to reduce the operability of the, Luit,.,

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After the dehydration, the inert gas, in the specific example nitrogen, is released from the heat exchanger into the inner vessel and into the inner vessel at an effective temperature, whereby it flows in the inner vessel into the insulating space from top to bottom the inter-wall space & ^QS IIS dungsbehal- ters upstream to a blower and outgoing read until \ rinsed the trees and the container are C the nitrogen * hydrogen gas is located last at a temperature of ⁰ ° C * Säli an a-asta-useli of Two or three volxunes are the container between the wall and the space between the wall and the surface are ^{cooled down uniformly to about 0} ° C. Tucking takes about five hours for a container with a capacity of 10%. After rinsing, the blow-off opening is closed and the step material is thrown through. the / heat exchanger

When the rinsing is finished, the containers begin to cool down. The heat exchanger is initially fed by a I ⁶ ISssiggäi ^ üelle {in the present example a source of iitisöigmethane) so that the nitrogen assumes a lower temperature The flushing process described above, the nitrogen gas is again

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circulated with a fan through the insulating space and the space between the walls of the container, so that the inner wall 24 and the outer wall 22 of the container are evenly cooled. The methane given off by the heat exchanger is in vapor form, but its temperature is much lower than the ambient temperature. This vaporized methane is led through pipelines and then released directly into the container so that it is cooled inside. The methane gas rising in the container is collected and fed to a heating device in which it is ^{heated to about 15 0} C, in order to then be fed to a gas turbine or a fuel container Uaa ashore contained cooling device to _see where it wirdo converted into liquefied again it the main reservoir is then ifieder eye passes, au accelerate the cooling of the vessel, a small amount of liquid gas, "during this period also, for example, liquid methane, injected directly into the container

The performance of the fan and the heat exchanger

are.preferably set so that at the beginning of the cooling process the temperature difference between the ceiling

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de: ® BoSen of the container is not higher than 25 ⁰ G <

lach eiäse ^ AfeMIHLmgsphase τοπ etv / a 65 Stiradsn jbef in ~ ä & n the Isolisrra-affi ,, dex '' - W & nfr3w ± B.0lienr &"mn xm & the container at a! temperature. 'of about * ~ 130 ° ö _o Wenn the Beliäl-fcerteiape3? atiir -13O ⁰ O ^ rrelclit, can | ie Ali "img; des Beiialtera durcli TerscliieüeTie"

lime Maßsaaliiße giir- wslterea ^ Herabset & img the Semperatiir öes container ιαώα of Isölisrraiiins irnä ¥ aiiaswiaeheüra-uines besteilt DAX * ii: i _f the Viäriae tauseller instead tob llü ^ sigmetiian Fiüssigsticlcstcff siistifüliresao The stickst off gas is i umgevJäXst nook further 15 StiindeB -lang whereupon the bottom of the container reaches an! EeinperatTir of -140 ⁹ O α If the insulating space, the iiandaxTiachenraxiin, the container and the side walls of the container are at a! temperature τοπ about ■ -14Ö ° C, <the liquid methane is du7: ch the lülleitimg fed directly into the container «''

Another measure to Herabsetsung the vessel temperature below -130 ⁰ C is "Iron: eraem Wärmetauacher sait a 3 Smiling's 100 ro on eimeB other Wärmetauacher with a considerably grb'sseren" Pläche

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to pass o. Jy

The fulfillment of the experience enables ο ine cooling of four containers of 10,000 ares in one rieä ^ aits-eit τοπ about 60 hours ύοπ äev drainage, "up to? St; in the trash of the • container with Plüssigfiastüan. As a result of the thermosetting of the cooled nitrogen gas there is between the insulating space and the wall space of the container

the V / aiidawiscböiiraAiia, the inner wall 22 _s the ö 24-.Tand the inner rim of the container is cooled at the same uniform rate »

When the container is completely filled with liquid methane. is filled, we-ä its low! will be collected and can be used as fuel "Erfincnmgsgemäß give & τα bottom of the containers arranged pumps a small amount Flussigmethan to the heat exchanger from> during the nitrogen in the insulating space and the-Wandzwisohenraum usngewält ₀ In this manner, the circulated. Nitrogen maintained at about -145 ⁰ C.

When the ship has reached its destination and drops the cargo down to the ballast, the

-to- ..

* ■ -.-Y% 109846/0256 "AD ORieiNAL"

permanent Elüssigmethan cooling held and adhered to the above-mentioned SesiperatwrclifferenK of 25 ° _y by nitrogen umgeiaCLt dwell the heat exchanger - and pumped Plüssiginethan is used as the coolant "The tone of the Y / ärsaetaiiselier emitted Flüssigaethan by piping the ob older end of the container supplied WO. & injected into the container? so that the upper end of the container is held at such an angle that the above mentioned difference is observed. Carriages with only ballast are somewhat dangerous The above admonished. TJsraälsen von Stiele- ^: substance and methane vapor also serves as a safety measure against an explosion and rapid release. It should be understood that "in the case of railways with loading and ballast, any suitable coolant can be used, in particular any suitable liquefied gas _? Bort can be stored under pressure tem «!« But lan can also use a liquid stick test generator on board for this purpose «

Hereinafter, a Ausführiangsbeispiel is the invention by means of a container 10 000 described sr ^ The Hache between the container wall is s 1500 m and the total area of the isolation room is 6800 m ² _o

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With the help of a stiokstofferseiiger wise! Nitrogen obtained from the atmosphere and carried out in liquid iPorrn large storage containers * which are on land. " For Entwässeren the isolation and the isolation room air in three volumes will see astonished by the IsolierrauEö "the Wandswisehenrauiü and SWEi drainage ^ unit s run for rinsing HüssigsticJrstoff τοπ, land a heat exchanger on board _f fed into your nitrogen Terdampft and ron the. the nitrogen is released to the Isolierraimi at a temperature of about ^{0 ° C.} The whole container, the insulation space and the inter-wall space is _r rinsed with the aid of a blower having a capacity of 60,000 m / h and being mounted in the region of the container "This fan draws air from said spaces out and blows the air through a blow-off opening abc this purging of the container and the Käume will have been performed "to SWEi or three volumes replaced, which after about 5 hours of 3PaIl _e is, when only nitrogen is in these spaces" is the Abblaseöffmmg closed the blower then feeds the heat exchanger, ; and the liquid nitrogen source is shut off »the insulating space> the space between the wall, the fan» the heat exchanger and the connecting lines form a closed circuit that is filled with nitrogen gas that is constantly circulated

" ¹² V ßADOBieiNÄL,

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Thereafter, wecl Hüssigniethan from large, on land "lißlißii Iiageiib-eliältern 'dem ^ iäajme-tatiselier.s'ugefülar-te .sclier Isegimit (time 2STuH), the G-eti lass is set in such a way that it circulates the handle at a rate of 40 changes per hour.

2 exchanger 3aat an area of about 100 m "The nitrogen is quickly cooled" The methane escapes from the Wäraie-ta-UBcäei · 'in steam and is returned to the onshore Saiajnelbehalter -n, in order to flow again. SIGt zv. Dei be _σ * WäriBetauscher and the blower are adjusted so ■ _"9 is not that the '.Üeaiperatiaräifferens swiachen the upper and deai üiiteren end of the container more than 25 ° C Deträgt.

During a period τοη 75 hours, which in the fifth. Hour begins, or when the tank wall volume is about -20 * 0, about 6 tons of M / Üssiginethane are injected directly into the tank. If the temperature difference between the container wall and the methane injection is not higher than about 10 ⁰ O, the supply of liquid in ethane is gradually reduced to zero over a period of 20 hours. "

If I ¹ IUssigmethan for 65 hours through the Söhrschlan-

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gene of the heat exchanger has been passed. "Are bigh the container and the G-as practically the same! temperature so that _$ die'.Behältertemperatur are not quickly reduced by this measure canoe. Jetsrfc is your heat exchanger instead of ^l? led lüssigme.thans liquid nitrogen. Equilateral is liquid methane again introduced directly into the container in a large amount per unit of time * until this /? has reached the desired temperature.

? For a period of stv / a 15 hours, Deia heat exchanger 3 lüssigstickstoff supplied to _f until the nitrogen gas, "and the container on Ewa -IAO ⁰ O are cooled ensure that the tank reaches this temperature in stwa 80 hours;.! Be about 82 vaporized methane t and 36 t of nitrogen "Hach 80 hour check is the bottom of the container (this does not apply for the _o SLCH accumulating liquid methane) on a! temperature of about -144 ⁰ C and the ceiling at a temperature of about -139 ° "The inner vessel is then filled with the charge consisting of liquid methane. At the same time, an excessively high rise in gas pressure is avoided by blowing gas out of the interior of the container through suitable blow-off valves."

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During a ballast run, the nitrogen gas is kept moving "20 exchanges per day" so that the temperature difference between the trestles and the bottom of the container does not exceed 25 ° C. During the ballast run, 46 t of liquid methane per hour are passed through the heat exchanger to keep the nitrogen at the low temperature of 141 ^° C. The methane given off by the heat exchanger is injected directly back into the container.

3EI filled container is heated discharged from the heat exchanger Plüssagmethan at 15 ⁰ C and is fed as fuel to the boiler,

2 ¹ S it goes without saying that further changes are possible within the framework of the appreciation of the experience.

109 846/02 56

Claims (2)

Claims A method for cooling and filling a double-walled transport container for liquid gas, characterized in that the spaces in the inner container and the outer container are first freed from water and then filled with nitrogen gas, which is then rolled through a heat exchanger, in the liquid methane, is used as a coolant during the Küiilens the nitrogen gas liquid methane in the Inn enfeehälter spritst "until the Teffiperatisren of Innßn" and outer container reach irnd tiimwälzene a vorbeatiimaten Fourth _p then flüssißen Stick · = - · material in the V / ärseaustatischer used as -Kühlmittel * until the! temperatures of the inner and outer container · a second vorOestimniten value will reach ₉ and the inner container with deia zn loaded liquid methane fills = 2. The method according to claim 1 _f v / whether ei the outer wall of the container at a distance τοπ the Sehiffskonstruktioa to »is arranged and thus forms an insulating space, characterized in that one frees äen Isolierraua from the water _f when the inner and outer container of the water be released, flush with nitrogen gas _f when the interior - - ^b ~ 'BADORieiNAL 109 8 46/0256 1601258 . ■■■ · ": Λ: ■ · ■ · / v.nü. Αί.? Β ice container are rinsed , 'and the nitrogen gas ix \ the saucepan vmä the nitrogen gas in -, the insulating : r & -. M iFü8tmm && through the "heat exchanger umwälg-t-. _E 3t Yerfabren according to claim 1, gekemiseiehnet characterized »äaß subjecting the liquid methane directly 1ώ the Innenbehältei" injected "when the ■" container wall temperature is about "is 20 ⁰ G» tmd of the inner container au be loaded liquid methane zuführt- when the container a ■ ffesiperatur of reaches about -14-O ⁰ C *, 4ο Ahänäex'ivng the method according to claim 1 Fieclriglialten the iDemperature of a I'liquid gas transport container which has an inner container and an outer container arranged at a distance from it _v which in turn is arranged to form an insulating space at a distance from the Euxapf of a 2ran sport ship that is in the ballast state, whereby the outer container trad the isolation rooms are filled with cold nitrogen gas and the inner container is partially filled with liquid methane ρ characterized in that the nitrogen gas, .- dag is in the outer container and the Isolierranis, constantly through a Heat exchanger circulates part of the liquid methane as coolant through the heat exchanger and then pumps it as a - 17th 109846/0256 it Steam to the οΤ3βϊ? Βη rope of the lime vessel. Supplies, wb. to continue cooling the container, - 18th 109846/0256