DE2002552A1 - Method and device for the intermediate storage of a normally gaseous substance, in particular natural gas - Google Patents

Description

" Method and device for the intermediate storage of a normally gaseous substance, in particular Erdp; as "

The invention relates to a method and a device. for the intermediate storage of a normally gaseous substance, in particular natural gas, in which the gas is at least partially liquefied and stored in this state and at a later date Time is liquefied again. Even in this state, the liquefied gas can only be stored.

Consumption of energy from plants producing energy Coal, oil and. Energy supplied by gas fluctuates between wide limits. This is why it must be used during periods Excess energy generated at low consumption is stored and additionally supplied during excessive demand can be. Such an intermediate * storage great difficulty when the energy source is one. Gaseous substance is gaseous because it is used for interim storage Substances' large containers are required as the Consumers only connected to a gas distribution network is, but does not store gas itself. To get the best possible and

<009 * 31- / 1-564

BATH

thus the most economical use of a gas source and the Gas pipelines of a natural gas distribution system, i.e. a system for distributing the gases that often, but not can only be found in petroleum deposits and consist mainly of methane It is customary to determine the consumption to be covered and to design the gas lines or the pipeline network in such a way that the rate of gas generation can be kept constant but the gas line pressure fluctuates with consumption, however does not exceed the permissible gas line pressure.

In a natural gas distribution system, it is common to use a high pressure line from the natural gas source to the main consumption area. In the high pressure pipeline can at different Provide pumps that compensate for the pressure drop. Branch off at such a main line Medium pressure branch lines to the individual consumers. The pressure at the gas source fluctuates within wide limits, which is why it is common practice to regulate the pressure of the gas entering the main line. Currently become the main lines usually with a maximum operating pressure of about 30 atm. operated. These pressures occur during periods low consumption, while with increasing consumption the pressure down to about 12 atm. can fall off. These The values given are average words and may vary depending on the gas source, local conditions, etc. The principle on which the invention is based and yet to be explained can, however, also be applied to such gas distribution networks use. The figures given should therefore only be understood as examples. Because of the gas pressure fluctuations ... Due to the different consumption rate, precautions are often taken to avoid peaks in natural gas delivery during of the periods of low consumption, i.e. when the gas pressure is high, with part of the gas from the pipe

7th

009831/1564

BAÖ ORIGINAL

- 4A-37 382

- 3 - '

deduction, usually by liquefaction up to for re-gasification or re-gasification and distribution into the Pipeline network temporarily stored at times of high consumption will-. In the case of intermediate storage of generation peaks usually a cooling system used ', in which on High pressure compressed and re-evaporated by boiling if necessary will. Such interim storage is nisEiä3ig. expensive.

It has now been found that a relatively simple storage method, especially for. short-term interim storage of natural gas ", which automatically responds to consumption and can be regulated by this * -W, The method makes use of the well-known fact that the boiling point of a liquefied gas is not a constant, but rather that it is depends on the pressure on the liquid or its pressure. The method according to the invention therefore essentially consists in exposing the gas to such a temperature that at the high pressure present in the gas line at times of low consumption a part is liquefied, but at the low pressure prevailing during times of high consumption the liquefied part Gas is evaporated again and sent to the consumer . '■■■■ - ■■■■ .- ■' ■■. ,

^: . ■ ^; ■■■■ '. "■■ '. ■■' ■ ■■■■■■ - ■■ ^: ι

As stated above, main gas ducts are used at low gas consumption with a pressure of about 30 atm. operated. At this pressure is the boiling point of natural gas, which consists essentially of methane and to a lesser extent from other hydrocarbons of higher molecular weight, mainly cabbage approx. ^R ater substances with 2 to 5 carbon atoms, consists, at about 17-5 ⁰ K · the natural gas - to a temperature of 165-K at a pressure of 30 atm. cooled, its temperature is below the boiling point of the hydrocarbon components and therefore liquefies * Now rising

009831/1564

. BATH

1Δ-37 382 2002552

the gas consumption increases, so that the pressure in the gas line drops to such a level that the boiling point of the liquefied gas below the temperature of 165 ° K is liquefied the gas; the gas generated in this way can be released into the line leading to the consumer. At 12 atm. is the Boiling point of natural gas, for example, about 155 K.

Maintaining a temperature between the upper and lower boiling points for those in the gas distribution network existing pressure conditions can take place, for example, by means of appropriately regulated cooling systems. According to the invention however, the use of a substance having a phase transition temperature as a refrigerant is preferred the temperature at the transition from the solid to the liquid phase, i.e. the melting point, between the two previously mentioned has the highest and low boiling temperatures. The phase transition temperature of this refrigerant, which is in the hereinafter referred to as cryogenic medium, is preferably about halfway between the boiling points of the natural gas at the highest and lowest pressures likely to occur. By using such a cryogenic medium creates an essentially reversible position in which the heat or Cold gains and losses associated with the physical changes in state at constant temperature, the so-called. latent heat changes can be exploited in such a way that with low consumption, when the gas line pressure is high, Gas from the line, which is in heat exchange with the cryogenic agent of one phase, can be liquefied can, whereby it gives off its heat content to the cryogenic agent, so that this passes into the other phase. If the gas line pressure then drops during periods of high gas consumption, at least some of the gas will evaporate stored liquefied gas by extracting heat from the cryogenic agent and recovering it due to the heat extraction "

009831/1564

BATH ORIGINAL

37 382 · '- 5 transferred to the original phase state.

The object on which the invention is based, namely a method for the interim storage of a normally gaseous substance, ie a substance that is gaseous at ambient temperature and pressure, in particular for the interim storage of natural gas, which can be carried out without great expense, is based on a process wherein the gas at least partly liquefied and stored in this state and a "later time _r ~ of the invention evaporates -is, characterized achieved, according to that the gas at a first, higher pressure to the heat exchange with a cryogenic agent at a Temperature below the boiling point, the gas is brought at this higher pressure, so that at least part of the gas is liquefied and that at the later point in time the pressure of the at least partially liquefied gas is lowered to a second, lower pressure at which its boiling point is below the temperature of the cryogenic agent, so that de r liquefied part of the normally gaseous gas

evaporates and removes the heat of evaporation from the eryogenic agent.

Preferably, a cryogenic agent is used, its Phase transition temperature between the boiling point of the gas at the first, higher pressure (condensing pressure) and the boiling temperature at the second, lower pressure (evaporation pressure) lies. The choice of the melting point of the cryogenic agent has proven to be particularly advantageous Phase transition temperature proven. ,

Even if so far the application of the invention essentially with respect to natural gas, i.e. hydrocarbon gas distribution systems has been explained, which can in particular be very large Ga ßdistribution systems, - the Invention with the same advantage in other springs distribution system use, in which the gas is sufficiently under «

■ ' .: R -.-. -0090-31 / 159 *

\ BAD ORIGINAL

1A-57 382 - 6 -

condenses or evaporates at different temperatures depending on the pressure. The selection of a cryogenic agent with a phase transition temperature between the appropriate boiling points presents no difficulty to those of ordinary skill in the art. If the gas is natural gas, the boiling points mentioned will normally be those at a pressure of 30 and 12 atm. correspond, and these boiling points of the methane portion are around 175 ° K and 15 ° K. For this reason, EIC "neb for natural gas intermediate storage gemäli the invention insbesoiidere a cryogenic medium having a melting point at about 160 ° to 170 ⁰ K. Such a suitable cryogenic agent is isooctane.

So that the cryogenic agent does not have to be removed too much cold during the process, it is useful that To pre-cool gas before it is brought to heat exchange with him.

The invention is also based on the problem of a device for the intermediate storage of a normally gaseous Specify the substance that is particularly suitable for carrying out the specified process. Such a device according to the invention is characterized by a device in which the gas for heat exchange with a cryogenic φ means brought v / earth, and through a storage room for the storage of liquefied gas. Through the heat exchange If the gas is to be converted into the liquid phase, the cryogenic means transfer the heat of evaporation to this. withdraws. The cryogenic agent should for its part be such that it is itself a consequence of the heat transfer. ö or heat absorption passes from one phase to another, preferably from the solid to the liquid.

In a special embodiment of such a device, such a device for the storage or storage of burning

- 7 -009831/1584 _{BAD OmmL}

1A-37 382. '

gas as a function of consumer demand caused by the gas pressure is regulated in the distribution system, a storage 'space for the liquefied gas, for example in the form of a or several pipes branching off from a main line, preferably directed downwards, so that the liquefied gas collects in them due to the force of gravity. The storage room is at least partly due to a self above its freezing point surrounded cryogenic agent. The freezing point of the cryogenic agent, which can for example be a hydrocarbon, is approximately in the middle between the boiling points of the in the 'gas distribution system contained gas in the main line to the The highest and lowest pressures that occur. So so little as possible of the one between the gas and the If the heat exchanged by the cryogenic agent is lost, the outer walls of the container for the cryogenic agent should be thermally insulated be. The container itself can be made of heat-insulating material Material, e.g. polyurethane foam / or another insulation material, which is used for the cryogenic agent is impermeable or has been made impermeable. The container can also consist of a jacket, for example made of metal,

because s on which a thermal insulation agent was applied or coated with this, be surrounded. Since considerable differences in pressure in the main line and the storage space occur, m care must be taken that a leakage outlet of the stored gas kept as low as possible, preferably completely prevented. The storage space is therefore preferably formed by a container made gas-tight.

The gas distribution system will usually be based on one approximately the ambient temperature are located, so that the difference between this temperature and ■ that of the cryogenic agent should normally be as large is that this has already completely "ended" its phase transition "■" -. '■'

009831/1564

BATH ORIGINAL

1A-37 382 - 8 -

when the gas has just cooled to its temperature but has not yet condensed much. To the temperature difference between the gas and the cryogenic agent with which they are brought into heat exchange to lower, the gas is preferably pre-cooled by means of a between the main line and the container for the cryogenic Means provided storage ikis exchange device or System for heat (heat storage / exchange system).

An embodiment of the device according to the invention for Storage of gas depending on consumer needs, which is controlled by the pressure in the gas distribution system, comprises a first cooling device with which the temperature of a subset of the gas in the distribution system is lowered so far can be that its liquefaction by a second cooling device is enabled, which as a heat exchange system is formed with a cryogenic means comprising a device by means of which the precooled Gas for heat exchange with a suitable cryogenic agent at a temperature below its phase transition temperature brought v / earth, which is approximately in the middle between the boiling points of the gas at the highest and is the lowest pressure prevailing at that point in the gas distribution system. If the liquefied as a result of a pressure drop Gas evaporates again by withdrawing the required V / arm from the cryogenic agent. And that at the same time returns to the original "cold" phase, the gas should flow back through the pre-cooler to warm itself up and at the same time to cool down the pre-cooler.

It has already been mentioned that some hydrocarbons are present in natural gas The higher molecular weights are present at higher temperatures than methane, which is the main component of the natural gas, boil. The reason for this is that in the

- 9 -009831/1564

BATH ORIGINAL

-. - 2QQ2 $ 52

.1A-37 382 - ". ■ '■■■ - ■

Evaporation stage of the methane process according to the invention evaporates faster than these higher-boiling components to do. These'have therefore the tendency to remain in the liquid phase and can thus be used later properly Interfere with the puncture of the bearing device. For this reason it can be advantageous if an undesirable higher-boiling point Natural gas containing constituents is subjected to a pretreatment in which these are removed. Such Pretreatment can take place, for example, as part of cooling.

In carrying out a pretreatment of the natural gas, Hfl has successfully used a first cooling device as indicated above, which is arranged in front of the part of the plant which contains the cryogenic agent. The first cooling device, for example in the form of a (pebble) stone bed, is designed so that the condensed higher-boiling components flow off into a sump or into another liquid collector, while the cooled methane, as before, is used to exchange heat with the eryogenic Fund flows on. The Vorküliler may also include other Jj having ¹ IUs sigkeitssammler ^ for example cup-shaped structure ,, or it may be made of corrugated metal strips which are provided on liquid collection floors (eg ffranld Pack) composed!, Or. Λ he can eventually contain a porous material ,, .What absorbs the condensed higher hydrocarbons.

As also already indicated, if this is deemed appropriate or necessary, the whole or a part of the plant parts of the intermediate storage device are thermally insulated be. Because the individual parts of the system are relatively small The whole device can be built up in a compact manner be designed to be transportable and thus sufficient mobile in order to satisfy a need that only occurs occasionally and possibly to facilitate transport by ship

'■■ -.' ■■■■■■ .- ■ - ■. ".:" '■, ..- ■■': ■; ■■ - '■ ~ ίο- - ■:

BATH ORIGINAL

1A-37 382 - 10 -

of gases in liquefied form and re-evaporation during Unload to serve.

For example, a device according to the invention is also provided for liquefying gas at the gas source, for example at the wellhead, to use so that the liquefied gas then to a point for distribution to the Consumers can be transported, where the evaporation of the liquefied gas and, as a result, the Cooling of the cryogenic agent takes place, which in turn is then used to liquefy a next charge high pressure gas can be used.

The gas pressure occurring at the drill head is often of the order of about 70 atm. and about it, so that a Cryogenic agent used can have a phase transition temperature above the boiling point of the natural gas at this pressure, but below the boiling point at the pressure with which the gas is delivered to the consumer will; this pressure can fluctuate within wide limits depending, inter alia, on the distance of the consumer from the evaporation point and the required gas delivery pressure.

The construction of the device in which the liquefaction and storage of the gas is to take place exerts an influence the overall efficiency or the overall economy · of the storage or interim storage system, as some execution forms of heat exchangers more effective than others the rapid heat transfer to and from the cryogenic With:; e ~ can effect by presenting a larger surface area and allowing the cryogenic agent to interact with it remains in contact during and after the phase transition or phase transition. The usual rules apply here. regularities of heat exchange. This is why it should

008831/1584 " ¹¹ "

BATH ORIGINAL

.. ■ ·· ■ '1A-37 382. ''

■ '- 11 -'. ■■■■■■. '.' ■

the material of the membrane or the heat exchange surface between the gas and the cryogenic agent have the highest possible thermal conductivity in order to facilitate the passage of heat. "It must also be taken into account in a known manner that pressure differences between the gas and the cryogenic agent can occur in order to avoid destruction or perforation of the heat exchange with the result of contamination. Examples of heat exchangers which fully meet these conditions , preferably have heat exchange surfaces between the gas and the cryogenic agent made of metal, such as copper, and include those in which the gas is contained in a space largely completely surrounded by the cryogenic agent, or in which, conversely, the gas above and W

around the surface of a container or containers in which the cryogenic agent is contained flows. The training should also be such that condensate, and either unwanted condensate or condensate to be stored separately LPG, withdrawn from the storage space or the pre-cooler v; can earth.

Due to the low working temperature of the method and the device according to. The invention and the fact that a perfect thermal insulation is not achievable and ultimately due the fact that the phase transitions from thermodynamic Reasons cannot be completely reversible, Jj becomes the system for cutting off producer tips described here Slowly use up the cold content of the cryogenic agent by adding it to the supply system. the gas escaping from the storage device will be colder than it was when entering. For this reason, the cryogenic means and possibly also the precooler must be used from time to time be cooled again to a temperature below the phase transition temperature. moderately by the introduction of liquefied gas from one External source in the storage room, so that the cryogenic,

-. 19 _

009831/1564

1A-37 382

- 12 -

see means to the required low temperature yourself thereby cools down.

Although the selection of the cryogenic agent depends on the too phase transition used and the temperature of the required phase transition depends, which in turn depends on the Type of gas to be stored and the range in which the gas pressure can fluctuate depends, it has been found that for the compensation of natural gas generation peaks within the scope of a distribution network, the line pressure of which is between a maximum pressure of 30 atm. and a minimum pressure of 12 atm. fluctuates, isooctane, which has a melting point of about 165 ° K, is particularly suitable.

If the chosen phase transition temperature of the cryogenic agent is its boiling point, the phase transition can temperature also changed or the special conditions of the system can be adjusted by pressurizing its container. If suitable pressure equipment is provided, For example, the natural gas itself can be used as a cryogenic agent.

The invention and advantageous details of the invention are based on a drawing of several exemplary embodiments explained in more detail.

It shows:

Pig. 1 schematically parts of a gas distribution system with a device for cutting off natural gas generation sspitζen through intermediate storage of gas according to the invention;

Pig. 2 a vertical section through a memory outlet

00 9831/1564

BATH ORIGINAL

1A-3? 382 ■■; - ■ - ■■ · ■■ - ■

exchange device for latent heat according to the invention; . ; ■

Fig. 3 shows a section through e, irt-e Fig. 2: corresponding but modified game exchange facility - ■ ' ■ device for latent heat; . ■ <

4 shows a vertical section through another ^. ■ Embodiment of a storage exchange device for latent heat;

^{: ::} - · ■■ ■ - ■■:.: ■■■ '■' ■ ': ■. ι

FIG. 5 shows an upstream of a coast

Natural gas deposits anchored liquefied gas tankers, "- partly in section; and ■ ■ /

Fig. 6 is a plan view of a partial section along the Line -I-I in Fig. 4>

1 shows a gas distribution pipeline system 1 which connects a gas source A to a consumer or consumer area 5 and to which a precooler 2 and a storage exchange device for latent heat are connected . '- ■ -: ■' -. '"■■ V- ■■" ^

In the device according to FIG. 2, the heat exchange surface is used 6 both as a container for liquefied gas and " as a V / and a container 9 for cryogenic agent. A valve 7 can remove unwanted condensate from the storage space withdrawn and liquefied gas admitted into the storage space at ~ given intervals to allow the cryogenic Means to compensate for cold losses to cool down. With 8 is the cryogenic agent that is in the by means of a thermal insulation 10 insulated container 9 is included; designated.

00 8 8 31/156 4

BATH ORIGINAL

1A-37 382

- 14 -

The embodiment according to Pig. 3 differs from that according to Fig. 2 in so far as the eryogenic agent is contained in small hollow bodies 11 of approximately spherical shape. The. Hollow body can consist of gelatine ball cushions or capsules, which the gas flows over and around with those of FIG. 3 correspond to have been provided with the same reference numerals.

In the embodiment according to FIG. 4, a precooler 22 and a container 29 for liquefied gas are provided as separate units within a common housing 23 and are surrounded by perlite thermal insulation 24. Porous rock 30 (for example pumice rock) is filled into the precooler 22. The liquid-storage space is made of copper tubes 25 by a (tubular) Soil 34- rich in an N headspace 26, towards which they are _open} downwards. The container 29 surrounding the tubes 25 is filled with a cryogenic agent 27. The space with the eryogenic agent is secured against overpressure with a space disk 28. The initial cooling of the cryogenic agent 27 takes place by introducing a suitable refrigerant into the tubes 25 via a filling tube 31. A line 32 is used to connect the device to a gas line (not shown). The line 33 connects the precooler 22 to the head space 26.

In the embodiment according to FIG. 5, natural gas is taken from the natural gas source via a discharge line 21 into a distribution pipe soffit 42 and then through within insulation provided precooler 43 in by a cryogenic means 46 contained in an insulated container 47 surrounded o Pipes 45 initiated. .

As part of a preliminary to the presentation of the underlying principle of the invention Prin '/' ipb became the iiohlenv / assorstorf ^ as

- 15 00983W1584

BATH ORIGINAL

1A-37 382.

- 15 -

Butane is used as a gaseous substance and cyclohexane is used as a the cryogenic agent. The device essentially had the form of training according to Pig. 4 except that no. Pre-cooler was used because "the operating temperatures were close to the ambient temperature. The device had the following design features: '

The storage room consisted of 25 square copper pipes with a length of 110 cm, an outside diameter of ₁ 25 cm and an inside diameter of. 0.95 cm and., A distance between the ear axes »of 2.5 cm. As. cryogenic agent. 18 l of cyclohexane with a melting point of 2? 9v5 K were used. This was cooled to a temperature below the melting point by introducing a small amount of liquid natural gas into the copper pipes. The liquid natural gas was allowed to evaporate from the device, whereupon n-butane, which has a boiling point of about 288 ^° K at 30 atm. and 273 ° K at 15 atm. has, in the head space with 30 atm. was initiated. After 10 minutes the pressure rose to 15 atm. lowered. This cycle was repeated at intervals of 24 minutes and the following results were obtained:

. ■ '■ - TA BE LL Ε "I

Cycle ITr. ;, Weight of liquid Gev /. to ver

n-butane steamed n-butane

Gram gram

1 ' .24 24 2 22nd 22nd 16 20th 20th

In a second attempt, liquefied natural gas is used in one Device as shown in Kg, 5 and in the the pre-cooler was filled with lumps of granite.

■ - 16 - 009 831/1564

BATH

1A-37 382

- 16 -

The liquefied gas storage chamber consisted of copper tubes 213 a length of 120 cm, an outer diameter of 3 ₅ 75 cm and a wall thickness of 0.15 cm. These were again arranged in a square; the distance between their axes was 5.5 cm. 460 liters of isooctane with a melting point of 165 ° K were used as the cryogenic agent.

The pre-cooler was cylindrical and 1 m in diameter and 2 m in length from 2,600 kg granite grains about 2 cm in diameter. The whole device was of perlite heat insulation Surrounded with a thickness of 1 m.

The cryogenic agent was kept at a temperature below its melting point by introducing 100 kg of the liquefied methane into the storage space from which this could evaporate through the pre-cooler, cooled.

Since this device was only the size of a pilot system, the cold losses were due to inadequate thermal insulation and other circumstances justified in the relatively small size above average. This the Losses that determine profitability can be significant with improved thermal insulation and larger devices to be humiliated. The results shown in Table II were obtained with the pilot plant.

TABLE II BAD ORIGfNAL

009831/1564

IA-37 382

T A -.17--. ver
steams E II Evaporation
pressure
Atm. BELL 82 Liquefaction
supply pressure
Atm. Attempt no.
(Cycle time
24 hours) Geν /, an ver
liquid
Natural gas in kg 72 .12.5 ver
liquid 61 . 27.5. 12.5 1 82 51: 27.5 12.5 ' 2 72 40 27.5 12.5 3 ■■ ■. «. - .61 31. 27.5 12.5 ■ 4 .I -: - 51 20th 27.5. 12.5. · ■■■ VJl 40 10 · 27.5, . 12.5 .. 6th 31 0.5 2?, 5 ■ 12.5 7>_; ■ χι / 20 - 27.5 12.5 .-. . 8th x-AO 27.5 - - 9 - 0.5 - io ■■■■, -, ■ - . -.

PATENTAWSPHÜCHE:

31/1504

Claims (13)

1A-37 582 - 18 - PATENT APPLICATION HE 1)) Procedure for interim storage of a normally gaseous substance, in particular natural gas, in which the gas at least partially liquefies and at a higher pressure stored in the liquefied state and evaporated again at a later point in time and possibly its pressure is lowered, characterized in that the gas at a first, higher pressure for heat exchange brought with a cryogenic means at a temperature below the boiling point of the gas at that higher pressure is, so that at least a part of the gas is liquefied, and that at the later point in time the pressure of at least partially liquefied gas is lowered to a second, lower pressure, at which its boiling point is below the temperature of the cryogenic agent, so that the liquefied part of the gas evaporates. 2) Method according to claim 1, characterized in that g e-k e η η.- ζ e i c Ii .α. e t that a cryogenic agent is used whose phase transition temperature is between the boiling point of the gas at the first, higher pressure (condensing pressure) and the boiling temperature is at the second, lower pressure (evaporation pressure). 3) Method according to claim 1 or 2, characterized in that the melting point of the cryogenic agent is selected as the phase transition temperature. 4) Method according to one of claims 1 to 3, characterized · that in the storage of Natural gas is a cryocenic agent with a melting point between - 19 - see 160 and 1 ^r / 0 ° K is used. 009831/1564 ■ 1A-37,382; . ' 5) Method according to claim 4-., Dad ^ -refi ge kenn-, draws that isooetane as an eryogenic agent is used. · ' 6) Method according to one of claims 1 to 5 »thereby g e k e η η ζ e i c h η e t that the gas is pre-cooled, before it is brought to heat exchange with the cryogenic agent. 7) Device for interim storage of a normally gaseous substance, in particular natural gas, preferably for implementation of the method according to one of claims 1 to 6, characterized by a facility -in wel- .Q rather the gas for heat exchange with a cryogen! see means (8, 27, 46) can be brought and. a game room rather clears it up (9 Fig. 3), 25j 4-5) for the storage of liquefied gas. 8) Device according to claim 7 ₃ thereby geke η η - ζ ei ch η et that the device has a container {9 (Fig. 2), 1i, 29, 47) for the cryogenic means (8, 27, 26), a storage space open to a feed device for the gas (9 (Fig. 3) _- 25, 4-5) and means with the help of which at least part of the contents of the storage space can be brought to the cryogenic! see means for heat exchange can. *. · A 9) Device according to claim 8, characterized geke η χι ζ eich η et that the feed device is a gas line (1; 32, 33; 41, 42), in particular a natural gas line. 10) Vorriehtong according to one of claims 7 ^ is 9 »thereby g e k e ή η ζ e i c h η e t *. that the establishment a Pre-cooler (2, 22, 43) for the gas is connected upstream. 009831 / 15S4 BATH ORIGINAL 1A-37 382 11) Device according to one of claims 8 to 10,
characterized in that the storage space has a number of pipes open to the gas supply device
('25, 4-5). 12). Device according to one of Claims 7 to 11, characterized in that the container for the
cryogenic means (8) from a number within the
Storage space (9 (Fig. 3)) provided hollow body (11). 13) Device according to one of claims 7 to 12, .due to this characterized in that it is designed to be transportable is. 009831/1 564 Jf Blank page