EP1677891A1 - Installation et procede de purification d un liquide cryogen ique. - Google Patents
Installation et procede de purification d un liquide cryogen ique.Info
- Publication number
- EP1677891A1 EP1677891A1 EP04805747A EP04805747A EP1677891A1 EP 1677891 A1 EP1677891 A1 EP 1677891A1 EP 04805747 A EP04805747 A EP 04805747A EP 04805747 A EP04805747 A EP 04805747A EP 1677891 A1 EP1677891 A1 EP 1677891A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- installation
- axis
- circulation
- downstream
- cryogenic liquid
- 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.)
- Withdrawn
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 40
- 238000009434 installation Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 42
- 238000001914 filtration Methods 0.000 claims abstract description 38
- 238000009413 insulation Methods 0.000 claims abstract description 17
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000011045 prefiltration Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 239000012774 insulation material Substances 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000012530 fluid Substances 0.000 abstract description 4
- 239000011810 insulating material Substances 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 15
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 239000012535 impurity Substances 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 229920002799 BoPET Polymers 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/08—Separating gaseous impurities from gases or gaseous mixtures or from liquefied gases or liquefied gaseous mixtures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/40—Special measures for connecting different parts of the filter
- B01D2201/403—Special measures for connecting different parts of the filter allowing dilatation, e.g. by heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/84—Processes or apparatus using other separation and/or other processing means using filter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/42—Nitrogen or special cases, e.g. multiple or low purity N2
Definitions
- the present invention relates to an installation for purifying a cryogenic liquid, of the type comprising: a liquid circulation pipe, comprising an upstream portion and a downstream portion. a filtration member, interposed between the upstream portion and the downstream portion and in which is formed at least one channel extending along a circulation axis between an open end and a closed end; said channel being delimited, at least partially, by a porous wall (of porosity preferably less than or equal to 0.2 ⁇ m).
- This process applies to the production in particular of liquid nitrogen or of sterile carbon dioxide at high flow rate (greater than 1 t / h), in particular for the food or electronic industries, or in the medical field.
- a cryogenic liquid To sterilize a cryogenic liquid, it is known to pass it through a porous filter with a porosity substantially equal to 0.2 ⁇ m, in order to retain bacteria, particles or other potentially dangerous substances or organisms in the filter.
- the filter must be maintained at a temperature close to the temperature of the liquid, in order to avoid the formation of bubbles or microbubbles of diameter greater than or equal to 0.2 ⁇ m, and liable to clog the filter.
- the filter In an installation of the aforementioned type (US-A-4,759,848), the filter is thus immersed in a tank of sub-cooled cryogenic liquid. Such installations are not entirely satisfactory.
- the main purpose of the invention is to remedy this drawback, that is to say to create an installation for purifying a cryogenic liquid, which is simple and easily usable on an industrial scale.
- the invention relates to an installation of the aforementioned type, in accordance with claim 1 below.
- the installation according to the invention may include one or more of the following characteristics, taken alone or in any technically possible combination: - said first sealing means are kept in compression by the filtration member and said first portion at the temperature of the cryogenic liquid intended to be purified. - The part of the first portion adjacent to said open end extends along the axis of circulation (Y-Y '). - Said first portion is constituted by said upstream portion the angle formed by the general axis (XX) of this upstream portion and the axis of circulation (Y-Y ') being between approximately 10 ° and approximately 30 °. - Said angle is substantially equal to 15 °.
- the axis of circulation (Y-Y ′) is substantially vertical and said downstream portion opens out opposite an area of the porous wall close to the closed end of said filtration member, which is the upper end of this member .
- a pre-filtration unit with a porosity greater than or equal to 100 ⁇ m is placed in the upstream portion of the pipe.
- Said porous wall has a porosity less than or equal to 0.20 ⁇ m.
- the invention further relates to a method for purifying a cryogenic liquid, characterized in that it is implemented in an installation as described above.
- FIG. 1 is a view of a first installation according to the invention
- - Figure 2 is a sectional view along a median vertical plane of a detail of Figure 1
- - Figure 3 is a sectional view along a median vertical plane of a detail of a second installation according to the invention.
- the installation shown in Figures 1 and 2 is intended for the production of a sterile cryogenic liquid, with a flow rate greater than 1 t / h.
- the cryogenic liquid which can for example be nitrogen, argon or carbon dioxide, is intended, after purification, to be used in particular in the food industry, electronics or the field of health. As illustrated in FIG.
- the installation 11 comprises a pipe 13 provided with a double envelope 14 of thermal insulation, and a filtration assembly 15.
- the terms “upstream” and “downstream” s 'hear with respect to the direction of circulation of the cryogenic liquid in the installation 11 (from left to right in Figure 1, as indicated by the arrows F).
- Line 13 extends along a longitudinal axis XX 'between an upstream inlet 17, intended to be connected to a source S of contaminated cryogenic liquid, and a downstream outlet 19, intended to be connected to a device D d use of purified cryogenic liquid. It comprises an upstream portion 21 and a downstream portion 23.
- the upstream portion 21 of the pipe 13 extends between the upstream inlet 17 and the filtration element 15.
- the upstream nozzle 25 comprises a transverse conduit 29 provided with a valve 31.
- the nozzle 25 is intended to be connected to a source of steam or to a source of dry gas.
- the pre-filtration member 27 is disposed inside the upstream portion 21. It comprises a porous body of porosity, for example greater than 100 ⁇ m, which retains the impurities of large size which may be present in the source of cryogenic liquid. to be purified. This member 27 prevents these impurities from deteriorating and obstructing the subsequent filtration element 15.
- the downstream portion 23 extends between the filtration element 15 and the outlet 19.
- the filtration element 15 comprises a lateral branch 35 of the pipe 13, in which is disposed a filtration member 37, a thermal insulation member 39 and sealing means for these members.
- the branch 35 extends between, on the one hand, an outlet end 45 of the upstream portion 21 and, on the other hand, an inlet end 47 of the downstream portion 23 and a flange 49 provided at the free end of branch 35.
- the branch 35 extends parallel to an ascending circulation axis Y - Y ', inclined relative to the longitudinal axis XX.
- the angle formed by the circulation axis YY 'and the longitudinal axis XX is greater than 10 °. In the example shown in Figure 2, this angle is substantially equal to 15 °.
- the filtration member 37 comprises a membrane body made of micro-porous ceramic. This body has an elongated shape which extends along the axis of circulation Y-Y '. It comprises a set of channels 51, parallel to the axis of circulation Y-Y '. A single channel 51 is shown in Figure 2. These channels 51 open at the upstream end 53 of the filter member 37 and are closed at the downstream end 55 of this member 37. The channels 51 are delimited by walls lateral filtration 57, porosity less than 0.22 ⁇ m.
- the porosity of the walls 57 is substantially equal to 0.2 microns.
- the upstream end 53 of the filtration member 37 is disposed opposite the outlet end 45 of the upstream portion 21, which extends in the part 58 in the vicinity of this end along the axis of circulation YY '.
- a zone 59 of the porous wall 57 is disposed opposite the inlet end 47 of the downstream portion 23.
- the downstream portion 23 is bent at this end 47, and the angle formed by the circulation axis YY 'and the axis ZZ' of the downstream portion, in the vicinity of its inlet end 47, is substantially equal to 90 °.
- the fluid to be filtered enters the filter member 37 through the channels 51 and exits from this member 37 through the side wall 57 of filtration to be collected in the downstream portion 23.
- the angle formed between the 'longitudinal axis XX and the circulation axis YY' is between 10 ° and 30 °, in order to limit the pressure drop through the filter member 37, while allowing easy access to the member 37 from the outside of the pipe for maintenance operations.
- the insulation member 39 comprises a hollow tubular body with a diameter less than the internal diameter of the branch 35.
- This body extends along the axis of circulation YY 'between a lower end 65 facing the member 37 and an upper end 67, provided with a flange 68 bearing watertight on the flange 49 of the branch 35, the assembly being sealed by a collar 70.
- the length of the insulation member 39 is chosen so that the temperature at its upper end 67, when its lower end 65 is immersed in cryogenic liquid, is substantially equal to the temperature prevailing outside the installation 11.
- the sealing means comprise a filter support 71, an upstream cup 73, a downstream cup 75, a central screw 77 and three annular seals 79A, 79B and 79C.
- the filter support 71 comprises an internal annular flange, disposed in the pipe 13 between the upstream portion 21 and the branch 35.
- the upstream cup 73 rests on the filter support 71 and receives the upstream end 53 of the filtration 37.
- This upstream cup 73 comprises in its bottom a plurality of lights 83 facing the channels 51. A single light is shown in FIG. 2.
- the downstream cup 75 receives the downstream end 55 of the filtration member 37 and is received in a recess 76 in the lower end 65 of the insulation member 39.
- the central screw 77 comprises a head 85 provided with a transverse pin 86 bearing on the upstream cup 73, and a threaded portion 87 screwed in a tapped hole in the insulation member 39. It further comprises a central portion 89 which connects the head 85 to the threaded portion 87.
- This central portion 89 is disposed in a channel 51 of the filtration member 37.
- Upstream cups 7 3 and downstream 75 are kept in compression between the filter support 71 and the insulation member 39.
- the mounting of the filtration member 37 and of the isolation member 39 in the branch 35 preferably takes place in the following manner. Initially, the screw 77 is screwed into the insulation member 39. The downstream cup 76, the filtration member 37, and the upstream cup 73 are then threaded successively on the screw 77. The pin 86 is then placed in the head 85, in order to fix the cups 73 and 76, as well as the filter member 37 relative to the insulation member 39.
- the assembly thus formed is mounted under axial stress corresponding to a compression of at least 3 millimeters in the branch 35, bearing on the filter support 71, and crimped using the collar 70.
- the stress applied to these cups 73 and 75 at room temperature is calculated so that the relaxation of this constraint compensates for the contraction of the cups 73 and 75, of the filter member 37 and of the insulation member 39 at the temperature of the liquid cryogenic intended to be purified.
- the seal between on the one hand, the filter support 71 and the filter member 37, and on the other hand the filter member 37 and the insulation member 39 is ensured, despite the relaxation of the stresses within the upstream and downstream cups 73 and 75, since these are maintained in slight compression.
- the annular seals 79A and 79B are arranged in corresponding grooves provided in the vicinity of the upper end 67 of the insulation member 39 in order to seal between the inside and the outside of the pipe 13.
- the gasket 79C is compressed by the flange 68 in a circular groove in the flange 49.
- the double insulation envelope 14 covers the whole of the pipe 13 and the branch 35.
- the outer jacket 91 also comprises an annular bellows 95 for compensation, which can contract or extend longitudinally along the axis XX ′, depending on the length variations of the pipe 13, under the effect of temperature variations.
- the annular space between the liners 91 and 92 thus defines a chamber 93 sealed under vacuum.
- a laminar insulation material is placed in the chamber 93 and is kept there under vacuum.
- An example of insulation material includes alternating layers of glass or mylar fabric, and aluminum foil.
- the pressure in the chamber 93 is between 5 10 "4 and 10 " * mbar, preferably less than 10 " ⁇ mbar.
- the upstream connection 25 is connected to a source of steam and the downstream connection 33 is connected to a vent. Steam is then circulated for a predetermined time, between the upstream and downstream nozzles 25 and 33, successively through the upstream portion 21, the pre-filtration member 27, the filtration member 37 and the downstream portion 23 , in order to sterilize the installation 11 (this for example to implement the recommendation of the Pharmacopoeia of 121 ° C for 90 minutes).
- the upstream connection 25 is connected to a source of dry gas under pressure. Dry gas is then circulated under pressure to effect complete drying of the installation 11 (for example 105 ° C. for 90 minutes).
- the inlet 17 of the line 13 is connected to the source of pressurized contaminated liquid nitrogen.
- the nitrogen flow introduced into the pipe 13 is gradually increased, in order to fill the pre-filtration member 27, then the filtration member 37, which reach a temperature close to the temperature of the cryogenic liquid. During this temperature drop, the elements of the installation in contact with the cryogenic liquid contract. The contraction of the pipe 13 is compensated by the bellows 95.
- the cryogenic liquid passes through the pre-filtration member 27 to filter the impurities of large size, then reaches the filtration member 37.
- the contraction of the member filtration 37 in contact with the cryogenic liquid is compensated by the relaxation of the stresses within the upstream and downstream cups 73 and 75, which are maintained in slight compression, so that the seal at the upstream and downstream ends 53 and 55 of the filter member 37 is maintained. Note also that this mechanical compression is added to the temperature of the cryogenic fluid differential compression between stainless steel and ceramic).
- the cryogenic liquid then enters the channels 51 of the filtration member 37 and passes through the porous wall 57 in a transverse direction relative to the axis of circulation Y-Y '. During this passage, all of the impurities and / or microorganisms of size greater than or equal to 0.22 ⁇ m are retained in the channels 51.
- the purified liquid nitrogen is then collected in the downstream portion 23 up to the outlet 19 of this portion 23 where it is delivered to the user.
- This nitrogen is sterile.
- the upstream portion 21 and the downstream portion 23 of the pipe 13 have an internal diameter of 33.7 mm DN25, for a nominal pressure of 7 bar absolute.
- the filter member 37 has a length of between 600 and 1000 mm and a filtration surface of between 0.15 and 0.25 m 2 .
- the internal diameter of the pipe 13 is 21.3 mm DN15, for a nominal pressure of 40 bar absolute.
- a second installation 101 according to the invention is shown in FIG. 3.
- the angle formed by the circulation axis YY ′ and the axis of the pipe XX is equal to 90 °, so that the YY 'axis is vertical. This angle makes it possible to limit or even exclude the condensation of water on the insulating member 39.
- the downstream portion 23 opens facing a zone 59 of the filtration wall which is close to the upper end 55 of the filtration member 37. This arrangement makes it possible to fill the filtration member 37 substantially completely. and the annular space which surrounds it with cryogenic liquid, before this liquid is delivered to the outlet 19 of the downstream portion 23. Thanks to the invention which has just been described, it is possible to have a particularly simple and inexpensive installation for the production of a sterile cryogenic liquid.
- This installation makes it possible to achieve a production rate greater than 1 t / h. Furthermore, the sterilization and maintenance operations of such an installation are particularly simplified by the structure of the filtration element. But it should above all be emphasized that the major advantage of such an installation is that it can be easily installed "in line" on an existing pipe for supplying cryogenic liquid, without the need for any immersion in a bath of cryogenic liquid. .
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0350712A FR2860988B1 (fr) | 2003-10-20 | 2003-10-20 | Installation et procede de purification d'un liquide cryogenique |
| PCT/FR2004/050504 WO2005039734A1 (fr) | 2003-10-20 | 2004-10-18 | Installation et procede de purification d'un liquide cryogenique. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1677891A1 true EP1677891A1 (fr) | 2006-07-12 |
Family
ID=34385415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04805747A Withdrawn EP1677891A1 (fr) | 2003-10-20 | 2004-10-18 | Installation et procede de purification d un liquide cryogen ique. |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20070075011A1 (fr) |
| EP (1) | EP1677891A1 (fr) |
| JP (1) | JP2007508932A (fr) |
| AU (1) | AU2004283514A1 (fr) |
| CA (1) | CA2542429A1 (fr) |
| FR (1) | FR2860988B1 (fr) |
| WO (1) | WO2005039734A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7472551B2 (en) * | 2005-11-16 | 2009-01-06 | Praxair Technology, Inc. | Cryogenic process system with extended bonnet filter |
| US10113793B2 (en) * | 2012-02-08 | 2018-10-30 | Quantum Design International, Inc. | Cryocooler-based gas scrubber |
| WO2018169794A1 (fr) * | 2017-03-13 | 2018-09-20 | Cryterion Medical, Inc. | Système de remplissage de récipient de fluide |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3366240A (en) * | 1965-07-14 | 1968-01-30 | Eaton Yale & Towne | Line strainer indicating device |
| SU435421A1 (ru) * | 1972-12-26 | 1974-07-05 | Ю. Ф. Куликов, В. А. Ложкин , Н. К. Новиков | Фильтр для криогенных сред |
| US4759848A (en) * | 1985-01-23 | 1988-07-26 | Mg Industries | Sterilization of cryogenic liquids by ultrafiltration |
| US4717406A (en) * | 1986-07-07 | 1988-01-05 | Liquid Air Corporation | Cryogenic liquified gas purification method and apparatus |
| US5533341A (en) * | 1995-06-07 | 1996-07-09 | Air Liquide America Corporation | Apparatus and method for producing and injecting sterile cryogenic liquids |
| US5913893A (en) * | 1996-12-24 | 1999-06-22 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process for the purification of a cryogenic fluid by filtration and/or adsorption |
| FR2757421B1 (fr) * | 1996-12-24 | 1999-01-15 | Air Liquide | Procede d'epuration d'un fluide cryogenique par filtration et/ou adsorption |
| JPH1190126A (ja) * | 1997-09-12 | 1999-04-06 | Tlv Co Ltd | 殺菌部材を有するストレ―ナ |
| JPH11210984A (ja) * | 1998-01-22 | 1999-08-06 | Dia Chemical Kk | 配管の異形部保温材 |
| FR2774006B1 (fr) * | 1998-01-23 | 2000-02-18 | Air Liquide | Installation et procede de filtration en phase liquide d'un fluide cryogenique |
-
2003
- 2003-10-20 FR FR0350712A patent/FR2860988B1/fr not_active Expired - Fee Related
-
2004
- 2004-10-18 CA CA002542429A patent/CA2542429A1/fr not_active Abandoned
- 2004-10-18 AU AU2004283514A patent/AU2004283514A1/en not_active Abandoned
- 2004-10-18 WO PCT/FR2004/050504 patent/WO2005039734A1/fr not_active Ceased
- 2004-10-18 EP EP04805747A patent/EP1677891A1/fr not_active Withdrawn
- 2004-10-18 JP JP2006536138A patent/JP2007508932A/ja not_active Withdrawn
- 2004-10-18 US US10/576,398 patent/US20070075011A1/en not_active Abandoned
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2005039734A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2860988A1 (fr) | 2005-04-22 |
| WO2005039734A1 (fr) | 2005-05-06 |
| FR2860988B1 (fr) | 2006-11-24 |
| CA2542429A1 (fr) | 2005-05-06 |
| US20070075011A1 (en) | 2007-04-05 |
| JP2007508932A (ja) | 2007-04-12 |
| AU2004283514A1 (en) | 2005-05-06 |
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