WO2004074603A1 - Distillation apparatus and method of transporting the same - Google Patents

Distillation apparatus and method of transporting the same Download PDF

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Publication number
WO2004074603A1
WO2004074603A1 PCT/GB2004/000542 GB2004000542W WO2004074603A1 WO 2004074603 A1 WO2004074603 A1 WO 2004074603A1 GB 2004000542 W GB2004000542 W GB 2004000542W WO 2004074603 A1 WO2004074603 A1 WO 2004074603A1
Authority
WO
WIPO (PCT)
Prior art keywords
column
combination
distillation
insulation structure
supported
Prior art date
Application number
PCT/GB2004/000542
Other languages
French (fr)
Inventor
Stephen John Gibbon
Original Assignee
Air Products And Chemicals, Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Air Products And Chemicals, Inc. filed Critical Air Products And Chemicals, Inc.
Priority to AU2004213622A priority Critical patent/AU2004213622B2/en
Priority to DE602004002389T priority patent/DE602004002389T2/en
Priority to US10/545,493 priority patent/US20060144684A1/en
Priority to EP04710419A priority patent/EP1595042B1/en
Publication of WO2004074603A1 publication Critical patent/WO2004074603A1/en

Links

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
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/0489—Modularity and arrangement of parts of the air fractionation unit, in particular of the cold box, e.g. pre-fabrication, assembling and erection, dimensions, horizontal layout "plot"
    • 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
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04945—Details of internal structure; insulation and housing of the cold box
    • 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/42—Modularity, pre-fabrication of modules, assembling and erection, horizontal layout, i.e. plot plan, and vertical arrangement of parts of the cryogenic unit, e.g. of the cold box

Definitions

  • the present invention relates to a distillation column in combination with an insulation structure or container.
  • the invention is primarily concerned with large distillation columns, for example columns having a diameter of about 3.5m (about 11 ft) or more, and is of particular application to cryogenic distillation columns.
  • the invention could also be employed with other separation columns such as hydrocarbon gas separation columns.
  • the maximum size of a cryogenic air distillation column is limited by a number of factors.
  • One such factor is the ability of the final column to be transported by road.
  • cryogenic air distillation columns e.g. those having a diameter of 3m (10 ft) or less
  • the combination is usually transported horizontally by road on the back of a lorry having a low load platform.
  • Such columns are usually transported on specially designed "transport saddle” structures with the insulation structure in place around the column.
  • One advantage of such an arrangement is that the column is delivered to site with the insulation structure, together with the necessary pipe work within the cold box, already in place.
  • the column and insulation structure combination is simply hoisted into position on site.
  • An insulation material, usually perlite is added to the cavity between the column and the inner wall of the insulation structure and the pipe work within the cold box is then connected to the pipe work of the remaining parts of the plant.
  • One advantage of shipping a conventional distillation column within the insulation structure is that the quality of the construction can be controlled to a greater degree. Cryogenic air separation units may be required almost anywhere. Most locations have airborne contaminants such as dirt and/ or grease and, in some locations, these contaminants will include corrosive contaminants, for example, salt (if the location is near the sea) or sand (if the location is in a desert) . Transportation of a fully assembled column within the insulation structure means that the internal components of the column are not exposed to any airborne contaminants on site.
  • Transport saddles have to be supported by shipping beams which form part of the insulation structure.
  • a further disadvantage is that the saddles impose significant local stresses in the wall of the distillation column to the extent that it is often necessary to thicken up the distillation column wall in the vicinity of the saddles.
  • a column having a diameter of about 6m (about 20 ft) is about the largest diameter column that can be transported by road fully assembled but, at present, it cannot transported within its insulation structure. This is because the saddles and shipping beams provided within the cold box would make the column and cold box combination too tall, even when provided on its side, to travel under all but the highest bridges. Therefore, the conventional proposal is to transport large columns to site, either as an assembled column (without the cold box) or as column parts. The column would then be erected on site and the insulation structure erected around the column.
  • a distillation column in combination with an insulation structure, said column being supported within said structure from interior corners of said structure.
  • the column may be a hydrocarbon distillation column but, in preferred embodiments, the column is a cryogenic air distillation column.
  • One advantage of supporting a column within an insulation structure from interior corners of the structure is that, for an insulation structure of given dimensions, larger columns may be transported by road than would be possible if conventional (non-removable) saddles and shipping beams are employed to support the column. In this way, assembly of large columns can take place in a controlled environment thereby reducing the risk of contamination of the internal components.
  • the present invention is, therefore, suitable for use with large columns having a diameter of at least 3.5m (11 ft) and is particularly suitable for use with columns having a diameter of about 5m (about 16 ft) or about 6m (about 20 ft).
  • the column of the present invention is usually supported using sets of radial supports provided between each corner of the insulation structure and the outer wall of the column.
  • the radial supports are typically made from material having low thermal conductivity giving low heat leak. Suitable materials include stainless steel.
  • Radial supports provided between each corner of the insulation structure and the column have an added advantage over saddles as they are suitable for use as seismic or wind supports once the column is erected on site whereas the saddles are only suitable for vertical or near vertical loading when the column is being transported.
  • more space within the insulation structure is available making it possible to run piping along the lower face of the insulating structure.
  • the number of sets of radial supports depends on the overall length of the column. Typically, two sets of radial supports are used although more could be used to reducing the bending stresses in the column.
  • the use of radial supports imposes significant local stresses in the wall of the distillation column.
  • the contact points between the supports and the column wall may be stiffened by increasing the thickness of the wall in the area of these points.
  • internal stiffening structures or "bracing" may be used.
  • the bracing may be made from piping or from structural sections having, for example, channelled, angled, T- or I-cross sections. Such bracing structures would usually be left inside the column when the column is in use as it would be undesirable to open the column on site to remove the bracing structure.
  • the bracing structure is preferably made from a material that is suitable for exposure to the conditions inside the column during use.
  • the bracing is typically made from the same material as the column. This material is usually selected from aluminium (or an aluminium alloy), stainless steel (various grades), 9% nickel steel or any other material suitable for cryogenic temperatures.
  • the use of internal bracing means that the thickness of the column wall is usually less than the thickness required to support the column both during transit and when erected on site, e.g. hoisted from the horizontal position to the vertical position, without an internal stiffening structure.
  • the thickness of the column wall is a function of operating pressure, design code, diameter of material of construction. These factors change from one plant to the next as is readily appreciated by the skilled person.
  • a method of transporting a column in combination with an insulation structure comprising supporting said column within said structure from interior corners of said structure and transporting said combination.
  • the combination may have any or all of the features described above.
  • FIGURE 1 is a representation of a radial cross-section of a conventional distillation column having a diameter of no more than 3m (10 ft) in combination with an insulation structure;
  • FIGURE 2 is a representation of an axial partial cross-section of the column and insulation structure combination depicted in Figure 1 ;
  • FIGURE 3 is a representation of a radial cross-section of a distillation column in combination with an insulation structure according to the present invention
  • FIGURE 4 is a representation of an axial partial cross-section of the column and insulation structure combination depicted in Figure 3;
  • FIGURE 5 is a representation of a radial cross-section of a column of the present invention comprising a irst internal stiffening structure
  • FIGURE 6 is a representation of a radial cross-section of a column of the present invention comprising a second internal stiffening structure
  • FIGURE 7 is a representation of a radial cross-section of a column of the present invention comprising a third internal stiffening structure.
  • a conventional cryogenic air distillation column 2 having a diameter of no more than 3m (10 ft) is located within an insulation structure or "cold box" 4.
  • the column 2 is supported on a transport saddles 6 and shipping beams 8 which take up space and make it difficult to run piping (not shown) to the lower surface of the cold box 4.
  • the column 2 is supported by two saddles 6.
  • Each saddle 6 is about 20% of the total length of the column 2 away from the nearest end of the column 2 respectively in order to reduce the bending stressing within the column 2.
  • the saddles 6 impose significant local stresses in the distillation column wall such that it is often necessary to increase the thickness of the column wall in contact with the saddles.
  • the column 32 is supported by radial supports 36 provided between corner members 38 of the frame of the cold box 34. Using radial supports in this way allows a column having a larger-than- conventional diameter to be transported in a given size of cold box.
  • space is available between the lower surface of the cold box 34 and the column 32 in which piping (not shown) is located.
  • FIGs 5 to 7 depict three arrangements of suitable internal stiffening structures.
  • the bracing is usually fabricated from tubular members or structural sections (e.g. channels, angles and T- or I-beams).
  • the column 52 in Figure 5 is braced with internal radial supports 54.
  • the column 62 in Figure 6 is braced with internal supports 64 provided in a square arrangement.
  • the column 72 in Figure 7 is braced with internal supports 74 arranged about the interior surface of the column wall.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

A distillation column (2), suitable for the cryogenic distillation of air or the thermal distillation of hydrocarbon gas, is supported within an insulation structure (4) from interior corners of said structure. Conventional distillation columns may be supported within an insulation structure using saddles and shipping beams. However, such support means have disadvantages such as placing significant stresses on the column during transportation. The present invention addresses these disadvantages and is particularly suitable for columns having a diameter of at least 3.5m (11 ft).

Description

DISTILLATION APPARATUS AND METHOD OF TRANSPORTING THE SAME
The present invention relates to a distillation column in combination with an insulation structure or container. The invention is primarily concerned with large distillation columns, for example columns having a diameter of about 3.5m (about 11 ft) or more, and is of particular application to cryogenic distillation columns. However, the invention could also be employed with other separation columns such as hydrocarbon gas separation columns.
At present, the maximum production of oxygen from an air separation plant is about 3500 metric tons/day (about 3860 short tons/day). Over the next few years, it is believed that there will be a need for plants that are capable of producing oxygen at a rate that is well over 3500 metric tons/ day (3860 short tons /day). One way to satisfy this demand would be to provide a plurality of conventional oxygen plants in parallel. However, another way would be to use a column having a larger diameter, e.g. a diameter of about 6m (about 20 ft).
The maximum size of a cryogenic air distillation column is limited by a number of factors. One such factor is the ability of the final column to be transported by road.
Conventionally, smaller cryogenic air distillation columns, e.g. those having a diameter of 3m (10 ft) or less, are usually transported within the insulation structure or "cold box". The combination is usually transported horizontally by road on the back of a lorry having a low load platform. Such columns are usually transported on specially designed "transport saddle" structures with the insulation structure in place around the column. One advantage of such an arrangement is that the column is delivered to site with the insulation structure, together with the necessary pipe work within the cold box, already in place. The column and insulation structure combination is simply hoisted into position on site. An insulation material, usually perlite, is added to the cavity between the column and the inner wall of the insulation structure and the pipe work within the cold box is then connected to the pipe work of the remaining parts of the plant. One advantage of shipping a conventional distillation column within the insulation structure is that the quality of the construction can be controlled to a greater degree. Cryogenic air separation units may be required almost anywhere. Most locations have airborne contaminants such as dirt and/ or grease and, in some locations, these contaminants will include corrosive contaminants, for example, salt (if the location is near the sea) or sand (if the location is in a desert) . Transportation of a fully assembled column within the insulation structure means that the internal components of the column are not exposed to any airborne contaminants on site.
Transport saddles have to be supported by shipping beams which form part of the insulation structure. This is a disadvantage of conventional support means as the saddles and beams take up space within the insulation structure and make it difficult to run piping to one face (e.g. the lower face during transportation) of the cold box. A further disadvantage is that the saddles impose significant local stresses in the wall of the distillation column to the extent that it is often necessary to thicken up the distillation column wall in the vicinity of the saddles.
Large columns, e.g. ones that have a diameter of about 3.5m (about 11 ft) or more, cannot be transported by road in combination with an insulation structure using conventional support means. A column having a diameter of about 6m (about 20 ft) is about the largest diameter column that can be transported by road fully assembled but, at present, it cannot transported within its insulation structure. This is because the saddles and shipping beams provided within the cold box would make the column and cold box combination too tall, even when provided on its side, to travel under all but the highest bridges. Therefore, the conventional proposal is to transport large columns to site, either as an assembled column (without the cold box) or as column parts. The column would then be erected on site and the insulation structure erected around the column. However, this is far less convenient and, where the column is transported in sections, there is a risk that the internal components of the large column are contaminated and/or damaged by airborne contaminants. There is a need, therefore, for a new and convenient method of transporting large columns to site such that this risk is reduced. According to a first aspect of the present invention, there is provided a distillation column in combination with an insulation structure, said column being supported within said structure from interior corners of said structure. The column may be a hydrocarbon distillation column but, in preferred embodiments, the column is a cryogenic air distillation column.
One advantage of supporting a column within an insulation structure from interior corners of the structure is that, for an insulation structure of given dimensions, larger columns may be transported by road than would be possible if conventional (non-removable) saddles and shipping beams are employed to support the column. In this way, assembly of large columns can take place in a controlled environment thereby reducing the risk of contamination of the internal components. The present invention is, therefore, suitable for use with large columns having a diameter of at least 3.5m (11 ft) and is particularly suitable for use with columns having a diameter of about 5m (about 16 ft) or about 6m (about 20 ft).
The column of the present invention is usually supported using sets of radial supports provided between each corner of the insulation structure and the outer wall of the column. The radial supports are typically made from material having low thermal conductivity giving low heat leak. Suitable materials include stainless steel.
Radial supports provided between each corner of the insulation structure and the column have an added advantage over saddles as they are suitable for use as seismic or wind supports once the column is erected on site whereas the saddles are only suitable for vertical or near vertical loading when the column is being transported. In addition, more space within the insulation structure is available making it possible to run piping along the lower face of the insulating structure.
The number of sets of radial supports depends on the overall length of the column. Typically, two sets of radial supports are used although more could be used to reducing the bending stresses in the column. The use of radial supports imposes significant local stresses in the wall of the distillation column. The contact points between the supports and the column wall may be stiffened by increasing the thickness of the wall in the area of these points. However, in preferred embodiments, internal stiffening structures or "bracing" may be used. The bracing may be made from piping or from structural sections having, for example, channelled, angled, T- or I-cross sections. Such bracing structures would usually be left inside the column when the column is in use as it would be undesirable to open the column on site to remove the bracing structure. Therefore, the bracing structure is preferably made from a material that is suitable for exposure to the conditions inside the column during use. For a cryogenic distillation column, the bracing is typically made from the same material as the column. This material is usually selected from aluminium (or an aluminium alloy), stainless steel (various grades), 9% nickel steel or any other material suitable for cryogenic temperatures.
The use of internal bracing means that the thickness of the column wall is usually less than the thickness required to support the column both during transit and when erected on site, e.g. hoisted from the horizontal position to the vertical position, without an internal stiffening structure. The thickness of the column wall is a function of operating pressure, design code, diameter of material of construction. These factors change from one plant to the next as is readily appreciated by the skilled person.
According to a second aspect of the present invention, there is provided a method of transporting a column in combination with an insulation structure, said method comprising supporting said column within said structure from interior corners of said structure and transporting said combination. The combination may have any or all of the features described above.
The following is a description, by way of example only and with reference to the accompanying drawings, of presently preferred embodiments of the invention. In the drawings: FIGURE 1 is a representation of a radial cross-section of a conventional distillation column having a diameter of no more than 3m (10 ft) in combination with an insulation structure;
FIGURE 2 is a representation of an axial partial cross-section of the column and insulation structure combination depicted in Figure 1 ;
FIGURE 3 is a representation of a radial cross-section of a distillation column in combination with an insulation structure according to the present invention;
FIGURE 4 is a representation of an axial partial cross-section of the column and insulation structure combination depicted in Figure 3;
FIGURE 5 is a representation of a radial cross-section of a column of the present invention comprising a irst internal stiffening structure;
FIGURE 6 is a representation of a radial cross-section of a column of the present invention comprising a second internal stiffening structure; and FIGURE 7 is a representation of a radial cross-section of a column of the present invention comprising a third internal stiffening structure.
Referring to Figures 1 and 2, a conventional cryogenic air distillation column 2 having a diameter of no more than 3m (10 ft) is located within an insulation structure or "cold box" 4. The column 2 is supported on a transport saddles 6 and shipping beams 8 which take up space and make it difficult to run piping (not shown) to the lower surface of the cold box 4. In Figure 2, the column 2 is supported by two saddles 6. Each saddle 6 is about 20% of the total length of the column 2 away from the nearest end of the column 2 respectively in order to reduce the bending stressing within the column 2. The saddles 6 impose significant local stresses in the distillation column wall such that it is often necessary to increase the thickness of the column wall in contact with the saddles.
Referring to Figures 3 and 4, a cryogenic distillation column 32 having a diameter of at least 3.5m (11 ft), for example about 5m (16 ft) or about 6m (20 ft), is located within a cold box 34. The column 32 is supported by radial supports 36 provided between corner members 38 of the frame of the cold box 34. Using radial supports in this way allows a column having a larger-than- conventional diameter to be transported in a given size of cold box. In addition, space is available between the lower surface of the cold box 34 and the column 32 in which piping (not shown) is located.
Radial supports will typically impose significant local stresses in the distillation column such that it will be necessary to either increase the thickness of the column wall locally and/ or to use an internal stiffening structure or "bracing" to react to the loads. Figures 5 to 7 depict three arrangements of suitable internal stiffening structures. In each arrangement, the bracing is usually fabricated from tubular members or structural sections (e.g. channels, angles and T- or I-beams). The column 52 in Figure 5 is braced with internal radial supports 54. The column 62 in Figure 6 is braced with internal supports 64 provided in a square arrangement. The column 72 in Figure 7 is braced with internal supports 74 arranged about the interior surface of the column wall.
Whilst the present invention has been discussed with particular reference to the production of oxygen from an air separation process, it is to be understood that the invention can be applied to the production of any gas using cryogenic separation processes or indeed to the distillation of a gaseous hydrocarbon mixture.
Throughout the specification, the term "means" in the context of means for carrying out a function, is intended to refer to at least one device adapted and/ or constructed to carry out that function.
It will be appreciated that the invention is not restricted to the details described above with reference to the preferred embodiments but that numerous modifications and variations can be made without departing from the spirit or scope of the invention as defined by the following claims.

Claims

1. A distillation column in combination with an insulation structure, said column being supported within said structure from interior corners of said structure.
2. A combination as claimed in Claim 1 wherein the column has a diameter of at least 3.5m (11 ft).
3. A combination as claimed in Claim 1 or Claim 2 wherein the column has a diameter of about 5m (16 ft) or about 6m (20 ft).
4. A combination as claimed in any of the preceding claims wherein the column is supported using radial supports provided between each corner of the insulation structure and the outer wall of the column.
5. A combination as claimed in Claim 4 wherein the column is supported using at least two sets of radial supports provided along the length of the column.
6. A combination as claimed in Claim 4 or Claim 5 wherein the column comprises an internal stiffening structure to disperse local stresses imposed on the wall of the column by the radial supports.
7. A combination as claimed in Claim 6 wherein the internal stiffening structure remains in the column during distillation.
8. A combination as claimed in Claim 6 or Claim 7 wherein the thickness of the wall of the column is less than the thickness required to support the column both during transit and when erected on site without an internal stiffening structure.
9. A combination as claimed in any of the preceding claims wherein the column is a cryogenic air distillation column.
10. A combination substantially as hereinbefore described with reference to Figures 3 to 7.
11. A method of transporting a column in combination with an insulation structure, said method comprising supporting said column within said structure from interior corners of said structure and transporting said combination.
12. A method as claimed in Claim 11 wherein the combination is as defined in any of Claims 2 to 9.
13. A method substantially as hereinbefore described with reference to Figures 3 to 7.
PCT/GB2004/000542 2003-02-18 2004-02-12 Distillation apparatus and method of transporting the same WO2004074603A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2004213622A AU2004213622B2 (en) 2003-02-18 2004-02-12 Distillation apparatus and method of transporting the same
DE602004002389T DE602004002389T2 (en) 2003-02-18 2004-02-12 DISTILLATION DEVICE AND TRANSPORT METHOD THEREFOR
US10/545,493 US20060144684A1 (en) 2003-02-18 2004-02-12 Distillation apparatus and method of transporting the same
EP04710419A EP1595042B1 (en) 2003-02-18 2004-02-12 Distillation apparatus and method of transporting the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0303750.4 2003-02-18
GB0303750A GB2398516A (en) 2003-02-18 2003-02-18 Distillation column with a surrounding insulating support structure

Publications (1)

Publication Number Publication Date
WO2004074603A1 true WO2004074603A1 (en) 2004-09-02

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PCT/GB2004/000542 WO2004074603A1 (en) 2003-02-18 2004-02-12 Distillation apparatus and method of transporting the same

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US (1) US20060144684A1 (en)
EP (1) EP1595042B1 (en)
CN (1) CN1751163A (en)
AT (1) ATE339571T1 (en)
AU (1) AU2004213622B2 (en)
DE (1) DE602004002389T2 (en)
GB (1) GB2398516A (en)
WO (1) WO2004074603A1 (en)
ZA (1) ZA200507104B (en)

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WO2018140445A1 (en) * 2017-01-25 2018-08-02 Praxair Technology, Inc. Structual support assembly for cold box structures in an air separation unit
CN109455418A (en) * 2018-12-17 2019-03-12 乔治洛德方法研究和开发液化空气有限公司 A kind of ice chest steel construction and method that is prefabricated and transporting the ice chest steel construction

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GB2398516A (en) 2004-08-25
CN1751163A (en) 2006-03-22
AU2004213622A1 (en) 2004-09-02
ZA200507104B (en) 2006-11-29
DE602004002389D1 (en) 2006-10-26
EP1595042B1 (en) 2006-09-13
DE602004002389T2 (en) 2007-09-20
US20060144684A1 (en) 2006-07-06
GB0303750D0 (en) 2003-03-26
ATE339571T1 (en) 2006-10-15
EP1595042A1 (en) 2005-11-16

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