US3135420A - Container for corrosive liquids - Google Patents

Container for corrosive liquids Download PDF

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Publication number
US3135420A
US3135420A US204360A US20436062A US3135420A US 3135420 A US3135420 A US 3135420A US 204360 A US204360 A US 204360A US 20436062 A US20436062 A US 20436062A US 3135420 A US3135420 A US 3135420A
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US
United States
Prior art keywords
container
wall
interior
exterior
liner
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.)
Expired - Lifetime
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US204360A
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English (en)
Inventor
Fareil Jack Loehr
Homsy Charles Albert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to US204360A priority Critical patent/US3135420A/en
Priority to GB22859/63A priority patent/GB1001315A/en
Priority to FR938792A priority patent/FR1376529A/fr
Priority to DEP21802U priority patent/DE1908970U/de
Application granted granted Critical
Publication of US3135420A publication Critical patent/US3135420A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/24—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes
    • B65D51/246—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes provided with eating utensils or spatulas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0053—Details of the reactor
    • B01J19/006—Baffles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/02—Apparatus characterised by being constructed of material selected for its chemically-resistant properties
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F15/00—Other methods of preventing corrosion or incrustation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/02—Apparatus characterised by their chemically-resistant properties
    • B01J2219/0204—Apparatus characterised by their chemically-resistant properties comprising coatings on the surfaces in direct contact with the reactive components
    • B01J2219/0245—Apparatus characterised by their chemically-resistant properties comprising coatings on the surfaces in direct contact with the reactive components of synthetic organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
    • B65D85/78—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials for ice-cream

Definitions

  • the bonding agent may be attacked not only by'the corrosive agent diffusing through the liner, but by other relatively inert materials, for example, moisture. Although this difiiculty may be circumvented by fabricating the container solely from the inert polymerthus removing the need for an exterior structure and a bonding agent, such a remedy usuallyis precluded because of either the inherent lack of self-supporting rigidity in the polymer selected or the high cost of the quantity of polymer needed to achieve self-support. A still further difficulty often encountered when employing polymeric liners is blistering of the exterior surface of the.
  • a dual-walled container comprising an exterior, rigid, supporting, enclosing member or wall containing therein an interior, supported enclosing member or wall having a loading or discharging passage leading therefrom through said outer member.
  • the inner wall or liner is fabricated from a high polymer which is essentially inert to the corrosive fluid to be contained therein. Furthermore, the liner is substantially isolated from the outer wall by a vapor space through which flows an inert gas stream to purge out any fluid material diffusing through the inner polymer wall.
  • the inner polymer membrane may be held in place and supported by a variety of means. If the inner polymer wall exhibits sufficient rigid- A further object is to prevent blister formation.
  • 3,135,420 Patented June 2, 1964 'ice ity to be self-supporting it. may have affixed to its outer side suitably positioned studs which are held in place on the outer wall.
  • the studs may be affixed to the inner wall, for example, by heat-sealing, or they may be formed concurrently during the wall fabrication step.
  • the stud may be threaded on one end, the threaded end being extended through the outer vessel wall and suitably held in place.
  • a metal rivet running through the inner wall and having its head protectively coated with an organic polymer likewise, may be used to hold the liner in place.
  • the vapor "space between the inner and outer-walls may be maintained under a high inert gas pressure to 'aid in providing support for the fluid-filled inner member.
  • the positive pressure of the inert gas may retard the diffusion of the corrosive agent through the inner wall.
  • this invenare parallel with each other there may be a series of.
  • the series of parallel ribs in the end sections of a cylindrical tank may be angular to a series of parallel ribs in the side.
  • the ribs may become non-parallel as they converge at the poles.
  • the polymeric innerwall may be fabricated from sheetinghaving the ribs directly incorporated therein. Ribbed sheeting may be formed by standard extrusion techniques using a notched die to introduce the ribs, after which the ribbed sheet may be shaped to provide .the interior member or wall of the container.
  • the nominal polymer wall thickness i.e. the Wall thickness exclusive of ribs or support means
  • the outer wall may contain appropriately spaced ridges or indentations which serve to hold the liner in place.
  • Peripheral spacing rings or strips which may be fabricated independently and aifixed either to the inner or the outer wall, also, may be used to provide the same effect as the ribbed wall, namely, to substantially isolate the inner and outer walls while providing support for the inner wall.
  • a still further variation in the present invention may be realized by filling the space between the inner and outer walls with a highly permeable inert material which provides structural support without materially impeding the flow of purge gas.
  • an essential aspect of the invention is the positive flow of inert gas which purges out any material which is entrapped between the walls after diifusing through the polymeric inner wall.
  • the support means can occupy 3 to 50%, and preferably 25 to 30%, of the total furme between the inner and outer members.
  • this percentage free volume may be achieved by adjusting the ribbed spacing, i.e. the distance between adjacent ribs on the inner wall, to 0.05 to 0.50 inch and the rib height, equal to the distance between the Walls at the non-ribbed surface of the inner wall by a path normal to both walls, to 0.01 to 0.30 inch.
  • the rib itself may have various shapes depending upon the method of fabrication. For example, the plain surfaces forming its sides may meet the inner and outer walls normal to their surfaces.
  • the ribs also, may be saw-tooth or truncated triangular in cross section, normally having their greatest thickness at the juncture with the inner wall.
  • inlet and outlet valves In order to supply and maintain a positive flow of inert gas between the dual walls of the above-described container, suitable inlet and outlet valves must be provided. Likewise, baffles or a deflecting means must be installed between the inner and outer members to deflect the gas and ensure effective purging. When the ribbed inner wall construction is employed, a suitable manifold must be included so as to divert the flow of gas uniformly to all channels between the ribs. The flow of purge gas may be varied depending upon the rate at which the corrosive material being contained diffuses through the polymeric Wall. When this diffusion rate is low, intermittent gas Suitable monitors may be installed at the purge gas exit port to determine optimum flow rate.
  • the purge gas preferably employed may be any gas which. is inert to the materials of construction as well as to the agent being removed by the purge. For most operations dry air or nitrogen is used because of its ready availability.
  • the inner wall in the present invention may be fabricated from any organic polymer which is resistant to the corrosive agent being contained therein.
  • Particularly useful are film-forming polymers, and especially those which have a high degree of rigidity.
  • polymers useful herein may be cited the hydrocarbon polymers, especially high density polyethylene, polypropylene, polystyrene, and the like, the halogenated hydrocarbon polymers, such as polyvinyl chloride, the fluorinated hydrocarbon polymers, and the like, the polycarbonates, polyoxymethylenes, polyamides, and the chlorinated polyethers.
  • the fluorinated hydrocarbon polymers are generally the most useful because of their inherent chemical inertness.
  • Polymers prepared from tetrafluoroethylene, tetrafluoro ethylene and hexafiuoropropylene, vinylidene fluoride and chlorotrifluoroethylene are representative of this type of polymer.
  • the outer wall of the dual-walled container frequently is fabricated from a metal which provides both rigidity and mechanical strength. Since the use of expensive corrosion-resistant metals is unnecessary as a result of the present invention, greater latitude in the selection of the material used for the outer wall has been achieved.- For many uses, the outer wall may be constructed from a polymeric material which possesses the requisite structural characteristics of an outer or protective member. Moreover, the selection of a polymeric outer wall is further enhanced because of the absence of any necessity to consider its chemical reactivity with the corrosive agent being contained. Especially suitable as polymeric outer walls are the thermoplastic resins such as the hydrocarbon polymers.
  • polyethylene particularly the high-density variety, polypropylene, polystyrene and copolymers of styrene, the polyoxymethylenes, polycarbonates, polyamides, and the like, as' well as thermosetting resins and reinforced plastics.
  • container refers to a structure which is used for the confinement and retention of a fluid within a given spacial limitation and necessarily includes structures for confining not only essentially stagnant fluids but moving fluids as well.
  • Containers useful in the latter application include pipe and tubing used in transferring fluid process streams, raw materials, products, and the like.
  • the containers described herein may be employed for confining either stationary or flowing fluids over a wide range of temperatures, the temperature being limited only by the ability of the polymeric wall or Walls to withstand operating conditions.
  • Heating or cooling of the container may be effected by means of an external source which concurrently heats or cools the container and the purge gas.
  • the heating or cooling means likewise, may be incorporated within the space between the walls of the container.
  • the temperature of the container may be controlled by means of independently heated or cooled purge gas.
  • the free space between the inner and outer members may provide an additional feature in the present invention by serving as a thermal barrier between the.
  • FIG. 1 is an elevation view of a kettle or container with a portion of the exterior wall broken away to expose the interior member.
  • FIGURE 2 is a transverse sectional view along line 2-2 of FIGURE 1 showing the exterior and interior members.
  • FIGURE 3 is an enlarged fragmental transverse sectional view along line 33 of FIGURE 1 showing constructional details of the head and base portions of the container.
  • FIGURE 4 is an enlarged fragmental sectional view of the ribbed sheeting forming the interior member of the container.
  • FIGURE 5 is an enlarged fragmental perspective view showing the ribbed sheeting forming the side and bottom of the interior member of the base portion of the container.
  • FIGURE 6 is an enlarged fragmental perspective view showing the ribbed sheeting forming the side and top of the interior member of the base and head portions of the container and, also, showing the overlap at the flanges of the base and head portions of the ribbed sheeting forming the interior member of the container.
  • FIGURE 7 is a vertical enlarged fragmental view showing the ribbed sheeting forming the head liner portion of the interior member of the container.
  • FIGURES 1 and 3 show a kettle or container having a cylindrical metal exterior member which is split at the top so as to provide a removable head 1 which may be afiixed to the base 2 of the container by a plurality of bolts 3, inserted through holes suitably positioned along the flanges of the head and the base, to effect sealing.
  • a ribbed-type interior member is utilized, with the interior member being fabricated from ribbed sheeting, FIGURE 4, which is formed from a tetrafluoroethylene-hexafluoropropylene copolymer. The sheeting is vacuum formed to the desired shape to fit the base and head of the container.
  • the liner 4 for the base 2 of the container may be formed by joining together, using conventional melt bonding techniques, sections of sheeting corresponding to the side, bottom and flange of the liner.
  • the liner 5 for the head 1 may be similarly formed.
  • a section is cut from each of the parallel ribs in both liners 4, 5 to form a crosschannel or manifold 6 so as. to permit uniform urging of the system by providing equidistant paths of gas flow between the inlet and outlet purge gas ports 7.
  • FIGURE 2 depicts the interior and exterior members with the parallel longitudinal channels 8 through which passes the purge gas
  • FIGURE 5 shows a portion of the side and bottom of the base liner 4.
  • FIGURE 6 depicts the overlap of the flanges of the base liner 4 and the head contained and the external V liner 5 with appropriate spacing washers 9, and FIGURE 7, the head liner 5 with parallel channels 8, the crosschannel or manifold 6 and the spacing washer 9.
  • a dual-walled container of the aforesaid description is filled with 10 weight percent hydrochloric acid, then heated to and maintained at 200 F. for 10 days. During this time a dry air purge gas is passed between the interior and exterior members of the vessel ata rate of 75 cc. per minute (corrected to standard temperature and pressure). After 10 days the vessel is cooled and the acid is removed. The metal exterior member beneath the liner is free from any evidence of chemical attack and the acid is still water white. Furthermore, the outside of the polymeric liner is free of blisters. A control experiment run at the same conditions without the liner results in serious corrosion and pitting of the metal exterior member as'well as discoloration and contamination of the acid. A
  • a container for retaining fluid materials comprising a supporting, rigid exterior member, an interior member fabricated from an organic polymer and having a passage leading therefrom which provides a means of conducting said fluid materials through said exterior member, a plurality of support means for maintain ing said interior member in spaced relation to and separated from said supporting exterior member, said support means occupying 3 to 50% of the spaced volume between said interior and exterior members, a means for introducing a purgegas between said interior and exterior members, a deflection means for diverting said purge gas uniformly between said interior and exterior V members and means for removing said purge gas.
  • organic polymeric interior member is fabricated from a ribbed film having a nominal thickness of 0.01 to 0.10 inch-a wall distance between ribs of 0.05 to 0.50 inch and a rib height of 0.01 to 0.30 inch, said organic polymer being selected from the group consisting of hydrocarbon polymers,
  • halogenated hydrocarbon polymers polycarbonates, polyamides, polyoxymethylenes and chlorinated polyethers.
  • a method for containing corrosive chemical fluids comprising introducing said corrosive fluid into an enclosing, organic polymeric, interior member through a passage leading therefrom through a rigid, exterior, supporting member, said exterior member having a purge gas entrance port and a purge gas exit port, said I interior member being separated from and held in spaced relation to said exterior member by a plurality of support means, said support means occupying 3 to 50% of the space volume between said interior and exterior members, passing an inert purge gas through said gas entrance port and removing said purge gas through said gas exit port.
  • interior member with an interior Wall distance between ribs of 0.05 to 0.50 inch.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
US204360A 1962-06-22 1962-06-22 Container for corrosive liquids Expired - Lifetime US3135420A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US204360A US3135420A (en) 1962-06-22 1962-06-22 Container for corrosive liquids
GB22859/63A GB1001315A (en) 1962-06-22 1963-06-07 A container for corrosive liquids
FR938792A FR1376529A (fr) 1962-06-22 1963-06-20 Récipient pour liquides corrosifs
DEP21802U DE1908970U (de) 1962-06-22 1963-06-21 Behaelter fuer korrodierende fluessigkeiten.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US204360A US3135420A (en) 1962-06-22 1962-06-22 Container for corrosive liquids

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US3135420A true US3135420A (en) 1964-06-02

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US204360A Expired - Lifetime US3135420A (en) 1962-06-22 1962-06-22 Container for corrosive liquids

Country Status (4)

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US (1) US3135420A (fr)
DE (1) DE1908970U (fr)
FR (1) FR1376529A (fr)
GB (1) GB1001315A (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215307A (en) * 1963-04-05 1965-11-02 Greif Bros Expansible drum liner
US3679086A (en) * 1970-06-03 1972-07-25 Shell Oil Co Liquid storage tank
US3729112A (en) * 1971-05-06 1973-04-24 R Gibbs Composite container
US3962066A (en) * 1974-01-30 1976-06-08 Barber-Webb Resilient liner for an electrolytic cell
US4318056A (en) * 1978-08-17 1982-03-02 The United States Of America As Represented By The United States Department Of Energy Excimer laser with fluoropolymer lining
US4417428A (en) * 1981-02-19 1983-11-29 Boeing Aerospace Company Integral purged multi-layer insulation design
EP0081173B1 (fr) * 1981-12-01 1987-01-28 General Signal Corporation Réservoir avec revêtement intérieur
US4871087A (en) * 1988-04-04 1989-10-03 Johnson David S Reusable container dispenser for ultra high purity chemicals and method of storage
US5255722A (en) * 1992-03-12 1993-10-26 Envirex Inc. Vaporless liquid containment system
US5333641A (en) * 1993-12-03 1994-08-02 Motorola, Inc. Containment vessel for environmentally sealing a chemical compound
US20040199031A1 (en) * 2003-04-04 2004-10-07 Honeywell International, Inc. Fluoropolymer lined metallic vessel design
US8062606B2 (en) 2006-11-14 2011-11-22 Arkema France Coated reactors, production method thereof and use of same
NL2007159C2 (nl) * 2011-07-21 2013-01-22 Europ Dry Systems B V Luchtwasser en werkwijze voor het vervaardigen van een luchtwasser.

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1536177B1 (de) * 1966-11-23 1972-06-29 Ludwig Maurer Einrichtung zum Verhindern des Anbackens und der Brueckenbildung von Gut an der Wand von starren Bunkern
DE2815082A1 (de) * 1978-04-07 1979-10-18 Antipoll Recycling Consult Vorrichtung zum trennen von gasen oder daempfen durch adsorption und regenerierung des adsorbers durch spueldampf
EP0853238B1 (fr) * 1997-01-13 2002-09-18 Daniel Dr. Studer Dispositif port échantillon pour échantillons contenant de l'eau et procédé d'utilisation d'un tel dispositif

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638338A (en) * 1948-11-18 1953-05-12 Lukens Steel Co Corrosion inhibiting vessel construction
US2772860A (en) * 1953-07-28 1956-12-04 Shell Dev Vessel with continuous helical liner
US3068561A (en) * 1957-11-20 1962-12-18 Wayne W Jones Method of installing a flexible tank liner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638338A (en) * 1948-11-18 1953-05-12 Lukens Steel Co Corrosion inhibiting vessel construction
US2772860A (en) * 1953-07-28 1956-12-04 Shell Dev Vessel with continuous helical liner
US3068561A (en) * 1957-11-20 1962-12-18 Wayne W Jones Method of installing a flexible tank liner

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215307A (en) * 1963-04-05 1965-11-02 Greif Bros Expansible drum liner
US3679086A (en) * 1970-06-03 1972-07-25 Shell Oil Co Liquid storage tank
US3729112A (en) * 1971-05-06 1973-04-24 R Gibbs Composite container
US3962066A (en) * 1974-01-30 1976-06-08 Barber-Webb Resilient liner for an electrolytic cell
US4318056A (en) * 1978-08-17 1982-03-02 The United States Of America As Represented By The United States Department Of Energy Excimer laser with fluoropolymer lining
US4417428A (en) * 1981-02-19 1983-11-29 Boeing Aerospace Company Integral purged multi-layer insulation design
EP0081173B1 (fr) * 1981-12-01 1987-01-28 General Signal Corporation Réservoir avec revêtement intérieur
US4871087A (en) * 1988-04-04 1989-10-03 Johnson David S Reusable container dispenser for ultra high purity chemicals and method of storage
US5255722A (en) * 1992-03-12 1993-10-26 Envirex Inc. Vaporless liquid containment system
US5343908A (en) * 1992-03-12 1994-09-06 Envirex Inc. Vaporless liquid containment system
US5333641A (en) * 1993-12-03 1994-08-02 Motorola, Inc. Containment vessel for environmentally sealing a chemical compound
US20040199031A1 (en) * 2003-04-04 2004-10-07 Honeywell International, Inc. Fluoropolymer lined metallic vessel design
WO2004089535A1 (fr) * 2003-04-04 2004-10-21 Honeywell International Inc. Reacteur revetu de fluoropolymere
US20060079722A1 (en) * 2003-04-04 2006-04-13 Yuon Chiu Fluoropolymer lined metallic vessel design
US7102040B2 (en) 2003-04-04 2006-09-05 Honeywell International Inc. Fluoropolymer lined metallic vessel design
CN100408158C (zh) * 2003-04-04 2008-08-06 霍尼韦尔国际公司 衬有含氟聚合物衬里的反应器
US7780930B2 (en) 2003-04-04 2010-08-24 Honeywell International, Inc. Fluoropolymer lined metallic vessel design
US8062606B2 (en) 2006-11-14 2011-11-22 Arkema France Coated reactors, production method thereof and use of same
NL2007159C2 (nl) * 2011-07-21 2013-01-22 Europ Dry Systems B V Luchtwasser en werkwijze voor het vervaardigen van een luchtwasser.

Also Published As

Publication number Publication date
FR1376529A (fr) 1964-10-31
GB1001315A (en) 1965-08-11
DE1908970U (de) 1965-01-21

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