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WO1993019335A1 - Installation de separation d'air et procede de separation d'air a basse temperature - Google Patents

Installation de separation d'air et procede de separation d'air a basse temperature Download PDF

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Publication number
WO1993019335A1
WO1993019335A1 PCT/EP1993/000622 EP9300622W WO9319335A1 WO 1993019335 A1 WO1993019335 A1 WO 1993019335A1 EP 9300622 W EP9300622 W EP 9300622W WO 9319335 A1 WO9319335 A1 WO 9319335A1
Authority
WO
WIPO (PCT)
Prior art keywords
column
air separation
separation plant
slats
plant according
Prior art date
Application number
PCT/EP1993/000622
Other languages
German (de)
English (en)
Inventor
Helmut Kreis
Anton Moll
Original Assignee
Linde Aktiengesellschaft
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 Linde Aktiengesellschaft filed Critical Linde Aktiengesellschaft
Publication of WO1993019335A1 publication Critical patent/WO1993019335A1/fr

Links

Classifications

    • 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
    • B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
    • 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
    • F25J3/04406—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 using a dual pressure main column system
    • F25J3/04412—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 using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • 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
    • F25J3/04896—Details of columns, e.g. internals, inlet/outlet devices
    • F25J3/04909—Structured packings
    • 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
    • F25J3/04896—Details of columns, e.g. internals, inlet/outlet devices
    • F25J3/04915—Combinations of different material exchange elements, e.g. within different columns
    • F25J3/04921—Combinations of different material exchange elements, e.g. within different columns within the same column
    • 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
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/3221—Corrugated sheets
    • 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
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32213—Plurality of essentially parallel sheets
    • B01J2219/3222—Plurality of essentially parallel sheets with sheets having corrugations which intersect at an angle different from 90 degrees
    • 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
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32224—Sheets characterised by the orientation of the sheet
    • B01J2219/32227—Vertical orientation
    • 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
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/322—Basic shape of the elements
    • B01J2219/32203—Sheets
    • B01J2219/32237—Sheets comprising apertures or perforations
    • B01J2219/32244—Essentially circular apertures
    • 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
    • B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
    • B01J2219/324—Composition or microstructure of the elements
    • B01J2219/32408—Metal
    • 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
    • F25J2290/44—Particular materials used, e.g. copper, steel or alloys thereof or surface treatments used, e.g. enhanced surface

Definitions

  • the invention relates to an air separation plant with a supply line which leads via an air compressor and a cleaning plant and through a main heat exchanger into a distillation system which has at least one rectification column, and with product lines which lead from the distillation system to the main heat exchanger, at least one partial area contains at least one rectification column an orderly packing, as well as a method for the low-temperature separation of air
  • EP-A-0241 817 shows a single-column air separator
  • EP-A-0316768 shows a double-column system
  • EP-A-0377 117 shows an air separator with connected argon production. From the last-mentioned publication it is also known to equip one of the rectification columns of the air separator, the crude argon column, with an orderly packing.
  • the packing contained in a partial area of a rectification column consists of folded lamellae arranged parallel to one another, which are made of a film-like material and have openings, with adjacent lamellae touching each other, and that the lamellae between two folds have essentially smooth surfaces.
  • the term “smooth” does not allow any roughness on the lamella surface. In practice, this means the exclusion of surveys and impressions that have a significant influence on the flow of the liquid flowing on the surface of the lamellae (here liquid air or any liquefied mixture of air constituents). In particular, no surface structure in the form of corrugation or embossing is provided, the embossing depth of which significantly exceeds the film thickness. At best, unevenness should preferably be permitted, the deflections of which are smaller than the film thickness, most preferably small compared to that of the film thickness.
  • the thickness of the film from which the lamellae are made is generally less than 1 mm, preferably about 0.1 to 0.2 mm.
  • the smooth property of the surfaces of the slats is not affected in the meaning used here by the openings which the slats have.
  • These openings can consist, for example, of holes, gaps or slits and can be distributed homogeneously or inhomogeneously over the lamella surface.
  • the opening ratio is, for example, 5 to 40%, preferably about 15 to 20%.
  • the specific surface area of the packing used in the air separation plant according to the invention is generally 350 to 750 m / m. In certain applications it can also be advantageous to use higher specific
  • the invention can be particularly favorable to a method and a
  • Folds of the slats can be formed by relatively sharp edges (zigzag folding) or by less sharp edges (wave shape). Other types of folding are also possible.
  • Ordered packings are known from many publications which generally deal with ordered packs of lamellae, which in part features are similar to the pack used in the invention. Thus, for other uses, for example in hydrocarbon separation, material exchange elements made of folded perforated metal piles are known. In previous publications, in which the surface structure of the lamellae is discussed (for example DE-C-27 22 424 or DE-B-2722 556), a fine structure (corrugation) of the lamella surface is particularly important for the distribution of liquid on the lamella surface shown.
  • the lamellae of the packing are preferably made of sheet metal.
  • this consists essentially of aluminum, for example of an aluminum alloy or also of essentially pure aluminum.
  • the metal sheet used for the production of the fins can contain copper in an alloy.
  • it can consist predominantly of copper.
  • the package used in the invention or also other packages used in processes with high oxygen concentrations can also be made of plastic, for example PTFE.
  • plastic for example PTFE.
  • ceramic or glass-like materials for example non-metal oxides or mixtures of metal oxides and non-metal oxides, or materials coated with them are also suitable for the production of such a package.
  • the distillation system of the air separation plant according to the invention has a double column which consists of a pressure column and a low pressure column.
  • a partial area equipped with a packing should be arranged in the low-pressure column, in particular the one or one of the partial areas, the packing of which has smooth surfaces.
  • the advantages of the invention are particularly evident when the distillation system has a crude argon column.
  • the crude argon column is connected to the low-pressure column of a two-stage column via at least one argon transfer line, but in principle it is also possible to connect a crude argon column to a single column for nitrogen-oxygen separation.
  • At least one partial area equipped with packings can also be arranged in the pressure column.
  • the smooth packing is preferably also used here or exclusively.
  • the invention also relates to a method for the low-temperature separation of air according to claims 13 to 23, according to which the above-described air separation plant is operated.
  • the invention and further details of the invention are explained in more detail below with reference to an exemplary embodiment which is shown schematically in the drawings.
  • the device shown in FIG. 1 and the method by which it is operated have two rectification stages; however, the invention is also applicable to single-stage air separation processes, as well as processes with more than two stages.
  • Express reference is made to the specific examples that are described in German patent application P 4224068.9 and in the corresponding international patent application PCT / EP (internal file number
  • FIG. 1 shows a double-column air separation plant and FIG. 2 shows a smooth packing as used in one of the air separation columns according to the invention.
  • cleaned air 1 is cooled to about dew point under a pressure of 4 to 20 bar, preferably 5 to 12 bar in a heat exchanger 2 against product flows and fed into the pressure column 3 of a two-stage rectification device.
  • the pressure column 3 is in heat exchange relationship with a low-pressure column 5 via a common condenser-evaporator 4.
  • the low-pressure column 5 has the following sections in the method and device of FIG. 1:
  • a pure nitrogen section (above impure nitrogen line 11)
  • the mass transfer in the pressure column 3 can be effected partially or completely by the smooth packing.
  • the packing described in claim 1 can also be used in further columns of the air separation plants, for example in a column for the production of argon.
  • FIG. 2 shows a section of an exemplary embodiment of a smooth packing, as can be used in the air separation plant according to the invention. Three layers are shown. Shadows are indicated as hatching to illustrate the spatial structure. The hatching means no corrugation or similar fine structure.
  • the folded lamellae 101, 102, 103 are preferably arranged such that the folds (for example 104, 105 ) run obliquely to the column axis (vertical).
  • the next but one slats 101, 103 have the same orientation.
  • the intermediate lamella 102 is oriented so that its fold is at an angle - preferably perpendicular - to that of the adjacent lamellae.
  • the surface of the slats between two folds (e.g. between 104 and 105) is smooth. So there are no corrugations or embossing. At most, due to the introduction of openings (holes 106) or due to other causes, for example of a production-related nature, the lamellae 101, 102, 104 may still have unevenness, which, however, have no significant influence on the liquid flow.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

Une installation de séparation d'air comprend un conduit d'amenée (1) qui traverse un compresseur d'air, un appareil de purification, un échangeur principal de chaleur (2) et finit dans un système de distillation. En outre, des conduits à produit (9, 10, 11) mènent du système de distillation à l'échangeur principal de chaleur. Au moins une zone partielle d'au moins une colonne de rectification du système de distillation contient une garniture rangée composée de lamelles (101-103) parallèles repliées constituées d'un matériau en feuilles et pourvues d'ouvertures (106). Les lamelles adjacentes se touchent et les lamelles ont une surface sensiblement lisse entre deux plis (104, 105).
PCT/EP1993/000622 1992-03-20 1993-03-17 Installation de separation d'air et procede de separation d'air a basse temperature WO1993019335A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4209132.2 1992-03-20
DE4209132A DE4209132A1 (de) 1992-03-20 1992-03-20 Luftzerlegungsanlage und verfahren zur tieftemperaturzerlegung von luft

Publications (1)

Publication Number Publication Date
WO1993019335A1 true WO1993019335A1 (fr) 1993-09-30

Family

ID=6454639

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/000622 WO1993019335A1 (fr) 1992-03-20 1993-03-17 Installation de separation d'air et procede de separation d'air a basse temperature

Country Status (5)

Country Link
CN (1) CN1105750A (fr)
AU (1) AU3749393A (fr)
DE (1) DE4209132A1 (fr)
WO (1) WO1993019335A1 (fr)
ZA (1) ZA931963B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0761283A1 (fr) * 1995-08-17 1997-03-12 Basf Aktiengesellschaft Elements de remplissage pour colonne d'échange et procédé de fabrication de ces éléments
EP0671594B1 (fr) * 1994-03-11 2000-02-16 The Boc Group, Inc. Procédé de séparation de gaz atmosphérique
US7052000B2 (en) 2000-03-08 2006-05-30 Julius Montz Gmbh Liquid distributor and method for operating the same

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4332870C2 (de) * 1993-09-27 2003-02-20 Linde Ag Verfahren und Vorrichtung zur Gewinnung eines Krypton-/Xenon-Konzentrats durch Tieftemperaturzerlegung von Luft
CA2142317A1 (fr) * 1994-02-24 1995-08-25 Anton Moll Methode et appareil pour la recuperation d'argon pur
DE4406051A1 (de) * 1994-02-24 1995-08-31 Linde Ag Verfahren und Vorrichtung zur Gewinnung von reinem Argon
JP3319174B2 (ja) * 1994-09-19 2002-08-26 株式会社日立製作所 充填物及び空気分離装置
EP2645031A1 (fr) * 2012-03-29 2013-10-02 Linde Aktiengesellschaft Colonne de séparation pour une installation de décomposition de l'air à basse température, installation de décomposition de l'air à basse température et procédé de décomposition à basse température de l'air
DE102012006484A1 (de) * 2012-03-29 2013-10-02 Linde Aktiengesellschaft Transportables Paket mit einer Coldbox und Verfahren zum Herstellen einer Tieftemperatur-Luftzerlegungsanlage
DE102012006479A1 (de) * 2012-03-29 2013-10-02 Linde Ag Transportables Paket mit einer Coldbox und Verfahren zum Herstellen einer Tieftemperatur-Luftzerlegungsanlage
US10012437B2 (en) * 2015-07-31 2018-07-03 Praxair Technology, Inc. Method and apparatus for argon recovery in a cryogenic air separation unit integrated with a pressure swing adsorption system
EP3931504A1 (fr) * 2019-02-25 2022-01-05 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Matrice intégrant au moins une fonction d'échange thermique et une fonction de distillation
EP3718617A1 (fr) 2019-04-05 2020-10-07 Linde GmbH Colonne d'échange de matière

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2338065A1 (fr) * 1976-01-16 1977-08-12 Sulzer Ag Element de garnissage regulier de colonne d'echange de matieres
US4668443A (en) * 1985-11-25 1987-05-26 Brentwood Industries, Inc. Contact bodies
EP0270050A2 (fr) * 1986-12-01 1988-06-08 Glitsch, Inc. Matière de remplissage de colonne structurée
EP0509929A1 (fr) * 1991-04-19 1992-10-21 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procédé de séparation cryogénique de mélanges contenant de l'oxygène, garnissage organisé pour la mise en oeuvre de ce procédé, et colonne de distillation d'air comportant un tel garnissage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2338065A1 (fr) * 1976-01-16 1977-08-12 Sulzer Ag Element de garnissage regulier de colonne d'echange de matieres
US4668443A (en) * 1985-11-25 1987-05-26 Brentwood Industries, Inc. Contact bodies
EP0270050A2 (fr) * 1986-12-01 1988-06-08 Glitsch, Inc. Matière de remplissage de colonne structurée
EP0509929A1 (fr) * 1991-04-19 1992-10-21 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procédé de séparation cryogénique de mélanges contenant de l'oxygène, garnissage organisé pour la mise en oeuvre de ce procédé, et colonne de distillation d'air comportant un tel garnissage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0671594B1 (fr) * 1994-03-11 2000-02-16 The Boc Group, Inc. Procédé de séparation de gaz atmosphérique
EP0761283A1 (fr) * 1995-08-17 1997-03-12 Basf Aktiengesellschaft Elements de remplissage pour colonne d'échange et procédé de fabrication de ces éléments
US7052000B2 (en) 2000-03-08 2006-05-30 Julius Montz Gmbh Liquid distributor and method for operating the same

Also Published As

Publication number Publication date
AU3749393A (en) 1993-10-21
ZA931963B (en) 1993-11-02
DE4209132A1 (de) 1993-09-23
CN1105750A (zh) 1995-07-26

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