US20130111950A1 - Cooling unit, and apparatus for separating air by means of cryogenic distillation including such cooling unit - Google Patents

Cooling unit, and apparatus for separating air by means of cryogenic distillation including such cooling unit Download PDF

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Publication number
US20130111950A1
US20130111950A1 US13/808,946 US201113808946A US2013111950A1 US 20130111950 A1 US20130111950 A1 US 20130111950A1 US 201113808946 A US201113808946 A US 201113808946A US 2013111950 A1 US2013111950 A1 US 2013111950A1
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United States
Prior art keywords
tower
cooling unit
exchange
nitrogen
columns
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.)
Abandoned
Application number
US13/808,946
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English (en)
Inventor
Patrice Cavagne
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.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Assigned to L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE reassignment L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CAVAGNE, PATRICE
Publication of US20130111950A1 publication Critical patent/US20130111950A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04157—Afterstage cooling and so-called "pre-cooling" of the feed air upstream the air purification unit and main heat exchange line
    • 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
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
    • F25J3/04218—Parallel arrangement of the main heat exchange line in cores having different functions, e.g. in low pressure and high pressure cores
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/30—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes
    • F25J2205/32—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes as direct contact cooling tower to produce a cooled gas stream, e.g. direct contact after cooler [DCAC]
    • 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
    • F25J2205/30—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes
    • F25J2205/34—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes as evaporative cooling tower to produce chilled water, e.g. evaporative water chiller [EWC]
    • 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
    • F25J2290/12—Particular process parameters like pressure, temperature, ratios
    • 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

  • EP-A-1666822 shows the first and second tower positioned on the ground, the second tower being near the outlet of the main exchange line.
  • Pumps used for transferring the ice-water obtained in the second tower to the first tower are generally installed on the ground beside the second tower.
  • This second tower may be made of steel or of concrete, with a round or square cross section.
  • the pressure drops in the line for residual nitrogen leaving the exchange line toward this second tower are critical because it is these that set the pressure of the low-pressure column (and therefore of the air compressor) which is connected only to the second tower where exchange of heat between the nitrogen and the water takes place.
  • the tower of round or square cross section, will be installed at a height, for example on the roof of the main exchange line so as to allow the residual nitrogen line to enter the tower directly with no pipe elbows and with a minimum length of piping, both these features generating pressure drops.
  • This tower may be made of steel, of concrete or of plastic.
  • the tower will preferably be supported by a continuation of the structure of the outer casing in which the exchange line is installed or by any other suitable support means.
  • One object of the invention is to provide a cooling unit consisting of an exchange line capable of heating up the nitrogen coming from a system of columns by exchange of heat with air that is to be cooled that is bound for the system of columns and a cooling tower allowing exchange of heat and mass between the water that is to be cooled, sent in at the top of the tower and nitrogen coming from a system of air distillation columns, the lower part of the tower comprising an inlet connected to a nitrogen pipe and the nitrogen pipe being connected to at least one exchanger body of the exchange line, capable of heating up the nitrogen coming from the system of columns by exchange of heat with air that is to be cooled that is bound for the system of columns characterized in that the tower is positioned above at least part of the exchange line.
  • the pressure drop in the nitrogen pipe between the outlet of the exchanger body and the inlet of the tower is less than 7 mbar, preferably less than 6 mbar.
  • the exchange lines 3 A, 3 B are low-pressure fluid exchangers and are separated by a space.
  • Each exchange line comprises a certain number of bodies (in this instance eight) which receive air to be cooled and nitrogen to be heated.
  • the heated-up nitrogen is collected in pipes 15 which emerge a few meters above the bottom of the tower 1 .
  • the nitrogen pipe 15 is higher up than the other pipes and is therefore easier to connect to the tower 1 .
  • the pressure drop on the nitrogen pipe 15 between the exchange body and the tower is less than 7 mbar, preferably less than 6 mbar.
  • the water cooled in the tower is used to cool the air upstream of the purification process.
  • the structure 13 will rest on the ground or on some other element.
  • “Comprising” in a claim is an open transitional term which means the subsequently identified claim elements are a nonexclusive listing (i.e., anything else may be additionally included and remain within the scope of “comprising”). “Comprising” as used herein may be replaced by the more limited transitional terms “consisting essentially of” and “consisting of” unless otherwise indicated herein.
  • Optional or optionally means that the subsequently described event or circumstances may or may not occur.
  • the description includes instances where the event or circumstance occurs and instances where it does not occur.
  • Ranges may be expressed herein as from about one particular value, and/or to about another particular value. When such particular value and/or to the other particular value, along with all combinations within said range.

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)
US13/808,946 2010-07-13 2011-07-12 Cooling unit, and apparatus for separating air by means of cryogenic distillation including such cooling unit Abandoned US20130111950A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1055722A FR2962799B1 (fr) 2010-07-13 2010-07-13 Ensemble de refroidissement et appareil de separation d'air par distillation cryogenique comprenant un tel ensemble de refroidissement
FR1055722 2010-07-13
PCT/FR2011/051670 WO2012007691A2 (fr) 2010-07-13 2011-07-12 Ensemble de refroidissement et appareil de separation d'air par distillation cryogenique comprenant un tel ensemble de refroidissement

Publications (1)

Publication Number Publication Date
US20130111950A1 true US20130111950A1 (en) 2013-05-09

Family

ID=43901357

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/808,946 Abandoned US20130111950A1 (en) 2010-07-13 2011-07-12 Cooling unit, and apparatus for separating air by means of cryogenic distillation including such cooling unit

Country Status (6)

Country Link
US (1) US20130111950A1 (enrdf_load_stackoverflow)
EP (1) EP2593739B1 (enrdf_load_stackoverflow)
JP (1) JP5902161B2 (enrdf_load_stackoverflow)
CN (1) CN103299147B (enrdf_load_stackoverflow)
FR (1) FR2962799B1 (enrdf_load_stackoverflow)
WO (1) WO2012007691A2 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015124853A3 (fr) * 2014-02-24 2015-10-15 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Appareil de séparation d'air par distillation cryogénique à plateforme surélevée
FR3052242A1 (fr) * 2016-06-06 2017-12-08 L'air Liquide Sa Pour L'etude Et L'exploitation Des Procedes Georges Claude Element de construction d’un appareil d’echange de masse et/ou de chaleur, assemblage de deux elements et procede d’echange utilisant un assemblage

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496382A (en) * 1983-03-21 1985-01-29 Air Products And Chemicals, Inc. Process using serpentine heat exchange relationship for condensing substantially single component gas streams
US5275004A (en) * 1992-07-21 1994-01-04 Air Products And Chemicals, Inc. Consolidated heat exchanger air separation process
US20020067041A1 (en) * 2000-08-30 2002-06-06 Collins James Christopher Compressor air piping system and method
US6732544B1 (en) * 2003-05-15 2004-05-11 Praxair Technology, Inc. Feed air precooling and scrubbing system for cryogenic air separation plant
WO2004088228A2 (en) * 2003-03-31 2004-10-14 Air Products And Chemicals, Inc. Apparatus for cryogenic air distillation
US20050193765A1 (en) * 2002-10-08 2005-09-08 Emmanuel Garnier Process for separating air by cryogenic distillation and installation for implementing this process

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2061478B (en) * 1979-10-23 1983-06-22 Air Prod & Chem Method and cryogenic plant for producing gaseous oxygen
JPH0721378B2 (ja) * 1985-08-12 1995-03-08 大同ほくさん株式会社 酸素ガス製造装置
JP2551461B2 (ja) * 1988-07-04 1996-11-06 日本酸素 株式会社 空気分離装置における原料空気の前処理方法
FR2844344B1 (fr) * 2002-09-11 2005-04-08 Air Liquide Installation de production de grandes quantites d'oxygene et/ou d'azote
FR2858398B1 (fr) * 2003-07-30 2005-12-02 Air Liquide Procede et installation d'alimentation d'une unite de separation d'air au moyen d'une turbine a gaz
DE10342788A1 (de) * 2003-09-15 2005-04-07 Linde Ag Coldbox
EP1666823A1 (de) * 2004-12-03 2006-06-07 Linde Aktiengesellschaft Vorrichtung zur Tieftemperaturzerlegung eines Gasgemisches, insbesondere von Luft
FR2880418B1 (fr) * 2004-12-30 2007-04-27 Air Liquide Ensemble d'echangeurs de chaleur, appareil de distillation cryogenique incorporant un tel ensemble et procede de distillation cryogenique utilisant un tel ensemble

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496382A (en) * 1983-03-21 1985-01-29 Air Products And Chemicals, Inc. Process using serpentine heat exchange relationship for condensing substantially single component gas streams
US5275004A (en) * 1992-07-21 1994-01-04 Air Products And Chemicals, Inc. Consolidated heat exchanger air separation process
US20020067041A1 (en) * 2000-08-30 2002-06-06 Collins James Christopher Compressor air piping system and method
US20050193765A1 (en) * 2002-10-08 2005-09-08 Emmanuel Garnier Process for separating air by cryogenic distillation and installation for implementing this process
WO2004088228A2 (en) * 2003-03-31 2004-10-14 Air Products And Chemicals, Inc. Apparatus for cryogenic air distillation
US6732544B1 (en) * 2003-05-15 2004-05-11 Praxair Technology, Inc. Feed air precooling and scrubbing system for cryogenic air separation plant

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015124853A3 (fr) * 2014-02-24 2015-10-15 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Appareil de séparation d'air par distillation cryogénique à plateforme surélevée
FR3052242A1 (fr) * 2016-06-06 2017-12-08 L'air Liquide Sa Pour L'etude Et L'exploitation Des Procedes Georges Claude Element de construction d’un appareil d’echange de masse et/ou de chaleur, assemblage de deux elements et procede d’echange utilisant un assemblage
WO2017212144A1 (fr) * 2016-06-06 2017-12-14 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Élément de construction d'un appareil d'échange de masse et/ou de chaleur, assemblage de deux éléments et procédé d'échange utilisant un assemblage
CN109348726A (zh) * 2016-06-06 2019-02-15 乔治洛德方法研究和开发液化空气有限公司 用于构造或修改物质和/或热量交换装置的方法
CN109564059A (zh) * 2016-06-06 2019-04-02 乔治洛德方法研究和开发液化空气有限公司 用于构造物质和/或热量交换装置的元件、具有两个元件的组件、及使用组件的交换方法
US11215395B2 (en) 2016-06-06 2022-01-04 L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude Element for construction of a mass- and/or heat-exchange device, assembly of two elements and exchange method using an assembly

Also Published As

Publication number Publication date
EP2593739A2 (fr) 2013-05-22
FR2962799A1 (fr) 2012-01-20
WO2012007691A2 (fr) 2012-01-19
CN103299147A (zh) 2013-09-11
JP5902161B2 (ja) 2016-04-13
WO2012007691A3 (fr) 2013-10-10
CN103299147B (zh) 2015-10-07
JP2014500937A (ja) 2014-01-16
FR2962799B1 (fr) 2014-07-04
EP2593739B1 (fr) 2017-04-12

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Owner name: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'E

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CAVAGNE, PATRICE;REEL/FRAME:029821/0370

Effective date: 20130124

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION