WO2009027008A1 - Compression d'un fluide oxygéné - Google Patents

Compression d'un fluide oxygéné Download PDF

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Publication number
WO2009027008A1
WO2009027008A1 PCT/EP2008/006440 EP2008006440W WO2009027008A1 WO 2009027008 A1 WO2009027008 A1 WO 2009027008A1 EP 2008006440 W EP2008006440 W EP 2008006440W WO 2009027008 A1 WO2009027008 A1 WO 2009027008A1
Authority
WO
WIPO (PCT)
Prior art keywords
lubricant
oxygen
ionic liquids
trifluoromethylsulfonyl
imide
Prior art date
Application number
PCT/EP2008/006440
Other languages
German (de)
English (en)
Inventor
Dirk Gerhard
Eberhard Schlücker
Tim Predel
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 WO2009027008A1 publication Critical patent/WO2009027008A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/10—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member
    • F04C18/107—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member with helical teeth
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/56—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing nitrogen
    • C10M105/70—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing nitrogen as ring hetero atom
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/72—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing sulfur, selenium or tellurium
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/223—Five-membered rings containing nitrogen and carbon only
    • C10M2215/224—Imidazoles
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/02—Viscosity; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/077—Ionic Liquids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/02—Pour-point; Viscosity index
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/30—Refrigerators lubricants or compressors lubricants

Definitions

  • the invention relates to a method for compressing a gaseous, oxygen-containing medium, preferably oxygen, by means of a screw compressor, which is lubricated by a lubricant.
  • the viscosity of the lubricant should be as low as possible to ensure an unobstructed supply and a rapid distribution of the lubricant in the pressure chamber of the compressor.
  • a certain minimum viscosity should not be exceeded, since otherwise sufficient wear protection and a required fine sealing of the pressure chamber can not be guaranteed.
  • the lubricant used within the desired operating conditions must traction_voro, so _da_nur-of-operation-of-compressor- réelle4st ⁇
  • the lubricant to be used must be thermally stable under operating conditions, since the release of any decomposition products would result in an increased risk of fire and explosion.
  • the decomposition temperature 50 0 C should be above the operating temperature, since the reliability must be guaranteed even in case of disturbances.
  • the oxygen solubility of the lubricant used should be as low as possible so as to minimize the discharge and thus the loss of the medium to be compressed from the compressor. Increased gas solubility would require a greater expenditure on equipment, since the dissolved oxygen would have to be recycled separately after the lubricant had been released. A low oxygen solubility also has the advantage that unwanted cavitation, which can lead to damage of the compressor, is avoided.
  • the lubricant used should not lead to increased corrosion of the metallic components of the compressor.
  • the lubricant must stop corrosion due to moisture, so-called condensed water, as a result of standstill, partial load or idle operation, as this may wash off the lubricating film and cause rusting and subsequent wear. Volatility:
  • the object of the present invention is to provide a generic method for compressing a gaseous, oxygen-containing medium, preferably oxygen, by means of a screw compressor, which is lubricated by a lubricant which is able to fulfill the aforementioned requirements in the best possible way ,
  • a generic method for compressing a gaseous, oxygen-containing medium is proposed, which is characterized in that as a lubricant, a liquid consisting essentially of an ionic liquid, consisting of a
  • this class of ionic liquids is particularly well suited for the intended use, since it is characterized by excellent thermal stability and a suitable viscosity.
  • ionic liquid consisting essentially of an ionic liquid
  • s which consists of a bis (trifluoromethylsulfonyl) imide anion and an imidazolium cation
  • further additives like other ionic ones
  • Liquids, additives and / or inhibitors may be contained in the lubricant according to the invention.
  • the inventive method for compressing a gaseous, oxygen-containing medium further forming is proposed that the lubricant to at least 75% by volume, preferably at least 90% by volume consists of one or more ionic liquids according to claim 1.
  • the compounds to be provided according to the invention as lubricants are ionic liquids. These are low-melting, organic salts with melting points between 100 and -90 ° C, with most of the known ionic liquids already in liquid form at room temperature. In contrast to conventional molecular liquids, ionic liquids are entirely ionic and show new and unusual properties. Ionic liquids can be adapted comparatively well by varying the structure of anion and / or cation and by varying their combinations in terms of their properties to given technical problems. For this reason, they are often referred to as so-called "Designer Solvents". With conventional molecular liquids, however, only a variation of the structure is possible.
  • ionic liquids In contrast to conventional molecular liquids, ionic liquids also have the advantage that they have an extremely low vapor pressure. This means that, as long as their decomposition temperature is not reached, they do not noticeably evaporate even in a high vacuum. This results in the properties of incombustibility and environmental friendliness, since ionic liquids can not escape into the atmosphere.
  • the melting points of known ionic liquids are by definition below 100 ° C.
  • the so-called liquidus range-this is the range between melting point and thermal decomposition-is, as a rule, 300 ° C. or more.
  • Ionic liquids have high thermal stability. Often their decomposition points are above 250 ° C. The density and the mixing behavior with other liquids can be influenced or adjusted in the case of ionic liquids by the choice of the ions. Ionic liquids also have the advantage that they are electrically conductive and thereby can prevent electrical charging - which represent a potential hazard. Ionic liquids have the advantage that their complete separation from the compressed medium with a comparatively small amount of equipment is possible. A carryover of the ionic liquid by the compressed medium is now no longer possible, since ionic liquids - as mentioned above - have an extremely low vapor pressure.
  • a further advantageous embodiment of the method according to the invention for compressing a gaseous, oxygen-containing medium, which represents the subject of a dependent-Batent tapees-dadureh-characterized-that-mentioned in claim 1 ionic liquids or a mixture of the 1 ionic liquids has a viscosity of less than 1200 mPa s at -10 0 C and greater than 10 mPa s at +100 0 C.
  • lubricant group or to be selected from their ionic liquids are due to their exceptional properties in an excellent manner for use as a lubricant of a screw compressor, which serves the compression of a gaseous, oxygen-containing medium.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

L'invention concerne un procédé de compression d'un fluide gazeux oxygéné, de préférence d'oxygène, au moyen d'un compresseur à vis, lubrifié par un lubrifiant. Selon l'invention, on utilise comme lubrifiant un liquide composé principalement d'un liquide ionique, constitué d'un anion bis(trifluorométhylsulfonyl)imide et d'un cation imidazolium. Le 1-butyl-2,3-diméthylimidazolium bis(trifluorométhylsulfonyl)imide et/ou le 1-butyl-3-éthyl-2-méthylimidazolium bis(trifluorométhylsulfonyl)imide sont de préférence utilisés comme lubrifiants.
PCT/EP2008/006440 2007-08-24 2008-08-05 Compression d'un fluide oxygéné WO2009027008A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007040090.1 2007-08-24
DE102007040090A DE102007040090A1 (de) 2007-08-24 2007-08-24 Verdichten eines Sauerstoff-enthaltenden Mediums

Publications (1)

Publication Number Publication Date
WO2009027008A1 true WO2009027008A1 (fr) 2009-03-05

Family

ID=39744034

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/006440 WO2009027008A1 (fr) 2007-08-24 2008-08-05 Compression d'un fluide oxygéné

Country Status (2)

Country Link
DE (1) DE102007040090A1 (fr)
WO (1) WO2009027008A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9382816B2 (en) 2010-06-01 2016-07-05 Man Truck & Bus Ag Method and apparatus for operating a steam cycle process with a lubricated expander

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009015889A1 (de) * 2009-04-01 2010-10-07 Friedrich-Alexander-Universität Erlangen-Nürnberg Schmiermittel für Verbrennungskraftmaschine und hiermit betriebene Verbrennungskraftmaschine
DE102011110887A1 (de) 2011-08-17 2013-02-21 Merck Patent Gmbh Verwendung von Pyrrolidinium-Triflaten in Schmiermitteln oder Sperrflüssigkeiten
DE102013205027A1 (de) * 2013-03-21 2014-09-25 Siemens Aktiengesellschaft Dichtungseinrichtung und Turboverdichter mit einer derartigen Dichtungseinrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918750C (de) * 1952-11-23 1954-10-04 Linde Eismasch Ag Verfahren und Vorrichtung zum Pumpen verfluessigter Gase
DE2443815A1 (de) * 1974-09-13 1976-04-01 Deutsche Forsch Luft Raumfahrt Vorrichtung zur foerderung einer kryogenen fluessigkeit
DE2553700A1 (de) * 1975-11-28 1977-06-08 Linde Ag Verfahren zum betreiben eines geschlossenen gasturbinenkreislaufs
EP0099037A1 (fr) * 1982-07-01 1984-01-25 Linde Aktiengesellschaft Procédé et dispositif de production de gaz sous pression

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918750C (de) * 1952-11-23 1954-10-04 Linde Eismasch Ag Verfahren und Vorrichtung zum Pumpen verfluessigter Gase
DE2443815A1 (de) * 1974-09-13 1976-04-01 Deutsche Forsch Luft Raumfahrt Vorrichtung zur foerderung einer kryogenen fluessigkeit
DE2553700A1 (de) * 1975-11-28 1977-06-08 Linde Ag Verfahren zum betreiben eines geschlossenen gasturbinenkreislaufs
EP0099037A1 (fr) * 1982-07-01 1984-01-25 Linde Aktiengesellschaft Procédé et dispositif de production de gaz sous pression

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9382816B2 (en) 2010-06-01 2016-07-05 Man Truck & Bus Ag Method and apparatus for operating a steam cycle process with a lubricated expander

Also Published As

Publication number Publication date
DE102007040090A1 (de) 2009-02-26

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