EP0080919A1 - Composition lubrifiante améliorée utilisable dans un procédé de polymérisation de l'éthylène sous haute pression - Google Patents

Composition lubrifiante améliorée utilisable dans un procédé de polymérisation de l'éthylène sous haute pression Download PDF

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Publication number
EP0080919A1
EP0080919A1 EP82402095A EP82402095A EP0080919A1 EP 0080919 A1 EP0080919 A1 EP 0080919A1 EP 82402095 A EP82402095 A EP 82402095A EP 82402095 A EP82402095 A EP 82402095A EP 0080919 A1 EP0080919 A1 EP 0080919A1
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EP
European Patent Office
Prior art keywords
lubricating composition
ethylene
composition according
reactor
compressor
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.)
Withdrawn
Application number
EP82402095A
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German (de)
English (en)
French (fr)
Inventor
Pierre Gloriod
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.)
Orkem SA
Original Assignee
Chimique des Charbonnages SA
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Publication of EP0080919A1 publication Critical patent/EP0080919A1/fr
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    • 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
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • 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
    • C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
    • C10M101/02—Petroleum fractions
    • 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
    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
    • C10M107/08—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation containing butene
    • 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
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/04—Hydroxy compounds
    • C10M129/10—Hydroxy compounds having hydroxy groups bound to a carbon atom of a six-membered aromatic ring
    • 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
    • C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/24—Aldehydes; Ketones
    • 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
    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/20—Thiols; Sulfides; Polysulfides
    • C10M135/22—Thiols; Sulfides; Polysulfides containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
    • C10M135/26—Thiols; Sulfides; Polysulfides containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing carboxyl groups; Derivatives thereof
    • 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
    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
    • 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/102—Aliphatic fractions
    • C10M2203/1025—Aliphatic fractions used as base material
    • 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/104—Aromatic fractions
    • C10M2203/1045—Aromatic fractions used as base material
    • 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/106—Naphthenic fractions
    • C10M2203/1065—Naphthenic fractions used as base material
    • 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
    • C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/108—Residual fractions, e.g. bright stocks
    • C10M2203/1085—Residual fractions, e.g. bright stocks used as base material
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/026—Butene
    • 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
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/026—Butene
    • C10M2205/0265—Butene used as base material
    • 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
    • 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/027—Neutral salts thereof
    • 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
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/08—Aldehydes; Ketones
    • 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
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
    • C10M2215/062—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings containing hydroxy groups bound to the aromatic ring
    • 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
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
    • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
    • C10M2219/085—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing carboxyl groups; Derivatives thereof
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/042—Metal salts thereof
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/049—Phosphite
    • 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
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/10—Phosphatides, e.g. lecithin, cephalin

Definitions

  • the present invention relates on the one hand to an improved lubricating composition and on the other hand to the application of said composition to the lubrication of ethylene compressors involved in a high pressure polymerization process.
  • the double problem facing this process consists firstly in the fact that the free radical generators recycled with the gaseous ethylene phase coming from the separator risk initiating the polymerization of ethylene in the recycling line and d '' foul this line by polymer formation, and secondly in the fact that a parasitic polymerization can also occur - by the same mechanism - on the discharge of the compressor and consequently can clog the connection pipe between compressor and reactor.
  • These drawbacks inevitably oblige the operators of polymerization units to periodically clean, either after dismantling the pipes or otherwise, the parts of the unit where the parasitic phenomena described above occur.
  • the present invention proposes to remedy the aforementioned drawbacks by modifying the lubrication mode of the compressor responsible for recompressing the ethylene gas from the separator to the pressure level of the reactor.
  • French Patent No. 1,353,328 describes a lubricating composition for high temperatures comprising from 0.5 to 10 by weight of an antioxidant, the latter being able to be an organic phosphite or a product of phenolic type. Used at such concentrations, these products have the function of protecting the lubricant against oxidation.
  • French Patent No. 1,353,328 describes a lubricating composition for high temperatures comprising from 0.5 to 10 by weight of an antioxidant, the latter being able to be an organic phosphite or a product of phenolic type. Used at such concentrations, these products have the function of protecting the lubricant against oxidation.
  • 1,404,773 describes mixtures comprising from 95 to 5% by weight of a paraffinic wax and from 5 to 95 by weight of a polyolefin, (polyethylene or polybutene-1), stabilized against degradation by oxidation by the incorporation of 0.05 to 1 part by weight per 100 parts of polyolefin of a certain type of polyolefinic phenol and 0.05 to 1 part by weight per 100 parts of polyolefin of a certain type of phosphite.
  • a polyolefin polyethylene or polybutene-1
  • the present invention firstly relates to an improved lubricating composition
  • an oil consisting for example of a mixture of paraffins and of polyisobutylene, and where appropriate a lubricating additive, characterized in that it also comprises 0.05 at 0.25% by weight of a radical polymerization inhibitor chosen from quinones, phenol derivatives, phosphites and alkyl thiodicarboxylates.
  • the lubricant composition according to the invention preferably comprises paraffins to the exclusion of any hydro-refined aromatic constituent.
  • Non-limiting examples of inhibitors which can be used according to the invention including di-terbutylparacresol, lauryl thiodipropionate, N-octadecyl (4 'hydroxy-3', 5 'diterbutylphenol) propionate, etc.
  • lubricating composition according to the invention it is possible to use any usual lubrication additive such as for example lecithin as well as, if necessary, a usual corrosion inhibitor.
  • the composition according to the invention is produced by simple mixing of the various constituents.
  • a second object of the present invention is a process for the polymerization of ethylene and for the copolymerization of ethylene with at least one comonomer, in a reactor under pressure of between 1000 and 5000 bars and in the presence of at least one compound generating free radicals, according to which the mixture of unconverted ethylene and of polymer coming from the reactor is expanded to a pressure between 100 and 500 bars then sent to a separator from where the gas phase of ethylene and, if necessary , comonomer is recycled to at least one compressor capable of recompressing it to the pressure of the reactor, characterized in that said compressor is lubricated by means of the improved lubricating composition described above.
  • Compounds generating free radicals used in such a process are in particular peroxides and peresters.
  • the comonomers which can be used in such a process are on the one hand the olefins having from 3 to 8 carbon atoms such as in particular propylene, butene-1, methyl-4 pentene-1, hexene-1, octene-1 and on the other hand polar comonomers such as carbon monoxide, maleic anhydride, alkyl acrylates and methacrylates, alkyl monomaleates and dialkyl maleates, vinyl acetate, etc.
  • the method according to the invention has the effect of eliminating or considerably reducing the fouling of the connecting pipes between compressor and reactor on the one hand, and between separator and compressor on the other hand.
  • the cleaning operations of the installation can be carried out much less frequently than in conventional methods, which makes it possible to considerably limit the economic losses due to the lowering of the operating rate of the installation.
  • the ethylene polymerization installation comprises a 2,150 bar pressure reactor, a 300 bar pressure separator and a compressor capable of recompressing the ethylene gas from the pressure level of the separator to that of the reactor.
  • the discharge pipes of said compressor are fitted with double-shells in which cold water circulates in order to cool the ethylene gas to a temperature of 40 ° C.
  • the compressor is lubricated by means of an ordinary lubricating composition, comprising an oil based on a mixture of paraffins and polyisobutylene.
  • an ordinary lubricating composition comprising an oil based on a mixture of paraffins and polyisobutylene.
  • the ethylene polymerization installation used is identical to that of the previous example.
  • the compressor is lubricated by means of an improved lubricating composition according to the invention, that is to say the lubricating composition of the previous example to which 0.1% by weight of di-terbutylparacresol is added.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Lubricants (AREA)
  • Polymerisation Methods In General (AREA)
EP82402095A 1981-11-30 1982-11-17 Composition lubrifiante améliorée utilisable dans un procédé de polymérisation de l'éthylène sous haute pression Withdrawn EP0080919A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8122389A FR2517322A1 (fr) 1981-11-30 1981-11-30 Composition lubrifiante amelioree utilisable dans un procede de polymerisation de l'ethylene sous haute pression
FR8122389 1981-11-30

Publications (1)

Publication Number Publication Date
EP0080919A1 true EP0080919A1 (fr) 1983-06-08

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EP82402095A Withdrawn EP0080919A1 (fr) 1981-11-30 1982-11-17 Composition lubrifiante améliorée utilisable dans un procédé de polymérisation de l'éthylène sous haute pression

Country Status (4)

Country Link
EP (1) EP0080919A1 (enExample)
JP (1) JPS58103593A (enExample)
CA (1) CA1207316A (enExample)
FR (1) FR2517322A1 (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2533638A1 (fr) * 1982-09-29 1984-03-30 El Paso Polyolefins Procede pour reduire les fuites de gaz d'un compresseur dans un procede de polymerisation
CN114606036A (zh) * 2020-12-08 2022-06-10 Sk新技术株式会社 用于抑制堵塞的润滑组合物和使用其抑制堵塞的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2525445B2 (ja) * 1988-01-29 1996-08-21 出光興産株式会社 潤滑油組成物

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2028349A (en) * 1932-07-01 1936-01-21 Ig Farbenindustrie Ag Lubricant and process of making same
FR1353328A (fr) * 1962-04-09 1964-02-21 Acheson Ind Inc Lubrifiants pour hautes températures
FR1404773A (fr) * 1963-07-08 1965-07-02 Allied Chem Mélanges de cires paraffiniques et de polyoléfines, stabilisés contre la dégradation par oxydation
DE2019381A1 (de) * 1969-05-19 1970-11-26 Mol En Corp Gegen ploetzlichen Druck bestaendiges,bei dauerndem Druck nachgebendes Gemisch
FR2313399A1 (fr) * 1975-06-03 1976-12-31 Charbonnages Ste Chimique Procede de polymerisation et de copolymerisation de l'ethylene utilisant un dispositif d'injection de gaz

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2028349A (en) * 1932-07-01 1936-01-21 Ig Farbenindustrie Ag Lubricant and process of making same
FR1353328A (fr) * 1962-04-09 1964-02-21 Acheson Ind Inc Lubrifiants pour hautes températures
FR1404773A (fr) * 1963-07-08 1965-07-02 Allied Chem Mélanges de cires paraffiniques et de polyoléfines, stabilisés contre la dégradation par oxydation
DE2019381A1 (de) * 1969-05-19 1970-11-26 Mol En Corp Gegen ploetzlichen Druck bestaendiges,bei dauerndem Druck nachgebendes Gemisch
FR2313399A1 (fr) * 1975-06-03 1976-12-31 Charbonnages Ste Chimique Procede de polymerisation et de copolymerisation de l'ethylene utilisant un dispositif d'injection de gaz

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2533638A1 (fr) * 1982-09-29 1984-03-30 El Paso Polyolefins Procede pour reduire les fuites de gaz d'un compresseur dans un procede de polymerisation
CN114606036A (zh) * 2020-12-08 2022-06-10 Sk新技术株式会社 用于抑制堵塞的润滑组合物和使用其抑制堵塞的方法
CN114606036B (zh) * 2020-12-08 2025-09-30 Sk新技术株式会社 用于抑制堵塞的润滑组合物和使用其抑制堵塞的方法

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FR2517322B1 (enExample) 1985-05-10
CA1207316A (fr) 1986-07-08
JPS58103593A (ja) 1983-06-20
FR2517322A1 (fr) 1983-06-03

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