GB1338280A - Process for the high pressure production of polyethylene - Google Patents

Process for the high pressure production of polyethylene

Info

Publication number
GB1338280A
GB1338280A GB2929071A GB2929071A GB1338280A GB 1338280 A GB1338280 A GB 1338280A GB 2929071 A GB2929071 A GB 2929071A GB 2929071 A GB2929071 A GB 2929071A GB 1338280 A GB1338280 A GB 1338280A
Authority
GB
United Kingdom
Prior art keywords
ethylene
mixture
polyethylene
expansion valve
separated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2929071A
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.)
SnamProgetti SpA
Original Assignee
SnamProgetti SpA
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 SnamProgetti SpA filed Critical SnamProgetti SpA
Publication of GB1338280A publication Critical patent/GB1338280A/en
Expired legal-status Critical Current

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
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2415—Tubular reactors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F110/02—Ethene
    • 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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00094—Jackets
    • 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
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00105—Controlling the temperature by indirect heating or cooling employing heat exchange fluids part or all of the reactants being heated or cooled outside the reactor while recycling
    • B01J2219/00108—Controlling the temperature by indirect heating or cooling employing heat exchange fluids part or all of the reactants being heated or cooled outside the reactor while recycling involving reactant vapours

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

1338280 Polymerizing ethylene SNAM PROGETTI SpA 22 June 1971 [23 June 1970] 29290/71 Heading C3P Polyethylene is polymerized at elevated pressure in a tubular reactor by a process which comprises (1) expanding the reaction mixture from a first expansion valve, (2) separating the expanded mixture in a high pressure separator into ethylene and a concentrated mixture of polyethylene and ethylene, (3) expanding said concentrated mixture in a second expansion valve, (4) separating the expanded mixture from (3) in a low pressure separator into polyethylene and the remaining unreacted ethylene, (5) withdrawing polyethylene from the low pressure separator, (6) mixing ethylene separated in (4) with fresh ethylene and compressing the mixture in a first compressor, (7) introducing the compressed mixture into the mixture (1) from the first expansion valve, (8) compressing in a second compressor the ethylene separated in (2), and (9) introducing the compressed ethylene from (8) into the reactor. The separated ethylene may be cooled, and low molecular weight polymers removed, before compression. Polymerization may be effected using oxygen, an organic peroxide or azo compound as catalyst, optionally in the presence of chain transfer agents, e.g. propane, butane, propylene or butene, or comonomers, e.g. vinyl acetate or vinyl acrylate; and pressure pulses may be imparted to the reaction mixture. Apparatus suitable for carrying out the process of the invention is described and illustrated, and in Example (2) ethylene is polymerized in the presence of oxygen, decanoyl peroxide and propylene.
GB2929071A 1970-06-23 1971-06-22 Process for the high pressure production of polyethylene Expired GB1338280A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2639370 1970-06-23

Publications (1)

Publication Number Publication Date
GB1338280A true GB1338280A (en) 1973-11-21

Family

ID=11219388

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2929071A Expired GB1338280A (en) 1970-06-23 1971-06-22 Process for the high pressure production of polyethylene

Country Status (12)

Country Link
BE (1) BE768827A (en)
BG (1) BG25100A3 (en)
CS (1) CS172353B2 (en)
DE (1) DE2131145C3 (en)
FR (1) FR2099267A5 (en)
GB (1) GB1338280A (en)
HU (1) HU164125B (en)
LU (1) LU63396A1 (en)
NL (1) NL165183C (en)
PL (1) PL81822B1 (en)
RO (1) RO61959A (en)
SU (1) SU428611A3 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6423791B1 (en) 1990-03-16 2002-07-23 Exxonmobil Oil Corporation Process for the production of linear low density ethylene copolymers
WO2007018871A1 (en) * 2005-08-05 2007-02-15 Exxonmobil Chemical Patents Inc. Process and apparatus for manufacturing ethylene polymers and copolymers
WO2007134670A1 (en) * 2006-05-19 2007-11-29 Exxonmobil Chemical Patents Inc. An apparatus for the production of polyethylene and ethylene copolymers
WO2010071653A1 (en) * 2008-12-18 2010-06-24 Exxonmobil Chemical Patents Inc. High pressure polymerization process
CN101300279B (en) * 2005-11-07 2010-12-29 埃克森美孚化学专利公司 An apparatus and method for the production of polyethylene and ethylene copolymers
US10358511B2 (en) 2009-12-22 2019-07-23 Exxonmobil Chemical Patents Inc. Separation vessels for use in polymerization processes and methods for cleaning same
US10597469B2 (en) 2016-09-19 2020-03-24 Lg Chem, Ltd. Method for recovering ethylene and vinyl-based comonomer
US10626195B2 (en) 2015-11-18 2020-04-21 Basell Polyolefine Gmbh Polymerization process with a partial shutdown phase
CN111100233A (en) * 2018-10-25 2020-05-05 中国石油化工股份有限公司 Synthesis method of high-pressure polyethylene for repackaging film
CN111808220A (en) * 2020-07-06 2020-10-23 天津全和诚科技有限责任公司 Preparation method of novel polyethylene functional material

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313399A1 (en) * 1975-06-03 1976-12-31 Charbonnages Ste Chimique ETHYLENE POLYMERIZATION AND COPOLYMERIZATION PROCESS USING A GAS INJECTION DEVICE
DE2946954C2 (en) * 1979-11-21 1984-03-15 EC Erdölchemie GmbH, 5000 Köln Process for stabilizing high pressure polyethylene
DE3844180A1 (en) * 1988-12-29 1990-07-05 Hoechst Ag METHOD FOR SEPARATING VOLATILE COMPONENTS FROM REACTION MIXTURES OBTAINED BY HIGH PRESSURE POLYMERIZATION
US5521010A (en) * 1994-03-25 1996-05-28 The Furukawa Electric Co., Ltd. Polyethylene for an insulation layer of a power cable and a crosslinked polyethylene insulated power cable using the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306889A (en) * 1963-05-15 1967-02-28 Koppers Co Inc Ethylene polymerization
US3372154A (en) * 1965-04-09 1968-03-05 Union Carbide Corp Ethylene polymer powders and process therefor
US3509115A (en) * 1968-12-11 1970-04-28 Nat Distillers Chem Corp Process of preparing ethylene-vinyl acetate copolymers

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6423791B1 (en) 1990-03-16 2002-07-23 Exxonmobil Oil Corporation Process for the production of linear low density ethylene copolymers
US7582709B2 (en) 2005-08-05 2009-09-01 Exxonmobil Chemical Patents Inc. Process and apparatus for manufacturing ethylene polymers and copolymers
WO2007018871A1 (en) * 2005-08-05 2007-02-15 Exxonmobil Chemical Patents Inc. Process and apparatus for manufacturing ethylene polymers and copolymers
CN101300279B (en) * 2005-11-07 2010-12-29 埃克森美孚化学专利公司 An apparatus and method for the production of polyethylene and ethylene copolymers
US7837950B2 (en) 2006-05-19 2010-11-23 Exxonmobil Chemical Patents Inc. Apparatus for the production of polyethylene and ethylene copolymers
WO2007134670A1 (en) * 2006-05-19 2007-11-29 Exxonmobil Chemical Patents Inc. An apparatus for the production of polyethylene and ethylene copolymers
KR101493531B1 (en) * 2006-05-19 2015-02-13 엑손모빌 케미칼 패턴츠 인코포레이티드 An apparatus for the production of polyethylene and ethylene copolymers
WO2010071653A1 (en) * 2008-12-18 2010-06-24 Exxonmobil Chemical Patents Inc. High pressure polymerization process
US8445606B2 (en) 2008-12-18 2013-05-21 Exxonmobil Chemical Patents Inc. High pressure polymerization process
US10358511B2 (en) 2009-12-22 2019-07-23 Exxonmobil Chemical Patents Inc. Separation vessels for use in polymerization processes and methods for cleaning same
US10626195B2 (en) 2015-11-18 2020-04-21 Basell Polyolefine Gmbh Polymerization process with a partial shutdown phase
US10597469B2 (en) 2016-09-19 2020-03-24 Lg Chem, Ltd. Method for recovering ethylene and vinyl-based comonomer
CN111100233A (en) * 2018-10-25 2020-05-05 中国石油化工股份有限公司 Synthesis method of high-pressure polyethylene for repackaging film
CN111808220A (en) * 2020-07-06 2020-10-23 天津全和诚科技有限责任公司 Preparation method of novel polyethylene functional material

Also Published As

Publication number Publication date
PL81822B1 (en) 1975-10-31
SU428611A3 (en) 1974-05-15
BG25100A3 (en) 1978-07-12
DE2131145B2 (en) 1973-07-26
FR2099267A5 (en) 1972-03-10
HU164125B (en) 1973-12-28
RO61959A (en) 1977-11-15
CS172353B2 (en) 1976-12-29
NL7108630A (en) 1971-12-27
BE768827A (en) 1971-11-03
NL165183B (en) 1980-10-15
DE2131145C3 (en) 1982-01-14
NL165183C (en) 1981-03-16
DE2131145A1 (en) 1971-12-30
LU63396A1 (en) 1971-09-22

Similar Documents

Publication Publication Date Title
GB1338280A (en) Process for the high pressure production of polyethylene
GB1419012A (en) Production of polyethylene
GB1413613A (en) Process for the dry polymerisation of olefins
TW357152B (en) Process for polymerising olefin in gas phase
AR000359A1 (en) Procedure for the preparation of polyethylene
US2395381A (en) Process of preparing ethylene polymers
GB880948A (en) A process for separating ethylene polymers under high pressure and apparatus therefor
EP0272512A3 (en) Process for the reduction of the emission of hydrocarbons during relaxation processes in high-pressure polymerization reactors
KR960031492A (en) Polymerization of Gaseous Olefins
GB1362324A (en) Process for the polymerization of olefins
GB941106A (en) Polymerisation of vinyl fluoride
GB579894A (en) Preparation of solid and semi-solid polymers of olefinic hydrocarbons
GB979522A (en) Production of a copolymer
GB1416835A (en) Process for preparing ethylene polymers
KR840000586A (en) Method for producing polyethylene having certain physicochemical properties
GB827682A (en) Recovery of olefin polymers
GB884583A (en) Process of polymerizing or copolymerizing olefines
GB1126756A (en) Process for the production of ethylene polymers or copolymers of ethylene
GB1313836A (en) Process for the preparation of ethylene polymers
GB1173167A (en) Process for the Production of Ethylene Polymers and Co-Polymers of Ethylene
EP0266543A3 (en) Separating system to reduce the emission of solids during relaxation processes in high pressure polymerization reactors
GB836588A (en) Process for polymerising ethylene
GB1387920A (en) Method for preparing divinyl-styrene rubbers
GB1147019A (en) Process and apparatus for polymerisation of olefins
GB1411465A (en) Continuous production of aqueous dispersions of vinyl-alkanoate ethylene copolymers

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee