GB826284A - Improved monomer recovery process - Google Patents

Improved monomer recovery process

Info

Publication number
GB826284A
GB826284A GB17869/57A GB1786957A GB826284A GB 826284 A GB826284 A GB 826284A GB 17869/57 A GB17869/57 A GB 17869/57A GB 1786957 A GB1786957 A GB 1786957A GB 826284 A GB826284 A GB 826284A
Authority
GB
United Kingdom
Prior art keywords
solvent
monomer
streams
zone
cooled
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
GB17869/57A
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.)
Phillips Petroleum Co
Original Assignee
Phillips Petroleum Co
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 Phillips Petroleum Co filed Critical Phillips Petroleum Co
Publication of GB826284A publication Critical patent/GB826284A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/06—Flash distillation
    • B01D3/065—Multiple-effect flash distillation (more than two traps)
    • 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
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond

Landscapes

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

Abstract

Monomer is recovered from a solution containing a normally gaseous monomer, solvent and polymer by flashing the solution in a series of stages at progressively reduced pressures, so forming a plurality of vapour streams at various pressures. These streams are cooled to <PICT:0826284/III/1> form condensate which is mainly solvent and any remaining vapours (chiefly monomer) are removed therefrom. Referring to Fig. 1, effluent from polymerization reactor 11 and comprising polymer, solvent and monomer is heated in heat exchanger 13 and passed to reduced pressure flashing zone 14 where monomer and solvent vaporize through conduit 23 are cooled in heat exchanger 24 to give monomer stream 26 and solvent stream 27. The liquid stream from zone 14 is flashed twice more in zones 17 under lower pressure and 21 under still lower pressure. The several liquid solvent streams are combined and pass to stripping zone 41 and can be recycled to polymerization reactor 11, while the several monomer vapour streams are recompressed to polymerization pressure, combined and recycled. The solvent streams need not all be recombined before recycling.ALSO:Monomer is removed from a solution containing a normally gaseous monomer, solvent and polymer, especially polyolefins prepared using a chromium oxide catalyst, by flashing the solution in a series of stages at progressively reduced pressures, so forming a plurality of vapour streams at various pressures. These streams are cooled to form condensate which is mainly solvent and any remaining vapours, mainly monomer, are removed from the condensed solvent. The solvent and monomer may be returned to the polymerization zone.
GB17869/57A 1956-06-21 1957-06-05 Improved monomer recovery process Expired GB826284A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US826284XA 1956-06-21 1956-06-21

Publications (1)

Publication Number Publication Date
GB826284A true GB826284A (en) 1959-12-31

Family

ID=22172348

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17869/57A Expired GB826284A (en) 1956-06-21 1957-06-05 Improved monomer recovery process

Country Status (3)

Country Link
BE (1) BE558534A (en)
FR (1) FR1176810A (en)
GB (1) GB826284A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529795A (en) * 1978-06-15 1985-07-16 Hoechst Aktiengesellschaft Process for recovering and purifying unreacted propylene during mass polymerization of liquid propylene
CN107697494A (en) * 2017-09-14 2018-02-16 江苏航天惠利特环保科技有限公司 A kind of coupled method device for recovering oil and gas
WO2021004684A1 (en) * 2019-07-08 2021-01-14 Borealis Ag Polymerization process

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE759962A (en) * 1969-12-08 1971-06-07 Exxon Research Engineering Co POLYMERIZATION PROCESS

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4529795A (en) * 1978-06-15 1985-07-16 Hoechst Aktiengesellschaft Process for recovering and purifying unreacted propylene during mass polymerization of liquid propylene
CN107697494A (en) * 2017-09-14 2018-02-16 江苏航天惠利特环保科技有限公司 A kind of coupled method device for recovering oil and gas
WO2021004684A1 (en) * 2019-07-08 2021-01-14 Borealis Ag Polymerization process
CN114080400A (en) * 2019-07-08 2022-02-22 博里利斯股份公司 Polymerization process

Also Published As

Publication number Publication date
BE558534A (en)
FR1176810A (en) 1959-04-16

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