JPS5629527A - Purification of unreacted isoprene and recovered solvent - Google Patents

Purification of unreacted isoprene and recovered solvent

Info

Publication number
JPS5629527A
JPS5629527A JP10362479A JP10362479A JPS5629527A JP S5629527 A JPS5629527 A JP S5629527A JP 10362479 A JP10362479 A JP 10362479A JP 10362479 A JP10362479 A JP 10362479A JP S5629527 A JPS5629527 A JP S5629527A
Authority
JP
Japan
Prior art keywords
pipe
solvent
cyclopentadiene
isoprene
fraction
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.)
Granted
Application number
JP10362479A
Other languages
Japanese (ja)
Other versions
JPS6225129B2 (en
Inventor
Hachiro Osato
Minoru Inuzuka
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.)
Zeon Corp
Original Assignee
Nippon Zeon Co Ltd
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 Nippon Zeon Co Ltd filed Critical Nippon Zeon Co Ltd
Priority to JP10362479A priority Critical patent/JPS5629527A/en
Publication of JPS5629527A publication Critical patent/JPS5629527A/en
Publication of JPS6225129B2 publication Critical patent/JPS6225129B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

PURPOSE: To remove cyclopentadiene, in high efficiency, from a mixture of unreacted isoprene and a solvent recovered from isoprene polymerization process, by extracting a part of recovered cyclopentadiene fraction obtained by the distillation and recovery of said mixture, from the bottom of the distillation column.
CONSTITUTION: Recovered fraction obtained from the isoprene polymerization process and containing unreacted isoprene and a solvent (e.g. ≤5C aliphatic hydrocarbon), is supplied to the distillation column 2 through the pipe 1 to perform distillation, and isoprene and the solvent are obtained through the pipe 3. The side stream is extracted through the pipe 5 as gaseous state, and distilled in a distillation column 6. Purified recovery fraction is obtained through the pipe 7. The bottom fraction is recycled through the pipe 8 after the heat recovery and cooling. The concentrated cyclopentadiene fraction obtained through the pipe 9 is introduced into the solvent recovery column 10 as side stream, and cyclopentadiene is extracted through the pipe 11. The recovered solvent is taken out from the bottom and recycled through the pipe 12 to the column 6.
EFFECT: The required amount of cyclopentadiene can be removed by treating a small amount of the fraction.
COPYRIGHT: (C)1981,JPO&Japio
JP10362479A 1979-08-16 1979-08-16 Purification of unreacted isoprene and recovered solvent Granted JPS5629527A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10362479A JPS5629527A (en) 1979-08-16 1979-08-16 Purification of unreacted isoprene and recovered solvent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10362479A JPS5629527A (en) 1979-08-16 1979-08-16 Purification of unreacted isoprene and recovered solvent

Publications (2)

Publication Number Publication Date
JPS5629527A true JPS5629527A (en) 1981-03-24
JPS6225129B2 JPS6225129B2 (en) 1987-06-01

Family

ID=14358915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10362479A Granted JPS5629527A (en) 1979-08-16 1979-08-16 Purification of unreacted isoprene and recovered solvent

Country Status (1)

Country Link
JP (1) JPS5629527A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6110102U (en) * 1984-06-25 1986-01-21 晃一 星野 automatic hair curler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6110102U (en) * 1984-06-25 1986-01-21 晃一 星野 automatic hair curler

Also Published As

Publication number Publication date
JPS6225129B2 (en) 1987-06-01

Similar Documents

Publication Publication Date Title
GB1037255A (en) Process and apparatus for the continuous distillation of mixtures
KR910007860A (en) Vinyl Acetate Separation
KR880012483A (en) Dichlorosilane Production Process and Apparatus
KR100772760B1 (en) Wastewater Treatment in the Formation Method of Formic Acid Anhydrous
SU963461A3 (en) Process for isolating acrylic acid
MY101548A (en) Cryogenic process for the removal of acid gases from gas mixtures by means of a solvent
GB2156812A (en) Recovery of acetic anhydride
GB1531408A (en) Butadiene recovery process
US3004829A (en) Hydrogen fluoride process
GB1470187A (en) Method and apparatus for purifying gas
GB1518372A (en) Chlorine recovery process
JPS5498718A (en) Recovery of acrylic acid
US3109864A (en) Oxidation of hydrocarbons
JP3709014B2 (en) Method for recovering monomer from waste acrylic resin
KR960031412A (en) Method for producing isopropyl alcohol
JPS5629527A (en) Purification of unreacted isoprene and recovered solvent
KR20020070348A (en) Method for Cleaning Off-Gas Flows
JPS5646874A (en) Purification of butylene oxide
US4018843A (en) Process for the obtaining of isobutylene of high purity
US3794690A (en) Method for the recovery of isobutylene
US3837144A (en) Separation of acetylene from ethylene-bearing gases
US3054727A (en) Process for purification of benzene
JP3812851B2 (en) Method for separating phenol from 1-phenylethanol, acetophenone or mixtures thereof
US3248308A (en) Isoprene purification by extractive distillation with acetonitrile and recovery of acetonitrile thus used
JPS57129822A (en) Recovering and purifying method for hydrocyanic acid