GB1199120A - Process for Separating Methanol from a Mixture Thereof With Methyl Acetate - Google Patents

Process for Separating Methanol from a Mixture Thereof With Methyl Acetate

Info

Publication number
GB1199120A
GB1199120A GB58946/68A GB5894668A GB1199120A GB 1199120 A GB1199120 A GB 1199120A GB 58946/68 A GB58946/68 A GB 58946/68A GB 5894668 A GB5894668 A GB 5894668A GB 1199120 A GB1199120 A GB 1199120A
Authority
GB
United Kingdom
Prior art keywords
methanol
column
mixture
methyl acetate
water
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
GB58946/68A
Inventor
Pierre Frechet
Jean-Claude Jacquemet
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.)
Rhone Poulenc SA
Original Assignee
Rhone Poulenc SA
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 Rhone Poulenc SA filed Critical Rhone Poulenc SA
Publication of GB1199120A publication Critical patent/GB1199120A/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
    • B01D3/001—Processes specially adapted for distillation or rectification of fermented solutions
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
    • C07C29/82—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation by azeotropic distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • C07C29/86—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by liquid-liquid treatment
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1,199,120. Sephrating methanol from methyl acetate. PHONE-POULENC S.A. 11 Dec., 1968 [12 Dec., 1967], No. 58946/68. Heading C2C. A process for the separation of methanol from a crude mixture thereof with methyl acetate containing non-volatile materials and optionally water, such as is obtained in the manufacture of polyvinyl alcohol by methanolysis of polyvinyl acetate, the methanol constituting at least 25% of the combined weight of methanol and methyl acetate comprises: feeding the said mixture to a first fractionation column heated by direct injection of steam; removing an essentially anhydrous mixture of the methanol and methyl acetate as vapour overhead from the said column and liquid water containing the said non-volatile materials from the foot of the said column; feeding the said mixture of methanol and methyl acetate from the said first column to a second fractionation column; removing an azeotropic mixture of methanol and methyl acetate overhead from the second column and a first fraction of essentially pure liquid methanol from the foot of the said second column; feeding the said azeotropic mixture of methanol and methyl acetate to a third fractionation column in which the said mixture is contacted with liquid water; removing a liquid mixture of water and methanol essentially free from methyl acetate from the foot of the said third column and a mixture of water and methyl acetate essentially free from methanol as overhead from the said third column; and rectifying the said liquid mixture of water and methanol from the said third column to separate a second fraction of substantially pure methanol therefrom. If the mixture is anhydrous, it is fed to the top of the first column and if it contains water, preferably to an intermediate point. The first column should be designed to avoid clogging with solid impurities.
GB58946/68A 1967-12-12 1968-12-11 Process for Separating Methanol from a Mixture Thereof With Methyl Acetate Expired GB1199120A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR131941 1967-12-12

Publications (1)

Publication Number Publication Date
GB1199120A true GB1199120A (en) 1970-07-15

Family

ID=8643111

Family Applications (1)

Application Number Title Priority Date Filing Date
GB58946/68A Expired GB1199120A (en) 1967-12-12 1968-12-11 Process for Separating Methanol from a Mixture Thereof With Methyl Acetate

Country Status (6)

Country Link
BE (1) BE725295A (en)
DE (1) DE1814305A1 (en)
FR (1) FR1558421A (en)
GB (1) GB1199120A (en)
LU (1) LU57516A1 (en)
NL (1) NL6817383A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3984988A1 (en) 2020-10-19 2022-04-20 Itelyum Regeneration S.p.A. Recovery process of methanol waste
CN116082159A (en) * 2022-12-22 2023-05-09 重庆科技学院 Method for separating ethyl acetate-methanol-water by coupling heterogeneous phase and three-tower rectification

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051451B2 (en) * 1978-11-06 1985-11-14 三菱レイヨン株式会社 Manufacturing method of tertiary butyl alcohol
CN112619194B (en) * 2020-12-29 2022-07-08 内蒙古双欣环保材料股份有限公司 High-temperature hot water comprehensive utilization device of polyvinyl alcohol waste liquid recovery system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3984988A1 (en) 2020-10-19 2022-04-20 Itelyum Regeneration S.p.A. Recovery process of methanol waste
CN116082159A (en) * 2022-12-22 2023-05-09 重庆科技学院 Method for separating ethyl acetate-methanol-water by coupling heterogeneous phase and three-tower rectification
CN116082159B (en) * 2022-12-22 2024-06-04 重庆科技学院 Method for separating ethyl acetate-methanol-water by coupling heterogeneous phase and three-tower rectification

Also Published As

Publication number Publication date
NL6817383A (en) 1969-06-16
DE1814305A1 (en) 1969-08-07
FR1558421A (en) 1969-02-28
LU57516A1 (en) 1969-07-31
BE725295A (en) 1969-06-11

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees