CA2150392A1 - Recovery of glycols from used glycol-containing technical fluids - Google Patents

Recovery of glycols from used glycol-containing technical fluids

Info

Publication number
CA2150392A1
CA2150392A1 CA002150392A CA2150392A CA2150392A1 CA 2150392 A1 CA2150392 A1 CA 2150392A1 CA 002150392 A CA002150392 A CA 002150392A CA 2150392 A CA2150392 A CA 2150392A CA 2150392 A1 CA2150392 A1 CA 2150392A1
Authority
CA
Canada
Prior art keywords
glycol
containing technical
glycols
used glycol
recovery
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
CA002150392A
Other languages
French (fr)
Other versions
CA2150392C (en
Inventor
Jurgen Mohr
Wolf-Dieter Balzer
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to CA002150392A priority Critical patent/CA2150392C/en
Publication of CA2150392A1 publication Critical patent/CA2150392A1/en
Application granted granted Critical
Publication of CA2150392C publication Critical patent/CA2150392C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
    • C07C31/18—Polyhydroxylic acyclic alcohols
    • C07C31/20—Dihydroxylic alcohols
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
    • C07C41/01—Preparation of ethers
    • C07C41/34—Separation; Purification; Stabilisation; Use of additives
    • C07C41/40—Separation; Purification; Stabilisation; Use of additives by change of physical state, e.g. by crystallisation
    • C07C41/42—Separation; Purification; Stabilisation; Use of additives by change of physical state, e.g. by crystallisation by distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C43/00—Ethers; Compounds having groups, groups or groups
    • C07C43/02—Ethers
    • C07C43/03—Ethers having all ether-oxygen atoms bound to acyclic carbon atoms
    • C07C43/04—Saturated ethers
    • C07C43/10—Saturated ethers of polyhydroxy compounds
    • C07C43/11—Polyethers containing —O—(C—C—O—)n units with ≤ 2 n≤ 10
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A novel process for recovering glycols from used glycol-containing technical fluids is disclosed. Used glycol-containing technical fluids has added to it an organic solvent which forms with the glycols to be separated off, an azeotropic mixture which has a lower boiling point than the glycol itself. This azeotropic mixture is then distilled off. A typical used glycol-containing technical fluid as used is antifreeze. The preferred organic solvent is a xylene or a pseudocumene.
Prior to the addition of solvent which forms the azeotropic mixture with the glycol, a water portion in the used glycol-containing technical fluid, if present, can also be advantageously first removed by distillation.
CA002150392A 1995-05-29 1995-05-29 Recovery of glycols from used glycol-containing technical fluids Expired - Fee Related CA2150392C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002150392A CA2150392C (en) 1995-05-29 1995-05-29 Recovery of glycols from used glycol-containing technical fluids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002150392A CA2150392C (en) 1995-05-29 1995-05-29 Recovery of glycols from used glycol-containing technical fluids

Publications (2)

Publication Number Publication Date
CA2150392A1 true CA2150392A1 (en) 1996-11-30
CA2150392C CA2150392C (en) 2001-08-14

Family

ID=4155943

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002150392A Expired - Fee Related CA2150392C (en) 1995-05-29 1995-05-29 Recovery of glycols from used glycol-containing technical fluids

Country Status (1)

Country Link
CA (1) CA2150392C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104230658A (en) * 2014-09-26 2014-12-24 吉林化工学院 New method for separating ethanediol and 1, 2-pentanediol from corn fermentation liquid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104230658A (en) * 2014-09-26 2014-12-24 吉林化工学院 New method for separating ethanediol and 1, 2-pentanediol from corn fermentation liquid

Also Published As

Publication number Publication date
CA2150392C (en) 2001-08-14

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed