GB829432A - Process for manufacturing pure aromatic substances from industrial hydrocarbon mixtures - Google Patents

Process for manufacturing pure aromatic substances from industrial hydrocarbon mixtures

Info

Publication number
GB829432A
GB829432A GB36265/56A GB3626556A GB829432A GB 829432 A GB829432 A GB 829432A GB 36265/56 A GB36265/56 A GB 36265/56A GB 3626556 A GB3626556 A GB 3626556A GB 829432 A GB829432 A GB 829432A
Authority
GB
United Kingdom
Prior art keywords
extraction
aromatic hydrocarbons
recovered
extract
hydrocarbons
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
GB36265/56A
Inventor
Otto Bankowski
Martin Kothnig
Harry Klemt
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.)
Leuna Werke GmbH
Leuna Werke Walter Ulbright Germany VEB
Original Assignee
Leuna Werke GmbH
Leuna Werke Walter Ulbright Germany VEB
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 Leuna Werke GmbH, Leuna Werke Walter Ulbright Germany VEB filed Critical Leuna Werke GmbH
Priority to GB36265/56A priority Critical patent/GB829432A/en
Publication of GB829432A publication Critical patent/GB829432A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/04—Purification; Separation; Use of additives by distillation
    • C07C7/05—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds
    • C07C7/08—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds by extractive distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
    • C07C15/02—Monocyclic hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G21/00—Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Aromatic hydrocarbons are separated from technical mixtures containing them by extract-ing in the liquid phase with formamde or an N-alkyl derivative thereof, withdrawing the aromatic hydrocarbons from the extract so formed by contacting with a second extraction medium and recovering the aromatic hydrocarbons from the second extract by distillation; the second solvent being a good solvent for aromatic hydrocarbons, immiscible or only slightly miscible with the formamide and having a boiling-range at least 20 DEG C. below or 50 DEG C. above that of the hydrocarbons being recovered. The solvent in the first extraction preferably contains up to 20% by weight of water, and after the hydrocarbons have been removed by the second extraction, is recycled to the first stage. Specified second solvents are butanes and pentanes and technical hydrocarbon mixtures boiling above 200 DEG C. when benzene, toluene and xylene are being recovered. Prior to extraction the feed may be fractionated to obtain a cut boiling in the same range as the desired aromatics, e.g. between 65 DEG or 70 DEG C. and 145 DEG or 160 DEG C., when benzene to xylene are recovered.
GB36265/56A 1956-11-27 1956-11-27 Process for manufacturing pure aromatic substances from industrial hydrocarbon mixtures Expired GB829432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB36265/56A GB829432A (en) 1956-11-27 1956-11-27 Process for manufacturing pure aromatic substances from industrial hydrocarbon mixtures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB36265/56A GB829432A (en) 1956-11-27 1956-11-27 Process for manufacturing pure aromatic substances from industrial hydrocarbon mixtures

Publications (1)

Publication Number Publication Date
GB829432A true GB829432A (en) 1960-03-02

Family

ID=10386524

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36265/56A Expired GB829432A (en) 1956-11-27 1956-11-27 Process for manufacturing pure aromatic substances from industrial hydrocarbon mixtures

Country Status (1)

Country Link
GB (1) GB829432A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3415743A (en) * 1967-08-30 1968-12-10 Marathon Oil Co Aromatic extraction with a mixture of dimethylformamide and water
US3492365A (en) * 1966-05-27 1970-01-27 Union Carbide Corp Separation of aromatic hydrocarbons from nonaromatic hydrocarbons

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3492365A (en) * 1966-05-27 1970-01-27 Union Carbide Corp Separation of aromatic hydrocarbons from nonaromatic hydrocarbons
US3415743A (en) * 1967-08-30 1968-12-10 Marathon Oil Co Aromatic extraction with a mixture of dimethylformamide and water

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