GB1238474A - - Google Patents

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Publication number
GB1238474A
GB1238474A GB1238474DA GB1238474A GB 1238474 A GB1238474 A GB 1238474A GB 1238474D A GB1238474D A GB 1238474DA GB 1238474 A GB1238474 A GB 1238474A
Authority
GB
United Kingdom
Prior art keywords
extract
aromatic
aromatic hydrocarbons
xylenes
nov
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
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 filed Critical
Publication of GB1238474A publication Critical patent/GB1238474A/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
    • C07C7/10—Purification; Separation; Use of additives by extraction, i.e. purification or separation of liquid hydrocarbons with the aid of liquids

Landscapes

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

Abstract

1,238,474. Extracting aromatic hydrocarbons. JAPAN GAS-CHEMICAL CO. Inc. 20 Nov., 1968 [21 Nov., 1967], No. 54956/68. Heading C5E. Aromatic hydrocarbons are separated from mixtures with other aromatic hydrocarbons by countercurrent extraction with HF/BF 3 in the presence of a diluent under conditions such that (1) the BF 3 /HF mole ratio of the withdrawn HF extract is 0À02-0À20, (2) the concentration γ of aromatic hydrocarbons in the hydrocarbon phase at the HF extract withdrawal section of the extractor has a value below 0À3, (3) γ and the mole ratio # m of the total hydrocarbon/BF 3 extract in the HF extract substantially satisfy a curve similar to the γ-# equilibrium diagrams provided, and (4) the reflux ratio of extract product is 0-0À2. A variety of diluents may be employed. The process is application to the separation of (a) m-xylene from a C 8 aromatic mixture, (b) mesitylene from a C 8 -C 9 aromatic mixture, and (c) an aromatic hydrocarbon boiling above the xylenes from an admixture thereof with xylenes; and is stated to be an improvement on Specification 1,144,067.
GB1238474D 1967-11-21 1968-11-20 Expired GB1238474A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7489667 1967-11-21

Publications (1)

Publication Number Publication Date
GB1238474A true GB1238474A (en) 1971-07-07

Family

ID=13560593

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1238474D Expired GB1238474A (en) 1967-11-21 1968-11-20

Country Status (7)

Country Link
US (1) US3579599A (en)
BE (1) BE724148A (en)
DE (1) DE1810029A1 (en)
FR (1) FR1604275A (en)
GB (1) GB1238474A (en)
NL (1) NL163202C (en)
SU (1) SU416934A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040088785A1 (en) * 2002-10-23 2004-05-13 Walker Victor Lee Curvilinear spa
US10023496B1 (en) 2017-06-16 2018-07-17 United States Gypsum Company No fiber calcination of gypsum for gypsum fiberboard

Also Published As

Publication number Publication date
US3579599A (en) 1971-05-18
FR1604275A (en) 1971-10-11
BE724148A (en) 1969-05-02
NL163202C (en) 1980-08-15
SU416934A3 (en) 1974-02-25
DE1810029A1 (en) 1969-06-19
NL6816604A (en) 1969-05-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee