GB1505722A - Extractive distillation process - Google Patents

Extractive distillation process

Info

Publication number
GB1505722A
GB1505722A GB20909/75A GB2090975A GB1505722A GB 1505722 A GB1505722 A GB 1505722A GB 20909/75 A GB20909/75 A GB 20909/75A GB 2090975 A GB2090975 A GB 2090975A GB 1505722 A GB1505722 A GB 1505722A
Authority
GB
United Kingdom
Prior art keywords
column
separation
separated
extractive distillation
extract
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
GB20909/75A
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.)
Phillips Petroleum Co
Original Assignee
Phillips Petroleum Co
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 Phillips Petroleum Co filed Critical Phillips Petroleum Co
Publication of GB1505722A publication Critical patent/GB1505722A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
    • B01D3/40—Extractive distillation
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Medicines Containing Plant Substances (AREA)

Abstract

1505722 Extractive distillation PHILLIPS PETROLEUM CO 16 May 1975 [30 May 1974] 20909/75 Heading C5E [Also in Division B1] In extractive distillation, a portion of the condensed overhead is returned to an upper portion of the column as reflux, the extract is removed as a vaporous side stream, the recovered selective solvent is recycled to the top of the column and two immiscible liquid phases, one rich in the solvent and the other rich in the compounds to be separated, are maintained in the upper portion of the column. The process can be applied to (a) the separation of butadiene from butanes and/or butenes; (b) the separation of isoprene from pentanes and/or pentenes; (c) the separation of cyclohexane from hexane; (d) the separation of aromatics and/or sulphur compounds from cracked gasolines, and (e) the separation of a C 7-10 thermal or catalytically cracked gasoline into an overhead comprising paraffins, naphthenes and olefins and a bottoms comprising aromatics and n- C 9+ paraffins which can be fractionated to separate a benzene, toluene and xylene fraction and a fraction containing C 9+ aromatics and n-C 9+ paraffins which can be further separated by extractive distillation. The selective solvent can be a sulpholane or a sulpholene which can also contain diethylene glycol, ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, acetone, methanol and/or 0À1-20 wt. per cent water. A C 7-10 gasoline fraction 21 is separated in a column 30 which comprises an upper extractive distillation portion and a lower portion in which the extract 39 is stripped from the solvent 25 which is recycled in part as the stream 32 and in part through a reboiler 48. The overhead 33 is separated at 35 into a water stream 38 and a raffinate which is in part refluxed as the stream 36. The extract 39 is removed as a vapour and, after returning entrained liquid 42 to the column, is separated at 45 into the extract 47 and a water stream 46 which is returned to the column.
GB20909/75A 1974-05-30 1975-05-16 Extractive distillation process Expired GB1505722A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US47449874A 1974-05-30 1974-05-30

Publications (1)

Publication Number Publication Date
GB1505722A true GB1505722A (en) 1978-03-30

Family

ID=23883787

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20909/75A Expired GB1505722A (en) 1974-05-30 1975-05-16 Extractive distillation process

Country Status (9)

Country Link
BE (1) BE829720A (en)
CA (1) CA1053601A (en)
DE (1) DE2523704A1 (en)
ES (1) ES437977A1 (en)
FR (1) FR2275234A1 (en)
GB (1) GB1505722A (en)
IT (1) IT1038564B (en)
NO (1) NO140619C (en)
ZA (1) ZA753433B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474512A1 (en) * 1980-01-28 1981-07-31 Int Synthetic Rubber PROCESS AND PLANT FOR PURIFYING MONOMERS AND SOLVENTS IN A POLYMERIZATION PLANT
GB2163773A (en) * 1984-08-31 1986-03-05 El Paso Products Co Process for recovering tertiary butylstyrene
GB2163772A (en) * 1984-08-31 1986-03-05 El Paso Products Co Process for refining tertiary butylstyrene
GB2178445A (en) * 1985-08-05 1987-02-11 Linde Ag Fractionation of hydrocarbon mixtures
EP1294826A1 (en) * 2000-02-11 2003-03-26 GTC Technology Corporation Process of removing sulfur compounds from gasoline
US8722952B2 (en) 2012-08-09 2014-05-13 Council Of Scientific & Industrial Research Process for production of benzene lean gasoline by recovery of high purity benzene from unprocessed cracked gasoline fraction containing organic peroxides

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2043551B1 (en) * 1992-05-18 1994-07-01 Consejo Superior Investigacion DEVICE FOR THE SEPARATION AND CONCENTRATION OF VOLATILE COMPONENTS OF THERMOSENSITIVE SAMPLES BY DISTILLATION AND SIMULTANEOUS EXTRACTION THROUGH ORGANIC SOLVENTS.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL64177C (en) * 1943-02-08

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2474512A1 (en) * 1980-01-28 1981-07-31 Int Synthetic Rubber PROCESS AND PLANT FOR PURIFYING MONOMERS AND SOLVENTS IN A POLYMERIZATION PLANT
GB2163773A (en) * 1984-08-31 1986-03-05 El Paso Products Co Process for recovering tertiary butylstyrene
GB2163772A (en) * 1984-08-31 1986-03-05 El Paso Products Co Process for refining tertiary butylstyrene
GB2178445A (en) * 1985-08-05 1987-02-11 Linde Ag Fractionation of hydrocarbon mixtures
GB2178445B (en) * 1985-08-05 1989-08-16 Linde Ag Fractionation of hydrocarbon mixtures
EP1294826A1 (en) * 2000-02-11 2003-03-26 GTC Technology Corporation Process of removing sulfur compounds from gasoline
EP1294826A4 (en) * 2000-02-11 2003-05-14 Gtc Technology Corp Process of removing sulfur compounds from gasoline
US8722952B2 (en) 2012-08-09 2014-05-13 Council Of Scientific & Industrial Research Process for production of benzene lean gasoline by recovery of high purity benzene from unprocessed cracked gasoline fraction containing organic peroxides

Also Published As

Publication number Publication date
DE2523704A1 (en) 1975-12-04
CA1053601A (en) 1979-05-01
ES437977A1 (en) 1977-01-16
IT1038564B (en) 1979-11-30
NO751906L (en) 1975-12-02
FR2275234B1 (en) 1980-05-23
BE829720A (en) 1975-12-01
ZA753433B (en) 1976-04-28
FR2275234A1 (en) 1976-01-16
NO140619B (en) 1979-07-02
NO140619C (en) 1979-10-10

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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