GB1094514A - Semi-permeable membrane extraction - Google Patents

Semi-permeable membrane extraction

Info

Publication number
GB1094514A
GB1094514A GB254166A GB254166A GB1094514A GB 1094514 A GB1094514 A GB 1094514A GB 254166 A GB254166 A GB 254166A GB 254166 A GB254166 A GB 254166A GB 1094514 A GB1094514 A GB 1094514A
Authority
GB
United Kingdom
Prior art keywords
removal
solvent
barrier
extractant
mixture
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
GB254166A
Inventor
Robert Paul Cahn
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
Esso Research and Engineering 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
Priority to US79270A priority Critical patent/US3244763A/en
Application filed by Exxon Research and Engineering Co, Esso Research and Engineering Co filed Critical Exxon Research and Engineering Co
Priority to GB254166A priority patent/GB1094514A/en
Priority to FR47853A priority patent/FR1473249A/en
Publication of GB1094514A publication Critical patent/GB1094514A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/04—Solvent extraction of solutions which are liquid
    • B01D11/0415—Solvent extraction of solutions which are liquid in combination with membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/38—Liquid-membrane separation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/144—Purification; Separation; Use of additives using membranes, e.g. selective permeation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Extraction Or Liquid Replacement (AREA)

Abstract

A porous barrier soaked in a selective solvent for the desired component is used in the removal of such a component from a fluid mixture with which the solvent is immiscible as a whole, by diffusion to a re-extractant fluid which is likewise immiscible with the solvent but capable of extracting the desired component therefrom. Particular processes described and claimed are the removal of isobutylene from a mixture of C4 alkanes and alkenes using 60-65% sulphuric acid in the barrier and hexane as the reextractant, and the removal of methylbutenes from a C5 hydrocarbon mixture with the same selective solvent and with a C6-C9 paraffin as the re-extractant. Also referred to are the removal of mercaptans from a hydrocarbon stream using caustic alkali, the removal of alkynes or butadiene using Cu or Ag salts, the removal of aromatics from mixtures with paraffins with diethylene glycol, olefins with benzene sulphonic acids, and the removal of CO2 or H2S from a gas stream with mono- or di-ethanolamine and air for re-extraction. Diffusion cells according to the invention may have multiple barriers operated in parallel. Pressures are normally substantially equal on both sides of the barrier, but if not barriers may be strengthened by metal supports 31 (Fig. 5, not shown). The porous material may be paper, asbestos, a natural or synthetic fabric, felt, glass, mineral wool, a natural or synthetic sponge or a sintered plastic, ceramic or metal.ALSO:A porous barrier soaked in a selective solvent for the desired component is used in the removal of such a component from a fluid mixture with which the solvent is immiscible as a whole, by diffusion to a re-extractant fluid which is likewise immiscible with the solvent but capable of extracting the desired component therefrom. Particular processes described and claimed are the removal of isobutylene from a mixture of C4 alkanes and alkenes using 60-65% sulphuric acid in the barrier and hexane as the re-extractant, and the removal of methylbutenes from a C5 hydrocarbon mixture with the same selective solvent and with a C6-C9 paraffin as the re-extractant. Also referred to are the removal of mercaptans from a hydrocarbon stream using caustic alkali, the removal of alkynes or butadiene using Cu or Ag salts, the removal of aromatics from mixtures with paraffins with diethylene glycol, olefins with benzene sulphonic acids, and the removal of CO2 or H2S from a gas stream with mono- or di-ethanolamine and air for re-extraction. Diffusion cells according to the invention may have multiple barriers operated in parallel. Pressures are normally substantially equal on both sides of the barrier, but if not barriers may be strengthened by metal supports 31 (Fig. 5, not shown). The porous material may be paper, asbestos a natural or synthetic fabric, felt, glass, mineral wool, a natural or synthetic sponge or a sintered plastic, ceramic or metal.
GB254166A 1960-12-29 1966-01-19 Semi-permeable membrane extraction Expired GB1094514A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US79270A US3244763A (en) 1960-12-29 1960-12-29 Semi-permeable membrane extraction
GB254166A GB1094514A (en) 1966-01-19 1966-01-19 Semi-permeable membrane extraction
FR47853A FR1473249A (en) 1966-01-19 1966-01-31 Extraction process using a semi-permeable membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB254166A GB1094514A (en) 1966-01-19 1966-01-19 Semi-permeable membrane extraction

Publications (1)

Publication Number Publication Date
GB1094514A true GB1094514A (en) 1967-12-13

Family

ID=9741397

Family Applications (1)

Application Number Title Priority Date Filing Date
GB254166A Expired GB1094514A (en) 1960-12-29 1966-01-19 Semi-permeable membrane extraction

Country Status (1)

Country Link
GB (1) GB1094514A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111603799A (en) * 2020-04-26 2020-09-01 中国科学院青岛生物能源与过程研究所 Method for reducing membrane resistance in membrane extraction process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111603799A (en) * 2020-04-26 2020-09-01 中国科学院青岛生物能源与过程研究所 Method for reducing membrane resistance in membrane extraction process
CN111603799B (en) * 2020-04-26 2021-12-21 中国科学院青岛生物能源与过程研究所 Method for reducing membrane resistance in membrane extraction process

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