GB1077535A - Improvements in or relating to the separation of gas, lipid alcohol or hydrocarbon - Google Patents

Improvements in or relating to the separation of gas, lipid alcohol or hydrocarbon

Info

Publication number
GB1077535A
GB1077535A GB31649/64A GB3164964A GB1077535A GB 1077535 A GB1077535 A GB 1077535A GB 31649/64 A GB31649/64 A GB 31649/64A GB 3164964 A GB3164964 A GB 3164964A GB 1077535 A GB1077535 A GB 1077535A
Authority
GB
United Kingdom
Prior art keywords
additive
polyvinyl
membrane
film
permeable
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
GB31649/64A
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.)
ILE DES PRODUITS LIFINE SOC CI
Original Assignee
ILE DES PRODUITS LIFINE SOC CI
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 ILE DES PRODUITS LIFINE SOC CI filed Critical ILE DES PRODUITS LIFINE SOC CI
Publication of GB1077535A publication Critical patent/GB1077535A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
    • B01D37/025—Precoating the filter medium; Addition of filter aids to the liquid being filtered additives incorporated in the filter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/14—Dynamic membranes
    • B01D69/141—Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix 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

Abstract

A gas, a lipid, an alcohol or a hydrocarbon is separated from a medium containing it by osmosis through a membrane which is impermeable to the medium but permeable to said substance contained in the medium, the membrane being of a material impermeable to said substance and having incorporated therein, in the form of discrete particles, an additive permeable to said substance, but not soluble therein, and preferably which swells or gels in its presence. The membrane may contain 2-25% of additive and may contain a plurality of additives of different particle form or dimensions. The membrane may also contain a wetting agent for the additive which is soluble in the substance to be separated and/or miscible with it. The membrane may be in the form of a sheet, slab, sheath, bag or tube and may be formed by e.g. extrusion, injection moulding, calendering or centrifuging. The membrane may also be formed from a mixture containing a film-forming material that is initially permeable to the osmosable substance and can be rendered impermeable thereto by subsequent treatment. The permeable particles of additive are distributed randomly, without pore formation, throughout the impermeable film-forming substance forming the membrane. A specific material may, depending on what is being separated, act both as a film-former and as additive. In Examples membranes permeable to one or more of oxygen, hydrogen, nitrogen and carbon dioxide comprise (1) polyvinylidene chloride (film-former) and polyethylene (additive); (2) polyvinyl alcohol (film-former) and methyl cellulose (additive); (3) polyvinyl butyral (film-former) and cellulose acetate (additive); (5) polyamide (film-former) and hydroxyethyl cellulose (additive). membranes permeable to lipids comprise (film-former given first) (6) polyvinyl chloride and smectic clay; (7) polyvinyl alcohol and polyethylene; (8) polyamide and ethyl hydroxyethyl cellulose; (9) polyvinyl acetal and ethyl cellulose. Membranes permeable to alcohols comprise (11) polyvinyl chloride and ethyl and methyl cellulose (additives); (12) polyvinyl alcohol and ethyl cellulose; (13) chloroprene rubber and smectic clay. Membranes permeable to hydrocarbons comprise (14) polyvinyl alcohol and smectic clay; (15) polyvinylidene chloride and chloroprene rubber; (16) polyvinyl butyral and dammar gum; (17) polyvinyl acetate and smectic clay; (18) polyvinyl aceto-chloride and smectic clay; (19) polyvinyl carbazole and ethyl hydroxyethyl cellulose. Plasticizers and wetting agents such as triacetin octyl adipate, tricresyl phosphate, butyl phthalate, sorbitol and glycerin may be incorporated into the membrane compositions.
GB31649/64A 1963-07-18 1964-07-15 Improvements in or relating to the separation of gas, lipid alcohol or hydrocarbon Expired GB1077535A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR3071A FR1378064A (en) 1963-07-18 1963-07-18 Selective osmotic permeability membrane

Publications (1)

Publication Number Publication Date
GB1077535A true GB1077535A (en) 1967-08-02

Family

ID=8569066

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31649/64A Expired GB1077535A (en) 1963-07-18 1964-07-15 Improvements in or relating to the separation of gas, lipid alcohol or hydrocarbon

Country Status (3)

Country Link
BE (1) BE650223A (en)
FR (1) FR1378064A (en)
GB (1) GB1077535A (en)

Also Published As

Publication number Publication date
DE1717173B2 (en) 1973-01-04
DE1717173A1 (en) 1971-04-29
BE650223A (en) 1964-11-03
FR1378064A (en) 1964-11-13

Similar Documents

Publication Publication Date Title
ES340033A1 (en) Reverse osmosis membrane and method of manufacture
GB1440598A (en) Process for separating unsaturated hydrocarbons
AT309819B (en) Process for the preparation of stable, aqueous copolymer dispersions from vinyl esters and ethylene
FI813215L (en) FOERFARANDE FOER FOERAENDRING AV VATTENHALTEN AV VATTENUPPTAGANDE ELLER VATTENAVGIVANDE MATERIAL
GB1258543A (en)
GB1260208A (en) Swellable polymers
GB1503270A (en) Separation membranes
DE1184951B (en) Process for the production of foams
GB1077535A (en) Improvements in or relating to the separation of gas, lipid alcohol or hydrocarbon
ES389802A1 (en) Casting tubular reverse osmosis membranes in place
ES336141A1 (en) Procedure for the production of films based on polyvinyl alcohol. (Machine-translation by Google Translate, not legally binding)
FR2253615A1 (en)
GB984216A (en) Ink receptive coated plastic films and methods of making same
GB541597A (en) Improvements relating to plasticized polyvinyl choride products
GB1319862A (en) Tobacco-smoke filters
GB1264670A (en)
GB1075071A (en) Regenerated cellulosic compositions
GB1007981A (en) Improvements in or relating to the preservation of documents for storage
US2167909A (en) Manufacture of materials having an organic basis
GB1119303A (en) Reverse osmosis and membrane manufacture
FR2187516A1 (en) Microporous membranes by leaching a polymer film - contains PVC, a sulphobetaine and a trialkyl or aryl phosphate
CA1107659A (en) Water removal from hydrocarbons by dialysis through cellulose ester membrane
GB1081361A (en) Separation of gases
ES364742A1 (en) Smoking product having microreticulated filter
GB1276340A (en) Tobacco smoke filter