Abstract:
The present invention relates to an improved process for refining glyceride oil which incorporates a basic ionic liquid treatment. In particular, the basic ionic liquid treatment prevents or reduces the formation of chloropropanol fatty acid esters and glycidyl fatty acid esters during the overall refining process. The present invention also relates to glyceride oil compositions formed therefrom and uses of the basic ionic liquid.
Abstract:
The present invention relates to a process for refining glyceride oil comprising the steps of: (i) contacting glyceride oil with a liquid comprising a basic quaternary ammonium salt to form a treated glyceride oil; wherein the quaternary ammonium salt comprises a basic anion selected from hydroxide, alkoxide, alkylcarbonate, hydrogen carbonate, carbonate, serinate, prolinate, histidinate, threoninate, valinate, asparaginate, taurinate and lysinate; and a quaternary ammonium cation; (ii) separating the treated glyceride oil from a salt comprising the quaternary ammoniumcation; and (iii) subjecting the treated glyceride oil after the separation step to at least one further refining step; and to the use of contacting a glyceride oil with the basic quaternary ammonium salt for preventing or reducing the formation of fatty acid esters of chloropropanols and/or glycidol upon heating of the glyceride oil.
Abstract:
The present invention relates to deacidification of glyceride oils. The present invention provides a process for removing free fatty acids from glyceride oil, preferably palm oil, containing free fatty acids, said process comprising the steps of: (i) contacting the glyceride oil containing free fatty acids with the basic ionic liquid; wherein the basic ionic liquid has a basic anion selected from hydroxide, alkoxide, alkylcarbonate, hydrogen carbonate, serinate, prolinate, histidinate, threoninate, valinate, asparaginate, taurinate and lysinate; and a cation selected from: [N(R a )(R b )(R c )(R d )] + , wherein: R a , R b , R c and R d are each independently selected from hydrogen, a C 1 to C 8 , straight chain or branched alkyl group or a C 3 to C 6 cycloalkyl group, wherein said alkyl or cycloalkyl groups are unsubstituted or may be substituted by one to three groups selected from: C 1 to C 4 alkoxy, C 2 to C 8 alkoxyalkoxy, C 3 to C 6 cycloalkyl, -OH, -SH, - CO 2 (C 1 to C 6 )alkyl, -OC(O)(C 1 to C 6 )alkyl, or any two of R a , R b , R c and R d combine to form an alkylene chain -(CH 2 ) q - wherein q is from 3 to 6; and (ii) obtaining a treated glyceride oil having a reduced content of free fatty acid compared to the glyceride oil feed of step (i).
Abstract:
The present invention relates to a process for the removal of naphthenic acids from crude oils and crude oil distillates by use of supported basic ionic liquids.
Abstract:
Disclosed are heterogeneous processes (i) for the hydrogenation of a compound containing at least one unsaturated carbon-carbon bond, and (ii) for the hydro-dehalogenation of a compound containing at least one C-Cl, C-Br or C-l bond. The processes comprise reacting said compound with a hydrogenating agent and a heterogeneous hydrogenation catalyst in the presence of an ionic liquid.
Abstract:
The present invention relates to a process for the removal of free fatty acids from glyceride oils, especially palm oil. In particular, the present invention is directed to a process wherein specific ionic liquids are utilised for removing free fatty acids contained in glyceride oils,preferably palm oil,such that a glyceride oil, having a reduced content of free fatty acids may be obtained. The invention also relates to treated glyceride oil compositions, preferably treated palm oil compositions, comprising certainionic liquids to prevent build-up of free fatty acids in stored oil.
Abstract:
The present invention is directed to a process for removing metal contaminants from glyceride oil and a refining process incorporating the same. In particular, the present invention is directed to a process wherein certain basic ionic liquids are used for treating glyceride oil. The present invention also relates to uses of the basic ionic liquid and to glyceride oil compositions obtained from the ionic liquid treatment.
Abstract:
The invention relates to a method of inhibiting corrosion by corrosive fluids, and more specifically to inhibiting corrosion of a metallic surface. The method comprising adding to the corrosive fluid a specifically selected ionic liquid which is added in an amount,based on the total weight of the corrosive fluid, effective to mitigate or alleviate corrosion.
Abstract:
The present invention relates to a process for removing metal from metal-containing glyceride oil comprising the steps of: (i) contacting a glyceride oil, comprising chromium, manganese, iron, cobalt, nickel and/or copper in a total amount of from 10 mg/kg to 10,000 mg/kg, with a liquid comprising a basic quaternary ammonium salt to form a treated glyceride oil; wherein the basic quaternary ammonium salt comprises a basic anion selected from hydroxide, alkoxide, alkylcarbonate, hydrogen carbonate, carbonate, serinate, prolinate, histidinate, threoninate, valinate, asparaginate, taurinate and lysinate; and (ii) separating the treated glyceride oil from a salt comprising the quaternary ammonium cation, providing a treated glyceride oil containing a reduced amount of metals.
Abstract:
The present invention relates to a process for the removal of organic acids, particularly naphthenic acids, from crude oils and crude oil distillates by use of a supported basic ionic liquid in a mass ratio of crude oil and/or crude oil distillate and ionic liquid of from greater than 40:1, the basic ionic liquid comprises a basic anion selected from serinate, prolinate, histidinate, threoninate, valinate, asparaginate, taurinate and lysinate.