摘要:
A process for the production and purification of fatty acid esters of lower alkyl alcohols with improved filtration characteristics comprising the steps of: a) transesterifying a mixture of fatty acid esters of glycerol with a lower alkyl alcohol while using an alkaline catalyst; b) separating the reaction mixture resulting from step (a) into a glycerol phase and a fatty acid lower alkyl ester phase; c) inactivating the catalytic intermediates present in said fatty acid lower alkyl ester phase; d) removing the lower alkyl alcohol from the mixture resulting from step (c) by evaporation at reduced pressure to a value of less than 2% by weight; e) treating the evaporation residue resulting from step (d) with water; and f) isolating the fatty acid esters of lower alcohols by drying the product resulting from step (e); and biodiesel containing FAME produced according to this process.
摘要:
This invention provides a process for forming fatty acid esters of C1-4 alkyl alcohols by alkaline transesterification of a glyceride oil, comprising the steps of: (a) providing a glyceride oil with a free fatty acid content below 2% more preferably below 0.5 weight % expressed as oleic acid; (b) mixing said glyceride oil with at least a part of one or more alcoholic phases originating from the alkaline transesterification as referred to above; (c) separating the mixture thus formed into a heavy, alcoholic phase and a light, pre-treated fatty phase; and (d) transesterifying said pre-treated fatty phase with said C1-4 alkyl alcohols. The transesterified product can be used in biodiesel production.
摘要:
The invention relates to the utilisation of fatty materials with substantial free fatty acid content in the production of biodiesel by the use of microbial enzymes that are effective in a solvent-free process for the production of esters of fatty acids and C1-C3 alkyl alcohols.
摘要:
The invention provides a process and an apparatus for scrubbing vapours generated during the vacuum stripping step of fatty glycerides, said process comprising bringing said vapours in contact with their liquid condensate and extracting said liquid condensate with a polar extraction solvent or solvent mixture.
摘要:
The invention provides a process for recuperating a triglyceride oil from wet gums from a vegetable oil, said process comprising the steps of: (a) providing wet gums by water de-gumming a crude vegetable oil, (b) mixing said wet gums with water containing a phospholipidolytic agent, (c) allowing the mixture to separate into two or more phases, said two or more phases including at least an oily phase and an aqueous phase, and (d) recuperating said oily phase.
摘要:
The invention relates to the utilization of fatty materials with substantial free fatty acid content in the production of biodiesel by the use of microbial enzymes that are effective in a solvent-free process for the production of esters of fatty acids and C1-C3 alkyl alcohols.
摘要:
The invention provides a process and an apparatus for scrubbing vapours generated during the vacuum stripping step of fatty glycerides, said process comprising bringing said vapours in contact with their liquid condensate and extracting said liquid condensate with a polar extraction solvent or solvent mixture.
摘要:
A process for the recuperation of acylglycerols or acylglycerols containing free fatty acids from gums, present as aqueous emulsions, said gums being obtained by subjecting triglyceride oil to one or more degumming processes, said recuperation process comprising the steps of: subjecting said gums to enzymatic hydrolysis catalyzed by one or more enzymes with phospholipase activity; allowing said gums to separate into two or more phases, said two or more phases including at least an oily phase and an aqueous phase; and recuperating said oily phase comprising acylglycerols or acylglycerols containing free fatty acids; wherein said enzymatic hydrolysis is accelerated by adding at least part of the one or more enzymes with phospholipase activity to at least part of the water used in the recuperation and/or at least one degumming process; and/or at least part of said triglyceride oils treated in said degumming process; and/or by facilitating mixing at least part of said one or more enzymes with phospholipase activity into said gums by increasing the triglyceride oil content of said gums; and an oil obtained by this process.
摘要:
A process for the recuperation of acylglycerols or acylglycerols containing free fatty acids from gums, present as aqueous emulsions, said gums being obtained by subjecting triglyceride oil to one or more degumming processes, said recuperation process comprising the steps of: subjecting said gums to enzymatic hydrolysis catalysed by one or more enzymes with phospholipase activity; allowing said gums to separate into two or more phases, said two or more phases including at least an oily phase and an aqueous phase; and recuperating said oily phase comprising acylglycerols or acylglycerols containing free fatty acids; wherein said enzymatic hydrolysis is accelerated by adding at least part of the one or more enzymes with phospholipase activity to at least part of the water used in the recuperation and/or at least one degumming process; and/or at least part of said triglyceride oils treated in said degumming process; and/or by facilitating mixing at least part of said one or more enzymes with phospholipase activity into said gums by increasing the triglyceride oil content of said gums; and an oil obtained by this process.
摘要:
The invention provides a process for recuperating a triglyceride oil from wet gums from a vegetable oil, said process comprising the steps of: (a) providing wet gums by water de-gumming a crude vegetable oil, (b) mixing said wet gums with water containing a phospholipidolytic agent, (c) allowing the mixture to separate into two or more phases, said two or more phases including at least an oily phase and an aqueous phase, and (d) recuperating said oily phase.