134results about "Fatty acid isomerisation" patented technology

Processes for producing hydrocarbons in the gasoline and jet fuel range. The processes involve the thermal decarboxylation of fatty acids, which can be derived from the hydrolysis of triglycerides, which triglycerides can be vegetable oils, animal fats, or combinations thereof. The resulting hydrocarbons can be hydrocracked, and, optionally, isomerized and / or hydrotreated, to yield hydrocarbons in the jet fuel or gasoline range. Where the resulting hydrocarbons include olefinic double bonds, they can alternatively be combined with low molecular weight olefins, and subjected to olefin metathesis to yield hydrocarbons in the jet fuel or gasoline range.

The present invention relates to a process for branching fatty acids or alkyl esters thereof and the use of such branched fatty acid alkyl esters as a major component of biodiesel.

The present invention is directed to methods (processes) and systems for processing triglyceride-containing, biologically-derived oils to provide for base oils and transportation fuels, wherein partial oligomerization of fatty acids contained therein provide for an oligomerized mixture from which the base oils and transportation fuels can be extracted. Such methods and systems can involve an initial hydrotreating step or a direct isomerization of the oligomerized mixture.

The invention relates to a preparation method of conjugated linoleic acid, comprising the following steps: placing the vegetable oil containing linoleic acid glyceride or mixed fatty acid containing linoleic acid or extracted and separated linoleic acid product as raw material, low boiling point alcohols solvent and base catalyst into a reaction kettle and performing the isomerization reaction at a certain temperature. The reaction product is subjected to evaporating, acidifying, extracting and vacuum drying to obtain the conjugated linoleic acid. The conversion of the linoleic acid is above 97.5% and the total yield of the conjugated linoleic acid is above 85%, the proportions of the cis-9, trans-11 isomer and trans-10, cis-12 isomer in the total conjugated linoleic acid are above 96%. The preparation method has features of less reaction steps, easy recovery and repeated use of solvent, simple follow-up separation, low production cost, and easy industrialization.

PCT No. PCT / GB96 / 01278 Sec. 371 Date May 12, 1999 Sec. 102(e) Date May 12, 1999 PCT Filed May 30, 1996 PCT Pub. No. WO96 / 38437 PCT Pub. Date Dec. 5, 1996A process for the preparation of lipolic acid (thioctic acid), or a derivative thereof, is one in which a 2-substituted cyclohexanone is transformed in an oxidation reaction to a lactone having formula (I), wherein X is a heteroatom substituent.

The present invention is directed to methods (processes) and systems for processing triglyceride-containing, biologically-derived oils to provide for base oils and transportation fuels, wherein partial oligomerization of fatty acids contained therein provide for an oligomerized mixture from which the base oils and transportation fuels can be extracted. Such methods and systems can involve an initial hydrotreating step or a direct isomerization of the oligomerized mixture.

The invention relates to a method for producing branched biodiesel, which belongs to the technical field of new energy production. The method is characterized in that the method adopts two steps of reaction to convert biodiesel into branched biodiesel. In the epoxidation process, biodiesel is mixed with formic acid, stirred and heated, the mixture of catalyst and hydrogen peroxide is dripped, reacted mixture is transferred into a separating funnel after reaction is finished, the upper layer of liquid is taken and washed by water until becoming neutral, and thereby epoxidized biodiesel is obtained; in the ring-opening reaction, the epoxidized biodiesel is mixed with fatty alcohol, added with catalyst and stirred for reaction, 5 percent of Na2CO3 is added, mixture is washed and then poured into the separating funnel, so that an ester layer is separated out, and after low-boiling point components are evaporated, the branched biodiesel is obtained. The invention improves the oxidative stability and low-temperature fluidity of biodiesel at the same time, has the advantages of low requirement on processing equipment, simple operation, mild reaction condition and the like, and is suitable for industrialized mass production.

This invention has disclosed a method for preparation of food-grade zeaxanthin through chemical isomerizaton reaction from lutein. The technical issues to be solved in this invention are quite low product yield obtained with existing methods, need of purification treatment process, and inadaptability to industrialized production. The technical schemes of this invention are: a. Mix xanthophyll crystal or its fatty acid ester with food-grade glycol or propylene glycol, for full dissolution under 60-90° C. temperature. Add organic alkali into the mixed liquor acquired from step 1, for isomerization reaction to take place under inertial environment. c. Dilute the reaction solution gained from step b with the mixed solution of deionized water and ethanol, and separate the obtained crystal with conventional separating method. d. Vacuum dries the acquired crystal from step c, to get the zeaxanthin crystal. Glycol or propylene glycol is used in this invention for isomerization reaction under inertial environment after it has fully dissolved raw material under proper temperature. The product yield is reachable to more than 60%, very adaptable to industrialized product, without the need for further purification treatment.

The invention discloses preparation and application of polyunsaturated fatty acid containing rich conjugated linoleic acid and belongs to the technical field of polyunsaturated fatty acid extraction and steady-state treatment of grease. A preparation method comprises the following steps: (1) preparing mixed fatty acid by utilizing an enzymolysis method; (2) enriching the polyunsaturated fatty acid by utilizing a urea-inclusion method; (3) enriching the conjugated linoleic acid by combining a super-critical CO2 extraction method and an alkali isomerization method to finally obtain the polyunsaturated fatty acid containing the rich conjugated linoleic acid, wherein the content of the conjugated linoleic acid reaches 90 percent or more and a product contains other polyunsaturated fatty acid at the same time so that the structure of the product is more reasonable. By adopting a method for preparing microcapsules or emulsion, the polyunsaturated fatty acid containing the rich conjugated linoleic acid is subjected to stabilization treatment, so that the storage stability of the product is improved and the storage period can reach 24 months; meanwhile, the bioavailability of the polyunsaturated fatty acid is improved and the polyunsaturated fatty acid is more easily digested and absorbed by human bodies.

This invention relates to a new conjugated linoleic acids, a process for preparation thereof and method of use. Thus this invention is concerned with the preparation and purification of conjugated linoleic acids from materials rich in alpha or gamma linoleic acids. The reaction produces a mixture containing a 1:1 ratio of 9Z, 11E, 15Z-octadecatrienoic acid and 9Z, 13E, 15Z-octadecatrieonic acid. The mixture can be purified up to 90% by liquid chromatography, crystallization or urea crystallization. The mixture of 1:1 9Z, 11E, 15Z-octadecatrienoic acid and 9Z, 13E, 15E, 15Z-octadecatrienoic acid have anticancerous activities.

A method for producing liquid fuel components from renewable oil. A fresh feedstock including saturated fatty acids is subjected to dilution by an organic lipophilic solvent. The solvent has a low phosphorus and metal impurity content, less than 5 ppm and less than 10 ppm, respectively. Dilution is performed before and / or during purification by at least one pretreatment process for removal of phosphorus and metal impurities. Subsequently, the resulting purified feedstock is fed into at least one post-treatment process suitable for producing liquid fuel components.

The invention belongs to the technical field of preparation of aviation kerosene, and particularly relates to a preparation method of a hydrodeoxidation isocatalyst, a hydrodeoxidation isocatalyst and application thereof. Carbon nanotubes are modified by nickel phthalocyanine so as to introduce Ni and N elements into the carbon nanotubes, iron phthalocyanine is added to cooperate with the nickel phthalocyanine, and the modified carbon nanotubes are added into a SAPO-11 synthetic gel in the form of a gel component, so that the synthesized SAPO-11 has more abundant pores and higher acid strength; and by introducing the Ni, Fe and N, the synthesized molecular sieve has the hydrodeoxidation activity, so that the synthesized NiFeCNTSAPO-11 can be directly used as a biological aviation kerosene catalyst for hydrogenating vegetable oil, thereby omitting the step of impregnating active components into the support and simplifying the preparation procedure. Besides, the hydrodeoxidation isocatalyst has high catalytic efficiency and high biological aviation kerosene yield (up to 78-85%).

Methods for sequential saponification and quantitative isomerization of glyceride oils containing interrupted double bond systems, with alkali in a polyether alcohol solvent to yield soaps with conjugated double bond systems are disclosed. The novel properties f the polyether alcohols allow the removal of water added with the alkali by boiling. The preferred embodiment uses a vegetable oil rich in linoleic acid such as sunflower or safflower oil, potassium hydroxide, phosph ric acid to neutralize the soaps. The reaction forms equal quantities of 9Z,11E-octadecadienoic acid and 10E,12Z-octadecadienoic acids.