EP3152283A1 - Procédé et dispositif de traitement par étapes d'une huile organique - Google Patents

Procédé et dispositif de traitement par étapes d'une huile organique

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Publication number
EP3152283A1
EP3152283A1 EP15727638.7A EP15727638A EP3152283A1 EP 3152283 A1 EP3152283 A1 EP 3152283A1 EP 15727638 A EP15727638 A EP 15727638A EP 3152283 A1 EP3152283 A1 EP 3152283A1
Authority
EP
European Patent Office
Prior art keywords
oil
acid
phase
oil phase
fatty acids
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.)
Granted
Application number
EP15727638.7A
Other languages
German (de)
English (en)
Other versions
EP3152283B1 (fr
Inventor
Steffen Hruschka
Wladislawa Boszulak
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.)
GEA Westfalia Separator Group GmbH
Original Assignee
GEA Westfalia Separator Group GmbH
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Filing date
Publication date
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Priority to PL15727638T priority Critical patent/PL3152283T3/pl
Publication of EP3152283A1 publication Critical patent/EP3152283A1/fr
Application granted granted Critical
Publication of EP3152283B1 publication Critical patent/EP3152283B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B3/00—Refining fats or fatty oils
    • C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B3/00—Refining fats or fatty oils
    • C11B3/006—Refining fats or fatty oils by extraction
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B3/00—Refining fats or fatty oils
    • C11B3/02—Refining fats or fatty oils by chemical reaction
    • C11B3/04—Refining fats or fatty oils by chemical reaction with acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B3/00—Refining fats or fatty oils
    • C11B3/02—Refining fats or fatty oils by chemical reaction
    • C11B3/06—Refining fats or fatty oils by chemical reaction with bases
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B3/00—Refining fats or fatty oils
    • C11B3/10—Refining fats or fatty oils by adsorption

Definitions

  • the present invention relates to a method and a device for
  • oils are usually subjected to so-called degumming (degumming) in order to convert hydratable compounds into a water phase, whereby the dissolved or aggregated compounds can be separated off by phase separation processes.
  • degumming degumming
  • Fatty acids dissolved or undissolved alkaline earth salts may be included as impurities in the fraction of the free fatty acids.
  • a process according to the invention relates to the stepwise workup of an oil.
  • This step-by-step work-up can preferably be carried out in an established manner
  • Refining process for the production of a cooking oil or a fuel for internal combustion engines are integrated as a step sequence.
  • the step-by-step process includes the following steps: A Provision of a crude oil
  • the crude oil can be obtained, for example, from plants by pressing or
  • Dismantling is in itself a well-known process step. A distinction is made between water degumming and the less frequently used acid degumming. The latter is preferred in the process according to the invention.
  • the acid addition may be the addition of a dilute acid or, more preferably, the addition of a concentrated acid in conjunction with a subsequent addition of water.
  • Mainly hydratable mucilages e.g. hydratable phosphoglycerides, such as phosphatidylinositols and phosphatidylcholines, separated from the oil phase and transferred to the aqueous phase. These are centrifugally separable.
  • Alkaline earth compounds and / or iron compounds e.g. Chlorophyll, other magnesium complexes or calcium complexes or iron complexes result.
  • iron ions or iron compounds results in a lower oxidation susceptibility of the oil phase.
  • Some of the alkaline earth compounds may be present as phospholipids. It is particularly noteworthy that the addition of sodium hydrogen carbonate also results in a separation of non-hydratable phospholipids, preferably non-hydratable ones
  • Phosphoglycerides e.g. Phosphatidylethanolamines and even from
  • Phosphatidic acid and its salts in particular their alkali and alkaline earth salts, he follows. This is surprising in that the phosphatidic acid and
  • Phosphatid salts which are usually dissolved in an oil fraction, are very difficult to separate from the oil phase. That this can now even be done in such a way that the free fatty acids remain predominantly in the oil phase and are separable as a separate fraction.
  • the separation can preferably be carried out by phase separation of an aqueous phase and an oil phase in a centrifugal field.
  • step C an organic oil is obtained which, compared with the degummed oil fraction in step B, has a lower proportion of one or more
  • Olbegleitstoffen (Sterylglycosiden, alkaline earth compounds and / or phospholipids) which are usually difficult to be separated from the free fatty acids derived from an organic oil.
  • the content of free fatty acid compared to the oil fraction from step B is surprisingly virtually unchanged after step C.
  • the free fatty acids can now advantageously be obtained separately from the steryl glycosides and, if required, also separated from the phospholipids and / or other alkaline earth compounds by saponification. This takes place in a further optional step
  • step D adding an alkaline agent to the oil fraction in step C and separating the saponified fatty acids from the aforementioned oil phase.
  • the separation can preferably be carried out as in step C by phase separation of an aqueous phase and an oil phase in the centrifugal field.
  • a further refining of the oil phase can also take place in step C or D. This is done through the optional step E bleaching and / or deodorizing the oil phase.
  • the bleaching process can be carried out much more effectively.
  • the bleaching can be done very effectively, for example, by bleaching earth.
  • Deodorizing can also be done effectively. As is known, deodorizing can be carried out by machine e.g. by steam distillation in a so-called deodorizer.
  • an acid which is selected from one or more of the following acids: citric acid, acetic acid, formic acid, oxalic acid, hydrochloric acid, sulfuric acid, nitric acid and / or phosphoric acid. Particularly suitable for the separation of citric acid, acetic acid, formic acid, oxalic acid, hydrochloric acid, sulfuric acid, nitric acid and / or phosphoric acid. Particularly suitable for the separation of
  • Mucides have been found by the aforementioned acids, the organic acids.
  • step C The addition of sodium bicarbonate after step C can be repeated until the turbidity of the water phase and / or a determined content of
  • Alkaline earth ions of the oil phase and / or a determined phosphorus content of the oil phase falls below a predetermined target value. Especially by the addition of a powder or suspension and comparatively little water, no extensive water phase to be worked up. This allows step C several times
  • step C After the addition of sodium bicarbonate in step C, it is preferable to separate an aqueous phase containing an amount of free fatty acids corresponding to a separation of less than 1% points of free fatty acids from the oil phase.
  • the indication of percentage points refers to a decrease in the total amount of free fatty acids in the oil phase. It has been found that with sodium hydrogen addition, regardless of the total amount of free fatty acids in the oil is possible, always less than 1 percentage point in the
  • Water phase for example, while phospholipids, chlorophyll or other alkaline earth compounds are converted in large proportions in the aqueous phase.
  • Sodium bicarbonate in step C an aqueous phase are separated off, which contains a proportion of free fatty acids corresponding to a separation of less than 0.2% points of free fatty acids from the oil phase.
  • step C can preferably achieve the separation of an aqueous phase in which dissolved or suspended organic constituents are present which contain more than 30% by weight, preferably more than 50% by weight, of steryl glycosides.
  • step C saponification of free fatty acids with the addition of an alkaline agent to the oil phase of step C may be carried out whereby separation of these saponified fatty acids from the oil phase may occur.
  • the saponified fatty acids can pass as a relatively pure fraction from the oil phase in a water phase, which by
  • the saponified fatty acid may preferably have less than 3% by weight, preferably less than 1% by weight, of organic soils. These soaps can then be split again under pressure or with addition of acid to free fatty acids. This reaction is commonly known as soap cleavage. Due to the relatively high purity of the soap fraction, only a less contaminated water phase is involved in the soap cleavage. contaminated
  • step C or D bleaching and / or deodorizing of the oil phase from step C or D may occur. This will remove unwanted colorants and remove unwanted odors and flavors from the oil phase. These are usually final steps in refining an oil to produce edible oils or fuels.
  • the added alkaline agent in step D may preferably be an inorganic alkali liquor, preferably a sodium hydroxide solution.
  • the addition of this comparatively inexpensive agent is sufficient after the separation of
  • a device which is designed to carry out a method according to claim 1.
  • Fig. 1 shows the HLB lipophilicity scale, wherein in the range of 10 to 0 the
  • Lipophilicity increases and in the range of 10 to 20 the hydrophilicity increases and by 10 the substances are both lipophilic and hydrophilic, i. they are equi-amphiphilic.
  • the value is given according to the HLB lipophilicity scale;
  • Fig. 2 shows an apparatus according to the invention for carrying out the herein
  • 1 means a receptacle for receiving the aqueous phase containing the mentioned salts
  • 2 stands for a power
  • 3 for a container
  • 4 stands for an overflow return
  • 5 is a drain line
  • 6 is a valve
  • 8 a supply line
  • 10 a centrifuge 11 and 12 are two processes from the centrifuge, 13 a pump, 14 a further pump and 15 a distributor;
  • Fig. 3 shows a determined concentration curve of the phosphorus content in the
  • Fig. 4 shows a profile of the percentage decrease weight fraction of free
  • Fig. 5 shows exemlarisch the adjustment of the phosphorus content by dosing of acidic and alkaline agents in the process steps B, C and D;
  • Fig. 6 shows the technological classification of phospholipids, as they
  • FIG. 2 shows a device according to the invention which has a receptacle 1 for receiving the aqueous phase or the salt solution or a suspension of the salts described herein.
  • a line 2 in which a pump 14 is connected here
  • a container 3 is preferably designed as a constant pressure buffer container.
  • the Container 3 have an overflow return 4, which serves when exceeding an overflow level liquid from the container 2 in the
  • the container 3 further has a drain line 5 (preferably at its lower end), in which a valve 6 is connected here. With the valve 6, the volume flow in the drain line 5 can be controlled.
  • the drain line opens into a mixer 7.
  • a supply line 8 in which a pump 13 may be connected.
  • a further phase preferably the lipoid-containing (lipid) phase can be passed into the mixer 7.
  • the mixer 7 also has a drain line 9, which in an inlet of a
  • Centrifuge 10 opens. In the mixer 7, the two supplied phases are mixed.
  • the mixer 7 can be designed in various ways. So a static mixer or a dynamic mixer can be used. Also suitable are special forms such as a high-shear mixer or a nanoreactor. It is also conceivable to use as a mixer, the centrifuge itself. In this case, the lipoid phase and the salt solution (aqueous solution) are passed through separate feed lines in the centrifuge, where - for example, in a distributor 15 of the
  • Centrifuge drum the mixture of these two phases takes place.
  • Such distributors are known per se and serve to transfer the incoming product into the rotating drum.
  • a separation separator with a vertical axis of rotation is preferably used, which is designed to separate two liquid phases of different density.
  • the device may also be designed to operate under pressure p which is higher than the atmospheric pressure. Preferably, 1 bar ⁇ p ⁇ 10 bar.
  • the outlet pressure in the processes 1 1 and 12 should be higher than the inlet pressure in the supply line to the centrifuge. Preferably, it should be avoided to introduce air into the inlet in order to prevent an emulsion forming in the mixer and / or in the centrifuge drum to a disturbing extent.
  • the device can also be used in a subsequent step for the separation of free fatty acids from an oil phase.
  • main products derived from the oil may be used as fuels or as edible oils. If required, the recovered value products can also be esterified in one processing step in order to obtain biodiesel.
  • crude oil organic oil as used herein includes mixtures of biological origin, that is, from plants, algae, animals and / or
  • Microorganisms can be obtained and which have a water content of ⁇ 10% and a content of lipophilic substances comprising monoacylglycerides,
  • the lipoid phases may be extracts of oleaginous plants and microorganisms, such as rape seeds, soya, Camelopard, jatropha, palm trees, as well as algae and microalgae, as well as animal fats and oils.
  • the crude oil preferably has a water content of ⁇ 10% and a proportion of alkanes and / or cyclic aromatics and / or mono- / di- / triglycerides
  • An organic oil or a crude oil may for example be a vegetable oil.
  • the crude oil can also be an oil of animal origin.
  • the crude may be an already used oil, such as e.g. Frying fat, act, which has already been used and which it for further use, e.g. as fuel, to work up.
  • an already used oil such as e.g. Frying fat, act, which has already been used and which it for further use, e.g. as fuel, to work up.
  • the crude oil is an extract or extraction phases of lipid and lipoid stages from a previous separation or extraction
  • the crude oil can also be present in an amount of> 50% from organic
  • Solvents or hydrocarbon compounds exist.
  • fats and oils are classified in the class of lipids, while the group of lipoids are all other compounds of the class waxes, carotenoids, glycolipids, phosphatides, prostaglandins, etc.
  • oils or fats such as vegetable oils
  • Table 1 summarizes some classes of substances found in oils and / or fats derived from various crops. It can already be seen here that in general the neutral lipids make up the majority of the oils or fats, but the proportion of phospholipids and glycolipids /
  • Glycoglycerolipids / glycosphingolipids is variable.
  • the proportion of glycolipids, glycoglycerolipids and glycosphingolipids ranges from 0.2% in coconut oil, above approx. 2% in borage oil and 6.3-7% in rice bran oil up to 19.4% in oil from avocado cores.
  • Tab. 1 Content of lipids without ionic groups (NL), phospholipids (PL) and glycolipids together with glycoglycerolipids and glycosphingolipids (GL) in the seeds (S) or the oils of selected plants derived therefrom.
  • the content of PL and GL is given as a percentage of the total oil. In the case of semen, in some cases it is additionally stated how high the percentage of oil (total) is in comparison to the seed mass.
  • Rapeseed variant "Golden” Brassica X 34.8 98.8 3.0
  • Rapeseed variant "Zero Eruca” Brassica X 35,9 98, 1 1, 8
  • Jatropha Jatropha curcus X 32 97.6 1, 45 0.95
  • Crambe Crambe abyssinica X 75 88.6 1 1 -
  • Coriander oil Coriandrum sativum X 96.0 0.85 2.39
  • Niger seed Guizotia abyssinca X 97.0 0.28 1, 90
  • Hibiscus Hibiscus sabdariffa X 94, 1 2, 1 2.6
  • Crude oils include, but are not limited to, acai oil, acrocomia oil, almond oil, babassu oil, currant seed oil, borage seed oil, rapeseed oil, cashew oil, castor oil, coconut oil, coriander oil, corn oil, cottonseed oil, crumb oil, linseed oil, grapeseed oil , Hazelnut oil, other nut oils,
  • Palm oil peanut oil, pecan oil, pine kernel oil, pistachio oil, poppy seed oil, rice germ oil, thistle oil, camellia oil, sesame oil, shea butter oil, soybean oil, sunflower oil, tall oil, tsubaki oil, walnut oil, varieties of "natural" oils with altered
  • Neochloris oleoabundans oil Fatty acid compositions via genetically modified organisms (GMOs) or traditional breeds, Neochloris oleoabundans oil, Scenedesmus dimorphus oil, Euglena gracilis oil, Phaeodactylum tricornutum oil, Pleurochrysis carterae oil, Prymnesium parvum oil, Tetraselmis chui oil, Tetraselmis suecica oil, Isochrysis galbana oil, Nannochloropsis salina Oil, Botryococcus braunii oil, Dunaliella tertiolecta oil, Nannochloris oil, Spirulina oil, Chlorophyceae oil, Bacilliarophyta oil, a mixture of the foregoing oils as well as animal oils (especially marine oils) and biodiesel.
  • GMOs genetically modified organisms
  • Neochloris oleoabundans oil Scenedes
  • a crude oil phase and a solid phase are obtained.
  • the solids of the solid phase can be further processed, for example
  • Fatty acids, phospholipids, tocopherol and other substances are preferably present in a content of less than 400 ppm, preferably less than 100 ppm in the crude oil.
  • degumming In a further step of the oil processing, the so-called degumming, also called degumming, takes place.
  • phospholipids are separated. These are phosphorus-containing organic substances which have the properties of a fat.
  • Non-hydratable phospholipids are for example
  • Cations of the phospholipids are e.g. Sodium, potassium, calcium, etc.
  • a second step B first hydratable phospholipids and / or non-hydratable phospholipids, which, however, easily in a
  • For degumming water is added to the crude oil and phospholipids, if they are hydratable, hydrated. These phospholipids accumulate as sludge and can be centrifugally separated from the oil.
  • Non-hydratable phospholipids can be destroyed by heating, by addition of certain adsorbents, by filtration and / or by adding an acid as a complex and thereby converted into a hydratable form.
  • the addition of acid is called an acid degumming while the
  • water degumming Obtained after degumming a degummed oil fraction, which, however, still a residual amount of phospholipids, especially non-hydratable
  • an acidic aqueous phase which contains, for example, citric acid, acetic acid, formic acid and / or oxalic acid.
  • citric acid acetic acid
  • formic acid aqueous phase
  • oxalic acid aqueous phase
  • hydrochloric acid sulfuric acid, nitric acid and / or phosphoric acid can be used.
  • Fig. 6 shows again illustratively and by way of example the classification of
  • Phospholipids in non-hydratable and hydratable phospholipids are Phospholipids in non-hydratable and hydratable phospholipids. (NHP's and HP's).
  • PE in the acid is easy to convert into a hydratable form in that the amino group is protonated as shown in the figure.
  • phosphatidic acid compounds e.g. dissolved salts.
  • fatty acids is used synonymously with the term “free fatty acids” herein.
  • free is intended to clarify that they are unbound fatty acids, because in the nonpolar oil phase, the majority of the constituents contain bound fatty acids, for example as triacylglycerides, diacylglycerides or monoacylglycerides.
  • Fatty acids are aliphatic monocarboxylic acids having at least 8 carbon atoms.
  • fatty acids refers to free fatty acids (also abbreviated to FFAs), which are fatty acids which are free and non-glyceridically linked (i.e., to glycerol) or glycosidically (i.e., to sugar moieties).
  • fatty acids preferably includes the following compounds:
  • Retinoic acid isopalmitic acid, pristanoic acid, phytanic acid, 1 1, 1 2-methylene-octadecanoic acid, 9,1 0-methylene-hexadecanoic acid, coronaric acid, ⁇ R, S) -lipoic acid, (S) -liponic acid, (F?) -Lipoic acid, 6,8 (methylsulfanyl) octanoic acid, 4,6-bis (methylsulfanyl) hexanoic acid, 2,4-bis (methylsulfanyl) butanoic acid, 1,2-dithiolanecarboxylic acid, (R, S) -6,8-dithian Octanoic acid, (S) -6,8-dithiane octanoic acid,
  • Brassylic acid, and thapsic acid are examples of free fatty acids.
  • free fatty acids may be present as a pure fraction in edible fats e.g. in margarines or in colors or as possibly also as biodiesel fuel.
  • a fourth step D in which the reclaimed oil phase is treated with an alkaline agent.
  • an alkaline liquor ie a sodium hydroxide or a potassium hydroxide solution, wherein the use of sodium hydroxide solution is particularly efficient and
  • This lye separates the free fatty acids as by-products from the oil phase.
  • the free fatty acids are saponified and may be due to the previous separation of phospholipids as well as unwanted cations
  • soap cleavage e.g. by adding acid
  • soap cleavage e.g. by adding acid
  • Main product are created and a fraction of saponified free fatty acids are obtained with a very high degree of purity.
  • the fourth step takes place by the fourth step, by adding an alkaline agent, a deposition of a fraction of a relatively pure fatty acid as a soap.
  • the phosphorus content in the reclaimed oil phase can be lowered to a level of below 3 ppm, preferably even below 1 ppm, as with the soap levels of NHPs after cut 3 are more easily removed.
  • bleaching earth can be used as an agent, which can be used more efficiently in the present process. It is also possible to add the bleaching earth simultaneously with the sodium bicarbonate or sodium acetate.
  • the deodorization can be carried out, for example, by steam distillation in a so-called deodorizer. Thereby, e.g. unwanted odors are removed from the oil
  • further steps may be taken in the refining process of the oil and / or fat before or after bleaching and / or deodorizing.
  • oil polishing and / or vacuum drying may be used to remove portions of water.
  • the addition of sodium acetate instead of the sodium bicarbonate take place. It has surprisingly been found that with the addition of sodium acetate an additional accumulation of steryl glycosides in the aqueous phase takes place, which are separated from the degummed oil fraction. At the same time remaining phospholipids, free fatty acids and alkaline earth compounds, such. Chlorophyll remain predominantly or almost completely in the oil phase.
  • the steryl glycosides are sterols which are glycosidically linked via a hydroxy group to at least one saccharide radical. Sterylglycosides occur in plants, animals, fungi and also in some bacteria. In animals, for example, there is the cholesterol glucuronide in which a cholesterol residue is linked to a glucuronic acid residue.
  • the sterol moiety is preferably campesterol, stigmasterol, sitosterol, brassicasterol or dihydrositosterol, and the saccharide moiety preferably is glucose, galactose, mannose, glucuronic acid, xylose, rhamnose or arabinose.
  • the saccharide residue is linked to sterol in the case of plant sterol glycosides via the hydroxy group at C3 of the A ring of the sterol. Further saccharide residues may be linked to this first saccharide residue via a ⁇ -1, 4-glycosidic bond or a ⁇ -1, 6-glycosidic bond.
  • acylated steryl glycosides ASGs in which a saccharide residue at its hydroxy group at position 6 is esterified with a fatty acid. In many plants acylated steryl glycosides could be detected in virtually all plant parts in up to 0.125 wt .-%.
  • the proportion of non-acylated and acylated steryl glycosides in palm and soybean oil is particularly high.
  • a high proportion of steryl glycosides is discussed in connection with a poorer filterability.
  • a further step by adding an alkaline agent, a deposition phase.
  • the steryl glycoside content in the water phase is relatively high, ie at least over 60% by weight, preferably over 80% by weight, compared to the steryl glycoside content in the oil phase.
  • the recovered steryl glycosides can be used in cosmetics and / or pharmaceutical products.
  • a fourth step D in which the reclaimed oil phase is treated with an alkaline agent, the cleavage takes place in non-polar oil phase and polar aqueous soap phase.
  • This is preferably an alkali lye, that is to say a sodium hydroxide or a potassium hydroxide solution, wherein the use of sodium hydroxide solution has proven to be particularly preferred in this case as well.
  • the free fatty acids are saponified and can optionally be recovered by subsequent soap cleavage.
  • Crude oil (FFA content 0.48% by weight, H 2 0 content 0.05% by weight, iron content 1, 13 ppm, phosphorus content 80.42 ppm, magnesium content 8.47 ppm, calcium content 45 , 10 ppm) is filled as press oil of a rapeseed in the storage tank (storage tank 1).
  • the crude oil in the storage tank 1 is heated to 85 ° C and then with 0.1 wt .-% Verd. Citric acid (33% -.%., To room temperature) and stirred vigorously for 30 seconds and then 10 minutes at about Stirred at 100 to 150 rpm. Thereafter, 0.6% by weight of water is added.
  • the mixture of oil and dilute citric acid is then pumped into the separation separator and then, at a rate of 200 l / h, the aqueous phase B is separated from the oily phase A.
  • the aqueous phase A is collected and stored until further use.
  • the oily phase A is transferred for further processing in a further storage tank (storage tank 2).
  • the oily phase A is subsequently analyzed (FFA content 0.48% by weight, H 2 O content 0.23% by weight, iron content 0.34 ppm, phosphorus content 26.1 ppm, magnesium content 2 , 32 ppm, calcium content 9.04 ppm).
  • oily phase A is brought to a process temperature of 45 ° C and a sufficient volume of 8% - wt.%
  • Neutralization degree of free fatty acids of 90% is achieved.
  • a sufficient volume of sodium bicarbonate may be chosen such that more than 0.1% by weight of NaHCO 3 , based on the weight of oil phase used, for example 0.3% by weight of NaHCO 3, is added.
  • the addition does not necessarily have to be carried out as a solution, but can also be carried out as a powder. Subsequently, water can be added separately. Finally, using Ystral mixer for 30
  • the aqueous phase B is collected. In this Sterylglycoside were detected by means of DC.
  • the oily phase A is transferred back into the storage tank 1 for further processing.
  • the oily phase is subsequently analyzed (FFA content 0.32% by weight, H 2 O content 0.23% by weight, iron content 0.15 ppm, phosphorus content 5.75 ppm, magnesium content 0, 69 ppm, calcium content 3.46 ppm).
  • Crude oil (FFA content 0.43% by weight, H 2 O content 0.05% by weight, iron content 0.60 ppm, phosphorus content 52.52 ppm, magnesium content 5.43 ppm, calcium content 31 , 33 ppm) is filled as press oil of a rapeseed in the storage tank (storage tank 1).
  • the Rohölp is heated in the storage tank 1 to 85 ° C and then with 0.1 wt .-% citric acid (33%, to room temperature) and stirred vigorously for 30 seconds and then stirred for 10 min at about 100 to 150 rpm. Thereafter, 0.6% by weight of water is added.
  • the mixture of crude oil and dilute citric acid is then pumped into the separation separator and then, at a rate of 2001 / h, the aqueous phase B is separated from the oily phase A.
  • the aqueous phase A is collected and stored until further use.
  • the oily phase A is transferred for further processing in a further storage tank (storage tank 2).
  • the oily phase A is subsequently analyzed (FFA content 0.43% by weight, H 2 O content 0.26% by weight, iron content 0.17 ppm, phosphorus content 12.49 ppm, magnesium content 0 , 40 ppm, calcium content 1, 85 ppm).
  • oily phase A is brought to a process temperature of 45 ° C and a sufficient volume of 8% sodium acetate solution was added so that a neutralization degree of the free fatty acids of 90% is achieved.
  • the mixture is then stirred intensively for 30 seconds, preferably without gas introduction, by means of the Ystral mixer and then stirred normally for 10 minutes and preferably without gas introduction.
  • the resulting mixture is then pumped into the separation separator to separate the aqueous phase B from the oily phase A at a rate of 200 l / h.
  • aqueous phase B steryl glycosides were detected by TLC.
  • the oily phase A is transferred back into the storage tank 1 for further processing.
  • the oily phase A is analyzed (FFA content 0.43 wt.%, H 2 0 content 0.24 wt.%, Iron content 0.09 ppm, phosphorus content 5.79 ppm, magnesium content 0, 25 ppm, calcium content 0.89 ppm).
  • Crude oil (FFA content 0.54%, H 2 O content 0.05%, iron content 0.53 ppm, phosphorus content 78.32 ppm, magnesium content 5.70 ppm, calcium content 33.04 ppm) is filled as press oil of a rape seed in the storage tank (storage tank 1).
  • the crude oil in the storage tank 1 is heated to about 85 ° C and
  • citric acid 33%, to room temperature
  • 0.6% by weight of water is added.
  • the mixture of crude oil and dilute citric acid is then pumped into the separation separator and then, at a rate of 200 l / h, the aqueous phase B is separated from the oily phase A.
  • the aqueous phase A is collected and stored until further use.
  • the oily phase B is transferred for further processing in a further storage tank (storage tank 2).
  • the oily Phase A is subsequently analyzed (FFA content 0.48% by weight, H 2 O content 0.53% by weight, iron content 0.15 ppm, phosphorus content 1 6.57 ppm, magnesium content 0, 28 ppm, calcium content 1, 78 ppm).
  • oily phase A is brought to a process temperature of 40-45 ° C and a sufficient volume of 8% sodium carbonate solution was added so that a theoretical neutralization degree of the free fatty acids of 90% is achieved.
  • the mixture is then stirred for 30 seconds by means of the Ystral mixer intensively and preferably without gas introduction, and then stirred normally for 10 minutes, normally without gas introduction.
  • the resulting mixture is then pumped into the separation separator to separate the aqueous phase B from the oily phase A at a rate of 200 l / h.
  • aqueous phase B steryl glycosides were detected by TLC.
  • the oily phase A is transferred back into the storage tank 1 for further processing.
  • the oily phase A is analyzed (FFA content 0.25 wt.%, H 2 0 content 0.49 wt.%, Iron content 0.15 ppm, phosphorus content 2.21 ppm, magnesium content 0, 07 ppm, calcium content 0.32 ppm).
  • Examples 1 and 2 can then be worked up by adding a sufficient amount of 12% NaOH solution in a so-called oil polishing process. This allows separation of the oil phase from saponified free fatty acids.
  • Ansch manend can be done bleaching and deodorizing.
  • Fig. 3 shows, on the basis of experimentally determined data, that the addition of a sodium bicarbonate solution in step C reduces the phosphorus content in the oil phase. This reduced phosphorus content is accompanied by the reduction of phospholipids in the oil phase.
  • Fig. 4 also shows that the proportion of free fatty acids is not reduced with the addition of sodium bicarbonate. In comparison, it can be seen in Fig. 4 that it comes with the addition of sodium carbonate to a reduction of fatty acids in the oil phase.
  • Crude oil A1 was treated with aqueous citric acid solution (33% strength, addition: 1000 ppm) at 85 ° C. and mixed with a shaving head mixer for 30 seconds. After a reaction time of 10 minutes, a sample was taken and the oil phase A2 was measured.
  • 5a shows an exemplary sequence of the method steps B and C, as well as the optional method step D.
  • citric acid is first added as an aqueous solution.
  • the aqueous phase r-1 is separated from the oil phase.
  • the oil phase is a share of
  • Powder added preferably with subsequent addition of water - added.
  • the aqueous phase r 2 is separated from the oil phase.
  • further phospholipids can be separated.
  • the concentration of phospholipids in the oil phase can be very low, so that they are barely to be considered compared to the fatty acids.
  • the boundary Z between the two steps can thus be selected variably. And depends inter alia on the desired targets for the purity of the FFA phase.
  • the concentration of free fatty acids can be determined by determining the acid number of the oil phase after the respective steps.
  • the acid number (SZ) is a measure of the content of a fat / oil of free fatty acids (FFA). It corresponds to the amount of potassium hydroxide (KOH) in mg needed to neutralize the free fatty acids contained in 1 g of fat.
  • KOH potassium hydroxide
  • the content of free fatty acids in mass percent in fat / oil can be calculated directly via the molar masses of KOH and oleic acid. The calculation is made according to the following equation:
  • Magnesium and iron in the oil samples are measured by Inductively Coupled Plasma (ICP) emission spectral analysis.
  • ICP Inductively Coupled Plasma
  • the aerosol-atomized sample material is injected into the hot core of an argon plasma. At a temperature of more than 8000K, the sample material is atomized and simultaneously excited. It can be qualitatively and quantitatively analyzed for trace elements in the emission spectrum.
  • Thin-layer chromatography was carried out with silica gel G plates. The separation is carried out with a mixture of chloroform / acetone / water (30/60/2). The development was carried out with a Naphthyl ethylenediamine reagent which sugar residues of the oil impurities can be displayed in color.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Microbiology (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fats And Perfumes (AREA)
  • Edible Oils And Fats (AREA)

Abstract

La présente invention concerne un procédé de traitement par étapes d'une huile organique, comprenant les étapes consistant à : A) préparer une huile brute ; B) démucilaginer l'huile brute en y ajoutant de l'eau ou de l'acide avec formation d'au moins deux phases, une phase aqueuse et une phase huileuse, et séparer la phase aqueuse enrichie en phospholipide d'avec la phase huileuse ; C) ajouter de l'hydrogénocarbonate de sodium et/ou de l'acétate de sodium à la phase huileuse obtenue à l'étape B, et séparer les composés alcalino-terreux et/ou les phospholipides et/ou l'acétate de stéryle en solution ou en suspension dans une phase aqueuse d'avec la phase huileuse. L'invention concerne en outre un dispositif adapté pour mettre en œuvre le procédé.
EP15727638.7A 2014-06-05 2015-06-03 Procédé et dispositif de traitement par étapes d'une huile organique Active EP3152283B1 (fr)

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PL15727638T PL3152283T3 (pl) 2014-06-05 2015-06-03 Sposób i urządzenie do stopniowego przetwarzania oleju organicznego

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GB2538758A (en) 2015-05-27 2016-11-30 Green Lizard Tech Ltd Process for removing chloropropanols and/or glycidol
EP3098293A1 (fr) 2015-05-27 2016-11-30 Evonik Degussa GmbH Procédé d'élimination de métaux à partir d'une huile de glycérides contenant un métal comprenant le traitement d'un sel d'ammonium quaternaire basique
EP3098292A1 (fr) 2015-05-27 2016-11-30 Evonik Degussa GmbH Procédé de raffinage d'huile glycéridique comprenant un traitement de sel d'ammonium quaternaire basique
DE102015212749A1 (de) 2015-07-08 2017-01-12 Evonik Degussa Gmbh Verfahren zur Entfeuchtung von feuchten Gasgemischen
DE102016210484A1 (de) 2016-06-14 2017-12-14 Evonik Degussa Gmbh Verfahren zur Entfeuchtung von feuchten Gasgemischen
EP3257568B1 (fr) 2016-06-14 2019-09-18 Evonik Degussa GmbH Procede de deshumidification de melanges gazeux humides par des liquides ioniques
DE102016210478A1 (de) 2016-06-14 2017-12-14 Evonik Degussa Gmbh Verfahren zur Entfeuchtung von feuchten Gasgemischen
WO2019092017A1 (fr) 2017-11-10 2019-05-16 Evonik Degussa Gmbh Procédé d'extraction d'acides gras à partir d'huiles triglycéridiques
WO2019092013A1 (fr) 2017-11-10 2019-05-16 Evonik Degussa Gmbh Procédé d'extraction d'acides gras à partir d'huiles triglycéridiques
EP3483237A1 (fr) 2017-11-10 2019-05-15 Evonik Degussa GmbH Procédé d'extraction d'acides gras d'une huile glycéridique
WO2019157334A1 (fr) 2018-02-09 2019-08-15 Poet Research, Inc. Procédés de raffinage d'une composition d'huile de grains pour fabriquer un ou plusieurs produits d'huile de grains, et systèmes associés
PL3799598T3 (pl) 2018-06-11 2023-02-20 Poet Research, Inc. Sposoby rafinacji surowca stanowiącego kompozycję oleju fuzlowego i skład powiązanych układów oraz zastosowania
FI128504B (en) 2018-12-14 2020-06-30 Upm Kymmene Corp A process for purifying a renewable feed comprising triglycerides
KR102395099B1 (ko) * 2019-08-02 2022-05-13 주식회사 청담 탈산 장치 및 이를 이용하는 탈산유 제조 방법
US11987832B2 (en) 2020-08-06 2024-05-21 Poet Research, Inc. Endogenous lipase for metal reduction in distillers corn oil
KR102639682B1 (ko) * 2021-04-07 2024-02-22 농업회사법인 크레이지피넛 주식회사 땅콩오일 정제방법

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MY177293A (en) 2020-09-11
PL3152283T3 (pl) 2021-02-08
JP6574837B2 (ja) 2019-09-11
CN106459828A (zh) 2017-02-22
US20170107449A1 (en) 2017-04-20
EP3152283B1 (fr) 2020-08-05
BR112016027964A2 (pt) 2017-08-22
CA2950806C (fr) 2021-12-28
CA2950806A1 (fr) 2015-12-10
JP2017519892A (ja) 2017-07-20
BR112016027964B1 (pt) 2021-11-30
DK3152283T3 (da) 2020-11-02
RU2016150076A3 (fr) 2018-09-21
US10214705B2 (en) 2019-02-26
ES2829643T3 (es) 2021-06-01
RU2016150076A (ru) 2018-07-09

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