CN1038144C - Decolouring method for ricebran wax and other natural waxes - Google Patents

Decolouring method for ricebran wax and other natural waxes Download PDF

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Publication number
CN1038144C
CN1038144C CN91109471A CN91109471A CN1038144C CN 1038144 C CN1038144 C CN 1038144C CN 91109471 A CN91109471 A CN 91109471A CN 91109471 A CN91109471 A CN 91109471A CN 1038144 C CN1038144 C CN 1038144C
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China
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wax
solvent
rice bran
adsorption column
solution
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CN1071446A (en
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宁永成
史兵
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Tsinghua University
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Tsinghua University
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/74Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes

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  • Fats And Perfumes (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The present invention relates to a column chromatography decoloring method for rice bran wax and other kinds of natural wax by making use of an adsorbent, which belongs to the technical field of refining wax. A proper fine particle adsorbent is adopted to be loaded in an adsorption column. A saturated hydrocarbon is taken as a solvent, and the wax which is dissolved by heating is added in the column. The adsorption column maintains a certain temperature (the temperature range is from 44 to 48 DEG C.), the solvent is added to be washed, and the white or light colored wax solution is obtained. The adsorbent can be used repeatedly, and a single solvent is recovered easily to be used continuously by replenishing procedure slightly. Compared with the formerly used chemical methods, the obtained method has greatly improved color, simple process and fewer required devices.

Description

The method of decolorizing and refining of rice bran wax and other natural wax
The present invention is a kind of column chromatography method that adopts sorbent material to make rice bran wax and other natural wax decolour, belongs to the field of refinement of wax.
Rice bran wax is the solid matter of separating out from Rice pollard oil.Its main body is the mixture of the carboxylicesters of longer chain fatty acid and long chain aliphatic alcohol.Contain Rice pollard oil about 30% through the rice bran waxy stone that squeezing obtains.The rice bran waxy stone after a large amount of Rice pollard oils are removed in saponification or solvent extraction the smart wax (oleaginousness is below 8%) of rice bran.The smart wax of rice bran is Vandyke brown because of containing a large amount of coloring matters, and its purposes is limited, the processing of need decolouring.Other band look natural wax also needs the processing of decolouring.
Chemical method is all adopted in existing rice bran wax decolouring.With day the disclosure to specially permit clear 51-30204 be example:
Add rice bran wax 100 grams in flask, 300~500 milliliters of butanone 76 ℃~77 ℃ following reflux, dissolve rice bran wax fully.Be cooled to 55 ℃, dystectic rice bran wax is separated out, and leaches rice bran wax, and its fusing point is 81.6 ℃, yield 59.2%.The gained rice bran wax slowly is heated to 82 ℃~85 ℃, stirs to splash into 35%H down slowly 2O 2(its consumption be rice bran wax heavy 2%), make it with chaff wax in pigment reaction.Reaction is heated to 95 ℃~98 ℃ to reaction mixture after ending, and carries out violent stirring.Under this temperature, drip 25%NaClO slowly 2Solution (its consumption be rice bran wax weight 6%).Drip off after this solution, 95 ℃~98 ℃ following violent stirring tens of minutes.Keep this temperature, add rice bran wax and weigh 3% the oxalic acid (H that contains crystal water 2C 2O 42H 2O) solution carries out violent stirring again.
The decolouring rice bran wax of gained adds hot water by 1: 1 consumption, at 95 ℃~98 ℃ following violent stirring numbers minute, adds anhydrous sorbitol six oleic acid esters of rice bran wax weight 1% again, and violent stirring is tens of minutes under this temperature, leaves standstill later on, centrifugal, tells rice bran wax.
From as can be known above-mentioned, its decolorization step is too many, and operation is bothersome, influences productive rate.
The existing long history of adsorption bleaching or chromatography decolouring also has some patent documentations, as day the disclosure specially permit clear 49-110588 (method of removing of coloring material).This patent thinks that to have some shortcomings with activated carbon decolorizing (only effective to low molecule pigment molecular; Also remove fragrance etc. during decolouring), so with 60 orders above chitin (≠ チ Application, Chitin) powder.The decolouring object is natural goods, synthetics, brewing material.
With coloring matter water or appropriate solvent dissolving, add the chitin powder, coloring matter is adsorbed on the chitin powder then.Tell the solution that painted chitin powder has just obtained the decolouring product.
Painted chitin powder is used diluted alkaline, diluted acid and washing successively, can use repeatedly again.
Decolour with absorption method, its important prerequisite is raw material water soluble or organic solvent (neat solvent or mixed solvent).As decolouring with chromatography, sample should dissolve among the developping agent (eluent) at least.Like this, in expansion process, the different components in the mixture separates along expansion direction mutually to some extent because of having different absorption-analytic functions.
Now Tuo Se object is rice bran wax and other natural wax, and it has very special solubility properties.They are all insoluble or slightly soluble (more water insoluble) in most of organic solvents, and this may be not see the reason made from extra care rice bran wax and other natural wax with absorption method or chromatography so far.
Main purpose of the present invention to improve its using value, is developed this natural resource for obtaining coloury high-quality rice bran wax and other natural wax better.Secondly, the present invention intends simplifying the processing step of rice bran wax and other natural wax decolour, makes the easier enforcement of production process.
The present invention is a kind of column chromatography method that adopts sorbent material to make rice bran wax and other natural wax decolour, it is characterized in that to have the inorganic of decolouring function or organism particulate sorbent material, pack into and be with in the adsorption column of muff, do the eluent solvent adsorption column with stable hydrocarbon, reduce when approaching the sorbent material plane in solvent liquid level, add with this solvent and rice bran wax or other natural wax solution prepared through heating.When treating that the wax liquid level of solution is reduced to the sorbent material plane, keep a certain selected column temperature in 44 ℃~80 ℃ temperature range, with this eluent solvent adsorption column (promptly carrying out column chromatography), white or light wax solution are flowed out in the adsorption column lower end, through distill product, solvent recuperation; Obtain the solution of coloring matter later on, and from wherein reclaiming solvent; Adsorption column can be recycled.
Adopt the present invention that quality product is greatly improved.The rice bran wax decolorizing effect is fine, and the products obtained therefrom color and luster obviously is better than imported product, makes it can open up new purposes (as makeup etc.).In decolorization, the impurity in the rice bran wax (as Rice pollard oil) content also descends before the decolouring.
In addition, the decoloration process step is simplified greatly, and required processing unit quantity reduces.
Consider from Financial cost, still have any problem at present and the strict contrast of chemical method, but the clear 51-30204 method of Yin Tekai the first step productive rate only is 59.2%, and this law products obtained therefrom rate is higher; Solvent is inexpensive and be easy to recovery, only need replenish a small amount of solvent and circulate; Sorbent material uses repeatedly; Therefore but the cost of this method of guestimate is not higher than chemical method.
Why obtaining these excellent effect, is because of following reason:
1. select for use to have the inorganic of decolouring function or organism particulate sorbent material, utilize column chromatography method (physical method) to come the decoloring method of substituted chemistry reaction.
2. utilize rice bran wax and the dissolubility property of other natural wax in some solvent, adopt the insulation column chromatography, reached good decolorizing effect.
3. with single solvent dissolving wax and drip washing adsorption column, easy and simple to handle, solvent recuperation is easy to finish.
It is as follows now to enumerate embodiment:
Example one
Select sherwood oil (60 ℃~90 ℃) for use so be unique solvent of this experiment.
Take by weighing rice bran wax 2 and restrain, add 20 milliliters of sherwood oils, heating with the rice bran wax dissolving, gets deep brown solution down, and is standby.
22 millimeters of the adsorption column internal diameters of band muff.Al packs into 2O 3(100~200 order) 15 grams add 50 milliliters of sherwood oils later on.Keep the muff temperature at 54 ℃~56 ℃ later on always.Treat that the sherwood oil liquid level reduces, near Al 2O 3During the plane, add rice bran wax solution, treat that the liquid level of solution of rice bran wax is reduced to Al 2O 3During the surface, add sherwood oil in the post successively.In the process of sherwood oil drip washing adsorption column, rice bran wax separates with coloring matter.Rice bran wax solution flows out from the lower end of adsorption column earlier.When flowing out the strong solution of wax, because of the adularescent rice bran wax is separated out in solution so solution is white in color.About 70 milliliters of rice bran wax solution total amount.Must be bordering on rice bran wax 1.74 grams of white after distilling out sherwood oil, promptly the yield of rice bran wax is 87%.
Continue drip washing through sherwood oil, get deep yellow solution, about 15 milliliters of its volume.
Example two is to example nine
Working method and example one are identical, and the height that sorbent material is filled is close with example one.Simple and clear for narrating, the operating parameters of each example and as a result following table represent.Example two is to the rice bran wax of example eight usefulness, the beeswax of example nine usefulness.Sequence number sorbent material column temperature advances wax amount (gram) and goes out wax amount (gram) productive rate % solvent product color and luster remarks 2 Al 2O 344~46 ℃ 0.715 0.527 74 sherwood oil be white-and pale yellow
(100-200 order) (90-120 ℃) 3 Al 2O 380 ℃ 1.590 1.194 75 sherwood oil be white-and pale yellow
54~56 ℃ 0.194 0.165 85 sherwood oil of (100-200 order) (90-120 ℃) 4 carclazytes be white-pale yellow adsorption column
54~56 ℃ 0.742 0.373 50 sherwood oil of the active class of (60-90 ℃) internal diameter 8mm5 is white
54~56 ℃ 0.399 0.337 84 sherwood oil of (60-90 ℃) 6 diatomite be white-and pale yellow
54~56 ℃ 1.470 1.341 91 sherwood oil of (60-90 ℃) 7 polymeric amide be white-and pale yellow
54~56 ℃ 0.152 0.112 74 sherwood oil of (60-90 ℃) 8 methacrylic acids be white-pale yellow adsorption column
Resin (60-90 ℃) internal diameter 8mm9 Al 2O 354~56 ℃ 1.430 1.115 78 sherwood oil is white
(1000-200 order)

Claims (1)

1, a kind of column chromatography method that adopts sorbent material to make rice bran wax and other natural wax decolour, it is characterized in that to have the inorganics or the organism particulate sorbent material of decolouring function, pack into and be with in the adsorption column of muff, do the eluent solvent adsorption column with sherwood oil, when the solvent liquid level reduction approaches the sorbent material plane, add with this solvent and rice bran wax or other natural wax solution prepared through heating, when treating that the wax liquid level of solution is reduced to the sorbent material plane, in 44 ℃~80 ℃ temperature range, keep column temperature, with this eluent solvent adsorption column, white or light wax solution are flowed out in the adsorption column lower end, through distill product, solvent recuperation; Obtain the solution of coloring matter later on, and from wherein reclaiming solvent; Adsorption column can be recycled.
CN91109471A 1991-10-10 1991-10-10 Decolouring method for ricebran wax and other natural waxes Expired - Fee Related CN1038144C (en)

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CN91109471A CN1038144C (en) 1991-10-10 1991-10-10 Decolouring method for ricebran wax and other natural waxes

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Application Number Priority Date Filing Date Title
CN91109471A CN1038144C (en) 1991-10-10 1991-10-10 Decolouring method for ricebran wax and other natural waxes

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CN1071446A CN1071446A (en) 1993-04-28
CN1038144C true CN1038144C (en) 1998-04-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101104603B (en) * 2006-07-12 2010-04-14 上海复旦复华药业有限公司 Method for producing phentolamine
CN101348750B (en) * 2008-08-29 2011-01-05 中国林业科学研究院资源昆虫研究所 Decolorizing method of Chinese haze tallow

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103981032B (en) * 2014-05-26 2015-09-30 舒城县金禾油脂科技开发有限公司 A kind of decoloring method of rice bran wax
CN105695103B (en) * 2016-03-17 2019-09-27 广西大海阳光药业有限公司 A method of the Hydrolysis kinetics cerosin from filter mud
DE202020102533U1 (en) 2020-05-06 2020-05-20 KAHL G.m.b.H. & Co. K.G. Membrane filtration system for bleaching animal waxes
CN115651767B (en) * 2022-08-17 2024-01-26 河南福美生物科技有限公司 Animal and plant wax refining method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101104603B (en) * 2006-07-12 2010-04-14 上海复旦复华药业有限公司 Method for producing phentolamine
CN101348750B (en) * 2008-08-29 2011-01-05 中国林业科学研究院资源昆虫研究所 Decolorizing method of Chinese haze tallow

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