CN104962389B - Solid base and the method for realizing gutter oil collaboration depickling decoloration using solid base - Google Patents
Solid base and the method for realizing gutter oil collaboration depickling decoloration using solid base Download PDFInfo
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- CN104962389B CN104962389B CN201510413499.3A CN201510413499A CN104962389B CN 104962389 B CN104962389 B CN 104962389B CN 201510413499 A CN201510413499 A CN 201510413499A CN 104962389 B CN104962389 B CN 104962389B
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Abstract
The present invention relates to oil and fat refining manufacture field, more particularly to a kind of solid base and the method for realizing gutter oil collaboration depickling decoloration using solid base.It is mainly process object with gutter oil, depickling decolorization is carried out to it using the composite solid alkali.The composite solid alkali is made of activated carbon and atlapulgite, characterization of adsorption of the one side due to preparing solid base, by changing solid base material rate and impregnation liquid concentration, it can be with the decolorization of generally applicable separate sources and type gutter oil, on the other hand, pass through control process temperature, time, solid base usage amount, thus it is possible to vary the depickling decolorizing efficiency of gutter oil, the gutter oil depickling decolorizing effect being optimal.Using the synergistic effect between compound load alkali, gutter oil depickling decolorization simultaneously is not only realized, but also the process also has the features such as depickling decolorizing efficiency is high, neutral oil yield is high.Treated, and product completely can be as the raw material of follow-up deep processing.
Description
Technical field
The present invention relates to oil and fat refining manufacture field, more particularly to a kind of solid base and utilization solid base realize gutter oil
The method for cooperateing with depickling decoloration.
Background technology
As the improvement of people's living standards, the grease that daily life and food processing enterprises are discarded is more and more.It is main
It to derive from catering industry and process food and clean the waste oil of the oil slick, fried food that are discharged after tableware, animals and plants oil product leftover bits and pieces
Material, acidification grease etc., are commonly called as gutter oil, hogwash fat or swill oil.Although the waste grease yield in China is huge at present, not
Some obtains adequately rationally recycling and utilizes.If these waste greases are directly discharged into sewer, it can not only block, corrode
Pipeline, and every kilogram of waste oil can be such that 15000 square metres of waters are polluted, and the eutrophication of water body can be caused when serious.Separately
On the one hand, some illegal retailers are to seek exorbitant profit, and the waste grease of recycling is added through the techniques such as simply heating, removing slag, be dehydrated
It after work, is sold as edible oil product, food-safe and people's health causes great harm.According to statistics, China is every year extremely
Ten thousand tons of waste greases of 300-500 are generated less, and rationally recycling waste grease resource has become China's sustainable and healthy development and compels
The problem of eyebrows and eyelashes.
Free fatty and foreign pigment in separation removal waste grease are important in process for carrying out pretreatment on waste oil
Processing procedure.Existing depickling discoloration method is more, generally uses alkali refining method to remove free fatty respectively, is removed using carclazyte
Foreign pigment.But on the one hand good depickling or decolorizing effect is not achieved in these techniques in the processing of waste grease；Another party
Surface current journey is complicated, has the generation of secondary pollution waste.
In recent years also there are some depicklings to decolourize new processing method, as CN104450207 is dropped using glycerine esterification method
The acid value of low gutter oil, what although this method took full advantage of that the free acid in gutter oil is effective is converted into ester, and makes
Oleic acid value is reduced to 0.5mgKOH/g after processing, but this method condition is more harsh, and needs to carry out multistep rectifying point to product
From equal last handling processes；Using a kind of silicic acid magnesium material, ditch oil carries out adsorption bleaching processing to CN103589517 over the ground, can reach
Certain decolorizing effect, and the characteristic of magnesium silicate is combined, acid value can be reduced to a certain extent, but removal effect is not obvious,
Acid value of oil and fat cannot be satisfied the requirement directly as follow-up deep processing raw material still in 3.5mgKOH/g or more after processing.
Invention content
The present invention in view of the deficiencies of the prior art, asks to solve disposably to complete the processing of depickling decoloration of gutter oil
Topic proposes a kind of solid base and the method using solid base realization gutter oil collaboration depickling decoloration.
The technical scheme is that：
The invention discloses a kind of solid base, the solid base is using activated carbon and atlapulgite as raw material, by mass parts
Activated carbon is fully ground with atlapulgite after mixing by number meter, 55-70 part of activated carbon, 30-45 parts of atlapulgite, 500 parts of addition
Dilute hydrochloric acid filters after stirring 1h, after distilled water flushing to neutrality, obtained solid is filtered, in an oven in 105-110 DEG C of drying
Taken out after 2h, by the activated carbon of gained and atlapulgite mixture be added in the NaOH solution that mass concentration is 10%-30% into
12h is stirred at room temperature in row impregnation, after filtering, takes out, is put into after filtering obtained solid is placed at 105-110 DEG C dry 3h
It is cooled down to get solid base in drier.
The above activated carbon and atlapulgite are commercial product.
Another of the present invention also discloses application of the above-mentioned solid base for gutter oil collaboration depickling decoloration.
Third object of the present invention is to disclose a kind of method for realizing gutter oil collaboration depickling decoloration using solid base,
The specific steps are：
(1) filtering and removing slag
The gutter oil of recycling contains a large amount of solid residue, to remove insoluble impurities, carries out machinery to gutter oil first
Filtration treatment removes most solid residue.
(2) distillation dehydration
Gutter oil after filtering stirs a period of time at 105 DEG C, until being taken out after constant weight, that is, is stripped of institute in gutter oil
The free moisture contained.
(3) solid alkali process gutter oil
By the solid base prepared according to mass ratio (8-15)：100 are added in gutter oil, are sufficiently mixed stirring, and temperature is protected
It holds at 60-80 DEG C, processing time controls in 20-40min.
(4) separating, washing
By vacuum pump filtering, by treated, gutter oil is detached with solid base, and obtained processing oil makes to be washed with distilled water
It 1-3 times, may be reused after solid base after separation is washed.
The evaluation reference GB5530-2005 vegetable oil acid values determination methods of acid removal rate detect, acid removal rate ηACalculation formula
For：
Wherein A0For the acid value of waste grease before processing, A1For the acid value of waste grease after processing.
The ultraviolet absorptivity assay method of the evaluation reference GB/T 22500-2008 vegetable oil of percent of decolourization detects, and use is ultraviolet
The maximum absorption band of spectrophotometric determination waste grease is at 320nm wavelength.The measurement of absorbance refers to GB/T 22500-
The ultraviolet absorptivity assay method of 2008 vegetable oil detects, using hexamethylene as reference.Percent of decolourization ηBCalculation formula be：
Wherein B0For the absorbance of waste grease before processing, B1For the absorbance of waste grease after processing.
The evaluation criterion of free acid is acid value, just using acid removal rate as measurement standard after calculation processing, foreign pigment at
Divide complexity, but the content of impurity is to influence the absorbance of fixed substance, and impurity is fewer, absorbance is smaller, therefore with de-
Measurement standard of the color rate as foreign pigment removal effect.
Solid base disclosed by the invention is reusable, and processing method is as follows, and used solid base is washed through ethyl alcohol
Processing is washed, after 80 DEG C of heat dryings, it is that 12h is stirred at room temperature in 10%-30%NaOH solution that mass concentration, which is added, is filtered,
It is taken out after 105-110 DEG C of dry 3h.
The beneficial effects of the invention are as follows：
(1) characteristic for the activated carbon and atlapulgite that solid base of the invention makes full use of, can adsorb not homopolarity simultaneously
Property, different size of impurity particle, to reach preferable decolorizing effect.
(2) traditional handicraft can only be handled respectively, and handled gutter oil using solid base, can reach same
When depickling decoloration effect, and it is with obvious effects, fully meet the raw material as follow-up deep processing, save technological process, subtract significantly
Few cost.
(3) processing method neutral oil yield of the invention is high, and depickling generates during decolourizing without apparent neat soap.Solid
Alkali can reuse, whole process of the invention more efficiently, economical, environmentally friendly (comparison of such as attached Fig. 1 and 2).
Description of the drawings
Attached drawing 1 is traditional gutter oil processing technological flow figure；
Attached drawing 2 is solid base processing technological flow figure of the present invention.
Specific implementation mode
The specific implementation mode of the present invention is as follows：
Embodiment 1
The basic preparation parameter of solid base #1 is：It is 60 parts to weigh quality of activated carbon number, and 40 parts of atlapulgite will be active
Charcoal is fully ground with atlapulgite mix after, 500 parts of dilute hydrochloric acid are added, are filtered after stirring 1h, with distilled water flushing to neutrality,
It is taken out after 105-110 DEG C of dry 2h, the activated carbon of gained and the prepared impregnation liquid of atlapulgite mixture addition is dense
Degree is that 12h is stirred at room temperature, filters to obtain solid base in 10%NaOH solution, places it in the interior 3h dry at 105-110 DEG C of baking oven
After take out, be put into drier it is cooling, it is spare.
By gutter oil #1 by filtering, distillation processing, solid residue and moisture are removed, 100kg is weighed and evaporates place by filtration
The solid base #1 of 15kg is added in the gutter oil of reason, and under temperature 70 C, stir process 30min is separated by filtration solid base and processing
After oil, 3 processing oil of water washing are used.
Table 1 is the parameter lookup table of gutter oil before and after the processing in embodiment 1
| Gutter oil before processing | Gutter oil after processing | Acid removal rate | |
| Acid value | 1.80mgKOH/g | 0.16mgKOH/g | 91.11% |
| Absorbance | 0.314 | 0.142 | 54.77% |
Embodiment 2
By gutter oil #2 by filtering, distillation processing, solid residue and moisture are removed, 100kg is weighed and evaporates place by filtration
The solid base #1 (being prepared in such as embodiment 1) of 15kg is added in the gutter oil of reason, under temperature 70 C, stir process 30min, and mistake
Filter separation solid base uses 3 processing oil of water washing with after processing oil.
Table 2 is the parameter lookup table of gutter oil before and after the processing in embodiment 2
| Gutter oil before processing | Gutter oil after processing | Acid removal rate | |
| Acid value | 27.20mgKOH/g | 3.56mgKOH/g | 86.91% |
| Absorbance | 0.434 | 0.257 | 41.01% |
Embodiment 3
The basic preparation parameter of solid base #2 is：Quality of activated carbon number is 65 parts, 35 parts of parts of atlapulgite, by activated carbon
It is fully ground with atlapulgite after mixing, 500 parts of dilute hydrochloric acid is added, filtered after stirring 1h, with distilled water flushing to neutrality,
It is taken out after 105-110 DEG C of dry 2h, the activated carbon of gained and the prepared impregnation liquid of atlapulgite mixture addition is dense
Degree is that 12h is stirred at room temperature in 20%NaOH solution, after filtering, takes out, puts after solid base is placed at 105-110 DEG C dry 3h
Enter cooling in drier, it is spare.
By gutter oil #2 by filtering, distillation processing, solid residue and moisture are removed, 100kg is weighed and evaporates place by filtration
The solid base #2 of 10kg is added in the gutter oil of reason, and at 80 DEG C of temperature, stir process 20min is separated by filtration solid base and processing
After oil, 3 processing oil of water washing are used.
Table 3 is the parameter lookup table of gutter oil before and after the processing in embodiment 3
| Gutter oil before processing | Gutter oil after processing | Acid removal rate | |
| Acid value | 27.20mgKOH/g | 0.82mgKOH/g | 96.98% |
| Absorbance | 0.434 | 0.215 | 50.46% |
Embodiment 4
The basic preparation parameter of solid base #3 is：Used solid base #1 (being prepared in such as embodiment 1) is washed through ethyl alcohol
Processing is washed, the activated carbon of gained and atlapulgite mixture are added and prepare after 80 DEG C of heat dryings by obtained solid mixture
In good a concentration of 10%NaOH solution of impregnation liquid, 12h is stirred at room temperature, filters to obtain solid base, place it in baking oven in
It is taken out after dry 3h at 105-110 DEG C, is put into cooling in drier, it is spare.
By gutter oil #1 by filtering, distillation processing, solid residue and moisture are removed, 100g is weighed and evaporates processing by filtration
Gutter oil, the solid base 3 of 15g is added, under temperature 60 C, stir process 40min, be separated by filtration solid base with processing oil
Afterwards, using 3 processing oil of water washing.
Table 4 is the parameter lookup table of gutter oil before and after the processing in embodiment 4
| Gutter oil before processing | Gutter oil after processing | Acid removal rate | |
| Acid value | 1.80mgKOH/g | 0.25mgKOH/g | 86.11% |
| Absorbance | 0.314 | 0.199 | 36.62% |
According to the preparation method and operating condition of 4 solid base of embodiment, solid base circulating repetition is used, below respectively to follow
The experimental result of ring number.
| Cycle-index | Acid removal rate | Percent of decolourization |
| 0 | 91.11 | 54.77 |
| 1 | 86.11 | 41.25 |
| 2 | 70.20 | 36.62 |
| 3 | 55.56 | 30.00 |
| 4 | 52.45 | 22.74 |
| 5 | 50.50. | 17.58 |
| 6 | 51.26 | 15.46 |
| 7 | 51.73 | 14.20 |
| 8 | 50.35 | 14.18 |
Above-described several embodiments are only to illustrate the technical solution of the invention and unrestricted, any to be familiar with this profession
Technical staff can utilize disclosed above technology contents make modifications or to change or modify the equivalent equivalent Example.But
It is every to be detached from technical solution of the present invention content, it is made to the above embodiment according to the technical essence of the invention any simply to repair
Change, such as changes solid base raw material types, ratio, dosage, impregnation liquid concentration, treatment temperature, the variation of processing time etc.
Or remodeling, still fall within the protection domain of technical solution of the present invention.
Claims (7)
1. a kind of solid base for gutter oil collaboration depickling decoloration, which is characterized in that the solid base is with activated carbon and work
Property carclazyte be raw material, according to the mass fraction, 55-70 parts of activated carbon, 30-45 parts of atlapulgite fills activated carbon and atlapulgite
After dividing ground and mixed, 500 parts of dilute hydrochloric acid are added, are filtered after stirring 1h, after distilled water flushing to neutrality, filter obtained solid,
It is taken out after 105-110 DEG C of dry 2h in an oven, mass concentration, which is added, with atlapulgite mixture in the activated carbon of gained is
Impregnation is carried out in the NaOH solution of 10%-30%, 12h is stirred at room temperature, and after filtering, filtering obtained solid is placed in 105-
It is taken out after dry 3h at 110 DEG C, is put into drier and cools down to get solid base.
2. a kind of method for realizing gutter oil collaboration depickling decoloration using solid base as described in claim 1, which is characterized in that
By solid base according to mass ratio (8-15)：100 are added in gutter oil, are sufficiently mixed stirring, 60-80 DEG C of temperature, processing time 20-
40min。
3. the method according to claim 2 for realizing gutter oil collaboration depickling decoloration using solid base, which is characterized in that
Further include pretreatment process before carrying out utilizing solid alkali process gutter oil, the pretreatment process is filtering and removing slag and steaming
Evaporate dehydration.
4. the method according to claim 2 for realizing gutter oil collaboration depickling decoloration using solid base, which is characterized in that
It carries out after utilizing solid alkali process gutter oil, further includes separating, washing.
5. the method according to claim 3 for realizing gutter oil collaboration depickling decoloration using solid base, which is characterized in that institute
The distillation dehydration condition stated is to be stirred at 105 DEG C.
6. the method according to claim 4 for realizing gutter oil collaboration depickling decoloration using solid base, which is characterized in that institute
The separating, washing stated is by the way of vacuum pump filtering.
7. a kind of processing method that solid base described in claim 1 is reused, which is characterized in that by used solid base
Through ethyl alcohol carrying out washing treatment, after 80 DEG C of heat dryings, it is to be stirred at room temperature in 10%-30%NaOH solution that mass concentration, which is added,
12h is filtered, and is taken out after 105-110 DEG C of dry 3h.
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| CN106883931A (en) * | 2015-12-15 | 2017-06-23 | 中粮集团有限公司 | A kind of method that depickling is carried out to grease |
| CN107384587A (en) * | 2017-09-21 | 2017-11-24 | 武汉市农业科学技术研究院林业果树科学研究所 | A kind of acid stripping method of cold press peony seed oil |
| CN108485810A (en) * | 2018-04-11 | 2018-09-04 | 安徽德运粮油有限公司 | The ultrasonic wave auxiliary refining method of one vegetable oil |
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