CN113322130A - Purification treatment method for applying kitchen waste oil to non-edible oil industry - Google Patents

Purification treatment method for applying kitchen waste oil to non-edible oil industry Download PDF

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Publication number
CN113322130A
CN113322130A CN202110451190.9A CN202110451190A CN113322130A CN 113322130 A CN113322130 A CN 113322130A CN 202110451190 A CN202110451190 A CN 202110451190A CN 113322130 A CN113322130 A CN 113322130A
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oil
kitchen waste
waste oil
treatment method
purification treatment
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郭林明
郭铭忠
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Hangzhou Zhihuajie Technology Co ltd
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Hangzhou Zhihuajie Technology Co ltd
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Priority to CN202110451190.9A priority Critical patent/CN113322130A/en
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    • 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
    • C11B13/00—Recovery of fats, fatty oils or fatty acids from waste materials
    • 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
    • C11B3/008—Refining fats or fatty oils by filtration, e.g. including ultra filtration, dialysis
    • 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
    • C11B3/10—Refining fats or fatty oils by adsorption
    • 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
    • C11B3/16—Refining fats or fatty oils by mechanical means
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Microbiology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The invention provides a purification treatment method for applying kitchen waste oil to the non-edible oil industry, which sequentially comprises the steps of separating impurities, heating and standing, filtering the impurities and separating oil from water, wherein a chromatography step is arranged after the oil-water separation step; in the chromatography step, the oil obtained in the oil-water separation step is subjected to column chromatography to obtain raw oil for the non-edible oil industry. The purification treatment method can treat the kitchen waste oil into raw oil with good performance and no impurities, and finally the purification treatment method uses active alumina to carry out chromatography on the oil, so that pigment and tiny impurities can be adsorbed, and the raw oil with higher oil purity and better appearance performance can be obtained.

Description

Purification treatment method for applying kitchen waste oil to non-edible oil industry
Technical Field
The invention belongs to the technical field of purification of kitchen waste oil, and particularly relates to a purification treatment method for applying kitchen waste oil to the non-edible oil industry.
Background
In the catering industry, a large amount of oily wastewater is discharged, and most of sewers of catering enterprises are provided with oil-separating facilities which are recovered by regular or irregular personnel; the recovered kitchen waste oil contains a large amount of impurities and moisture, and can be used as raw materials of biodiesel and oil chemical plants only by purification treatment and removal of the impurities and the moisture.
At present, most of purification methods of kitchen waste oil adopt a small workshop type decoction method, the processing quality is high, the purity is low, the surrounding environment is seriously polluted, the environment of a working place is severe, the implementation difficulty is high in the existing production process, the purification method is not suitable for large-scale industrial production, and the purification efficiency is not very high. In addition, the purified grease in the prior art has low purity and poor appearance performance, so that the grease can be used only by one-step treatment.
Disclosure of Invention
The invention aims to solve the problem of providing a purification treatment method for applying kitchen waste oil to the non-edible oil industry, the kitchen waste oil can be processed into raw oil with good performance and no impurities through the purification treatment method, and finally activated alumina is used for carrying out chromatography on the oil in the purification treatment method, so that pigment and micro impurities can be adsorbed, and the raw oil with higher oil purity and better appearance performance can be obtained.
In order to solve the technical problems, the invention adopts the technical scheme that: a purification treatment method for applying kitchen waste oil to the non-edible oil industry sequentially comprises the steps of separating impurities, heating and standing, filtering the impurities and separating oil from water, wherein a chromatography step is arranged after the oil-water separation step; in the chromatography step, the oil obtained in the oil-water separation step is subjected to column chromatography to obtain raw oil for the non-edible oil industry.
Furthermore, in the chromatography step, the filler in the chromatographic column in the column chromatography is activated alumina.
The invention unexpectedly discovers that the purity of the final oil can be improved by carrying out chromatography on the oil by using the activated alumina, and simultaneously, the pigment and the tiny impurities in the oil can be removed, so that the appearance performance of the final product is good.
Further, the activated alumina is gamma crystalline phase alumina.
The invention discovers that for the existing activated alumina, the gamma crystalline phase alumina can further improve the chromatography effect, thereby ensuring the purity and performance of the final product raw oil.
Furthermore, the content of the activated alumina is more than or equal to 99.8 percent, and the ignition loss is 3.0 to 4.0 percent.
Further, the active alumina has a pore volume of 0.32ml/g-0.45ml/g and a specific surface of 200m2/g-250m2The particle size per gram is 150 +/-50 (the particle size is 74-150 mu m).
Further, the step of separating impurities sequentially comprises cleaning, separating slag and primary filtering; the cleaning and slag separation are specifically realized by separating solid wastes from the kitchen waste oil through a slag separation device; the primary filtration specifically is to filter the kitchen waste oil through a 20-mesh filter bag to separate out waste oil concentrated solution.
Further, the heating and standing step specifically comprises the steps of adding acid water into the primarily filtered kitchen waste oil, heating and mixing to sufficiently acidify the kitchen waste oil, standing for precipitation liquid separation after acidification, separating the kitchen waste oil into upper-layer oil, middle-layer sewage and lower-layer sediment, and extracting the upper-layer oil for next treatment.
Further, the step of filtering impurities is specifically to send the extracted upper layer grease into a filter, and filter out impurities to obtain clear oil liquid.
Further, the oil-water separation step is to introduce clear oil liquid into an oil-water separator for oil-water separation to obtain grease and wastewater; wherein the wastewater is discharged into a sewage treatment station, the wastewater is discharged after reaching the standard after treatment, and the grease is subjected to next chromatography treatment.
The invention has the advantages and positive effects that:
1. according to the purification treatment method, chromatography is finally carried out, so that advanced treatment can be carried out on the kitchen waste oil, harmful substances in the kitchen waste oil are removed, and the raw oil which is higher in oil purity and can be used in the non-edible oil industry can be obtained.
2. The chromatography step in the purification treatment method of the invention adsorbs and removes pigments and harmful substances in the waste oil liquid, recovers the normal chromaticity of the oil liquid and maintains good appearance performance.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
Example 1:
a purification treatment method for applying kitchen waste oil to the non-edible oil industry comprises the following steps:
(1) separating impurities: firstly, cleaning and separating slag, and separating solid waste from kitchen waste oil through a slag separating device; and secondly, primary filtering, namely filtering the kitchen waste oil passing through the slag separation device by a filter bag of 20 meshes to separate out waste oil concentrated solution.
(2) Heating and standing: and (2) adding acid water into the concentrated waste oil liquid obtained in the step (1), heating to 50 ℃, mixing, fully acidifying, standing, precipitating, separating liquid, separating into upper-layer grease, middle-layer sewage and lower-layer sediment, and extracting the upper-layer grease.
(3) Filtering impurities: and (3) feeding the upper layer grease provided in the step (2) into a filter to filter out impurities to obtain clear oil liquid.
(4) Oil-water separation: introducing the clear oil liquid in the step (3) into an oil-water separator for oil-water separation to obtain grease and wastewater; wherein the wastewater is discharged into a sewage treatment station and is discharged after reaching the standard after being treated.
(5) Chromatography: and (4) carrying out column chromatography on the grease in the step (4) to obtain raw oil which can be used in the non-edible oil industry.
In this embodiment, the filler in the chromatographic column in step (5) is gamma-crystalline activated alumina.
Wherein the content of the activated alumina is 99.8 percent, and the ignition loss is 3.0 percent; the pore volume is 0.32ml/g, and the specific surface area is 200m2The particle size per gram is 100.
The oil purity of the final product raw oil in this example is 99.8%; the raw oil is transparent and clear, and has light yellow color.
Example 2:
a purification treatment method for applying kitchen waste oil to the non-edible oil industry comprises the following steps:
(1) separating impurities: firstly, cleaning and separating slag, and separating solid waste from kitchen waste oil through a slag separating device; and secondly, primary filtering, namely filtering the kitchen waste oil passing through the slag separation device by a filter bag of 20 meshes to separate out waste oil concentrated solution.
(2) Heating and standing: and (2) adding acid water into the concentrated waste oil liquid obtained in the step (1), heating to 50 ℃, mixing, fully acidifying, standing, precipitating, separating liquid, separating into upper-layer grease, middle-layer sewage and lower-layer sediment, and extracting the upper-layer grease.
(3) Filtering impurities: and (3) feeding the upper layer grease provided in the step (2) into a filter to filter out impurities to obtain clear oil liquid.
(4) Oil-water separation: introducing the clear oil liquid in the step (3) into an oil-water separator for oil-water separation to obtain grease and wastewater; wherein the wastewater is discharged into a sewage treatment station and is discharged after reaching the standard after being treated.
(5) Chromatography: and (4) carrying out column chromatography on the grease in the step (4) to obtain raw oil which can be used in the non-edible oil industry.
In this embodiment, the filler in the chromatographic column in step (5) is gamma-crystalline activated alumina.
Wherein the content of the activated alumina is 99.86 percent, and the ignition loss is 3.5 percent; the pore volume is 0.35ml/g, the specific surface area is 220m2The particle size mesh number is 150.
The oil purity of the final product raw oil in this example is 99.86%; the raw oil is transparent and clear, and has light yellow color.
Example 3:
a purification treatment method for applying kitchen waste oil to the non-edible oil industry comprises the following steps:
(1) separating impurities: firstly, cleaning and separating slag, and separating solid waste from kitchen waste oil through a slag separating device; and secondly, primary filtering, namely filtering the kitchen waste oil passing through the slag separation device by a filter bag of 20 meshes to separate out waste oil concentrated solution.
(2) Heating and standing: and (2) adding acid water into the concentrated waste oil liquid obtained in the step (1), heating to 50 ℃, mixing, fully acidifying, standing, precipitating, separating liquid, separating into upper-layer grease, middle-layer sewage and lower-layer sediment, and extracting the upper-layer grease.
(3) Filtering impurities: and (3) feeding the upper layer grease provided in the step (2) into a filter to filter out impurities to obtain clear oil liquid.
(4) Oil-water separation: introducing the clear oil liquid in the step (3) into an oil-water separator for oil-water separation to obtain grease and wastewater; wherein the wastewater is discharged into a sewage treatment station and is discharged after reaching the standard after being treated.
(5) Chromatography: and (4) carrying out column chromatography on the grease in the step (4) to obtain raw oil which can be used in the non-edible oil industry.
In this embodiment, the filler in the chromatographic column in step (5) is gamma-crystalline activated alumina.
Wherein the content of the activated alumina is 99.89 percent, and the ignition loss is 3.8 percent; the pore volume is 0.40ml/g, the specific surface area is 250m2(g) the particle size mesh number is 200.
The oil purity of the final product raw oil in this example is 99.92%; the raw oil is transparent and clear, and has light yellow color.
Example 4:
a purification treatment method for applying kitchen waste oil to the non-edible oil industry comprises the following steps:
(1) separating impurities: firstly, cleaning and separating slag, and separating solid waste from kitchen waste oil through a slag separating device; and secondly, primary filtering, namely filtering the kitchen waste oil passing through the slag separation device by a filter bag of 20 meshes to separate out waste oil concentrated solution.
(2) Heating and standing: and (2) adding acid water into the concentrated waste oil liquid obtained in the step (1), heating to 50 ℃, mixing, fully acidifying, standing, precipitating, separating liquid, separating into upper-layer grease, middle-layer sewage and lower-layer sediment, and extracting the upper-layer grease.
(3) Filtering impurities: and (3) feeding the upper layer grease provided in the step (2) into a filter to filter out impurities to obtain clear oil liquid.
(4) Oil-water separation: introducing the clear oil liquid in the step (3) into an oil-water separator for oil-water separation to obtain grease and wastewater; wherein the wastewater is discharged into a sewage treatment station and is discharged after reaching the standard after being treated.
(5) Chromatography: and (4) carrying out column chromatography on the grease in the step (4) to obtain raw oil which can be used in the non-edible oil industry.
In this embodiment, the filler in the chromatographic column in step (5) is gamma-crystalline activated alumina.
Wherein the content of the activated alumina is 99.94 percent, and the ignition loss is 4.0 percent; the pore volume is 0.45ml/g, the specific surface area is 250m2(g) the particle size mesh number is 200.
The oil purity of the final product raw oil in this example is 99.94%; the raw oil is transparent and clear, and has light yellow color.
Example 5:
a purification treatment method for applying kitchen waste oil to the non-edible oil industry comprises the following steps:
(1) separating impurities: firstly, cleaning and separating slag, and separating solid waste from kitchen waste oil through a slag separating device; and secondly, primary filtering, namely filtering the kitchen waste oil passing through the slag separation device by a filter bag of 20 meshes to separate out waste oil concentrated solution.
(2) Heating and standing: and (2) adding acid water into the concentrated waste oil liquid obtained in the step (1), heating to 50 ℃, mixing, fully acidifying, standing, precipitating, separating liquid, separating into upper-layer grease, middle-layer sewage and lower-layer sediment, and extracting the upper-layer grease.
(3) Filtering impurities: and (3) feeding the upper layer grease provided in the step (2) into a filter to filter out impurities to obtain clear oil liquid.
(4) Oil-water separation: introducing the clear oil liquid in the step (3) into an oil-water separator for oil-water separation to obtain grease and wastewater; wherein the wastewater is discharged into a sewage treatment station and is discharged after reaching the standard after being treated.
(5) Chromatography: and (4) carrying out column chromatography on the grease in the step (4) to obtain raw oil which can be used in the non-edible oil industry.
In this embodiment, the filler in the chromatographic column in step (5) is gamma-crystalline activated alumina.
Wherein the content of the activated alumina is 99.82 percent, and the ignition loss is 3.2 percent; the pore volume is 0.32ml/g, and the specific surface area is 224m2(g) the particle size mesh number is 200.
The oil purity of the final product raw oil in the embodiment is 99.85%; the raw oil is transparent and clear, has no suspended substances and has light yellow color.
Comparative example 1:
a purification treatment method for applying kitchen waste oil to the non-edible oil industry comprises the following steps:
(1) separating impurities: firstly, cleaning and separating slag, and separating solid waste from kitchen waste oil through a slag separating device; and secondly, primary filtering, namely filtering the kitchen waste oil passing through the slag separation device by a filter bag of 20 meshes to separate out waste oil concentrated solution.
(2) Heating and standing: and (2) adding acid water into the concentrated waste oil liquid obtained in the step (1), heating to 50 ℃, mixing, fully acidifying, standing, precipitating, separating liquid, separating into upper-layer grease, middle-layer sewage and lower-layer sediment, and extracting the upper-layer grease.
(3) Filtering impurities: and (3) feeding the upper layer grease provided in the step (2) into a filter to filter out impurities to obtain clear oil liquid.
(4) Oil-water separation: introducing the clear oil liquid in the step (3) into an oil-water separator for oil-water separation to obtain grease and wastewater; wherein the wastewater is discharged into a sewage treatment station and is discharged after reaching the standard after being treated.
In the final product of the embodiment, the purity of the grease is 90.68%; the color of the oil is dark yellow, and suspended matters can be seen with naked eyes.
Comparative example 2:
a purification treatment method for applying kitchen waste oil to the non-edible oil industry comprises the following steps:
(1) separating impurities: firstly, cleaning and separating slag, and separating solid waste from kitchen waste oil through a slag separating device; and secondly, primary filtering, namely filtering the kitchen waste oil passing through the slag separation device by a filter bag of 20 meshes to separate out waste oil concentrated solution.
(2) Heating and standing: and (2) adding acid water into the concentrated waste oil liquid obtained in the step (1), heating to 50 ℃, mixing, fully acidifying, standing, precipitating, separating liquid, separating into upper-layer grease, middle-layer sewage and lower-layer sediment, and extracting the upper-layer grease.
(3) Filtering impurities: and (3) feeding the upper layer grease provided in the step (2) into a filter to filter out impurities to obtain clear oil liquid.
(4) Oil-water separation: introducing the clear oil liquid in the step (3) into an oil-water separator for oil-water separation to obtain grease and wastewater; wherein the wastewater is discharged into a sewage treatment station and is discharged after reaching the standard after being treated.
(5) Chromatography: and (4) carrying out column chromatography on the grease in the step (4) to obtain raw oil which can be used in the non-edible oil industry.
In this embodiment, the filler in the chromatographic column in step (5) is activated alumina in the x-crystal phase.
Wherein the content of the activated alumina is 99.8 percent, and the ignition loss is 3.0 percent; the ratio table is 200m2The particle size per gram is 100.
The oil purity of the final product raw oil in the embodiment is 96.95%; the raw oil is transparent and clear, has no suspended substances and has light yellow color.
Comparing the raw oil of the product of 5 examples of the invention with the grease obtained in two examples shows that:
1. the purity of the grease in the product of the embodiment can reach more than 99 percent, the purity of the grease in the product of the comparative example 2 can reach more than 96 percent, and the purity of the grease in the product of the comparative example 1 is only 90 percent, so that the grease purity of the final product can be effectively improved by treating the kitchen waste oil by column chromatography; and as can be seen from the examples and comparative example 2, the appearance of the chromatographed oil is better, impurities and pigments are removed, and the quality of the final product is higher.
2. Comparing the example with the comparative example 2, it can be seen that the purity of the oil in the raw oil obtained by the purification treatment method of the present invention is high, more than 99%, and much higher than that of the oil in the product of the comparative example 2, and thus it can be seen that the gamma crystalline phase activated alumina is adopted as the filler of the chromatographic column for chromatography, the treatment effect is better, and purer raw oil can be obtained.
Test example 1:
the test is used for examining the influence of the content of the active alumina in the chromatographic column packing on the oil purity in the raw oil of a final product and the influence on the appearance performance of the raw oil after chromatography, wherein the preparation is carried out by adopting the same method as the example 1, only the content of the active alumina is changed, and the test results are shown in a table 1:
TABLE 1 data on the influence of different contents of activated alumina on the purity of the product oils and fats
Content of activated alumina Purity of oil and fat Appearance Properties of the finished oil
90％ 94.4％ Transparent, clear and light yellow
95％ 95.39％ Transparent, clear and light yellow
99％ 97.56％ Transparent, clear and light yellow
99.7％ 97.92％ Transparent, clear and light yellow
99.8％ 99.8％ Transparent, clear and light yellow
99.9％ 99.86％ Transparent, clear and light yellow
99.94％ 99.89％ Transparent, clear and light yellow
As is clear from the experimental data in table 1, the impurity pigments in the oils and fats can be removed by chromatography using activated alumina; however, only when the content of the activated alumina is more than 99.8 percent, the oil concentration of the final product raw oil can reach more than 99 percent, and the chromatographic effect is good, so the activated alumina filler with the actual alumina content more than or equal to 99.8 percent is preferably selected by the invention.
Test example 2:
the test is used for checking the influence of the ignition loss change of the activated alumina in the chromatographic column packing on the purity of oil in raw oil of a final product and the influence on the appearance performance of the raw oil after chromatography, the test is prepared by the method same as the example 1, only the ignition loss of the activated alumina is different, and the test results are shown in the table 2:
TABLE 2 influence of different loss on ignition of activated alumina on the purity of the product oil
Figure RE-GDA0003162983040000101
Figure RE-GDA0003162983040000111
As is clear from the experimental data in table 2, the impurity pigments in the oils and fats can be removed by chromatography using activated alumina; however, only when the loss on ignition of the activated alumina is between 3.0% and 4.0%, the oil concentration of the final product raw oil can reach more than 99%, the chromatographic effect is good, and when the loss on ignition is out of the range, the oil concentration of the final product is lower than 99%, so the activated alumina filler with the loss on ignition between 3.0% and 4.0% is preferred in the invention.
Test example 3:
the test is used for checking the influence of the pore volume of the active alumina in the chromatographic column packing on the purity of oil in the raw oil of a final product and the influence on the appearance performance of the raw oil after chromatography, the test is carried out by adopting the same method as the example 1, only the pore volume of the active alumina is changed, and the test result is shown in a table 3:
TABLE 3 data on the influence of the pore volume of activated alumina on the purity of the product oil
Pore volume (ml/g) Purity of oil and fat Appearance Properties of the finished oil
0.25 96.78％ Transparent, clear and light yellow
0.31 98.49％ Transparent, clear and light yellow
0.32 99.8％ Transparent, clear and light yellow
0.35 99.95％ Transparent, clear and light yellow
0.40 99.94％ Transparent, clear and light yellow
0.45 99.82％ Transparent, clear and light yellow
0.46 98.41％ Transparent, clear and light yellow
As is clear from the experimental data in table 3, the impurity pigments in the oils and fats can be removed by chromatography using activated alumina; however, only when the pore volume of the activated alumina is between 0.32ml/g and 0.45ml/g, the oil concentration of the final product raw oil can reach more than 99%, the chromatography effect is best, and when the pore volume is out of the range, the oil concentration of the final product is less than 99%, therefore, the activated alumina filler with the pore volume between 0.32ml/g and 0.45ml/g is preferred in the invention.
Experimental example 4:
the test is used for checking the influence of the specific surface area of the activated alumina in the chromatographic column packing on the oil purity in the raw oil of a final product and the influence on the appearance performance of the raw oil after chromatography, the preparation method is the same as the example 1, only the specific surface area of the activated alumina is changed, and the test results are shown in a table 4:
TABLE 4 influence of the specific surface area of activated alumina on the purity of the product oils
Scale (m)2/g) Purity of oil and fat Appearance Properties of the finished oil
150 96.49％ Transparent, clear and light yellow
190 98.51％ Transparent, clear and light yellow
200 99.8％ Transparent, clear and light yellow
210 99.85％ Transparent, clear and light yellow
225 99.95％ Transparent, clear and light yellow
250 99.92％ Transparent, clear and light yellow
260 98.04％ Transparent, clear and light yellow
As is clear from the experimental data in table 4, the impurity pigments in the oils and fats can be removed by chromatography using activated alumina; however, only when the specific surface area of the activated alumina is 200m2/g-250m2The oil concentration of the final product raw oil can reach more than 99 percent when the oil concentration is between the concentration and the g, the chromatography effect is best, and when the specific surface area of the activated alumina is out of the range, the oil concentration of the final product is lower than 99 percent, therefore, the specific surface area is preferably 200m2/g-250m2Between/g of activated alumina filler.
Experimental example 5:
the test is used for checking the influence of the particle size mesh number of the active alumina in the chromatographic column packing on the oil purity in the raw oil of a final product and the influence on the appearance performance of the raw oil after chromatography, the test is carried out by adopting the same method as the example 1, only the particle size mesh number of the active alumina is changed, and the test result is shown in table 5:
TABLE 5 data on the influence of particle size mesh of activated alumina on the purity of oil and fat in the product
Number of meshes of particle diameter Purity of oil and fat Appearance Properties of the finished oil
70 95.2％ Transparent, clear and light yellow
90 96.29％ Transparent, clear and light yellow
100 99.8％ Transparent, clear and light yellow
150 99.92％ Transparent, clear and light yellow
200 99.84％ Transparent, clear and light yellow
240 97.23％ Transparent, clear and light yellow
300 90.54％ Transparent, clear and light yellow
As is clear from the experimental data in table 5, the impurity pigments in the oils and fats can be removed by chromatography using activated alumina; however, only when the particle size mesh number of the activated alumina is between 100 and 200, the oil concentration of the final product raw oil can reach more than 99%, the chromatography effect is the best, and when the particle size mesh number is out of the range value, the oil concentration of the final product is lower than 99%, therefore, the activated alumina filler with the particle size mesh number of between 100 and 200 is preferred in the invention.
While specific embodiments of the present invention have been described in detail, the description is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (9)

1. The purification treatment method for applying the kitchen waste oil to the non-edible oil industry sequentially comprises the steps of impurity separation, heating and standing, impurity filtration and oil-water separation, and is characterized in that: a chromatography step is also arranged after the oil-water separation step;
in the chromatography step, the oil obtained in the oil-water separation step is subjected to column chromatography to obtain raw oil for the non-edible oil industry.
2. The purification treatment method for applying the kitchen waste oil to the non-edible oil industry according to the claim 1 is characterized in that: in the chromatography step, the filler in the chromatographic column in the column chromatography is activated alumina.
3. The purification treatment method for applying the kitchen waste oil to the non-edible oil industry according to the claim 2 is characterized in that: the active alumina is gamma crystalline phase alumina.
4. The purification treatment method for applying the kitchen waste oil to the non-edible oil industry according to the claim 3 is characterized in that: the content of the activated alumina is more than or equal to 99.8 percent, and the ignition loss is 3.0 to 4.0 percent.
5. The purification treatment method for applying the kitchen waste oil to the non-edible oil industry according to the claim 3 is characterized in that: the pore volume of the activated alumina is 0.32ml/g-0.45ml/g, and the specific surface area is 200m2/g-250m2The particle size per gram is 150 +/-50.
6. The purification treatment method for applying the kitchen waste oil to the non-edible oil industry according to the claim 1 is characterized in that: the step of separating impurities sequentially comprises cleaning, separating slag and primary filtering; the cleaning and slag separation are specifically realized by separating solid wastes from the kitchen waste oil through a slag separation device; the primary filtration specifically is to filter the kitchen waste oil through a 20-mesh filter bag to separate out waste oil concentrated solution.
7. The purification treatment method for applying the kitchen waste oil to the non-edible oil industry according to claim 6 is characterized in that: the heating and standing step specifically comprises the steps of adding acid water into the waste oil concentrated solution subjected to primary filtration, heating and mixing to fully acidify the waste oil concentrated solution, standing and precipitating for liquid separation after acidification, separating the acidified waste oil concentrated solution into upper-layer grease, middle-layer sewage and lower-layer sediment, and extracting the upper-layer grease for next treatment.
8. The purification treatment method for applying the kitchen waste oil to the non-edible oil industry according to claim 7 is characterized in that; and the step of filtering impurities specifically comprises the steps of feeding the extracted upper layer grease into a filter, and filtering out impurities to obtain clear oil liquid.
9. The purification treatment method for applying the kitchen waste oil to the non-edible oil industry according to claim 8 is characterized in that: the oil-water separation step is to introduce clear oil liquid into an oil-water separator for oil-water separation to obtain grease and wastewater; wherein the wastewater is discharged into a sewage treatment station, the wastewater is discharged after reaching the standard after treatment, and the grease is subjected to next chromatography treatment.
CN202110451190.9A 2021-04-25 2021-04-25 Purification treatment method for applying kitchen waste oil to non-edible oil industry Pending CN113322130A (en)

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US5972057A (en) * 1997-11-11 1999-10-26 Lonford Development Limited Method and apparatus for producing diesel fuel oil from waste edible oil
CN102952645A (en) * 2011-08-24 2013-03-06 江苏洁净环境科技有限公司 Industrial purification method for waste oil
CN103571630A (en) * 2012-07-23 2014-02-12 陕西德融新能源股份有限公司 Pre-treatment method used for preparing biodiesel from swill oil and trench oil
CN103771475A (en) * 2012-10-24 2014-05-07 中国石油化工股份有限公司 Preparation method of gamma-alumina powder
CN103771468A (en) * 2012-10-24 2014-05-07 中国石油化工股份有限公司 Preparation method of nano gamma-alumina powder
CN110184119A (en) * 2019-07-04 2019-08-30 河南科技大学 The removing impurities method and plant oil sample matrix of one vegetable oil
CN110586198A (en) * 2019-09-29 2019-12-20 武汉理工大学 Hierarchical porous macroporous-mesoporous gamma-Al2O3Catalyst carrier material and preparation method thereof
CN111057616A (en) * 2019-08-26 2020-04-24 易高生物化工科技(张家港)有限公司 Treatment method for removing impurities from waste animal and vegetable oil

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5972057A (en) * 1997-11-11 1999-10-26 Lonford Development Limited Method and apparatus for producing diesel fuel oil from waste edible oil
CN102952645A (en) * 2011-08-24 2013-03-06 江苏洁净环境科技有限公司 Industrial purification method for waste oil
CN103571630A (en) * 2012-07-23 2014-02-12 陕西德融新能源股份有限公司 Pre-treatment method used for preparing biodiesel from swill oil and trench oil
CN103771475A (en) * 2012-10-24 2014-05-07 中国石油化工股份有限公司 Preparation method of gamma-alumina powder
CN103771468A (en) * 2012-10-24 2014-05-07 中国石油化工股份有限公司 Preparation method of nano gamma-alumina powder
CN110184119A (en) * 2019-07-04 2019-08-30 河南科技大学 The removing impurities method and plant oil sample matrix of one vegetable oil
CN111057616A (en) * 2019-08-26 2020-04-24 易高生物化工科技(张家港)有限公司 Treatment method for removing impurities from waste animal and vegetable oil
CN110586198A (en) * 2019-09-29 2019-12-20 武汉理工大学 Hierarchical porous macroporous-mesoporous gamma-Al2O3Catalyst carrier material and preparation method thereof

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