CN113122387B - Grease decoloring and plasticizer removing method - Google Patents
Grease decoloring and plasticizer removing method Download PDFInfo
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- CN113122387B CN113122387B CN201911390963.6A CN201911390963A CN113122387B CN 113122387 B CN113122387 B CN 113122387B CN 201911390963 A CN201911390963 A CN 201911390963A CN 113122387 B CN113122387 B CN 113122387B
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- Prior art keywords
- polyethylene glycol
- oil
- grease
- alkylphenyl ether
- alkyl
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- 239000004519 grease Substances 0.000 title claims abstract description 104
- 239000004014 plasticizer Substances 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 53
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 81
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 80
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 57
- 125000005037 alkyl phenyl group Chemical group 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 85
- -1 alkylphenyl ether Chemical compound 0.000 claims description 47
- 229920004890 Triton X-100 Polymers 0.000 claims description 27
- 239000013504 Triton X-100 Substances 0.000 claims description 27
- 238000004042 decolorization Methods 0.000 claims description 23
- 125000000217 alkyl group Chemical group 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- IDOQDZANRZQBTP-UHFFFAOYSA-N 2-[2-(2,4,4-trimethylpentan-2-yl)phenoxy]ethanol Chemical compound CC(C)(C)CC(C)(C)C1=CC=CC=C1OCCO IDOQDZANRZQBTP-UHFFFAOYSA-N 0.000 claims description 16
- 229920004929 Triton X-114 Polymers 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 239000003925 fat Substances 0.000 claims description 13
- ZPIRTVJRHUMMOI-UHFFFAOYSA-N octoxybenzene Chemical compound CCCCCCCCOC1=CC=CC=C1 ZPIRTVJRHUMMOI-UHFFFAOYSA-N 0.000 claims description 10
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 8
- 238000009874 alkali refining Methods 0.000 claims description 6
- 235000014593 oils and fats Nutrition 0.000 claims description 6
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 5
- 230000001877 deodorizing effect Effects 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000013019 agitation Methods 0.000 claims 1
- 235000019198 oils Nutrition 0.000 description 72
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 44
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 42
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 description 40
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 29
- FBSAITBEAPNWJG-UHFFFAOYSA-N dimethyl phthalate Natural products CC(=O)OC1=CC=CC=C1OC(C)=O FBSAITBEAPNWJG-UHFFFAOYSA-N 0.000 description 20
- 229960001826 dimethylphthalate Drugs 0.000 description 20
- 230000000694 effects Effects 0.000 description 15
- 238000001179 sorption measurement Methods 0.000 description 13
- GPRLSGONYQIRFK-MNYXATJNSA-N triton Chemical compound [3H+] GPRLSGONYQIRFK-MNYXATJNSA-N 0.000 description 10
- 235000019197 fats Nutrition 0.000 description 8
- 235000015112 vegetable and seed oil Nutrition 0.000 description 8
- 239000010779 crude oil Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 235000012424 soybean oil Nutrition 0.000 description 6
- 239000003549 soybean oil Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000004332 deodorization Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 235000019483 Peanut oil Nutrition 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000312 peanut oil Substances 0.000 description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 4
- 229920005990 polystyrene resin Polymers 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229920003132 hydroxypropyl methylcellulose phthalate Polymers 0.000 description 3
- 229940031704 hydroxypropyl methylcellulose phthalate Drugs 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 125000005498 phthalate group Chemical class 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000003760 tallow Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 239000012496 blank sample Substances 0.000 description 2
- 235000019868 cocoa butter Nutrition 0.000 description 2
- 229940110456 cocoa butter Drugs 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 238000001914 filtration Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000000944 linseed oil Substances 0.000 description 2
- 235000021388 linseed oil Nutrition 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- ZIIUUSVHCHPIQD-UHFFFAOYSA-N 2,4,6-trimethyl-N-[3-(trifluoromethyl)phenyl]benzenesulfonamide Chemical compound CC1=CC(C)=CC(C)=C1S(=O)(=O)NC1=CC=CC(C(F)(F)F)=C1 ZIIUUSVHCHPIQD-UHFFFAOYSA-N 0.000 description 1
- 235000019489 Almond oil Nutrition 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 235000007542 Cichorium intybus Nutrition 0.000 description 1
- 244000298479 Cichorium intybus Species 0.000 description 1
- 241001481833 Coryphaena hippurus Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000287828 Gallus gallus Species 0.000 description 1
- 235000019487 Hazelnut oil Nutrition 0.000 description 1
- 240000000950 Hippophae rhamnoides Species 0.000 description 1
- 235000003145 Hippophae rhamnoides Nutrition 0.000 description 1
- 101100083853 Homo sapiens POU2F3 gene Proteins 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 235000007688 Lycopersicon esculentum Nutrition 0.000 description 1
- 235000018330 Macadamia integrifolia Nutrition 0.000 description 1
- 235000003800 Macadamia tetraphylla Nutrition 0.000 description 1
- 240000000912 Macadamia tetraphylla Species 0.000 description 1
- 229920000715 Mucilage Polymers 0.000 description 1
- 241000219925 Oenothera Species 0.000 description 1
- 235000004496 Oenothera biennis Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 101100058850 Oryza sativa subsp. japonica CYP78A11 gene Proteins 0.000 description 1
- 241000237502 Ostreidae Species 0.000 description 1
- 101150059175 PLA1 gene Proteins 0.000 description 1
- 102100026466 POU domain, class 2, transcription factor 3 Human genes 0.000 description 1
- 235000010678 Paulownia tomentosa Nutrition 0.000 description 1
- 240000002834 Paulownia tomentosa Species 0.000 description 1
- 102000015439 Phospholipases Human genes 0.000 description 1
- 108010064785 Phospholipases Proteins 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 235000019774 Rice Bran oil Nutrition 0.000 description 1
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- 229920000263 Rubber seed oil Polymers 0.000 description 1
- 235000003434 Sesamum indicum Nutrition 0.000 description 1
- 244000000231 Sesamum indicum Species 0.000 description 1
- 240000003768 Solanum lycopersicum Species 0.000 description 1
- 235000019498 Walnut oil Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000008168 almond oil Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000010495 camellia oil Substances 0.000 description 1
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- 238000006555 catalytic reaction Methods 0.000 description 1
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- 235000019864 coconut oil Nutrition 0.000 description 1
- 239000003240 coconut oil Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 235000012343 cottonseed oil Nutrition 0.000 description 1
- 239000002385 cottonseed oil Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 230000002124 endocrine Effects 0.000 description 1
- 230000001076 estrogenic effect Effects 0.000 description 1
- 238000002481 ethanol extraction Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 235000021323 fish oil Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 235000021588 free fatty acids Nutrition 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008169 grapeseed oil Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 239000010468 hazelnut oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000010466 nut oil Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 235000020636 oyster Nutrition 0.000 description 1
- 239000003346 palm kernel oil Substances 0.000 description 1
- 235000019865 palm kernel oil Nutrition 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 239000001335 perilla frutescens leaf extract Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 150000003904 phospholipids Chemical class 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical class OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 229920002523 polyethylene Glycol 1000 Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000008171 pumpkin seed oil Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000008165 rice bran oil Substances 0.000 description 1
- 239000003813 safflower oil Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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- 239000004032 superbase Substances 0.000 description 1
- 150000007525 superbases Chemical class 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 235000019871 vegetable fat Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000008170 walnut oil Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000010698 whale oil Substances 0.000 description 1
- 239000010497 wheat germ oil Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
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
- C11B3/10—Refining fats or fatty oils by adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/262—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. obtained by polycondensation
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention relates to a grease decoloring and plasticizer removing method, which comprises the step of contacting polyethylene glycol alkyl phenyl ether with grease. The method can not only decolorize the grease at low temperature, but also remove the plasticizer in the grease; and the shelf life of the grease is improved while the quality of the grease is maintained.
Description
Technical Field
The invention relates to a method for decoloring grease and removing a plasticizer.
Background
Adsorption decolorization can remove pigments in grease and other pollutants in the grease, but adsorption decolorization is often carried out at a higher temperature.
At present, the grease decolorization process is usually carried out at about 100 ℃, and the peroxide value in the grease is increased at high temperature to damage the quality of the grease, so that decolorization is carried out at low temperature to preserve the nutrients in the grease, and the aim of improving the quality and the shelf life of the grease is particularly important.
Phthalate is a kind of estrogen-like pollutant, and can interfere with human endocrine. Among the phthalates, dimethyl phthalate (DMP), dibutyl phthalate (DBP) and di (2-ethylhexyl) phthalate (DEHP) are the three most common and commonly used phthalate plasticizers.
Dimethyl phthalate, chemical formula C 10H10O4, molecular weight 194. Dimethyl phthalate is a colorless transparent yellowish oily liquid, and can be mixed with ethanol and diethyl ether organic solvents to be insoluble in water.
Dibutyl phthalate, having a chemical formula of C 16H22O4 and a molecular weight of 278. Dibutyl phthalate is a colorless oily liquid, has flammability, and has an aromatic odor. Can be mutually dissolved with organic solvents such as ethanol, diethyl ether, acetone, benzene and the like, and has a solubility of 0.04 percent (25 ℃) in water.
Di (2-ethylhexyl) phthalate, having a formula of C 24H38O4, and a molecular weight of 390. Bis (2-ethylhexyl) phthalate is a colorless transparent liquid, has a special odor, is soluble in most organic solvents and hydrocarbons, and is slightly soluble in glycerol and ethylene glycol. The solubility in water is <0.1% (25 ℃).
All three plasticizers have good solubility in grease, and plastic containers used in grease transportation, plastic oil pipelines in grease production, soil in raw material planting places and the like can cause pollution of phthalate.
The phthalate esters can cause great harm to human body, and the maximum detected amounts of di (2-ethylhexyl) phthalate (DEHP) and dibutyl phthalate (DBP) required in foods and food additives are respectively 1.5mg/kg and 0.3mg/kg. The current reports on phthalate removal have focused on contaminant removal in environmental waters, with physical methods such as removal by adsorption (Journal of Hazardous Materials 273 (2014) 61-69); in addition to physical methods, chemical methods are commonly employed to remove plasticizers from ambient water (APPLIED CATALYSIS B: environmental 174-175 (2015) 277-292). The most effective way to remove the plasticizer from the grease is solvent extraction, which has high removal efficiency, but the solvent is too much used in the removal process, and the solvent used for extraction is volatile, and the process of multiple extractions is not suitable for large-scale industrial production, so that it is necessary to find a suitable substance to be used in the conventional grease refining process to remove the plasticizer from the grease.
Disclosure of Invention
The invention provides a method for decoloring grease and/or removing plasticizers in the grease, which comprises the step of contacting the grease with polyethylene glycol alkyl phenyl ether.
In one or more embodiments, the polyethylene glycol alkylphenyl ether has a degree of polymerization of the polyethylene glycol segment of between 10 and 20.
In one or more embodiments, the polyethylene glycol alkylphenyl ether wherein the alkyl group is a branched or straight chain C 6-20 alkyl group.
In one or more embodiments, in the polyethylene glycol alkylphenyl ether, the polyethylene glycol segment is ortho, meta, or para to the benzene ring with the alkyl segment, preferably in the para position.
In one or more embodiments, the polyethylene glycol alkylphenyl ether is polyethylene glycol octylphenyl ether.
In one or more embodiments, the polyethylene glycol octylphenyl ether is selected from the group consisting of Triton X-100 and Triton X-114.
In one or more embodiments, the polyethylene glycol alkylphenyl ether is used in an amount of greater than 10% by weight of the oil, such as at least 20%, or at least 1 times the weight of the oil.
In one or more embodiments, the polyethylene glycol alkylphenyl ether is contacted with the grease for a period of at least 30 minutes.
In one or more embodiments, the contacting is performed at a temperature ranging from room temperature to 200 ℃.
In one or more embodiments, the contacting is performed with stirring, preferably at a stirring speed of 50 to 5000rpm.
In one or more embodiments, the grease is isolated after the contact is completed.
The present invention also provides a process for refining oils, comprising the oil decolorization step of any of the embodiments of the present invention, and one or more of the degumming, physical deacidification, alkali refining, water washing, drying, conventional decolorization, dewaxing, and deodorization steps.
The invention also comprises the application of the polyethylene glycol alkyl phenyl ether in grease decolorization and/or plasticizer removal, or the application in preparing a reagent for grease decolorization and/or plasticizer removal.
In one or more embodiments, the polyethylene glycol alkylphenyl ether has a degree of polymerization of the polyethylene glycol segment of between 10 and 20.
In one or more embodiments, the polyethylene glycol alkylphenyl ether wherein the alkyl group is a branched or straight chain C 6-20 alkyl group.
In one or more embodiments, in the polyethylene glycol alkylphenyl ether, the polyethylene glycol segment is ortho, meta, or para to the benzene ring with the alkyl segment, preferably in the para position.
In one or more embodiments, the polyethylene glycol alkylphenyl ether is polyethylene glycol octylphenyl ether.
In one or more embodiments, the polyethylene glycol octylphenyl ether is selected from the group consisting of Triton X-100 and Triton X-114.
Detailed Description
Various aspects of the invention are described in detail below. The various starting materials of the present invention may be obtained commercially, or prepared according to methods conventional in the art, unless specifically indicated. Unless defined or otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Any method and materials similar or equivalent to those described can be used in the methods of the present invention.
All features such as values, amounts, and concentrations that are defined herein in the numerical or percent ranges are for brevity and convenience only. Accordingly, the description of a numerical range or percentage range should be considered to cover and specifically disclose all possible sub-ranges and individual values (including integers and fractions) within the range.
Herein, unless otherwise specified, the percentage means weight percentage, and the ratio is mass ratio.
In this context, not all possible combinations of the individual technical features in the individual embodiments or examples are described in order to simplify the description. Accordingly, as long as there is no contradiction between the combinations of these technical features, any combination of the technical features in the respective embodiments or examples is possible, and all possible combinations should be considered as being within the scope of the present specification.
The invention discovers that the adsorption material with specific groups can not only decolorize the grease at low temperature, but also remove the plasticizer in the grease; the shelf life of the grease is improved while the quality of the grease is maintained; in addition, the decoloring technology at normal temperature can also reduce the energy consumption in the grease production process.
The adsorption material used in the invention is polyethylene glycol alkyl phenyl ether. Preferably, in the polyethylene glycol alkylphenyl ether of the present invention, the degree of polymerization of the polyethylene glycol segment is between 10 and 20. Preferably, the alkyl groups in the polyethylene glycol alkylphenyl ethers of the invention are branched or straight chain C 6-20 alkyl groups including, but not limited to, hexyl, heptyl, octyl, such as 1, 3-tetramethylbutyl, and the like, with straight or branched chain C 6-12 alkyl groups being preferred. In the polyethylene glycol alkylphenyl ether of the present invention, the polyethylene glycol segment and the alkyl segment may be in ortho, meta and para positions of the benzene ring, preferably in para positions. In a preferred embodiment, the polyethylene glycol alkylphenyl ether used in the present invention is polyethylene glycol octylphenyl ether. The invention may be practiced using commercially available polyethylene glycol octylphenyl ether, such as Triton X-100 and/or Triton X-114.
The method of the present invention comprises the step of contacting polyethylene glycol alkylphenyl ether with grease. In the present invention, the grease may be various types of grease known in the art, particularly edible oil, including animal grease and vegetable grease. Exemplary vegetable fats include, but are not limited to, any mixture of one or more of rice oil, sunflower seed oil, palm kernel oil, peanut oil, canola oil (also known as rapeseed oil), cottonseed oil, safflower seed oil, perilla seed oil, tea seed oil, palm fruit oil, coconut oil, olive oil, cocoa butter, tallow seed oil, almond oil, tung seed oil, rubber seed oil, rice bran oil, corn germ oil, wheat germ oil, sesame seed oil, castor seed oil, linseed oil, evening primrose seed oil, hazelnut oil, walnut oil, grape seed oil, linseed oil, glass chicory seed oil, sea buckthorn seed oil, tomato seed oil, pumpkin seed oil, macadamia nut oil, cocoa butter, algae oil, and the like. Exemplary animal fats and oils may be any mixture of one or more of beef tallow, lard, mutton tallow, chicken fat, fish oil, seal oil, whale oil, dolphin oil, oyster oil, etc. The grease may be a variety of grease that requires decolorization and/or removal of plasticizers. The grease may be crude oil or grease subjected to one or more of the conventional grease refining processes, for example, degummed, decolorized or deodorized oil. In some embodiments, the grease may be refined oil, i.e., finished oil.
In the process of the invention, the polyethylene glycol alkylphenyl ether is used in an amount of more than 10% by weight of the oil, for example at least 20%, or at least 1 times the weight of the oil. The present invention has found that when the grease is treated with polyethylene glycol alkylphenyl ether at 1 or more times the weight of the oil, the plasticizer in the grease can be removed by 40% or more even at room temperature.
In the process of the present invention, the temperature of the system comprising polyethylene glycol alkylphenyl ether and grease during contact is typically in the range of room temperature to 200 ℃. Room temperature is generally referred to herein as the room temperature above 20 ℃, such as 20-35 ℃. In some embodiments, the system temperature is preferably 25-170 ℃, more preferably 25-135 ℃. Different contact temperatures may be chosen for different purposes. For example, in some embodiments, for decolorizing purposes, the contacting is performed at a temperature of 20-50 ℃ under which a portion of the plasticizer may also be removed; in other embodiments, to achieve substantial or even complete removal of the plasticizer, higher system temperatures may be controlled, e.g., the system temperature may be 120-170 ℃, at which point dimethyl phthalate (DMP) may be substantially removed.
Accordingly, in some embodiments, the present invention provides a method of decolorizing grease comprising the step of contacting the grease to be decolorized with a polyethylene glycol alkylphenyl ether as described herein at room temperature. In other embodiments, the present invention provides a method for removing plasticizers from fats & oils comprising the step of contacting the fats & oils with a polyethylene glycol alkylphenyl ether described herein at a temperature of 20 to 200 ℃. In still other embodiments, the present invention provides a method for decolorizing grease and removing plasticizers comprising the step of contacting the grease to be decolorized with a polyethylene glycol alkylphenyl ether as described herein at 20 to 50 ℃.
The contacting may be accomplished by stirring. The rotational speed of the stirring may be in the range of 50-5000 rpm. The contact time is at least 30 minutes. The proper rotating speed and contact time can be adjusted according to the different dosage of the polyethylene glycol alkyl phenyl ether so as to obtain the best decoloring and/or plasticizer removing effect. As demonstrated by the examples herein, polyethylene glycol alkylphenyl ethers substantially achieved maximum adsorption after a contact time of up to 4 hours. Thus, the contact time can be controlled in the range of 30 minutes to 4 hours from the time cost point of view.
After the contact is finished, the adsorbent and impurities such as plasticizer and pigment adsorbed by the adsorbent can be removed by centrifugal separation, and the grease is obtained. The above-described contacting and separating steps may be performed one or more times until the desired effect is obtained. In a preferred embodiment, the contacting step is performed following a small number of passes.
In some embodiments, the present invention provides a fat refining process comprising a fat decolorization step as described herein and one or more steps selected from the group consisting of degumming, physical deacidification, alkali refining, water washing, drying, conventional decolorization, dewaxing, and deodorization. It will be appreciated that one or more of the degumming, deacidification, dewaxing and deodorization steps may be omitted depending on the actual production situation and purpose of production. The process conditions of degumming, physical deacidification, alkali refining, washing, drying, conventional decoloring, dewaxing and deodorizing can be conventional process conditions in the field and can be adjusted according to actual production conditions.
Exemplary degumming includes degumming the crude oil by adding a degumming medium after filtering the crude oil to remove solid impurities. The degumming medium may be a degumming medium conventional in the art, such as citric acid solution, phosphoric acid solution, and degumming enzyme. When degumming enzyme (such as PLA1 phospholipase) is used, the reaction system is generally at 45-80 ℃, the pH is 5-6, and the time is 2-6h. The degumming medium is not less than 0.05wt% of the weight of the crude oil, typically not more than 2wt% of the weight of the crude oil. When an acid is used, the concentration of the acid is not less than 5% by weight, usually not more than 80% by weight, for example, may be in the range of 5 to 65% by weight, 10 to 60% by weight, 20 to 50% by weight, based on the total weight of the solution. Water can be added at the same time, and the water content is usually not less than 0.5wt% of the weight of the crude oil; typically the amount of water used in the single degumming step, excluding water in the degumming medium, is not higher than 30wt% of the oil weight, e.g. in the range of 0.5 to 20wt%, 0.5 to 10wt%, 5 to 25 wt%. And separating colloid after the reaction is finished to obtain the degummed oil.
The degumming can be carried out after the deacidification, and the main purpose is to remove free fatty acid in crude oil and remove partial pigment, phospholipid, hydrocarbon, mucilage and other impurities. The deacidification may be performed using a physical deacidification method. For example, the degummed oil can be treated at a pressure of 0.02-0.6kPa and a temperature of 180-250 ℃ to provide a deacidified oil. Alternatively, the acid may be removed by alkali refining. For example, an appropriate amount of alkali solution is added to the degummed oil at 80-90 ℃ for reaction for 10-60 minutes. Typically, the amount of added base = 7.13 x 10 -4×M Oil (oil) x AV x (1+ amount of super base), which may be 0-20%, the amount of base = amount of added base/concentration of base, where M Oil (oil) refers to oil weight and AV refers to acid number. And centrifuging after the reaction is finished to obtain the neutralized oil.
The deacidified oil may be subjected to dewaxing. If the deacidification is performed by alkali refining, the deacidified oil (neutralized oil) may be dried in water before dewaxing the grease to perform the soap removal, thereby obtaining the soap-removed oil. For example, the neutralized oil may be heated to 80-90deg.C, washed with hot water having an oil weight of less than 5% (e.g., 1-3%) and centrifuged, and then vacuum dried at 90-120deg.C to obtain the soap-free oil.
An exemplary dewaxing process includes pumping deacidified oil or soap-free oil into a crystallization tank, controlling the temperature to 50-60 ℃, standing for 10-60min, and then starting cooling crystallization. Can be reduced to 2-6 ℃ within 10-60 hours, then the crystal is grown for 6-10 hours at the temperature, and the filtration is carried out after the crystal growth is finished.
In the present invention, the conventional decoloring method includes a step of decoloring under conventional decoloring conditions using a conventional decoloring agent. Conventional decolorizing agents include, but are not limited to, bleaching earth, activated clay, activated carbon, zeolite, attapulgite, diatomaceous earth, silica gel, and the like, as are well known in the art. . The decolorization temperature can be 100-120deg.C, preferably 105-115 deg.C; the addition amount of the decoloring agent can be 0.5% -5% of the mass of the grease, and is preferably 1% -5%. The vacuum degree for decoloring may be 20 to 100mbar, preferably 30 to 50mbar. The decolorizing time can be 20-120min, preferably 30-120min.
Exemplary deodorization methods are conventional in the art and specific procedures are well known to those skilled in the art, and may be, for example, but not limited to, the methods described in beret al, chemistry and technology (volume six), and the like. In one embodiment of the invention, the deodorization is: introducing nitrogen or steam (preferably high-temperature steam) as deodorizing medium, vacuum degree not higher than 25mBar, and deodorizing at 235-260deg.C for 40-90 min.
The invention also provides the use of the polyethylene glycol alkylphenyl ethers described herein in grease decolorization and/or plasticizer removal, or in the preparation of a reagent for grease decolorization and/or plasticizer removal.
Compared with the prior art, the invention can decolorize at normal temperature, can reduce the energy consumption of factories, retain beneficial components in the grease, prolong the shelf life of the grease, simultaneously remove the plasticizer in the grease, simplify the production process flow and finally improve the quality of the grease.
The invention will be illustrated by way of specific examples. It should be understood that these examples are illustrative only and are not intended to limit the scope of the invention. The raw materials adopt a mode of reversely adding DMP, DBP and DEHP, and the adding amount of the DMP and the DBP is about 10 ppm. In addition to the reverse-added finished oil, the oils used in the present invention also include oils obtained on the factory line with a plasticizer content exceeding that of the standard (DEHP content of 5-10 ppm). Detecting the contents of DMP, DBP and DEHP in the raw materials after the reverse addition, wherein the detection method is as follows: (GB 5009.271-2016). The color measurement refers to a method for measuring the color of GB/T22460-2008 Luowei.
Embodiment one: removal effect of different adsorption temperatures on DMP, DBP and DEHP
Refined soybean oil was taken and adsorbed with Triton X-100 at room temperature, 135 ℃ and 170 ℃ respectively as a plasticizer in the oil. And (3) vacuumizing at 135 ℃ and 170 ℃ without vacuumizing at room temperature, adding Triton X-100 accounting for 20% of the weight of the grease, stirring, maintaining the temperature and stirring speed for 1h, and centrifugally separating the system to obtain the clear oil without the plasticizer.
The removal rate of the plasticizer in the grease by Triton X-100 at different temperatures is shown in Table 1.
TABLE 1
| DMP | DBP | DEHP | |
| Room temperature | 30.70％ | 20.70％ | 19.05％ |
| 135℃ | 82.80％ | 24.52％ | 22.91％ |
| 170℃ | 100％ | 18.98％ | 17.66％ |
Embodiment two: effect of polyethylene glycol octyl phenyl ether of different isomers on removal of DMP, DBP and DEHP
Refined soybean oil was taken and the plasticizers in the oil were adsorbed at room temperature using Triton X-100 and Triton X-114. And (3) under the condition of room temperature, not vacuumizing, adding Triton X-100 and Triton X-114 accounting for 20% of the weight of the grease, stirring, maintaining the temperature and the stirring speed for 1h, and centrifugally separating the system to obtain the clear oil with the plasticizers removed.
The removal efficiency of the two polyethylene glycol octylphenyl ethers Triton X-100 and Triton X-114 for three plasticizers in grease at room temperature is shown in Table 2.
TABLE 2
| DMP | DBP | DEHP | |
| Triton X-100 | 30.70％ | 20.70％ | 19.05％ |
| Triton X-114 | 19.36％ | 18.36％ | 22.65％ |
Embodiment III: decolorization of fat by Triton
Refined soybean oil was decolorized with Triton X-100 and Triton X-100, and Triton X-100 were used in an amount of 20% by weight, respectively. Stirring for 1h at room temperature and 170 ℃ under vacuum, and centrifuging the system to obtain clear oil. The color of the oil was measured and the results are shown in Table 3.
TABLE 3 Table 3
| R | Y | |
| Blank sample | 17.8 | 22.0 |
| Triton X-100, room temperature | 11.6 | 70.0 |
| Triton X-100，170℃ | 20.0 | 40.0 |
Conclusion: as can be seen from Table 3, triton X-100 decolorizes the oil at room temperature, but does not decolorize the oil at high temperature, and the plasticizer in the oil is removed at the same time as the decolorization.
Embodiment four: adding a large amount of Triton to remove plasticizer in grease
Refined soybean oil was taken and subjected to plasticizer removal using Triton X-100 and Triton X-114, respectively, which were the same in weight as the oil. Stirring for 1h at room temperature, and centrifugally separating the system to obtain the clear oil with the plasticizer removed. The plasticizer removal effect is shown in table 4.
TABLE 4 Table 4
| DBP | DEHP | |
| Triton X-100 | 53.4％ | 44.2％ |
| Triton X-114 | 52.3％ | 43.5％ |
Conclusion: as is clear from Table 4, when Triton X-100 and Triton X-114 were added in large amounts, the plasticizers in the oils were removed by 40% or more at room temperature.
Fifth embodiment: removing plasticizer from grease by Triton under long-time adsorption condition
Refined soybean oil is taken, and Triton X-100 are respectively used for removing plasticizers in grease, wherein the dosage of the plasticizers is 20% of the weight of the oil. Stirring for 4 hours at room temperature, and centrifugally separating the system to obtain the clear oil with the plasticizer removed. The removal rate of the plasticizer in the grease is shown in table 5.
TABLE 5
| DBP | DEHP | |
| Triton X-100 | 19.76％ | 20.13％ |
| Triton X-114 | 20.22％ | 23.05％ |
Conclusion: as is clear from Table 5, when Triton X-100 and Triton X-114 were adsorbed for a long period of time (4 hours), the effect of removing the plasticizer from the grease was similar to the effect of short-time adsorption.
Example six: removal of plasticizers from peanut oil using Triton
Peanut oil is taken, and Triton X-100 are respectively used for removing plasticizers in grease, wherein the dosage of the plasticizers is 20% of the weight of the oil. Stirring for 1h at room temperature, and centrifugally separating the system to obtain the clear oil with the plasticizer removed. The removal rate of the plasticizer in the grease is shown in Table 6.
TABLE 6
| DBP | DEHP | |
| Triton X-100 | 24.54％ | 23.78％ |
| Triton X-114 | 19.44％ | 25.76％ |
Conclusion: as is clear from Table 6, triton X-100 and Triton X-114 showed a similar effect of removing plasticizers from oils and fats as compared with the effect of adsorbing them in a short period of time when treating peanut oil.
Comparative example one: substances with phthalate structures adsorb plasticizers in grease
And (3) adsorbing the plasticizer in the grease by using hydroxypropyl methyl cellulose phthalate (HPMCP), respectively adding HPMCP accounting for 10% of the oil weight into the grease at the temperature of 100 ℃ and 135 ℃, adsorbing for 2 hours under vacuum condition, and carrying out suction filtration to obtain the clear oil with the plasticizer removed. The removal rate of the plasticizer in the grease is shown in table 7.
TABLE 7
| DMP | DBP | DEHP | |
| HPMCP-100℃ | 17.09％ | 0％ | 0％ |
| HPMCP-135℃ | 67.82％ | 0.29％ | 0％ |
Conclusion: the adsorption material containing phthalate groups only has a certain removal effect on the small molecular plasticizers DMP in grease under the high temperature condition, and has almost no effect on the large molecular plasticizers DBP and DEHP. And the removal effect of the catalyst on DMP is not as good as that of polyethylene glycol octyl phenyl ether.
Comparative example two: polyethylene glycol for adsorbing plasticizer in grease
5.0G PEG1000 was weighed into a 150mL beaker, 20g water was added, 100g of soybean oil containing DEHP was added after heating and dissolving, shearing was performed at 13000rpm for 2min, 50g was taken out, and centrifugation at 3000rpm for 10min was performed, and sample analysis was performed. The removal rate of the plasticizer in the grease is shown in the following table 8.
TABLE 8
| DMP | DBP | DEHP | |
| PEG | 0.75％ | 0％ | 0％ |
Conclusion: polyethylene glycol does not remove plasticizers from the grease.
Comparative example three: polystyrene adsorbs plasticizers in grease
A certain amount of polystyrene resin was weighed and soaked in 95% ethanol for three days. After three days, ethanol is removed by suction filtration, and the treated resin is placed in a fume hood and air-dried for later use.
In the adsorption experiment, the adding amount of the polystyrene resin is 20% of the weight of oil, the adsorption temperature is 170 ℃ and the time is 2 hours. The removal rate of the plasticizer in the grease is shown in the following table 9:
TABLE 9
| DMP | DBP | DEHP | |
| 20% Polystyrene resin adsorption | NA | 28.24％ | 8.83％ |
Conclusion: the polystyrene resin contains a large amount of benzene ring groups, but the DEHP removal effect on the grease is only about 8%.
Comparative example four: ethanol decolorization and plasticizing agent
And (3) carrying out a plasticizer removal experiment by using ethanol with the weight of 50% of the oil, carrying out ultrasonic treatment at room temperature for 30min, standing until the mixture is layered, and removing the ethanol to obtain clear oil. The removal rate of the plasticizer in the grease is shown in the following table 10:
Table 10
| DMP | DBP | DEHP | |
| 50% Ethanol extraction | 53.80％ | 27.04％ | 10.55％ |
Conclusion: when the ethanol consumption is 50% of the oil weight, the ethanol can remove more than 50% of DMP in the grease, and the DBP removal rate is close to 30%, but the DEHP removal rate is only about 10%. Meanwhile, ethanol has strong volatility, and is difficult to industrially land.
Decolorizing with 50% ethanol at room temperature for 30min, standing for layering, and removing ethanol to obtain clear oil. The removal rate of the plasticizer from the grease is shown in the following table 11.
TABLE 11
| R | Y | |
| Blank sample | 17.8 | 22.0 |
| Ethanol at room temperature | 17.6 | 22.3 |
Conclusion: ethanol has no decoloring effect and only removes the plasticizer in the grease.
Comparative example five: removing plasticizer from grease by Triton water solution
Adding triton X-100 accounting for 1 percent of the weight of the grease and H 2 O accounting for 20 percent of the weight of the grease into the grease; in another group of experiments, after the grease is stirred at room temperature, adding NaCl into the mixture added with water, carrying out ultrasonic separation, and taking the upper half part of the grease; the mixture without water was centrifuged to obtain the upper part of the oil, and the plasticizer content and chromaticity were measured, respectively, and the plasticizer content in the oil was as shown in table 12 below:
Table 12
* ND represents not detected
Conclusion: after triton aqueous solution is added into the grease, stirring and centrifuging are carried out, the content of plasticizer in the obtained grease is not reduced, and the triton aqueous solution has no effect of removing the plasticizer in the grease.
The chromaticity test results are shown in table 13 below:
TABLE 13
| R | Y | |
| Grease and oil | 17.8 | 22.0 |
| Fat + triton + water | 17.5 | 23.3 |
Conclusion: the triton aqueous solution also had no decolorization to the oil.
The foregoing description is not intended to limit the scope of the invention, which is defined broadly in the claims, and any technical entity or method performed by any person, if exactly the same as the scope of the claims, or an equivalent, is to be considered as covered by the claims.
All documents mentioned in this disclosure are incorporated by reference in this disclosure as if each were individually incorporated by reference. Further, it is understood that various changes and modifications of the present application may be made by those skilled in the art after reading the above description of the application, and such equivalents are intended to fall within the scope of the application as defined in the appended claims.
Claims (19)
1. A method for decolorizing and/or removing plasticizers from fats and oils, said method comprising the step of contacting polyethylene glycol alkylphenyl ether with the fats and oils; wherein:
the dosage of the polyethylene glycol alkyl phenyl ether is more than 10 percent of the weight of the oil;
the degree of polymerization of the polyethylene glycol segment in the polyethylene glycol alkylphenyl ether is between 10 and 20;
The alkyl in the polyethylene glycol alkylphenyl ether is branched or straight-chain C 6-12 alkyl;
the contact temperature is 20-200 ℃;
The contact time is at least 30 minutes.
2. The method for decolorizing and/or removing plasticizers from oils and fats according to claim 1, wherein in the polyethylene glycol alkylphenyl ether, the polyethylene glycol segment and the alkyl segment are in ortho, meta or para positions on the benzene ring.
3. The method for decolorizing and/or removing plasticizers from oils and fats according to claim 2, wherein in the polyethylene glycol alkylphenyl ether, the polyethylene glycol segment and the alkyl segment are para to each other on the benzene ring.
4. The method for decolorizing and/or removing plasticizers from oils and fats according to claim 1, wherein the polyethylene glycol alkylphenyl ether is polyethylene glycol octylphenyl ether.
5. The method for decolorizing and/or removing plasticizers from oils and fats according to claim 4, wherein the polyethylene glycol alkylphenyl ether is Triton X-100 and/or Triton X-114.
6. A method of decolorizing and/or removing plasticizers from fats & oils according to claim 1, characterized in that said method comprises one or more of the following features:
(1) The amount of the polyethylene glycol alkylphenyl ether is at least 20% of the weight of the oil;
(2) The contacting is performed with stirring; and
(3) After the contact is finished, separating to obtain grease.
7. The method for decolorization of oil and/or removal of plasticizers from oil according to claim 6, wherein said polyethylene glycol alkylphenyl ether is used in an amount of at least one time the weight of the oil.
8. The method for decoloring and/or removing plasticizers from oils and fats according to claim 6, wherein the stirring speed is 50 to 5000rpm.
9. A method of decolorizing and/or removing plasticizers from fats & oils according to any of claims 6 to 8, characterized in that said contacting is performed at a temperature in the range of 20 to 50 ℃, or at room temperature, or at a temperature in the range of 120 to 170 ℃.
10. A fat refining process, characterized in that it comprises a decolorizing step and one or more steps selected from the group consisting of degumming, physical deacidification, alkali refining, water washing, drying, conventional decolorizing, dewaxing and deodorizing, wherein:
The decolorization comprises the step of contacting polyethylene glycol alkylphenyl ether with grease at a temperature of 20-50 ℃;
the contact time is at least 30 minutes;
the dosage of the polyethylene glycol alkyl phenyl ether is more than 10 percent of the weight of the oil;
the degree of polymerization of the polyethylene glycol segment in the polyethylene glycol alkylphenyl ether is between 10 and 20;
the alkyl in the polyethylene glycol alkylphenyl ether is branched or straight-chain C 6-12 alkyl.
11. The method of claim 10, wherein in the polyethylene glycol alkylphenyl ether, the polyethylene glycol segment is ortho, meta, or para to the benzene ring with the alkyl segment.
12. The method of claim 10, wherein in the polyethylene glycol alkylphenyl ether, the polyethylene glycol segment is para to the alkyl segment on the benzene ring.
13. The method of claim 10, wherein the polyethylene glycol alkylphenyl ether is polyethylene glycol octylphenyl ether.
14. The method of claim 13, wherein the polyethylene glycol alkylphenyl ether is Triton X-100 and/or Triton X-114.
15. The method of claim 10, wherein the method comprises one or more of the following features:
(1) The amount of the polyethylene glycol alkylphenyl ether is at least 20% of the weight of the oil;
(2) The contacting is performed with stirring;
(3) After the contact is finished, separating to obtain decolorized grease; and
(4) The conventional decolorization step is to decolorize the grease using a decolorizer.
16. The method of claim 15, wherein the polyethylene glycol alkylphenyl ether is used in an amount of at least 1 time the weight of the oil.
17. The method of claim 15, wherein the agitation speed is 50-5000rpm.
18. Use of a polyethylene glycol alkylphenyl ether in grease decolorization and/or plasticizer removal, or in the preparation of a reagent for grease decolorization and/or plasticizer removal, said use comprising the step of contacting the polyethylene glycol alkylphenyl ether with grease; wherein:
the dosage of the polyethylene glycol alkyl phenyl ether is more than 10 percent of the weight of the oil;
the degree of polymerization of the polyethylene glycol segment in the polyethylene glycol alkylphenyl ether is between 10 and 20;
The alkyl in the polyethylene glycol alkylphenyl ether is branched or straight-chain C 6-12 alkyl;
the contact temperature is 20-200 ℃;
The contact time is at least 30 minutes.
19. The use according to claim 18, wherein the polyethylene glycol alkylphenyl ether is as defined in any one of claims 2 to 5.
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| CN105542951A (en) * | 2014-10-31 | 2016-05-04 | 中国科学院大连化学物理研究所 | Method for removing pigments from micro-algal oil |
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| CN104928023A (en) * | 2015-07-15 | 2015-09-23 | 山东三星玉米产业科技有限公司 | Corn oil soap-free refining process |
| CN106929150B (en) * | 2015-12-30 | 2020-11-10 | 丰益(上海)生物技术研发中心有限公司 | Deacidification, decolouration and refining process for oil |
| CN109880688A (en) * | 2017-12-06 | 2019-06-14 | 丰益(上海)生物技术研发中心有限公司 | The preparation method of low plasticiser or the grease without plasticiser |
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| CN105542951A (en) * | 2014-10-31 | 2016-05-04 | 中国科学院大连化学物理研究所 | Method for removing pigments from micro-algal oil |
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