CN102212414B - Biodiesel prepared from Idesia polycarpa var.vestita Diels oil and waste oil under alkali catalysis and preparation method thereof - Google Patents
Biodiesel prepared from Idesia polycarpa var.vestita Diels oil and waste oil under alkali catalysis and preparation method thereof Download PDFInfo
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- 239000002699 waste material Substances 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000003513 alkali Substances 0.000 title abstract description 7
- 238000006555 catalytic reaction Methods 0.000 title abstract description 7
- 241000538126 Idesia polycarpa var. vestita Species 0.000 title abstract 5
- 239000003225 biodiesel Substances 0.000 title abstract 5
- 238000002156 mixing Methods 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 22
- 239000007787 solid Substances 0.000 claims abstract description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000009874 alkali refining Methods 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims abstract description 4
- 239000002551 biofuel Substances 0.000 claims description 35
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 33
- 241001299699 Idesia Species 0.000 claims description 32
- 239000002585 base Substances 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 13
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 12
- 239000002283 diesel fuel Substances 0.000 claims description 12
- 230000036571 hydration Effects 0.000 claims description 12
- 238000006703 hydration reaction Methods 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 11
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 10
- 229910003023 Mg-Al Inorganic materials 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 235000011187 glycerol Nutrition 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- 235000017550 sodium carbonate Nutrition 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 114
- 235000019198 oils Nutrition 0.000 abstract description 114
- 239000002994 raw material Substances 0.000 abstract description 7
- 241001465754 Metazoa Species 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 239000010775 animal oil Substances 0.000 abstract 1
- 125000004185 ester group Chemical group 0.000 abstract 1
- 230000000887 hydrating effect Effects 0.000 abstract 1
- 235000015112 vegetable and seed oil Nutrition 0.000 abstract 1
- 239000008158 vegetable oil Substances 0.000 abstract 1
- 238000011161 development Methods 0.000 description 15
- 230000018109 developmental process Effects 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 12
- 239000000126 substance Substances 0.000 description 7
- 235000014593 oils and fats Nutrition 0.000 description 5
- 238000004821 distillation Methods 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 235000013311 vegetables Nutrition 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 238000005815 base catalysis Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000011949 solid catalyst Substances 0.000 description 3
- 244000036905 Benincasa cerifera Species 0.000 description 2
- 235000011274 Benincasa cerifera Nutrition 0.000 description 2
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 239000003925 fat Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000010503 gourd oil Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005809 transesterification reaction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 244000247747 Coptis groenlandica Species 0.000 description 1
- 235000002991 Coptis groenlandica Nutrition 0.000 description 1
- 240000006766 Cornus mas Species 0.000 description 1
- 244000147058 Derris elliptica Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 241001415765 Polycarpa Species 0.000 description 1
- 229920000263 Rubber seed oil Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 240000001866 Vernicia fordii Species 0.000 description 1
- 244000089698 Zanthoxylum simulans Species 0.000 description 1
- 235000009932 Zanthoxylum simulans Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 208000012839 conversion disease Diseases 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000000582 semen Anatomy 0.000 description 1
- 241000894007 species Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 238000004808 supercritical fluid chromatography Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Liquid Carbonaceous Fuels (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention discloses biodiesel prepared by performing ester exchange reaction on mixed oil prepared by mixing Idesia polycarpa var.vestita Diels oil and waste animal and vegetable oil in a certain ratio and low-carbon alcohol under catalysis of solid alkali serving as a catalyst. A preparation method of the biodiesel comprises the following process steps of: preparing the mixed oil; hydrating to degum; performing alkali refining to deacidify; decoloring; performing reaction under the catalysis of the solid alkali; and separating. The Idesia polycarpa var.vestita Diels with high yield in the high yield period and good oil quality is developed and utilized, so that the raw material cost is effectively reduced. However, the best method to solve the problem of low yield of the Idesia polycarpa var.vestita Diels in the initial period is that: the Idesia polycarpa var.vestita Diels oil is utilized unremittingly, so that planting area is enlarged by farmers, the effects of half the work with double results such as increasing farmer income and the like are achieved, and the waste oil is used for producing the biodiesel. The biodiesel prepared by the method has high recovery rate and low cost, improves the environment and products, and can reach the national standard.
Description
Technical field
The present invention relates to the preparation of Regeneratable biological diesel oil, particularly Idesia polycarpa oil and discarded vegetable and animals oils (be called for short: waste oil) the even mixing oil of preparation by a certain percentage, through catalyzed by solid base preparing biological diesel oil itself and preparation method.
Technical background
The diesel oil that uses in a large number at present belongs to non-renewable resource as the diesel oil of refining of petroleum, and its resource is more and more exhausted.In production, processing and the use procedure of this class diesel oil, the eubiosis of physical environment is being deposited immeasurable recessiveness and directly threat, become one of outstanding problem in the current global warming Greenhouse effect.It is extremely low that biofuel has sulphur content, and aromatic hydrocarbon content is few, and oxygen level is high, the characteristics that the waste gas effusion is few.The development biofuel is of value to preserves the ecological environment.The development and use biofuel meets the requirement of developing a circular economy with Sustainable development.The exploitation Wild oil plant is one of important topic of Science in Future in China Sustainable development.Because China is populous, should not use the edible fat production biofuel.So domestic universities and colleges, R﹠D institution, company and enterprise etc. have carried out one after another curcas oil, Zanthoxylum simulans oil, rubber seed oil, Oleum Gossypii semen, wilson dogwood oil, coptis root wood oil, seeds of a tung oil tree wet goods have been developed research.Find in the practice that also there is such or such problem in these species, as: yield poorly; Stock number is limited; Plantation is subjected to regional limits etc.Through relevant expert's estimation, China's its raw materials cost of development biofuel accounts for 70% of biofuel total cost, makes it to become a large bottleneck of biofuel industry development.Qin Dan, Liu Changgen in 2008 etc. are through the research and development of more than ten years to Idesia polycarpa, delivered " new way of Biomass Energy Development---Idesia polycarpa " in " the international renewable energy resources in Guangzhou scientific seminar ", introduced Prospect of R ﹠ D and the plantation situation of Idesia polycarpa.This project obtains national spark program (certificate number: meter is sent out [2004] No. 140 by state section).Successfully solve wild Idesia polycarpa difficulty and bred problem, big area breeding.The long root of Liu in 2004, Qin Dan etc. have declared national inventing patent (ZL200410081444.9).These provide solid foundation for developing Idesia polycarpa and then production biofuel.
In December, 2010, National Ministry of Finance, the State Tax Administration dispatch a joint document " about to utilizing discarded vegetable and animals oils to produce the notice of giving birth to pure thing diesel oil exempt from consumption tax ".Its purpose is exactly for the vegetable and animals oils that effectively prevents from discarding " backflow " dining table, is conducive to food safety.Simultaneously also for promoting the biofuel industry development to seek available Breeds resources.
The production method of biofuel.Mainly being chemical catalysis at present, secondly is catalyzed by biological enzyme and supercritical fluid method.Chemical catalysis production biofuel be with chemical substance as catalyzer, such as strong acid-sulfuric acid, highly basic-sodium hydroxide, potassium hydroxide, sodium methylate etc., the transesterification reaction of catalysis animals and plants fat and short chain alcohol.Chemical method production biofuel method is simple, and the grease transformation efficiency is higher, can reach about 90%, and the reaction times is shorter, can finish reaction in 4～6 hours, easily realizes suitability for industrialized production.At present, the method for suitability for industrialized production biofuel adopts chemical method more, but there is very large drawback in chemical method production biofuel, requires further improvement, perfect.
In order to improve the deficiency in the chemical catalysis, produced the method for solid catalyst.The investigator mainly concentrates on the development of solid catalyst and using.The use of solid catalyst can reduce the product separation difficulty greatly, and can reuse, and reduces spent acid or waste lye to the pollution of environment, and catalyzer and product separation ratio are easier to, and reaction conversion ratio is higher, and the process of producing of biofuel is comparatively simple.
With Idesia polycarpa oil preparation biofuel, declare have three of patent at present: " a kind of water white gourd oil prepares the method for biofuel " of Xibei Univ. of Agricultural ﹠ Forest Science ﹠ Technology, (ZL20061015380.0) its method was the standby biofuel of base-catalyzed transesterification legal system; Great " method that is prepared biofuel by the water white gourd oil " of Chu (ZL200610042737.5) its method is under the base catalysis condition, stirs and carries out esterification in 30～60 minutes; (application number: 200810046195.8), its method is catalyzed by solid base to " method for preparing biofuel with catalyzed by solid base Idesia polycarpa oil " of Song Hang etc.The common ground of above three patents all is the simple wild Idesia polycarpa oil of base catalysis.The actual state of China's Idesia polycarpa development: fundamentally, one or two enterprise few in number effort through more than ten years is arranged, implemented larger area plantation Idesia polycarpa, the Idesia polycarpa of also just having accomplished the part artificial culture tries flower, bears fruit, and also needs certain time but will reach mass-producing; Have, do raw material by wild Idesia polycarpa oil fully, neither reality is also unrealistic.
Summary of the invention
The objective of the invention is to do for overcoming the present Idesia polycarpa oil wild or a little artificial culture of above-mentioned dependence the defective of preparing biological diesel oil, take to utilize the mixed mixing oil preparing biological diesel oil of waste oils and fats and existing crude vegetal, not only can solve insufficient raw material, also reduce raw materials cost.Also improve simultaneously environmental quality.It namely is the mixing oil production biofuel of preparing by a certain percentage with catalyzed by solid base Idesia polycarpa oil and waste oils and fats.This is according to the DEVELOPMENT PROSPECT amount of Idesia polycarpa oil and discarded vegetable and animals oils generation, and a kind of method that bottleneck problem appears in the current development biofuel that is conducive to promote to solve is provided.Because general enterprise development rule take kind of plant as raw material is mostly: raw material output does not increase, and just can not use; Can not use, the peasant just can not be sold; The peasant is no longer plantation just, and output does not just increase forever yet.Unique method is exactly: only have the product that under any circumstance can purchase the peasant, could transfer peasant's enthusiasm.Production biofuel of the present invention comes compensating hair leaf idesia oil not enough with waste oils and fats, also effectively prevents simultaneously its backflow dining table, is conducive to food safety and promotes the Idesia polycarpa industry development.Also solved underproduce problem of the Idesia polycarpa early stage of development.Like this, more can transfer the plantation enthusiasm of vast farmers, impel the peasant to satisfy the demand by establishing in large scale traditional oil tree Idesia polycarpa, make it obtain high economic benefit and do not occupy cultivated land again, be conducive to solve well the agriculture, rural areas and farmers problem.Reduce especially the production cost of biofuel from the source, promote the Sustainable development of biofuel industry.
Technical scheme of the present invention is that Idesia polycarpa oil evenly is mixed and made into mixing oil catalyzed by solid base preparing biological diesel oil in proportion with waste oils and fats.Described Idesia polycarpa oil and waste oils and fats ratio are 1: 0.01--1: 4.
Described Idesia polycarpa oil and the moving mixing oil of planting oil of discarding, hereinafter to be referred as: mixing oil or oil; Idesia polycarpa oil is called for short: crude oil; The discarded moving oil of planting is called for short: waste oil.
With Idesia polycarpa oil and waste oil even mixed mixing oil in proportion, through processing step and the condition of preparing biological diesel oil catalyzed by solid base:
(1) preparation mixing oil: with Idesia polycarpa oil, waste oil in proportion: evenly mix at 1: 0.01--1: 4;
(2) hydration degum; Mixing oil is heated to 65-80 ℃, add the heavy 6-8% of mixing oil with the synthermal water of oil phase, carry out hydration degum 40-50mim;
(3) alkali-refining deacidification: the mixing oil after will coming unstuck carries out after drying dewaters, heating and control oil temperature are at 60-80 ℃, and the heavy 6-8% concentration of the lower adding of stirring mixing oil is that sodium hydroxide (or potassium hydroxide or yellow soda ash) solution of 18-20% carries out alkali-refining deacidification 45-60min;
(4) decolouring: the oil behind the alkali refining adds the also pre-atlapulgites prior to 160 ℃ of activation 1.5-2.5h of oily heavy 6-7%, decolouring 40-55min under 70-85 ℃;
(5) catalyzed by solid base reaction: (alcohol, molar equivalent are 5.5: 1-10: 1) to add low-carbon alcohol in the bleached oil, catalyzer (Mg-Al composite oxides) weight is that the heavy 1.5-3% of oil adds in oil, the pure mixed solution, and temperature is controlled at and stirs 3-5h (low-carbon alcohol is methyl alcohol, ethanol or Virahol) under the 70-80 ℃ of condition;
(6) separate: reclaim low-carbon alcohol, Mg-Al composite oxides, glycerine and biofuel.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail; but it must be noted that following examples can not understand limiting the scope of the invention, some nonessential improvement that the person skilled in the art of this area makes according to content of the present invention or adjust and then still belong to protection domain of the present invention.
Embodiment one
(1) mixing oil: with Idesia polycarpa oil, waste oil in proportion: 1: 3.5 preparation mixing oil 60.2g;
(2) hydration degum: the heavy 60.2g of mixing oil is heated to 75 ℃, add mixing oil weight 6% and the synthermal water of oil phase, carry out hydration degum 45mim;
(3) alkali-refining deacidification: the oil after will coming unstuck carries out after drying dewaters, heating also the control oil temperature at 75 ℃, stir lower add oil heavy 6%, concentration is that 20% sodium hydroxide solution carries out alkali-refining deacidification 50min;
(4) decolouring: the oil behind the alkali refining is at 70 ℃ of lower mixing oil heavy 6% and pre-atlapulgite prior to 160 ℃ of lower activation 1.5h, decolouring 40min of adding;
(5) catalyzed by solid base reaction: after bleached oil and the 9.12g methyl alcohol (molar ratio of methanol to oil: 6: 1) of 37.28g mixed, add again the solid alkali (Mg-Al composite oxides) by the mixing oil weight 2% after the decolouring, be controlled at 70 ℃ of temperature condition lower magnetic forces in temperature and stir, reaction 3h;
(6) separate: after reaction finished, the unreacted methyl alcohol of Distillation recovery isolated that catalyzer is renewable to be reused, and then filtrate is poured into standing demix in the separating funnel.The upper strata is biofuel, and lower floor is glycerin layer.This example biofuel yield 83.3%.
Embodiment two
(1) mixing oil: with Idesia polycarpa oil, waste oil in proportion: 1: 0.01 preparation mixing oil 104.25g;
(2) hydration degum: the mixing oil of 104.25g under 70 ℃ of conditions, is added oil and weighs 7% equal temperature water, carry out hydration degum 40min;
(3) alkali-refining deacidification: the mixing oil drying after will coming unstuck dewaters, and heats and controls to 75 ℃, under agitation adds 7% of mixing oil, and concentration is that 18% potassium hydroxide solution carries out alkali-refining deacidification 45min;
(4) decolouring: the mixing oil behind the alkali refining adds the activated decoloration 50min that mixing oil weighs 7% (and in advance prior to 160 ℃ of lower activation 1.5h) under 75 ℃;
(5) catalyzed by solid base reaction: with the mixing oil after the 52.55g decolouring and 12.35g methyl alcohol (alcohol. molar equivalent: 6: 1) mix after, the solid alkali (Mg-Al composite oxides) that adds again weight of oil 3.0%, temperature is controlled at 70 ℃ of temperature condition lower magnetic forces and stirs, reaction 4h.
(6) separate: after reaction finished, the unreacted methyl alcohol of Distillation recovery isolated that catalyzer is renewable to be reused, and then filtrate is poured into standing demix in the separating funnel.The upper strata is biofuel, and lower floor is glycerine.This example biofuel yield 84.3%.
Embodiment three
(1) mixing oil: with Idesia polycarpa oil, waste oil in proportion: 1: 0.1 preparation mixing oil 81.55g.
(2) hydration degum; Mixing oil 81.55g is heated to 70 ℃, add 6% and the synthermal water of oil phase of mixing oil weight, carry out hydration degum 45mim.
(3) alkali-refining deacidification; Oil after will coming unstuck carries out after drying dewaters, heating also the control oil temperature at 75 ℃, stir lower add oil heavy 6%, concentration is that 18% sodium carbonate solution carries out alkali-refining deacidification 45min.
(4) decolouring; Mixing oil behind the alkali refining adds mixing oil heavy 6% and pre-activated decoloration 40min prior to 160 ℃ of lower activation 1.5h under 75 ℃.
(5) catalyzed by solid base reaction: with the 51.28g bleached oil with after 12.05g methyl alcohol (molar ratio of methanol to oil: 5.5: 1) mixes, add again the solid alkali (Mg-Al composite oxides) of pressing weight of oil 2%, be controlled under 75 ℃ of temperature condition magnetic agitation reaction 2h in temperature.
(6) separate: after reaction finished, the unreacted methyl alcohol of Distillation recovery was isolated catalyst regeneration and is reused, and then filtrate is poured into standing demix in the separating funnel.The upper strata is biofuel, and lower floor is glycerine.This example biofuel yield 84.1%.
Embodiment four
(1) preparation mixing oil: with Idesia polycarpa oil, waste oil in proportion: 1: 1.5 preparation mixing oil 86.88g;
(2) hydration degum: the heavy 86.88g of mixing oil is heated to 70 ℃, add mixing oil weigh 6% with the synthermal water of oil phase, carry out hydration degum 45mim;
(3) alkali-refining deacidification: the oil after will coming unstuck carries out after drying dewaters, heating also the control oil temperature at 65 ℃, stir lower add oil heavy 6%, concentration is that 20% sodium carbonate solution carries out alkali-refining deacidification 40min;
(4) decolouring: the oil behind the alkali refining weighs 6% and pre-atlapulgite prior to 160 ℃ of lower activation 1.5h, decolouring 40min at 70 ℃ of lower mixing oils that add;
(5) catalyzed by solid base reaction: after bleached oil and the 31.76g ethanol (molar ratio of methanol to oil: 9: 1) of 61.63g mixed, add by the mixing oil after the decolouring again and weigh 2.5% solid alkali (Mg-Al composite oxides), be controlled at 80 ℃ of temperature condition lower magnetic forces in temperature and stir, reaction 3h;
(6) separate: after reaction finished, the unreacted ethanol of Distillation recovery isolated that catalyzer is renewable to be reused, and then filtrate is poured into standing demix in the separating funnel.The upper strata is biofuel, and lower floor is glycerin layer.This example biofuel yield 84.3%.
Claims (1)
1. one kind is mixed in proportion method through preparing biological diesel oil catalyzed by solid base with Idesia polycarpa oil and waste oil, and the method processing step is as follows:
(1) preparation mixing oil: with Idesia polycarpa oil and waste oil in 1: 0.01--1: 4 ratios are evenly mixed;
(2) hydration degum; Mixing oil is heated to 65-80 ℃, add the heavy 6-8% of mixing oil with the synthermal water of oil phase, carry out hydration degum 40-50mim;
(3) alkali-refining deacidification: the mixing oil after will coming unstuck carries out after drying dewaters, heating and control oil temperature are at 60-80 ℃, and any solution carries out alkali-refining deacidification 45-60min in the sodium hydroxide that the lower concentration that adds the heavy 6-8% of mixing oil of stirring is 18-20% or potassium hydroxide or the yellow soda ash;
(4) decolouring: the oil behind the alkali refining adds the also pre-atlapulgite prior to 160 ℃ of lower activation 1.5-2.5h of oily heavy 6-7%, decolouring 40-55min under 70-85 ℃;
(5) catalyzed by solid base reaction: add alcohol, molar equivalent 5.5: 1-10 in the bleached oil: 1 low-carbon alcohol, heavily be that the heavy 1.5-3% of oil adds in oil, the pure mixed solution with solid base catalyst Mg-Al composite oxides, temperature is controlled under the 70-80 ℃ of condition and stirs 3-5h; Described low-carbon alcohol is any in methyl alcohol, ethanol or the Virahol;
(6) separate: reclaim low-carbon alcohol, solid base catalyst Mg-Al composite oxides, glycerine and biofuel.
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| CN106244337A (en) * | 2016-08-03 | 2016-12-21 | 佛山市盈合电力燃料有限公司 | A kind of biodiesel for car use |
| CN108795578A (en) * | 2018-07-06 | 2018-11-13 | 扬州工业职业技术学院 | A method of utilizing catalyzed by solid base preparing biodiesel by ester exchange |
| CN109880696A (en) * | 2019-03-04 | 2019-06-14 | 扬州中天利新材料股份有限公司 | A method of biodiesel is prepared using waste grease |
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| CN101358141A (en) * | 2008-09-28 | 2009-02-04 | 四川省国政生物质能源科技发展股份有限公司 | Method for preparing bio diesel oil by idesia polycarpa maxim. var. vestita diels oil catalysis using solid base as catalyst |
| CN101608131A (en) * | 2008-06-20 | 2009-12-23 | 华东理工大学 | A kind of biodiesel oil preparing process of no byproduct glycerol |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101608131A (en) * | 2008-06-20 | 2009-12-23 | 华东理工大学 | A kind of biodiesel oil preparing process of no byproduct glycerol |
| CN101358141A (en) * | 2008-09-28 | 2009-02-04 | 四川省国政生物质能源科技发展股份有限公司 | Method for preparing bio diesel oil by idesia polycarpa maxim. var. vestita diels oil catalysis using solid base as catalyst |
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