CN101235314A - Biological diesel oil and preparation method thereof - Google Patents
Biological diesel oil and preparation method thereof Download PDFInfo
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- CN101235314A CN101235314A CNA2007100634079A CN200710063407A CN101235314A CN 101235314 A CN101235314 A CN 101235314A CN A2007100634079 A CNA2007100634079 A CN A2007100634079A CN 200710063407 A CN200710063407 A CN 200710063407A CN 101235314 A CN101235314 A CN 101235314A
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- grease
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- 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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P30/00—Technologies relating to oil refining and petrochemical industry
- Y02P30/20—Technologies relating to oil refining and petrochemical industry using bio-feedstock
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Abstract
The invention provides biological diesel oil, which comprises at least biological diesel oil A whose iodine number is no more than 90gI2g and at least a biological diesel oil B whose iodine number is more than 90gI2g, and the volume ratio of the biological diesel oil A and the biological diesel oil B is 1:0.05-20, and the optimization is 1:0.1-10. The biological diesel oil which is provided by the invention can utilizes biological diesel oil whose index such as oxidation stability, low-temperature fluidity and the like does not reach to the requirements of national standard to get biological diesel oil which meets national standard and is close to national standard through simple allocation, and can produce biological diesel oil which meets national standard and is close to national standard requirements after beforehand blending different glyceride stock. The biological diesel oil which is got by the invention can not only improve oxidation stability, but also improve biological diesel oil whose low-temperature fluidity is relatively smaller than original iodine number.
Description
Technical field
The invention belongs to biofuel, definite say so stability and all improved biofuel of low-temperature fluidity.
Technical background
Quickening along with vehicle diesel oil trend in the world wide, the demand of diesel oil can be more and more big, and the raising of exhausted day by day and people's environmental consciousness of petroleum resources, promoted countries in the world to accelerate the exploitation paces of diesel oil alternative fuel greatly, biofuel has been subjected to the attention of various countries with its superior environmental-protecting performance and recyclability.
The main component of said biofuel is a fatty acid ester of low-carbon alcohol, fatty acid methyl ester normally, generally by grease and low-carbon alcohol (as C
1～C
5Fatty Alcohol(C12-C14 and C12-C18)) obtains through transesterification reaction.
That biofuel has is renewable, cleaning and safety three big advantages, and China Agricultural Structure Adjustment, energy security and comprehensively treating ecological environment are had very great strategic importance.And China is a net import of oil state at present, and prospective oil is very limited again, and a large amount of Imported oils threaten to the energy security of China; Therefore, the research of biofuel and production have important practical sense to China.
Compare with petroleum diesel, biofuel has following incomparable performance: (1) has good environmental protection characteristic.Because sulphur content is low in the biofuel, makes that the discharging of sulfurous gas and sulfide is low, can reduce about 30% (being 70% when catalyzer is arranged); Do not contain the aromatic hydrocarbons that can pollute in the biofuel, thereby waste gas is lower than diesel oil to human body infringement to environment.According to the EPA report, biofuel can make HC reduction by 67% in the exhaust gas from diesel vehicle, and CO reduces by 48%, and PM reduces by 47%.Other detection shows, compares with petroleum diesel, uses biofuel can reduce by 90% air toxicity, reduces by 94% cancer rate; Because biofuel oxygen level height, smoke evacuation is lacked when making its burning, and the discharging of carbon monoxide is compared with diesel oil and reduced about 10% (being 95% when catalyzer is arranged); The biological degradability height of biofuel; (2) has lubricity preferably.Make the wear rate of oil injection pump, engine cylinder-body and connecting rod low, long service life; (3) has good safety performance.Because the flash-point height, biofuel does not belong to hazardous substance.Therefore, be conspicuous in the advantage aspect transportation, storage, the use; (4) cetane value height; (5) has renewable performance.The premium properties of biofuel makes and adopts the engine exhaust emission index of biofuel not only to satisfy present European II standard, even satisfies the strict more European III emission standard that is about to subsequently implement.And since the carbonic acid gas of biofuel when burning discharging far below the carbonic acid gas that is absorbed in the growing process, thereby improve since the Global warming that emission of carbon-dioxide causes this be harmful to the mankind's great environmental problem.Thereby biofuel is a kind of real green diesel.
But because raw material and complete processing, the oxidation stability of some biofuel is very poor, and the low-temperature fluidity of some biofuel is poor, and use, storage and the transportation of biofuel all caused very big difficulty.The biofuel of oxidation stability difference easily generates following ageing products: 1) insoluble polymer (colloid and greasy filth), and this can cause the engine filter screen to stop up and the squirt pump coking, and causes smoke evacuation to increase, start difficulty; 2) soluble polymer, it can form resinous substance in engine, may cause flame-out and the startup difficulty; 3) aging acid, this can cause the engine metal component corrosion; 4) superoxide, this can cause aging the becoming fragile of rubber components and cause fuel leakage etc.
Europe biodiesel for automobile standard EN 14214:2003, Australia's biofuel standard (Draft 2003), New Zealand biofuel standard NZS 7500:2005, Brazil biofuel standard A NP255 (2003), India biofuel standard I S 15607:2005, the new national standard of formulating that enters the declaration stage of South Africa biofuel standard SANS 1935:2004 and China " diesel-fuel blending with biofuel (BD100) " all oxidation stability of regulation biofuel is to be not less than 6 hours inductive phase under 110 ℃, and measuring method is EN14112:2003.
CN1742072A openly uses oxidation inhibitor 2, and 6-di-tert-butyl methyl phenol (BHT) improves the method for biofuel stability, dosage 0.005～2% (weight).
CN1847368A openly uses bisphenols oxidation inhibitor as 4,4`-methylene radical two [2,6 di t butyl phenol], 2, and 2`-methylene radical two [the 6-tertiary butyl-4-methylphenol] etc. improve the method for biofuel stability, dosage 0.001～2% (weight).
CN1847369A openly improves the method for biofuel stability, dosage 0.001～2% (weight) with induced by alkyl hydroxybenzene oxidation inhibitor.
Though more than the method for using traditional oxidation inhibitor to improve oxidation stability of biodiesel has certain effect, the cost of biofuel is increased, simultaneously, these oxidation inhibitor majorities are solid phase prod, use and the interpolation process in not easy to operate, some also need be made into mother liquor, has increased running cost.
US20060096159 openly handles coarse biodiesel to improve the stability of biofuel with strong acid such as sulfuric acid, corrodes and increased production cost but use present method that equipment is had.
Simultaneously, the flowing property of biofuel under cold condition, can not only be related to the diesel motor fuel plenum system at low temperatures normal fuel injection, and with operations such as at low temperatures storage of biofuel, transportation, loading and unloading substantial connection be arranged all.The low temperature flowability of biofuel also uses cloud point (CP), cold filter clogging temperature (CFPP), condensation point (SP)/pour point indexs such as (PP) to weigh.USS ASTM D6751 cloud point, the new biofuel national standard of formulating of China is identical with European standard, all require low-temperature fluidity, weigh low-temperature fluidity simultaneously with cold filter clogging temperature and condensation point in China's diesel oil standard with cold filter clogging temperature index expression biofuel.
US6409778 openly contains the multipolymer of methacrylic ester, and JP2005350629 openly contains the oligopolymer of acrylate and methacrylic ester and multipolymer as the biofuel FLOW IMPROVERS.Use additive to reduce the biofuel cold filter clogging temperature, have only additive effect when dosage is big just obvious to the biofuel that has, and can not reduce cold filter clogging temperature by adding agent to some biofuel, simultaneously, use the method for FLOW IMPROVERS also to increase cost and operation steps.
Summary of the invention
The present invention provides a kind of oxidation stability and low-temperature fluidity improved biofuel based on prior art.
The present invention also provides the preparation method of two kinds of biofuel.
Biofuel provided by the invention comprises at least a iodine number and is not more than 90gI
2The biofuel A of/g and at least a iodine number are greater than 90gI
2The biofuel B of/g, the volume ratio of biofuel A and B 1: 0.05～20, preferred 1: 0.1～10.
Said iodine number is not more than 90gI
2The biofuel A of/g includes but not limited at least aly be not more than 90gI by following iodine number
2The biofuel that the fat A of/g is produced: Oleum Cocois (iodine number 7～13gI
2/ g), palm kernel oil (iodine number 14～24gI
2/ g), plam oil (iodine number 40～60gI
2/ g), sweet oil (iodine number 76～90gI
2/ g), Viscotrol C (iodine number 82～88gI
2/ g), butter (iodine number 25～60gI
2/ g), sheep oil (iodine number 31～46gI
2/ g), lard (iodine number 46～70gI
2/ g), chicken fat (iodine number 55～77gI
2/ g) wait and composition thereof.
Said iodine number is greater than 90gI
2The biofuel B of/g includes but not limited at least by following a kind of iodine number greater than 90gI
2The biofuel that the grease B of/g produces: Oleum Gossypii semen (iodine number 99～121gI
2/ g), sesame oil (iodine number 104～118gI
2/ g), rapeseed oil (iodine number 110～130gI
2/ g), Semen Maydis oil (iodine number 110～118gI
2/ g), sunflower seed oil (iodine number 122～129gI
2/ g), soybean oil (iodine number 120～140gI
2/ g), safflower oil (iodine number 138～151gI
2/ g), rabbit oil (iodine number 102～107gI
2/ g), peanut oil (iodine number 91～97gI
2/ g), and linseed oil, Fructus Zanthoxyli oil, Oak Tree oil, Prunus amygdalus oil, walnut oil, Yatall MA (Tall Oil), curcas oil, tung oil, shinyleaf yellowhorn oil, coptis wood oil, kostelezkya virginica oil, cyperus esculentus wet goods.
The degree of unsaturation of grease or biofuel can be weighed with iodine number or iodine value index.The gram number of the iodine that iodine number is consumed when being defined as every 100g biofuel or grease and iodine generation addition reaction.Generally speaking, biofuel or greasy degree of unsaturation are big more, and its iodine number is also big more, and oxidation stability can be poor more.Need to prove that the iodine number of glyceride stock is essentially identical with iodine number by the biofuel of this grease production.
Above-named iodine number is not more than 90gI
2Contain monounsaturated fatty acids esters such as polyunsaturated fatty acid esters such as a large amount of palmitinic acids, stearic acid and oleic acid, ricinoleate acid in the grease of/g, the oxidation stability of the biofuel that is made by these greases is good and low-temperature fluidity is poor.And iodine number is greater than 90gI
2Generally contain esters of polyunsaturated fatty acids such as a large amount of linolic acid, linolenic acid in the grease of/g, poor by the oxidation stability of biodiesel that these grease reactions generate, but low-temperature fluidity is good.
Described grease has general sense well known in the art, is the general name of oil and fat, and main component is a fatty acid triglycercide.General normal temperature is the oil that is called of liquid, and normal temperature is solid or the semisolid fat (abbreviation fat) that is called.Described grease comprises vegetables oil and animal oil, in addition, also comprises from the oil plant in the materials such as microorganism, algae.Said vegetables oil can be that herbaceous plant oil also can be xylophyta oil, as the oil of peanut oil, Semen Maydis oil, Oleum Gossypii semen, rape seed oil, soybean oil, plam oil, Thistle oil, linseed oil, Oleum Cocois, Oak Tree oil, Prunus amygdalus oil, walnut oil, Viscotrol C, sesame oil, sweet oil, Yatall MA (Tall Oil), sunflower oil, curcas oil, tung oil, shinyleaf yellowhorn oil, coptis wood oil, halophytes such as plants such as kostelezkya virginica, cyperus esculentus.Said animal oil can be lard, chicken fat, duck oil, goose oil, sheep oil, house oil, butter, haco oil, shark wet goods.
Biofuel provided by the invention can prepare by following two kinds of methods at least:
First method:
Be not more than 90gI by at least a iodine number
2The biofuel A of/g and at least a iodine number are greater than 90gI
2/ g biofuel B according to volume ratio 1: 0.05～20, preferred 1: 0.1～10 concoct and form.
Second method:
At least a iodine number is not more than 90gI
2The fat A of/g and at least a iodine number are greater than 90gI
2The grease B of/g is with volume ratio 1: 0.05～20, and preferred 1: 0.1～10 mix the back obtains biofuel by transesterification reaction.
Said trans-esterification processes can be the processing method that any known or unknown transesterification reaction of passing through grease and low-carbon alcohol obtains biofuel, for example acid catalyzed process, base catalysis method, enzyme catalysis method, supercritical methanol technology, or the like.Specifically can be with reference to documents such as CN1473907A, DE3444893, CN1472280A, CN1142993C, CN1111591C, CN1594504A.
Also can add various additives as required in the biofuel that the present invention obtains, as FLOW IMPROVERS, oxidation inhibitor, detergent-dispersant additive, corrosion inhibitor, cetane number improver etc.
The oxidation stability of the biofuel that the present invention obtains can reach or near the requirement of biofuel standard, simultaneously, the biofuel that low-temperature fluidity is little with respect to former iodine number improves.
Biofuel provided by the invention can not be up to state standards that the biofuel that requires is met by simple allotment or near " diesel-fuel blending with biofuel (the BD100) " biofuel that national standard requires, can produce thing diesel oil by different glyceride stocks being concocted in advance back regeneration yet with indexs such as oxidation stability, low-temperature fluiditys.The invention process is easy, with low cost, and the practical application benefit is obvious.
Embodiment
In these embodiments, the analytical procedure of biofuel is carried out according to the method for stipulating in " diesel-fuel is concocted with biofuel (BD100) " national standard declaration original text, and for example oxidation stability is measured with the GB/T386 method with SH/T0248, cetane value with EN14112, cold filter clogging temperature.
Embodiment 1～2
Biofuel (the iodine number 84.5gI that the present embodiment explanation is produced with Viscotrol C
2/ biofuel (the iodine number 110.9gI that g) produces with Oleum Gossypii semen
2/ g) obtain the biofuel that oxidation stability and low-temperature fluidity all improve after the blending.Embodiment 1 is the biofuel that is formed with volume ratio blending in 1: 1 by ricinus oil biological diesel oil and Oleum Gossypii semen biofuel; Embodiment 2 is the biofuel that formed with volume ratio blending in 1: 0.5 by ricinus oil biological diesel oil and Oleum Gossypii semen biofuel.Its performance is as shown in table 1:
Table 1
By table 1 as seen, the oxidation stability of biodiesel that Viscotrol C is produced is good, but low-temperature fluidity is poor, and the oxidation stability of biodiesel that Oleum Gossypii semen is produced is poor, but low-temperature fluidity is good, the oxidation stability and the low-temperature fluidity of the embodiment 1 after the process blending and the biofuel of embodiment 2 correspondences improve simultaneously, reach the requirement of standard.Simultaneously also as can be seen, the biofuel water-content of Viscotrol C production, free glycerol content do not satisfy the fixed national standard requirement of new system yet, and the biofuel of Oleum Gossypii semen production also exceeds request of national standard on indexs such as 10% steaming excess carbon residue, acid number, oxidation stability, and satisfies request of national standard fully according to the biofuel of embodiments of the invention 1 and embodiment 2 correspondences.
Embodiment 3～5
Biofuel (the iodine number 49.6gI that the present embodiment explanation is produced with plam oil
2/ biofuel (the iodine number 109.8gI that g) produces with rapeseed oil
2/ g) obtain the biofuel that oxidation stability and low-temperature fluidity all improve after the blending.Embodiment 3 is the biofuel that formed with volume ratio blending in 1: 1 by plam oil biofuel and rapeseed oil biofuel; Embodiment 4 is the biofuel that formed with volume ratio blending in 1: 0.5 by plam oil biofuel and rapeseed oil biofuel; The biofuel that embodiment 5 plam oil biofuel and rapeseed oil biofuel form with volume ratio blending in 1: 2.Its performance is as shown in table 2:
By table 2 as seen, the oxidation stability of biodiesel that plam oil is produced is good, but low-temperature fluidity is poor, and the oxidation stability of biodiesel that rapeseed oil is produced is poor, but low-temperature fluidity is good, the oxidation stability and the low-temperature fluidity of embodiment 3, the embodiment 4 after the process blending and the biofuel of embodiment 5 correspondences improve simultaneously, reach the requirement of standard.Simultaneously also as can be seen, the biofuel water-content of plam oil production does not satisfy the fixed national standard requirement of new system, and the biofuel of rapeseed oil production also exceeds request of national standard on indexs such as 10% steaming excess carbon residue, acid number, oxidation stability, and the biofuel of embodiment 3, embodiment 4 and embodiment 5 correspondences satisfies request of national standard fully.
Table 2
Embodiment 6
Present embodiment is different glyceride stocks to be pre-mixed the back produce the biofuel that reaches standard-required with traditional base catalysis method (for example " colleges and universities' chemical engineering journal " 2004 18 2 phases of volume are gone up the condition shown in the article " preparation of biofuel ").
With plam oil (iodine number 47.5gI
2/ g) and soybean oil (iodine number 131.5gI
2/ g) according to after the volume ratio mixing in 2: 1, get the 60g mixing oil and put into three mouthfuls of reaction flasks of a 500mL, heated and stirred, add 45g methyl alcohol and 0.6gKOH, reacted 1 hour down at 50 ℃, pour out reactant, tell the glycerine that reaction generates, excessive methyl alcohol (recyclable utilization) is removed in distillation, be neutralized to neutrality with dilute hydrochloric acid, with distilled water flush away free glycerol, drying, obtain biofuel 49g by underpressure distillation again, it is as shown in table 3 to analyze its performance:
Table 3
| Project | Test method | Embodiment 6 |
| Density (20 ℃)/(kg/m 3) | GB/T2540 | 878.4 |
| Kinematic viscosity (40 ℃)/(mm 2/s) | GB/T265 | 4.542 |
| Flash-point (remaining silent)/℃ | GB/T261 | 148 |
| Cold filter clogging temperature/℃ | SH/T0248 | 5 |
| Sulphur content (massfraction)/% | SH/T0689 | 0.0034 |
| 10% steams excess carbon residue (massfraction)/% | GB/T17144 | 0.28 |
| Sulfated ash (massfraction)/% | GB/T2433 | ＜0.01 |
| Water-content (massfraction)/% | SH/T0246 | 0.046 |
| Mechanical impurity | GB/T511 | Do not have |
| Copper corrosion (50 ℃, 3h)/level | GB/T5096 | 1a |
| Cetane value | GB/T386 | 53.9 |
| Oxidation stability (110 ℃)/hour | EN14112 | 7.6 |
| Acid number/(mgKOH/g) | GB/T264 | 0.67 |
| Free glycerol content (massfraction)/% | ASTMD6584 | 0.013 |
| Total glycerol content (massfraction)/% | ASTMD6584 | 0.106 |
| 90% recovered temperature/℃ | GB/T6536 | 355.0 |
By table 3 as seen, the palmitic glyceride stock that contains with being pre-mixed utilizes the technology of existing production biofuel can produce the biofuel that satisfies national standard.
Embodiment 7
Biofuel (the iodine number 49.6gI that the present embodiment explanation is produced with plam oil
2/ biofuel (the iodine number 129.7gI that g) produces with soybean oil
2/ g) to obtain the biofuel that oxidation stability meets the demands after the volume ratio blending in 7: 1.
Be 0.5 hour the oxidation stability inductive phase (110 ℃) of the biofuel that this soybean oil is produced, and be 6.9 hours the oxidation stability inductive phase of embodiment 7 (110 ℃), reaches " diesel-fuel blending biofuel " request of national standard value.
Embodiment 8～9
Biofuel (the iodine number 84.5gI that the present embodiment explanation is produced with Viscotrol C
2/ biofuel (the iodine number 110.9gI that g) produces with Oleum Gossypii semen
2/ g) obtain the biofuel that oxidation stability and low-temperature fluidity all improve after the blending.Embodiment 8 is the biofuel that formed with volume ratio blending in 1: 6 by ricinus oil biological diesel oil and Oleum Gossypii semen biofuel; Embodiment 9 concocts the biofuel that form by ricinus oil biological diesel oil and Oleum Gossypii semen biofuel with volume ratio at 1: 6, adds the disclosed oxidation inhibitor 2 of 800ppm such as CN1742072A again, 6-di-tert-butyl methyl phenol (BHT).Its performance is as shown in table 4:
Table 4
| Embodiment | Oxidation stability (110 ℃)/hour | Cold filter clogging temperature/℃ |
| Ricinus oil biological diesel oil | 14.8 | 6 |
| The Oleum Gossypii semen biofuel | 0.6 | -4 |
| Oleum Gossypii semen biofuel+800ppm BHT | 3.1 | -4 |
| Oleum Gossypii semen biofuel+1600ppm BHT | 5.8 | -4 |
| Embodiment 8 | 3.7 | -1 |
| Embodiment 9 | 6.9 | -1 |
By table 4 as seen, if the biofuel that Oleum Gossypii semen is produced is not concocted with ricinus oil biological diesel oil, oxidation stability is very poor, even it is also defective to add oxidation inhibitor rear oxidation stability, and with Viscotrol C blending after, oxidation stability is improved, and low-temperature fluidity is compared ricinus oil biological diesel oil also raising.When the Viscotrol C adding proportion after a little while, though oxidation stability can not satisfy the standard-required value, but the susceptibility to additive improves, shown in embodiment 9, only need to add a small amount of oxidation inhibitor and just can reach standard-required, and the Oleum Gossypii semen biofuel of blending does not satisfy standard-required when adding oxidation inhibitor dosage is big yet.
Claims (15)
1. a biofuel comprises at least a iodine number and is not more than 90gI
2The biofuel A of/g and at least a iodine number are greater than 90gI
2The biofuel B of/g.
2. according to the described biofuel of claim 1, it is characterized in that the volume ratio of biofuel A and B is 1: 0.05～20.
3. according to the described biofuel of claim 1, it is characterized in that the volume ratio of biofuel A and B is 1: 0.1～10.
4. according to the described biofuel of claim 1, it is characterized in that said biofuel A is selected from and at least aly is not more than 90gI by following iodine number
2The biofuel of the grease production of/g: Oleum Cocois, palm kernel oil, plam oil, sweet oil, Viscotrol C, butter, sheep oil, lard and chicken fat.
5. according to the described biofuel of claim 1, it is characterized in that, said biofuel B be selected from least a by following iodine number greater than 90gI
2The biofuel of the grease production of/g: Oleum Gossypii semen, sesame oil, rapeseed oil, Semen Maydis oil, sunflower seed oil, soybean oil, safflower oil, rabbit oil, peanut oil, linseed oil, Fructus Zanthoxyli oil, Oak Tree oil, Prunus amygdalus oil, walnut oil, Yatall MA, curcas oil, tung oil, shinyleaf yellowhorn oil, coptis wood oil, kostelezkya virginica oil and cyperus esculentus oil.
6. according to claim 4 or 5 described biofuel, it is characterized in that greasy main component wherein is a fatty acid triglycercide.
7. according to claim 4 or 5 described biofuel, it is characterized in that grease wherein is selected from vegetables oil, animal oil and from the oil plant in microorganism, the algae substances.
8. the preparation method of the described biofuel of claim 1 comprises: be not more than 90gI by at least a iodine number
2The biofuel A of/g and at least a iodine number are greater than 90gI
2The biofuel B of/g concocts and forms.
9. according to the described preparation method of claim 8, it is characterized in that the volume harmonic ratio of biofuel A and B is 1: 0.05～20.
10. according to the described preparation method of claim 8, it is characterized in that the volume harmonic ratio of biofuel A and B is 1: 0.1～10.
11. the preparation method of the described biofuel of claim 1 comprises: at least a iodine number is not more than 90gI
2The fat A of/g and at least a iodine number are greater than 90gI
2The grease B of/g mixes the back and obtains biofuel by transesterification reaction production.
12., it is characterized in that the volumetric mixture ratio of fat A and grease B is 1: 0.05～20 according to the described preparation method of claim 11.
13., it is characterized in that the volumetric mixture ratio of fat A and grease B is 1: 0.1～10 according to the described preparation method of claim 11.
14., it is characterized in that said fat A is selected from a kind of in the following at least grease: Oleum Cocois, palm kernel oil, plam oil, sweet oil, Viscotrol C, butter, sheep oil, lard and chicken fat according to the described biofuel of claim 11.
15. according to the described biofuel of claim 11, it is characterized in that said grease B is selected from a kind of in the following at least grease: Oleum Gossypii semen, sesame oil, rapeseed oil, Semen Maydis oil, sunflower seed oil, soybean oil, safflower oil, rabbit oil, peanut oil, linseed oil, Fructus Zanthoxyli oil, Oak Tree oil, Prunus amygdalus oil, walnut oil, Yatall MA, curcas oil, tung oil, shinyleaf yellowhorn oil, coptis wood oil, kostelezkya virginica oil and cyperus esculentus oil.
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| CN107245378A (en) * | 2017-05-02 | 2017-10-13 | 唐山金利海生物柴油股份有限公司 | The biodiesel production facility and method of a kind of accurate adjustment Cetane number |
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| CN1912057A (en) * | 2006-08-16 | 2007-02-14 | 南昌大学 | Method of preparing biodiesel oil using nonedible woody oil and waste edible oil through esterification interesterification |
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