CN101818083B - Method for preparing biodiesel by using chenopodium glaucum linn - Google Patents
Method for preparing biodiesel by using chenopodium glaucum linn Download PDFInfo
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- CN101818083B CN101818083B CN2010101891151A CN201010189115A CN101818083B CN 101818083 B CN101818083 B CN 101818083B CN 2010101891151 A CN2010101891151 A CN 2010101891151A CN 201010189115 A CN201010189115 A CN 201010189115A CN 101818083 B CN101818083 B CN 101818083B
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- fatty acid
- oil
- methyl ester
- acid methyl
- chenopodium
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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
Abstract
The invention relates to a method for preparing biodiesel by taking chenopodium glaucum linn as a raw material. The method comprises the following steps of: a, pressing the chenopodium glaucum linn into oil by using a presser; and removing impurities by using a natural sedimentation method; b, mixing the chenopodium glaucum linn oil and the methanol solution of catalyst KOH, wherein the mass ratio of the methanol to the chenopodium glaucum linn oil is 1.6:1 and the mass of the catalyst KOH is 0.5 to 1.5 percent of that of the chenopodium glaucum linn oil; c, adding the mixed solution into a 10L reaction kettle which is provided with a stirring device, a reflux condensing device and a temperature measuring device; and performing an ester exchange reaction under the conditions of constant temperature, stirring and refluxing, wherein the time for the ester exchange reaction is 0.5 to 1.5 hours, and the temperature is between 60 and 80 DEG C; d, standing and delaminating, wherein the upper layer is a fatty acid methyl ester layer and the lower layer is a glycerin layer; e, skimming to obtain the upper layer of fatty acid methyl ester, and removing excess methanol by distilling under a reduced pressure so as to obtain the fatty acid methyl ester with the purity of over 90 percent; and f, adding part of petroleum diesel into the extracted fatty acid methyl ester to obtain the biodiesel, wherein the added quantity of the petroleum diesel is 23 weight percent of the fatty acid methyl ester. The method has the characteristics of simple production process and low cost price, and large batch production so as to meet market demand.
Description
Technical field
The present invention relates to a kind of preparation method of biofuel, especially relate to and use chenopodium glaucum linn to be the feedstock production method of bio-diesel oil.
Background technology
The human at present energy that uses is main with fossil energy; But fossil oil is a kind of Nonrenewable energy resources; The turnout of oil can supply the human oil that uses fewer and feweri near the historical high peak, and the consequent is countries in the world growing in intensity to the virgin field contention.China became the second-biggest-in-the-world oil consuming countries after the U.S. since 2003; Year imported crude oil has increased by 31%; In the face of the oil competition of above-mentioned fierceness, the cost that China pays also increases day by day, and therefore seeking renewable resources has become inevitable as the surrogate of fossil oil.
Biofuel is a kind of important fossil oil surrogate, has become the research focus of countries in the world at present.U.S. ASTM is from renewable lipid resource about the definition of biofuel, like the longer chain fatty acid alkyl monoester that obtains in vegetables oil or the Tallow, beef, and the fuel of forming by the mono alkyl ester of longer chain fatty acid." biology " represented it for petrifaction diesel, is a kind of reproducible Biological resources; " diesel oil " refers to it and can be used for diesel motor.Biofuel is as a kind of alternative fuel, and it can mix use with pure state or with petrifaction diesel.
For this noun of biofuel; Only refer to the fatty acid methyl ester that meets U.S. ASTM standard or the various physical and chemical indexs of European Union's standard code from the strict sense; Rather than the fuel of material plant oil, animal tallow, the oil & fat that particularly reacted, coal slurry or any " biological extraction "; Perhaps diesel oil emulsification, compound diesel, all this kind fails to satisfy above-mentioned definition and standard middle finger target all is not a biofuel, cannot itself and biofuel be obscured.
Chenopodium glaucum linn is the non-grain wild crop of a kind of extensive growth in northern area; Do not let alone to rot if do not add to handle; Just formed the great wasting of resources, if chenopodium glaucum linn is squeezed oil, and through a series of processing back formation biofuel; Both rationally and effectively utilized wild plant resource, for the energy dilemma that solves China new solution thinking was provided again.In addition, what need particularly point out is that the enforcement of this technology is not striven grain with the people and striven ground.
Summary of the invention
What the object of the present invention is to provide that a kind of method of manufacture is simple, easy to operate, cost value is cheap is the feedstock production method of bio-diesel oil with the chenopodium glaucum linn.
The present invention adopts following technical scheme:
Prepare method of bio-diesel oil with chenopodium glaucum linn, step is following:
A. with squeezing machine chenopodium glaucum linn is squeezed oil, impurity is removed with natural sedimentation method;
B. the methanol solution with grayish green chenopodium oil, catalyzer KOH mixes; The mass ratio of methyl alcohol and grayish green chenopodium oil is 1.6: 1, the KOH catalyst quality be grayish green chenopodium oil heavy 0.5% to 1.5%;
C. above-mentioned mixed solution is joined in the 10L reaction kettle that whipping appts, reflux condensate device and temperature measuring device are housed; Under constant temperature, the stirring and refluxing condition; Carry out transesterification reaction, the time of transesterification reaction is 0.5 to 1.5 hour, and the temperature of transesterification reaction is 60 ℃ to 80 ℃;
D. standing demix, the upper strata is a layer of methylester of fatty acid, lower floor is a glycerin layer;
E. separatory obtains the upper strata fatty acid methyl ester, and unnecessary methyl alcohol is removed in underpressure distillation, and obtaining purity is the fatty acid methyl ester more than 90%;
F. the above-mentioned fatty acid methyl ester that extracts is added a part of petrifaction diesel again, can obtain biofuel after the stirring.
The add-on of said petrifaction diesel is 23% of a fatty acid methyl ester weight.
The present invention is that raw material manufacturing method of bio-diesel oil has following advantage with the chenopodium glaucum linn:
1. production technique of the present invention is simple, and cost value is cheap, can produce in enormous quantities to meet the need of market;
2. chenopodium glaucum linn is the wild crop of extensive growth in northern area, can effectively grayish green chenopodium oil be converted into biofuel through technology of the present invention; And this invention both rationally and had effectively utilized slack resources, for the energy shortage situation of alleviating China a solution route was provided again.
3. biofuel of the present invention has good environmental protection characteristic, shows that mainly sulphur content is low, can reduce the discharging of sulfurous gas and other sulfide greatly; Oxygen level is high, compares with ordinary diesel oil, and smoke evacuation is lacked during its burning, and the quantity discharged of corresponding carbon monoxide is also few; Biodegradability is high.
4. have good safety performance, because flash-point is high, biofuel does not belong to hazardous substance.Therefore, be again conspicuous in the security aspect transportation, storage, the use.
5. has renewable performance.As renewable energy source, different with prospective oil, it is through the effort of agricultural and bio-science man, but supply can be inexhausted.
6. the biofuel industrial expansion can promote domestic economy, especially the benign development of rural economy.
Since the carbonic acid gas of biofuel when burning discharging far below the carbonic acid gas that is absorbed in this growing process, thereby improve since the Global warming that emission of carbon-dioxide causes this be harmful to the mankind's great environmental problem.
Embodiment
Below be embodiment of the present invention, said embodiment is for further describing the present invention, rather than restriction the present invention.
Embodiment 1:
Take by weighing the grayish green chenopodium oil that squeezed 2000 grams, KOH catalyzer 10 grams, methyl alcohol 3200 grams are dissolved in KOH the methanol solution of processing KOH in the methyl alcohol and mix with grayish green chenopodium oil; Above-mentioned mixed solution is joined in the 10L reaction kettle that whipping appts, reflux condensate device and temperature measuring device are housed, and reaction is 1.5 hours under 70 ℃ of constant temperature, the stirring and refluxing condition; Take out the reaction solution standing demix, the upper strata is a layer of methylester of fatty acid, and lower floor is a glycerin layer; Separatory obtains the upper strata fatty acid methyl ester, and unnecessary methyl alcohol is removed in underpressure distillation, obtains the fatty acid methyl ester of 1650 gram purity 91.6%; Petrifaction diesel with fatty acid methyl ester adding 379.5 grams that extract stirs the back and just can obtain biofuel.
Embodiment 2:
Take by weighing the grayish green chenopodium oil that squeezed 2000 grams, KOH catalyzer 20 grams, methyl alcohol 3200 grams are dissolved in KOH the methanol solution of processing KOH in the methyl alcohol and mix with grayish green chenopodium oil; Above-mentioned mixed solution is joined in the 10L reaction kettle that whipping appts, reflux condensate device and temperature measuring device are housed, and reaction is 0.5 hour under 60 ℃ of constant temperature, the stirring and refluxing condition; Take out the reaction solution standing demix, the upper strata is a layer of methylester of fatty acid, and lower floor is a glycerin layer; Separatory obtains the upper strata fatty acid methyl ester, and unnecessary methyl alcohol is removed in underpressure distillation, obtains the fatty acid methyl ester of 1620 gram purity 93.5%; Petrifaction diesel with fatty acid methyl ester adding 372.6 grams that extract stirs the back and just can obtain biofuel.
Embodiment 3:
Take by weighing the grayish green chenopodium oil that squeezed 2000 grams, KOH catalyzer 30 grams, methyl alcohol 3200 grams are dissolved in KOH the methanol solution of processing KOH in the methyl alcohol and mix with grayish green chenopodium oil; Above-mentioned mixed solution is joined in the 10L reaction kettle that whipping appts, reflux condensate device and temperature measuring device are housed, and reaction is 1 hour under 60 ℃ of constant temperature, the stirring and refluxing condition; Take out the reaction solution standing demix, the upper strata is a layer of methylester of fatty acid, and lower floor is a glycerin layer; Separatory obtains the upper strata fatty acid methyl ester, and unnecessary methyl alcohol is removed in underpressure distillation, obtains the fatty acid methyl ester of 1615 gram purity 92.1%; Petrifaction diesel with fatty acid methyl ester adding 371.5 grams that extract stirs the back and just can obtain biofuel.
Embodiment 4:
Take by weighing the grayish green chenopodium oil that squeezed 2000 grams, KOH catalyzer 30 grams, methyl alcohol 3200 grams are dissolved in KOH the methanol solution of processing KOH in the methyl alcohol and mix with grayish green chenopodium oil; Above-mentioned mixed solution is joined in the 10L reaction kettle that whipping appts, reflux condensate device and temperature measuring device are housed, and reaction is 1 hour under 80 ℃ of constant temperature, the stirring and refluxing condition; Take out the reaction solution standing demix, the upper strata is a layer of methylester of fatty acid, and lower floor is a glycerin layer; Separatory obtains the upper strata fatty acid methyl ester, and unnecessary methyl alcohol is removed in underpressure distillation, obtains the fatty acid methyl ester of 1645 gram purity 92.4%; Petrifaction diesel with fatty acid methyl ester adding 378.4 grams that extract stirs the back and just can obtain biofuel.
What the present invention proposed prepares method of bio-diesel oil with chenopodium glaucum linn; Be described through embodiment; Person skilled obviously can be changed or suitably change and combination making method as herein described in not breaking away from content of the present invention, spirit and scope, realizes the present invention's technology.Special needs to be pointed out is, the replacement that all are similar and change apparent to those skilled in the artly, they are regarded as and are included in spirit of the present invention, scope and the content.
Claims (1)
1. one kind prepares method of bio-diesel oil with chenopodium glaucum linn, it is characterized in that step is following:
A. with squeezing machine chenopodium glaucum linn is squeezed oil, impurity is removed with natural sedimentation method;
B. the methanol solution with grayish green chenopodium oil and catalyzer KOH mixes; The mass ratio of methyl alcohol and grayish green chenopodium oil is 1.6:1, the KOH catalyst quality be grayish green chenopodium oil heavy 0.5% to 1.5%;
C. above-mentioned mixed solution is joined in the reaction kettle that whipping appts, reflux condensate device and temperature measuring device are housed; Under constant temperature, the stirring and refluxing condition; Carry out transesterification reaction, the time of transesterification reaction is 0.5 to 1.5 hour, and the temperature of transesterification reaction is 60 ℃ to 80 ℃;
D. standing demix, the upper strata is a layer of methylester of fatty acid, lower floor is a glycerin layer;
E. separatory obtains the upper strata fatty acid methyl ester, and unnecessary methyl alcohol is removed in underpressure distillation, and obtaining purity is the fatty acid methyl ester more than 90%;
F. the above-mentioned fatty acid methyl ester that extracts is added a part of petrifaction diesel again, can obtain biofuel after the stirring; The add-on of petrifaction diesel is 23% of a fatty acid methyl ester weight.
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CN102382716A (en) * | 2010-09-03 | 2012-03-21 | 陕西渭力生物能源有限公司 | Method and equipment for preparing biodiesel with high-acid-value waste oil |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1279663A (en) * | 1997-11-24 | 2001-01-10 | 能源环境技术股份有限公司 | Method and equipment for producing fatty acid methyl ester |
CN1718679A (en) * | 2005-07-06 | 2006-01-11 | 中国科学院山西煤炭化学研究所 | Subcritical methanol phase solid acid alkali catalytic stearic exchange system method of bio-diesel oil |
CN201284307Y (en) * | 2008-10-29 | 2009-08-05 | 湖南省生物柴油工程技术研究中心 | Glycerol sedimentation coupling ester exchange continuous reaction device |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1279663A (en) * | 1997-11-24 | 2001-01-10 | 能源环境技术股份有限公司 | Method and equipment for producing fatty acid methyl ester |
CN1718679A (en) * | 2005-07-06 | 2006-01-11 | 中国科学院山西煤炭化学研究所 | Subcritical methanol phase solid acid alkali catalytic stearic exchange system method of bio-diesel oil |
CN201284307Y (en) * | 2008-10-29 | 2009-08-05 | 湖南省生物柴油工程技术研究中心 | Glycerol sedimentation coupling ester exchange continuous reaction device |
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