CN103710157A - Novel method used for preparing biodiesel from forest tree seed oil - Google Patents

Novel method used for preparing biodiesel from forest tree seed oil Download PDF

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Publication number
CN103710157A
CN103710157A CN201210379531.7A CN201210379531A CN103710157A CN 103710157 A CN103710157 A CN 103710157A CN 201210379531 A CN201210379531 A CN 201210379531A CN 103710157 A CN103710157 A CN 103710157A
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seed oil
forest tree
seed
tree seed
biofuel
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付玉杰
李吉
曲学进
罗猛
王微
赵春建
顾成波
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Northeast Forestry University
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Northeast Forestry University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel

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Abstract

The invention relates to a novel method used for preparing biodiesel from forest tree seed oil. According to the novel method, forest tree seed oil is taken as a raw material, and preparation of biodiesel is realized via solid heteropolyacid catalytic interesterification under microwave heating conditions, wherein reaction conversion rate is higher than 97%, and quality indexes of the obtained forest tree seed oil are capable of meeting domestic light diesel fuel standards. Advantages of the novel method are that: source range of the raw material is wide, production cost is low, catalysts can be recycled and reused, a novel technical route is provided for preparation of biodiesel, and a novel approach is provided for comprehensive utilization of forest resources of China.

Description

A kind of novel method of preparing biofuel with Forest tree seed seed oil
Technical field
The present invention relates to a kind of novel method of preparing biofuel with Forest tree seed seed oil, specifically under microwave heating condition, utilize the method for heteropoly acid catalysis Forest tree seed seed oil conversion biodiesel, belong to synthetic production field of biodiesel oil.
Technical background
Along with the continuous progress of society and economic developing rapidly; the mankind increase day by day to the consumption of the Nonrenewable resources such as oil, Sweet natural gas; cause the resources such as oil, Sweet natural gas increasingly in short supply; develop new substitute energy and solve current energy dilemma and become the countries in the world task of top priority, utilize renewable energy source to substitute traditional fossil energy and there is important strategic importance.Biofuel is a kind of emerging bioenergy developing rapidly in recent years, it is the ideal substitute of petroleum resources, be generally to take animal-plant oil by transesterification reaction, to obtain as raw material, the feature of environmental protection that it is excellent and recyclability have been subject to the attention of various countries, have immeasurable market outlook.
China is large agricultural country, aspect production biodiesel raw material, has the stock oil of certain planting scale as rapeseed oil, soybean wet goods, but it is as food crop, cost value is too high, is the main raw material of edible oil in people's daily life, the unsuitable raw material as extensive preparation biofuel.And the cheap waste cooking oil of cost lacks unification of the motherland standardized administration as sewer oil, acidification oil, swill wet goods, raw material too disperses, and quality is uneven; Cause country to be prepared in Biodiesel process because raw material problem is difficult to expand the scale of production, throughput is low, and output drops into and is not directly proportional to country.For this phenomenon, the invention provides a kind of method that Forest tree seed seed oil is prepared biofuel, utilize plantation not take agricultural and plough, do not conflict with people's lives edible oil, Forest tree seed seed oil with low cost is prepared biofuel.
Owing to usining, agricultural-food are more and more serious to the negative impact of the aspects such as global food price, grain security, world agricultural trade, farmers' income, energy structure and environment protection as the main raw material of biofuel, and China's forest tree resource is highlighted as the advantage of the seed oils such as manioca, Chinese pistache, camplotheca acuminata as biodiesel raw material.Manioca (datropha curcas L.) is Euphorbiaceae Jatropha plant, is a kind of perennial woody oilseed plant, originates in America, is now distributed widely in the Dry-hot Valley Area of the torrid zone, subtropics and rainfall rareness.Manioca seed oil length is 35% ~ 50%(Lu Ying, 2009).Chinese pistache, Anacardiaceae pistache, is now distributed in China Hebei, Shandong, Henan, Gansu, Shaanxi and the Yangtze valley, and south China, southwestern each province are mainly distributed in hilly country, low-relief terrain.Chinese pistache seed oil content approximately 35%, plants benevolence oleaginousness 57%(Chang Xia, 2008).Camplotheca acuminata (Camptotheca acuminata), Nyssaceae camplotheca acuminata belongs to, perennial subtropics Deciduous And Broadleaf Trees, this belongs to only camplotheca acuminata one kind of plant, is China endemic species, be now distributed widely in the Yangtze valley and on the south all provinces and regions.Camptotheca seed oil length is about 18%(monarch Yin Li, 2000).For making full use of forest tree resource, the present invention be take Forest tree seed seed oil as raw material is prepared biofuel, has improved the comprehensive utilization of forest tree resource, reduces production costs from raw material simultaneously.
About the production method of biofuel, at present industrial extensively adopt be mostly chemical method, using mineral acid, alkali as catalyzer.Acid catalyzed process refers to that catalyzer is the preparation method of an acidic catalyst, and under acid catalysis condition, esterification reaction rate, far faster than transesterify speed, is suitable for the preparing biodiesel from lipid that free fatty acid content is higher.But an acidic catalyst using in traditional method is as sulfuric acid, phosphoric acid, hydrofluoric acid etc., and corrodibility is strong, aftertreatment is complicated, cannot reclaim, and spent acid solution discharge causes severe contamination to environment.Therefore, it is catalyst replaced traditional catalyst that the present invention adopts solid heteropoly acid, and heteropolyacid has low temperature, high reactivity, high stability, the advantage such as reusable, has good industrial prospect.
Carry out microwave radiation heating is current more advanced method.In Exchange Ester Process, use microwave heating directly to reactant inside, to heat, increase the useful area of phase interface, two phase reaction degree is strengthened.Meanwhile, microwave heating heat-up rate is fast, and homogeneous heating can increase two-phase degree of mixing effectively, and reaction efficiency is obviously improved.Compare with existing preparation technology, greatly shortened the production time, improved production efficiency.Therefore, the present invention has adopted the auxiliary transesterification of microwave heating to be prepared biofuel, and efficiency is higher.
In sum, utilizing Vegetable oil lipoprotein catalysis to prepare in the process of production biofuel, main influence factor is conversing technology backwardness, low conversion rate, seriously polluted, and production cost is raise.Therefore, be necessary to seek a kind of method of preparing biofuel of handy and safe economical and efficient.The present invention is intended to set up a kind of by adopting the method for solid catalyst and the combination of microwave heating auxiliary phase, realizes the method for preparing biofuel simple and quick, transformation efficiency is high.
Summary of the invention
The object of the present invention is to provide a kind ofly economize on resources, simple to operate, preparation fast, transformation efficiency is higher, yield is higher, can reduce raw materials cost, take Forest tree seed seed oil first as raw material, under microwave heating condition, pass through the method for solid heteropoly acid biodiesel.Be achieved through the following technical solutions: a kind of novel method of preparing biofuel with Forest tree seed seed oil, comprises the steps:
(1) hydration degum removal of impurities is processed: Forest tree seed seed oil is placed in thermostat water bath, Temperature Setting is 60 ℃, to 1 ~ 4% the boiling water that adds oil quality in Forest tree seed seed oil, rapid stirring 10 ~ 20min, is then warming up to 90 ℃, stops stirring, standing 6h, after centrifugal layering, upper strata is stock oil, and lower floor is glue and impurity;
(2) transesterification reaction: Forest tree seed seed oil and short chain alcohol after processing are carried out to transesterification reaction, reaction conditions is: the mass ratio of Forest tree seed seed oil and short chain alcohol is 1:0.8 ~ 1:1.5,1 ~ 3% the solid heteropoly acid catalyzer that adds tree seed oil quality, microwave irradiation power 300 ~ 700W, mixing speed 150 ~ 300r/min, temperature of reaction is 40 ~ 70 ℃, and the reaction times is 10 ~ 60min;
(3) phase-splitting: treat that the reaction product in step (2) is cooled to room temperature, by vacuum filtration, solid-state heteropolyacid catalyst is separated with liquid reaction product, by reaction product stratification, obtain the glycerine phase of the biofuel Xiang He lower floor on upper strata, biofuel is carried out, after negative pressure rotary evaporation, can obtaining biofuel product mutually.
The source of bio-oil raw material is generally edible seed oil, and cost is higher, and for production control cost, it is synthetic that contriver uses the Vegetable oil lipoprotein extracting in forest tree resource to carry out biofuel first.In order better to realize the present invention, the acid catalyst adopting is callable solid heteropoly acid, and described solid heteropoly acid catalyzer is a class heteropolyacid with Keggin structure, comprises phospho-wolframic acid, phospho-molybdic acid, phosphovanadomolybdic acid, silicotungstic acid, silicomolybdic acid etc.
Another object of the present invention is to provide a kind of biofuel.
Concrete technical scheme is: described biofuel is for to prepare according to the above method.
The method of preparing biofuel of the present invention, adopting manioca seed oil, camptotheca seed oil, Chinese pistache seed oil is that raw material is prepared biofuel, its raw material sources are extensive, aboundresources, with low cost.
The present invention compared with prior art, has the following advantages:
1. to adopt Forest tree seed seed oil be raw material in the present invention, can, not destroying plant ecological balance, not affecting on the basis of agriculture production, to forest tree resource, carry out efficient and rational utilization.
2. the inventive method is simple, and transformation efficiency is up to more than 97%, and the reaction times is shorter, and efficiency is higher, and cost is lower, can realize large-scale industrialized production.
3. the recyclable Reusability of heteropolyacid catalyst.Almost no waste discharge in production process, environmental protection.
Accompanying drawing explanation
Accompanying drawing 1 is the schema of setting forth present method.
Accompanying drawing 2 is the main quality index of biofuel product that obtain, and compares with China solar oil standard GB252-2000 and German Biodiesel Standards DINV51606.Detect index and comprise density, viscosity, acid number, flash-point, sulphur content and carbon residue, all meet China's solar oil standard.
Embodiment
Embodiment 1
Camptotheca seed oil is placed in thermostat water bath, and Temperature Setting is 60 ℃, in camptotheca seed oil, slowly adds 3.2g boiling water, rapid stirring 15min, is then warming up to 90 ℃, stops stirring, standing 6h, after centrifugal layering, obtains the camptotheca seed oil of the transparent clarification in upper strata.
Get and process 10g camptotheca seed oil later and the phosphotungstic acid catalyst of 0.3g, put into the special there-necked flask of 100mL, be placed in microwave reaction instrument, connect condensing works and mechanical stirring device, rotating speed with 200r/min stirs, and setting microwave irradiation power is 500W, treats that temperature rises to 70 ℃, the methyl alcohol that adds again 15g, reaction 10min; After reaction finishes, question response product is cooled to room temperature, by vacuum filtration, solid-state phosphotungstic acid catalyst is separated with liquid reaction product.Standing stay-over demixion, obtains the glycerine phase of the biofuel Xiang He lower floor on upper strata, and biofuel is carried out, after negative pressure rotary evaporation, obtaining biofuel product 8.7g mutually, and assaying reaction transformation efficiency is 97.7%.
Embodiment 2
Coptis wood oil is placed in thermostat water bath, and Temperature Setting is 60 ℃, in coptis wood oil, slowly adds 3g boiling water, and rapid stirring 15min, is then warming up to 90 ℃, stops stirring standing 6h.Get 10g coptis wood oil after exquisiteness and the phospho-molybdic acid catalyzer of 0.15g, react under microwave heating condition with 8g methyl alcohol, processing parameter is: rotating speed 250r/min, microwave irradiation power 500W, temperature 60 C, time 30min; After reaction finishes, by suction filtration, isolate phospho-molybdic acid catalyzer, by the centrifugal biofuel product 8.9g that obtains, assaying reaction transformation efficiency is 97.2%.
Embodiment 3
The hydration degum removal of impurities of learning from else's experience is processed and is obtained the 10g of manioca seed oil and the silicotungstic acid catalyst of 0.2g, reacts under microwave heating condition with 10g ethanol, and processing parameter is: rotating speed 150r/min, microwave irradiation power 400W, temperature 70 C, time 45min; After reaction finishes, by suction filtration, isolate silicotungstic acid catalyst, by the centrifugal biofuel product 8.4g that obtains, assaying reaction transformation efficiency is 97.6%.

Claims (4)

1. the present invention relates to a kind of novel method of preparing biofuel with Forest tree seed seed oil, it is characterized in that: mainly comprise the following steps:
(1) hydration degum removal of impurities is processed: Forest tree seed seed oil is placed in thermostat water bath, Temperature Setting is 60 ℃, to 1 ~ 4% the boiling water that adds oil quality in Forest tree seed seed oil, rapid stirring 10 ~ 20min, is then warming up to 90 ℃, stops stirring, standing 6h, after centrifugal layering, upper strata is stock oil, and lower floor is glue and impurity;
(2) transesterification reaction: Forest tree seed seed oil and short chain alcohol after processing are carried out to transesterification reaction, reaction conditions is: the mass ratio of Forest tree seed seed oil and short chain alcohol is 0.5:1 ~ 1:1,1 ~ 3% the solid heteropoly acid catalyzer that adds tree seed oil quality, microwave irradiation power 300 ~ 700W, mixing speed 150 ~ 300r/min, temperature of reaction is 40 ~ 70 ℃, and the reaction times is 10 ~ 60min;
(3) phase-splitting: treat that the reaction product in step (2) is cooled to room temperature, by vacuum filtration, solid-state heteropolyacid catalyst is separated with liquid reaction product, by reaction product stratification, obtain the glycerine phase of the biofuel Xiang He lower floor on upper strata, biofuel is carried out, after negative pressure rotary evaporation, can obtaining biofuel product mutually.
2. a kind of novel method of preparing biofuel with Forest tree seed seed oil according to claim 1, is characterized in that described Forest tree seed seed oil comprises manioca seed oil, camptotheca seed oil, Chinese pistache seed wet goods.
3. a kind of novel method of preparing biofuel with Forest tree seed seed oil according to claim 1, is characterized in that the short chain alcohol described in step (2) is methyl alcohol or ethanol.
4. a kind of novel method of preparing biofuel with Forest tree seed seed oil according to claim 1, it is characterized in that the solid heteropoly acid catalyzer described in step (2) is a class heteropolyacid with Keggin structure, comprises phospho-wolframic acid, phospho-molybdic acid, phosphovanadomolybdic acid, silicotungstic acid, silicomolybdic acid etc.
CN201210379531.7A 2012-10-09 2012-10-09 Novel method used for preparing biodiesel from forest tree seed oil Pending CN103710157A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105854939A (en) * 2016-03-31 2016-08-17 江西理工大学 Rare-earth-modified heteropolyacid catalyst, preparation method thereof and method for preparing biodiesel
CN107321390A (en) * 2016-11-10 2017-11-07 东北林业大学 A kind of preparation method of compound bio base solid-carrying type biodiesel catalyst
CN109691892A (en) * 2017-10-24 2019-04-30 佛山市顺德区美的电热电器制造有限公司 Cooking apparatus and its thermometric compensating control method and device

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CN101307242A (en) * 2008-07-14 2008-11-19 陈登龙 Process for producing biodiesel form seeds and fruits of plants
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CN101307242A (en) * 2008-07-14 2008-11-19 陈登龙 Process for producing biodiesel form seeds and fruits of plants
JP2011012254A (en) * 2009-06-05 2011-01-20 Central Res Inst Of Electric Power Ind Method for producing biodiesel fuel

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105854939A (en) * 2016-03-31 2016-08-17 江西理工大学 Rare-earth-modified heteropolyacid catalyst, preparation method thereof and method for preparing biodiesel
CN105854939B (en) * 2016-03-31 2019-02-05 江西理工大学 The preparation method of rare earth modified heteropolyacid catalyst, preparation method and biodiesel
CN107321390A (en) * 2016-11-10 2017-11-07 东北林业大学 A kind of preparation method of compound bio base solid-carrying type biodiesel catalyst
CN107321390B (en) * 2016-11-10 2019-12-13 东北林业大学 preparation method of composite bio-based immobilized biodiesel catalyst
CN109691892A (en) * 2017-10-24 2019-04-30 佛山市顺德区美的电热电器制造有限公司 Cooking apparatus and its thermometric compensating control method and device

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Application publication date: 20140409