CN102847612B - Biodiesel for coal flotation and preparation method of biodiesel - Google Patents
Biodiesel for coal flotation and preparation method of biodiesel Download PDFInfo
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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
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Abstract
The invention discloses biodiesel for coal flotation and a preparation method of the biodiesel and belongs to the technical fields of utilization of waste oil, preparation of biodiesel and preparation and application of coal flotation agents. The biodiesel is characterized in that the content of fatty acid methyl ester in the biodiesel is higher than 63%, the content of fatty acid monoglyceride is lower than 25%, the content of diglyceride is lower than 10%, and the content of triglyceride is lower than 2%. The preparation method comprises the steps that waste oil serves as a raw material, SO42 is loaded through mesopore silicon oxide, mesopore zirconium oxide or porous zirconium oxide, the biodiesel is obtained by catalytic esterification, and the biodiesel can serve as a flotation agent used in coal flotation. The waste oil serves as a raw material in preparation of the biodiesel. The biodiesel is used in the coal flotation, the production cost of the flotation agent can be reduced greatly, a new purpose of the biodiesel is developed, and the biodiesel is non-toxic and innocuous, capable of degrading biologically and is an effective coal flotation agent.
Description
Technical field
A kind of biodiesel for coal flotation of the present invention and preparation method thereof belongs to the preparations and applicatio field of the utilization of abandoned oil, the preparation of biodiesel and Floating agent for coal.In particular to a kind of abandoned oil that utilizes through the biodiesel and preparation method thereof of mesopore super acids material catalyzes esterification for the preparation of coal flotation.
Background technology
The flotation of coal cleaned coal and mineral ash content is separated by flotation agent, thus obtain the cleaned coal of high-quality.The flotation agent that current coal separation industry uses is commonly petroleum base kerosene or diesel oil joins sec-octyl alcohol foaming agent to use as collecting agent, and flotation effect is evaluated by clean coal yield and cleans ash.In short supply due to petroleum resources, uses petroleum based diesel or kerosene to make flotation agent and not only makes coal separation production cost rise, also sulphur content wherein may be updated in flotation coal and reduce ature of coal.Therefore, and promotion in short supply at petroleum-based energy is saved energy and reduce the cost and developed, select environmental protection and the flotation agent for coal preparation reducing flotation cost, to the development of promotion coal flotation, the needs meeting coal flotation industry are all of great practical significance.
Biodiesel, compared with petroleum diesel, has flash-point high, stores transportation safety, the advantages such as self is biodegradable, environmentally friendly, and in its fire emission, the nuisance content such as sulfur dioxide, sulfide, carbon dioxide is low, meets environmental requirement.Biodiesel replaces petroleum diesel can alleviate the situation of diesel oil supply shortage, and then alleviates oil supply crisis.But, because biodiesel is greater than 96.5% as demanded fuel fatty acid methyl ester, so require complex manufacturing, increase production cost, be difficult in marketing.And if biodiesel is applied to the not high industry of a kind of content requirement to fatty acid methyl ester, then can reduce costs, be beneficial to marketing, more meet the requirement of the environmental protection energy.
The preparation of biodiesel take animal and plant fat as raw material, and make through ester exchange under catalyst action with methyl alcohol or ethanol, its method has acid-base catalysis method, catalyzed by biological enzyme and supercritical methanol technology.Adopt homogeneous acid or base catalysis biodiesel (as CN1473907A, DE3444893 etc.) to need neutralization removing catalyst, produce a large amount of waste water containing salkali waste or spent acid etc., contaminated environment.Therefore, multiphase solid acid or base catalyst become the focus of research, and CN101338215A discloses with V
2o
5prepare the method for biodiesel Deng solid acid catalyst, but its conversion ratio is 79% ~ 98%.It is the method that a step of catalyst prepares biodiesel that CN101289629A discloses with biomass based sulfonation charcoal, and the biodiesel of preparation reaches the index of GB/T20828-2007, but its catalyst preparing affects greatly by raw material.CN101294096A discloses and adopts nano-crystal whisker catalysis agent to react under Ultrasonic Conditions, and productive rate reaches 97%, but its ultrasonic reaction condition industrially more difficult realization used.The suitability for industrialized production of biodiesel depends primarily on the cost of raw oil material simultaneously, and can greatly reduce its production cost using swill oil, trench wet goods abandoned oil as the raw materials for production of biodiesel.CN200610200554.1, CN200610125581.7 and CN200710130710.6 individually disclose and adopt ferric trichloride and alkali, the mixture of p-methyl benzenesulfonic acid, butter of tin and the concentrated sulfuric acid and resin catalyst, utilize waste grease to prepare the method for biodiesel.The biodiesel prepared with first-class method uses mainly as fuel, and have not been reported as the application of Floating agent for coal.
Summary of the invention
The present invention discloses a kind of biodiesel for coal flotation and preparation method thereof, its object is to seek a kind of cheapness, environmental protection and effective Floating agent for coal with the requirement of satisfied modern coal flotation industry to flotation agent and flotation effect thereof.
A kind of biodiesel for coal flotation of the present invention, it is characterized in that described fatty acid methyl esters in biodiesel is greater than 63%, fatty acid monoglyceride content is less than 25%, and dialycerides fat acid and esters content is less than 10%, and fatty acid triglyceride content is less than 2%.
The preparation method of above-mentioned a kind of biodiesel for coal flotation, it is characterized in that the method is take abandoned oil as raw material, obtain biodiesel through catalytic esterification, catalyst is wherein mesopore super acids solid catalyst, and prepared biodiesel directly can be used for the flotation of coal as flotation agent.Its concrete technology is:
1, in the batch reactor of band stirring, by molar ratio of methanol to oil 10-20:1 by methyl alcohol and abandoned oil mixing, add the mesoporous solids super acidic catalyst of 5-10% abandoned oil quality again, reaction temperature 120-200 DEG C, reaction pressure 0.1-6.5MPa, reaction time 0.5-3h, filters out catalyst after reaction, by product stratification.
2, after the product layering in above-mentioned, get upper liquid and catalyst continues to join in reactor, then add the methyl alcohol with above-mentioned moderate, under 150-200 DEG C, 0.5-4MPa, react 0.5-1h, after reaction, filter out catalyst, by product stratification, get upper liquid and can obtain biodiesel.
The preparation method of above-mentioned a kind of biodiesel for coal flotation, it is characterized in that the content of abandoned oil free fatty acid used in the method is at 2%-60%, fatty acid triglyceride content is at 40%-98%.
The preparation method of above-mentioned a kind of biodiesel for coal flotation, is characterized in that mesoporous solids super acidic catalyst used in the method is mesoporous silica-zirconia or porous zirconia load SO
4 2-catalyst, specific area is 200-600 m
2/ g, aperture is 1.6-6.4nm.
The flotation effect of flotation agent adopts XFD-1.5 flotation device to evaluate, its method is join in the coal slurry of flotation cell by biodiesel Floating agent for coal, coal-water fluid concentration 100g/L, and biodiesel consumption is 0.8kg-3kg/t coal, flotation device rotating speed 1800r/min, aeration quantity 0.25m
3/ (m
2min), stir 2min, bubble 3min is scraped in flotation.
A kind of biodiesel for coal flotation of the present invention and preparation method thereof has the following advantages:
(1) biodiesel is applied in coal flotation, opens a novelty teabag of biodiesel, and biodiesel is no longer only used as power fuel.
(2) mesopore super acidic catalyst is applied in the reaction of synthesis coal flotation biodiesel; And adopt secondary response mode to control the ratio of product, reach the requirement preparing coal flotation biodiesel.
(3) biodiesel is applied directly in coal flotation, to the content requirement of its fatty acid methyl ester low standard-required > 96.5% such as () biodiesel European Union, the production cost of biodiesel flotation agent is reduced, and then reduces coal flotation cost.
(4) biodiesel is applied in coal flotation, and the performance of existing collecting agent has barbotage concurrently again, does not need to add foaming agent.Dialycerides fat acid esters in biodiesel and fatty acid monoglyceride all have the performance of collecting agent and foaming agent, can also reduce smart pit ash simultaneously, have significantly selective.
(5) coal flotation biodiesel, itself is nontoxic, biodegradable, promotes the environmental protection development of coal preparation industry.
(6) not only greatly reduce production cost as the raw materials for production of biodiesel using swill oil, trench wet goods abandoned oil, and decrease environmental pollution, achieve twice laid.
Detailed description of the invention
embodiment 1:
Get abandoned oil 41.8g and methyl alcohol 27.1g that free fatty and fatty acid triglyceride content are respectively 15% and 85%, join in 100mL batch reactor and mix, then add 4.2g porous super acids SO
4 2-/ ZrO
2(specific area is 220m to catalyst
2/ g, aperture is 1.9nm and 2.2nm), at 120 DEG C, stirring reaction 3h under 0.1MPa, filter out catalyst after reaction, by product stratification.Get upper liquid and catalyst continues to join in reactor, then add 27.1g methyl alcohol, at 150 DEG C, under 0.5MPa, stirring reaction 1h, filters out catalyst again, by product stratification, gets upper liquid and namely obtains coal flotation biodiesel.By analysis, this fatty acid methyl esters in biodiesel is 68.8%, dialycerides fat acid and esters content 6.6%, fatty acid monoglyceride content 24.4%, fatty acid triglyceride 0.2%.
Get Shanxi throughput forecast coal sample 150.8g(moisture 0.51%, ash content 15.93%), adopt XFD-1.5 flotation device to carry out flotation, coal-water fluid concentration 100g/L, joins in the coal slurry of flotation cell by 0.435g coal flotation biodiesel, stirs 2min, adjust flotation device rotating speed 1800r/min, aeration quantity 0.25m
3/ (m
2min), bubble 3min is scraped in flotation, cleaned coal and tail coal vacuum filtration, then dry 24h in 75 DEG C of thermostatic drying chambers respectively, finally quick ashing in Muffle furnace.Floatation clean coal productive rate 92.97%, cleans ash 12.57%, tail coal productive rate 7.03 %, tail coal ash content 64.33 %.
embodiment 2:
Get abandoned oil 41.8g and methyl alcohol 22.3g that free fatty and fatty acid triglyceride content are respectively 10% and 90%, join in 100mL batch reactor and mix, then add 2.2g porous super acids SO
4 2-/ ZrO
2(specific area is 220m to catalyst
2/ g, aperture is 1.9nm and 2.2nm), at 180 DEG C, stirring reaction 1h under 2.5MPa, filter out catalyst after reaction, by product stratification.Get upper liquid and catalyst continues to join in reactor, then add 22.3g methyl alcohol, at 150 DEG C, under 0.5MPa, stirring reaction 0.5h, filters out catalyst again, by product stratification, gets upper liquid and namely obtains coal flotation biodiesel.By analysis, this fatty acid methyl esters in biodiesel is 65.8%, dialycerides fat acid and esters content 8.4%, fatty acid monoglyceride content 24.1%, fatty acid triglyceride 1.7%.
Get Shanxi malanite coal sample 151.1g(moisture 0.72%, ash content 23.80%), adopt XFD-1.5 flotation device to carry out flotation, coal-water fluid concentration 100g/L, joins in the coal slurry of flotation cell by 0.18g coal flotation biodiesel, stirs 2min, adjust flotation device rotating speed 1800r/min, aeration quantity 0.25m
3/ (m
2min), bubble 3min is scraped in flotation, cleaned coal and tail coal vacuum filtration, then dry 24h in 75 DEG C of thermostatic drying chambers respectively, finally quick ashing in Muffle furnace.Floatation clean coal productive rate 84.74%, cleans ash 11.12%, tail coal productive rate 15.26 %, tail coal ash content 89.55 %.
embodiment 3:
Get abandoned oil 41.8g and methyl alcohol 14.8g that free fatty and fatty acid triglyceride content are respectively 2% and 98%, join in 100mL batch reactor and mix, then add 3.6g mesopore super acids SO
4 2-/ ZrO
2-SiO
2(specific area is 450m to catalyst
2/ g, aperture is 3.9nm), at 200 DEG C, stirring reaction 0.5h under 4.8MPa, filter out catalyst after reaction, by product stratification.Get upper liquid and catalyst continues to join in reactor, then add 14.8g methyl alcohol, at 200 DEG C, under 4.0MPa, stirring reaction 0.5h, filters out catalyst again, by product stratification, gets upper liquid and namely obtains coal flotation biodiesel.By analysis, this fatty acid methyl esters in biodiesel is 64.1%, dialycerides fat acid and esters content 10.0%, fatty acid monoglyceride content 23.9%, fatty acid triglyceride 2.0%.
Get Huozhou, Shanxi pit coal sample 152.3g(moisture 1.50%, ash content 12.36%), adopt XFD-1.5 flotation device to carry out flotation, coal-water fluid concentration 100g/L, joins in the coal slurry of flotation cell by 0.23g coal flotation biodiesel, stirs 2min, adjust flotation device rotating speed 1800r/min, aeration quantity 0.25m
3/ (m
2min), bubble 3min is scraped in flotation, cleaned coal and tail coal vacuum filtration, then dry 24h in 75 DEG C of thermostatic drying chambers respectively, finally quick ashing in Muffle furnace.Floatation clean coal productive rate 93.03%, cleans ash 10.39%, tail coal productive rate 6.97 %, tail coal ash content 33.72 %.
embodiment 4:
Get abandoned oil 41.8g and methyl alcohol 29.7g that free fatty and fatty acid triglyceride content are respectively 58% and 42%, join in 100mL batch reactor and mix, then add 4.2g mesopore super acids SO
4 2-/ ZrO
2-SiO
2(specific area is 450m to catalyst
2/ g, aperture is 3.9nm), at 200 DEG C, stirring reaction 3h under 6.5MPa, filter out catalyst after reaction, by product stratification.Get upper liquid and catalyst continues to join in reactor, then add 29.7g methyl alcohol, at 200 DEG C, under 4.0MPa, stirring reaction 1h, filters out catalyst again, by product stratification, gets upper liquid and namely obtains coal flotation biodiesel.By analysis, this fatty acid methyl esters in biodiesel is 86.7%, dialycerides fat acid and esters content 3.3%, fatty acid monoglyceride content 9.8%, fatty acid triglyceride 0.2%.
Get Shanxi the Lushui River peace pit coal sample 150.7g(moisture 0.46%, ash content 30.36%), adopt XFD-1.5 flotation device to carry out flotation, coal-water fluid concentration 100g/L, joins in the coal slurry of flotation cell by 0.33g coal flotation biodiesel, stirs 2min, adjust flotation device rotating speed 1800r/min, aeration quantity 0.25m
3/ (m
2min), bubble 3min is scraped in flotation, cleaned coal and tail coal vacuum filtration, then dry 24h in 75 DEG C of thermostatic drying chambers respectively, finally quick ashing in Muffle furnace.Floatation clean coal productive rate 82.09%, cleans ash 19.41%, tail coal productive rate 17.91 %, tail coal ash content 79.57 %.
embodiment 5:
Get abandoned oil 41.8g and methyl alcohol 29.0g that free fatty and fatty acid triglyceride content are respectively 32% and 68%, join in 100mL batch reactor and mix, then add 2.1g mesopore super acids SO
4 2-/ ZrO
2-SiO
2(specific area is 450m to catalyst
2/ g, aperture is 3.9nm), at 160 DEG C, stirring reaction 2.5h under 1.2MPa, filter out catalyst after reaction, by product stratification.Get upper liquid and catalyst continues to join in reactor, then add 29.0g methyl alcohol, at 200 DEG C, under 4.0MPa, stirring reaction 0.5h, filters out catalyst again, by product stratification, gets upper liquid and namely obtains coal flotation biodiesel.By analysis, this fatty acid methyl esters in biodiesel is 77.8%, dialycerides fat acid and esters content 5.6%, fatty acid monoglyceride content 15.4%, fatty acid triglyceride 1.2%.
Get Yima, henan Province pit coal sample 151.1g(moisture 0.73%, ash content 22.82%), adopt XFD-1.5 flotation device to carry out flotation, coal-water fluid concentration 100g/L, joins in the coal slurry of flotation cell by 0.14g coal flotation biodiesel, stirs 2min, adjust flotation device rotating speed 1800r/min, aeration quantity 0.25m
3/ (m
2min), bubble 3min is scraped in flotation, cleaned coal and tail coal vacuum filtration, then dry 24h in 75 DEG C of thermostatic drying chambers respectively, finally quick ashing in Muffle furnace.Floatation clean coal productive rate 82.96%, cleans ash 10.79%, tail coal productive rate 17.04 %, tail coal ash content 79.61 %.
embodiment 6:
By the step of embodiment 5, just by mesopore super acids SO
4 2-/ ZrO
2-SiO
2the quantitative change of catalyst is 3.1g, and reaction temperature becomes 200 DEG C, and other conditions are constant, obtained coal flotation biodiesel.By analysis, this fatty acid methyl esters in biodiesel is 79.5%, dialycerides fat acid and esters content 5.1%, fatty acid monoglyceride content 14.6%, fatty acid triglyceride 0.8%.
By the float test step of embodiment 5, condition is constant, floatation clean coal productive rate 83.77%, cleans ash 10.58%, tail coal productive rate 16.23 %, tail coal ash content 79.89 %.
embodiment 7:
Get abandoned oil 41.8g and methyl alcohol 29.0g that free fatty and fatty acid triglyceride content are respectively 25% and 75%, join in 100mL batch reactor and mix, then add 3.1g mesopore super acids SO
4 2-/ ZrO
2-SiO
2(specific area is 583m to catalyst
2/ g, aperture is 6.2nm), at 160 DEG C, stirring reaction 2.5h under 1.2MPa, filter out catalyst after reaction, by product stratification.Get upper liquid and catalyst continues to join in reactor, then add 29.0g methyl alcohol, at 170 DEG C, under 1.2MPa, stirring reaction 1h, filters out catalyst again, by product stratification, gets upper liquid and namely obtains coal flotation biodiesel.By analysis, this fatty acid methyl esters in biodiesel is 73.6%, dialycerides fat acid and esters content 6.5%, fatty acid monoglyceride content 20.5%, fatty acid triglyceride 0.4%.
Get Taiyuan Coal Preparation Plant coal sample 156.1g(moisture 3.87%, ash content 20.34%), adopt XFD-1.5 flotation device to carry out flotation, coal-water fluid concentration 100g/L, joins in the coal slurry of flotation cell by 0.45g coal flotation biodiesel, stirs 2min, adjust flotation device rotating speed 1800r/min, aeration quantity 0.25m
3/ (m
2min), bubble 3min is scraped in flotation, cleaned coal and tail coal vacuum filtration, then dry 24h in 75 DEG C of thermostatic drying chambers respectively, finally quick ashing in Muffle furnace.Floatation clean coal productive rate 85.96%, cleans ash 10.95%, tail coal productive rate 14.04 %, tail coal ash content 75.63 %.
embodiment 8:
By the step of embodiment 7, just free fatty and fatty acid triglyceride content are become 57% and 43% respectively, reaction pressure becomes 5MPa, and other conditions are constant, obtained coal flotation biodiesel.By analysis, this fatty acid methyl esters in biodiesel is 95.5%, dialycerides fat acid and esters content 1.3%, fatty acid monoglyceride content 3.2%, and fatty acid triglyceride does not detect.
By the float test step of embodiment 7, condition is constant, floatation clean coal productive rate 88.32%, cleans ash 11.78%, tail coal productive rate 11.68 %, tail coal ash content 80.12 %.
Claims (1)
1. the preparation method for the biodiesel of coal flotation, it is characterized in that: described biodiesel is made up of fatty acid methyl ester, fatty acid monoglyceride, dialycerides fat acid esters and fatty acid triglyceride, wherein said fatty acid methyl ester is 65.8%-68.8%, described fatty acid monoglyceride content is 24.1%-24.4%, described dialycerides fat acid and esters content 6.6%-8.4%, described fatty acid triglyceride content is 0.2%-1.7%; The preparation method of described biodiesel is: be raw material with abandoned oil, and obtain biodiesel through catalytic esterification, catalyst is wherein mesopore super acids solid catalyst, and obtained biodiesel is directly used in the flotation of coal as flotation agent; Concrete preparation technology is:
Step (1), band stir batch reactor in, by molar ratio of methanol to oil 10-20:1 by methyl alcohol and abandoned oil mixing, add the mesoporous solids super acidic catalyst of 5-10% abandoned oil quality again, reaction temperature 120-200 DEG C, reaction pressure 0.1-6.5MPa, reaction time 0.5-3h, filters out catalyst after reaction, by product stratification;
Step (2), after the product layering in step (1), get upper liquid and catalyst continues to join in reactor, add the methyl alcohol with above-mentioned steps (1) moderate again, at 150-200 DEG C, 0.5-1h is reacted under 0.5-4MPa, filter out catalyst after reaction, by product stratification, get upper liquid and namely obtain biodiesel;
Described mesoporous solids super acidic catalyst is mesoporous silica-zirconia or porous zirconia load SO4
2-catalyst, specific area is 200-600 m
2/ g, aperture is 1.6-6.4nm.
2. the preparation method of a kind of biodiesel for coal flotation according to claim 1, is characterized in that: the content of abandoned oil free fatty acid used in preparation method is 2%-60%, and fatty acid triglyceride content is 40%-98%.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103509587B (en) * | 2013-09-26 | 2014-12-10 | 太原理工大学 | Method for preparing coal flotation agent by using animal and plant grease and waste oil |
| CN103497840B (en) * | 2013-10-09 | 2014-11-26 | 太原理工大学 | Method for comprehensively utilizing abandoned oil in coking industries |
| CN108160337A (en) * | 2017-12-27 | 2018-06-15 | 安徽理工大学 | A kind of method that coal slime flotation collector is prepared using agricultural crop straw |
| CN110918261A (en) * | 2018-09-19 | 2020-03-27 | 中蓝连海设计研究院有限公司 | Flotation coal slime collecting agent and preparation method and application thereof |
| CN110681493B (en) * | 2019-11-21 | 2021-09-03 | 重庆智诚生物质新材料有限责任公司 | Efficient flotation collector for coal |
| CN112844852A (en) * | 2021-01-06 | 2021-05-28 | 河南资环检测科技有限公司 | Electrolytic aluminum carbon residue decarburization collecting agent and preparation process thereof |
| CN114870999B (en) * | 2022-05-07 | 2023-06-27 | 南方科技大学 | Coal flotation reagent, preparation method thereof and coal flotation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029241A (en) * | 2006-02-28 | 2007-09-05 | 中国石油化工股份有限公司 | Production of biological diesel-oil |
| CN101263218A (en) * | 2005-09-16 | 2008-09-10 | 法国石油公司 | Method for making fatty acid ethyl esters from triglycerides and alcohols |
| CN101307263A (en) * | 2008-07-14 | 2008-11-19 | 河南润恒生物能源有限公司 | Biodiesel and method for preparing same |
| CN101411985A (en) * | 2008-11-28 | 2009-04-22 | 河南润恒生物能源有限公司 | Biodiesel composite catalyst and preparation method thereof |
| CN102172565A (en) * | 2010-12-10 | 2011-09-07 | 太原理工大学 | Method for floating coal by using modified waste oil as flotation agent |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100351351C (en) * | 2005-01-31 | 2007-11-28 | 中国石油化工股份有限公司 | Fuel composition for IC engine |
| CN100424152C (en) * | 2005-11-09 | 2008-10-08 | 福建中德科技股份有限公司 | Method for synthesis of bio-diesel oil with monomer acids as main raw materials |
| CN101012392B (en) * | 2007-01-22 | 2010-05-19 | 暨南大学 | Method of removing soap and dissociative glycerin in biological diesel oil |
| US7906665B2 (en) * | 2007-10-30 | 2011-03-15 | Iowa State University Research Foundation, Inc. | Solid catalyst system for biodiesel production |
| CN101230309B (en) * | 2008-01-11 | 2010-04-07 | 四川大学 | Method for preparing biodiesel by lowering value of high acid palm oil |
| CN101327437B (en) * | 2008-07-22 | 2011-01-05 | 西安交通大学 | Microwave-absorption type solid acid catalyst and use thereof in preparing biodiesel |
| JP4995249B2 (en) * | 2008-11-21 | 2012-08-08 | ローム アンド ハース カンパニー | Improved catalyst for transesterification process |
| CN101638611A (en) * | 2009-08-14 | 2010-02-03 | 浙江工业大学 | Method for preparing biodiesel by extracting, esterifying and coupling high acid value oil |
| CN101705153A (en) * | 2009-11-18 | 2010-05-12 | 广西科学院 | Method for preparing biodiesel by high acid value waste oil |
| CN102008968B (en) * | 2010-11-11 | 2012-11-07 | 太原理工大学 | Solid superacid mesoporous material and preparation method thereof |
| CN102343273A (en) * | 2011-07-20 | 2012-02-08 | 北京工业大学 | Preparation method of loaded solid catalyst used in deacidification of high-acid-value grease |
-
2012
- 2012-03-23 CN CN201210079628.6A patent/CN102847612B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101263218A (en) * | 2005-09-16 | 2008-09-10 | 法国石油公司 | Method for making fatty acid ethyl esters from triglycerides and alcohols |
| CN101029241A (en) * | 2006-02-28 | 2007-09-05 | 中国石油化工股份有限公司 | Production of biological diesel-oil |
| CN101307263A (en) * | 2008-07-14 | 2008-11-19 | 河南润恒生物能源有限公司 | Biodiesel and method for preparing same |
| CN101411985A (en) * | 2008-11-28 | 2009-04-22 | 河南润恒生物能源有限公司 | Biodiesel composite catalyst and preparation method thereof |
| CN102172565A (en) * | 2010-12-10 | 2011-09-07 | 太原理工大学 | Method for floating coal by using modified waste oil as flotation agent |
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