CN105445148A - Method for rapidly determining content of fatty acid methyl ester in biodiesel - Google Patents
Method for rapidly determining content of fatty acid methyl ester in biodiesel Download PDFInfo
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- CN105445148A CN105445148A CN201510584350.1A CN201510584350A CN105445148A CN 105445148 A CN105445148 A CN 105445148A CN 201510584350 A CN201510584350 A CN 201510584350A CN 105445148 A CN105445148 A CN 105445148A
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- biodiesel
- ester content
- kinematic viscosity
- ester
- fatty acid
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Abstract
The invention relates to a method for rapidly determining the content of fatty acid methyl ester in biodiesel. The method particularly comprises the following steps: (A) carrying out timed sampling in the reaction process of the biodiesel, and measuring the kinematic viscosity of a biodiesel sample; (B) determining the ester content of the biodiesel sample; (C) drawing standard curves of the kinematic viscosity and the ester content according to the obtained viscosity and ester content; and (D) measuring the kinematic viscosity in the reaction process of the biodiesel by optionally sampling, and reading corresponding ester content according to the numerical value of the kinematic viscosity on the standard curve. The method has the advantages that the content of the fatty acid methyl ester in the biodiesel can be rapidly determined, and the correlation analysis does not need to be carried out through a chromatography; the method can be directly applied to the determination of fatty acid methyl ester in the industrial production process and is convenient and rapid.
Description
Technical field
The present invention relates to field of biodiesel oil, be specifically related to the method for a kind of Fast Measurement Biodiesel Fatty acid methyl ester content.
Background technology
At present, biodiesel and fatty acid methyl ester, refer to the hydrophyte greases such as oil crops, Wild oil plant and engineering microalgae and animal fat, food garbage wet goods to be the reproducibility diesel fuel of the replaced petrifaction diesel that feedstock oil is made by ester exchange process.Along with worldwide energy shortage and people are to the pay attention to day by day of environmental protection, environmentally friendly as one, nontoxic, the reproducible alternative fuel of biodiesel, has been subject to countries in the world and has more and more paid close attention to.
An important indicator of evaluation biodiesel fuel quality quality is the ester content in biodiesel, investigates the content of fatty acid methyl ester in biodiesel, generally adopts chromatography to carry out correlation analysis according to GB.But it is higher to buy chromatogram cost, and detection time is long, and testing cost is high, testing process bothers, and general enterprises is difficult to bear, and key is unfavorable for on-line monitoring.And be unfavorable for conveniently monitoring response situation in actual production.Therefore in existing commercial process, also need a kind of Fast Measurement fatty acid methyl ester method to monitor production.
Summary of the invention
Object of the present invention is exactly for above-mentioned deficiency, and provides the method for a kind of Fast Measurement Biodiesel Fatty acid methyl ester content.
Concrete steps of the present invention are as follows:
A. timing sampling in biodiesel course of reaction, carries out kinematic viscosity mensuration by Bio-diesel Samples,
B. above-mentioned Bio-diesel Samples is measured ester content simultaneously,
C. the above-mentioned viscosity that draws and ester content are drawn out the typical curve of viscosity ester content,
D. then sample arbitrarily in biodiesel course of reaction and measure its kinematic viscosity, read the ester content of its correspondence by the numerical value of kinematic viscosity on typical curve.
Take viscosity as horizontal ordinate, take ester content as ordinate, draw out the typical curve of kinematic viscosity and ester content, ester content computing formula is drawn by typical curve, then in biodiesel course of reaction, arbitrarily sampling measures its kinematic viscosity, then kinematic viscosity is inputed in computing formula and calculate ester content; Computing formula is
Y=0.0008X
2-0.0667X+1.2357, Y are ester contents, and X is viscosity, goodness of fit R
2=0.9992.
Advantage of the present invention is: the present invention can Fast Measurement Biodiesel Fatty acid methyl ester content, without the need to carrying out correlation analysis by chromatography, can to directly apply in commercial process fatty acid methyl ester and measuring, convenient and swift.
Accompanying drawing explanation
Fig. 1 is the canonical plotting of kinematic viscosity and ester content.
Embodiment
Specific embodiment one
On biodiesel pilot production line, mol ratio is methyl alcohol and the waste oil of 4: 1, and the biology enzyme (middle Xing Nonggu Hubei company limited) based on oil quality 1% is housed, and temperature controls, at 40 DEG C, to carry out esterification and ester exchange reaction.In 8h sampling, measuring its kinematic viscosity according to the test method GB/T265 in GB GB/T20828-2014 is 7.18, and measuring its ester content according to the test method NB/SH/T0831 in GB GB/T20828-2014 is 78.307%, according to computing formula Y=0.0008X
2-0.0667X+1.2357, calculating ester content is 79.804%, and similarity is 98.12%.
Specific embodiment two
On biodiesel pilot production line, mol ratio is methyl alcohol and the waste oil of 4: 1, and the biology enzyme (middle Xing Nonggu Hubei company limited) based on oil quality 1% is housed, and temperature controls, at 40 DEG C, to carry out esterification and ester exchange reaction.Sample at 12h, measuring its kinematic viscosity according to the test method GB/T265 in GB GB/T20828-2014 is 5.83, measuring its ester content according to the test method NB/SH/T0831 in GB GB/T20828-2014 is 86.485%, according to computing formula Y=0.0008X
2-0.0667X+1.2357, calculating ester content is 87.403%, and similarity is 98.95%.
Specific embodiment three
On biodiesel pilot production line, mol ratio is methyl alcohol and the waste oil of 4: 1, and the biology enzyme (middle Xing Nonggu Hubei company limited) based on oil quality 1% is housed, and temperature controls, at 40 DEG C, to carry out esterification and ester exchange reaction.Sample at 16h, measuring its kinematic viscosity according to the test method GB/T265 in GB GB/T20828-2014 is 4.99, measuring its ester content according to the test method NB/SH/T0831 in GB GB/T20828-2014 is 91.977%, according to computing formula Y=0.0008X
2-0.0667X+1.2357, calculating ester content is 92.279%, and similarity is 99.67%.
Specific embodiment four
On biodiesel pilot production line, mol ratio is methyl alcohol and the waste oil of 4: 1, and the biology enzyme (middle Xing Nonggu Hubei company limited) based on oil quality 1% is housed, and temperature controls, at 40 DEG C, to carry out esterification and ester exchange reaction.Sample at 20h, measuring its kinematic viscosity according to the test method GB/T265 in GB GB/T20828-2014 is 4.78, measuring its ester content according to the test method NB/SH/T0831 in GB GB/T20828-2014 is 93.767%, according to computing formula Y=0.0008X
2-0.0667X+1.2357, calculating ester content is 93.515%, and similarity is 100.27%.
Claims (2)
1. a method for Fast Measurement Biodiesel Fatty acid methyl ester content, is characterized in that concrete steps are as follows:
A. timing sampling in biodiesel course of reaction, carries out kinematic viscosity mensuration by Bio-diesel Samples,
B. above-mentioned Bio-diesel Samples is measured ester content simultaneously,
C. the above-mentioned viscosity that draws and ester content are drawn out the typical curve of kinematic viscosity ester content,
D. then sample arbitrarily in biodiesel course of reaction and measure its kinematic viscosity, read the ester content of its correspondence by the numerical value of kinematic viscosity on typical curve.
2. the method for Fast Measurement biodiesel ester content according to claim 1, it is characterized in that taking viscosity as horizontal ordinate, take ester content as ordinate, draw out the typical curve of viscosity and ester content, ester content computing formula is drawn by typical curve, then in biodiesel course of reaction, arbitrarily sampling measures its kinematic viscosity, then kinematic viscosity is inputed in computing formula and calculate ester content; Computing formula is
Y=0.0008X
2-0.0667X+1.2357, Y are ester contents, and X is kinematic viscosity, goodness of fit R
2=0.9992.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510584350.1A CN105445148A (en) | 2015-09-15 | 2015-09-15 | Method for rapidly determining content of fatty acid methyl ester in biodiesel |
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| CN201510584350.1A CN105445148A (en) | 2015-09-15 | 2015-09-15 | Method for rapidly determining content of fatty acid methyl ester in biodiesel |
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| CN105445148A true CN105445148A (en) | 2016-03-30 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694450A (en) * | 2009-10-16 | 2010-04-14 | 长安大学 | Method for detecting dose of polymers in modified asphalt based on viscosity-temperature curve |
| CN102507377A (en) * | 2011-09-29 | 2012-06-20 | 中国航空工业集团公司北京航空材料研究院 | Method for determining concentration range of iron siloxane complexes in fluorosilicone oil |
| CN103163044A (en) * | 2011-12-19 | 2013-06-19 | 马涌 | Method of detecting illegal cooking oil by measuring cis-trans conformational changes of unsaturated fattyacid |
| CN103217360A (en) * | 2013-04-10 | 2013-07-24 | 中国石油天然气股份有限公司 | Method for detecting molecular weight of hydrolyzed polyacrylamide |
| CN103792162A (en) * | 2013-12-31 | 2014-05-14 | 广西玉柴机器股份有限公司 | Method for detecting amount of diesel oil mixed in machine oil |
| CN104237447A (en) * | 2014-08-29 | 2014-12-24 | 浙江工业大学 | Method for detecting contents of glyceride and free fatty acid in biodiesel |
-
2015
- 2015-09-15 CN CN201510584350.1A patent/CN105445148A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694450A (en) * | 2009-10-16 | 2010-04-14 | 长安大学 | Method for detecting dose of polymers in modified asphalt based on viscosity-temperature curve |
| CN102507377A (en) * | 2011-09-29 | 2012-06-20 | 中国航空工业集团公司北京航空材料研究院 | Method for determining concentration range of iron siloxane complexes in fluorosilicone oil |
| CN103163044A (en) * | 2011-12-19 | 2013-06-19 | 马涌 | Method of detecting illegal cooking oil by measuring cis-trans conformational changes of unsaturated fattyacid |
| CN103217360A (en) * | 2013-04-10 | 2013-07-24 | 中国石油天然气股份有限公司 | Method for detecting molecular weight of hydrolyzed polyacrylamide |
| CN103792162A (en) * | 2013-12-31 | 2014-05-14 | 广西玉柴机器股份有限公司 | Method for detecting amount of diesel oil mixed in machine oil |
| CN104237447A (en) * | 2014-08-29 | 2014-12-24 | 浙江工业大学 | Method for detecting contents of glyceride and free fatty acid in biodiesel |
Non-Patent Citations (4)
| Title |
|---|
| 刘畅: "粘度法测定废水中聚丙烯酰胺的浓度", 《吉林广播电视大学学报》 * |
| 刘良政等: "黏度法快速测试生物柴油连续生产酯交换反应转化率", 《中国油脂》 * |
| 李泉华: "《热处理400问》", 31 March 2002 * |
| 梁金善等: "用粘度法测定助沉剂含量", 《氯碱工业》 * |
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