CN101016473B - Method of producing biological fuel oil from poor oil - Google Patents
Method of producing biological fuel oil from poor oil Download PDFInfo
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- CN101016473B CN101016473B CN2007100201848A CN200710020184A CN101016473B CN 101016473 B CN101016473 B CN 101016473B CN 2007100201848 A CN2007100201848 A CN 2007100201848A CN 200710020184 A CN200710020184 A CN 200710020184A CN 101016473 B CN101016473 B CN 101016473B
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- oil
- fatty acids
- free fatty
- separating
- methyl ester
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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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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
The invention discloses a preparing method of biological fuel oil with poor oil in chemical industry technical domain, which comprises the following steps: removing water and impurity of raw oil; separating oil and extricate aliphatic acid through vacuum distillation; reacting the oil with carbinol through base catalysis method; getting aliphatic acid methyl ester; reacting extricate aliphatic acid with carbinol through acid catalyst; getting aliphatic acid methyl ester; merging the rough aliphatic acid methyl ester; washing; distilling; refining; getting the product. This invention either increases the adaptability of craft, or improves the availability ratio of raw material.
Description
Technical field:
The invention belongs to chemical technology field, particularly a kind of method of from poor quality oil, extracting biofuel oil.
Background technology:
At present, be the raw material production biofuel oil with the poor quality oil, generally to adopt to add alkali and handle with depickling in carrying out, to remove the free fatty acids in the poor quality oil to poor quality oil.Because the existence of free fatty acids can produce saponification, cause catalyst levels increase, catalytic efficiency (to reduce, the transformation efficiency of reaction is reduced.Therefore, must remove.But; In the poor quality oil free lipid acid not only content occupy bigger ratio, and free fatty acids itself also is the better raw material that generates fatty acid methyl ester, handles and not only can not make full use of free fatty acids and carry out depickling; Cause wastage of material, but also increased the processing burden of waste liquid.Shortcomings such as therefore, this production technology exists production cost high, and the limited range of raw material is big, waste is many, and yield is low.
Summary of the invention
Technical problem to be solved by this invention is: to the deficiency of above-mentioned existing Technology, the method for all higher producing biological fuel oil from poor oil of a kind of raw material availability, catalytic rate and transformation efficiency is provided.Its technical scheme is: a kind of method of producing biological fuel oil from poor oil is characterized in that its process step is:
1) pre-treatment of raw material: dispel moisture and impurity in the raw oil;
2) separating of oil and free fatty acids: adopt the mode of vacuum distilling to carry out separating of oil and free fatty acids to removal of impurities and dehydrated raw material oil;
3) generation of fatty acid methyl ester: adopt base catalysis mode and methyl alcohol to react the generation fatty acid methyl ester to the oil after separating, adopt acid catalyst and methyl alcohol reaction to generate fatty acid methyl ester to the free fatty acids after separating;
4) purification of biofuel oil: the crude fatty acid methyl ester that above-mentioned two-way reaction is obtained combines, and washs distillation and makes with extra care, and promptly gets biofuel oil.
Its technique effect is: compared with prior art, the present invention makes oil separate with free fatty acids owing to handle through raw material being carried out vacuum distilling, makes its raw material that becomes the two-way reaction, and has adopted the operational path of corresponding two-way reaction.Therefore, improved the flexibility of technology on the one hand to raw material; Improve utilization ratio of raw materials on the other hand, reduced raw materials cost; Moreover reduced the acid number (acid number is a key index of biofuel oil, and this index of ordinary method is difficult to lower) of product, improved product production; And, make the postorder of product handle the also corresponding simplification that obtains through to the isolating in advance operation of raw material increase.
Fatty acid methyl ester through this process method is produced detects: its each item performance index reach biofuel oil company standard Q/STYZ01-2006.And through the feedback preferably that obtained on probation to this oil fuel, it is superior to petrifaction diesel aspect external combustion.
Embodiment
At first poor quality oil is removed by filter insoluble impurities,, then it is melted through hydrothermal method if poor quality oil is a solid; Impurity in waste oil process is filtered to remove; Then oil is heated to more than 100 ℃, stirs till not having the water vapor bubble to emerge, remove the moisture in deoiling.Crude oil after removal of impurities and the dehydration is pumped into carries out in the distillation tower oil and the separating of free fatty acids.At working pressure 3～5bar, under 244 ℃～250 ℃ conditions of distillation temperature, separated 30 minutes.Can reach in this technology the optimal separation of oil and free fatty acids.
Oil after separating and free fatty acids are carried out esterification generation fatty acid methyl ester as the raw material of two-way reaction respectively.Oil separately carries out alcoholysis reaction with methyl alcohol under the effect of alkaline catalysts, this oil is pumped in the reaction kettle, and 4.5: 1 the amount of methyl alcohol and molar equivalent of pressing adds methyl alcohol; Catalyzer one Pottasium Hydroxide is by 1.0% adding of the quality of oil, and temperature of reaction is controlled at about 70 ℃, behind the reaction 30min; Unnecessary methyl alcohol is distilled recovery; Add acid and catalyzer neutralization then, the washing standing separation is separated raw glycerine and crude fatty acid methyl ester.
Free fatty acids to after separating adopts acid catalyzed mode and methyl alcohol to react; Free fatty acids is pumped in the reaction kettle, adds methyl alcohol in methyl alcohol and 6: 1 ratio of free fatty acids mol ratio, catalyzer-sulfuric acid is pressed 1.5% of free fatty acids quality and is added; Temperature of reaction is controlled at about 45 ℃; Behind the reaction 4h, the same distillation mode that adopts with the base catalysis process is squeezed into drainer with unnecessary Methanol Recovery, in order to recycling.Catalyzer neutralizes through the mode that adds alkali, washes standing separation then, obtains crude fatty acid methyl ester.
The crude fatty acid methyl ester that above-mentioned two-way reaction is obtained combines; Through washing the glycerine that contains in the crude fatty acid methyl ester, methyl alcohol and catalyst separating are gone out; Again through vacuum distilling; Under 3～5bar vacuum tightness, extract the cut in 170 ℃ of-210 ℃ of scopes, promptly get the finished product-biofuel oil.Yield is 96%.
Claims (4)
1. the method for a producing biological fuel oil from poor oil is characterized in that its process step is:
1) pre-treatment of raw material: dispel moisture and impurity in the raw oil;
2) separating of oil and free fatty acids: adopt the mode of vacuum distilling to carry out separating of oil and free fatty acids to removal of impurities and dehydrated raw material oil;
3) generation of fatty acid methyl ester: adopt base catalysis mode and methyl alcohol to react the generation fatty acid methyl ester to the oil after separating, adopt acid catalyst and methyl alcohol reaction to generate fatty acid methyl ester to the free fatty acids after separating;
4) purification of biofuel oil: the crude fatty acid methyl ester that above-mentioned two-way reaction is obtained combines, and washs distillation and makes with extra care, and promptly gets biofuel oil.
2. the method for a kind of producing biological fuel oil from poor oil according to claim 1; It is characterized in that: the separation processes condition that the mode of said employing vacuum distilling is carried out oil and free fatty acids is: pressure 3～5bar; 244 ℃～250 ℃ of distillation temperatures were separated 30 minutes.
3. the method for a kind of producing biological fuel oil from poor oil according to claim 1; It is characterized in that: the said processing condition that adopt base catalysis mode and methyl alcohol to react to the oil after separating are: methyl alcohol and molar equivalent 4.5: 1; 70 ℃ of temperature; Pottasium Hydroxide adds reaction times 30min by 1.0% of oil quality.
4. the method for a kind of producing biological fuel oil from poor oil according to claim 1; It is characterized in that: the said processing condition that adopt acid catalysis mode and methyl alcohol to react to the free fatty acids after separating are: methyl alcohol and free fatty acids mol ratio 6: 1; 45 ℃ of temperature; Sulfuric acid is pressed 1.5% of free fatty acids quality and is added reaction times 4h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100201848A CN101016473B (en) | 2007-03-02 | 2007-03-02 | Method of producing biological fuel oil from poor oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100201848A CN101016473B (en) | 2007-03-02 | 2007-03-02 | Method of producing biological fuel oil from poor oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101016473A CN101016473A (en) | 2007-08-15 |
| CN101016473B true CN101016473B (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100201848A Expired - Fee Related CN101016473B (en) | 2007-03-02 | 2007-03-02 | Method of producing biological fuel oil from poor oil |
Country Status (1)
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| CN (1) | CN101016473B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007052065A1 (en) * | 2007-10-30 | 2009-05-07 | Bayer Technology Services Gmbh | Continuous process for heterogeneously catalyzed esterification of fatty acids |
| CN101475824B (en) * | 2009-01-22 | 2012-09-19 | 王立 | Wash-free, energy-saving and environment friendly technological process and system apparatus for producing clean fuel oil |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20060082A1 (en) * | 2006-01-19 | 2007-07-20 | Maurizio Germani | PROCESS FOR THE PREPARATION OF BIODIESEL |
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2007
- 2007-03-02 CN CN2007100201848A patent/CN101016473B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITMI20060082A1 (en) * | 2006-01-19 | 2007-07-20 | Maurizio Germani | PROCESS FOR THE PREPARATION OF BIODIESEL |
Non-Patent Citations (1)
| Title |
|---|
| 谭力红.废餐饮油制备生物柴油研究现状与应用前景.《化工生产与技术》.2007,第14卷(第1期),2.2节. * |
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| CN101016473A (en) | 2007-08-15 |
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Granted publication date: 20120418 Termination date: 20180302 |