CN104745312A - Method for preparing biodiesel from rice bran oil - Google Patents
Method for preparing biodiesel from rice bran oil Download PDFInfo
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- CN104745312A CN104745312A CN201510162540.4A CN201510162540A CN104745312A CN 104745312 A CN104745312 A CN 104745312A CN 201510162540 A CN201510162540 A CN 201510162540A CN 104745312 A CN104745312 A CN 104745312A
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- Prior art keywords
- rice pollard
- pollard oil
- methyl alcohol
- oil
- biofuel
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
- C11C3/00—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom
- C11C3/04—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom by esterification of fats or fatty oils
- C11C3/10—Ester interchange
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/02—Refining fats or fatty oils by chemical reaction
- C11B3/04—Refining fats or fatty oils by chemical reaction with acids
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/12—Refining fats or fatty oils by distillation
-
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention belongs to the technical field of rice bran oil and particularly relates to a method for preparing biodiesel form rice bran oil. The method for preparing biodiesel form the rice bran oil comprises the following steps: (1) degumming; (2) dewaxing; (4) performing secondary ester exchange reaction; (5) washing, distilling and filtering; (6) neutralizing with glycerol. According to the method, the rice bran oil is sufficiently utilized to produce high-quality biodiesel, so that the production cost is low and the yield is high.
Description
Technical field
The invention belongs to the technical field of Rice pollard oil, be specifically related to a kind of method adopting Rice pollard oil to prepare biofuel.
Background technology
Along with the ecological environmental pollution day by day reducing and cause of the fossil energy reserves such as coal oil is day by day serious, the renewable energy source that wind energy, sun power, biomass energy etc. clean more and more receives the concern of people.Biofuel adopts animal-plant oil and short chain alcohol to be prepared through transesterification reaction.Take natural fats and oils as the biofuel of raw material production, be not only a kind of reproducible biomass energy, and be a kind of environmentally compatible fuels.During with the edible oil of refining as raw material production biofuel, high cost, makes it be difficult to promote.
One of Main By product that Rice pollard oil obtains when being paddy processing polished rice.The rice bran that massfraction is 6% ~ 10% can be obtained in the process of Rice producing, in rice bran, the massfraction of Rice pollard oil is 16% ~ 32%. due to the existence of active fat hydrolase, make Rice pollard oil less stable, can not be eaten so rice bran prepares massfraction 60% ~ 70% in oil plant, therefore current domestic rice bran product is all for poultry and livestock feed.The feature that Rice pollard oil has, becomes a kind of raw material of good production biofuel.
Summary of the invention
The object of the invention is to the defect for above-mentioned existence and provide a kind of method adopting Rice pollard oil to prepare biofuel, the method make use of Rice pollard oil fully, produces high-quality biofuel, and production cost is low, and productive rate is high.
Technical scheme of the present invention is: a kind of method adopting Rice pollard oil to prepare biofuel, comprises the following steps:
(1) come unstuck: Rice pollard oil is warming up to 80 DEG C, add the phosphoric acid of Rice pollard oil weight 0.35%, wherein the massfraction of phosphoric acid is 80%, stirs 30 minutes; Add the aluminum potassium sulfate solution of Rice pollard oil weight 8% again, wherein the massfraction of aluminum potassium sulfate solution is 5%, stirs 15 minutes; Leave standstill 2 hours after finally cooling the temperature to room temperature, upper liquid is shifted out for subsequent use;
(2) dewax: the upper liquid of step (1) is cooled to 8 DEG C, take out suction filtration, obtain refining rice bran oil;
(3) transesterification reactions: first Rice pollard oil is added in an esterifier, then adds methyl alcohol, wherein the weight part ratio of methyl alcohol and Rice pollard oil is 5 ~ 6.5:1; Add the potassium hydroxide that catalyst quality mark is 0.7 ~ 0.8% simultaneously, stir and reactant is mixed; Carry out reaction 1.5 hours under being finally placed in 68 DEG C of conditions, obtain a reactant of esterification;
(4) secondary transesterification reaction: first by a reactant of esterification stratification, upper strata coarse biodiesel and lower floor's glycerine; Then be added in secondary esterifier by coarse biodiesel, then add methyl alcohol and potassium hydroxide, wherein the weight part ratio of methyl alcohol and Rice pollard oil is 0.6 ~ 1.95:1; Finally stir under being placed in 70 DEG C of conditions and react 1.5 hours, obtain secondary reactant of esterification;
(5) wash, distill, filter: by secondary reactant of esterification stratification, upper strata biofuel and lower floor's glycerine; By upper strata biofuel after the solution washing of 85 DEG C, centrifugally to anhydrate; The biofuel of gained is carried out distillation and remove methyl alcohol; Eventually pass cold filtration and obtain refined biometric diesel oil;
(6) glycerine neutralization: be the sulfuric acid neutralization of 98% by lower floor's glycerine massfraction of a transesterification reaction and secondary transesterification reaction gained, centrifugation obtains acidification oil, raw glycerine and solid sodium sulfate.
In described step (3), the weight part ratio of methyl alcohol and Rice pollard oil is 5:1.
In described step (4), the weight part ratio of methyl alcohol and Rice pollard oil is 0.6:1.
In described step (3), the weight part ratio of methyl alcohol and Rice pollard oil is 6:1.
In described step (4), the weight part ratio of methyl alcohol and Rice pollard oil is 1.8:1.
In described step (3), the weight part ratio of methyl alcohol and Rice pollard oil is 6.5:1.
In described step (4), the weight part ratio of methyl alcohol and Rice pollard oil is 1.95:1.
In described step (3), the massfraction of catalyzer potassium hydroxide is 0.75%.
Beneficial effect of the present invention is: adopt Rice pollard oil of the present invention to prepare the method for biofuel, and the yield of biofuel is 99.7%; Massfraction be 75% glycerine productive rate be 16%; The productive rate of acidification oil is 1.36%.The density (15 DEG C) of gained biofuel is 893kg/m
3, viscosity (40 DEG C) is 3.96mm
2/ s, flash-point is 216 DEG C, and sulfur nutrient is 0.007%, and cetane value is 53, and residual carbon massfraction is 0.19%.
In sum, the method for the invention make use of Rice pollard oil fully, and produce high-quality biofuel, production cost is low, and productive rate is high.
Embodiment
Below by embodiment, that the present invention will be described in detail is as follows.
Embodiment 1
Adopt Rice pollard oil to prepare a method for biofuel, comprise the following steps:
(1) come unstuck: Rice pollard oil is warming up to 80 DEG C, add the phosphoric acid of Rice pollard oil weight 0.35%, wherein the massfraction of phosphoric acid is 80%, stirs 30 minutes; Add the aluminum potassium sulfate solution of Rice pollard oil weight 8% again, wherein the massfraction of aluminum potassium sulfate solution is 5%, stirs 15 minutes; Leave standstill 2 hours after finally cooling the temperature to room temperature, upper liquid is shifted out for subsequent use;
(2) dewax: the upper liquid of step (1) is cooled to 8 DEG C, take out suction filtration, obtain refining rice bran oil;
(3) transesterification reactions: first Rice pollard oil is added in an esterifier, then adds methyl alcohol, wherein the weight part ratio of methyl alcohol and Rice pollard oil is 5:1; Add the potassium hydroxide that catalyst quality mark is 0.75% simultaneously, stir and reactant is mixed; Carry out reaction 1.5 hours under being finally placed in 68 DEG C of conditions, obtain a reactant of esterification;
(4) secondary transesterification reaction: first by a reactant of esterification stratification, upper strata coarse biodiesel and lower floor's glycerine; Then be added in secondary esterifier by coarse biodiesel, then add methyl alcohol and potassium hydroxide, wherein the weight part ratio of methyl alcohol and Rice pollard oil is 0.6:1; Finally stir under being placed in 70 DEG C of conditions and react 1.5 hours, obtain secondary reactant of esterification;
(5) wash, distill, filter: by secondary reactant of esterification stratification, upper strata biofuel and lower floor's glycerine; By upper strata biofuel after the solution washing of 85 DEG C, centrifugally to anhydrate; The biofuel of gained is carried out distillation and remove methyl alcohol; Eventually pass cold filtration and obtain refined biometric diesel oil;
(6) glycerine neutralization: be the sulfuric acid neutralization of 98% by lower floor's glycerine massfraction of a transesterification reaction and secondary transesterification reaction gained, centrifugation obtains acidification oil, raw glycerine and solid sodium sulfate.
Embodiment 2
Adopt Rice pollard oil to prepare a method for biofuel, comprise the following steps:
(1) come unstuck: Rice pollard oil is warming up to 80 DEG C, add the phosphoric acid of Rice pollard oil weight 0.35%, wherein the massfraction of phosphoric acid is 80%, stirs 30 minutes; Add the aluminum potassium sulfate solution of Rice pollard oil weight 8% again, wherein the massfraction of aluminum potassium sulfate solution is 5%, stirs 15 minutes; Leave standstill 2 hours after finally cooling the temperature to room temperature, upper liquid is shifted out for subsequent use;
(2) dewax: the upper liquid of step (1) is cooled to 8 DEG C, take out suction filtration, obtain refining rice bran oil;
(3) transesterification reactions: first Rice pollard oil is added in an esterifier, then adds methyl alcohol, wherein the weight part ratio of methyl alcohol and Rice pollard oil is 6:1; Add the potassium hydroxide that catalyst quality mark is 0.7% simultaneously, stir and reactant is mixed; Carry out reaction 1.5 hours under being finally placed in 68 DEG C of conditions, obtain a reactant of esterification;
(4) secondary transesterification reaction: first by a reactant of esterification stratification, upper strata coarse biodiesel and lower floor's glycerine; Then be added in secondary esterifier by coarse biodiesel, then add methyl alcohol and potassium hydroxide, wherein the weight part ratio of methyl alcohol and Rice pollard oil is 1.8:1; Finally stir under being placed in 70 DEG C of conditions and react 1.5 hours, obtain secondary reactant of esterification;
(5) wash, distill, filter: by secondary reactant of esterification stratification, upper strata biofuel and lower floor's glycerine; By upper strata biofuel after the solution washing of 85 DEG C, centrifugally to anhydrate; The biofuel of gained is carried out distillation and remove methyl alcohol; Eventually pass cold filtration and obtain refined biometric diesel oil;
(6) glycerine neutralization: be the sulfuric acid neutralization of 98% by lower floor's glycerine massfraction of a transesterification reaction and secondary transesterification reaction gained, centrifugation obtains acidification oil, raw glycerine and solid sodium sulfate.
Embodiment 3
Adopt Rice pollard oil to prepare a method for biofuel, comprise the following steps:
(1) come unstuck: Rice pollard oil is warming up to 80 DEG C, add the phosphoric acid of Rice pollard oil weight 0.35%, wherein the massfraction of phosphoric acid is 80%, stirs 30 minutes; Add the aluminum potassium sulfate solution of Rice pollard oil weight 8% again, wherein the massfraction of aluminum potassium sulfate solution is 5%, stirs 15 minutes; Leave standstill 2 hours after finally cooling the temperature to room temperature, upper liquid is shifted out for subsequent use;
(2) dewax: the upper liquid of step (1) is cooled to 8 DEG C, take out suction filtration, obtain refining rice bran oil;
(3) transesterification reactions: first Rice pollard oil is added in an esterifier, then adds methyl alcohol, wherein the weight part ratio of methyl alcohol and Rice pollard oil is 6.5:1; Add the potassium hydroxide that catalyst quality mark is 0.8% simultaneously, stir and reactant is mixed; Carry out reaction 1.5 hours under being finally placed in 68 DEG C of conditions, obtain a reactant of esterification;
(4) secondary transesterification reaction: first by a reactant of esterification stratification, upper strata coarse biodiesel and lower floor's glycerine; Then be added in secondary esterifier by coarse biodiesel, then add methyl alcohol and potassium hydroxide, wherein the weight part ratio of methyl alcohol and Rice pollard oil is 1.95:1; Finally stir under being placed in 70 DEG C of conditions and react 1.5 hours, obtain secondary reactant of esterification;
(5) wash, distill, filter: by secondary reactant of esterification stratification, upper strata biofuel and lower floor's glycerine; By upper strata biofuel after the solution washing of 85 DEG C, centrifugally to anhydrate; The biofuel of gained is carried out distillation and remove methyl alcohol; Eventually pass cold filtration and obtain refined biometric diesel oil;
(6) glycerine neutralization: be the sulfuric acid neutralization of 98% by lower floor's glycerine massfraction of a transesterification reaction and secondary transesterification reaction gained, centrifugation obtains acidification oil, raw glycerine and solid sodium sulfate.
Claims (8)
1. adopt Rice pollard oil to prepare a method for biofuel, comprise the following steps:
(1) come unstuck: Rice pollard oil is warming up to 80 DEG C, add the phosphoric acid of Rice pollard oil weight 0.35%, wherein the massfraction of phosphoric acid is 80%, stirs 30 minutes; Add the aluminum potassium sulfate solution of Rice pollard oil weight 8% again, wherein the massfraction of aluminum potassium sulfate solution is 5%, stirs 15 minutes; Leave standstill 2 hours after finally cooling the temperature to room temperature, upper liquid is shifted out for subsequent use;
(2) dewax: the upper liquid of step (1) is cooled to 8 DEG C, take out suction filtration, obtain refining rice bran oil;
(3) transesterification reactions: first Rice pollard oil is added in an esterifier, then adds methyl alcohol, wherein the weight part ratio of methyl alcohol and Rice pollard oil is 5 ~ 6.5:1; Add the potassium hydroxide that catalyst quality mark is 0.7 ~ 0.8% simultaneously, stir and reactant is mixed; Carry out reaction 1.5 hours under being finally placed in 68 DEG C of conditions, obtain a reactant of esterification;
(4) secondary transesterification reaction: first by a reactant of esterification stratification, upper strata coarse biodiesel and lower floor's glycerine; Then be added in secondary esterifier by coarse biodiesel, then add methyl alcohol and potassium hydroxide, wherein the weight part ratio of methyl alcohol and Rice pollard oil is 0.6 ~ 1.95:1; Finally stir under being placed in 70 DEG C of conditions and react 1.5 hours, obtain secondary reactant of esterification;
(5) wash, distill, filter: by secondary reactant of esterification stratification, upper strata biofuel and lower floor's glycerine; By upper strata biofuel after the solution washing of 85 DEG C, centrifugally to anhydrate; The biofuel of gained is carried out distillation and remove methyl alcohol; Eventually pass cold filtration and obtain refined biometric diesel oil;
(6) glycerine neutralization: be the sulfuric acid neutralization of 98% by lower floor's glycerine massfraction of a transesterification reaction and secondary transesterification reaction gained, centrifugation obtains acidification oil, raw glycerine and solid sodium sulfate.
2. adopt Rice pollard oil to prepare the method for biofuel according to claim 1, it is characterized in that, in described step (3), the weight part ratio of methyl alcohol and Rice pollard oil is 5:1.
3. adopt Rice pollard oil to prepare the method for biofuel according to claim 2, it is characterized in that, in described step (4), the weight part ratio of methyl alcohol and Rice pollard oil is 0.6:1.
4. adopt Rice pollard oil to prepare the method for biofuel according to claim 1, it is characterized in that, in described step (3), the weight part ratio of methyl alcohol and Rice pollard oil is 6:1.
5. adopt Rice pollard oil to prepare the method for biofuel according to claim 4, it is characterized in that, in described step (4), the weight part ratio of methyl alcohol and Rice pollard oil is 1.8:1.
6. adopt Rice pollard oil to prepare the method for biofuel according to claim 1, it is characterized in that, in described step (3), the weight part ratio of methyl alcohol and Rice pollard oil is 6.5:1.
7. adopt Rice pollard oil to prepare the method for biofuel according to claim 6, it is characterized in that, in described step (4), the weight part ratio of methyl alcohol and Rice pollard oil is 1.95:1.
8. adopt Rice pollard oil to prepare the method for biofuel according to claim 1, it is characterized in that, in described step (3), the massfraction of catalyzer potassium hydroxide is 0.75%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510162540.4A CN104745312A (en) | 2015-04-08 | 2015-04-08 | Method for preparing biodiesel from rice bran oil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510162540.4A CN104745312A (en) | 2015-04-08 | 2015-04-08 | Method for preparing biodiesel from rice bran oil |
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| CN104745312A true CN104745312A (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510162540.4A Pending CN104745312A (en) | 2015-04-08 | 2015-04-08 | Method for preparing biodiesel from rice bran oil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106010678A (en) * | 2016-06-05 | 2016-10-12 | 上海应用技术学院 | Method for improving low-temperature fluidity of biodiesel with diesel from direct coal liquefaction as cosolvent |
-
2015
- 2015-04-08 CN CN201510162540.4A patent/CN104745312A/en active Pending
Non-Patent Citations (4)
| Title |
|---|
| 孟佳: "米糠油制备生物柴油的研究", 《中国油脂》 * |
| 李旭东: "连续酸催化法用于高酸值米糠油制备生物柴油的研究", 《油脂加工》 * |
| 王利卿: "米糠油酯交换反应制备生物柴油的研究", 《精细石油化工进展》 * |
| 高经梁等: "米糠油的加工技术及应用研究进展", 《粮食科技与经济》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106010678A (en) * | 2016-06-05 | 2016-10-12 | 上海应用技术学院 | Method for improving low-temperature fluidity of biodiesel with diesel from direct coal liquefaction as cosolvent |
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Address after: 256209 private science and Technology Park, Han Zhen Town, Binzhou, Zouping, Shandong Applicant after: Shandong Jian Yuan oil technology company limited Address before: 256209 private science and Technology Park, Han Zhen Town, Binzhou, Zouping, Shandong Applicant before: ZOUPING JIANYUAN GREASE CO., LTD. |
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Application publication date: 20150701 |