CN103215140A - Method for continuously producing biodiesel without catalysts - Google Patents
Method for continuously producing biodiesel without catalysts Download PDFInfo
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- CN103215140A CN103215140A CN2013101715187A CN201310171518A CN103215140A CN 103215140 A CN103215140 A CN 103215140A CN 2013101715187 A CN2013101715187 A CN 2013101715187A CN 201310171518 A CN201310171518 A CN 201310171518A CN 103215140 A CN103215140 A CN 103215140A
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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
- 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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- Liquid Carbonaceous Fuels (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a method for continuously producing biodiesel without catalysts. The method comprises the following steps of: heating and pressurizing waste animal and plant grease, microbial grease and the like; performing lipid hydrolysis with methanol, fatty acid esterification and ester exchange reaction with glyceride in a biodiesel reaction tower; and pumping the reaction products to a glycerol distillation tower, a methyl ester deodorization tower and a methyl distillation tower continuously to obtain the biodiesel. The method is continuous, quick in reaction speed, low in production cost, simple to operate, free from process wastewater, stable and reliable in quality and suitable for large-scale production.
Description
Technical field
The present invention relates to the production of biodiesel technical field, specifically is a kind of method of catalyst-free continuously producing biodiesel.
Background technology
Biofuel also claims fatty acid methyl ester, it be waste animal and vegetable oil, microbial oil etc. as raw material, obtain through esterification, transesterification reaction with methyl alcohol low-carbon alcohol such as (or ethanol).Biofuel becomes a kind of fine petroleum diesel substitute with its unique recyclability and green environmental protection, is considered to solve global energy crisis, one of the environmental stress of releiving, control topsoil optimal approach.
At present, the processing method of China's suitability for industrialized production biofuel mainly contains two kinds, (1) chemical method: adopt this method production biofuel comparatively ripe, because of using acid, alkali as catalyzer, be easy to generate a large amount of waste water.(2) biological enzyme: adopting this comparatively environmental protection of method production biofuel, is not shortcoming such as very stable but exist long, technology of production cost height, reaction times.
Summary of the invention
The invention provides a kind of method of catalyst-free continuously producing biodiesel, solve existing production method and easily produce a large amount of waste water, production cost height and technology problem of unstable.
The method of this catalyst-free continuously producing biodiesel of the present invention is as follows:
A, stock oil (waste animal and vegetable oil, microbial oil etc.) are through removal of impurities, vacuum flashing dehydration, and moisture content requires in 0.1%;
B, removal of impurities, dehydrated raw material oil pumped up to 1.3MPa～4.0MPa carry, be heated to 180 ℃～220 ℃, enter from biofuel reaction tower top continuously through preheater;
C, the auxiliary material methyl alcohol of purity＞98% pumped up to 1.3MPa～4.0MPa carry, be heated to 180 ℃～220 ℃, enter from biofuel reaction tower bottom continuously through preheater;
D, stock oil is from top to bottom in the biofuel reaction tower, methanol gas is driven in the wrong direction from bottom to top and is contacted, and fat hydrolysis, fatty acid esterification and glyceride transesterification reaction take place, and generates fatty acid methyl ester and glycerine, be reflected at 1.3MPa～4.0MPa, carry out under 180 ℃～220 ℃ conditions;
E, excessive methanol gas entrainment the water of reaction generation and are discharged from biofuel reaction cat head, reclaim methyl alcohol continuously through methanol distillation column, the methyl alcohol of purity＞98% can recycle for the biofuel reaction tower, and separates the water of discharging the esterification generation from the Methanol Recovery tower bottom;
F, emit reaction product from biofuel reaction tower bottom: the mixture of thick methyl esters and raw glycerine;
G, the mixture of thick methyl esters of reaction product and raw glycerine is squeezed in the glycerol distillation tower continuously, temperature is controlled at 160 ℃～185 ℃, pressure-controlling-0.08MPa～-0.1MPa, remove raw glycerine and other light constituent materials continuously;
H, the thick methyl esters that will remove behind the raw glycerine are squeezed in methyl esters deodorization tower and the methyl ester distilled tower continuously, temperature is controlled at 175 ℃～200 ℃, pressure-controlling-0.08MPa～-0.1MPa, light constituent in the thick methyl esters (stink thing) is all removed away, enter methyl ester distilled tower then continuously, under same pressure, the recovered temperature scope obtains smart methyl esters (being biofuel) at 180 ℃～240 ℃ overhead product, and the steaming excess is plant asphalt (a black pin).
Described biofuel reaction tower is three tower cascade connected, stock oil all the time from top to bottom, methanol gas is all the time from bottom to top.
Described biofuel reaction tower, methanol distillation column, glycerol distillation tower, methyl esters deodorization tower, methyl ester distilled tower all are the serialization operation.
Described biofuel reaction tower also can replace with tubular reactor.
The method of this catalyst-free continuously producing biodiesel provided by the invention can realize that serialization, speed of response are fast, low production cost, simple to operate and do not have processing wastewater, steady quality and reliably be fit to scale operation.
Embodiment
Stock oil (waste animal and vegetable oil, microbial oil etc.) is through removal of impurities, vacuum flashing dehydration, and moisture content requires in 0.1%; Removal of impurities, dehydrated raw material oil are pumped up to 1.3MPa～4.0MPa conveying, be heated to 180 ℃～220 ℃, enter from biofuel reaction tower top continuously through preheater; The auxiliary material methyl alcohol of purity＞98% is pumped up to 1.3MPa～4.0MPa conveying, be heated to 180 ℃～220 ℃, enter from biofuel reaction tower bottom continuously through preheater; Stock oil from top to bottom in the biofuel reaction tower, methanol gas is driven in the wrong direction from bottom to top and is contacted, and fat hydrolysis, fatty acid esterification and glyceride transesterification reaction take place, and generates fatty acid methyl ester and glycerine, be reflected at 1.3MPa～4.0MPa, carry out under 180 ℃～220 ℃ conditions; The excessive methanol gas entrainment the water of reaction generation and is discharged from biofuel reaction cat head, reclaim methyl alcohol continuously through methanol distillation column, the methyl alcohol of purity＞98% can recycle for the biofuel reaction tower, and separates the water of discharging the esterification generation from the Methanol Recovery tower bottom; Emit reaction product from biofuel reaction tower bottom: the mixture of thick methyl esters and raw glycerine; The mixture of thick methyl esters of reaction product and raw glycerine is squeezed in the glycerol distillation tower continuously, and temperature is controlled at 160 ℃～185 ℃, pressure-controlling-0.08MPa～-0.1MPa, remove raw glycerine and other light constituent materials continuously; The thick methyl esters that removes behind the raw glycerine is squeezed in methyl esters deodorization tower and the methyl ester distilled tower continuously, temperature is controlled at 175 ℃～200 ℃, pressure-controlling-0.08MPa～-0.1MPa, light constituent in the thick methyl esters (stink thing) is all removed away, enter methyl ester distilled tower then continuously, under same pressure, the recovered temperature scope obtains smart methyl esters (biofuel) at 180 ℃～240 ℃ overhead product, and the steaming excess is plant asphalt (a black pin).
Claims (4)
1. the method for a catalyst-free continuously producing biodiesel is characterized in that as follows:
A, stock oil are through removal of impurities, vacuum flashing dehydration, and moisture content requires in 0.1%;
B, removal of impurities, dehydrated raw material oil pumped up to 1.3MPa～4.0MPa carry, be heated to 180 ℃～220 ℃, enter from biofuel reaction tower top continuously through preheater;
C, the auxiliary material methyl alcohol of purity＞98% pumped up to 1.3MPa～4.0MPa carry, be heated to 180 ℃～220 ℃, enter from biofuel reaction tower bottom continuously through preheater;
D, stock oil is from top to bottom in the biofuel reaction tower, methanol gas is driven in the wrong direction from bottom to top and is contacted, and fat hydrolysis, fatty acid esterification and glyceride transesterification reaction take place, and generates fatty acid methyl ester and glycerine, be reflected at 1.3MPa～4.0MPa, carry out under 180 ℃～220 ℃ conditions;
E, excessive methanol gas entrainment the water of reaction generation and are discharged from biofuel reaction cat head, reclaim methyl alcohol continuously through methanol distillation column, the methyl alcohol of purity＞98% can recycle for the biofuel reaction tower, and separates the water of discharging the esterification generation from the Methanol Recovery tower bottom;
F, emit reaction product from biofuel reaction tower bottom: the mixture of thick methyl esters and raw glycerine;
G, the mixture of thick methyl esters of reaction product and raw glycerine is squeezed in the glycerol distillation tower continuously, temperature is controlled at 160 ℃～185 ℃, pressure-controlling-0.08MPa～-0.1MPa, remove raw glycerine and other light constituent materials continuously;
H, the thick methyl esters that will remove behind the raw glycerine are squeezed in methyl esters deodorization tower and the methyl ester distilled tower continuously, temperature is controlled at 175 ℃～200 ℃, pressure-controlling-0.08MPa～-0.1MPa, light constituent in the thick methyl esters is all removed away, enter methyl ester distilled tower then continuously, under same pressure, the recovered temperature scope obtains smart methyl esters at 180 ℃～240 ℃ overhead product.
2. the method for a kind of catalyst-free continuously producing biodiesel according to claim 1 is characterized in that: described biofuel reaction tower is three tower cascade connected, stock oil all the time from top to bottom, methanol gas is all the time from bottom to top.
3. the method for a kind of catalyst-free continuously producing biodiesel according to claim 1 is characterized in that: described biofuel reaction tower, methanol distillation column, glycerol distillation tower, methyl esters deodorization tower, methyl ester distilled tower all are the serialization operation.
4. the method for a kind of catalyst-free continuously producing biodiesel according to claim 1 is characterized in that: described biofuel reaction tower can replace with tubular reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101715187A CN103215140A (en) | 2013-03-19 | 2013-03-19 | Method for continuously producing biodiesel without catalysts |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101715187A CN103215140A (en) | 2013-03-19 | 2013-03-19 | Method for continuously producing biodiesel without catalysts |
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| CN103215140A true CN103215140A (en) | 2013-07-24 |
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| CN2013101715187A Pending CN103215140A (en) | 2013-03-19 | 2013-03-19 | Method for continuously producing biodiesel without catalysts |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361185A (en) * | 2013-08-09 | 2013-10-23 | 陈春林 | Non-catalytic production method of biodiesel |
| CN103756790A (en) * | 2014-01-23 | 2014-04-30 | 湖南未名创林生物能源有限公司 | Production method of biodiesel |
| CN105861164A (en) * | 2016-05-03 | 2016-08-17 | 陕西德融新能源股份有限公司 | Technology for producing biodiesel from non-refined fat with no catalyst |
| CN110172377A (en) * | 2019-06-20 | 2019-08-27 | 成都恒润高新科技股份有限公司 | A method of biodiesel is continuously prepared using waste animal and vegetable oil |
| CN111088115A (en) * | 2019-10-25 | 2020-05-01 | 赵汇川 | Method for synthesizing biodiesel by continuous medium-pressure esterification |
-
2013
- 2013-03-19 CN CN2013101715187A patent/CN103215140A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361185A (en) * | 2013-08-09 | 2013-10-23 | 陈春林 | Non-catalytic production method of biodiesel |
| CN103756790A (en) * | 2014-01-23 | 2014-04-30 | 湖南未名创林生物能源有限公司 | Production method of biodiesel |
| CN105861164A (en) * | 2016-05-03 | 2016-08-17 | 陕西德融新能源股份有限公司 | Technology for producing biodiesel from non-refined fat with no catalyst |
| CN110172377A (en) * | 2019-06-20 | 2019-08-27 | 成都恒润高新科技股份有限公司 | A method of biodiesel is continuously prepared using waste animal and vegetable oil |
| CN111088115A (en) * | 2019-10-25 | 2020-05-01 | 赵汇川 | Method for synthesizing biodiesel by continuous medium-pressure esterification |
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Application publication date: 20130724 |