CN104862084A - Process for preparing biodiesel - Google Patents
Process for preparing biodiesel Download PDFInfo
- Publication number
- CN104862084A CN104862084A CN201510186935.8A CN201510186935A CN104862084A CN 104862084 A CN104862084 A CN 104862084A CN 201510186935 A CN201510186935 A CN 201510186935A CN 104862084 A CN104862084 A CN 104862084A
- Authority
- CN
- China
- Prior art keywords
- fatty acid
- methyl ester
- acid methyl
- biofuel
- esterification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- C11C3/14—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom by isomerisation
-
- 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
- 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
-
- 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
Abstract
The invention relates to a process for preparing biodiesel. According to the invention, fatty acid methyl ester biodiesel is adopted as a raw material, and is processed through an alkylation process with gas alkane on an acid-loading catalyst, such that isomeric fatty acid methyl ester biodiesel is obtained. The product provided by the invention has low solidifying point, excellent oxidation stability and excellent hydrolysis stability. The solidifying point is reduced by 10-30 DEG C than that before the reaction. The oxidation stability is improved by more than 1 time. With the product provided by the invention, defects of existing biodiesel are made up. The performance of the product exceeds those of commercial products and other alternative energy sources provided by current researches. The product can become a safe and renewable high-end synthetic diesel product.
Description
Technical field
The present invention relates to field of biodiesel oil, particularly a kind of technique preparing biofuel.
Background technology
Along with problems such as day by day serious global energy shortage and environmental degradations, control motor vehicle exhaust, the physical environment that the protection mankind depend on for existence becomes current mankind's urgent problem.From the angle of environment protection and Resources Strategy; the energy research personnel of countries in the world are trying to explore development alternative fuel and renewable energy source; biofuel is exactly one of them; it is made for stock oil with the waterplant greases such as oil crops, Wild oil plant and engineering microalgae and animal grease, food garbage wet goods; it is a kind of renewable energy source; oilness, security, to have good burning performance; biodegradable; use postcure thing quantity discharged to greatly reduce, there is good security and economic worth.
The preparation method of biofuel mainly contains ester-interchange method, direct mixing method, mini-emulsion process, high temperature pyrolytic cracking etc., and industrial production, based on ester-interchange method, comprises acid catalysis, base catalysis, enzyme catalysis etc.At present, technological development direction is mainly selected efficiently, environment-friendly type catalytic material etc., and the utilization of overcritical production technique based on catalyst-free, product technology more trends towards the high-performance biofuel exploitation possessing high hexadecane value, low sulfur content, low cold filter clogging temperature.
At present, utilize grease production fatty acid methyl ester technology relative maturity, biodiesel oil product is also in certain application that the field such as automobile-used, mechanical obtains.In general, biofuel is the fatty acid methyl ester of C15-C19, pure biofuel (B100) is petrifaction diesel relatively, kinematic viscosity calorific value that is large, that produce is little, condensation point is high (generally at 0 DEG C or higher), so using with a certain proportion of petrifaction diesel blending as general selection in the use of fuel.Also certain impact is there is in different raw materials on the performance of biofuel the finished product, if the raw material saturated fatty acid content selected high (as the animal grease such as ox, sheep), its condensation point of the biofuel so produced is inevitable high, cause low temperature crystallization and gelation, such biofuel can not be used in northern cold area and severe cold district.If the raw material unsaturated fatty acid content selected high (as soybean oil, sunflower wet goods Vegetable oil lipoprotein), though the biofuel produced reduces condensation point, minimumly reach-10 DEG C, but because it contains a large amount of unsaturated link(age)s, make such biofuel be hydrolyzed and oxidation stability poor, there is the problem to equipment corrosion.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of technique preparing biofuel, to solve the above-mentioned multinomial defect caused in prior art.
For achieving the above object, the invention provides following technical scheme: a kind of technique preparing biofuel, with fatty acid methyl ester biofuel for raw material and methane are on sour supported catalyst, obtain iso-fatty acid methyl ester biodiesel through alkylation process, it is characterized in that, comprise the following steps:
(1) fatty acid methyl ester, methane and sour supported catalyst are passed into reactor, the mass ratio of fatty acid methyl ester and methane is 1:4, and sour supported catalyst consumption is the 2-5wt% of fatty acid methyl ester, and pressure control range is 6-8MPa, temperature is 90-120 DEG C, reaction times 2-3h;
(2) at temperature 90-110 DEG C, in reactor, constantly pass into methanol liquid, methanol flow rate is 0.8-1.2mL/min, and condensing works reclaims the moisture of esterification generation and unnecessary methyl alcohol, measures acid number, when acid number is lower than stopped reaction during 1.0mgKOH/g.
Preferably, the methanol liquid in step (2) continuously towards carrying out esterification bottom oil reservoir, and reaction time of esterification is 80-110 minute.
Preferably, in step (2), the water of esterification generation and unnecessary methyl alcohol are reclaimed in condensation, and obtain dilute methanol liquid, rectifying Posterior circle uses.
The beneficial effect of above technical scheme is adopted to be: the present invention's whole reaction process flow process is simple, the time is short, deacidification speed is fast, energy consumption is low, and resultant of reaction only has fatty acid methyl ester and water, without other by product, is beneficial to the purification of later stage biofuel.
The present invention, in conjunction with the factor such as atom economy, performance boost, develops with fatty acid methyl ester and methane production iso-fatty acid methyl ester, and except nucleidic mass improves, product also has low solidifying, excellent oxidation and hydrolysis stability.In addition, along with the continuous exhaustion of fossil resource in recent years, people to the exploration of new forms of energy and novel material also more actively and deeply.Product prepared by the present invention compensate for the defect of existing biofuel, and product performance exceed other substitute energy of commercially produced product and research at present, can become a kind of safety and reproducible high-end combined diesel oil product
The present invention, to highly purified lipid acid and the more complicated mixed fatty acid of composition, can reach good deacidification effect.
The present invention has actual directive significance and Development volue for fatty acid esterification legal system for the research of biofuel and the determination of parameter.
Embodiment
The following detailed description of the preferred embodiment of the present invention.
embodiment 1
Prepare a technique for biofuel, with fatty acid methyl ester biofuel for raw material and methane are on sour supported catalyst, obtain iso-fatty acid methyl ester biodiesel through alkylation process, it is characterized in that, comprise the following steps:
(1) fatty acid methyl ester, methane and sour supported catalyst are passed into reactor, the mass ratio of fatty acid methyl ester and methane is 1:4, and sour supported catalyst consumption is the 2wt% of fatty acid methyl ester, and pressure control range is 6MPa, and temperature is 90 DEG C, reaction times 2h;
(2) at temperature 90 DEG C, in reactor, constantly pass into methanol liquid, methanol flow rate is 0.8mL/min, and condensing works reclaims the moisture of esterification generation and unnecessary methyl alcohol, measures acid number, when acid number is lower than stopped reaction during 1.0mgKOH/g.
Methanol liquid in step (2) continuously towards carrying out esterification bottom oil reservoir, and reaction time of esterification is 80 minutes.
In step (2), the water of esterification generation and unnecessary methyl alcohol are reclaimed in condensation, and obtain dilute methanol liquid, rectifying Posterior circle uses.
embodiment 2
Prepare a technique for biofuel, with fatty acid methyl ester biofuel for raw material and methane are on sour supported catalyst, obtain iso-fatty acid methyl ester biodiesel through alkylation process, it is characterized in that, comprise the following steps:
(1) fatty acid methyl ester, methane and sour supported catalyst are passed into reactor, the mass ratio of fatty acid methyl ester and methane is 1:4, and sour supported catalyst consumption is the 5wt% of fatty acid methyl ester, and pressure control range is 8MPa, and temperature is 120 DEG C, reaction times 3h;
(2) at temperature 110 DEG C, in reactor, constantly pass into methanol liquid, methanol flow rate is 1.2mL/min, and condensing works reclaims the moisture of esterification generation and unnecessary methyl alcohol, measures acid number, when acid number is lower than stopped reaction during 1.0mgKOH/g.
Methanol liquid in step (2) continuously towards carrying out esterification bottom oil reservoir, and reaction time of esterification is 110 minutes.
In step (2), the water of esterification generation and unnecessary methyl alcohol are reclaimed in condensation, and obtain dilute methanol liquid, rectifying Posterior circle uses.
embodiment 3
Prepare a technique for biofuel, with fatty acid methyl ester biofuel for raw material and methane are on sour supported catalyst, obtain iso-fatty acid methyl ester biodiesel through alkylation process, it is characterized in that, comprise the following steps:
(1) fatty acid methyl ester, methane and sour supported catalyst are passed into reactor, the mass ratio of fatty acid methyl ester and methane is 1:4, and sour supported catalyst consumption is the 4wt% of fatty acid methyl ester, and pressure control range is 7MPa, and temperature is 105 DEG C, reaction times 2.5h;
(2) at temperature 100 DEG C, in reactor, constantly pass into methanol liquid, methanol flow rate is 1mL/min, and condensing works reclaims the moisture of esterification generation and unnecessary methyl alcohol, measures acid number, when acid number is lower than stopped reaction during 1.0mgKOH/g.
Methanol liquid in step (2) continuously towards carrying out esterification bottom oil reservoir, and reaction time of esterification is 95 minutes.
In step (2), the water of esterification generation and unnecessary methyl alcohol are reclaimed in condensation, and obtain dilute methanol liquid, rectifying Posterior circle uses.
Table 1 gained biofuel of the present invention measured data and GB index contrast
It is as shown in the table, and each index of biofuel of the present invention all improves a lot relative to prior art.
Above-described is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, and without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (3)
1. prepare a technique for biofuel, with fatty acid methyl ester biofuel for raw material and methane are on sour supported catalyst, obtain iso-fatty acid methyl ester biodiesel through alkylation process, it is characterized in that, comprise the following steps:
(1) fatty acid methyl ester, methane and sour supported catalyst are passed into reactor, the mass ratio of fatty acid methyl ester and methane is 1:4, and sour supported catalyst consumption is the 2-5wt% of fatty acid methyl ester, and pressure control range is 6-8MPa, temperature is 90-120 DEG C, reaction times 2-3h;
(2) at temperature 90-110 DEG C, in reactor, constantly pass into methanol liquid, methanol flow rate is 0.8-1.2mL/min, and condensing works reclaims the moisture of esterification generation and unnecessary methyl alcohol, measures acid number, when acid number is lower than stopped reaction during 1.0mgKOH/g.
2. the technique of preparation biofuel according to claim 1, is characterized in that, the methanol liquid in step (2) continuously towards carrying out esterification bottom oil reservoir, and reaction time of esterification is 80-110 minute.
3. the technique of preparation biofuel according to claim 1 and 2, is characterized in that, in step (2), the water of esterification generation and unnecessary methyl alcohol are reclaimed in condensation, and obtain dilute methanol liquid, rectifying Posterior circle uses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510186935.8A CN104862084A (en) | 2015-04-20 | 2015-04-20 | Process for preparing biodiesel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510186935.8A CN104862084A (en) | 2015-04-20 | 2015-04-20 | Process for preparing biodiesel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104862084A true CN104862084A (en) | 2015-08-26 |
Family
ID=53908270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510186935.8A Pending CN104862084A (en) | 2015-04-20 | 2015-04-20 | Process for preparing biodiesel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104862084A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740414A (en) * | 2013-12-26 | 2014-04-23 | 内蒙古金地生物质有限公司 | Preparation method of iso-fatty acid methyl ester biodiesel |
-
2015
- 2015-04-20 CN CN201510186935.8A patent/CN104862084A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740414A (en) * | 2013-12-26 | 2014-04-23 | 内蒙古金地生物质有限公司 | Preparation method of iso-fatty acid methyl ester biodiesel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102703223B (en) | Process for preparing biodiesel by catalytic esterification and alcoholysis of gas-phase methanol | |
| CN102382716A (en) | Method and equipment for preparing biodiesel with high-acid-value waste oil | |
| CN101082003A (en) | Environmental protection biological diesel and preparation method thereof | |
| CN103666519B (en) | Non-edible animals and plants oil hydrogenation deoxidation prepares the method for alkane | |
| CN101307243A (en) | Process for producing biodiesel form seed of soapberry plant | |
| CN100523131C (en) | Esterification reaction technique of preparing biodiesel by waste oil | |
| KR20170043906A (en) | Method for Conversing from High Acid Value Fatty Acid to Bio Fuel Oil or Biodiesel | |
| CN103421550B (en) | A kind of environment protection type biological liquid fuel and preparation method thereof | |
| KR20150005123A (en) | Heavy oil preparation method using botanic oil containing lots of free fatty acid | |
| CN103320234B (en) | High heating value biodiesel and preparation method thereof | |
| CN103721702B (en) | Preparation method of catalyst for biodiesel production | |
| Babu et al. | Significance of biodiesel use as IC engine fuels | |
| CN103045311B (en) | Micro-emulsified diesel oil and preparation method thereof | |
| CN104862084A (en) | Process for preparing biodiesel | |
| CN101307262B (en) | Biology liquid fuel of high heat value and method for preparing same | |
| CN103194255B (en) | Catalytic cracking animal-plant oil produces the method for clean fuel | |
| CN103740414A (en) | Preparation method of iso-fatty acid methyl ester biodiesel | |
| CN104120039A (en) | Method for preparing fatty acid methyl ester through multi-stage ester exchange | |
| CN108300572A (en) | The method that environmentally friendly bunker fuel oil blending component is produced using no catalyst glycerine esterification gutter oil | |
| CN109762528B (en) | Phase-change energy storage material and preparation method thereof | |
| CN104804878A (en) | Novel fatty acid methyl ester biodiesel production technology | |
| CN104745312A (en) | Method for preparing biodiesel from rice bran oil | |
| CN101684423A (en) | Control method for reducing ash content in gasified briquette | |
| CN202829885U (en) | Device for producing dimethyl ether by using coarse carbinol | |
| CN104593159A (en) | Method for producing biodiesel by use of composite solid catalyst |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150826 |